Plural Paired Different Function Refrigeration Producing Elements, E.g., Cascade Patents (Class 62/335)
  • Patent number: 10508845
    Abstract: A refrigeration cycle system includes: a first refrigeration cycle apparatus which is connected to a first compressor, a first condenser, a first pressure reduction device, and a first evaporator and through which the refrigerant circulates; a second refrigeration cycle apparatus which is connected to a second compressor, a second condenser, and a second pressure reduction device, and a second evaporator; a first bypass passage connecting a portion between the first evaporator and the first compressor to a portion between the second evaporator and the second compressor; and a second bypass passage connecting a portion between the first condenser and the first pressure reduction device to a portion between the second condenser and the second pressure reduction device.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: December 17, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takao Nagae, Ryo Oya
  • Patent number: 10443927
    Abstract: Processes and systems are provided for recovering a liquid natural gas (“LNG”) from a hydrocarbon-containing gas. More particularly, the present invention is generally related to processes and systems that optimize the chilling efficiencies of an LNG facility through the utilization of an auxiliary refrigeration cycle. Additionally, the present invention is also generally related to the rerouting of mixed refrigerants in a closed-loop refrigeration cycle in order to optimize the chilling efficiencies of the LNG facility.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 15, 2019
    Assignee: Black & Veatch Holding Company
    Inventors: Jason M. Manning, Justin Ellrich, Shawn D. Hoffart
  • Patent number: 10436494
    Abstract: A refrigerator according to an embodiment of the present invention includes a cabinet in which a storage space is formed; a main evaporator which is installed at one side of an inner portion of the storage space to cool the storage space; a case which is installed on the other side of the inner portion of the storage space and defines a deep-freezing storage chamber; a drawer which is accommodated in the case so as to be retractable and withdrawable and in which food is stored; and a rapid cooling module which is provided on a rear side of the inner portion of the case and rapidly cools the deep-freezing storage chamber, in which the rapid cooling module includes an auxiliary evaporator in which a low-temperature and low-pressure two-phase refrigerant flow, and a thermoelectric device which is installed so that an exothermic surface is attached to the surface of the auxiliary evaporator and an endothermic surface faces the drawer, thereby cooling the deep-freezing storage chamber.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 8, 2019
    Assignee: LG Electronics Inc.
    Inventors: Seongjae Kim, Seunghwan Oh, Heayoun Sul
  • Patent number: 10393432
    Abstract: Systems and methods of CO2 desublimation are presented in which refrigeration content is retained within the system. Most preferably, refrigeration content is recycled by providing the refrigeration content of a CO2-lean feed gas to the CO2-containing feed gas and to pre-cooling of a desublimator, and/or by providing refrigeration of effluent of a desublimator in regeneration to a refrigerant in a closed refrigeration cycle for deep-cooling of another desublimator.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 27, 2019
    Assignee: Fluor Technologies Corporation
    Inventors: Satish Reddy, Joseph Yonkoski, Paul M. Mathias
  • Patent number: 10161675
    Abstract: A natural gas liquefaction system includes a piping rack for supporting a raw material gas transporting pipe for transporting the raw material gas; a pre-cooling heat exchanger for pre-cooling the raw material gas with a first refrigerant; a first refrigerant compressor for compressing the first refrigerant; a plurality of first air-cooled heat exchangers disposed on a top of the piping; a liquefier for liquefying the raw material gas which has been cooled by the pre-cooling heat exchanger, wherein the piping rack has a widened section along a part of a length of the piping rack, wherein the pre-cooling heat exchanger and the first refrigerant compressor are disposed on either side of the widened section of the piping rack, and are connected to each other via a first refrigerant transporting pipe extending in a direction intersecting a lengthwise direction of the piping rack for transporting the first refrigerant.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: December 25, 2018
    Assignee: CHIYODA CORPORATION
    Inventors: Kenichi Kobayashi, Yasuhiro Yoda, Toshiya Momose, Takamasa Oba
  • Patent number: 10151522
    Abstract: A microchannel condenser includes a first header, the first header including a body defining an interior and further defining an inlet bore and a first outlet bore, and a second header spaced apart from the first header, the second header including a body defining an interior and further defining a second outlet bore. The microchannel condenser further includes a conduit in fluid communication with the second outlet bore. The microchannel condenser further includes a plurality of tubes extending between the first header and the second header, each of the plurality of tubes defining a plurality of microchannels, each of the plurality of microchannels in fluid communication with the interior of the first header and the interior of the second header, each of the plurality of microchannels having a maximum cross-sectional width of less than or equal to 5 millimeters.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 11, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Brent Alden Junge, Michael John Kempiak
  • Patent number: 10082325
    Abstract: A refrigerating apparatus includes: a refrigerating circuit in which a refrigerant that is discharged from a compressor is conveyed under pressure sequentially to a first flow rate controlling apparatus, a heat storing tank, a condenser, a first decompressing apparatus, and an evaporator, and is recycled to the compressor; a defrosting circuit in which the refrigerant that is discharged from the compressor is conveyed under pressure sequentially to the first flow rate controlling apparatus, the heat storing tank, the first decompressing apparatus, and the evaporator, and is recycled to the compressor; and a flow channel switching apparatus that connects an outlet side of the heat storing tank to an inlet side of the condenser or to an inlet side of the first decompressing apparatus to form the refrigerating circuit or the defrosting circuit.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: September 25, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Makoto Saito, Fumitake Unezaki
  • Patent number: 10072876
    Abstract: A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor that is a variable speed compressor, a second expansion device, and an evaporator. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. A controller stages operation of the first and second compressors and runs the second compressor at an initial speed less than a maximum speed initially when a staging protocol is performed during start up or re-starting of the refrigeration system.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: September 11, 2018
    Assignee: Thermo Fisher Scientific (Asheville) LLC
    Inventors: Qi Wang, Todd Swift, Richard H. Bair, III
  • Patent number: 9909790
    Abstract: An integrated air conditioning system having a first air conditioning unit having a first evaporator with a first input and a first output; a second air conditioning unit having a second evaporator with a second input and a second output; a first conduit fluidly connecting the first input with the second output; a second conduit fluidly connecting the second input with the first output. The first and second conduits and the first and second evaporators form a working fluid circuit.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: March 6, 2018
    Assignee: CARRIER CORPORATION
    Inventors: Batung Pham, Pierre Delpech, Philippe Rigal
  • Patent number: 9845981
    Abstract: A cooling system has a direct expansion mode and a pumped refrigerant economizer mode and a controller. The controller includes a load estimator that estimates real-time indoor load on the cooling system and uses the estimated real-time indoor load to determine whether to operate the cooling system in the pumped refrigerant economizer mode or in the direct expansion mode.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: December 19, 2017
    Assignee: Liebert Corporation
    Inventors: Zongtao Lu, Greg Haggy, Timothy J. Schrader, Stephen Sillato, John F. Judge
  • Patent number: 9835360
    Abstract: A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device that is in fluid communication with the first fluid circuit. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor, a second expansion device, and an evaporator that is in fluid communication with the second fluid circuit. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. At least one of the first or second compressors is a variable speed compressor.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: December 5, 2017
    Assignee: Thermo Fisher Scientific (Asheville) LLC
    Inventors: Qi Wang, Todd Swift, Richard Bair
  • Patent number: 9772129
    Abstract: An ammonia plant system upgrade utilizing both a direct and indirect multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of an existing ammonia plant as well as upgrades to provide more pre-heating along with increased process air flow.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: September 26, 2017
    Inventor: Vinod Kumar Arora
  • Patent number: 9599395
    Abstract: A refrigerating apparatus includes a high temperature side first cycle; a high temperature side second cycle; a low temperature side cycle in which carbon dioxide is used as a refrigerant; a first cascade condenser and a second cascade condenser, which each exchange heat between a high temperature side refrigerant and a low temperature side refrigerant; and a control unit lowering an evaporation temperature of a high temperature side evaporator in correspondence to the flow of the low temperature side refrigerant.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: March 21, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tetsuya Yamashita, Takeshi Sugimoto, Takashi Ikeda
  • Patent number: 9593872
    Abstract: A heat pump capable of operating in a high COP state even if influx temperature of a medium to be heated flowing into the radiators has increased. The heat pump includes a compressor, a first radiator, a second radiator, an expansion valve, and an evaporator sequentially connected by refrigerant piping to form a first refrigeration cycle, in which a first refrigerant circulates in the first refrigeration cycle, and in which the first radiator and the second radiator are serially connected. A first heat exchange unit that heats the first refrigerant is provided in a refrigerant piping at a refrigerant inlet side of the second radiator, and a second heat exchange unit that cools the first refrigerant is provided in a refrigerant piping at a refrigerant outlet side of the second radiator.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 14, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naofumi Takenaka, Shinichi Wakamoto, Koji Yamashita, Hiroyuki Morimoto, Takeshi Hatomura, Yusuke Shimazu
  • Patent number: 9557080
    Abstract: A refrigeration cycle apparatus (1A) includes: a main circuit (2) composed of an evaporator (25), a first compressor (21), an intercooler (8), a second compressor (22), and a condenser (23) which are connected in this order; and an evaporation-side circulation path (5) that allows a refrigerant liquid retained in the evaporator (25) to circulate via a heat exchanger for heat absorption (6). The intercooler (8) is a heat exchanger that allows a refrigerant vapor compressed by the first compressor (21) to be cooled by the refrigerant liquid. A supply path (71) supplies, to the intercooler (8), a portion of the refrigerant liquid flowing in the first circulation path (5), and a recovery path (73) recovers the refrigerant liquid from the intercooler (8) to the evaporator (25).
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: January 31, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Matsuura, Tomoichiro Tamura, Bunki Kawano
  • Patent number: 9551335
    Abstract: A method for coordinating operation between at least two groups of compressors in a cooling circuit is disclosed. A first group of compressors forms part of a low temperature (LT) part of the cooling circuit and a second group of compressors forms part of a high temperature (MT) part of the cooling circuit. Each of the compressor groups comprises one or more compressors, and each of the compressor groups comprises a controller, the controllers being capable of exchanging signals. In the case that the LT compressor group needs one or more of the LT compressors to start operation, it is investigated whether or not one or more of the MT compressors is/are operating. If this is the case, one or more of the LT compressors is/are allowed to start operation. If it is not the case, the suction pressure in the MT part of the cooling circuit is established, e.g.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: January 24, 2017
    Assignee: Danfoss A/S
    Inventor: Jan Prins
  • Patent number: 9339752
    Abstract: Systems and methods of CO2 desublimation are presented in which refrigeration content is retained within the system. Most preferably, refrigeration content is recycled by providing the refrigeration content of a CO2-lean feed gas to the CO2-containing feed gas and to pre-cooling of a desublimator, and/or by providing refrigeration of effluent of a desublimator in regeneration to a refrigerant in a closed refrigeration cycle for deep-cooling of another desublimator.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: May 17, 2016
    Assignee: Fluor Technologies Corporation
    Inventors: Satish Reddy, Joseph Yonkoski, Paul Mathias
  • Patent number: 9316424
    Abstract: A cooling system has a plurality of separate cooling stages including an upstream cooling stage having an upstream cooling circuit and a downstream cooling stage including a downstream cooling circuit, which are each a direct expansion cooling circuit including a tandem compressor. Each tandem compressor includes a fixed capacity compressor and a variable capacity compressor. A controller controls the fixed capacity compressor and variable capacity compressor of each tandem compressor based on a Call for Cooling, which of a plurality of ranges the Call for Cooling falls within, and whether the Call for Cooling is ramping up or ramping down.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 19, 2016
    Assignee: Liebert Corporation
    Inventors: Zhiyong Lin, Roger Noll, John F. Judge, Gary A. Helmink, Benedict J. Dolcich, Daniel J. Schutte, Timothy J. Schrader
  • Patent number: 9297558
    Abstract: A refrigerating system including an air conditioning system and a cooler system is provided. An air conditioner-side refrigerant passage may be connected to a cooler-side refrigerant passage to allow refrigerant to flow between the air conditioning system and the cooler system. Thus, if a cooler-side compressor experiences abnormal operation, cooler-side refrigerant may be compressed by an air conditioner-side compressor so as to maintain cooling performance of the refrigerating system.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: March 29, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Jae Heuk Choi, Yoon Ho Yoo, Do Yong Ha, Baik Young Chung
  • Publication number: 20150143836
    Abstract: A device is provided for a refrigeration system that separates liquid and vapor phases of the refrigerant while also drying the liquid phase to remove water. The phase separator and drier are provided integrally as part of the same device. The device can be used with e.g., dual evaporator refrigeration systems and both single and multi-component refrigerants. Improved efficiencies in space and plumbing so as to reduce costs can be achieved.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventor: Brent Alden Junge
  • Patent number: 9032747
    Abstract: Obtained is an air-conditioning apparatus that is capable of saving energy. A pressure in a passage of the second refrigerant flow switching device in which a refrigerant from an outdoor unit flows into is higher than a pressure in a passage of the second refrigerant flow switching device in which the refrigerant flows out to the outdoor unit regardless of switching states of a first refrigerant flow switching device, the second refrigerant flow switching devices, and a third refrigerant flow switching device.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 19, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Yuji Motomura, Takeshi Hatomura
  • Patent number: 9027359
    Abstract: A modular heat exchange system having a refrigerant system for cycling a refrigerant through a compressor, a condenser, an expansion valve, and an evaporator, a heat source circulation system which circulates a heat exchange fluid between a heat source and the evaporator, a heat sink circulation system which circulates a heat absorption fluid between a heat sink and the condenser, a fluid management system having temperature gauges for respectively reading core temperatures of the heat source and the heat sink, and a thermal energy source from which thermal energy is transferred to the heat exchange fluid when the core temperature of the heat source falls below a threshold temperature while the core temperature of the heat sink is maintained at a constant temperature.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: May 12, 2015
    Assignee: Triea Technologies, LLC
    Inventors: James O'Brien, Matthew Ginalick, Jr.
  • Publication number: 20150121940
    Abstract: Provided is a refrigeration cycle of a refrigerator. The refrigeration cycle of a refrigerator including a first refrigeration cycle in which a first refrigerant flows along a first refrigerant tube and a second refrigeration cycle in which a second refrigerant flows along a second refrigerant tube includes first and second compressors compressing each of the first and second refrigerants into a high-temperature high-pressure gaseous refrigerant, a combined condenser condensing each of the first and second refrigerants passing through the first and second compressors into a high-temperature high-pressure liquid refrigerant, first and second expansion valves phase-changing each of the first and second refrigerants passing through the combined condenser into a low-temperature low-pressure two-phase refrigerant, and first and second evaporators changing the refrigerant passing through each of the first and second expansion valves into a low-temperature low-pressure gaseous refrigerant.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 7, 2015
    Inventors: TAEHEE LEE, DONGSEOK KIM
  • Patent number: 9003823
    Abstract: A configuration provided with a heat source unit A, an indoor unit B, a circuit D for a hot-water supply heat source provided with a refrigerant-refrigerant heat exchanger and throttle for the hot-water supply heat source, and a branch unit C that distributes a refrigerant flowing through the indoor unit and the circuit for hot-water supply heat source and also provided with a refrigerating cycle for air conditioning in which the indoor unit and the circuit for hot-water supply heat source are connected in parallel and connected to the heat source unit by at least two connection pipelines via the branch unit and a refrigerating cycle for hot-water supply in which a compressor for hot-water supply, a heat-medium-refrigerant heat exchanger, throttle for hot-water supply, and the refrigerant-refrigerant heat exchanger are connected in series, in which the refrigerating cycle for air conditioning and the refrigerating cycle for hot-water supply are connected so as to exchange heat between the refrigerant for air
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: April 14, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kosuke Tanaka, Junichi Kameyama, Hirofumi Koge, Hironori Yabuuchi
  • 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
  • Patent number: 8959938
    Abstract: A cooling system includes an evaporator for evaporating a refrigerant to cool an object to be cooled; a refrigerant-supply-flow-rate regulator for regulating a flow rate of the refrigerant to be supplied to the evaporator; a condenser for condensing the refrigerant by cooling the refrigerant by use of a chilled fluid; and a chilled-fluid-flow-rate regulator for regulating a flow rate of the chilled fluid to be supplied to the condenser, the refrigerant condensed by the condenser being to be pressurized to be supplied to the evaporator. The chilled-fluid-flow-rate regulator regulates a flow rate of the fluid, to be supplied to the evaporator, for a temperature of the refrigerant condensed to come to a predetermined target refrigerant-liquid temperature, and the refrigerant-supply-flow-rate regulator regulates a flow rate of the refrigerant, to be supplied to the evaporator, for a temperature of the object cooled to come to a predetermined target cooling temperature.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: February 24, 2015
    Assignee: Hitachi Ltd.
    Inventors: Junichi Ito, Yasuhiro Kashirajima, Yasuhiko Inadomi, Tomohiro Yoshida
  • Publication number: 20150027147
    Abstract: A high-efficiency air conditioning system for conditioning a plurality of zones within an interior of a building that includes: at least two independent ductwork systems within a building wherein each independent ductwork system directs heating and cooling to one zone within the building; a single outdoor unit a refrigerant flow pathway having a common refrigerant flow path portion, a first divergent flow path, and a second divergent flow path; at least one throttling device and at least a first indoor air handling unit providing cooling to a first independent ductwork system and a second indoor air handling unit providing cooling to a second indoor ductwork system. The compressor is incapable of simultaneously supplying both the first evaporator and the second evaporator at their full cooling capacity.
    Type: Application
    Filed: April 30, 2014
    Publication date: January 29, 2015
    Applicant: WHIRLPOOL CORPORATION
    Inventors: NIHAT O. CUR, TIMOTHY A. KEE, JAMES W. KENDALL, Steven J. Kuehl, JEFFREY A. MILLER, VERNE H. MYERS, GUOLIAN WU
  • Patent number: 8936071
    Abstract: An aircraft cooling system includes a refrigerant cycle including a first heat exchanger. A liquid cycle passes a liquid through the first heat exchanger, at which it is cooled by a refrigerant in the refrigerant cycle. An air cycle compresses air and delivers the compressed air into a second heat exchanger. The liquid passes through the second heat exchanger at a location downstream of the first heat exchanger. The liquid cools the air in the second heat exchanger. Air downstream of the second heat exchanger passes to be utilized by a use on an aircraft.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: January 20, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Louis J. Bruno, Douglas L. Christians
  • Patent number: 8925346
    Abstract: A high performance freezer includes a deck and a cabinet supported above the deck and having a cabinet housing defining a generally cylindrical shape. The freezer includes a door supported by the cabinet housing that moves between open and closed positions by sliding or pivoting generally along the side wall of the cabinet. The freezer further includes a refrigeration system mounted at least partially within the deck and partially within the cabinet to refrigerate an inner chamber of the freezer. The cylindrical shape of the cabinet enables rotation of shelves within the inner chamber and a maximized storage space with a minimal floor space required.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: January 6, 2015
    Assignee: Thermo Fisher Scientific (Asheville) LLC
    Inventors: Mahesh Natarajan, Tushar Ingle, Rajendra Khadatkar
  • Patent number: 8904815
    Abstract: A heating installation is provided with a first circuit (K1) containing a first medium, a second circuit (K2) containing a second medium, a first heat pump (2) arranged in the first circuit (K1) for heating the first medium, a third circuit (K3) containing a third medium, a heat exchanger (40) arranged in the third circuit (K3) and connected between the condenser (2d) and expansion valve (2f) of the first heat pump to transfer heat from the working medium of the first heat pump to the third medium in the third circuit (K3), and a second heat pump (3) arranged for heating the second medium in the second circuit (K2) by absorbing heat energy from the third medium in the third circuit (K3).
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: December 9, 2014
    Assignee: Energy Machines S.A.
    Inventor: Hans-Göran Göransson
  • Patent number: 8844308
    Abstract: A refrigeration system includes a first portion having a primary loop and a secondary loop operably coupled by a first chiller, The primary loop circulates a refrigerant through the first chiller to provide cooling to a coolant in the secondary loop. The secondary loop has a supply portion and a return portion, the supply portion circulates the coolant to one or more temperature-controlled storage devices operating at a first temperature. A second portion has a primary loop and at least one secondary loop operably coupled by the second chiller. The primary loop circulates a refrigerant through the second chiller to provide cooling to coolant in the secondary loop. The secondary loop has a supply portion and a return portion, the supply portion circulates the coolant to one or more temperature-controlled storage devices operating at a second temperature. The return portion of the secondary loop of the first portion and the return portion of the secondary loop of the second portion share a common return header.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 30, 2014
    Assignee: Hill Phoenix, Inc.
    Inventors: Jon Scott Martin, Nicholas D. Shockley
  • Publication number: 20140260403
    Abstract: A vehicle air conditioning system is provided. The vehicle air conditioning system includes a first vapor compression refrigeration loop. The first vapor compression refrigeration loop includes a first refrigerant compressor and a first evaporator. The vehicle air conditioning system further includes a tank for holding a compressed fluid, an outlet configured to carry expanded fluid from the tank, and a heat exchanger thermally coupled to the first vapor compression refrigeration loop and to the outlet. The heat exchanger is configured to transfer heat from refrigerant carried by the first vapor compression refrigeration loop to fluid carried by the outlet, where the temperature of the fluid carried by the outlet has been reduced as a result of expansion of the fluid upon exiting the tank.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Bergstrom, Inc.
    Inventor: Brett Sean Connell
  • Publication number: 20140260405
    Abstract: When a first temperature difference is the difference between an inlet temperature of a first refrigerant and an outlet temperature of the first refrigerant in the heat exchanger for heating, and a second temperature difference is the difference between an inlet temperature of a second refrigerant and an outlet temperature of the second refrigerant in the heat exchanger for heating, the difference between the first temperature difference and the second temperature difference is held in a predetermined value or less by controlling the opening degree of a second expansion device.
    Type: Application
    Filed: January 24, 2012
    Publication date: September 18, 2014
    Applicant: Mitsubshi Electric Corporation
    Inventor: Koji Yamashita
  • Publication number: 20140260340
    Abstract: A cooling system for an aircraft includes a first cooling circuit having a first evaporator and a second evaporator, and a second cooling circuit having a third evaporator and a fourth evaporator. One of the first and second cooling circuits includes a first set of valves arranged to direct refrigerant through a first cooling sub-circuit, a second cooling sub-circuit, or both the first and second cooling sub-circuits based on ambient conditions. Two of the evaporators are installed on a first side of the aircraft, and the other two of the four evaporators are installed on a second side of the aircraft opposite the first side, and the first and second cooling circuits reject heat, via a heat exchanger, from their respective cooling circuit to air passing into an engine of the aircraft.
    Type: Application
    Filed: December 27, 2013
    Publication date: September 18, 2014
    Applicants: Rolls-Royce North American Technologies, Inc., Rolls-Royce Corporation
    Inventors: Igor Vaisman, Douglas J. Snyder, Patrick C. Sweeney
  • Patent number: 8826686
    Abstract: There is disclosed a refrigeration apparatus including a cascade heat exchanger and capable of reducing the depth dimension of the apparatus itself without being influenced by the thickness dimension of an insulating material for covering the cascade heat exchanger, so that the apparatus can easily be carried indoors through a usual carrying entrance. In a refrigeration apparatus 1 including a high-temperature-side refrigerant circuit 25 and a low-temperature-side refrigerant-circuit 38, an evaporator 34 of the high-temperature-side refrigerant circuit 25 and a condensing pipe 42 of the low-temperature-side refrigerant circuit 25 constitute a cascade heat exchanger 43, and an evaporation pipe 62 of the low-temperature-side refrigerant circuit 38 is configured to cool a storage chamber 4 constituted in an insulating box body 2 to an extremely low temperature.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: September 9, 2014
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventor: Katsuji Takasugi
  • Publication number: 20140223951
    Abstract: This disclosure relates to an ammonia plant system upgrade utilizing both a direct and indirect multistage chilling system in the ammonia plant air compression train to increase process air flow to the secondary ammonia reformer of the ammonia plant as well as upgrades to provide more heating to the increased process air flow.
    Type: Application
    Filed: August 14, 2013
    Publication date: August 14, 2014
    Inventor: Vinod Kumar Arora
  • Patent number: 8789384
    Abstract: Embodiments of the present invention include a cooling system and method for cooling a computer rack by circulating liquid coolant through different sections of a rack heat exchanger under separately controlled flow and temperature conditions. In a method according to one embodiment, a first liquid coolant is supplied to a first section of an air-to-liquid heat exchanger. A second liquid coolant is supplied to a second section of the air-to-liquid heat exchanger at a different temperature than the first liquid coolant. Airflow is generated through rack-mounted computer components to the first and second sections of the air-to-liquid heat exchanger. The flow rates of the first and second liquid coolants are independently controlled to enforce a target cooling parameter. The independent operation of the first and second fin tube sections allows for the increased use of un-chilled water without sacrificing heat removal objectives.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Eric A. Eckberg, Vinod Kamath, Howard V. Mahaney, Jr., William M. Megarity, Mark E. Steinke
  • Publication number: 20140202177
    Abstract: A cooling system uses a closed circuit cooling tower in series with a chiller to either lower the chiller operating point or completely cool the chill water without use of the chiller, depending on weather conditions. The process and system expands the entire function of the cooling process with a control system design that examines the power consumed by all the devices of the system, the actual load being introduced into the system, water temperatures, and weather conditions, and makes decisions based on performance criteria through the control device's program algorithms.
    Type: Application
    Filed: November 4, 2013
    Publication date: July 24, 2014
    Inventor: Charles Warrener Rush
  • Patent number: 8783053
    Abstract: An evaporative cooling system that can be used to cool fluid and to cool an air supply to a building. The air supply to a cooling tower in a first evaporative system also having a fluid pump and a heat exchange element is cooled by the heat exchange element of a second evaporative cooling system. As a result, the inlet air wet bulb temperature of the primary cooling tower will be reduced, enhancing the cooling capacity of the primary cooling tower.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: July 22, 2014
    Assignee: McNNNAC Energy Services Inc.
    Inventor: Neil McCann
  • Publication number: 20140196480
    Abstract: A first air-conditioning apparatus disposed in a frame mounted on a vehicle is updated to a second air-conditioning apparatus is disposed in the frame. A compressor, an outdoor heat exchanger, pressure reducing means, and an indoor heat exchanger of the first air-conditioning apparatus are removed from the frame. The second air-conditioning apparatus is assembled such that a compressor, an outdoor heat exchanger, pressure reducing means, and an indoor heat exchanger are arranged at predetermined positions in the frame, and the second air-conditioning apparatus is charged with HFC refrigerant. An inverter driving the compressor controls the compressor on the basis of a measured value of at least one of a pressure sensor and an outside air temperature sensor arranged on a discharge side of the compressor such that the amount of refrigerant circulating in the second air-conditioning apparatus is larger than that in the first air-conditioning apparatus.
    Type: Application
    Filed: September 26, 2011
    Publication date: July 17, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shoji Isoda, Shiro Takatani
  • Patent number: 8763407
    Abstract: A heat exchanger bed is formed from a cascade of at least three different magnetocaloric materials with different Curie temperatures, which are arranged in succession by ascending or descending Curie temperature and are preferably isolated from one another by intermediate thermal and/or electrical insulators, the difference in the Curie temperatures of adjacent magnetocaloric materials being 0.5 to 6° C.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: July 1, 2014
    Assignee: BASF SE
    Inventors: Colman Carroll, Olaf Rogge, Bennie Reesink
  • Publication number: 20140165642
    Abstract: According to one embodiment, an apparatus includes a housing, two high-temperature-side refrigeration circuits and two low-temperature-side refrigeration circuits. Each of the high-temperature-side refrigeration circuits is configured to exchange heat with both of the two low-temperature-side refrigeration circuits by cascade heat exchangers. A hot-water pipe letting water or hot water through water-refrigerant heat exchangers of the high-temperature-side refrigeration circuits is provided. When the low-temperature-side refrigeration circuit conducts a defrosting operation of the evaporator, the low-temperature-side refrigeration circuits are controlled in such a way that the low-temperature-side refrigerant circuit releases heat in the cascade heat exchanger.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicant: Toshiba Carrier Corporation
    Inventors: Shun ASARI, Takahiro ZUSHI, Takahisa ENDO
  • Publication number: 20140150475
    Abstract: A thermal energy system comprising a first thermal system in use having a cooling demand, and a heat sink connection system coupled to the first thermal system, the heat sink connection system being adapted to provide selective connection to a plurality of heat sinks for cooling the first thermal system, the heat sink connection system comprising a first heat exchanger system adapted to be coupled to a first remote heat sink containing a working fluid and a second heat exchanger system adapted to be coupled to ambient air as a second heat sink, a fluid loop interconnecting the first thermal system, the first heat exchanger system and the second heat exchanger system, at least one mechanism for selectively altering the order of the first heat exchanger system and the second heat exchanger system in relation to a fluid flow direction around the fluid loop, and a controller for actuating the at least one mechanism. An alternative embodiment has a heating demand and uses heat sources.
    Type: Application
    Filed: March 8, 2012
    Publication date: June 5, 2014
    Applicant: GREENFIELD MASTER IPCO LIMITED
    Inventors: Dmitriy Zaynulin, Graeme Ogilvie, Kevin Stickney, Gregory Davis
  • Patent number: 8739567
    Abstract: A dual evaporator refrigerator appliance includes a compressor, a condenser, a first evaporator, a second evaporator and a separating component coupled to the condenser and an input of the first evaporator and an input of the second evaporator and configured to separate a refrigerant stream received by the condenser into a first refrigerant stream and a second refrigerant stream. The refrigerant stream received by the separating component comprises a zeotropic refrigerant mixture. The first evaporator and the second evaporator are configured to substantially simultaneously receive the first refrigerant stream and the second refrigerant stream, respectively.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: June 3, 2014
    Assignee: General Electric Company
    Inventor: Brent Alden Junge
  • Publication number: 20140130536
    Abstract: A refrigerator having a refrigerating circuit with a compressor, a condenser and two evaporators placed in different compartments of the appliance comprises valve means for alternatively directing refrigerant flow towards one of the evaporators.
    Type: Application
    Filed: August 27, 2013
    Publication date: May 15, 2014
    Applicant: Whirlpool Corporation
    Inventors: CESARE MARIA JOPPOLO, LUCA MOLINAROLI, MATEJ VISEK
  • Patent number: 8713958
    Abstract: A triple-pipeline type first outdoor unit 2 provided with a first compressor 20 and a first outdoor heat exchanger 21, a plurality of indoor units 4A to 4D are provided, a second outdoor unit 3 provided with a second compressor 30, a second outdoor heat exchanger 32, and a second expansion valve 33, the first outdoor unit 2 is provided with a first four-way valve 60 that makes a refrigerant discharge pipe 25 of the first compressor 20 and a high-pressure gas pipe 7 capable of communicating with each other and if all the indoor units 4A to 4D perform a cooling operation at the same time, the first four-way valve 60 shuts off the communication between the refrigerant discharge pipe 25 and the high-pressure gas pipe 7, while a third four-way valve 51 is switched so as to connect a gas pipe 35d to the high-pressure gas pipe 7.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 6, 2014
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Takashi Sekine
  • Patent number: 8713950
    Abstract: In a method of the application, cooling energy is produced by a refrigerating device. The cooling energy produced by the refrigerating device is supplied to at least one cooling station by a cooling circuit, circulating in which is a refrigerant, which upon release of its cooling energy to the at least one cooling station is converted from the liquid to the gaseous state and is then converted back to the liquid state by corresponding pressure- and temperature control in the cooling circuit. Upon transfer of the cooling system to its state of rest, a control value disposed in the cooling circuit is controlled in such a way that a desired operating pressure (??) arises in the cooling circuit downstream of the control valve. Refrigerant cooled by the refrigerating device is received in a reservoir disposed upstream of the control valve in the cooling circuit.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: May 6, 2014
    Assignee: Airbus Operations GmbH
    Inventor: Sebastian Roering
  • Patent number: 8631666
    Abstract: A cascade CO2 refrigeration system includes a medium temperature loop for circulating a medium refrigerant and a low temperature loop for circulating a CO2 refrigerant. The medium temperature loop includes a heat exchanger having a first side and a second side. The first side evaporates the medium temperature refrigerant. The low temperature loop includes a discharge header for circulating the CO2 refrigerant through the second side of the heat exchanger to condense the CO2 refrigerant, a liquid-vapor separator collects liquid CO2 refrigerant and directs vapor CO2 refrigerant to the second side of the heat exchanger. A liquid CO2 supply header receives liquid CO2 refrigerant from the liquid-vapor separator. Medium temperature loads receive liquid CO2 refrigerant from the liquid supply header for use as a liquid coolant at a medium temperature. An expansion device expands liquid CO2 refrigerant from the liquid supply header into a low temperature liquid-vapor mixture for use by the low temperature loads.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: January 21, 2014
    Assignee: Hill Phoenix, Inc.
    Inventors: David K. Hinde, Lin Lan, Shitong Zha, J. Scott Martin, John M. Gallaher
  • Publication number: 20140013790
    Abstract: According to one embodiment, a cascade refrigeration cycle apparatus according to the present embodiment includes a high-temperature-side and a low-temperature-side refrigeration circuits, an inverter and a control section. The high-temperature-side refrigeration circuit includes a first compressor and a cascade heat exchanger. The low-temperature-side refrigeration circuit includes a second compressor and the cascade heat exchanger. The inverter connected to at least one of the compressors. The control section controls the inverter so that a set operating frequency for the first compressor is higher than a set operating frequency for the second compressor when an operation of the apparatus is started.
    Type: Application
    Filed: September 17, 2013
    Publication date: January 16, 2014
    Applicant: TOSHIBA CARRIER CORPORATION
    Inventors: Shun ASARI, Takahiro ZUSHI
  • Patent number: 8616017
    Abstract: A first cycle, in which a first medium is circulated, employs a compressor, a first heat exchanger structured with an air heat exchanger, a second heat exchanger, and a third heat exchanger. A second cycle, in which a second medium is circulated and heat is exchanged with the first medium through the second heat exchanger, employs indoor units, each having a fan. A third cycle, in which the second medium is circulated and heat is exchanged with the first medium through the third heat exchanger, shares the indoor units with the second cycle. Flow path switching valves switch flow paths between the second cycle and third cycle. Before the first heat exchanger is defrosted, a halted indoor unit is filled with the second medium in the third cycle with its fan being halted. The third heat exchanger functions as an evaporator during a defrosting operation.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: December 31, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Shimazu, Keisuke Takayama, Koji Yamashita, Hiroyuki Morimoto, Shinichi Wakamoto