With Vapor Compression System Patents (Class 62/238.6)
  • Patent number: 10605469
    Abstract: In one embodiment of the present disclosure, a heating, ventilating, and air conditioning (HVAC) system includes a refrigerant circuit configured to flow a refrigerant. The refrigerant circuit includes a compressor configured to compress the refrigerant, a condenser configured to receive the refrigerant from the compressor and to condense the refrigerant, a valve configured to receive a first portion of the refrigerant from the condenser and to decrease a pressure of the first portion of the refrigerant, and an evaporator configured to receive the first portion of the refrigerant from the condenser and configured to evaporate the first portion of the refrigerant. The refrigerant circuit also includes a refrigerant sub-circuit configured to receive a second portion of the refrigerant from the condenser and to convert thermal energy of the second portion of the refrigerant to electrical energy.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: March 31, 2020
    Assignee: Johnson Controls Technology Company
    Inventors: Tyler P. McCune, Shawn A. Hem, Brian D. Rigg, Jedidiah O. Bentz, Aneek M. Noor, Theresa N. Gillette, Tom R. Tasker, Shaun B. Atchison
  • Patent number: 10597886
    Abstract: A swimming pool heating system, including a heat pump and control of the compressor of the heat pump according to a number of non-zero power levels, is detailed. The system includes, for example, three power levels, the first level being close to 40% of the maximum compressor speed, the second level being close to 70% of the maximum compressor speed, and the third level being close to 100% of the maximum compressor speed.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: March 24, 2020
    Assignee: ZODIAC POOL CARE EUROPE
    Inventors: RĂ©mi Deloche, Brice Leroyer
  • Patent number: 10591171
    Abstract: A subcooler is made up of a plate type heat exchanger. The accumulator is located between a compressor and the subcooler in a width direction of an outdoor unit in a planar view. The subcooler overlaps with the accumulator in the width direction in the planar view. As a result, a compact heat pump can be provided when the subcooler is a plate type heat exchanger.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: March 17, 2020
    Assignee: YANMAR CO., LTD.
    Inventors: Norihiro Okuda, Terunori Aikawa, Hirotoshi Kihara
  • Patent number: 10544971
    Abstract: A method for controlling a vapor compression system (1) is disclosed, the vapor compression system (1) comprising an ejector (5). The method comprises controlling a compressor unit (2) in order to adjust a pressure inside a receiver (6), on the basis of a detected pressure of refrigerant leaving an evaporator (8). The portion of refrigerant leaving the evaporator (8) which is supplied to a secondary inlet (15) of the ejector is maximized and the portion of refrigerant supplied directly to the compressor unit (2) is minimized, while ensuring that the pressure of refrigerant leaving the evaporator (8) does not decrease below an acceptable level.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: January 28, 2020
    Assignee: DANFOSS A/S
    Inventors: Kristian Fredslund, Frede Schmidt, Kenneth Bank Madsen, Jan Prins
  • Patent number: 10458678
    Abstract: An apparatus for heating water has a tank for storing water and an air conditioning system that defines a refrigerant flow path through which refrigerant flows. The refrigerant flow path passes through a heat exchanger so that refrigerant heat is contributed to the tank. The heat exchanger houses a phase change material. A controller controls operation of the water heating apparatus.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 29, 2019
    Assignee: Rheem Manufacturing Company
    Inventors: Troy E. Trant, Qian Zhang
  • Patent number: 10429090
    Abstract: An air conditioning system including a condenser system and a closed-loop air-to-water system. The condenser system includes a compressor which pressurizes refrigerant and distributes the pressurized refrigerant to at least one condenser coil, which climatizes water; and a fan which exhausts heat from the pressurized refrigerant. The closed-loop air-to-water system includes a climatized liquid tank, which receives climatized water from the at least one condenser coil; and an air handler disposed within a building, the air handler having a climatized liquid coil. The air handler is disposed to receive air from inside the building; transfer thermal energy from the climatized liquid coil to ambient air, creating climatized air; and distribute the climatized air to at least a portion of the building. The climatized water may be distributed to a recycled liquid tank, which may redistribute the climatized water to the climatized liquid tank, forming a closed-loop air-to-water system.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 1, 2019
    Inventor: Willis Lewin Usilton
  • Patent number: 10401068
    Abstract: Air cooled chillers have auxiliary heat recovery systems that include a heat recovery heat exchanger for transferring heat from a compressed refrigerant to a process fluid. According to certain embodiments, the air cooled chillers also includes a compressor, a condenser, an expansion device, and a controller to govern operations of the expansion device, a fan in the condenser, and other components of the chiller system. The controller may receive signals from temperature and pressure sensors located throughout the chiller system in order to determine a heat recovery load of the heat recovery heat exchanger. The controller may govern operations of the condenser fan and the expansion device according to a low heat recovery mode, an intermediate heat recovery mode, or a full heat recovery mode. In full heat recovery mode, the controller operates the expansion device based on subcooling detected in the heat recovery heat exchanger.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: September 3, 2019
    Assignee: Johnson Controls Technology Company
    Inventors: William L. Kopko, Satheesh Kulankara
  • Patent number: 10281180
    Abstract: In one aspect, an air conditioning system is provided. The air conditioning system includes a refrigeration circuit having a refrigerant and an economizer circuit, and a subcooling circuit thermally coupled to the refrigeration circuit, the subcooling circuit including a thermal energy storage (TES) unit and a phase change material (PCM) for thermal exchange with the refrigerant.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 7, 2019
    Assignee: CARRIER CORPORATION
    Inventor: Zidu Ma
  • Patent number: 10273628
    Abstract: Disclosed is a control method for a laundry drying machine. The control method includes driving a compressor configuring the heat pump cycle for generation of heated air, sensing a compressor outlet temperature (TE) and a drum outlet temperature (TD), and determining plugging of a filter, based on a difference between the compressor outlet temperature (TE) and the drum outlet temperature (TD).
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: April 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Haeyoon Je, Junseok Lee
  • Patent number: 10226983
    Abstract: A motor vehicle may include an internal combustion engine and an air-conditioning system, which may include a heat exchanger and a compression refrigeration system. The heat exchanger and the compression refrigeration system may be incorporated into a coolant circuit configured to communicate a coolant flow and may have a pump. The compression refrigeration machine may be driven at least one of directly and indirectly via the internal combustion engine. An adsorption system may be incorporated into the coolant circuit and may be connected to the internal combustion engine in a heat-transferring manner. The adsorption system may be configured to receive a waste heat load from the internal combustion engine for operation. A valve device may be incorporated into the coolant circuit and be switchable between at least two position for distributing the coolant flow between the adsorption system and the compression refrigeration system.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: March 12, 2019
    Assignee: Mahle Behr GmbH & Co. KG
    Inventors: Lars Ludwig, Dirk Neumeister, Roland Burk
  • Patent number: 10222078
    Abstract: An air temperature and humidity control device using a liquid-desiccant humidity controller thermally coupled to a heat pump is disclosed. The humidity controller may include a contactor having at least one contact module with a porous sidewall that is permeable to water vapor and impermeable to the liquid desiccant. The disclosed device provides air temperature control through heat transfer between the liquid desiccant and heat pump and provides humidity controls through water transfer between the desiccant and surrounding air.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: March 5, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Zidu Ma, Yirong Jiang, Dong Luo
  • Patent number: 10168087
    Abstract: A heat pump including an integrated system for the management of refrigerant charge is provided. The heat pump includes an indoor line and an outdoor line that are connected to a compressor through a reversing valve. Refrigerant charge is managed by coupling the inactive line to the suction side of the compressor. For example, the heat pump can include an expansion valve to couple the inactive line to the compressor to supplement the flow-rate of refrigerant. The heat pump is operable in a dedicated water heating mode and a space cooling and water heating mode in some embodiments, while other modes of operation are contemplated in other embodiments.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: January 1, 2019
    Assignee: UT-Battelle, LLC
    Inventors: Jeffrey D. Munk, Moonis R. Ally
  • Patent number: 10132507
    Abstract: A combined hot water and air heating and conditioning system including a first heat exchanger, a heat pump, a chilling tower loop, a burner and a second heat exchanger to provide hot water, air heating and air cooling. The system provides hot water, air heating and cooling all in one single unit. The system utilizes a heat pump to remove heat from ambient air and transfer the rejected heat into a hot water system, thereby using waste heat to heat the hot water system. The system utilizes a heat exchanger not only for the purpose of transferring heat from a heating source to a fluid in the heat exchanger but also for the purpose of dissipating heat from the fluid in the heat exchanger to the surroundings of the heat exchanger, thereby allowing a heat pump to act both as an air heating and conditioning device.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: November 20, 2018
    Assignee: Intellihot, Inc.
    Inventors: Sridhar Deivasigamani, Sivaprasad Akasam
  • Patent number: 10107525
    Abstract: A geothermal system having a heat pump with a heat exchange, first and second conduits connected to and in fluid communication with the heat pump, a compressor connected to and in fluid communication with the first and second conduit, a plurality of valves on the first and second conduit that are connected to and in fluid communication with other valves wherein one valve is a thermo expansion valve, and a sensor on the first conduit and electrically connected to the thermo expansion valve.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: October 23, 2018
    Inventor: Steve Kapaun
  • Patent number: 10099263
    Abstract: A washing and drying machine has a treatment tub and comprises: a washing circuit, for drawing liquid from the tub and conveying it back into the tub, having a pump and means for heating the liquid; a drying circuit for extracting air from the tub and conveying it back into the tub, having a first fan, means for dehumidifying the air, and means for heating the dehumidified air; and a heat-pump arrangement having a refrigerating circuit for a refrigerant fluid, which includes a first condenser, a first evaporator, a first lamination valve, and a compressor. The means for heating the liquid comprise the first condenser, and the refrigerating circuit further comprises a second condenser, in series to the first condenser, and a second evaporator. The means for dehumidifying the air comprise the second evaporator, and the means for heating the dehumidified air comprise the second condenser.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: October 16, 2018
    Assignee: Indesit Company, S.P.A.
    Inventors: Andrea Cagnasso, Mario Lippera, Gianluca Benedetto, Luca Brazzarola, Diego Driussi, Ivan Murador
  • Patent number: 10047985
    Abstract: A refrigerant flow through a refrigerant circuit may be cooled with a cold cooling fluid flow from a thermal storage unit to generate a warm cooling fluid flow. The cold cooling fluid flow and the warm cooling fluid flow may be thermally isolated in the thermal storage unit, and a chiller system may cool the warm cooling fluid flow from the thermal storage unit to at least partially produce the cold cooling fluid flow.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: August 14, 2018
    Assignee: Johnson Controls Technology Company
    Inventor: William L. Kopko
  • Patent number: 10041204
    Abstract: Provided is a clothes treating apparatus. The clothes treating apparatus may include a clothes receiving device providing a space for receiving clothes therein, a circulation passage provided in the clothes receiving device and configured to provide a flow path for air circulation through the clothes receiving device, and a heat-exchanging device provided in the circulation passage and configured to dehumidify air introduced into the circulation passage. A blower may be provided in the circulation passage and configured to circulate air within the clothes receiving device. A condensed water discharge device may be provided at a lower surface of the circulation passage and configured to discharge condensed water generated by the heat-exchanging device. The condensed water discharge device may include a backflow-preventing member that prevents backflow of the condensed water from the condensed water discharge device to the circulation passage.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 7, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Youngsuk Kim, Sangwook Hong, Hyojun Kim
  • Patent number: 10012132
    Abstract: A cooling system of an internal combustion engine includes a first flow passage supplying a cooling medium of the internal combustion engine to a radiator, a second flow passage branching from the first flow passage by a flow control valve to supply the cooling medium to a first heat exchanging portion, a third flow passage provided separately from the first flow passage to supply the cooling medium to a second heat exchanging portion via an on-off valve and a control portion controlling the on-off valve and the flow control valve based on a temperature of the cooling medium.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: July 3, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Naoto Yumisashi, Masanobu Matsusaka
  • Patent number: 9970693
    Abstract: A refrigeration cycle apparatus includes refrigerant circuits each configured to circulate a refrigerant of the same composition. The refrigerant circuit is provided with a radiator configured to condense the refrigerant to transfer heat to external fluid, and the refrigerant circuit is provided with a radiator configured to transfer heat to the external fluid while allowing the refrigerant to be maintained in a supercritical state. The radiator is arranged upstream of the radiator in a direction of a flow of the external fluid. A capacity of a refrigerant flow channel of the radiator is smaller than a capacity of a refrigerant flow channel of the radiator.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: May 15, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Ito, Takashi Okazaki, Akira Ishibashi, Shinya Higashiiue, Shigeyoshi Matsui, Yuki Ugajin, Takumi Nishiyama
  • Patent number: 9964004
    Abstract: The present invention relates to apparatus, systems, and methods of managing large quantities of low-grade waste heat energy by generating excess electrical power via an ORC process driven by the removal and recovery of waste heat under favorable operating conditions, and utilizing the same apparatus to provide waste heat removal via a refrigeration process that consumes electrical power when environmental conditions do not permit operation in the ORC mode. The mode of operation of the system is principally determined by the thermal energy of the waste heat stream and the availability, or lack thereof, of adequate cooling resources. Such resources are often subject to local environmental conditions, particularly ambient temperature which varies on a diurnal and annual basis.
    Type: Grant
    Filed: December 13, 2015
    Date of Patent: May 8, 2018
    Assignee: ElectraTherm, Inc.
    Inventors: Andrew Oxner, Hans Wain
  • Patent number: 9950198
    Abstract: An apparatus includes a scrubber bed, a cooling unit operatively connected to the scrubber bed, and a frame configured for a user to carry the apparatus. The cooling unit includes a compressor, a condensing coil operatively connecting the compressor to an expansion valve, and an evaporating coil operatively connecting the expansion valve to the compressor, and a first fluid circulating through the compressor, the condensing coil, the expansion valve, and the evaporating coil. A method of cooling a gas in a rebreather apparatus includes scrubbing an exhalation gas to produce a recycled gas having a lower concentration of carbon dioxide than the exhalation gas, compressing, condensing, expanding, and evaporating a refrigerant in a closed-loop system, transferring heat energy from the recycled gas to the refrigerant, and metering a cooled gas to the user.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 24, 2018
    Assignee: O2 Dive Technologies, Inc.
    Inventors: Mark Alan Johnson, Gene Melton
  • Patent number: 9885504
    Abstract: Heat pump systems and methods for providing chilled/hot liquid for air-conditioning and domestic hot-water, are provided. The heat pump systems include a first heat exchanger, a second heat exchanger and a third heat exchanger (e.g., a hot-water heat exchanger) that share at least one expansion valve disposed at a downstream position of the hot-water heat exchanger. The at least one expansion valve is disposed between the hot-water heat exchanger and the first and second heat exchangers. The heat pump systems can provide six operation modes, including a cooling mode, a heating mode, a water-heating mode, a heat-recovery mode, a simultaneous heating and water heating mode, and a defrost mode.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: February 6, 2018
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Liang Xu, Yuqing Du, Jun Wang, Jing Lei, Chungang Wang, Guangyu Shen
  • Patent number: 9869466
    Abstract: A heat recovery system arranged to heat water includes at least one heat exchanger (9) arranged to heat water by heat exchange with waste heat. A storage reservoir (11) is arranged to store water heated by the heat exchanger (9). The heat exchanger (9) is switchable between a first mode of operation in which water is circulated by a pump (12) in a circuit that includes the storage reservoir (11) and the heat exchanger (9), and a second mode of operation in which water is circulated by the pump (12) in a circuit that by-passes the heat exchanger (9). Heated water of at least a desired minimum temperature can be supplied to at least one outlet during both the first and second modes of operation.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 16, 2018
    Assignee: Waste Heat Recovery Ltd.
    Inventor: Colin Thomas Thomson
  • Patent number: 9816732
    Abstract: An energy transfer unit for a geothermal system includes an outer housing. A heat exchanger is located within the housing. An inlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid to the heat exchanger and an outlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid from the heat exchanger.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: November 14, 2017
    Assignee: Heat-Line Corporation
    Inventors: Lorne R. Heise, Matthew J. H. Roberts, Fraser F. Newton, David S. Lamb
  • Patent number: 9811126
    Abstract: A data center cooling system is operated in a first mode, and has an indoor portion wherein heat is absorbed from components in the data center by a heat transfer fluid, and an outdoor heat exchanger portion and a geothermal heat exchanger portion. The first mode includes ambient air cooling of the heat transfer fluid in the outdoor heat exchanger portion and/or geothermal cooling of the heat transfer fluid in the geothermal heat exchanger portion. Based on an appropriate metric, a determination is made that a switch should be made from the first mode to a second mode; and, in response, the data center cooling system is switched to the second mode. The second mode is different than the first mode.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 7, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Timothy J. Chainer, Pritish R. Parida
  • Patent number: 9796247
    Abstract: A vehicle air conditioner which can enlarge an effective range of a dehumidifying and cooling mode to realize comfortable air condition in a vehicle interior. A controller changes and executes at least one of a heating mode, a dehumidifying and heating mode, a dehumidifying and cooling mode, and a cooling mode. In at least the dehumidifying and cooling mode, the controller controls a capability of a compressor (2) on the basis of a temperature of a heat absorber (9), and controls a valve position of an outdoor expansion valve (6) on the basis of a temperature or a pressure of the radiator (4), and executes a radiator temperature prior mode to enlarge the capability of the compressor (2), in a case where heat radiation in the radiator (4) runs short.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: October 24, 2017
    Assignee: Sanden Holdings Corporation
    Inventors: Ryo Miyakoshi, Kenichi Suzuki, Hidenori Takei, Kouhei Yamashita
  • Patent number: 9759450
    Abstract: The present disclosure relates to systems and methods for connecting to an auxiliary power source and operating a water heater. One exemplary aspect is directed to a water heater configured to heat a volume of water. The water heater can include a first heating system configured to operate at a first power and a second heating system configured to operate at a second power. The second power can be less than the first power. The water heater can further include a first AC connection configured to receive externally supplied AC power at a first voltage and a second AC connection configured to receive externally supplied AC power at a second voltage. The second voltage can be less than the first voltage. The water heater can use only the second heating system when the second AC connection receives the externally supplied AC power at the second voltage.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: September 12, 2017
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: John Joseph Roetker, Brian Michael Schork
  • Patent number: 9714769
    Abstract: An air conditioner is disclosed. The air conditioner includes an indoor unit, a first outdoor unit including a first outdoor heat exchanger and a first compressor to be driven by electricity, a second outdoor unit including a second outdoor heat exchanger and a second compressor to be driven by an engine, a cooling water line, through which cooling water to cool the engine flows, and at least one waste heat-recovering heat exchanger for exchanging heat between refrigerant to be introduced into at least one of the first outdoor heat exchanger and the second outdoor heat exchanger and the cooling water flowing through the cooling water line. By provision of the waste heat-recovering heat exchanger, which heat-exchanges hot cooling water with refrigerant flowing through the first and second outdoor heat exchangers, frost formed on the first and second outdoor units during low-temperature heating is removed.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 25, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Song Choi, Baikyoung Chung, Hojong Jeong, Wooho Cha
  • Patent number: 9631847
    Abstract: The volume ratio of a hot-water-supply-side liquid extension pipe to a water heat exchanger is set to be equal to or more than the minimum volume ratio, which is the volume ratio of the hot-water-supply-side liquid extension pipe to the water heat exchanger when the required refrigerant amount during a cooling and hot water supply simultaneous operation in which an indoor-side heat exchanger serves as an evaporator, the water heat exchanger serves as a condenser, cooling energy is supplied from the indoor-side heat exchanger, and heating energy is supplied from the water heat exchanger is equal to the required refrigerant amount during a heating operation in which a heat-source-side heat exchanger serves as an evaporator, the indoor-side heat exchanger serves as a condenser, and heating energy is supplied from the indoor-side heat exchanger.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 25, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shogo Tamaki, Makoto Saito, Ryo Oya
  • Patent number: 9581340
    Abstract: A preheat tank to which a heat exchanger is operatively coupled receives water from a distribution subsystem. A water distribution subsystem and tempered fluid distribution subsystem provide domestic water and tempered fluid, respectively, to a plurality of spaces. Air handlers transfer heat between the tempered fluid and the spaces for heating and cooling. A controller coupled to the tempered fluid subsystem, the heat exchanger and a refrigerator has: (i) a first mode, wherein the fluid is routed through the heat exchanger, to pass heat to the preheat tank; and (ii) a second mode, wherein the fluid is routed through an evaporator of the refrigerator, to pass heat to the refrigerant. A storage tank is coupled to the preheat tank to receive water therefrom and is coupled to the condenser of the refrigerator such that heat rejected by the condenser is passed to the contents of the storage tank.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: February 28, 2017
    Assignee: BillyBob Corporation
    Inventor: Robert G. Rutherford
  • Patent number: 9562700
    Abstract: A use-side unit and an air conditioner that can feed out air at a target temperature into a target space are provided. A use-side evaporator that recovers moisture obtained by cooling and condensing the air to be fed out into the space to be air-conditioned or the like and dehumidifies it so as to obtain target relative humidity, a use-side condenser that heats the air having passed through the use-side evaporator by heat exchange, adjusts it to a target dry-bulb temperature and feeds it out into the space to be air-conditioned or the like, and a use-side controller that calculates a correction value if a difference between a dry-bulb temperature according to the detection of a temperature detector that detects a dry-bulb temperature of the air to be fed out into the target space and the target dry-bulb temperature is larger than a predetermined value and performs processing to correct a target intermediate dry-bulb temperature.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 7, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Yoshiyuki Watanabe
  • Patent number: 9482446
    Abstract: A heat pump water heater includes: a compressor; a first water-refrigerant heat exchanger; a second water-refrigerant heat exchanger; refrigerant paths capable of forming a refrigerant circuit; and water channels including a flow channel, the flow channel leading hot water that has passed through the second water-refrigerant heat exchanger to the first water-refrigerant heat exchanger. The heat pump water heater is able to perform a heating operation. In the heating operation, the hot water heated in the second water-refrigerant heat exchanger is fed to the first water-refrigerant heat exchanger and the hot water further heated in the first water-refrigerant heat exchanger is supplied to a downstream side of the water channels. The first water-refrigerant heat exchanger is able to be replaced without replacing the second water-refrigerant heat exchanger.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: November 1, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: So Nomoto, Kensaku Hatanaka, Keisuke Takayama
  • Patent number: 9376303
    Abstract: A temperature-controlled beverage dispenser is disclosed, which provides a cold plate having disposed therein beverage lines and refrigerant lines. The refrigerant lines may be connected to a cooling system, such as a heat exchanger, which is configured to remove heat from the cold plate. The beverage lines may be connected to a beverage supply for dispensing a desired beverage. Valves and a pressure sensor in the refrigerant line are connected to a microprocessor. At regular intervals, the microprocessor closes the valves, waits a short time, and then takes a pressure reading, which corresponds to a temperature. If the temperature falls below a desired value, then the cooling system is shut off. This permits the microprocessor to closely control the temperature of the beverage being dispensed.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: June 28, 2016
    Assignee: Cleland Sales Corp.
    Inventors: Joseph Chadwell, William Edwards, Michael Romanszyn, James Chaput
  • Patent number: 9291074
    Abstract: An engine-waste-heat utilization device includes a Rankine cycle with a heat exchanger that is configured to recover engine-waste-heat to refrigerant, an expander that is configured to generate power using the refrigerant coming out from the heat exchanger, a condenser that is configured to condense the refrigerant coming out from the expander and a refrigerant pump that is configured to supply the refrigerant coming out from the condenser to the heat exchanger by being driven by the expander, a power transmission mechanism (crank pulley, pump pulley, belt) that is configured to transmit surplus power to the engine when the expander has spare power even if the refrigerant pump is driven, a clutch that is configured to connect and disconnecting power transmission by the power transmission mechanism, and a case provided near a high-temperature part of the engine such that a shaft of the expander and that of the refrigerant pump are coaxially arranged, the clutch, the refrigerant pump and the expander are integr
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: March 22, 2016
    Assignees: NISSAN MOTOR CO., LTD., SANDEN CORPORATION
    Inventors: Hiroyuki Nagai, Takayuki Ishikawa, Shinichiro Mizoguchi, Riyako Iwahashi, Shinji Nakamura
  • Patent number: 9267741
    Abstract: A heat exchanger has at least one inlet and outlet to permit circulation of refrigerant therethrough. Each heat exchanger includes a plurality of thin sections of material arranged between a pair of thin flat outer plates. Each of the thin sections of material is comprised of parallel flow paths, allowing for the refrigerant to flow through the inlet, then from one section to the next, and finally out the outlet. The arrangement of the sections of parallel flow paths allows for the refrigerant to come into contact with the majority of the inside wall of the outer plates, allowing for maximum heat exchange. In use for cooling liquids, the heat exchangers are arranged within a frame and brought into contact with the liquid to be cooled. When the heat exchangers are used to cool liquid sufficiently to produce ice crystals, a rotating scraping device sweeps across the surface of the heat exchanger, removing any ice crystals that have formed.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: February 23, 2016
    Assignee: ICEGEN PATENT CORP.
    Inventor: Mikhail Mogilevsky
  • Patent number: 9188373
    Abstract: A heat activated (preferably natural gas, propane, solar or waste heat fired) absorption heat pump water heater and heat exchange system. The heat driven absorption heat pump system extracts low grade heat from the ambient air and produces high grade heat suitable for heating water for domestic, climate control or process purposes in a storage tank. Flue gases exiting the absorption heat pump system are further cooled by the heated water to enable high (condensing) combustion efficiencies. The heat activated heat pump water heating system achieves COP of 1.5 or greater.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: November 17, 2015
    Assignee: Stone Mountain Technologies, Inc.
    Inventor: Michael A. Garrabrant
  • Patent number: 9157654
    Abstract: A heat pump system includes a heat pump circuit, a heat load circuit, first and second heat exchangers, a flow rate regulation mechanism and a controller. A first passage connects branching and converging portions of the heat load circuit. A second passage connects the branching and converging portions without converging with the first passage. The first and second heat exchanger perform heat exchange between discharge refrigerant from the low and high stage compression mechanisms and fluid in the first and second passages, respectively. The flow rate regulation mechanism regulates a ratio between flow rates through the first and second passages. The controller controls the flow rate regulation mechanism so that the fluid is allowed to flow to the first heat exchanger when a temperature of refrigerant flowing into the first heat exchanger is lower than a heating target temperature of converged fluid flowing through the heat load circuit.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: October 13, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroshi Nakayama, Shuji Fujimoto
  • Patent number: 9140459
    Abstract: A heat pump device heats a second heat medium to a high temperature with high efficiency by using a secondary-loop refrigeration cycle while achieving a cooling operation and a heating operation simultaneously in a state where reliability and efficiency are ensured. In a heat pump device, a heat medium relay unit and a water heating unit are each provided with two connection ports that are connectable to refrigerant pipes, a refrigerant circuit and a refrigerant circuit are connected to each other via a heat exchanger included in the water heating unit, and a second heat medium is heated in a heat exchanger.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 22, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Morimoto, Koji Yamashita
  • Patent number: 9121631
    Abstract: An air conditioner and a method of operating an air conditioner are provided. The air conditioner may include at least one indoor device having an indoor heat exchanger that evaporates or condenses a refrigerant by heat exchange with indoor air; at least one outdoor device having a variable capacity compression device that sucks in and compresses a refrigerant of a refrigerant intake passage and discharges the refrigerant to a refrigerant discharge passage, a water-refrigerant heat exchanger that condenses or evaporates a refrigerant by heat exchange with heat source water, and an outdoor expansion device installed between the indoor heat exchanger of the at least one indoor device and the water-refrigerant heat exchanger; a heat source water flow path connected to the water-refrigerant heat exchanger; a pump installed on the heat source water flow path; and a variable flow valve installed on the heat source water flow path.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 1, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Changhwan Cho, Hongseok Choi, Sunyoung Kang, Junhyeon Hwang
  • Publication number: 20150121930
    Abstract: The heating capacity particularly at low outside air temperatures in a vehicular air-conditioning unit that heats the vehicle interior by heat pump operation of a refrigerant circuit using a compressor is improved. During heating, a refrigerant discharged from a compressor 2 releases heat in a radiator 4 into the vehicle interior, and the refrigerant decompressed after the heat release in the radiator evaporates in at least one of an external heat exchanger 7 and a ventilation heat exchanger 24. During cooling, the refrigerant discharged from the compressor releases heat in the external heat exchanger, and the refrigerant decompressed after the heat release in the external heat exchanger evaporates in an internal heat exchanger 9 to absorb heat from the vehicle interior.
    Type: Application
    Filed: June 12, 2013
    Publication date: May 7, 2015
    Inventor: Junichiro Kasuya
  • Patent number: 9016074
    Abstract: A system and method for heating water are provided. The system includes a first subcooler for receiving a first water flow, a second subcooler for receiving a second water flow, a first condenser in fluid communication with the first subcooler and the second subcooler for receiving water from both subcoolers, and a second condenser in fluid communication with the first condenser. The method involves receiving a flow of water, and transferring heat to the water using the system.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 28, 2015
    Assignee: Energy Recovery Systems Inc.
    Inventor: Sean Douglas Marte
  • Publication number: 20150096322
    Abstract: A machine for the thermal treatment of liquid and semi-liquid food products comprises: at least two tanks (3A,3B) for containing respective products to be subjected to the thermal treatment, at least one dispenser (4) for dispensing the product contained in said tanks (3A,3B), at least one stirrer (5) mounted inside each tank (3A,3B) for mixing the product contained therein, thermal treatment means (6) operatively acting on the products contained in the containers (3A,3B); the machine (1) being characterized in that the thermal treatment means (6) comprise at least one circuit (7) for circulation of an operating fluid and at least two first heat exchangers (8A,8B) operating according to a thermodynamic cycle; each of the two first heat exchangers (8A,8B) being associated with a respective tank (3A,3B); said thermal treatment means (6) being configured in such a way as to implement at least one operating mode of removing heat from the respective tank (3A,3B) by means of one first heat exchanger (8A) and simult
    Type: Application
    Filed: September 24, 2014
    Publication date: April 9, 2015
    Inventors: Andrea Cocchi, Roberto Lazzarini
  • Patent number: 8997510
    Abstract: A solar powered compressor and pump is disclosed having a trough-shaped parabolic reflector for heating a conduit of refrigerant as it passes through the system. The compressor/pump combination includes a lens that covers the reflector and insulates and protects the reflector from the elements while increasing the intensity of the sun's energy entering the reflector. The reflector converts the sun's energy into heat that superheats the refrigerant as it passes through the reflector, reducing or eliminating the amount of mechanical work that the system has to do to achieve the needed superheating stage.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: April 7, 2015
    Inventor: Craig McKenzie
  • Publication number: 20150089967
    Abstract: A heat pump system includes air conditioning devices to adjust operations of cooling and heating a vehicle interior by circulating a refrigerant in accordance with a heating mode and a cooling mode of an electric vehicle, includes an outdoor condenser configured to condense the refrigerant, an expansion valve configured to expand the refrigerant condensed by the outdoor condenser, an evaporator configured to evaporate the refrigerant expanded by the expansion valve, a compressor configured to compress the refrigerant evaporated by the evaporator, and an indoor condenser configured to primarily condense the refrigerant compressed by the compressor and connected to the outdoor condenser. The heat pump system may further include: a radiator connected to electronic equipment; a chiller configured integrally with the radiator; first connecting piping connecting the refrigerant piping and the chiller; and second connecting piping connecting the refrigerant from the chiller to the refrigerant piping.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 2, 2015
    Applicant: Hyundai Motor Company
    Inventors: Young Jun Kim, Kilwoo Lee
  • Patent number: 8991204
    Abstract: A refrigerating apparatus including a first refrigeration cycle circuit having a first compressor, a first radiator, a supercooler, a first pressure-reducing device and an evaporator that are connected through a refrigerant pipe, a second refrigeration cycle circuit having a second compressor, a second radiator, a second pressure-reducing device and the supercooler that are connected through a refrigerant pipe, a refrigeration unit in which the first compressor and the first radiator are mounted, a showcase in which the first pressure-reducing device and the evaporator are mounted, a supercooling hot water supply device in which the second compressor, the second radiator, the second pressure-reducing device and the supercooler are mounted, and a hot-water stock device having a hot water supply tank that is connected to the second radiator of the supercooling hot water supply device through a second radiator.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 31, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masahisa Otake, Hidetaka Sasaki, Setsu Hasegawa, Ken Kawakubo, Kazuhiko Mihara
  • Publication number: 20150082820
    Abstract: An vehicle air conditioner (1A) includes a duct (3) in which a partition member (4) forming a first flow path (3A) and a second flow path (3B) is provided, and a heat pump circuit (2A). In the heat pump circuit (2A), a first indoor heat exchanger (12A) that contributes mainly to heating is located in the first flow path (3A) or faces an outlet of the first flow path (3A), and a second indoor heat exchanger (12B) that contributes mainly to cooling is located in the second flow path (3B). The ratio between an internal air and an external air within air flowing through each of the first flow path (3A) and the second flow path (3B) is adjustable. The duct (3) is provided with at least one of a heating exhaust port (35) for discharging air cooled in the second indoor heat exchanger (12B) to the outside of the vehicle interior in heating operation, and a cooling exhaust port (36) for discharging air heated in the first indoor heat exchanger (12A) to the outside of the vehicle interior in cooling operation.
    Type: Application
    Filed: March 9, 2012
    Publication date: March 26, 2015
    Applicant: PANASONIC CORPORATION
    Inventor: Yasufumi Takahashi
  • Publication number: 20150068228
    Abstract: A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Holger SEDLAK, Oliver KNIFFLER
  • Publication number: 20150059371
    Abstract: A refrigeration system including a suction line heat exchanger having a first conduit including a refrigerant liquid which flows inside of the first conduit from the condenser to the evaporator. Also the refrigeration system includes a second conduit in thermal communication with the first conduit and includes a refrigerant fluid, typically a vapor, which flows inside of the second conduit in an opposite direction of flow from the first conduit from the evaporator to the compressor. Additionally, at least one heating device is in thermal communication with at least one of the first conduit and second conduit and is configured to communicate with a refrigeration control system to apply heat along a portion of both the first conduit and the second conduit adjacent to the heating device thereby regulating the flow rate of the refrigerant liquid in the first conduit and the second conduit.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 5, 2015
    Applicant: Whirlpool Corporation
    Inventor: GUOLIAN WU
  • Publication number: 20150059382
    Abstract: This vehicle air-conditioning device has a compressor; an outside heat exchanger; a water-to-refrigerant heat exchanger; a heat release unit; a circulation means; and an air passage through which air is blown into a vehicle interior and in which the heat release unit is disposed midway, a send-out port for sending out the compressed refrigerant and an introduction port for introducing the refrigerant that has not been compressed being provided in the compressor, a first fit part that is fitted in the send-out port of the compressor, and a second fit part that is fitted in the introduction port of the compressor being provided in the water-to-refrigerant heat exchanger, and the compressor and the water-to-refrigerant heat exchanger being integrally joined by the first fit part and the second fit part being fitted.
    Type: Application
    Filed: March 25, 2013
    Publication date: March 5, 2015
    Inventors: Yoshitoshi Noda, Katsuji Taniguchi, Tomohiro Terada
  • Publication number: 20150059379
    Abstract: Feedwater to be supplied to a feedwater tank via a feedwater path is passed through a waste heat recovery heat exchanger, a supercooler, and a condenser in sequence. A heat source fluid such as heat source water is passed through an evaporator and the waste heat recovery heat exchanger in sequence. The waste heat recovery heat exchanger is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and the heat source fluid having passed through the evaporator. The supercooler is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and a refrigerant supplied from the condenser to an expansion valve.
    Type: Application
    Filed: November 6, 2012
    Publication date: March 5, 2015
    Inventors: Kazuyuki Ootani, Yasukuni Tanaka, Masanori Takemoto, Rikki Sugiura, Tomoya Oozawa