With Lubricant Handling Means Patents (Class 62/468)
  • Patent number: 10532305
    Abstract: An internal oil filter is installed at least partially inside a crankcase and/or an oil sump of a compressor. The internal oil filter can receive oil from an oil pressure regulator and filter the oil via filter media. The received oil radially penetrates through the filter media and flow directly into the oil sump from an outside surface of the filter media. This can eliminate the need of fluid lines connecting an outlet of an oil filter to the oil sump and any sealing mechanism therebetween.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: January 14, 2020
    Assignee: Thermo King Corporation
    Inventor: Daniel Lee Price
  • Patent number: 10527050
    Abstract: In one embodiment, a compressor assembly is provided. The compressor assembly includes a compressor having an inlet, an outlet, and at least one bearing, the compressor configured to compress a first refrigerant. The assembly further includes a lubrication supply conduit fluidly coupled to the compressor and configured to supply a lubricant to the at least one bearing. The lubricant is a second refrigerant.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: January 7, 2020
    Assignee: CARRIER CORPORATION
    Inventor: Vishnu M. Sishtla
  • Patent number: 10451317
    Abstract: A refrigeration cycle device is configured to be selectively switchable between an air-cooling first refrigerant circuit that causes refrigerant to flow out of a liquid-phase refrigerant outlet of a gas-liquid separator, and an air-heating second refrigerant circuit that causes the refrigerant to flow out of a gas-phase refrigerant outlet of the gas-liquid separator. In the refrigeration cycle device, an oil separator is disposed in a refrigerant passage that leads from a heat dissipation device to a first expansion valve. Thus, when the first refrigerant circuit is configured in the refrigeration cycle device, the refrigerant passing through the oil separator is in a single gas phase or in an almost gas phase, so that oil can be easily separated from the refrigerant. Furthermore, when the refrigerant circulates through the first refrigerant circuit, oil can be retained at a position other than the gas-liquid separator.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 22, 2019
    Assignee: DENSO CORPORATION
    Inventor: Masaaki Kawakubo
  • Patent number: 10414241
    Abstract: A refrigeration system may include a compressor, a first heat exchanger, a first working fluid flow path, and a second working fluid flow path. The first heat exchanger receives working fluid discharged from the compressor. The first working fluid flow path may receive working fluid from the first heat exchanger and may include an evaporator and an evaporator control valve that is movable between a first position allowing fluid flow through the evaporator and a second position restricting fluid flow through the evaporator. The second working fluid flow path may receive working fluid from the first heat exchanger and may include a eutectic plate and a plate control valve that is movable between a first position allowing fluid flow through the eutectic plate and a second position restricting fluid flow through the eutectic plate.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 17, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Shawn W. Vehr, Joseph James Rozsnaki, Louis Siefker
  • Patent number: 10087777
    Abstract: A system for cooling lubricant in a turbomachine includes a lubricant circuit for circulating a turbomachine lubricant, an air/oil cooler disposed in thermal communication with the lubricant circuit and configured to cool a turbomachine lubricant in the lubricant circuit by passing air over the air/oil cooler, and a compressor air circuit in fluid communication with the air/oil cooler and configured to supply air from a compressor of the turbomachine to the air/oil cooler. The compressor air circuit can include an expansion section to expand and cool air before effusing air to the air/oil cooler.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 2, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Vincent Lee
  • Patent number: 9909795
    Abstract: In a vehicular air conditioner in which a cooling operation and a heating operation are switched by switching a four-way valve, a pressure accumulator is provided in which a coolant, which is related to an aspiration pressure of a compressor, is accumulated when the compressor is operated, and a differential pressure, which is required for switching the four-way valve, between piston rooms is maintained, and the differential pressure, which is required for switching the four-way valve, is generated between the piston rooms of the four-way valve even after the compressor is stopped.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 6, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Wahei Shingu
  • Patent number: 9851130
    Abstract: A refrigeration system that induces lubricant-liquid refrigerant mixture flow from a flooded or falling film evaporator by means of the lubricant-liquid refrigerant mixture flow adsorbing heat from an electronic component.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: December 26, 2017
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Todd J. Love, Jon P. Hartfield, Benjamin Elias Dingel
  • Patent number: 9732747
    Abstract: An air compression system includes an air compression device and a cooling structure. The air compression device includes a liquid-cooled motor and a compressor. The cooling includes a radiator, a cooler, a first liquid conveying tube, a second liquid conveying tube, a third liquid conveying tube, a fourth liquid conveying tube and a cooling liquid. The radiator interconnects the compressor for cooling a lubricating liquid in the compressor; the first liquid conveying tube interconnects the radiator and the cooler; the second liquid conveying tube interconnects the radiator and the cooler; the third liquid conveying tube interconnects the liquid-cooled motor and the cooler; the fourth liquid conveying tube interconnects the liquid-cooled motor and the cooler; and the cooling liquid is filled into the cooler, so as to reduce the space occupied by the cooling structure.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 15, 2017
    Assignee: FUSHENG INDUSTRIAL CO., LTD.
    Inventors: Feng-Yung Lin, Chih-Chung Chen, Li-Yung Yan
  • Patent number: 9631544
    Abstract: A cooling system includes: a compressor; a first condenser; a cooling portion; a heat exchanger; a first line; a second line; a switching device; and an ejector. The first line forms a vapor compression refrigeration cycle by flowing refrigerant in order of the heat exchanger, the compressor, the first condenser and the cooling portion. The second line forms a heat pipe by circulating refrigerant between the first condenser and the cooling portion. The switching device flows refrigerant through the first line when air conditioning is performed, and flows refrigerant through the second line when air conditioning is stopped. The ejector is configured to, when refrigerant flows from the compressor to the first condenser via the ejector, draw refrigerant from the second line and join the drawn refrigerant into refrigerant from the compressor.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: April 25, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhide Uchida, Yuichi Ohno, Yoshiaki Kawakami
  • Patent number: 9581366
    Abstract: An air conditioner having a first circulation channel which drives a thermodynamic cycle while normally circulating a refrigerant, a second circulation channel which is branched from an outlet of a condenser of the first circulation channel to recover oil from the refrigerant to a compressor and to cause the refrigerant to pass through a supercooling heat exchanger, and a third circulation channel which is directly branched from an evaporator of the first circulation channel to recover oil from the refrigerant and to the compressor and to cause the refrigerant to pass through the supercooling heat exchanger, thereby preventing the wet compression of the compressor to achieve improved reliability of the compressor, and preventing the degradation of heat-exchange performance.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: February 28, 2017
    Assignee: LG ELECTRONICS INC.
    Inventor: Eun Jun Cho
  • Patent number: 9562709
    Abstract: A system may include a compressor, a heat exchanger, an expansion device, a lubricant separator, and a flow path. The compressor includes a compression mechanism. The heat exchanger receives compressed working fluid from the compressor. The expansion device is disposed downstream of the heat exchanger. The lubricant separator receives lubricant and working fluid discharged from the compression mechanism and provides separated lubricant to the compression mechanism. The flow path may receive working fluid from the heat exchanger and may provide working fluid to the heat exchanger. The flow path may extend between a first location disposed between the heat exchanger and the expansion device and a second location disposed between the heat exchanger and the compressor. The working fluid from the flow path may absorb heat from the separated lubricant.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: February 7, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Robert C. Stover, Michael M. Perevozchikov
  • Patent number: 9163864
    Abstract: In an air-conditioning apparatus that uses a refrigerant, which operates in a transcritical cycle, and refrigerating machine oil, which has low miscibility with the refrigerant, in a refrigerant circuit for a refrigeration cycle connected to a compressor, a radiator, an expansion mechanism, and an evaporator, the air-conditioning apparatus includes a flow regulating mechanism provided in the refrigerant circuit, and controller that controls the flow regulating mechanism. If a refrigerant flow velocity at an outlet side of the radiator is lower than a predetermined threshold value, the refrigerant flow velocity at the outlet side of the radiator is increased by the controller so that oil-return operation that returns the refrigerating machine oil discharged from the compressor to the compressor is performed for at least a predetermined time period.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 20, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Shimazu, Keisuke Takayama, Takeshi Hatomura
  • Patent number: 9150770
    Abstract: A chiller apparatus containing a composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: October 6, 2015
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Konstantinos Kontomaris, Jeffrey P Knapp, Joshua Hughes
  • Patent number: 9032753
    Abstract: A refrigeration system that induces lubricant-liquid refrigerant mixture flow from a flooded or falling film evaporator by means of the lubricant-liquid refrigerant mixture flow adsorbing heat from an electronic component.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: May 19, 2015
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Todd J. Love, Harry K. Ring, Jon P. Hartfield
  • Patent number: 9032754
    Abstract: A refrigeration system that induces lubricant-liquid refrigerant mixture flow from a flooded or falling film evaporator by means of the lubricant-liquid refrigerant mixture flow adsorbing heat from an electronic component.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 19, 2015
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Todd J. Love, Michael Boehde, Benjamin E. Dingel
  • Patent number: 9028707
    Abstract: A composition comprising a refrigerant and a lubricant is disclosed, wherein the refrigerant comprises (i) a fluorocarbon selected from the group consisting of R125, R134a, R32, R152a, R143a, R218 and mixtures thereof, and (ii) a hydrocarbon selected from the group consisting of propane, n-butane, isobutane, n-pentane, isopentane, dimethyl ether, and mixtures thereof; the lubricant comprises (iii) a hydrocarbon-based lubricant component; and (iv) a synthetic lubricant component; and the synthetic lubricant component is less than 30% by weight of the total lubricant. Also disclosed are methods of replacing refrigerants in refrigeration or air conditioning systems containing a refrigerant comprising a CFC or HCFC and a lubricant.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: May 12, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventor: Barbara Haviland Minor
  • Patent number: 9023231
    Abstract: Non ozone depleting and non flammable refrigerant compositions with GWPs less than 2,000 ITH which replace R404A, R507, HCFC22 and CFC502 in refrigeration systems.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: May 5, 2015
    Assignee: RPL Holdings Limited
    Inventors: John Edward Poole, Richard Powell
  • Publication number: 20150096313
    Abstract: A system off configuration for an automotive climate control system is provided. The climate control system includes a compressor having two downstream flow paths. The two downstream flow paths may be selectively used to provide multiple modes of operation. When the compressor moves to an off condition the valves found in each flow path immediately downstream from the compressor are closed so that a refrigerant oil blend is kept in the compressor.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Franco Ragazzi
  • Publication number: 20150068230
    Abstract: Cooling devices for use with electric submersible pump motors include a refrigerator attached to the end of the electric submersible pump motor with the evaporator heat exchanger accepting all or a portion of the heat load from the motor. The cooling device can be a self-contained bolt-on unit, so that minimal design changes to existing motors are required.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Inventors: Todd A. Jankowski, Dallas D. Hill
  • 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
  • Patent number: 8966915
    Abstract: An air-conditioning apparatus includes an outdoor air temperature sensor detecting an outdoor temperature; a compressor temperature sensor detecting a temperature of an outer wall of a compressor; a liquid-level and concentration detection sensor detecting a liquid surface level in the compressor and a concentration of a lubricant oil in a liquid in the compressor; an electric heater heating the compressor; and a controller that carries out preheating to the compressor by driving the electric heater when a detection value of the outdoor air temperature sensor is higher than or equal to a detection value of the compressor temperature sensor and, further, when the liquid surface level detected by the liquid-level and concentration detection sensor is higher than or equal to a predetermined level and the concentration of the lubricant oil in the liquid is lower than a preset minimum required concentration.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Katsuya Takeuchi, Hirokuni Shiba
  • Publication number: 20150040590
    Abstract: This disclosure relates to a method for operating a combined heat and power device, wherein carbon dioxide as a refrigerant (17) is compressed in a compressor, wherein the carbon dioxide is carried along a refrigerant circuit and routed back to the compressor via a collecting vessel (5). The method is distinguished by the fact that the compressor is lubricated with a lubricant (15) which has a density of more than 1004 g/l, and that a hot gas temperature in the compressor is held below a predetermined value, above which overheating and/or ageing of the lubricant occurs.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 12, 2015
    Inventors: Jan Hinrichs, Tilo Schafer
  • Patent number: 8943854
    Abstract: Disclosed is a heat exchanger of a plate type comprising an evaporator having at least one inlet and at least one outlet allowing a first medium to enter into and exit from the evaporator. The evaporator comprises a plurality of interconnected evaporation chambers disposed in parallel, having at least one common inlet and at least one common outlet allowing the first medium to enter into and exit from the evaporation chambers.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: February 3, 2015
    Assignee: Danfoss Qinbao (Hangzhou) Plate Heat Exchanger Company Limited
    Inventor: Lars Persson
  • Publication number: 20150027146
    Abstract: A composition including 2,3,3,3-tetrafluoropropene and a lubricating oil including a polyalkylene glycol and a polyol ester, the polyol ester content in the lubricating oil being less than or equal to 25%. A method of lubricating a vapor compression circuit, the method including using a mixture including a polyalkylene glycol and a polyol ester as lubricating oil in the vapor compression circuit, in combination with a heat transfer fluid comprising 2,3,3,3-tetrafluoropropene, the content of polyol ester in the lubricating oil being less than or equal to 25%. Further, the use of said composition in methods for heating or cooling.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 29, 2015
    Inventor: Béatrice Boussand
  • Patent number: 8931289
    Abstract: Systems and methods are described with respect to refrigerant recovery techniques. In one example, a system for recovering a refrigerant from an appliance includes a valve module, a separator, a degasser, and a system controller. The valve modules include a valve and a valve controller configured to control the valve and transmit data. The separator separates the refrigerant from an oil and is in fluid communication with the valve. The degasser further separates the refrigerant from the oil and is in fluid communication with the separator. The system controller is configured to receive data from the valve controller.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: January 13, 2015
    Assignee: Appliance Recycling Centers of America, Inc.
    Inventors: Edward R. Cameron, Richard Gordan Christensen, Magalage Neville Perera
  • Patent number: 8931303
    Abstract: A refrigerating air-conditioning apparatus, at least provided with no possibility that a foreign material returns to a compressor from an accumulator at a time of the pipeline-cleaning operation firstly, and provided with a possibility to perform a collecting operation for the foreign material in a short time secondary, is provided. The heat-source side unit includes an accumulator provided with a function to separate and collect the foreign material in an existing pipeline, a collecting container for collecting the foreign material separated by the accumulator, and an oil return pipeline for returning refrigerating machine oil to the compressor via a flow amount adjusting device, installed at a lower portion of the accumulator, and at a time of ordinary cooling or heating operation, the refrigerating machine oil is caused to flow into the oil return pipeline, and at a time of pipeline cleaning and foreign material-collecting operations, the flow amount adjusting device is fully closed.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: January 13, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Toyoshima, Susumu Yoshimura, Shinichi Wakamoto, Osamu Morimoto
  • Publication number: 20150000330
    Abstract: A refrigerating apparatus including a refrigerant circuit forming a refrigeration cycle using an operating refrigerant selected from among R1234yf single refrigerant, R1234yf mixed refrigerant, R1234ze single refrigerant, and R1234ze mixed refrigerant. The refrigerant circuit has a compressor using refrigeration oil including an extreme pressure additive. An environmentally friendly refrigerant is used and an air conditioner exhibiting high cooling efficiency is provided.
    Type: Application
    Filed: June 19, 2014
    Publication date: January 1, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ha Na KIM, Byung Han LIM, Jung Ho KIM, Jin Woo HONG, Dong Suk KIM, Jong Yeop BAEK
  • Publication number: 20140360210
    Abstract: A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 11, 2014
    Inventors: William E. Lapp, Todd W. Smith, Arthur L. Butterworth, Paul J. Sikorsky
  • Patent number: 8904812
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit of a refrigeration cycle through which a refrigerant that transits in a supercritical state is allowed to flow, and a flow dividing device that divides the flow of a high-pressure liquid refrigerant in a subcritical state into two or more parts. The flow dividing device is configured such that the device is oriented substantially in the horizontal direction or substantially upward in the vertical direction relative to the direction of flow of the refrigerant in a liquid state. With such a configuration, the flow of refrigerating machine oil is equally divided, thus offering high energy saving while keeping heat-medium conveyance power at a low level without reducing the heat exchanging performance.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yamashita, Hiroyuki Morimoto, Takeshi Hatomura
  • Patent number: 8899073
    Abstract: A refrigerant storage device that arranges two end plates to form a cavity and includes a turbulator plate within the cavity. The turbulator plate is arranged within the cavity to reinforce the cavity by providing a plurality of reinforcement portions between the end plates. The cavity is sized and the turbulator plate is configured so a liquid portion of refrigerant flowing through the cavity collects onto the turbulator plate. The device has a rectangular shape that simplifies vehicle packaging and allows the device to be readily integrated into a plate-type refrigerant-to-liquid coolant heat exchanger. The device is formed by a stacking arrangement of parts that provides for a readily scalable design.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: December 2, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Gary Scott Vreeland, Frederick Vincent Oddi
  • Publication number: 20140326017
    Abstract: Compositions containing 2,3,3,3-tetrafluoropropene and to the uses thereof as heat transfer fluid, expansion agents, solvents and aerosol. Compositions essentially containing between 10 and 90 wt. % of 2,3,3,3-tetrafluoropropene, between 5 and 80 wt. % of HFC-134a and between 5 and 10 wt. % of HFC-32. Compositions essentially containing from 10 to 45% by weight of 2,3,3,3-tetrafluoropropene, from 50 to 80% by weight of HFC-134a and from 5 to 10% by weight of HFC-32.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 6, 2014
    Applicant: ARKEMA FRANCE
    Inventor: Wissam RACHED
  • Patent number: 8863533
    Abstract: A refrigerating cycle apparatus and a method of operating the same are provided. For a refrigerating cycle having a plurality of compressors connected in series for multi-stage compression, an inner space of each compressor and a pipe of the refrigerating cycle may be connected via an oil collection pipe, and oil may be discharged into the refrigerating cycle by pressure reversal during a pressure balancing operation, so as to allow the discharged oil to be collected into a high-stage compressor or a low-stage compressor. Accordingly, an amount of oil may be uniformly maintained in each of the plurality of compressors to prevent losses due to friction and/or increases in power consumption due to a lack of oil in one or more of the compressors. The structure of a device and pipes for performing oil balancing between the compressors may be simplified to enhance efficiency of the compressors.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Minkyu Oh, Jangseok Lee, Myungjin Chung, Chanho Jeon, Sunam Chae, Juyeong Heo, Kwangwook Kim, Hoyoun Lee
  • Patent number: 8850835
    Abstract: A compressor (20) has a case (22) and a crankshaft (38). The case has a number of cylinders (30, 32). For each of the cylinders, the compressor includes a piston (34) mounted for reciprocal movement at least partially within the cylinder. A connecting rod (36) couples each piston to the crankshaft. An electric motor compartment (50) of the case has a stator (42) and a rotor (40). The rotor is mounted to the crankshaft. The case has a wall (56) between the motor compartment and a crankcase compartment/sump (52). The wall bears a feature (120, 132; 420; 460) for coalescing oil entrained in a refrigerant flow (522), which flow exits the gap (90) between the rotor and the stator to prevent the oil from entering the cylinders.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: October 7, 2014
    Assignee: Carrier Corporation
    Inventor: Paul J. Flanigan
  • Patent number: 8833102
    Abstract: A turbo compressor includes a case; a plurality of compression stages which is disposed rotatably with respect to the case via sliding parts; an oil tank in which lubricant oils to be supplied to the sliding parts are stored; an oil cooler for cooling the lubricant oils; a primary piping for communicating the oil tank with the oil cooler; and a secondary piping for communicating the oil cooler with the sliding parts, wherein an accommodation space in which the oil cooler is accommodated is formed in the case, and the primary piping and the secondary piping are disposed within the case.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: September 16, 2014
    Assignee: IHI Corporation
    Inventors: Minoru Tsukamoto, Kentarou Oda
  • Patent number: 8826691
    Abstract: An air conditioner includes at least one compressor, an outlet pipe, an inlet pipe, and at least one bypass pipe. Oil and/or refrigerant discharged from the at least one compressor flows through the outlet pipe. The inlet pipe receives the oil and/or refrigerant flown through the outlet pipe and allows the oil and/or refrigerant to flow to the at least one compressor. The at least one bypass pipe is connected to the at least one compressor and allow bypass flows of the oil and/or refrigerant from the at least one compressor to the outlet pipe.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Pil Hyun Yoon, Sai Kee Oh
  • Patent number: 8820103
    Abstract: An air conditioner includes a plurality of compressors, an intake passageway, a bypass unit, and an expansion valve. The intake passageway distributes a fluid to each of the compressors. The bypass unit includes a plurality of bypass pipes connected respectively to the compressors and a common bypass pipe to discharge the fluids from the compressors to the intake passageway. The expansion valve is provided to the bypass unit to control a flow of fluid from the common bypass pipe to the intake unit.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: September 2, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hojong Jeong, Sedong Chang, Baikyoung Chung, Jiyoung Jang
  • Patent number: 8822395
    Abstract: The present invention provides a refrigerating machine oil composition for use in a compressor for a refrigerator in which a sliding surface of at least a part of constitutional members of the compressor is coated with a lubrication film-forming composition containing a resin having a heat distortion temperature of 100° C. or higher as a binder, and a solid lubricant, wherein the refrigerating machine oil composition contains a base oil made of a polyoxyalkylene glycol having a kinematic viscosity of from 3 to 50 mm2/s as measured at 100° C., and a compound selected from the group consisting of amide compounds, amidated amino acid compounds and aliphatic amines having a specific structural formula which compound is contained in an amount of from 0.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: September 2, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Harutomo Ikeda, Takayuki Kato, Manabu Sugiura, Masami Ohno, Shuichi Yasuda, Takahiro Sugioka
  • Patent number: 8808569
    Abstract: The invention relates to the use of compositions essentially containing 2,3,3,3-tetrafluoropropene, HFC-134a and HFC-32 in compression refrigeration systems comprising exchangers operation in counterflow mode.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 19, 2014
    Assignee: Arkema France
    Inventor: Wissam Rached
  • Patent number: 8806876
    Abstract: An air conditioner (10) composed of a refrigerating apparatus includes a controller (90). A heating control section (91) of the controller (90) feeds electric current in an open phase state to an electric motor (62) of a compressor (30) to heat the compressor (30) in operation stop of the air conditioner (10). The heating control section (91) monitors the detection value of an outdoor air temperature sensor (72) during the operation stop of the air conditioner (10) and keeps on stopping feeding the electric current to the electric motor (62) during the time when the detection value decreases.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: August 19, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Junichi Shimoda, Hidehiko Kinoshita
  • Publication number: 20140216102
    Abstract: A system may include a compressor, a heat exchanger, an expansion device, and first and second working fluid flow paths. The compressor may include a compression mechanism and a motor. The heat exchanger may receive compressed working fluid from the compressor. The expansion device may be disposed downstream of the heat exchanger. The first working fluid flow path may fluidly connect the heat exchanger and the expansion device. The second working fluid flow path may be disposed downstream of the heat exchanger and may fluidly connect the heat exchanger with the compressor. The second working fluid flow path may provide compressed working fluid to the compression mechanism and to the motor.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. IGNATIEV, Robert C. STOVER
  • Patent number: 8765005
    Abstract: Provided is a refrigerating machine oil composition including a base oil which contains at least one substance selected from the group consisting of monoether compounds, alkyleneglycol diethers, and polyoxyalkyleneglycol diethers having an average repetition number of an oxyalkylene group of 2 or less as a main component, and has a kinematic viscosity at 40° C. of 1 to 8 mm2/s. The refrigerating machine oil composition is preferably applied to refrigerators whose sliding parts are composed of an engineering plastic or provided with an organic coating film or an inorganic coating film. The refrigerating machine oil can improve energy-saving performance due to its low viscosity, has high sealing property and excellent load capacity, and is suitably used in various refrigeration applications, especially in closed-type refrigerators.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 1, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masato Kaneko
  • Publication number: 20140165626
    Abstract: This invention relates to the use of chloro-trifluoropropenes as refrigerants in negative-pressure liquid chillers and methods of replacing an existing refrigerant in a chiller with chloro-trifluoropropenes. The chloro-trifluoropropenes, particularly 1-chloro-3,3,3-trifluoropropene, have high efficiency and unexpectedly high capacity in liquid chiller applications and are useful as more environmentally sustainable refrigerants for such applications, including the replacement of R-123 and R-11.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 19, 2014
    Applicant: Arkema Inc.
    Inventors: Brett L. VAN HORN, Philippe BONNET, Laurent ABBAS
  • Publication number: 20140165631
    Abstract: One variation may include a product including a mixture including CF3CF?CH2 and a lubricating oil or grease wherein the lubricating oil or grease that reduces eliminates the likelihood that the refrigerant will ignite.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 19, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Jeffrey Santrock, Todd J. Gordon, Jeffrey A. Bozeman, Bryan M. Styles
  • Patent number: 8701434
    Abstract: A cooling device includes a cooling unit (10) penetrated by a fluid to be cooled, in particular hydraulic oil, and a filter unit (12) for filtering the fluid. The filter unit (12) extends along a longitudinal side of the cooling unit (10). A fluid collecting space (16) is arranged between the filter unit (12) and the cooling unit (10). The fluid collecting space (16) has a uniform flow cross-section and is at least partially closed against the filter unit (12) by a concavely curved limitating wall (36). The optimized fluid guidance obtained results in a uniformization of speed, while at the same time avoiding cavities and turbulences to ensure a trouble-free and energetically favorable operation of the cooling device.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: April 22, 2014
    Assignee: Hydac Fluidtechnik GmbH
    Inventor: Giuseppe Zeolla
  • Patent number: 8703662
    Abstract: A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: April 22, 2014
    Assignees: Idemitsu Kosan Co., Ltd., Kabushiki Kaisha Toyota Jidoshokki, Denso Corporation
    Inventors: Masato Kaneko, Harutomo Ikeda, Takayuki Kato, Takahiro Hoshida, Masaki Inoue, Shozo Ikejima, Masataka Muto, Masahito Yamashita
  • Patent number: 8689581
    Abstract: A rotary-type fluid machine (10A) includes: a closed casing (1) having a bottom portion utilized as an oil reservoir, a rotary-type fluid mechanism (expansion mechanism) (15) that is provided in an upper portion of the closed casing (1) and in which working chambers (32, 33) in cylinders (22, 24) are partitioned into a suction side working chamber and a discharge side working chamber by vanes (28, 29), a shaft (5) having therein an oil supply passage (51) for supplying oil to the fluid mechanism (15), the shaft being connected to the fluid mechanism (15) and extending an oil reservoir (45), an oil pump (52) provided at a lower portion of the shaft (5), an oil retaining portion (65) for retaining oil, which is pumped up by the oil pump (52) and supplied through the oil supply passage (51), in a surrounding region around the fluid mechanism (15) to allow the partitioning members of the fluid mechanism (15) to be lubricated, the oil retaining portion formed so that the liquid level of the oil retained therein is
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Atsuo Okaichi, Hiroshi Hasegawa, Masaru Matsui, Tomoichiro Tamura, Takeshi Ogata
  • Patent number: 8691108
    Abstract: A refrigeration apparatus (20) includes a refrigerant circuit (10) in which refrigerant is circulated by a compressor (30) to perform a refrigeration cycle. The compressor (30) includes a fluid machine (82) for compressing refrigerant; and an electric motor (85) for driving the fluid machine (82). Refrigerant oil having volume resistivity of equal to or greater than 1010 ?·m at 20° C. is used for the compressor (30).
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: April 8, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Hideki Matsuura, Masaru Tanaka, Hideki Hara
  • Publication number: 20140090413
    Abstract: The present invention provides a capacity-control refrigeration cycle device capable of efficiently vary capacity, and in any of a full operation mode in which capacity of the refrigeration cycle device is not controlled and an operation mode in which the capacity is controlled, all of refrigerants are discharged into a hermetic container 1 and then, the refrigerants pass through a discharge path 11 and are guided to outside of the hermetic container 1. After a refrigerant and oil are sufficiently separated in the hermetic container 1, the refrigerant is discharged to outside of the hermetic container 1. Therefore, efficiencies of a condenser 300 and an evaporator 600 are not deteriorated. Since it is possible to reduce an amount of oil taken outside of the hermetic container, it is possible to stably secure oil in an oil reservoir 22, and to prevent bite of parts of a compressing mechanism and to prevent abnormal wearing.
    Type: Application
    Filed: May 8, 2012
    Publication date: April 3, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Akira Hiwata, Takeshi Ogata, Kentaro Shii
  • Patent number: 8673169
    Abstract: A lubricating oil composition for refrigerator is provided by adding base oil with biphenols selected from 4,4?-methylenebis(2,6-di-t-butyl-phenol), 2?2-methylenebis(4-methyl-6-t-butylphenol), 2,2?-methylenebis(4-ethyl-6-t-butylphenol) and 4,4?-butylidenebis(3-methyl-6-t-butylphenol).
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: March 18, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tokue Sato, Masato Kaneko, Harutomo Ikeda
  • Patent number: 8621882
    Abstract: A compressor and a refrigerating machine which enable an easy disposal of a lubricant, are friendly to the natural environment, and have simple configurations, are provided. The compressor which is used in a refrigerating machine including an evaporator and a condenser and adapted for compressing refrigerant gas evaporated in the evaporator to convey the compressed refrigerant gas to the condenser, includes: a motor; a housing having a compression chamber inside; a rotary member which has a rotating shaft and is rotated by a driving force of the motor so as to compress water vapor serving as the refrigerant gas in the compression chamber; a bearing for supporting the rotating shaft of the rotary member in the housing; and a lubricant supplier for supplying water serving as a lubricant to the bearing.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: January 7, 2014
    Assignees: Danish Technological Institute, Johnson Controls Denmark APS
    Inventors: Koichiro Iizuka, Satoshi Ide, Toshikatsu Kanemura, Yoshihiro Nakayama, Masatake Toshima, Kazuto Okada, Kunihiko Suto, Kazutaka Kurashige, Ichirou Sakuraba, Daisuke Hayashi, Masaki Ikeuchi, Shinji Shato, Lars Bay Moller, Finn Jensen, Ziad Al-Janabi, Svend Rasmussen, Hans Madsboll, Christian Svarregaard-Jensen