Class / Patent application number | Description | Number of patent applications / Date published |
062118000 | Pumping fluid in closed circuit | 26 |
20080276631 | System and Method for Cooling a Battery - A system is provided for cooling an energy storage system of a hybrid electric vehicle. The energy storage system includes at least one energy storage device. The system includes at least one inner casing configured to encapsulate at least one inner core of at least one respective energy storage device of the energy storage system. Additionally, the system includes at least one outer layer configured to surround the at least one inner casing. The system further includes an inner space positioned between the at least one inner casing and the at least one outer layer, where the inner space is configured to receive cooling fluid through at least one inlet in the outer layer. | 11-13-2008 |
20080276632 | System and Method for Cooling a Battery - A system is provided for cooling an energy storage system of a hybrid electric vehicle. The energy storage system includes at least one energy storage device, including a maximum temperature storage device with a maximum temperature and a minimum temperature storage device with a minimum temperature. The system includes a cooling fluid duct in flow communication with an inlet and the at least one energy storage device, and a blower positioned within the cooling fluid duct to draw cooling fluid into the inlet and through the cooling fluid duct. The system further includes a controller coupled with the at least one energy storage device to increase the temperature of the at least one energy storage device having a temperature below the maximum temperature reduced by at least a predetermined threshold. The cooling fluid duct and blower are coupled to form a common cooling system for the at least one energy storage system. | 11-13-2008 |
20090013702 | REFRIGERANT CHARGE CONTROL IN A HEAT PUMP SYSTEM WITH WATER HEATER - A heat pump system includes a compressor, a reversing valve, an outdoor heat exchanger and an indoor heat exchanger in a circuit, and a refrigerant-to-water heat exchanger. In the air cooling with water heating mode, the air heating with water heating mode and the water heating only mode, water from a water reservoir is passed through refrigerant-to-water heat exchanger. A refrigerant reservoir may be provided for use in refrigerant charge control. A refrigerant line ( | 01-15-2009 |
20090019867 | Food chiller - A food cooling assembly is disclosed. The assembly includes a reservoir adapted to retain a fluid. The receptacle includes an opening extending therethrough. The assembly also includes a chiller including a pump having a suction end and a discharge end and a supply conduit having a first supply end releasably couplable to the opening and a second supply end coupled to the suction end of the pump. A cooling conduit having a first cooling end is coupled to the discharge end of the pump and a second cooling end releasably couplable to the opening. A heat transfer device is in physical contact with the cooling conduit between the first cooling end and the second cooling end, such that heat is transferred between the heat transfer device and the cooling conduit. A method of cooling food using water from a reservoir to cool the food is also disclosed. | 01-22-2009 |
20090205346 | Air Conditioning System Having Integrated Chiller and Thermal Storage - An air conditioning system for a vehicle and a method of operation is disclosed. The air conditioning system includes a primary refrigerant loop and a secondary liquid loop. The primary refrigerant loop includes a compressor configured to be selectively driven by the engine, a condenser, an expansion device and a refrigerant-to-liquid heat exchanger. The secondary liquid loop includes the refrigerant-to-liquid heat exchanger, a thermal storage reservoir within which the refrigerant-to-liquid heat exchanger is mounted, a pump configured to pump a liquid through the refrigerant-to-liquid heat exchanger, a liquid-to-air heat exchanger configured to mount in a HVAC module and receive the liquid from the refrigerant-to-liquid heat exchanger, and a liquid flow valve configured to selectively direct the liquid directly to the pump or through the thermal storage reservoir to the pump. | 08-20-2009 |
20090277198 | REFRIGERANT CIRCULATING PUMP, REFRIGERANT CIRCULATING PUMP SYSTEM, METHOD OF PUMPING REFRIGERANT, AND RANKINE CYCLE SYSTEM - A Rankine cycle system has a condenser, a refrigerant circulating pump connected to the condenser, a heat collecting device connected to the refrigerant circulating pump, and an expansion turbine connected to the heat collecting device and the condenser. The refrigerant circulating pump includes an expansion tank or pressure vessel, a refrigerant supply conduit connected to the lower part of the expansion tank and to the condenser, and a refrigerant discharge conduit connected to the upper part of the expansion tank. An open/close valve is installed in the refrigerant supply conduit. A pressure regulating valve installed in the refrigerant discharge pipe opens when a pressure reaches a specified value or higher. A temperature regulating device can heat the refrigerant in the expansion tank to produce a refrigerant vapor of saturated temperature or higher, which vapor can be introduced into the heat collecting device. | 11-12-2009 |
20100050669 | AIR CONDITIONING SYSTEMS AND METHODS HAVING FREE-COOLING PUMP-PROTECTION SEQUENCES - An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump-protection sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at an inlet of the pump, while the second pressure sensor is at an outlet of the pump. The controller selectively operates in the cooling mode by circulating and compressing a refrigerant through the refrigeration circuit via the compressor or operates in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump: The pump-protection sequence turns the pump to an off state based at least upon a differential pressure determined by the controller from pressures detected by the first and second pressure sensors. | 03-04-2010 |
20100071392 | PARALLEL FLOW EVAPORATOR WITH SHAPED MANIFOLDS - A method is provided for mitigating two-phase refrigerant maldistribution in heat exchange channels of a parallel flow evaporator. An inlet manifold of the evaporator includes a first stage, at least one intermediate stage, and a final stage. Each stage includes an expansion chamber, a contraction chamber, and at least one heat exchange channel interconnecting the stage to an outlet manifold of the evaporator. The method includes throttling the two-phase refrigerant in the expansion chamber of each stage, flowing a portion of the throttled refrigerant through the at least one heat exchange channel to the outlet manifold, mixing and jetting the two-phase refrigerant in each contraction chamber to increase the velocity of the refrigerant, and passing the refrigerant out an exit of the outlet manifold. | 03-25-2010 |
20100212338 | Battery pack temperature optimization control system - A method and apparatus for limiting the adverse effects of temperature on the electrical energy storage system (ESS) of an electric vehicle after the vehicle has been turned off are provided. In general, whether or not coolant is circulated through a coolant loop coupled to the ESS depends on the difference between the ambient temperature and a preset temperature, the preset temperature typically corresponding to the temperature of the ESS. | 08-26-2010 |
20110030400 | EVAPORATOR AND COOLING CIRCUIT - An evaporator for a cooling circuit is provided, for cooling at least one heat emitting device by evaporation of a cooling fluid. The evaporator includes a top collector, a bottom collector, and an evaporator body. The evaporator body includes at least one thermoconducting wall that is thermally connectable to the at least one heat emitting device, a plurality of evaporation channels, and a plurality of return channels. | 02-10-2011 |
20110056221 | ACTIVE STRESS CONTROL DURING RAPID SHUT DOWN - A closed loop refrigerant expansion system with a tube and shell condenser is provided with a control which, upon shutdown, causes the flow of refrigerant to reverse from the evaporator to the condenser to thereby both reduce the amount of refrigerant vapor passing to the condenser and increase the amount of liquid refrigerant in the condenser to thereby reduce the maximum temperature load in the condenser. Reverse flow can be made to occur either by reversing the direction of the refrigerant pump or opening a bypass valve around the pump. | 03-10-2011 |
20110192178 | DEVICE FOR CONTROLLING A WORKING FLUID WITH LOW FREEZING POINT CIRCULATING IN A CLOSED CIRCUIT OPERATING ACCORDING TO A RANKINE CYCLE AND METHOD USING SAME - The present invention relates to a device for controlling the working fluid with low freezing point circulating in a closed circuit ( | 08-11-2011 |
20110232307 | LIQUEFIED AIR REFRIGERATION SYSTEM FOR STORAGE CONTAINER - A liquid refrigeration system for a thermally-insulated storage container includes a tank configured to store liquid air therein, a conduit system having a first end portion coupled to the tank and a second end portion configured to be positioned within an interior of the thermally-insulated storage container, a spray head coupled to the second end portion of the conduit system, a control system electrically coupled to the tank and the spray head to control the flow of liquid air from the tank to the spray head. | 09-29-2011 |
20120017617 | CENTRIFUGAL COMPRESSOR COOLING PATH ARRANGEMENT - An example compressor arrangement includes a first compressor portion configured to compress a fluid and a second compressor portion configured to compress the fluid more than the first compressor portion. The compressor arrangement also includes a motor disposed between the first compressor portion and the second compressor portion. The first compressor portion is configured to communicate the fluid to the second compressor portion along a primary flow path. The second compressor portion is configured to divert at least some of the fluid from the primary flow path, communicating the diverted fluid back to the first compressor portion along a secondary flow path. | 01-26-2012 |
20120234027 | Supersonic Cooling Nozzle with Airfoils - A supersonic cooling system, as disclosed herein, operates by pumping liquid. Because the supersonic cooling system pumps liquid, the cooling system does not require the use of a condenser. The cooling system utilizes a compression wave to facilitate a phase change utilized in the cooling effect generated by the system. An evaporator operates in the critical flow regime in which the pressure in one or more evaporator nozzles will remain almost constant and then ‘shock up’ to the ambient pressure. The evaporator may be provided with airfoils to improve characteristics of the fluid flow, thereby increasing efficiency of the system. | 09-20-2012 |
20130047643 | DEMAND FLOW PUMPING - Demand Flow operates chilled water plants at substantially improved efficiency, regardless of plant load conditions. In general, Demand Flow utilizes an operating strategy which controls chilled and condenser water pumping according to a constant Delta T line, which is typically near or at design Delta T. This reduces or eliminates Low Delta T Syndrome and reduces energy usage by chilled and condenser water pumps for given load conditions. Operation of chilled water pumps in this manner creates a synergy which generally balances flow rates throughout the plant, reducing undesirable bypass mixing and energy usage at air handler fans and other components of the chilled water plant. At plant chillers, application of Demand Flow increases the refrigeration effect through refrigerant sub-cooling and superheating, while preventing stacking. Demand Flow includes a critical zone reset feature which allows the constant Delta T line to be reset to adjust to changing load conditions. | 02-28-2013 |
20130180275 | Method for Controlling a Heat-Transfer Fluid-Compression Device of a Cryogenic Machine - Method for controlling a heat-transfer fluid compression device ( | 07-18-2013 |
20140109605 | Pressure Regulation of an Air Conditioner - In various implementations, air conditioners may include a high pressure portion and a low pressure portion. A bypass line may divert a portion of the refrigerant from the high pressure portion to the low pressure portion to reduce the pressure of at least a part of the high pressure portion. The bypass line may be opened automatically. | 04-24-2014 |
20140230470 | Vehicle Idle Time Reduction System and Method - A system for reducing idle time in service vehicles such as police patrol cars. A bank of auxiliary batteries is provided. An electrically-powered auxiliary air conditioning compressor is also provided. The auxiliary air compressor is connected to the discharge and suction lines of an existing an conditioning system so that it can propel refrigerant through an existing refrigerant circulation loop. When the vehicle's internal combustion engine is switched off, the auxiliary batteries are selectively used to power the auxiliary air-conditioning compressor in order to provide cooling for the vehicle's cabin. The auxiliary batteries are also used to provide electricity to the vehicle's other electrical loads—such as emergency lights. | 08-21-2014 |
20140230471 | Compact Cooling System and Method for Accurate Temperature Control - In an integrated two-phase accumulator controlled loop cooling system, the pumped refrigerant is employed to cool the supply of refrigerant in the accumulator vessel. No external cooling of the accumulator vessel is required, and a standard heater in the accumulator is sufficient to regulate the boiling pressure. This allows to provide a cooling system in which sub-cooling in the pump is guaranteed by the laws of nature, and which is hence more reliable, structurally simpler, better to control and cheaper. | 08-21-2014 |
20150013361 | Closed Loop Capacity And Power Management Scheme For Multi Stage Transport Refrigeration System - A unit, such as a transport refrigeration unit | 01-15-2015 |
20150040591 | REFRIGERATOR AND CONTROL METHOD THEREOF - Provided are a refrigerator and a control method thereof. The refrigerator includes a compressor, a condenser, a refrigerant tube guiding a flow of the refrigerant condensed in the condenser, a plurality of expansion devices, a plurality of evaporators including first and second evaporators to evaporate the refrigerant decompressed in the plurality of expansion devices, a plurality of first evaporation passages in which a portion of the plurality of expansion devices is disposed, the plurality of first evaporation passages guiding introduction of the refrigerant into the first evaporator of the plurality of evaporators, a second evaporation passage in which the other portion of the plurality of expansion devices is disposed, the second evaporation passage guiding introduction of the refrigerant into the second evaporator and a flow adjusting unit to branch the refrigerant into the plurality of first evaporation passages and the second evaporation passage. | 02-12-2015 |
20150052919 | CHILLED WATER SYSTEM EFFICIENCY IMPROVEMENT - Method for improving efficiency of a chilled water system having a chiller unit, circulation pumps, a heat absorption unit and a heat rejection unit, including adjusting a temperature of at least one of a chilled water supply to the heat absorption unit and a condenser water supply from the heat rejection unit; measuring efficiency of the chiller unit and at least one of the circulation pumps, the heat absorption unit and the heat rejection unit; further adjusting temperature of at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if the measuring the efficiency indicates an improved efficiency; and further adjusting the temperature of the at least one of the chilled water supply to the heat absorption unit and the condenser water supply from the heat rejection unit if measuring the efficiency indicates worsened efficiency. | 02-26-2015 |
20150135747 | SYSTEM AND METHOD FOR DYNAMIC CONTROL OF AN EVAPORATOR - The invention relates to a plate heat exchanger including a plate package, which includes a number of first and second heat exchanger plates which are joined to each other and arranged side by side in such a way that first and second plate interspaces are formed. At least two injectors are provided, each injector being arranged to supply a first fluid to at least one of the first plate interspaces in the at least one plate package and at least one valve is arranged to control the supply of the first fluid to the at least two injectors. | 05-21-2015 |
20150380783 | METHOD AND DEVICE PROVIDING THE TEMPERATURE REGULATION OF A RECHARGEABLE ELECTRICAL ENERGY STORAGE BATTERY - A thermal control device for at least one rechargeable electrical energy storage battery, in particular for a battery of a vehicle with electric or hybrid drive and comprising at least one electrochemical component. The device comprises at least one enclosure in which the electrochemical component of the battery is housed, at least one magnetocaloric heat pump associated with the enclosure, at least one heat transfer fluid circulating circuit coupled between the battery and the heat pump and at least one heat exchanging component that is open to the exterior environment and connected to the heat transfer fluid circulating circuit to exchange calories with the exterior environment. | 12-31-2015 |
20160023539 | ENERGY RECOVERY IN AIR CONDITIONING AND OTHER ENERGY PRODUCING SYSTEMS - An energy recovery system in a principal cooling system, which includes a canister mountable on a refrigerant line, the refrigerant line producing cold to an exterior of the refrigerant line, the canister comprising a body portion for encasing at least a portion of the refrigerant line with a fluid flow channel through the body of the canister for flowing a refrigerant mixture therethrough, the refrigerant mixture being cooled by the cold produced by refrigerant line, so that when the refrigerant mixture exits the canister, the refrigerant mixture is colder than when it entered the canister and can be circulated to another system that can utilize the cooled refrigerant mixture. In a second embodiment of the system, an enlarged canister encases a portion of a compressor, and a refrigerant mixture flows through the canister to receive heat from the compressor to cool down the compressor. In a third embodiment, an enlarged canister encases the outer wall of a tank, such as a transformer, and a refrigerant mixture flows through the canister to receive heat from the transformer in order to increase the longevity of the transformer. In both the second and third embodiments, the heated fluid would then flow through a heat exchanger, such as a radiator, to cool the fluid before it is returned to the enlarged canister. In additional embodiments, multiple canister devices are utilized to cool water in a water fountain line, and on the high side and low side lines in an air conditioning system. | 01-28-2016 |