| Entries |
| Document | Title | Date |
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| 20080216491 | PRESSURE GAUGES AND METHODS OF USE - A pressure gauge apparatus for determining refrigerant pressures in a refrigeration system and methods of use are described herein. The pressure gauge apparatus may include a pressure gauge and a faceplate. The faceplate may be rotated such that ambient temperature and a pressure range are visually indicated on the pressure gauge. The pressure range may correlate to an adequate amount of refrigerant in the refrigeration system at ambient temperature. | 09-11-2008 |
| 20080216492 | Method and a System for Filling a Refrigeration System with Refrigerant - When according to the invention, using a method and a system comprising a compressor ( | 09-11-2008 |
| 20080289343 | Universal coupling device - A coupling in accordance with the present invention may be used to join devices together without the need for conduits or other intermediaries. A nut may be used to couple the coupling to a first device via a first thread portion and to a second device via a second thread portion. In some embodiments, the coupling may be affixed to one of the first or second devices. | 11-27-2008 |
| 20090000316 | Modular Refrigeration Unit and Process for Assembling a Modular Refrigeration Unit to a Cabinet of a Refrigeration Appliance - The present invention relates to a modular refrigeration unit for a refrigeration appliance, and to a process for assembling the modular refrigeration unit to a cabinet of a refrigeration appliance. A modular refrigeration unit ( | 01-01-2009 |
| 20090013700 | Refrigerating air conditioning system, method of controlling operation of refrigerating air conditioning system, and method of controlling amount of refrigerant in refrigerating air conditioning system - In a refrigerating air conditioning system using refrigerant such as CO | 01-15-2009 |
| 20090013701 | REFRIGERANT SYSTEM WITH CONTROL TO ADDRESS FLOODED COMPRESSOR OPERATION - A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-up, among other conditions. Throttling the suction modulation valve reduces the amount of refrigerant reaching the compressor and thus ensures that any liquid refrigerant would be likely “boiled off” before raising any problems in the compressor. Other control steps can also be performed to alleviate flooded compressor operation with liquid refrigerant. Such steps, for example, can consist of: actuating heaters, discharge valve throttling, by-passing refrigerant from intermediate compression point back to suction, controlling the speed of the condenser fan can be performed independently or in combination including the suction modulation valve throttling. | 01-15-2009 |
| 20090113900 | METHODS AND APPARATUS FOR OPERATING AIR CONDITIONING SYSTEMS WITH AN ECONOMIZER CYCLE - Methods and apparatus are provided for enhancing the performance of rooftop air conditioning systems by operating such systems with an economizer cycle and utilizing a blend incorporating R32 and R125 refrigerants as a working medium, wherein such benefits are related to at least the performance (e.g. capacity and/or the energy efficiency ratio) of the rooftop air conditioning system operating at various environments (e.g. temperatures at and above 95° F.). | 05-07-2009 |
| 20090113901 | Method and Apparatus for Servicing a Coolant System - A method and an apparatus for servicing a coolant system is disclosed. Using the apparatus, a user may fill the coolant system with coolant. The user may also measure a current pressure of the coolant system. The apparatus then compares the current pressure with a predetermined pressure associated with an ambient temperature to determine a coolant charge status. The apparatus alerts a user to the coolant charge status of the coolant system using an indicating device. | 05-07-2009 |
| 20090126375 | Air conditioner, refrigerant filling method of air conditioner, method for judging refrigerant filling state of air conditioner as well as refrigerant filling and pipe cleaning method of air conditioner - An air conditioner is arranged so as to be able to accurately judge a refrigerant filling state within the air conditioner regardless of environmental and installation conditions. The air conditioner has a computing section | 05-21-2009 |
| 20090133413 | REFRIGERANT CHARGING METHOD IN REFRIGERATION SYSTEM USING CARBON DIOXIDE AS REFRIGERANT - A refrigerant charging method in an air conditioner using carbon dioxide as a refrigerant includes a first refrigerant charging step and a second refrigerant charging step. The first refrigerant charging step is a step of charging a refrigerant charging target portion including refrigerant communication pipes with refrigerant in a gas state until the pressure of the refrigerant charging target portion rises to a predetermined pressure after the start of charging. The second refrigerant charging step is a step of charging the refrigerant charging target portion with refrigerant in a liquid state until the amount of refrigerant charging the refrigerant charging target portion becomes a predetermined amount. The second refrigerant charging ster occuring after the first refrigerant charging step. | 05-28-2009 |
| 20090158756 | METHOD FOR ACCURATELY RECHARGING A/C SYSTEMS - A refrigerant recovery unit for accurately filling a refrigerant system with a refrigerant is provided which includes a storage vessel for holding refrigerant, sensors to assist in determining the pressure of the refrigerant in the storage vessel, a controller to control the flow of refrigerant from the storage vessel to the refrigerant system to be serviced, and a heating device to heat the refrigerant, which is activated only if heating is required, as determined by data received by the controller. | 06-25-2009 |
| 20090165472 | SYSTEM PERFORMANCE CORRECTION BY MODIFYING REFRIGERANT COMPOSITION IN A REFRIGERANT SYSTEM - An adequate operation and performance of a refrigerant system includes the steps of adding a refrigerant that is different from the original refrigerant, into the refrigerant system should any operational problems be observed during operation of the refrigerant system. As an example, should the refrigerant system be cycling frequently, a lower pressure refrigerant may be added or replace, partially or fully, the refrigerant the system being initially charged with. By making this change, the present invention can, for example, lower the provided system capacity, and hence reduce the amount of cycling. Additionally, conditioned space comfort and system reliability would be improved. Further, changes over time, such as the degradation of the heat exchanger performance, and their negative effect on system operation can be alleviated by such a refrigerant substitution. | 07-02-2009 |
| 20090183516 | INSPECTION PORT - A manifold gauge set has at least one sight glass window for viewing contents of a refrigeration system or an air conditioning system being serviced. The window may be non-planar to achieve an appearance that varies with the presence or absence of liquid. Such a non-planar window may be in the form of a dome, prism or a fresnel lens. The gauge set may have a second light transmissive window to allow light to illuminate system contents being viewed. A light source may be provided to illuminate system contents being viewed. The light source may provide light through the same window that is used for viewing contents. A diffuser may be provided with a second window to achieve an illuminated background for viewing system contents. Similar configurations may be used in standalone sight glasses, vacuum pumps, and recovery machines. | 07-23-2009 |
| 20090188263 | Apparatus to Clear Oil from the Hoses and Front End of a Recovery Recharge Machine - A refrigerant recovery unit is provided that can recover and recharge refrigerant. The unit is further configured with a pair of service hoses and a refrigerant control circuit operable to receive and transport the refrigerant between the hoses and the storage vessel and to process the refrigerant to substantially remove contaminants from the refrigerant. A fluid connector is provided in fluid communication with the hoses to enable the refrigerant to flow between the hoses and to establish a closed loop through the refrigerant control circuit, and a controller is operatively connected to the refrigerant control circuit and configured to control a flow of the refrigerant through the refrigerant control circuit and through the fluid connector. | 07-30-2009 |
| 20090217679 | REFRIGERATION COOLING SYSTEM CONTROL - A controller is configured to perform at least one of loading and unloading at least one of a plurality of refrigerant compressors to a refrigeration cooling system based at least upon an enthalpy of circulating refrigerant liquid of the refrigeration cooling system and a rate of change of enthalpy of evaporated refrigerant gas in the refrigeration cooling system. | 09-03-2009 |
| 20090235675 | Air conditioner and method for changing refrigerant of air-conditioner - A air-conditioner and the refrigerant charging method of the air-conditioner are disclosed. When a refrigerant amount determining mode is requested to be performed, whether or not the refrigerant amount in the air-conditioner is proper is automatically determined and a shortage amount of refrigerant can be charged. Thus, a user can easily check whether or not the refrigerant charged in the air-conditioner is sufficient or insufficient, and if the refrigerant is not sufficient, the user can automatically charge the refrigerant without having to entirely remove the refrigerant from the air-conditioner, thus increasing the user convenience and reducing time and costs. | 09-24-2009 |
| 20090241560 | METHOD FOR RECOVERY AND RECHARGE OF BLEND REFRIGERANTS WITH BLEND SENT FOR RECLAMATION - A refrigerant recovery unit that diverts blended refrigerant withdrawn out of a refrigerant system to an external tank outside the refrigerant recovery unit for reclamation includes a recovery circuit coupled on one end to the refrigerant system and coupled on another end to the external tank, a controller in communication with the recovery circuit for controlling a transfer of the refrigerant withdrawn from the refrigerant system to the external tank, and a valve operatively engaged with the controller and the recovery circuit and operable to transfer the refrigerant withdrawn from the refrigerant system to the external tank for recycling or reclamation. | 10-01-2009 |
| 20090272131 | METHOD FOR USING HIGH PRESSURE REFRIGERANT FOR LEAK CHECKING A SYSTEM - A method for using refrigerant to check for a leak in a refrigerant system is provided that establishing fluid communication between a refrigerant recovery unit and a refrigerant system. The refrigerant recovery unit passes a refrigerant through the refrigerant recovery unit, compresses the refrigerant utilizing the refrigerant recovery unit, and transfers the compressed refrigerant from the refrigerant recovery unit directly into the refrigerant system. Additional refrigerant is added into the refrigerant system until a desired system pressure is reached, and then the refrigerant system is checked for leaks. | 11-05-2009 |
| 20090272132 | METHOD AND SYSTEM FOR REMOTE ACQUISITION OF REFRIGERATED VEHICLE DATA VIA TELEMATICS - A method or apparatus of accessing data includes detecting at least one parameter of a component of a refrigerated container and providing data relating to the at least one parameter to a transmitting computer located on the refrigerated container. The method or apparatus can further include transferring the data from the transmitting computer to a first remote computer located at an off-site location and transferring the data from the first remote computer to a second remote computer located at another off-site location. | 11-05-2009 |
| 20090293511 | APPLIANCE FEATURE MODULE ENABLED BY ENERGY OR MATERIALS SOURCED FROM THE HOST APPLIANCE - A modular utility supply unit that includes a utility supply module housing having removable engageability to a surface of an appliance. Also included is at least one refillable reservoir capable of storing a plurality of utilities and receiving at least one utility from the appliance when the utility supply unit is operably engaged to the appliance. Further included is an interface capable of engaging a plurality of feature modules, where the interface includes a recognition device that prompts the utility supply unit to provide the engaged feature module with at least one of the storage utilities within the utility supply from at least one of the refillable reservoirs. | 12-03-2009 |
| 20090301108 | MULTI-REFRIGERANT COOLING SYSTEM WITH PROVISIONS FOR ADJUSTMENT OF REFRIGERANT COMPOSITION - A multi-refrigerant cooling system comprising a cooling circuit ( | 12-10-2009 |
| 20090314013 | METHOD FOR SERVICING AIR-CONDITIONING SYSTEMS, AND CONTAINER FOR CARRYING IT OUT - The present invention relates to a method for filling a fluid ( | 12-24-2009 |
| 20100000237 | REFRIGERANT CHARGING METHOD FOR REFRIGERATION DEVICE HAVING CARBON DIOXIDE AS REFRIGERANT - When a refrigeration device in which CO | 01-07-2010 |
| 20100005815 | Liquid discharge method and liquid discharger in temperature controlller - There is disclosed a liquid discharge method in a temperature controller having a refrigerant circulation line circulating a refrigerant to a target of temperature control and a heater heating the target, wherein the refrigerant is circulated so as to control the temperature of the target with the refrigerant and the heater in the case where the temperature of the target is controlled to be a first temperature lower than or equal to a room temperature, wherein the circulation of the refrigerant is stopped so as to control the temperature of the target with the heater in the case where the temperature of the target is controlled to be a second temperature higher than the room temperature, wherein in the case of changing the setpoint of the target from the first temperature to the second temperature, when the temperature of the refrigerant rises to reach a first predetermined temperature lower than or equal to the boiling point of the refrigerant, the circulation of the refrigerant is stopped, one of air and an inert gas is fed to the refrigerant circulation line so as to discharge the refrigerant in the target, and simultaneously, the temperature of the target continues to be raised with the heater; and when the temperature of the target rises to reach a second predetermined temperature higher than the boiling point of the refrigerant, the one of the air and the inert gas is again fed to the refrigerant circulation line so as to discharge the refrigerant remaining in the target. | 01-14-2010 |
| 20100011787 | PREVENTION OF REFRIGERANT SOLIDIFICATION - A refrigerant system may utilize CO | 01-21-2010 |
| 20100037635 | METHOD AND APPARATUS FOR COLLECTING A REFRIGERANT - A method and a recovery container for collecting a hydrocarbon refrigerant are disclosed. The method includes releasing the hydrocarbon refrigerant from the refrigeration system, and collecting the released hydrocarbon refrigerant with a recovery container containing a hydrocarbon refrigerant adsorptive substance thereby binding the released hydrocarbon refrigerant to the hydrocarbon refrigerant adsorptive substance. | 02-18-2010 |
| 20100037636 | METHOD FOR SERVICING A REFRIGERATION SYSTEM - A method for servicing a refrigeration system is disclosed. The refrigeration system contains a refrigerant and has a compressor, a high-side section and a low-side section. The method includes the steps of releasing the refrigerant from the refrigeration system from the high-side section; collecting the released refrigerant with a recovery container containing a refrigerant adsorptive substance; charging the refrigeration system with inert gas from the low-side section; and discharging the inert gas from the refrigeration system from the high-side section. | 02-18-2010 |
| 20100050664 | METHOD AND SYSTEM FOR MAINTENANCE OF AN AIR-CONDITION UNIT - It is provided a system for cleaning a blower and an air inlet filter of an air condition unit using condensed water. The system includes a reservoir for condensed water, a first sub-system for facilitating flowing pressurized liquid in a duct having spraying outlets, and a second sub-system for removal of sprayed liquid out of the air condition unit. The cleaning liquid includes condensed water and a cleaning additive. The air inlet filter may rotate on a pair of pulleys, and the filter is exposed to the sprayed liquid by rotating a pulley while spraying. The system includes barriers disposable in a separating position between the cleaned parts and other objects. The system also includes a manipulating handle or an electric motor, for placing the barrier. Electrical circuitry may automatically initiate cleaning the parts on turning-off the air condition unit. The system include a chamber for a cleaning additive and a mixing mechanism for mixing the cleaning additive with the condensed water. The sub-system for removal of sprayed liquid out of the air condition unit includes a drain tray, a used water chamber and a drain pipe. | 03-04-2010 |
| 20100089076 | REFRIGERANT CHARGE INDICATION - A method and apparatus are provided for indicating the status of the refrigerant charge in an air conditioning system based upon the degree of subcooling present in the condensed refrigerant system temperature measurements. The status of the refrigerant charge in the system is indicated in real-time on a service panel for access by a field service technician. The status of the refrigerant charge in the system on a time-average basis for a specified period of operation is presented on an indicator panel. The indicator panel includes a first indicator light indicating that the refrigerant charge is low, a second indicator light indicating that the refrigerant charge is high, and a third indicator light indicating that the refrigerant charge is correct. | 04-15-2010 |
| 20100101245 | FLUORINATED COMPOSITIONS AND SYSTEMS USING SUCH COMPOSITIONS - Disclosed are refrigerant compositions comprising the following components, as expressed in weight percent, and such that the total adds up to 100%, including any additives.
| 04-29-2010 |
| 20100101246 | System and Method For Controlling Working Fluid Charge In A Vapor Compression Air Conditioning System - Vapor compression air conditioning systems are provided with a flow restrictor for transferring working fluid to and from at least one of the compressor low pressure inlet conduit and compressor high pressure outlet conduit to provide for accurate charge adjustment to achieve predetermined fluid sub-cooling. Pressure and temperature measurements are taken at a condenser fluid outlet conduit and provided to a microcontroller for determining fluid sub-cooling and comparing sub-cooling with a predetermined target sub-cooling. A charge addition or recovery apparatus may include a solenoid valve controlled by the microcontroller to more accurately control the addition or recovery of refrigerant fluid charge. | 04-29-2010 |
| 20100107659 | Fixed and variable refrigerant metering system - A refrigerant cooling system includes multiple evaporator coils fed by one variable refrigerant metering device and one or more fixed refrigerant metering devices. To avoid condensed moisture on the coils from being entrained by the supply air and ultimately adversely increasing the humidity of a room or comfort zone of a building, the variable refrigerant metering device delivers refrigerant to the evaporator's lowermost coil at a superheat that is less than that of the other higher coils. To operate the refrigerant system at various loads, two or more compressors are selectively energized individually and in combination for various stages of capacity, while the variable refrigerant metering device is active at each stage. The refrigerant system may include multiple refrigerant circuits that are hermetically isolated from each other, or two or more of the circuits may be in fluid communication with each other. | 05-06-2010 |
| 20100107660 | REFRIGERANT CHARGING DEVICE, REFRIGERATION DEVICE, AND REFRIGERANT CHARGING METHOD - A refrigerant charging device includes: an electric valve provided in a supply pipe; a flow rate control unit for controlling the degree of opening of the electric valve such that the flow rate in the supply pipe lies within a predetermined range, on the basis of a pressure difference between pressure of refrigerant supplied to the supply pipe and the pressure of refrigerant on the suction side of a compressor; an outdoor air temperature sensor for detecting outdoor air temperature; and a low-pressure side pressure sensor for detecting refrigerant pressure on the suction side of the compressor. The pressure difference is a difference between a saturation pressure corresponding to the outdoor air temperature detected by the outdoor air temperature sensor and refrigerant pressure detected by the low-pressure side pressure sensor. | 05-06-2010 |
| 20100126188 | EXCHANGEABLE AIR-CONDITIONING UNIT - An exchangeable air-conditioning unit ( | 05-27-2010 |
| 20100126189 | Service Method And Service Device For A Liquid Cooling System Of An Aircraft - The present invention discloses a service method and a service device ( | 05-27-2010 |
| 20100139296 | Method and Apparatus for Providing Additive Fluids to Refrigerant Circuit - A refrigerant additive supply device can include an outer rigid container, an inner flexible bag positioned in the outer rigid container and defining a space therebetween where the inner flexible bag contains an additive without a refrigerant, a valve in fluid communication with the inner flexible bag, an actuator operably coupled to the valve, and a propellant sealed within the space, where the inner flexible bag has a device pressure that allows flow of the additive into a refrigerant circuit when the actuator is depressed. Other embodiments are disclosed. | 06-10-2010 |
| 20100154442 | Portable Refrigerant Recovery Machine - A refrigerant recovery machine having two opposed and off-set pistons and its use are provided. The pistons are received in cylinders that are able to move depending on the alignment of the pistons. The two pistons in the compressor allow more volume of refrigerant than a single piston and because they are opposed and off-set allows for more even load on the motor. | 06-24-2010 |
| 20100180609 | Compressor Service Tool - In a method for servicing an apparatus having a compressor ( | 07-22-2010 |
| 20100186430 | Method and System for Detecting Low Refrigerant Charge and Air Conditioner Protection System - A method and system for detecting a low charge condition in an air conditioner for a vehicle. The system first determines whether noise factors are present that would interfere with reliably measuring a pressure delta. If noise factors are not present, the system determines a pressure delta value for the compressor by comparing the high side pressure when the clutch is engaged to a high side pressure when the clutch is disengaged. If the pressure delta value is less than a threshold value, a low charge condition may be recorded. When the number of low charge conditions detected exceeds a predetermined number of events, the system may set a temperature diagnostic trouble code, disable the air conditioning system and alert the driver of a potential problem. | 07-29-2010 |
| 20100223937 | Heat Exchanger Coupling Blocking Plug - A blocking plug fitting that does not require brazing is described that fits in matching correspondence with an existing fitting arrangement used to couple refrigerant tubing to a heat exchanger. The blocking plug fitting allows a refrigerant system to be returned to service quickly if a heat exchanger is removed for repair. | 09-09-2010 |
| 20100269518 | WIRE RETAINER - An outdoor unit for an air conditioner/heat pump is provided with a bracket which is attached to the tube sheet of the heat exchanger coil for routing the electrical leads from the electronic components within the unit to a control box located outside thereof. The bracket is mounted without fasteners and is preferably clipped onto a planar structure on the tube sheet by way of opposing tabs on the bracket. The bracket is preferably secured to the planar wall by way of dimples that engage with holes formed in the planar wall. | 10-28-2010 |
| 20100281890 | Refrigerant Charging System and Method for Using Vapor-Phase Refrigerant - A refrigerant charging system and method for charging a refrigeration system with a vapor-phase refrigerant includes a refrigerant source, an input line, a sensor and a pressure regulator. The input line connects the refrigerant source to the refrigeration system. One or more valves are disposed between the refrigerant source and refrigeration system to regulate the pressure of the refrigerant being introduced into the refrigeration system, and the sensor measures the pressure of the refrigerant entering the refrigeration system. A pressure regulator can also be used to regulate the flow of refrigerant. Once the pressure of the refrigerant reaches a predetermined pressure, the refrigeration system is fully charged, and the transfer of refrigerant to the refrigeration system is stopped. The system and method are used to charge the refrigeration system of, e.g., an automotive vehicle, and the refrigeration is carbon dioxide. | 11-11-2010 |
| 20100287960 | Modular Air-Conditioning System and Method for the Operation Thereof - A modular climate control system, particularly for generating cold and/or heat, includes one or more modules, a working medium or coolant being condensed, liquefied, relieved and re-evaporated in a circuit in the modules, and the heat and/or cold generated in the process is delivered to corresponding secondary circuits via heat exchangers. High flexibility in the use of the system, and tremendous simplification in the set-up and modification are achieved because a common collector including collector tubes is provided for several modules. The modules are detachably connected to the collector, and the collector connects the modules to the respective secondary circuits. | 11-18-2010 |
| 20100307171 | Cooling Infrastructure Leveraging a Combination of Free and Solar Cooling - Energy-efficient data center cooling techniques that utilize free cooling and/or solar cooling are provided. In one aspect, a cooling system is provided including a cooling tower; one or more modular refrigeration chiller units; and a water loop that can be selectively directed through the cooling tower, through one or more of the modular refrigeration chiller units or through a combination thereof. Another cooling system is provided including a solar cooling unit; one or more modular refrigeration chiller units; and a water loop that can be selectively directed through the solar cooling unit, through one or more of the modular refrigeration chiller units or through a combination thereof. | 12-09-2010 |
| 20100326094 | PLASMA PROCESSING APPARATUS AND MAINTENANCE METHOD THEREFOR - In a plasma processing apparatus, a check valve is installed close to a refrigerant inlet of a compressor. When performing maintenance of a sample stage, refrigerant collected from a refrigerant flow path is temporarily stored in a flow path section extending from an expansion valve to the check valve, making it possible to perform the maintenance without changing the amount of refrigerant in the refrigerating cycle. With a refrigerant storage tank, a refrigerant supply valve, and a refrigerant discharge valve included in the refrigerating cycle, when maintenance of the compressor, a condenser, or the expansion valve is performed, the refrigerant collected from the refrigerating cycle can be put in use again. | 12-30-2010 |
| 20100326095 | USE OF R-1233 IN LIQUID CHILLERS - This invention relates to the use of chloro-trifluoropropenes as refrigerants in negative-pressure liquid chillers and methods of replacing an existing refrigerant in a chiller with chloro-trifluoropropenes. The chloro-trifluoropropenes, particularly 1-chloro-3,3,3-trifluoropropene, have high efficiency and unexpectedly high capacity in liquid chiller applications and are useful as more environmentally sustainable refrigerants for such applications, including the replacement of R-123 and R-11. | 12-30-2010 |
| 20110000234 | AIR CONDITIONING APPARATUS AND REFRIGERANT QUANTITY DETERMINATION METHOD - An air conditioning apparatus and a refrigerant quantity determination method are provided, whereby a refrigerant quantity can be determined in a simple and accurate manner without compromising the reliability of a compressor. A refrigerant circuit ( | 01-06-2011 |
| 20110005243 | METHODS AND SYSTEMS FOR UTILIZING A MICRO-CHANNEL HEAT-EXCHANGER DEVICE IN A REFRIGERATION CIRCUIT - A mini-channel heat-exchanger for a refrigeration circuit having an inlet manifold; a first return manifold; a first heat exchange pass in fluid communication between the inlet manifold and the first return manifold, the first heat exchange pass including a plurality of mini-channels; and a system charge tank in direct fluid communication with the first return manifold. | 01-13-2011 |
| 20110041522 | ADAPTER SYSTEM AND METHOD - Various embodiments of adapter systems and related apparatus, and methods of operating the same are described. The adapter of the systems is couplable to an outlet of a fluid source and an inlet of a routing device. The adapter includes a plunger configured to engage an integrated valve of the fluid source and to receive a member of the routing device. The routing device member includes an end capable of breaking a seal. Coupling of the routing device to the outlet may advance the plunger such that plunger engages the integrated valve and at least partially opens the integrated valve. | 02-24-2011 |
| 20110041523 | CHARGE MANAGEMENT IN REFRIGERANT VAPOR COMPRESSION SYSTEMS - A refrigerant vapor compression system includes a compression device, a refrigerant heat rejection heat exchanger, an expansion device, and a refrigerant heat absorption heat exchanger disposed in a closed-loop refrigerant circuit in serial refrigerant flow relationship. A refrigerant storage device is connected by at least one refrigerant line in fluid communication with the refrigerant circuit and a flow control device interdisposed in that refrigerant line. Refrigerant may be selectively withdrawn from and returned to the high-pressure side of the refrigerant circuit; or withdrawn from and returned to the low-pressure side of the refrigerant circuit; or withdrawn from the high-pressure side of the refrigerant circuit and returned to the low-pressure side of the refrigerant circuit. The refrigerant may be withdrawn from and returned to the refrigerant circuit during operation or during an off-cycle. | 02-24-2011 |
| 20110048036 | Apparatus and method for individual to maintenance air conditioning unit - An air conditioning maintenancing system employs a lifting unit which does not in operation require a specialized support structure that must be used and transported with the lifting unit. Instead the lifting unit is designed for utilization with commonly existing construction equipment that can, after being utilized with the lifting unit, be used at separate locations to carry out different tasks. | 03-03-2011 |
| 20110061407 | BACKGROUND TANK FILL BASED ON REFRIGERANT COMPOSITION - A portable recovery unit for automatically filling a background tank of blended refrigerant includes a main tank for holding recovered refrigerant from a vehicle A/C system which has a first chemical composition, and an auxiliary tank for holding an auxiliary supply of fresh refrigerant which has a second refrigerant composition. The auxiliary tank is arranged in fluid communication with the main tank so that fluid can be transferred from the auxiliary tank to the main tank. An electronic controller controls the flow of fluid from the auxiliary tank to the main tank. A refrigerant identifier is coupled to the main tank to sample and analyze the refrigerant in the main tank in order to determine the chemical composition of the refrigerant in the main tank, so the refrigerant in the main tank can be purified to an acceptable level based on that analysis. | 03-17-2011 |
| 20110079026 | Refrigerant - A refrigerant that is azeotropic or near-azeotropic comprises a binary blend of R744 and R41. In one embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R41. | 04-07-2011 |
| 20110088414 | AIR CONDITIONING APPARATUS REFRIGERANT QUANTITY DETERMINATION METHOD AND AIR CONDITIONING APPARATUS - A refrigerant circuit of an air conditioning apparatus includes a heat source unit, a utilization unit having a utilization-side heat exchanger, and liquid and gas refrigerant connection pipes interconnecting the heat source unit and the utilization unit. The heat source unit has an adjustable capacity compressor, a heat source-side heat exchanger, an expansion mechanism and an accumulator. The refrigerant circuit can perform at least cooling operation. Compressor frequency, degree of superheat, and degree of supercooling are stored in a stable state where the degree of supercooling has been made equal to or greater than a first predetermined value. After a predetermined time period, the degree of supercooling is detected while compressor frequency and degree of superheat become the stored compressor frequency and degree of superheat. The detected degree of supercooling is compared with the stored degree of supercooling to determine adequacy of the quantity of refrigerant inside the refrigerant circuit. | 04-21-2011 |
| 20110113795 | MODULAR HEATING, VENTILATING, AIR CONDITIONING, AND REFRIGERATION SYSTEMS AND METHODS - Embodiments of a modular air conditioning (AC) unit include a base unit and a blower selected from a group of blowers configured for different cooling capacities. The module AC unit also includes at least one heat exchanger unit selected from a group of substantially identical modular heat exchanger units, the number of heat exchanger units being selected based upon the desired cooling capacity. The at least one heat exchanger unit and the blower are assembled to the base unit to form a modular air conditioning circuit. | 05-19-2011 |
| 20110126558 | USE OF LOW GWP REFRIGERANTS COMPRISING CF3I WITH STABLE LUBRICANTS - The invention pertains to heat transfer compositions, particularly to automobile refrigerants comprising a hydrofluoroalkene, an iodocarbon, and at least one lubricant having hydrogen atoms and carbon atoms, wherein no more than 17% of the total number of hydrogen atoms which are attached to a carbon atom are tertiary hydrogen atoms. | 06-02-2011 |
| 20110146304 | INTERNAL CLEARING FUNCTION FOR A REFRIGERANT RECOVERY/RECHARGE MACHINE - An apparatus and method providing a refrigeration servicing system that comprises a clean refrigerant source, a recovery circuit and a flushing circuit. The recovery circuit can be configured to recover refrigerant from a cooling system. After recovery cycle is completed, the flushing circuit that is coupled to the recovery circuit can flush clean refrigerant through the recovery circuit. A housing can be provided and configured to house the refrigerant source, the recovery circuit and the flushing circuit. | 06-23-2011 |
| 20110167841 | COMPOSITIONS AND METHODS FOR INJECTION OF SEALANTS AND/OR DRYING AGENTS INTO AIR CONDITIONING AND REFRIGERATION SYSTEMS - A method for maintaining a charged and pressurized air conditioning or refrigeration system, such method including introducing into the system fluid of the air conditioning or refrigeration system a hydrolytic drying agent, and distributing the hydrolytic drying agent throughout the system fluid; methods of maintaining a charged and pressurized air conditioning or refrigeration system including introducing a hydrolytic drying agent and a sealing agent; devices for maintaining a charged and pressurized air conditioning or refrigeration system which include a sealed vessel containing a hydrolytic drying agent and a sealant; kits for the same. | 07-14-2011 |
| 20110214436 | AIR CONDITIONING SYSTEM RECHARGING METHOD AND APPARATUS - A method of charging or recharging an air conditioning wherein an initial amount of refrigerant is introduced, followed by additional introductions of refrigerant during injection pulses. The pulse periods are adjusted dynamically during the charging/recharging process based on feedback obtained after each pulse related to how much refrigerant was transferred during the previous pulse. Also, a system for implementing the above-mentioned method. | 09-08-2011 |
| 20110219790 | System and Method For Charging HVAC System - A method of charging an HVAC system by determining a relationship between a liquid line temperature of the HVAC system, a suction line pressure of the HVAC system, and an ambient outdoor temperature of the HVAC system. A method of charging an HVAC system by adjusting a mass of refrigerant in the HVAC system to approach a target minimum liquid line temperature. A method of charging an HVAC system by testing the HVAC system according to at least three sets of test parameters, two of the three sets of test parameters comprising testing the HVAC system at substantially a same outdoor ambient temperature and at least one of the remaining set of test parameters comprising testing the HVAC system at a different outdoor ambient temperature. | 09-15-2011 |
| 20110296854 | Method of Adding Adjacent High-Temperature Heating-Side for Absorption Heat - This invention belongs to the area of heat pump/refrigeration technology, which provides absorption heat pump of multiterminal heating and the ways of additional adjacent high-temperature heating-side. | 12-08-2011 |
| 20120011863 | METHODS OF SERVICING MOBILE AIR CONDITIONING SYSTEMS - The present invention relates to methods and systems for introducing one or more hydrohalocarbon refrigerants into a heat transfer system from a vessel by recovering the one or more hydrohalocarbon refrigerants from the heat transfer system; monitoring the vapor pressure in the vessel and if the vapor pressure in the vessel becomes greater than 3 psi over the expected saturation pressure for the one or more hydrohalocarbon refrigerants then releasing vapor from the vessel; and returning said one or more hydrohalocarbon refrigerants to the heat transfer system by drawing liquid refrigerant from the vessel. | 01-19-2012 |
| 20120011864 | Refrigerant Additive Compositions Containing Perfluoropolyethers - The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity, or energy efficiency of a refrigeration, air conditioning or heat transfer system. | 01-19-2012 |
| 20120017610 | Refrigerant - A refrigerant that is azeotropic or near-azeotropic comprises a binary blend of R744 and R41. In one embodiment the binary blend has a molar composition of 20 to 60 percent R744, the remainder being R41. | 01-26-2012 |
| 20120023972 | Refrigerant Charging Tool And Method - Gas vaporizer for flashing liquid to vapor received from a source prior to introduction into a compressor or the like, such as in air conditioning or refrigeration systems. In certain embodiments the vaporize includes an adapter member for connection to a liquid source, a connector member having a plurality of flow passages for facilitating the transfer of heat to fluid present therein to vaporize the same, a body portion providing visual access such as via one or more sight glasses to an internal chamber therein for visual confirmation that liquid has been vaporized, and a hose connecting member for connection to a point of destination such as a compressor. In certain embodiments, the connector has an axial bore containing a high thermal conductive material. | 02-02-2012 |
| 20120023973 | METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS - Compressor with double compression chamber and gas purification process, having a set of movable mechanisms and fixed parts, and procedures for the preparation of refrigerators and hermetic compressors before filling with refrigerant gas, which greatly enhances the energetic efficiency and useful life of refrigeration compressors. Additional, by adding a process tube, made of copper, steel, or any other appropriate material to the side wall of the hermetic or semi-hermetic compressor, on its bottom, or attached vertically to the central base of the compressor. This additional tube and the traditional suction tubes, discharge process, follows an alternative construction format to enhance the efficiency and useful life of a refrigeration system. | 02-02-2012 |
| 20120031116 | System and Method for Accurately Recharging an Air Conditioning System - A method of adding refrigerant to an air conditioning system. The method includes measuring a first pressure inside of the air conditioning system and a second pressure inside of a container that holds refrigerant being added to the air conditioning system. The method also includes comparing the difference between the two measured pressures to empirical data in order to determine how long to pulse additional refrigerant into the air conditioning system. In addition, an apparatus configured to add refrigerant to an air conditioning system. | 02-09-2012 |
| 20120031117 | EVAPORATIVE COOLER MEDIA KIT AND METHOD OF USE - Evaporative cooler media kits and methods of use are disclosed. The media kit is for providing replacement media for use in one or more of a plurality of evaporative coolers. The media kit comprises a plurality of main media components, a plurality of distribution media components, a first width adjustment component, and a second width adjustment component. The method is for installing replacement media in an evaporative cooler is disclosed. The method comprises arranging a plurality of main media components side by side within the opening of the frame, inserting at least one distribution media component in a first gap extending between a top surface of the main media components and a top of the frame, and inserting at least one width adjustment component in a second gap extending between a side surface of the main media components and a side of the frame. | 02-09-2012 |
| 20120073313 | REFIGERANT SYSTEM AND A CONTROL METHOD THE SAME - The present invention relates to the refrigerant system in which the refrigerant amount stored in the accumulator may be adjusted by the super cooling adjustment unit according to the indoor conditioning load. Therefore, according to the present invention, the flow refrigerant amount on the refrigerant cycle may be optimally adjusted according to the indoor conditioning load, and there is an advantage that the operation efficiency may be more improved. | 03-29-2012 |
| 20120090336 | METHOD FOR ACCURATELY RECHARGING A/C SYSTEMS - A refrigerant recovery unit for accurately filling a refrigerant system with a refrigerant is provided which includes a storage vessel for holding refrigerant, sensors to assist in determining the pressure of the refrigerant in the storage vessel, a controller to control the flow of refrigerant from the storage vessel to the refrigerant system to be serviced, and a heating device to heat the refrigerant, which is activated only if heating is required, as determined by data received by the controller. | 04-19-2012 |
| 20120167599 | COMPOSITION COMPRISING CIS-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE AND TRANS-1,2-DICHLOROETHYLENE, APPARATUS CONTAINING SAME AND METHODS OF PRODUCING COOLING THEREIN - Disclosed herein is an air conditioning or refrigeration apparatus, and in particular, a chiller apparatus containing a composition comprising 1,1,1,4,4,4-hexafluoro-2-butene and 1,2-dichloroethylene, wherein the 1,1,1,4,4,4-hexafluoro-2-butene is cis isomer or primarily cis isomer and wherein the 1,2-dichloroethylene is trans isomer or primarily trans isomer. These chillers may be flooded evaporators or direct expansion evaporators, which utilize centrifugal compressors. Also disclosed herein are methods for producing cooling comprising evaporating a composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene in the vicinity of a body to be cooled. Also disclosed herein are compositions comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene, wherein the cis-1,1,1,4,4,4-hexafluoro-2-butene is present at 50 to about 60 weight percent. | 07-05-2012 |
| 20120186277 | APPARATUS AND METHOD FOR INSTALLATION BY UNLICENSED PERSONNEL OF A PRE-CHARGED, DUCTLES HEATING/COOLING SYSTEM - A pre-charged heating/cooling system is shown for installation by unlicensed personnel. An outside unit includes an outside coil, outside fan, compressor and a reversing valve. An inside unit has an inside coil, inside fan for drawing air through the inside coil and discharging the conditioned air into the enclosed space, and a power cord connection. Electrical connections between the inside unit and the outside unit are secured in position by an electrical disconnect cover. A covering box covers both the electrical and refrigerant connections to the outside unit. | 07-26-2012 |
| 20120192576 | SYSTEMS, METHODS AND APPARATUS FOR SERVICING A REFRIGERATION SYSTEM - Systems, methods and apparatuses for servicing a refrigeration system are described herein. A system may include a fluid source and a device is capable of coupling to the fluid source, a measuring device and a fluid receiving system. The device may include a valve disposed passage disposed in a body of the apparatus that communicates with the fluid source, the measuring device and the fluid receiving system. A portion of the valve being engageable with a self-sealing valve of the refrigerant supply while inhibiting fluid flow between the fluid source and the measuring device and/or between the measuring device and the fluid receiving system. | 08-02-2012 |
| 20120240601 | METHOD AND APPARATUS FOR PROVIDING ADDITIVE FLUIDS TO REFRIGERANT CIRCUIT - A refrigerant additive supply device can include an outer rigid container, an inner flexible bag positioned in the outer rigid container and defining a space therebetween where the inner flexible bag contains an additive without a refrigerant, a valve in fluid communication with the inner flexible bag, an actuator operably coupled to the valve, and a propellant sealed within the space, where the inner flexible bag has a device pressure that allows flow of the additive into a refrigerant circuit when the actuator is depressed. Other embodiments are disclosed. | 09-27-2012 |
| 20120240602 | REFRIGERANT WITH LUBRICATING OIL FOR REPLACEMENT OF R22 REFRIGERANT - An apparatus and method wherein potential ozone layer-damaging chlorodifluoromethane (Refrigerant R-22) is substituted with a mix of less environmentally damaging refrigerants pentafluoroethane and tetrafluoroethane in chlorodifluoromethane-based air-cooling systems mainly in residential cooling. While less environmentally damaging than chlorodifluoromethane, the substitute refrigerant has a temperature-pressure relationship similar to that of chlorodifluoromethane, making the substitute refrigerant suitable for use with chlorodifluoromethane-based air-cooling systems. In this event, it is mixed with a relatively small percentage of a lubricating oil which is compatible with both the unit refrigerant and typical R-22 system design. | 09-27-2012 |
| 20120247131 | METHOD FOR MAINTAINING A VEHICLE AIR CONDITIONING UNIT AND SERVICE APPARATUS THEREFOR - A method for servicing a vehicle air-conditioning system operated with a closed coolant circulation system, in which in a first servicing phase, a circulation mixture of refrigerant, compressor oil and, if appropriate, further mixture components is sucked out from a vehicle air-conditioning system into a separator stage by means of a compressor via a separator and in the process refrigerant is separated from the sucked-out circulation mixture by means of the separator, compressed and collected, and its quantity is determined. In a second servicing phase, the refrigerant circulation system of the vehicle air-conditioning system is largely emptied of residual content by means of a vacuum pump. The residual gases which are pumped out in the second servicing phase are conducted through the separator stage by means of the compressor, and the quantity of residual refrigerant collected in the process is determined. | 10-04-2012 |
| 20120272667 | AIR CONDITIONING LUBRICANT DELIVERY VESSEL, METHOD AND SYSTEM - A vessel for use in an air conditioner recharging system contains a desiccant that may limit moisture in a hygroscopic fluid, such as liquid lubricant and/or dye. The vessel may thus limits the amount of moisture introduced as a result of replacing or injecting lubricant. The vessel may contain an amount of pure lubricant for the air-conditioning system, or a lubricant and fluorescent dye to aid in detecting leaks. | 11-01-2012 |
| 20120272668 | METHOD OF SELECTING REFRIGERANT-LUBRICANT COMBINATIONS - The present invention provides methods for selecting refrigerant and lubricant combinations for use in heat transfer cycle systems and provides methods for operating said heat transfer systems. More particularly, the invention provides methods to select lubricant and refrigerant combinations for a heat transfer cycle system wherein at the lower temperatures of the heat transfer cycle the refrigerant and lubricant are miscible and at the upper temperatures of the heat transfer cycle the refrigerant and lubricant are phase separated and such that the density phase inversion temperature of the combination is below the upper operating temperature of the heat transfer cycle. | 11-01-2012 |
| 20120291457 | Pressure Decay Leak Check Method and Apparatus - Refrigerant recovery unit is provided that includes steps to test for refrigerant leaks. The steps include providing a close loop with the hoses that connect to a refrigerant system, measuring the ambient temperature, calculating the vapor pressure with the ambient temperature, calculating the test pressure as a percentage of the vapor pressure, filling the unit with the refrigerant, and performing a pressure leak test. | 11-22-2012 |
| 20120297799 | METHOD AND EQUIPMENT FOR SERVICING COOLING SYSTEMS IN VEHICLES - In a method for servicing an air conditioning system of a motor vehicle, surrounding areas in which there is a risk of leakage of inflammable coolant is ventilated such that air in the surrounding areas is suctioned out and discharged from the surrounding areas. | 11-29-2012 |
| 20120318005 | APPARATUS AND METHOD FOR INSTALLATION BY UNLICENSED PERSONNEL OF A PRE-CHARGED, DUCTLESS HEATING/COOLING SYSTEM - A pre-charged heating/cooling system is shown for installation by unlicensed personnel. An outside unit includes an outside coil, outside fan, compressor and a reversing valve. An inside unit has an inside coil, inside fan for drawing air through the inside coil and discharging the conditioned air into the enclosed space, and a power cord connection. A cable sheath contains all connections from the inside unit to the outside unit with electrical connections being secured in position on the outside unit by a cover and a bracket. An expandable window sill holds and seals the cable sheath in a window opening. | 12-20-2012 |
| 20120324920 | SERVICING DEVICES AND METHODS OF USE THEREOF - Servicing devices and methods of use for servicing refrigerant systems are described herein. The servicing device may include a body and a plunger. The body may include a first fluid port, a second fluid port, and a passage. The first fluid port operatively couples to a fluid port of a fluid source. The second fluid port operatively couples to a refrigeration system. The passage is in fluid communication with the fluid ports of the body and in fluid communication with a measuring device. A plunger is at least partially disposed in the passage of the body. A first portion of the plunger is engagable with an integrated valve of the fluid source. Adjustment of the plunger to a released position allows communication between the second fluid port and the measuring device while inhibiting communication between the first fluid port and the fluid source. | 12-27-2012 |
| 20120324921 | METHOD FOR RECOVERING REFRIGERANT FROM A REFRIGERATION EQUIPMENT - A method for recovering refrigerant from an external refrigeration equipment by a refrigerant recovery device includes recovering the refrigerant from the refrigeration equipment in a main recovering process. A small amount of heated refrigerant is recharged into the refrigeration equipment in a temporary refrigerant recharge process. An additional recovering process for emptying of a residual refrigerant from the refrigeration equipment is performed after finishing the temporary refrigerant recharge process. | 12-27-2012 |
| 20120324922 | System and Method for Accurately Recharging an Air Conditioning System - A method of adding refrigerant to an air conditioning system. The method includes measuring a first pressure inside of the air conditioning system and a second pressure inside of a container that holds refrigerant being added to the air conditioning system. The method also includes comparing the difference between the two measured pressures to empirical data in order to determine how long to pulse additional refrigerant into the air conditioning system. In addition, an apparatus configured to add refrigerant to an air conditioning system. | 12-27-2012 |
| 20130008192 | System and Method for Improving Charge Accuracy by Temperature Compensation - A method and charging apparatus for adding refrigerant to an air conditioning system are provided. The method includes calculating a temperature differential by measuring a first temperature of a refrigerant inside of a refrigerant container and measuring a second temperature either at the air conditioning system or the ambient temperature. The method further includes using the temperature differential to calculate a compensation amount of refrigerant to add to a previously determined recommended amount of refrigerant based on the type of air conditioning system being charged. | 01-10-2013 |
| 20130014520 | Apparatus to Clear Oil from the Hoses and Front End of a Recovery Recharge Machine - A refrigerant recovery unit is provided that can recover and recharge refrigerant. The unit is further configured with a pair of service hoses and a refrigerant control circuit operable to receive and transport the refrigerant between the hoses and the storage vessel and to process the refrigerant to substantially remove contaminants from the refrigerant. A fluid connector is provided in fluid communication with the hoses to enable the refrigerant to flow between the hoses and to establish a closed loop through the refrigerant control circuit, and a controller is operatively connected to the refrigerant control circuit and configured to control a flow of the refrigerant through the refrigerant control circuit and through the fluid connector. | 01-17-2013 |
| 20130025299 | COMPOSITION COMPRISING 2,3,3,3-TETRAFLUOROPROPENE AND 1,1,1,2-TETRAFLUOROETHANE, CHILLERS CONTAINING SAME AND METHODS OF PRODUCING COOLING THEREIN - Disclosed herein is a chiller apparatus containing a composition comprising from about 6 to about 70 weight percent 2,3,3,3-tetrafluoropropene and from about 30 to about 94 weight percent 1,1,1,2-tetrafluoroethane. Also disclosed herein are compositions comprising from about 58.0 to about 59.5 weight percent 2,3,3,3-tetrafluoropropene and from about 42.0 to about 40.5 weight percent 1,1,1,2-tetrafluoroethane. Also disclosed herein are compositions comprising from about 54.0 to about 56.0 weight percent 2,3,3,3-tetrafluoropropene and from about 46.0 to about 44.0 weight percent 1,1,1,2-tetrafluoroethane. Also disclosed herein is a composition comprising a refrigerant consisting essentially of from about 58.0 to about 59.5 weight percent 2,3,3,3-tetrafluoropropene and from about 42.0 to about 40.5 weight percent 1,1,1,2-tetrafluoroethane. Also disclosed herein is a composition comprising a refrigerant consisting essentially of from about 54.0 to about 56.0 weight percent 2,3,3,3-tetrafluoropropene and from about 46.0 to about 44.0 weight percent 1,1,1,2-tetrafluoroethane. Also disclosed herein is a method for producing cooling in a chiller. The method comprises (a) evaporating a liquid refrigerant comprising from about 6 to 70 weight percent 2,3,3,3-tetrafluoropropene and from about 30 to 94 weight percent 1,1,1,2-tetrafluoroethane in an evaporator having a heat transfer medium passing therethrough thereby producing a vapor refrigerant; and (b) compressing the vapor refrigerant in a compressor, wherein the volumetric cooling capacity of the refrigerant is greater than the individual volumetric cooling capacities of both 2,3,3,3-tetrafluoropropene and 1,1,1,2-tetrafluoroethane alone. Also disclosed herein is a method for replacing a refrigerant in a chiller designed for using HFC-134a or CFC-12 as refrigerant, comprising charging said chiller with a composition comprising a refrigerant consisting essentially of from about 6 to 70 weight percent 2,3,3,3-tetrafluoropropene and from about 30 to 94 weight percent 1,1,1,2-tetrafluoroethane thereby increasing the cooling capacity of the chiller. | 01-31-2013 |
| 20130047635 | STARTING METHOD FOR A REFRIGERANT RECOVERY, RECYCLING AND RECHARGING SYSTEM - A method is provided for operating a refrigerant recovery, recycling and recharging system having a compressor to recover, recycle, and/or recharge the refrigerant in a closed refrigeration circuit coupled to the system. The method includes compressing refrigerant with the compressor, stopping the compressor, re-starting the compressor, and relieving a pressure differential across the compressor at the time of re-starting the compressor. | 02-28-2013 |
| 20130047636 | METHOD AND SYSTEM FOR FILLING A REFRIGERANT INTO A REFRIGERATION SYSTEM - A method of filling refrigerant into a refrigeration system by means of a filling system comprising a tank includes the step of pressurizing the tank by means of a conditioning process to a predetermined differential pressure above the saturation pressure of the actual ambient temperature before the refrigerant is filled into the refrigeration system. | 02-28-2013 |
| 20130055733 | HEAT-TRANSFER FLUIDS AND USE THEREOF IN COUNTERCURRENT HEAT EXCHANGERS - The invention relates to a ternary composition comprising difluoromethane, 3,3,3-trifluoropropene and a hydrocarbon-derived compound containing at least two fluorine atoms and having a boiling point of between −30 and −18° C., which is selected from 1,1-difluoroethane, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. This composition is particularly suitable for use as a heat-transfer fund in the presence of countercurrent heat exchangers. | 03-07-2013 |
| 20130061612 | REFRIGERANT STORAGE IN SECONDARY LOOP REFRIGERATION SYSTEMS - A process and system for storing and recovering a secondary refrigerant such as carbon dioxide in a secondary loop refrigeration system after a shutdown of the primary refrigeration system using ionic liquids is described. The process eliminates the release of the secondary refrigerant into the environment and the need to recharge the secondary loop after a shutdown of the primary refrigeration system. | 03-14-2013 |
| 20130061613 | HEAT-TRANSFER FLUID FOR A CENTRIFUGAL COMPRESSOR - The invention relates to a process for cooling or heating a fluid or a body by means of a vapour compression circuit comprising a centrifugal compressor and containing a heat-transfer fluid, the heat-transfer fluid comprising at least two compounds selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 1,1,1,2-tetrafluoropropene, 1,1-difluoroethane and 3,3,3-trifluoropropene, in which: the ratio of the Mach number of the centrifugal compressor to the Mach number which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,1,2-tetrafluoroethane in the vapour compression circuit is greater than or equal to 0.97 and less than or equal to 1.03; the compression ratio of the centrifugal compressor is less than or equal to the compression ratio which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,12-tetrafluorethane in the vapour compression circuit. The invention also relates to equipment suitable for implementing this cooling or heating process, and also to a process for converting existing equipment. | 03-14-2013 |
| 20130061614 | AIR CONDITIONER AND METHOD FOR CONTROLLING THE SAME - An air conditioner includes a first flow rate regulator for controlling an amount of refrigerant supplied into a receiver, a second flow rate regulator for controlling an amount of refrigerant introduced from the receiver into a gas/liquid separator, a first detection unit for detecting an amount of refrigerant stored in the receiver, and a control unit for controlling an opening degree of the first or second flow rate regulator, based on information of at least one of the amount of refrigerant detected by the first detection unit and an amount of refrigerant circulating in the air conditioner. | 03-14-2013 |
| 20130067938 | METHOD FOR SELECTING LUBRICANTS FOR HEAT PUMPS - Provided is a method for selecting a lubricant and a refrigerant for use in a vapor-compression refrigeration device such that the combination of the lubricant and refrigerant produces a fluid system having a lubricant-rich phase and a refrigerant-rich phase, yet exhibits miscible-type properties. | 03-21-2013 |
| 20130098072 | AIR CONDITIONER AND CONTROL METHOD THEREOF - An air conditioning system has a controller and a receiver located between an indoor and outdoor units. The receiver serves as an auxiliary reservoir for refrigerant. The controller generates signals to adjust the amount of refrigerant to be stored in this reservoir as a way of adjusting the amount of refrigerant flowing in the system during various modes of operation. By increasing or decreasing the amount of refrigerant in the receiver, the controller may achieve or maintain a desired level of performance and/or efficiency. | 04-25-2013 |
| 20130118187 | REFRIGERANT CHARGING ASSEMBLIES AND METHODS OF USE - Refrigerant charging systems and methods of use are described herein. A refrigerant charging system may include a conduit, a valve releasably connectable to the outlet portion and coupled to a first end of the conduit; and a disconnect coupler fitting connected to a second end of the conduit. The disconnect coupler fitting may include a control structure positioned in a hollow body that, during use, allows refrigerant flow to the refrigerant circuit. The control structure may include one or more openings that allow controlled leakage of fluid from the refrigerant charging assembly when the refrigerant charging assembly is disconnected from at least the refrigerant service unit. | 05-16-2013 |
| 20130133344 | RENEWAL METHOD OF AIR-CONDITIONING UNIT FOR VEHICLE AND AIR-CONDITIONING UNIT FOR VEHICLE - A renewal method of an air-conditioning unit for vehicle in which an air-conditioning unit using a former refrigerant disposed in a frame mounted on a vehicle is renewed to an air-conditioning unit using an alternative refrigerant, the renewal method including a removal step of: a removing the existing air-conditioning unit from the frame; an assembly step of disposing the new air-conditioning unit, which is configured so as to be capable of fitting in the frame, in the frame; and a filling step of filling the alternative refrigerant into the new air-conditioning unit. The circulating amount of refrigerant in the new air-conditioning unit is increased so as to be larger than that in the previous air-conditioning unit, and the heat exchange capacity per unit volume of each of the indoor heat exchanger and the outdoor heat exchanger is made larger than that before the renewal. | 05-30-2013 |
| 20130145778 | HEAT TRANSFER COMPOSITIONS AND METHODS - Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) HFC-32; (b) HFC-125; (c) HFO-1234yf and/or HFO-1234ze; (d) HFC-134a. In certain non-limiting aspects, such refrigerants may be used as a replacement for R-404A. | 06-13-2013 |
| 20130160470 | Air Conditioner Self-Charging And Charge Monitoring System - A method for determining a level of refrigerant charge in a vapor compression system having a compressor, a condenser, an expansion device and an evaporator operatively connected in serial relationship in a refrigerant flow circuit having a refrigerant, includes receiving information indicative of at least one of a compressor torque or compressor current; and determining whether the refrigerant charge is within a defined tolerance or whether the refrigerant is to be added or recovered in response to the receiving of the information. | 06-27-2013 |
| 20130174588 | REFRIGERATION MONITORING SYSTEM AND METHOD - A system is provided and may include a refrigeration circuit having a condenser, a first sensor producing a signal indicative of a detected condenser temperature of the condenser, and processing circuitry in communication with the first sensor. The processing circuitry may determine a derived condenser temperature independent from information received from the first sensor and may compare the derived condenser temperature to the detected condenser temperature to determine a charge level of the refrigeration circuit. | 07-11-2013 |
| 20130186114 | HEAT TRANSFER COMPOSITIONS OF IMPROVED MISCIBILITY WITH LUBRICANT OIL - The invention relates to a composition comprising:
| 07-25-2013 |
| 20130186115 | LOW GWP HEAT TRANSFER COMPOSITIONS - Heat transfer compositions and methods including (a) HFC-32; (b) HFO-1234ze; and (c) either or both of HFC-152a and/or HFC-134a. | 07-25-2013 |
| 20130205810 | METHOD TO INDICATE FILTER REPLACEMENT IN A REFRIGERANT RECOVERY AND RECHARGE DEVICE - A refrigerant recovery and recharge device is configured to be connected to refrigeration equipment. The device includes a filter configured to filter refrigerant and removal contaminants in recovered refrigerant. The filter includes a fuse configured to indicate when the filter should be replaced. | 08-15-2013 |
| 20130205811 | SERVICE UNIT FOR VEHICLE AIR-CONDITIONING SYSTEMS AND METHOD FOR REMOVING THE COOLANT OR A COOLANT/COMPRESSOR OIL MIXTURE FROM A VEHICLE AIR-CONDITIONING SYSTEM - The invention relates to a service unit for vehicle air-conditioning systems, which is provided with an emptying and filling device for removing the coolant or a coolant/compressor oil mixture from a vehicle air-conditioning system and replenishing the vehicle air-conditioning system with coolant and optionally with compressor oil. The device can include at least one tank for coolant and a vacuum pump for generating a negative pressure in the vehicle air-conditioning system emptied of coolant or coolant/compressor oil mixture for a subsequent intake of coolant and optionally compressor oil into the vehicle air-conditioning system to be replenished. A chimney-like gas-collecting chamber having upper and lower openings can be arranged inside the service unit and is otherwise sealed off from the surrounding atmosphere. | 08-15-2013 |
| 20130205812 | METHOD OF PART REPLACEMENT FOR REFRIGERATION CYCLE APPARATUS AND REFRIGERATION CYCLE APPARATUS - A part replacement method replaces a part of a refrigeration cycle apparatus including a compressor, a heat source side heat exchanger, an expansion device, a heat exchanger related to heat medium, and first and second refrigerant flow closing devices. The first and second refrigerant flow closing devices control a flow of a refrigerant into and out of an outdoor unit accommodating the compressor and the heat source side heat exchanger. The method includes a pump-down step of closing the first refrigerant flow closing device, allowing the refrigerant in a pressure reduction section to flow into the outdoor unit and reducing a pressure in the reduction section until a set pressure or time is reached, a flow closing step of closing the second refrigerant flow closing device, and a part replacement step of removing the part from the refrigerant circuit by heating to replace the part. | 08-15-2013 |
| 20130205813 | METHOD OF PART REPLACEMENT FOR REFRIGERATION CYCLE APPARATUS - A part replacement method for replacement of a part of a refrigeration cycle apparatus includes a refrigerant circuit in which a flammable refrigerant is circulated and a container connecting device for controlling the refrigerant such that the refrigerant is allowed to flow out of the refrigerant circuit. The method includes a refrigerant recovery step of allowing the refrigerant to flow out of the refrigerant circuit through the container connecting device, a pressure reduction step of connecting a pressure reducing device to the container connecting device to reduce a pressure in the refrigerant circuit until the pressure in the refrigerant circuit reaches a set pressure or a setting time is reached, and a part replacement step of removing the part from the refrigerant circuit by heating to replace the part. | 08-15-2013 |
| 20130219927 | AIR CONDITIONER AND CONTROL METHOD THEREOF - Provided is an air conditioner. The air conditioner including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion device includes a supercooling device for supercooling a refrigerant condensed in the outdoor heat exchanger or the indoor heat exchanger, an injection passage through which the refrigerant passing through the supercooling device is introduced into an injection inflow part of the compressor, a bypass passage extending from the injection passage to a suction part of the compressor to bypass the refrigerant, and a passage opening/closing part disposed in at least one of the injection passage and the bypass passage to selectively block a flow of the refrigerant. | 08-29-2013 |
| 20130219928 | REFRIGERANT CHARGING METHOD FOR REFRIGERATION DEVICE HAVING CARBON DIOXIDE AS REFRIGERANT - A refrigerant charging method includes installing, cooling, confirming, and moving steps. In the installing step, a refrigeration device is installed on site. In the cooling step, a container is cooled to 31° C. or below using a cooling medium. In the confirming step, it is confirmed that the container has reached 31° C. or below. In the moving step, the refrigerant is moved to the intended charging space from the container upon confirming that the container has reached 31° C. or below via the cooling step. When moving the refrigerant from the container to the intended charging space, first, refrigerant that is in a gas phase within the container is moved into the intended charging space, whereupon refrigerant that is in a liquid phase within the container is moved into the intended charging space. | 08-29-2013 |
| 20130219929 | USE OF REFRIGERANTS COMPRISING E-1,3,3,3-TETRAFLUOROPROPENE AND AT LEAST ONE TETRAFLUOROETHANE FOR COOLING - Disclosed herein is a method for producing cooling comprising evaporating a liquid refrigerant comprising (a) E-CF | 08-29-2013 |
| 20130233001 | Method of Increasing Efficiency of a Refrigeration System - Operation of a refrigeration system can be improved by adding a novel refrigerant composition comprising a mixture of activated long chain fatty acids with a polar heat transfer fluid. Activation is preferably accomplished by blending a mixture of the oils and the heat transfer fluid in a vessel containing a catalyst. Contemplated improvements can include, among other things, a reduction in power consumption, a reduction in evaporator coil condensation, or a reduction in leakage of operating fluid. | 09-12-2013 |
| 20130247596 | METHOD OF MEASURING THE REFRIGERANT RECOVERED AND A REFRIGERANT RECOVERY AND RECHARGE DEVICE - A method of measuring weight of the refrigerant recovered and a device for refrigerant recovery and recharge device is disclosed. A connection is established between the refrigerant recovery path and refrigerant recharge path. Refrigerant is filled in the refrigerant recovery path and the refrigerant recharge path. Once the refrigerant occupies the all components of the refrigerant recovery and recharge device, weight of the refrigerant storage tank is measured. The weight of the refrigerant storage tank is measured once before the recovery of the refrigerant from the refrigeration equipment and once after recovery of the refrigerant from the refrigeration equipment. Difference in the weights measured before recovery and after recovery is calculated to a get the amount of refrigerant recovered. | 09-26-2013 |
| 20130247597 | COMBINATIONS OF E-1,3,3,3-TETRAFLUOROPROPENE AND AT LEAST ONE TETRAFLUOROETHANE AND THEIR USE FOR HEATING - Disclosed herein is a method for producing heating comprising condensing a vapor working fluid comprising (a) E-CF | 09-26-2013 |
| 20130255284 | REFRIGERANTS CONTAINING (E)-1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE - The invention relates to a composition comprising (E)-1,1,1,4,4,4-hexafluorobat-2-ene as a mixture with at least one hydrocarbon, hydrofinorocarbon or fluoroolefin compound having a boiling point less than or equal to 42° C., and also to the use of this composition as a heat transfer fluid. | 10-03-2013 |
| 20130298578 | REFRIGERANT CONVERSION KIT AND METHOD FOR A REFRIGERANT RECOVERY UNIT - A method for converting a refrigerant recovery unit from use with a first refrigerant to use with a second refrigerant includes the steps of opening, with a controller, solenoids along a refrigerant path to remove residue of the first refrigerant into a holding vessel, operating a vacuum pump, as indicated by the controller, to further remove the residue of the first refrigerant from the refrigerant path, introducing, via the controller, an amount of the second refrigerant into the refrigerant path, determining, with a refrigerant identifier, a purity of the second refrigerant in the refrigerant path. A kit is also provided to convert the refrigerant recovery unit for use with the first refrigerant to the second refrigerant. | 11-14-2013 |
| 20130312434 | METHOD AND APPARATUS FOR RECOVERING THE REFRIGERANT FROM AN AIR CONDITIONING SYSTEM - An apparatus for recovering refrigerant ( | 11-28-2013 |
| 20130340447 | CONVERTIBLE REFRIGERANT RECOVERY, RECYCLE, AND RECHARGE SYSTEM - A convertible refrigerant recovery, recycle, and recharge unit, comprising a control valve array, a vacuum pump, an oil separator, an oil-less compressor, and one or more storage tanks. The vacuum pump and the oil separator are in flow communication with the control valve array, the oil-less compressor is in flow communication with the oil separator, and the storage tanks are in flow communication with said oil-less compressor. The control valve array receives refrigerant from a refrigerant containing device wherein the oil-less compressor draws the refrigerant into said the storage tanks. The unit is compatible with a plurality of refrigerant types without cross-contamination of the refrigerant due to the oil-less compressor and conversion cycle whereby the vacuum pump is activated to remove residual refrigerant from the unit. A refrigerant identifier sensor is in flow communication with the system and can detect contaminants and selectively open and close the storage tanks. | 12-26-2013 |
| 20140033741 | AIR CONDITIONER - An air conditioner is provided. The air conditioner may include a compressor, a condenser, an evaporator, a receiver storing a portion of a refrigerant passing through the condenser, an accumulator receiving refrigerant stored in the receiver and refrigerant passing through the evaporator to separate gas refrigerant from refrigerant introduced therein and supply the gas refrigerant to the compressor, and a bypass line supplying refrigerant from the receiver to the accumulator. The receiver and the accumulator may be integrally formed or provided as separate parts coupled each other. An outlet end of the bypass line may be connected to an upper portion of the accumulator. Such an arrangement may prevent refrigerant from flowing backward from the accumulator into the receiver. | 02-06-2014 |
| 20140033742 | SERVICE DEVICE FOR VEHICLE AIR CONDITIONING SYSTEMS, AND METHOD FOR OPERATING SAME, IN PARTICULAR FOR THE SELF-CLEANING TYPE - A servicing device and method for operating a servicing device for vehicle air-conditioning systems in particular for the self-cleaning thereof, the servicing device is equipped with an emptying device and a filling device for the drawing off of the refrigerant/compressor oil mixture from the refrigerant circuit system of a vehicle air-conditioning system and for the refilling of the vehicle air-conditioning system with refrigerant and compressor oil. A vacuum pump is used for the residual emptying of the refrigerant circuit system of the vehicle air-conditioning system and/or of the servicing device. An at least partially evacuated flushing agent tank is connected directly or indirectly via a connecting line with at least one of the high pressure servicing connection connectors of the servicing device and/or the subsequent pressure hoses and/or the switchover valve block and that a fluidic further connection takes place to the refrigerant reservoir which is under increased refrigerant pressure. | 02-06-2014 |
| 20140060090 | Method of servicing an aircraft cooling system and aircraft cooling system - A method of servicing an aircraft cooling system comprises connecting a refilling container containing a two-phase refrigerant to a refrigerant connection provided in a cooling circuit of the cooling system, supplying refrigerant from the refilling container into the cooling circuit of the cooling system, and operating a condenser disposed in the cooling circuit so as to liquefy gaseous refrigerant flowing through the cooling circuit. | 03-06-2014 |
| 20140060091 | Method of servicing an aircraft cooling system and aircraft cooling system - A method of servicing an aircraft cooling system comprises connecting a refilling container containing a two-phase refrigerant to a refrigerant connection provided in a cooling circuit of the cooling system, supplying refrigerant from the refilling container into the cooling circuit of the cooling system, and operating a condenser disposed in the cooling circuit so as to liquefy gaseous refrigerant flowing through the cooling circuit. | 03-06-2014 |
| 20140075969 | HEAT-TRANSFER COMPOSITIONS EXHIBITING IMPROVED MISCIBILITY WITH THE LUBRICATING OIL - The invention relates to the use of 1,1,1,2-tetrafluoroethane for increasing the miscibility of 2,3,3,3-tetrafluoropropene with a lubricating oil, and in particular with a polyalkylene glycol oil. In this regard, the invention provides heat-transfer compositions and also equipment and processes using these compositions. | 03-20-2014 |
| 20140137578 | LOW GWP HEAT TRANSFER COMPOSITIONS - The present invention relates, in part, to heat transfer and refrigerant compositions and methods that include HFC-32; HFO-1234ze and HFC-125. | 05-22-2014 |
| 20140137579 | Refrigerant Recovery and Recharge Device - A refrigerant recovery and recharge device and a method to recharge oil to refrigeration equipment is disclosed. The refrigerant recovery and recharge device comprises a valve block which is adapted to establish fluid communication between the device and refrigeration equipment and a recharge path adapted to recharge oil to the refrigeration equipment through an outlet in the valve block. The device further comprises at least a first oil container and a second oil container and the valve block comprises a valve with a first inlet and a second inlet. The first oil container is in fluid communication with the first inlet and the second oil container is in fluid communication with the second inlet to recharge oil to the refrigeration equipment. The method for recharging oil recharges oil either from the first oil container or the second oil container in dependence of the type of fuel used in the vehicle. | 05-22-2014 |
| 20140165625 | COMPOSITIONS AND METHODS FOR INJECTION OF SEALANTS AND/OR DRYING AGENTS INTO AIR CONDITIONING AND REFRIGERATION SYSTEMS - A method for maintaining a charged and pressurized air conditioning or refrigeration system, such method including introducing into the system fluid of the air conditioning or refrigeration system a hydrolytic drying agent, and distributing the hydrolytic drying agent throughout the system fluid; methods of maintaining a charged and pressurized air conditioning or refrigeration system including introducing a hydrolytic drying agent and a sealing agent; devices for maintaining a charged and pressurized air conditioning or refrigeration system which include a sealed vessel containing a hydrolytic drying agent and a sealant; kits for the same. | 06-19-2014 |
| 20140174110 | USE OF R-1233 IN LIQUID CHILLERS - This invention relates to the use of chloro-trifluoropropenes as refrigerants in negative-pressure liquid chillers and methods of replacing an existing refrigerant in a chiller with chloro-trifluoropropenes. The chloro-trifluoropropenes, particularly 1-chloro-3,3,3-trifluoropropene, have high efficiency and unexpectedly high capacity in liquid chiller applications and are useful as more environmentally sustainable refrigerants for such applications, including the replacement of R-123 and R-11. | 06-26-2014 |
| 20140174111 | BACKGROUND TANK FILL BASED ON REFRIGERANT COMPOSITION - A portable recovery unit for automatically filling a background tank of blended refrigerant includes a main tank for holding recovered refrigerant from a vehicle A/C system which has a first chemical composition, and an auxiliary tank for holding an auxiliary supply of fresh refrigerant which has a second refrigerant composition. The auxiliary tank is arranged in fluid communication with the main tank so that fluid can be transferred from the auxiliary tank to the main tank. An electronic controller controls the flow of fluid from the auxiliary tank to the main tank. A refrigerant identifier is coupled to the main tank to sample and analyze the refrigerant in the main tank in order to determine the chemical composition of the refrigerant in the main tank, so the refrigerant in the main tank can be purified to an acceptable level based on that analysis. | 06-26-2014 |
| 20140196480 | VEHICLE AIR-CONDITIONING APPARATUS UPDATING METHOD AND VEHICLE AIR-CONDITIONING APPARATUS - A first air-conditioning apparatus disposed in a frame mounted on a vehicle is updated to a second air-conditioning apparatus is disposed in the frame. A compressor, an outdoor heat exchanger, pressure reducing means, and an indoor heat exchanger of the first air-conditioning apparatus are removed from the frame. The second air-conditioning apparatus is assembled such that a compressor, an outdoor heat exchanger, pressure reducing means, and an indoor heat exchanger are arranged at predetermined positions in the frame, and the second air-conditioning apparatus is charged with HFC refrigerant. An inverter driving the compressor controls the compressor on the basis of a measured value of at least one of a pressure sensor and an outside air temperature sensor arranged on a discharge side of the compressor such that the amount of refrigerant circulating in the second air-conditioning apparatus is larger than that in the first air-conditioning apparatus. | 07-17-2014 |
| 20140202182 | COMPOSITIONS CONTAINING FLUORINE SUBSTITUTED OLEFINS AND METHODS AND SYSTEMS USING SAME - Disclosed are the use of fluorine substituted olefins, including tetra- and penta-fluoropropenes, in a variety of applications, including in methods of depositing catalyst on a solid support, methods of sterilizing articles, cleaning methods and compositions, methods of applying medicaments, fire extinguishing/suppression compositions and methods, flavor formulations, fragrance formulations and inflating agents. | 07-24-2014 |
| 20140216073 | Method Of Charging A Coolant - To ensure precise charging of a coolant into a cooling system ( | 08-07-2014 |
| 20140216074 | COMPOSITIONS COMPRISING TETRAFLUOROPROPENE AND METHODS OF USE THEREOF - The present invention relates to a composition comprising HFO-1234yf, or trans-HFO-1234ze, or a mixture thereof; HFC-32; and HFC-152a, HFO-1243zf, or a mixture thereof, wherein said composition is selected from the group consisting of:
| 08-07-2014 |
| 20140216075 | COMPOSITIONS CONTAINING FLUORINE SUBSTITUTED OLEFINS AND METHODS AND SYSTEMS USING SAME - Disclosed are the use of fluorine substituted olefins, including tetra- and penta-fluoropropenes, in a variety of applications, including in methods of depositing catalyst on a solid support, methods of sterilizing articles, cleaning methods and compositions, methods of applying medicaments, fire extinguishing/suppression compositions and methods, flavor formulations, fragrance formulations and inflating agents. | 08-07-2014 |
| 20140216076 | REFRIGERANT CHARGING METHOD FOR AIR-CONDITIONING APPARATUS AND AIR-CONDITIONING APPARATUS - When a first temperature difference is the difference between a saturated gas temperature of a first refrigerant at an inlet side and a saturated liquid temperature of the first refrigerant at an outlet side in a heat exchanger for heating, and when a second temperature difference is the difference between a saturated gas temperature of a second refrigerant at an outlet side and a temperature of the second refrigerant at an inlet side in the heat exchanger for heating, the difference between the first temperature difference and the second temperature difference is held in a predetermined value or less by charging the second refrigerant to the second refrigeration cycle so that a plurality of single refrigerants forming the second refrigerant have a predetermined mixing ratio. | 08-07-2014 |
| 20140230465 | METHOD FOR SELECTING LUBRICANTS FOR HEAT PUMPS - Provided is a method for selecting a lubricant and a refrigerant for use in a vapor-compression refrigeration device such that the combination of the lubricant and refrigerant produces a fluid system having a lubricant-rich phase and a refrigerant-rich phase, yet exhibits miscible-type properties. | 08-21-2014 |
| 20140260350 | REFRIGERANT RECOVERY DEVICE AND METHOD - A refrigerant recovery unit includes a refrigerant storage unit, a refrigerant circuit, a processor, and a memory. The refrigerant storage unit is configured to store a refrigerant. The refrigerant circuit is in fluid connection with refrigeration system. The refrigerant circuit is configured to recover refrigerant from the refrigeration system and recharge the refrigeration system with the refrigerant. The processor is configured to control the refrigerant recovery unit and the processor is configured to control a fan. The fan is configured to provide a flow of air to the refrigeration system. The memory is to store diagnostic software and operating software to operate the refrigerant recovery unit. | 09-18-2014 |
| 20140260351 | METHOD AND APPARATUS FOR IMPROVING THE CHARGE ACCURACY OF A REFRIGERANT RECOVERY UNIT - A refrigerant recovery unit with improved charging accuracy is provided. In some embodiments, the contamination of charging refrigerant can be prevented while also providing greater refrigerant flow control. In addition, methods associated therewith for servicing refrigerant containing refrigeration systems are provided. In some aspects, the methods include steps that can be used to achieve more accurate assessments of the refrigerant that is charged into the refrigeration systems during servicing. | 09-18-2014 |
| 20140260352 | TEMPERATURE CONTROLLED SERVICE HOSES FOR IMPROVED REFRIGERANT CHARGE ACCURACY - A method and charging apparatus for adding refrigerant to refrigerant system are provided. The disclosure includes thermally conditioning the interior of the service hoses of a refrigerant recovery unit used to charge refrigerant. The conditioning may be based on one or more temperature reading(s) and/or based on a function and may be achieved by a heater along the length of the hose, recirculating refrigerant, and/or through a parallel line of heated liquid. | 09-18-2014 |
| 20140260353 | Modified Hose Flush Device and Method - A refrigerant recovery system includes a refrigerant storage unit, a refrigerant charge path, a flushing path, a processor, and a memory. The refrigerant storage unit is configured to store a refrigerant. The refrigerant charge path is configured to convey the refrigerant to a refrigeration system to recharge the refrigeration system with the refrigerant. The refrigerant charge path includes a first and second service coupler and a first and second service hose. The service hoses are in fluid communication with the respective service couplers. The flushing path is configured to receive a flow of refrigerant for flushing the refrigeration charge path. The flushing path includes a first and second flushing coupler. The processor is configured to control the refrigerant recovery system to provide a flow of the refrigerant from the storage unit, through the refrigerant charge path, and to the flushing path. | 09-18-2014 |
| 20140260354 | Refrigerant Service Hose Check Valve Device and Method - A service hose includes a service coupler and a check valve assembly. The service coupler is configured to fluidly connect the service hose to a refrigeration system. The check valve assembly is disposed proximal to the service coupler and includes a recovery and a recharge flow path. The recovery flow path is defined by a flow of a refrigerant from the refrigeration system and flows along a first bore disposed in a body having a recovery poppet. The recharge flow path is defined by a flow of the refrigerant to the refrigeration system and flows along a second bore disposed in the body, a recharge poppet, and a biasing member. The check valve assembly is configured to provide a substantially free flow of refrigerant along the recovery flow path and also configured to provide a predetermined cracking pressure in response to the refrigerant being urged to flow along the recharge flow path. | 09-18-2014 |
| 20140283537 | COMPOSITIONS COMPRISING A FLUOROOLEFIN - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents. | 09-25-2014 |
| 20140331697 | REFRIGERANT MIXTURES COMPRISING TETRAFLUOROPROPENE, DIFLUOROMETHANE, PENTAFLUOROETHANE, AND TETRAFLUOROETHANE, AND USES THEREOF - A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and/or R-22, and in refrigeration apparatuses. | 11-13-2014 |
| 20140360209 | Compositions and Use of Vinylidene Fluoride and Blends Thereof - The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane. Further, the compositions can be azeotropic or azeotrope-like. | 12-11-2014 |
| 20140373559 | REFRIGERATION APPARATUS AND METHOD FOR DETECTING WHETHER DIFFERENT REFRIGERANT HAS BEEN CHARGED INTO THE SAME - A method for detecting whether a different refrigerant has been charged into a refrigeration apparatus including a refrigerant circuit includes: a charging step of charging a refrigerant into the refrigerant circuit; a characteristics determination step of determining whether saturation temperature characteristics of the refrigerant charged in the charging step are identical to saturation temperature characteristics of a previously determined normal refrigerant, the saturation temperature characteristics of the refrigerant being derived from a pressure and a temperature of the refrigerant; and an alerting step of, when, in the characteristics determination step, a determination is made that the saturation temperature characteristics of the charged refrigerant are different from those of the normal refrigerant, issuing an alarm indicating that the charged refrigerant is different from the normal refrigerant. | 12-25-2014 |
| 20150007591 | Method For Detection Of Loss Of Refrigerant - A method is provided for detecting in real-time a refrigerant charge loss in a refrigerant vapor compression system. If both a sensed evaporator outlet superheat exceeds a target evaporator outlet superheat by at least a preset amount of superheat and a sensed degree of openness of an electronic expansion valve exceeds a preset degree of openness for a preset time of period, and a sensed air temperature of either a flow of supply air having traversed the evaporator or a flow of return air returning to the evaporator is changing at a rate less than preset air temperature rate of change, a service alarm is generated indicating a loss of charge warning. | 01-08-2015 |
| 20150007592 | COMPOSITIONS COMPRISING 2,3,3,3-TETRAFLUOROPROPENE AND HYDROCARBONS AND USES THEREOF - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises 2,3,3,3-tetrafluoropropene (HFC-1234yf) and at least one hydrocarbon. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, and aerosol propellants. | 01-08-2015 |
| 20150033770 | REFRIGERANT MIXTURES COMPRISING TETRAFLUOROPROPENE, DIFLUOROMETHANE, PENTAFLUOROETHANE, AND TETRAFLUOROETHANE AND USES THEREOF - A nonflammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture consists essentially of (a) from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125 (d) from 25.5 weight percent to 30 weight percent HFC-134a, and (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g. lubricants), in processes to produce cooling, in methods for replacing refrigerant R-404A or R-507, and in refrigeration apparatus. | 02-05-2015 |
| 20150040588 | REFRIGERATION CHARGING DEVICES AND METHODS OF USE THEREOF - Servicing devices and methods of use for servicing refrigerant systems are described herein. A servicing device may include a body and actuator. The body includes a first fluid port that is coupleable to a fluid port of a fluid source; a second fluid port, that is operatively couples to a refrigeration system; a passage in fluid communication with the first and second fluid ports and in fluid communication; and a plunger at least partially disposed in the passage of the body, and the plunger is adjustable between a released position and an engaged position, during use. The actuator is coupled to the body, and, during use, downward movement the actuator raises or lowers a plunger such that substantially continuous fluid communication between the first fluid port and the second fluid port is established. | 02-12-2015 |
| 20150059367 | ACTIVE CHARGE CONTROL METHODS FOR VAPOR CYCLE REFRIGERATION OR HEAT PUMP SYSTEMS - Vapor compression systems are supplemented with a charge control loop that includes a discharge control valve, a transfer pump, and a mass storage vessel configured to add or remove refrigerant to or from the refrigeration loop during operation to optimize efficiency according to variations in thermal load. Methods for operating the vapor control systems include adjusting the refrigerant charge in the refrigeration loop by activating the discharge control valve to remove refrigerant or by activating the transfer pump to add refrigerant, thereby maintaining optimal pressure and temperature conditions in the refrigeration loop over large variations in environmental temperatures. Refrigerant removed from the refrigeration loop through the discharge control valve may be held in the mass storage vessel until subsequently being added back into the refrigeration loop by the transfer pump. | 03-05-2015 |
| 20150068225 | System and Method for Controlling Temperature and Humidity in Multiple Spaces using Liquid Desiccant - A branch controller operates with a system for temperature and humidity control. The branch controller includes a fluid control system for controlling a flow of the liquid desiccant in an arrangement of channels forming a first path for exchanging the liquid desiccant between a liquid desiccant conditioning unit and at least a first space conditioning unit and a second path for directing the liquid desiccant received from the first space conditioning unit to a second space conditioning unit. The branch controller includes a processor for comparing operational conditions of the first space conditioning unit and the second space conditioning unit. The processor selects between the first path and the second path based on the comparison and commands the fluid control system to control the flow of the liquid desiccant according to the selected path. | 03-12-2015 |
| 20150089965 | HEAT TRANSFER COMPOSITIONS AND METHODS - Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) from about 10% to about 35% by weight of HFC-32; (b) from about 10% to about 35% by weight of HFC-125; (c) from about 20% to about 50% by weight of HFO-1234ze, HFO-1234yf and combinations of these; (d) from about 15% to about 35% by weight of HFC-134a; and optionally (e) up to about 10% by weight of CF3I and up to about 5% by weight of HFCO-1233ze, with the weight percent being based on the total of the components (a)-(e) in the composition | 04-02-2015 |
| 20150107277 | Apparatus And Methods for Temporarily Holding the Evaporator/Fan Unit of a Ductless Mini-Split HVAC System Proximate to a Wall - A portable and reusable installation platform for easing the installation or maintenance of an air conditioner on a vertical wall includes at least one support base upon which at least part of the air conditioner is positioned during the installation or maintenance thereof. At least one connector extends from the first end of the support base and is configured to releasably engage the wall. At least one support leg extends downwardly from the support base and is configured to abut the wall to support the weight of the air conditioner placed upon the support base. | 04-23-2015 |
| 20150121910 | LOW GWP HEAT TRANSFER COMPOSITIONS - The present invention relates, in part, to heat transfer and refrigerant compositions and methods that include HFC-32; HFO-1234ze and HFC-125. | 05-07-2015 |
| 20150121911 | COMPOSITIONS COMPRISING Z-1,2-DIFLUOROETHYLENE AND USES THEREOF - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises Z-1,2-difluoroethylene (Z-HFO-1132a). The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids. | 05-07-2015 |
| 20150128621 | SYSTEMS AND METHODS FOR CHANGING COOLANT IN A LINEAR ACCELERATOR - Systems and methods for replacing coolant of an x-ray tube assembly having a closed cooling system include a service port that is operatively connected to a portion of the x-ray tube assembly and a vacuum assisted service kit that is operatively coupled to the service port. Used coolant is drained from the x-ray tube assembly, and thereafter a vacuum is drawn on the x-ray tube assembly via the service kit. Replacement coolant within a vacuum tank of the service kit is degassed under a vacuum. The degassed replacement coolant is provided into the cooling system from the vacuum tank, preferably by pushing under pressure with an inert gas to prevent the introduction of any air into the replacement coolant. The replacement coolant may be pressurized in the cooling system with the inert gas. Thereafter, the service kit may be disconnected from the service port. | 05-14-2015 |
| 20150316301 | METHOD AND SYSTEM FOR CHARGING A TRANSPORT REFRIGERATION SYSTEM - A method for charging a phase change material (PCM) of a thermal accumulator provided in a refrigerated transport unit is provided. The refrigerated transport unit includes a prime mover to move the refrigerated transport unit, a transport refrigeration system (TRS) that includes a heat transfer fluid circuit. The heat transfer fluid circuit has a compressor, a heat exchanger, an expansion device and a PCM heat exchanger. The method requires monitoring for, via a controller, a braking signal from a braking sensor of the refrigerated transport unit. Also, the method includes directing energy generated by the prime mover for moving the refrigerated transport unit to the TRS when the controller receives a braking signal from the braking sensor. Further, the method includes the TRS charging the PCM of the thermal accumulator via the heat transfer fluid circuit when the energy generated by the prime mover is directed to the TRS. | 11-05-2015 |
| 20150320899 | VEHICLE AIR FRESHENING SYSTEM - A vehicle air freshening system comprising a canister of Freon; a scent within the canister of Freon; a detachable charging gun attached to a top portion of the canister of Freon; a handle positioned on the detachable charging gun, where the handle activates dispensing the Freon and scent into a vehicle's air conditioner; and a hose attached to the detachable charging gun, where the hose is attached with a connector to the charging gun, and where the hose dispenses the Freon and scent into the vehicle air conditioner. The scent is distributed throughout the vehicle when the air conditioner blows cool air into the cabin. | 11-12-2015 |
| 20150322320 | HYDROCARBON BASED REFRIGERANT - An environmentally friendly hydrocarbon refrigerant mixture may be used as a substitute for existing refrigerant in a refrigerant system. The hydrocarbon refrigerant mixture offers greater operating efficiency and effectively replaces chlorofluorocarbon refrigerants. The refrigerant mixture for the refrigeration system includes from about 85% to about 89% by weight propane and from about 11% to about 15% by weight propene. | 11-12-2015 |
| 20150323233 | Device and Method for Maintaining an Air Conditioner - A device for maintaining an air conditioner, in particular, for air conditioners using CO | 11-12-2015 |
| 20150338141 | Tandem Compressor Slide Rail - A system and method are disclosed for compressor units in HVAC systems. A slide plate and slide rail assembly is described that can allow compressors to be slidably removed or adjusted to allow for easy repair or servicing. Instead of disassembling an entire compressor unit when repairs are needed on it or on neighboring components, the compressor unit can be quickly moved. Dual slide rail and slide plate configurations are described as well. | 11-26-2015 |
| 20150345845 | CONSTRUCTION METHOD FOR AIR CONDITIONING DEVICE - An air conditioner includes an outdoor unit, an indoor unit, and a refrigerant circuit. A method for installing the air conditioner includes: a planning step of determining factory-assembled parts and site-assembled parts of the refrigerant circuit based on a construction drawing of a building; a part fabrication step of fabricating, in a factory, a plurality of parts of the refrigerant circuit corresponding to the factory-assembled parts determined in the planning step; and an installation step of installing and connecting in the building the plurality of parts fabricated in the part fabrication step and a plurality of devices of the refrigerant circuit corresponding to the site-assembled parts determined in the planning step. The present invention allows for reducing the number of days required for the installation, cutting down the risk of fire accidents, and suppressing the occurrence of moisture condensation. | 12-03-2015 |
| 20150353800 | REFRIGERANT ADDITIVES AND COMPOSITIONS - Embodiments are described herein to provide refrigerant and/or refrigerant composition that is suitable for providing lubrication to, for example, moving parts of a chiller system. Embodiments are also described herein to provide an additive, such as a corrosion inhibitor and/or stabilizers, that can be added to the refrigerant to form refrigerant compositions that is suitable for providing lubrication to, for example, moving parts of a chiller system. | 12-10-2015 |
| 20150354713 | Five-Way Heat Pump Reversing Valve - Systems and methods are disclosed which may include providing a five-way reversing valve in a heat pump HVAC system, wherein the five-way reversing valve comprises a selectively movable shuttle, a first high pressure inlet port, a second high pressure inlet port, a first variable port, a first outlet port, and a second variable port, and wherein the five-way reversible valve is configured to selectively alter a flowpath of refrigerant through the reversing valve between a first operational position associated with a cooling mode and a second operational position associated with a heating mode. The five-way reversing valve may also be configured to remove a component from the refrigerant fluid circuit when configured for operation in one of its two modes of operation. | 12-10-2015 |
| 20150369533 | CARBON DIOXIDE CHARGING APPARATUS AND METHOD FOR HEAT EXCHANGE UNIT - Apparatus and process to adsorb carbon dioxide onto compacted activated carbon in a HEU while removing the heat generated by the adsorption. A cooling tunnel is provided and maintained at approximately five degrees Celsius by continuously flowing a refrigerant therethrough. A plurality of completed cans with HEU are arranged internally and gassing heads are attached to each HEU and maintained at approximately 10-15 Bar for a period of twenty to thirty minutes after which the gassing heads would be removed and a new batch of cans inserted. | 12-24-2015 |
| 20150377532 | Active Refrigerant Charge Compensation for Refrigeration and Air Conditioning Systems - A variable refrigerant charge refrigeration/air conditioner system is described that allows the refrigerant charge for the system to be altered based on operating or environmental factors. The system includes a main refrigerant loop holding a volume of refrigerant corresponding to a first level of refrigerant charge, a compressor in the main refrigerant loop, a condenser in the main refrigerant loop, and an evaporator in the main refrigerant loop. A branch refrigerant loop allows the alteration of the refrigerant charge using a control valve in the branch refrigerant loop and a receiver in the branch refrigerant loop. The receiver acts to hold a volume of refrigerant when the control valve is open, thereby removing the volume of refrigerant from the main refrigerant loop. A return path from the receiver to the main refrigerant loop allows refrigerant to flow back into the main loop from the receiver. | 12-31-2015 |
| 20150377533 | SYSTEM AND METHOD FOR RETROFITTING A REFRIGERATION SYSTEM FROM HCFC TO HFC REFRIGERANT - A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture. The polyol ester lubricant may be present in a range exceeding about 5-15% by weight, e.g., 8%. | 12-31-2015 |
| 20160002519 | Heat Transfer Compositions - The invention provides a heat transfer composition comprising:
| 01-07-2016 |
| 20160024362 | COMPOSITIONS AND METHOD FOR REFRIGERATION - The present invention relates, in part, to heat transfer systems, methods and compositions which utilize a heat transfer fluid comprising: (a) HFO-1234ze; (b) HFC-227ea; and (c) optionally HFC-134a, wherein HFO-1234ze and HFC-227ea are provided in effective amounts to form an azeotrope or azeotrope-like composition. | 01-28-2016 |
| 20160025394 | HEAT TRANSFER FLUID - Compositions which are based on tetrafluoropropene and more particularly relates to compositions including 60% to 90% by weight of 2,3,3,3-tetrafluoropropene and 10% to 40% by weight of at least one compound selected from difluoroethane and difluoromethane, which can be used as a heat transfer fluid. The compositions may include 60% to 79% by weight of 2,3,3,3-tetrafluoropropene and 21% to 40% by weight of a compound selected from difluoroethane and difluoromethane. | 01-28-2016 |
| 20160025395 | SYSTEM AND METHOD FOR RETROFITTING A REFRIGERATION SYSTEM FROM HCFC TO HFC REFRIGERANT - A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture. The polyol ester lubricant may be present in a range exceeding about 5-15% by weight, e.g., 8%. | 01-28-2016 |
| 20160032164 | COMPOSITIONS COMPRISING FLUOROOLEFINS AND USES THEREOF - The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential. | 02-04-2016 |
| 20160039269 | Portable Air Cooling System and Method - A portable air cooling system and method for providing cooled air for mobile use for a user including in a golf cart has an insulated portable casing, an air cooling assembly, a primary air blower fan, a secondary air blower fan, a computer control unit, switches including variable resistance switches, a portable power source including batteries and solar panels, and a secondary casing for housing the portable power source. | 02-11-2016 |
| 20160047560 | EASY MAINTENANCE ACCESS SYSTEM FOR INSULATED COOLER UNIT - An insulated cooler unit that produces cooled air is disclosed. The cooler unit includes, within a thermally-insulated housing chamber, an inlet for introducing air to be cooled, an outlet for exiting of cooled air, an air heat exchanger for cooling air, a first fan. The cooler unit additionally includes a first track member having a first channel member, at least one first sliding member configured to slide within the first channel member. The first fan is connected to the first sliding member and is slidably mounted in the first track member by the at least one first sliding member, and is capable of being slidably moved over a portion of a first length of the first track member. | 02-18-2016 |
| 20160068731 | METHODS AND APPARATUS USING REFRIGERANT COMPOSITIONS COMPRISING REFRIGERANT AND LUBRICANT COMPRISING PERFLUOROPOLYETHER AND NON-FLUORINATED LUBRICANT - Disclosed herein is a method to improve miscibility in refrigeration, air conditioning, heat pump or power cycle systems comprising charging a refrigeration, air conditioning or heat pump system with a refrigerant composition; wherein the refrigerant composition comprises at least one refrigerant and a lubricant comprising at least one perfluoropolyether and at least one non-fluorinated lubricant, provided that the refrigerant composition has no more than two liquid phases over the range of the composition and over a range of temperature from about −40° C. to about +60° C. Also disclosed is a refrigeration, air conditioning, heat pump, or power cycle system containing said refrigerant composition. | 03-10-2016 |
| 20160069575 | NATATORIUM DEHUMIDIFIER - The present invention provides improved dehumidification and/or air conditioning systems, and associated methods and equipment, for example for use in a natatorium housing a swimming pool, or other buildings which may enclose sources of humidity or otherwise resulting in a need for air treatment. | 03-10-2016 |
| 20160123641 | System and Method for Venting Refrigerant from an Air Conditioning System - An air conditioning service system includes an inlet port configured to connect to an air conditioning system to receive refrigerant, a discharge circuit, a pressure transducer, and a controller. The discharge circuit includes a plurality of discharge lines arranged in parallel with one another, each of the plurality of discharge lines fluidly connecting the inlet port to the atmosphere through an associated orifice to vent the refrigerant to atmosphere, and a plurality of discharge valves, each of which is configured to open and close an associated one of the plurality of discharge lines. The controller is configured to obtain the pressure at the inlet port and determine a theoretical mass flow rate through each of the plurality of discharge lines based upon the pressure and the cross-sectional area of the associated orifice, and to operate selected ones of the discharge valves based upon the determined theoretical mass flow rates. | 05-05-2016 |
| 20160123642 | System and Method for Venting Refrigerant from an Air Conditioning System - An air conditioning service system includes a discharge unit including a discharge vessel, a vacuum pump fluidly connected to the discharge vessel, a scale configured to sense a weight of the discharge unit, a first valve arranged in an input line configured to fluidly connect the discharge vessel to an air conditioning system, and a vent valve arranged in a vent line and configured to fluidly connect the discharge vessel to the atmosphere. A controller operates the vacuum pump to evacuate the discharge vessel, obtains an evacuated weight of the discharge unit, operates the first valve to open to fill the discharge vessel with refrigerant, obtains a filled weight of the discharge unit, operates the vent valve to vent refrigerant from the discharge vessel, obtains a vented weight of the discharge unit, and determines a mass of refrigerant vented based upon the stored evacuated, filled, and vented weights. | 05-05-2016 |
| 20160130490 | REFRIGERANT COMPOSITIONS AND METHODS OF USE - Compositions and methods are described for reducing flammability in a heating, ventilation, and air conditioning (HVAC) system having R32 refrigerant included in the refrigerant composition. Refrigerant compositions and methods of use are described which can be used for retrofitting, servicing, controlling flammability, improving performance, lubricant solubility and miscibility, and improving the safety of an HVAC system. | 05-12-2016 |
| 20160137898 | COMPOSITIONS COMPRISING A FLUOROOLEFIN - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents. | 05-19-2016 |
| 20160138843 | System and Method for Charging Refrigerant into a Refrigeration Circuit - An air conditioning service system includes a refrigerant storage vessel, a charging subsystem fluidly connected to the refrigerant storage vessel and configured to connect to a refrigeration circuit to transfer refrigerant from the refrigerant storage vessel to the refrigeration circuit, a first pressure transducer configured to sense a first pressure in the refrigerant storage vessel, a first valve configured to control a flow of ambient air between the refrigerant storage vessel and the atmosphere, and a controller operably connected to the first pressure transducer and the first valve. The controller includes a memory and a processor configured to execute program instructions stored in the memory to operate the first valve to admit air into the refrigerant storage vessel based on the sensed first pressure, and to operate the charging subsystem to fluidly connect the refrigerant storage vessel to the refrigeration circuit. | 05-19-2016 |
| 20160146481 | Cool Air Loop Method - A system and method for cooling structures by pulling air underground through corrugated pipe is disclosed. The system allows the air to cool down prior to being pulled back into the structure. The system comprises: a trench located outside the structure; an elongated pipe resting in the trench, having a first end and a second end; a first manifold connected to the first end of the elongated pipe, and a second manifold connected to the second end of the elongated pipe; a first airtight duct connecting the first manifold to the structure, and a second airtight duct connecting the second manifold to the structure; a duct fan coupled to the second set of ducting such that the duct fan causes air to flow through the first airtight duct to the first manifold, then to the elongated pipe, then through the second manifold, then through the second airtight duct back into the structure, thereby cooling the structure due to a naturally cooler temperature of the elongated pipe located in the trench. | 05-26-2016 |
| 20160169568 | REFRIGERANT LEVEL MONITOR FOR REFRIGERATION SYSTEM | 06-16-2016 |
| 20160169569 | Method and System for Measuring Volume of Fluid Drained from an Air Conditioning Service Unit | 06-16-2016 |
| 20160194541 | HEAT-TRANSFER COMPOSITIONS EXHIBITING IMPROVED MISCIBILITY WITH THE LUBRICATING OIL | 07-07-2016 |
| 20160195321 | COMPOSITIONS COMPRISING 1,1-DIFLOUROETHENE (R-1132A) | 07-07-2016 |
| 20160252283 | TERNARY HEAT-TRANSFER FLUIDS COMPRISING DIFLUOROMETHANE, PENTAFLUOROETHANE AND TETRAFLUOROPROPENE | 09-01-2016 |
| 20160376484 | 2,3,3,3-TETRAFLUOROPROPENE COMPOSITIONS HAVING IMPROVED MISCIBILITY - The use of an alcoholic compound to improve the miscibility of ammonia with 2,3,3,3-tetrafluoropropene, as well as to compositions of ammonia, 2,3,3,3-tetrafluoropropene and an alcoholic compound, and the use thereof, in particular in heat-transfer applications. A composition including 2,3,3,3-tetrafluoropropene, ammonia and an alcoholic compound having a melting point less than or equal to 0° C. | 12-29-2016 |
