| Entries |
| Document | Title | Date |
|---|
| 20080210769 | HEATING SYSTEM, DRYING MACHINE HAVING THE HEATING SYSTEM, AND METHOD OF CONTROLLING THE HEATING SYSTEM - A heating system and a method of controlling the heating system are provided. When a heating unit and a switch are turned on and off repeatedly by the predetermined number of times or more, only some of heaters of the heating unit are turned on, thereby increasing service life of the heating unit and the switch. | 09-04-2008 |
| 20080296397 | AUTOMATIC HEATING UNIT FOR PERSONAL COMPUTER - An automatic heating unit for personal computer includes an instruction save circuit that receives a turn-on signal from a power switch of the personal computer (PC) to thereby drive a temperature sensing circuit to sense an ambient temperature inside the PC. When it senses the ambient temperature is too low to allow normal computer booting, the temperature sensing circuit outputs a heating signal to drive a heating circuit to heat an interior of the PC. Otherwise, the temperature sensing circuit outputs a booting signal to enable a booting circuit to supply power to a mainboard of the PC. | 12-04-2008 |
| 20090127347 | METHOD AND APPARATUS FOR FORCED AIR HEATER MEASUREMENT AND CONTROL - A blower urges an airflow, at a rate according to a user-controlled flow rate command, through an electric heater and the electrical heater heats the airflow at a heater power based on a user-input temperature command, the user-input flow rate command, and a measured mass flow rate of the airflow. The heater power is calculated based on the heat energy required to heat air to the given reference temperature, at a flow rate corresponding to the measured mass flow rate. Optionally, the temperature of the air entering the electric heater is measured, and the heater power is calculated based on the heat energy required to heat air from the measured temperature to the given reference temperature, at a flow rate corresponding to the measured mass flow rate. | 05-21-2009 |
| 20100252644 | SYSTEM FOR SUPPLYING HEAT TO CONSTRUCTION EQUIPMENT CAB - An apparatus is provided that quickly elevates and maintain a construction equipment engine coolant to operating temperature in order to lower the dwell time for the operator's cab to reach a comfortable temperature level during a period when the engine is in idle and main crane functions are not operated. The apparatus includes an auxiliary hydraulic circuit for rapidly bringing engine coolant temperature up to operating temperature. Engine coolant operating temperature is achieved by inducing a hydraulic load to the engine. By inducing a hydraulic load, a horsepower load is exerted on the engine causing the engine to generate heat sufficient to raise the engine coolant to operating temperature for heating the cabin. A pressure reducing relieving valve and a pilot operated relief valve result in precise hydraulic horsepower load to the construction equipment engine. Operation of the pilot operated relief valve also warms hydraulic fluid for a hydraulic reservoir. | 10-07-2010 |
| 20110042472 | Portable Catalytic Heater - Provided is a portable heating device comprising a combustion-powered heater, a regulator, and an oxygen depletion sensor. The combustion-powered heater may be supplied by an associated fuel source and may comprise a combustion region comprising a catalytic surface. The regulator may be adapted for fluid communication with the associated fuel source. The oxygen depletion sensor may comprise a burner and a temperature detector. The burner may be in fluid communication with the regulator and may be adapted to combust fuel form the regulator with air to produce a flame. The temperature detector may be adapted to detect the temperature of the flame and may be adapted to selectively render the combustion-powered heater non-functional. | 02-24-2011 |
| 20120000986 | CANISTER FOR DEPOSITION APPARATUS AND DEPOSITION APPARATUS USING SAME - A canister for a deposition apparatus and a deposition apparatus using the same, and more particularly, a canister for a deposition apparatus that can provide a uniform amount of source material contained in a reaction gas supplied into a deposition chamber and improve safety in the supply of the source material, and a deposition apparatus using the canister. The deposition apparatus includes a deposition chamber; a canister supplying a reaction gas into the deposition chamber; and a carrier gas supplier for supplying a carrier gas into the canister, in which the canister includes a main body, a heating unit heating the main body and a temperature measuring unit disposed under the main body. | 01-05-2012 |
| 20120061482 | ICE DETECTION SYSTEM AND METHOD - An ice detection system, in particular to a system for detecting icing conditions and a system for detecting the presence of ice formed on a structure, and the methods for doing the same. Two heaters of the ice protection system (experiencing substantially the same environmental conditions) are driven to different temperatures (the first greater than or equal to 0° C., and the second less than 0° C.). The difference in the powers required to drive the two heaters indicates the prevailing environmental conditions. A heater of the ice protection system is driven and the rate of change of surface temperature is measured over several periods. A substantial deviation from a rate of change of surface temperature, which indicates the presence of ice on the surface of the structure, is detected. | 03-15-2012 |
| 20120234932 | VEHICULAR HEATING SYSTEM - A vehicular heating system comprising a passenger compartment air-conditioner and a radiative heater which heats a foot area of a passenger, said vehicular heating system detecting foot vent heat which said foot vent air flow has and controlling said passenger compartment air-conditioner and said radiative heater in accordance with that heat. | 09-20-2012 |
| 20140124587 | MODULATING BURNER SYSTEM - The present concept is a modulating burner system which includes a speed control responsive to inputs received from a thermostat, the speed control modulating a blower which provides combustion air and a vacuum proportional to the speed of the blower. The modulating burner system further includes a gas amplifying valve in communication with the vacuum via a vacuum conduit, the gas amplifying valve providing modulated combustion gas responsive to the vacuum; wherein modulated combustion air and gas communicated to a burner for continuously variable firing rates of 50 to 100% of the maximum firing rate. The modulating burner system further includes a damper for smoothing out vacuum spikes and fluctuations. | 05-08-2014 |
| 20080217420 | Reversing circulation for heating and cooling conduits - A method of circulating fluid to adjust a temperature of a material comprises providing a pressurized fluid source operative to adjust the temperature of a fluid and to push the fluid out through a supply port at a supply temperature and draw fluid in through a return port at a return temperature. A conduit is arranged in proximity to the material and the fluid is circulated through the conduit in alternating forward and reverse directions. An apparatus is provided for periodically reversing the direction of fluid flow through the conduit. | 09-11-2008 |
| 20080230620 | Hot Water Supply Apparatus - A hot water supply apparatus, capable of ensuring high safety in supplying hot water in case of power failure, which is configured as follows: When a voltage detected by a voltage sensor is a preset voltage or less, a mixing valve is operated so as to obtain a predetermined valve opening corresponding to a temperature detected by a temperature sensor. This permits the mixing valve to be driven by electric power when a voltage of a power supply drops, and the mixing valve to have such a valve opening that a temperature of hot water to be supplied to a user is a predetermined temperature or less, thus supplying hot water at a predetermined temperature or less to the user in case of power failure. | 09-25-2008 |
| 20090008467 | Vehicular air conditioner - When there arises a need to change an air conditioner capability, a vehicular air conditioner capable of easily meeting this need is achieved. Also, even if some of a plurality of air conditioner units break down, a vehicular air conditioner capable of properly air conditioning a vehicular space using other air conditioner units, is achieved. | 01-08-2009 |
| 20090121033 | Open-Loop Vertical Drywell Gradient Correction System and Method - A system and method are disclosed for controlling a drywell including a receiver having upper and lower ends with the lower end being more insulated than the upper and having a temperature sensor in thermal contact therewith. Upper and lower heaters are in thermal contact with the upper and lower ends respectively. A controller includes an integrated circuit having a temperature sensor. A reading from the integrated circuit is used to control power to the upper heater and reduce a temperature gradient between the upper and lower ends of the receiver. | 05-14-2009 |
| 20090121034 | Circulation pump, heating system and method of determining the flow rate of a liquid through a pipe - In order to provide a circulation pump for a conveyed liquid, comprising an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit, and an impeller that is connected in a rotationally fixed manner to the rotor, with advantageous properties, it is provided that the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump can be determined from a rotational speed of the rotor and/or a power consumption of the electric motor, and at least one signal output is provided, at which a flow rate signal and/or flow rate-dependent switching signal can be supplied by the circulation pump. | 05-14-2009 |
| 20100001087 | VARIABLE OUTPUT HEATING CONTROL SYSTEM - A variable output heating control system includes a user interface, an operating parameter sensor, a controller, a combination control valve, a plurality of variable flow valves, and a plurality of burners. The user interface allows a user to enter operating parameters, such as a set temperature. The operating parameters sensor provides measured parameters, such as a measured temperature. The controller receives the set temperature and the measured temperature and generates commands to control the flow of gas, based on the set temperature and the measured temperature. The combination control valve shuts off the flow of gas from an external gas source based on a command from the controller. The plurality of variable flow valves vary the flow of gas that is received from the combination control valve and supplied to the burners. The plurality of burners provide heat based on the combustion of gas that is received from the plurality of variable flow valves. | 01-07-2010 |
| 20100012741 | Coolant Systems For Electric And Hybrid-Electric Vehicles - A coolant system and method of operating the coolant system for a vehicle having a battery pack is disclosed. A method may include detecting a mountain grade descent condition; detecting a battery limit condition; and, if the mountain grade descent condition and the battery limit condition are detected, activating a coolant heater and a coolant pump to thereby accomplish an electric load shed. A method may include detecting a fuel cell stack warm up condition; and, if the fuel cell stack warm up condition is detected, activating a fuel cell coolant heater, a cabin coolant heater and a pump, and directing a coolant flowing through the cabin coolant heater through the fuel cell coolant heater and through a fuel cell stack to thereby warm the fuel cell stack. | 01-21-2010 |
| 20100025487 | FORCED DRAFT DIRECT VENT TYPE ROOM HEATER - The room heater has, in an outer case | 02-04-2010 |
| 20100176209 | Engine block warming controller - The engine block warming controller is an engine warming device for diesel engines. The controller includes a thermostat/temperature controller unit that monitors temperature outside during operation of the engine block warming controller. The unit includes a sensing probe for sensing the outside temperature. A heavy-duty outdoor timer controls time to turn on and off the engine block warming controller and a heavy-duty extension cord electrically connects the engine block warming controller to an engine cord of the vehicle. A backing board is used for securely receiving the engine block warming controller to mount it on an inside wall away from outside elements. A plurality of fasteners mounts the probe on an outside wall to detect a temperature of the outside elements. When the timer turns on the controller, the probe detects the outside temperature and warms the diesel engine. | 07-15-2010 |
| 20110266356 | Temperature gain control device and method thereof - This specification discloses a device of controlling temperature gain and the method thereof. The invention detects the temperature of work environment and uses it to generate a control signal and a PWM signal for dynamically controlling the heaters around electronic elements to heat up. When the temperature of work environment is too low, the invention can increase the stability of the electronic elements. | 11-03-2011 |
| 20110303755 | AIR CONDITIONING DEVICE - In an air conditioning device ( | 12-15-2011 |
| 20120043390 | HEAT PUMP - A heat pump including a boiler is disclosed. The heat pump may include a quick-hot-water-supply tank and the boiler, which may be operated selectively based on a temperature of external air or an electric power rate per unit heat quantity. | 02-23-2012 |
| 20130168458 | VEHICLE AIR CONDITIONER - An air conditioner is applied to a vehicle having a first operation mode in which an internal combustion engine-side driving force is more than a motor-side driving force, and a second operation mode in which the motor-side driving force is more than the internal combustion engine-side driving force, as an operation mode for the vehicle. The air conditioner includes a heater for heating air using a coolant of an internal combustion engine as a heat source, and a request signal output portion for outputting a request signal for increasing the number of revolutions of the internal combustion engine to a driving force controller during a heating operation of the vehicle interior. The request signal output portion outputs as the request signal, a signal that makes the number of revolutions increased in the second operation mode higher than that increased in the first operation mode. | 07-04-2013 |
| 20130168459 | Low-Power Residential Heating System - Method of thermal management of a building, on the basis of a thermal system equipped with a low-power generator, characterized in that it comprises a step (E | 07-04-2013 |
| 20130206852 | MOISTURE ABATEMENT IN HEATING OPERATION OF CLIMATE CONTROLLED SYSTEMS - Embodiments related to moisture abatement during a heating operation of a climate control system are disclosed. In some embodiments, the climate control system includes a thermoelectric device (TED) or other thermal condition device having a hot side and a cold side. In certain embodiments, the thermal conditioning device is operated (e.g., by a processor or a condensate switch) to inhibit or prevent the occurrence of condensation, and/or to abate condensation that has already occurred, on the cold side of the thermal conditioning device during the heating operation. | 08-15-2013 |
| 20130256423 | Heating System Including A Refrigerant Boiler - A heating system includes a refrigerant boiler including a heat source for heating a refrigerant from a liquid state to a vapor state, a boiler outlet and a boiler inlet; a heat exchanger in fluid communication with the refrigerant boiler, the heat exchanger including a upper manifold having a heat exchanger inlet coupled to the boiler outlet, a lower manifold having a heat exchanger outlet coupled to the boiler inlet and a plurality of tubes connecting the upper manifold and the lower manifold, wherein refrigerant passes from the upper manifold to the lower manifold via gravity; and a fan moving air over the heat exchanger to define supply air for a space to be heated. | 10-03-2013 |
| 20140175184 | PORTABLE CATALYTIC HEATER - One or more techniques and/or systems are disclosed for a portable heating device comprising a combustion-powered heater, a regulator, and an air quality detector, such as an oxygen depletion sensor. The combustion-powered heater may be supplied by an associated fuel source and may comprise a combustion region comprising a catalytic surface. The regulator may be adapted for fluid communication with the associated fuel source. The air quality detector may comprise a burner and a temperature detector. The burner may be in fluid communication with the regulator and may be adapted to combust fuel form the regulator with air to produce a flame. The temperature detector may be adapted to detect the temperature of the flame and may be adapted to selectively render the combustion-powered heater non-functional. | 06-26-2014 |
| 20140252100 | Gas Fired Modular Blower Control and Associated Methodology - An air heating and cooling system includes (1) a heat pump, illustratively devoid of auxiliary electric resistance type air heating structure, operative to provide refrigerant-based heating or cooling of air being delivered to a conditioned space, (2) a fuel-fired modular blower selectively operable to generate combustion heat, and (3) a control system associated with the heat pump and the modular blower. The control system has a heat pump thermostat electrically connected to a modular blower control and operative to transmit to the modular blower a first signal indicative of heating operation of the heat pump, and a second signal indicative of a need for alternative heat during a heating demand cycle. The modular blower is operative, in response to receiving both signals, to provide combustion-based air heating in place of refrigerant-based heat pump air heating. | 09-11-2014 |
| 20150090803 | AIR CONDITIONING SYSTEM - An air conditioning system includes a heat pump having a refrigerant radiator, a gas furnace unit having a heating section to heat passing air, a blower generating air flow through the radiator and the heating section, and a controller controlling operation of the heat pump unit, the gas furnace unit, and the blower. The controller has a first operating mode in which the gas furnace unit operates alone as a heat source unit, a second operating mode in which the heat pump unit operates alone as a heat source unit, and a third operating mode in which the gas furnace unit and the heat pump unit operate at the same time as a heat source unit. The controller is configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air. | 04-02-2015 |
| 20150122901 | Wear-Leveling for Components of an Auxiliary Heat Source - In at least some embodiments, an air handler includes a coil and a fan. The air handler also includes an auxiliary heat source having a plurality of heat elements. The auxiliary heat source implements a wear-leveling algorithm to cycle use of the heat elements over multiple auxiliary heat cycles. | 05-07-2015 |
| 20150136863 | ROOM HEATER - A room heater is operated on receiving an on-command from a thermostat when a detected temperature detected by a second room-temperature detector falls below a first reference temperature, and is stopped on receiving an off-command when the temperature detected by the second room-temperature detector is above a second reference temperature that is set higher than the first reference temperature or when the thermostat is manually operated to be switched off. A setting temperature for temperature control to be carried out when the on-command is received again is updated according to a difference between the set temperature and the temperature detected by the first room-temperature detector on receiving the off-command. When the off-command is received before passing a predetermined period of time after receiving the on-command, the updating of the set temperature is prohibited if the temperature detected by the first room-temperature detector is below a predetermined minimum lower reference temperature. | 05-21-2015 |
| 20150298523 | AUXILIARY HEATING SYSTEM FOR VEHICLES - An auxiliary heating system for a vehicle interacts with an ignition controller having a Run state in which an engine of the vehicle is running and an Off state in which the engine is not running. An auxiliary heater has a Parking mode for heating a passenger cabin of the vehicle when the ignition controller is in the Off state. An auxiliary heater controller has a user-configurable setting for selectably entering the Parking mode when the ignition controller enters the Off state. A manual interface is responsive to a user to provide user commands to the auxiliary heater controller including setting commands during the Run state for determining the user-configurable setting and a cancel command during the Off state for terminating the Parking mode. | 10-22-2015 |
| 20150362217 | Apparatus for Controlling a Solid Fuel Forced Hot Air Furnace - In a wood pellet fueled forced hot air heating system, a burner is regulated in response to an ambient air, or supply plenum, temperature. The burner regulating means allows for increased burner cycle times. The air handler is regulated in response to a space to be heated, or room, temperature, typically through the use of a mechanical thermostat. The air handler regulating means when used in conjunction with the burner regulating means allows for immediate heat response during a heat call. | 12-17-2015 |
| 20160040907 | HVAC SYSTEMS AND METHODS WITH IMPROVED HEATING ELEMENT CONTROL - Systems, tools, and methods are presented that enable a circuit to introduce a random time delay before actuating a relay to start or stop a supply of electrical power to a heating element of a heating, ventilating, and air conditioning (HVAC) system. In one instance, the circuit includes a time-delay switch electrically connected to the relay. The time-delay switch has a random time delay before entering a closed state or open state. The relay is operable to start and stop a supply of electrical power to the heating element in response to the switch entering, respectively, the closed state and the open state. Other systems, tools and methods are presented. | 02-11-2016 |
| 20160076778 | LOCALIZED THERMAL MANAGEMENT SYSTEM - Localized thermal management system. The system includes an array of emitters of beams of infrared radiation mourned for rotation within a volumetric space. A motion tracking system determines location coordinates of at least one individual moving within the space and a servomotor controls the rotation of the emitters to direct at least one beam toward the at least one individual to provide local warming. | 03-17-2016 |
| 20160195285 | Variable Output Heating Control System | 07-07-2016 |
| 20080197206 | Refrigerant System With Water Heating - A heat pump system ( | 08-21-2008 |
| 20080210768 | Heat Pump System and Method For Heating a Fluid - This invention relates to a heat pump system and in particular to a heat pump system and method for heating a fluid. According to one aspect of the invention, there is provided a heat pump system for heating a fluid, said system including: an evaporator for extracting heat from a heat source to vaporise a refrigerant; a compressor fluidly connected to said evaporator for compressing said refrigerant vapour; a condenser fluidly connected to said compressor for transferring heat from said compressed refrigerant to said fluid; a main expansion device fluidly connecting said condenser to said evaporator for reducing the temperature of the refrigerant; means for diverting and reducing the temperature of a portion of said refrigerant from said condenser, and means for fluidly injecting said temperature reduced refrigerant portion into said compressor such that said temperature reduced refrigerant portion mixes with said refrigerant vapour at an intermediate pressure and induces at least quasi-two-stage compression of said refrigerant vapour and said refrigerant portion for discharge into said condenser. According to another aspect of the invention, there is provided a method for heating a fluid, said method including the steps of: extracting heat from a heat source to vaporise a refrigerant; compressing said refrigerant vapour to increase its temperature; transferring heat from said compressed refrigerant vapour to said fluid; diverting and reducing the temperature of a portion of said refrigerant after said transferring step; reducing the temperature of said refrigerant; introducing said temperature reduced refrigerant portion during said compressing step such that said temperature reduced refrigerant portion mixes with said refrigerant vapour at an intermediate pressure and induces at least quasi-two-stage compression of said refrigerant vapour and said refrigerant portion, and discharging said compressed refrigerant to transfer heat to said fluid in said transferring step. | 09-04-2008 |
| 20080296396 | Heat Pump for Heating Swimming Pool Water - The invention relates to a heat pump. It relates to a heat pump which, in a primary circuit, comprises a compressor ( | 12-04-2008 |
| 20100025488 | Hot water circulation system associated with heat pump and method for controlling the same - Disclosed is a hot water circulation system associated with a heat pump and a method for controlling the same. The present invention is advantageous in that heating or hot water supply can be performed smoothly even when an outdoor unit performing a heat pump cycle performs a defrosting operation. | 02-04-2010 |
| 20100038441 | ENERGY SYSTEM WITH A HEAT PUMP - The invention provides a system for collection of thermal energy. The system comprises an energy collector, an energy reservoir, and an energy collection medium for circulation between the energy collector and the energy reservoir. Furthermore, the system comprises a heat pump which is adapted to decrease the temperature of the energy collection medium outside the energy collector. | 02-18-2010 |
| 20100051713 | Hot water circulation system associated with heat pump and method for controlling the same - Disclosed is a hot water circulation system associated with a heat pump and a method for controlling the same. The present invention allows the system to be defrosted while hot water supply or a heating operation is performed, making it possible to improve a phenomenon that heating efficiency is deteriorated. | 03-04-2010 |
| 20100090017 | Hybrid heating system and method - A hybrid heating system ( | 04-15-2010 |
| 20110011943 | HEATING INSTALLATION AND METHOD FOR CONTROLLING THE HEATING INSTALLATION - A heating installation includes a heat pump, heating fluid piping passing through a condenser of the heat pump to exchange heat between refrigerant and heating fluid, first and second objects heated by the heating fluid to first and second set temperatures, a valve switchable between first and second positions to supply heating fluid to the first and second objects, sensors detecting first and second actual temperatures at the first and second objects, and a control. The heat pump also has an evaporator, a compressor and an expansion device. The control in a demand dependent mode, is configured to determine a first demand based on the first set and actual temperatures and a second demand based on the second set and actual temperatures, and is configured to switch the valve to the first and second positions based on comparison of the first and second demands. A method for controlling a heating installation heats the first or second object based on such a comparison. | 01-20-2011 |
| 20120205456 | HEAT PUMP HOT-WATER SUPPLY SYSTEM - A heat pump hot-water supply system includes a heat pump hot-water supply device, an electricity storage device, and a control device. The control device determines an operating time zone of the heat pump hot-water supply device based on power conversion efficiency of the electricity storage device, coefficients of performance of the heat pump hot-water supply device of a current day and a next day, and an electricity rate structure of a commercial power system. | 08-16-2012 |
| 20120280052 | HOT-WATER HEAT PUMP AND METHOD OF CONTROLLING THE SAME - A hot-water heat pump that is capable of reducing installation costs and installation space and also reducing the heating time of a hot-water route, and a method of controlling the same are provided. The hot-water heat pump ( | 11-08-2012 |
| 20140263682 | RETROFIT HOT WATER SYSTEM AND METHOD - A hot water system and method are provided. The system includes a tank configured to receive hot water, a heat recovery system for heating water, and a controller configured to use the heat recovery system to maintain the hot water in the tank at a temperature within a predetermined range of temperatures. The method involves receiving a flow of water and heating the water using the hot water system. | 09-18-2014 |
| 20140291411 | HEAT PUMP HEATING AND HOT-WATER SYSTEM - A heat pump heating and hot-water system includes a water heating heat exchanger for heating water by heat exchange with a heating medium heated by a heat pump unit, an indoor heating unit, a heating circulation circuit for selectively pumping the heating medium to either of the water heating heat exchanger and the indoor heating unit using a heating medium pump, and a hot-water accumulating circuit that sends water in a hot-water storage tank to the water heating heat exchanger and returns water having passed through the water heating heat exchanger to the hot-water storage tank using a water pump. The volumetric flow rate of the heating medium pumped to the water heating heat exchanger by the heating medium pump is higher than or equal to the volumetric flow rate of the water pumped to the water heating heat exchanger by the water pump. | 10-02-2014 |
| 20150034730 | HEATING AND HOT WATER SUPPLY SYSTEM - The system includes: a heat pump unit; a hot water supply heat exchanger; heating heat exchangers; a pump; heat medium pipes that connect a discharge side of the pump, the heat pump unit, the hot water supply heat exchanger, the heating heat exchangers, and a suction side of the pump in order; a first bypass pipe that bypasses the hot water supply heat exchanger from the heat medium pipe; a second bypass pipe that bypasses the heating heat exchangers from the heat medium pipe; a four-way valve that regulates flow distribution of the heat medium between the hot water supply heat exchanger and the first bypass pipe | 02-05-2015 |
| 20150115048 | THERMOSTATIC CONTROLLED HEAT PUMP WATER CIRCUIT - A method for regulating coolant temperature of an HVAC heat pump system with coolant heating. The method includes measuring temperature of coolant flowing through the system, and configuring a valve assembly of the system to direct coolant flow to a heater core from both an engine and an engine bypass line when temperature of the coolant is above a predetermined threshold. | 04-30-2015 |
| 20150330662 | HEATING DEVICE AND METHOD FOR OPERATING THE SAME - A heating device includes: a fluid reservoir; a heat exchanger whose feed line is hydraulically connected to the fluid reservoir geodetically deeper than its return line; a pump situated in the feed line or the return line; a bypass hydraulically connected to the feed line and to the return line, the bypass bypassing the heat exchanger and the pump; and a three-way valve situated in the connection of the bypass to the feed line or in the connection of the bypass to the return line. Based on a comparison of a setpoint temperature with a first fluid temperature determined in the return line between the heat exchanger and the bypass, the three-way valve is switched into a first switch position in which the bypass is at least partially open, or the three-way valve is switched into a second switch position in which the bypass is closed. | 11-19-2015 |
| 20160069574 | HEAT PUMP WATER HEATER APPLIANCE AND A METHOD FOR OPERATING A HEAT PUMP WATER HEATER APPLIANCE - A method for operating a water heater appliance includes establishing a standby recovery temperature for the heat pump water heater appliance based at least in part on a set temperature of the heat pump water heater appliance and activating a sealed system of the heat pump water heater appliance if a temperature measurement from a tank temperature sensor is less than the standby recovery temperature. An ambient temperature may also be used to establish the standby recovery temperature for the heat pump water heater appliance. A related water heater appliance is also provided. | 03-10-2016 |
| 20160200171 | APPARATUS AND METHOD FOR DRIVING SWITCHING ELEMENT, AND VEHICLE AIR-CONDITIONING APPARATUS | 07-14-2016 |
| 20220136712 | COMBINED SPACE AND WATER HEATING SYSTEMS - A combination domestic hot water and space heating system is disclosed. The system includes two refrigerant circuits, one dedicated to heating potable water in a water storage tank and one dedicated to heating a condenser used to heat a space within a building. A controller sends output signals to valves to vary refrigerant flow into the first refrigerant circuit and/or the second refrigerant circuit. The variation in refrigerant flow can be provided by a single multi-directional valve, one or more valves placed at a first end of each refrigerant circuit, and/or one or more electronic expansion valves placed at the end of each refrigerant circuit. Portions of the system can be placed into a single housing, thereby reducing installation costs and labor. | 05-05-2022 |
