Hermetically Sealed Motor Pump Unit Patents (Class 417/902)
  • Patent number: 11596997
    Abstract: A connecting device includes a substantially cylindrical or tubular body provided, at one of its ends, with an outer perimeter projection and co-operative with a duct of channel of a cylinder cap. The device is preferably producible with steel aluminum alloy, or another metal alloy with similar structural and thermal properties mainly due to the stresses it may suffer during use. The device is configured to be able to absorb tolerance variations and to have a resilience capable of providing resistance at the time when a connection undergoes mechanical stresses of performance, especially torsion.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: March 7, 2023
    Assignee: NIDEC GLOBAL APPLIANCE BRASIL LTDA.
    Inventors: Daniel Lacerda De Andrade, Gerson Araujo, Guilherme Espindola, Adinor Dominoni, Jr.
  • Patent number: 11078913
    Abstract: A suction fitting coupled to a scroll compressor that has an outer housing with an inside diameter and a suction port defined in a wall of the outer housing. A suction duct is disposed inside the outer housing at a spaced distance from the wall of the outer housing. The suction duct defines an entrance port aligned with the suction port. The suction fitting includes a first member being generally cylindrical, and a second member being generally cylindrical. The second member is disposed inside the first member with a portion of the second member extending into the outer housing through the suction port, spanning the spaced distance to the suction duct, and coupling with the entrance port of the suction duct. Neither the first member nor the second member includes a suction screen for filtering out solid contaminants in a flow of refrigerant.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: August 3, 2021
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Ronald J. Duppert
  • Patent number: 10288055
    Abstract: An electric vacuum pump, in particular for arrangement in a vehicle, having an electric motor and a pump part, which can be driven by the electric motor, so that air can be drawn into the pump part from a suction connection and wherein air can be taken out of the pump part out of an outlet connection. A motor flange is provided on which the pump part rests, and the outlet connection is disposed on the motor flange. A receiving space is formed in the motor flange into which space the outlet connection opens, and a rubber-elastic insert part, which has a hollow inner region which communicates with the outlet connection, is accommodated in the receiving space. The insert part has at least one air guide opening via which air can flow from the pump part into the inner region.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 14, 2019
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hueser, Christian Praest, Raimund Wolke
  • Patent number: 10240601
    Abstract: A scroll compressor has a sealed container inside which a working fluid is sealed; a frame fixed inside the sealed container; a fixed scroll provided with a fixed-side spiral body formed in a spiral shape on a fixed-side base plate fixed inside the sealed container; and a revolving scroll in which a revolving-side spiral body meshing with the fixed-side spiral body is provided on a revolving-side base plate. The frame includes a first welded point at which the frame is fixed by welding to the sealed container, and a revolving-scroll-receiving surface supports a bottom surface of the revolving-side base plate opposite to a surface thereof on which the revolving-side spiral body is provided. A frame outer peripheral groove provided in an outer periphery of the frame faces an inner periphery of the sealed container between the revolving-scroll-receiving surface and the first welded point.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: March 26, 2019
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Yasunori Nakano, Shuji Hasegawa, Satoshi Nakamura
  • Patent number: 9028225
    Abstract: A motor-driven compressor includes a connector to which a first and second conductors are connected, and a connector case receiving the connector. The connector case includes a first case member and a second case member. A seal member is provided between the first and second case members. The first case member has a first sealing surface extending along the periphery of the first case member. The second case member has a second sealing surface extending along the periphery of the second case member and facing the first sealing surface. The seal member includes a main seal portion for sealing between the first sealing surface and the second sealing surface. The main seal portion has a first peripheral seal portion for sealing the periphery of the first conductor inserted therethrough and has a second peripheral seal portion for sealing the periphery of the second conductor inserted therethrough.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tetsuya Yamada, Shinichi Okuyama, Yoshikazu Fukutani, Shingo Enami
  • Patent number: 9004879
    Abstract: A discrete, heat-insulating exhaust muffler device (8) and a refrigeration compressor using the exhaust muffler device are provided. The exhaust muffler device (8) includes a metal cavity body defining cavities (9, 10), and intake pipe and exhaust pipe installation holes respectively arranged on the cavities (9, 10). Non-metallic shell bodies (17, 18) are further arranged outside the cavities (9, 10), and the exhaust muffler device (8) is disposed outside cylinder blocks (14) and is separated from the cylinder blocks (14). By disposing a layer of the non-metal shell bodies (17, 18) outside the metal cavity body (9, 10), thermal contact between exhaust gas and gas inside a compressor can be reduced owing to a better heat-insulating effect of the non-metallic material, thereby reducing heat transfer from the metal cavity body (9, 10) to the outside. The gas inside the compressor can have a relatively lower temperature, and the efficiency of the compressor is improved.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Huangshi Dongbei Electrical Appliance Co., Ltd.
    Inventors: Baichang Yang, Lijian Cao, Jingxiong Dai, Renshu He, Younan Wang
  • Patent number: 8992186
    Abstract: A refrigeration compressor is provided and may include a shell carrying a suction-inlet tube having an outlet nozzle opened to the interior of the shell and a cylinder block to which is mounted a suction muffler that incorporates an admission tube provided with an inlet nozzle. The inlet nozzle of the admission tube may be disposed adjacent to the outlet nozzle of the suction-inlet tube. The inlet nozzle may admit under at least one of the conditions of underpressure in its interior or deflection of the refrigerant-fluid flow in the interior of the shell the gaseous phase and may direct the liquid phase to a region of the shell external to the inlet nozzle.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: March 31, 2015
    Assignees: Emerson Climate Technologies, Inc., Whirlpool S.A.
    Inventors: Marcio Silveira, Moacir Pirovano, Cleber Knies, Ernest Bergman
  • Patent number: 8959947
    Abstract: The present invention disclosures an oil balance device and a method for performing an oil balance operation between a plurality of compressor units, which are suitable for air conditioner units comprising at least two parallel connected compressor units. Each compressor unit comprises at least one parallel connected compressors. The oil balance device comprises an oil reservoir, a first pipe, a second pipe, a third pipe and a fourth pipe. The four pipes communicate with the oil reservoir respectively. Each pipe is provided with at least one valve to control the opening and the closing of the corresponding pipe.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: February 24, 2015
    Assignees: Johnson Controls Technology Company, Johnson Controls Building Efficiency Technology (WUXI) Company
    Inventors: Stone Zhai, Xiucheng Ji, Zhonghua Gu
  • Patent number: 8944784
    Abstract: A motor device includes a main body, an assembling body, a stator and a rotor. The main body includes a first bearing hole and a plurality of first connectors, and all distances between each of the first connectors and an axle of the first bearing hole are the same. The assembling body has a second bearing hole. The stator includes a passage and a plurality of second connectors, the second connectors are coupled to the first connectors respectively to have the stator assembled in the main body, and the passage and the first bearing hole are coaxial. The rotor is disposed inside the passage and two ends of the rotor are installed in the first bearing hole and the second bearing hole respectively. By having both the stator and the rotor positioned by the main body, a gap between the rotor and the stator can be maintained consistently.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: February 3, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Yi Liang, Shu-Er Huang, Yang-Guang Liu, Yueh-Ju Tang, Chi-Hsing Chen
  • Patent number: 8939735
    Abstract: A compressor including a shell, a compression mechanism disposed within the shell, a motor actuating the compression mechanism, and a terminal body secured to the shell, may further include at least one conductor pin extending through the terminal body and a fence disposed around the terminal body and secured to the shell. A plug assembly having an inner core surrounded by an outer body includes at least one electrical receptacle housed by the inner core for selective electrical communication with the at least one conductor pin. A seal may be integrally formed with the outer body and may engage the fence when the at least one electrical receptacle is in electrical communication with the at least one conductor pin.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: January 27, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Matthew J. Heidecker, David Alan Waesch, Jesse T. Peyton
  • Patent number: 8915725
    Abstract: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant. A center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration caused by the accumulator. An eccentric portion may be provided at the stationary shaft to secure a spacious compression space. Both ends of the stationary shaft may be supported by a frame to reduce vibration. A rotor and a cylinder may be coupled with a bearing to reduce cylinder deformation. An installation area of the compressor may be minimized to enhance design flexibility of an outdoor device employing the compressor and minimize interference with other components.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 23, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Bumdong Sa
  • Patent number: 8899947
    Abstract: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size of the compressor and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant. Further, a center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration noise of the compressor caused by the accumulator. Furthermore, both ends of the stationary shaft may be supported by a frame to reduce compressor vibration without using a separate bearing. An installation area of the compressor including the accumulator may be minimized to enhance design flexibility of an outdoor device employing the compressor and minimize interference with other components, thereby facilitating installation of the outdoor device.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 2, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Bumdong Sa
  • Patent number: 8876496
    Abstract: A compressor assembly including a housing and a terminal box is provided. The terminal box is offset relative to the housing and coupled with the housing with angled studs.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventor: Thomas Rogalski
  • Patent number: 8858196
    Abstract: A compression device a rotor and stator in a case, a shaft coupled to the rotor, and a compressor coupled to the shaft to suction, compress, and discharge refrigerant within the case. At least one bearing is used to support the shaft, and the shaft has a diameter that is 0.114 times equal to or larger than and 0.138 times equal to or smaller than an outer diameter of the stator at at least one reference position.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: October 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jeongmin Han, Hongseok Seo, Jaechan An, Keunju Lee, Jeonghun Kim
  • Patent number: 8834133
    Abstract: Device for pumping fluid located under conditions of high ambient temperature and pressure which must deliver at high pressure including a hydraulic delivery pump (11) linked to a hydraulic motor (40), characterized in that the hydraulic motor (40) is connected to the hydraulic delivery pump (10) by a shaft (41), the shaft (41) passing through a leaktight rotating seal (50) which separates the hydraulic fluid (42) returned from the hydraulic motor (40) from the lubricating fluid (5) for the hydraulic pump (10).
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: September 16, 2014
    Assignee: BP Corporation North America Inc.
    Inventor: Louis-Claude Porel
  • Patent number: 8678794
    Abstract: The invention concerns a refrigerant compressor arrangement (1) with a housing (2, 3) comprising a suction opening (5), a compressor (15), which is arranged in the housing (2, 3), and is connected to the suction opening (5), and a suction connection (20) that is fixed at the housing (2, 3), and comprises a housing section (21) and a tube section (22), the housing section (21) being connected to the suction opening (5) and the diameter of the tube section (22) being different from the diameter of the housing section (21). With such a refrigerant compressor arrangement, it is endeavoured to keep the dimensions small. For this purpose, in the longitudinal direction of the suction connection (20) the housing section (21) and the tube section (22) overlap each other and are connected to each other by a corrugated area (23) with at least one radial corrugation.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: March 25, 2014
    Assignee: Secop GmbH
    Inventors: Frank Holm Iversen, Marten Nommensen, Heinz Otto Lassen, Ekkehard Handke, Dirk Sommer
  • Patent number: 8636480
    Abstract: A compressor is provided that includes a hermetically sealed container; a stator fixedly installed within the hermetically sealed container; a first rotary member that rotates, within the stator, around a first rotary shaft that extends concentrically with a center of the stator by a rotating electromagnetic field of the stator, and including first and second covers fixed to upper and lower parts thereof, respectively; a second rotary member that compresses a refrigerant in a compression space formed between the first and second rotary members while rotating, within the first rotary member, around a second rotary shaft; a vane that transmits the rotational force to the second rotary member from the first rotary member, and partitions the compression space into suction and compression regions; and first and second bearings fixed inside of the hermetically sealed container that rotatably support the first and second rotary members in an axial direction.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: January 28, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Jin-Ung Shin, Yongchol Kwon, Geun-Hyoung Lee
  • Patent number: 8628305
    Abstract: A compressor or vacuum pump fluid intake manifold has fluid intake and a pair of ports provided by male and female fittings that are slidably engaged to one another. The male fitting has a portion which forms a hollow plug which fits within a respective fluid intake of the compressor housing. The plug portion, or plug, is integrally molded with a longitudinal section of the male fitting member. In similar fashion, the female fitting includes a plug portion which interfaces with a fluid intake in the compressor housing. The plug portion is integrally molded with a longitudinal portion of the female fitting. In one embodiment, each of the plugs includes three extending flanges forming an integral portion of the plug. Two of the three flanges provide a contact pressure seal with portions of the compressor housing that define the fluid intakes which receive the plugs. The other flange serves to prevent the plugs from slipping out of the fluid intakes during normal use of the fluid intake manifold.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: January 14, 2014
    Assignee: Gardner Denver Thomas, Inc.
    Inventors: Shawn Alan Leu, Stephen Mark-Allen Moretti
  • Patent number: 8618419
    Abstract: An electric compressor includes a compression mechanism, an electric motor that drives the compression mechanism, a compressor housing that accommodates the electric motor and the compression mechanism, an inverter housing coupled to the compressor housing and including an inverter accommodation chamber that accommodates the inverter, and a sealed terminal arranged in the compressor housing. The sealed terminal electrically connects the inverter and the electric motor. The sealed terminal includes a terminal pin, which is formed from a conductive material, a terminal holder, which holds the terminal pin, and an insulative body, which insulates the terminal pin from the terminal holder. The insulative body includes a first insulative body, which is arranged in the inverter accommodation chamber and formed from a ceramic, and a second insulation body, which is arranged in the compressor housing and formed from glass.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: December 31, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroshi Fukasaku, Hiroyuki Gennami
  • Patent number: 8585373
    Abstract: The present invention discloses a hermetic compressor which can reduce the noise by regulating a suction pressure in a connector enabling a suction pipe of a hermetic container and a suction muffler to communicate with each other. The hermetic compressor includes: a hermetic container including a suction pipe through which refrigerant is sucked and accommodating a compression mechanism unit for compressing the refrigerant; a suction muffler fixed to the compression mechanism unit and reducing the flow noise when the refrigerant passes; and a connector enabling the suction pipe and the suction muffler to communicate with each other and including a hole on a refrigerant passage to communicate with an inner space of the hermetic container. An inner pressure of the connector is equalized with an inner pressure of the hermetic container, which raises a refrigerant suction pressure.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 19, 2013
    Assignee: LG Electronics Inc.
    Inventor: Bok-Ann Park
  • Patent number: 8578603
    Abstract: A compressing device, a drive shaft and a bearing device are assembled into a tubular member. All-around welding of a cover member to the tubular member is performed to form a casing in such a manner that welding is overlapped over a welding start point, at which the all-around welding is started, to form an overlapped portion in a welding bead generated by the all-around welding. In the all-around welding, heat input is externally applied to a diametrically opposite portion of the casing, which is diametrically opposite to the overlapped portion, so that the diametrically opposite portion is deformed symmetrically with respect to a welding distortion at the overlapped portion.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: November 12, 2013
    Assignee: Denso Corporation
    Inventors: Hiroyasu Kato, Masaaki Okuda
  • Patent number: 8529224
    Abstract: A hermetic compressor for adjusting the length and cross sectional area of a communication path as a refrigerant flow passage, so as to attenuate a discharge pulsation and consequently, a vibration and noise thereof. The hermetic compressor, which includes a cylinder head having a discharge chamber to discharge a compressed refrigerant and a discharge muffler to receive the refrigerant discharged from the discharge chamber, further includes a communication path to communicate the discharge chamber and the discharge muffler with each other, so as to allow the refrigerant to flow from the discharge chamber into the discharge muffler, and an auxiliary communication tube to increase a length of the communication path for increasing a refrigerant flow distance. The auxiliary communication path reduces the cross sectional area of a refrigerant flow passage while increasing a refrigerant flow distance, thereby attenuating a low-frequency component of the discharge pulsation.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: September 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Il Park, Jeong Hoon Kang, Ji Hoon Choi, Phil Soo Chang
  • Patent number: 8517697
    Abstract: There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: August 27, 2013
    Assignee: Panasonic Corporation
    Inventors: Kenji Kinjo, Ko Inagaki, Masakazu Yamaoka
  • Patent number: 8469679
    Abstract: An object of the present invention is to promote oil separation in a sealed container, thereby decreasing the amount of oil discharged to the outside of a compressor. The compressor comprises discharge hole provided at position facing the end surface of a rotor and through which a compressed refrigerant from first and second rotary compression elements is discharged into the sealed container; and a refrigerant flow path which is extended from a space surrounded with a coil end of a stator projecting from the end surface of the rotor to a rotary compression mechanism side to a space of an air gap between the rotor and the stator, to guide the compressed refrigerant discharged through the discharge hole to an electromotive element opposite to the rotary compression mechanism side.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 25, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hirotsugu Ogasawara, Takahiro Nishikawa, Yoshihisa Kogure, Kazuhiko Arai, Hiroyuki Yoshida
  • Patent number: 8459964
    Abstract: A noise reducing device for a hermetic type compressor is provided that includes a plate film in a connection member that connects a suction pipe and a suction muffler to each other. The plate film bends and opens when a refrigerant is sucked while preventing a back flow of noise. The plate film is capable of sucking the refrigerant without interference and preventing noise or pressure pulsation transferred in a direction of the suction pipe in the suction muffler, and thereby is capable of remarkably reducing noise of the compressor.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: June 11, 2013
    Assignee: LG Electronics Inc.
    Inventors: Min-Kyu Jung, Jea-Young Choi
  • Patent number: 8435017
    Abstract: A valve plate includes a suction port to which gas to be compressed in a compression chamber flows in and a discharge port from which gas compressed in the compression chamber is discharged, a projection that appears from the discharge port with the reciprocating movement of the piston is arranged at a position facing the discharge port at a distal end face of the piston, and the projection includes a flat surface extending parallel to a reciprocating direction of the piston, so that a highly efficient hermetic type compressor that reduces the dead volume of the discharge port and reduces the loss in the compression chamber and the discharge port is provided.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 7, 2013
    Assignee: Panasonic Corporation
    Inventors: Naohiro Hamada, Kenji Kinjo
  • Patent number: 8419394
    Abstract: To a hermetic compressor and a refrigeration cycle device having the same, an oil separator for separating oil from a refrigerant discharged from a compression unit is added. Separated oil is recollected into an oil pump driven by a driving motor. Because refrigerant separated from the oil is prevented from being re-introduced into the compressor, a cooling capability of the refrigeration cycle device may be enhanced. Because the oil pump is driven by the driving force of the driving motor, the compressor may have a simplified configuration, and the fabrication costs may be reduced. The oil used for a crankshaft lubrication process is returned to the oil pump by forming an oil pocket between bearing surfaces of a crankshaft and the oil pump, oil may be prevented from back-flowing to the oil separator from the crankshaft. This may allow oil to be smoothly recollected into the oil pump.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: April 16, 2013
    Assignee: LG Electronics Inc.
    Inventors: Nam-Kyu Cho, Hyo-Keun Park, Byeong-Chul Lee, Se-Heon Choi
  • Patent number: 8388318
    Abstract: A heater is provided inside a hermetic compressor to heat the fluid in an oil sump of the compressor. The heater can be substantially submerged in the fluid even at low fluid levels. The heater can raise the temperature of the fluid to a predetermined temperature to substantially maintain non-lubricant fluids in a gaseous state and prevent non-lubricant fluids from mixing with the lubricant in the sump. A feed through assembly in the compressor housing is used to supply power to both the compressor motor and the heater.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: March 5, 2013
    Assignee: Bristol Compressors International, Inc.
    Inventor: John W. Tolbert, Jr.
  • Patent number: 8328534
    Abstract: A sealed compressor includes a cylindrical shell extending along an axis. A compressor pump unit is mounted within a housing defined by the cylindrical shell. An electric motor has an inner rotor and an outer stator. The stator has an outer peripheral surface of a first dimension. The center shell has a nominal inner diameter, greater than the first dimension of the stator. The rotor drives a driveshaft about the axis. The driveshaft is associated with the compressor pump unit. A suction port extends through the center shell to deliver a suction fluid to be compressed by the compressor pump unit. Some of the suction fluid flows into a gap defined between the nominal inner diameter of the center shell and the outer periphery of the stator. The center shell has portions deformed radially inwardly to contact the outer periphery of the stator.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: December 11, 2012
    Assignee: Danfoss Scroll Technologies, LLC
    Inventors: Carlos Zamudio, Tracy L. Milliff
  • Patent number: 8303278
    Abstract: A scroll compressor that utilizes liquid or vapor injection to cool a working fluid being compressed by an orbiting scroll member and a non-orbiting scroll member, and/or to increase the efficiency of the compressor. An injection fitting is secured to, and extends through, the compressor housing and receives liquid or vapor working fluid from a source external to the compressor. The non-orbiting scroll member may be fixedly mounted with respect to the crankcase of the compressor, and internal passages formed within the crankcase and the non-orbiting scroll member, which are substantially isolated from the suction pressure and discharge pressure chambers of the compressor, are used to convey liquid or vapor working fluid from the injection fitting into intermediate pressure working pockets defined between the scroll members.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: November 6, 2012
    Assignee: Tecumseh Products Company
    Inventors: Johnathan P. Roof, Anil Gopinathan, Damanjit Singh
  • Patent number: 8257061
    Abstract: A hermetic compressor with internal thermal insulation, comprising: a compression cylinder having one end closed by a valve plate provided with a discharge orifice and having a front face against which is mounted a cylinder cover internally defining a discharge chamber; and a spacing duct having one inlet end hermetically mounted to the front face of the valve plate and open to the discharge orifice and an outlet end hermetically mounted to the cylinder cover and open to the interior of the discharge chamber, said spacing duct defining a hermetic fluid communication between the interior of the compression cylinder and the discharge chamber maintaining the cylinder cover spaced from the valve plate and defining, with the latter, an annular plenum around said spacing duct.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: September 4, 2012
    Assignee: Whirlpool S.A.
    Inventors: Fernando Antonio Ribas, Jr., Rodrigo Link, Dietmar Erich Bernhard Lilie, Marcio Luiz Todescat
  • Patent number: 8251682
    Abstract: An integrally formed vane (301) is disposed slidably in a vane groove (205a) of a first cylinder (205) and a vane groove (206a) of a second cylinder (206). A cut-out (301a) with a width substantially equal to the thickness of an intermediate plate (304) is provided in the vane (301), which is divided by this cut-out (301a) into a first vane portion (301b) whose leading end makes contact with a first piston (209) at its leading end and a second vane portion (301c) whose leading end makes contact with a second piston (210). This configuration allows the first vane portion (301b) to be pushed toward the first piston (209) side by the pressure difference acting on the second vane portion (301c) and makes it possible to keep a contact state between the first vane portion (301b) and the first piston (209), even when no pushing force toward the first piston (209) side that results from the pressure difference acts on the first vane portion (301b).
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: August 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Hasegawa, Masaru Matsui, Atsuo Okaichi, Tomoichiro Tamura, Takeshi Ogata
  • Patent number: 8210832
    Abstract: The hermetic compressor has grooves provided at an upper side and a lower side of outer circumference of a piston. Of outer shape of the grooves, the outer shape of the grooves communicating with a space in the hermetic container at least when the piston is in a bottom dead center is a shape not forming parallel line to an axial center of the piston when the grooves are developed in a plane.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: July 3, 2012
    Assignee: Panasonic Corporation
    Inventors: Makoto Katayama, Kosuke Tsuboi
  • Patent number: 8192174
    Abstract: The invention concerns a refrigerant compressor (1), in particular a semi-hermetic refrigerant compressor, with a compressor block (5) comprising several cylinders arranged in a star shape, a motor, whose rotor is unrotatably connected to a crankshaft (11) that comprises a crank pin (22) and is supported in a bearing (13) in the compressor block (5), and a piston in each cylinder, each piston being connected via a connecting rod (23) to the crank pin (22), the connecting rod (23) comprising a bearing pad (24) that rests on the crank pin (22), the bearing pads (24) of all connecting rods (23) being held on the crank pin (22) by means of a ring arrangement (25). It is endeavored to keep the load on the crankshaft small. For this purpose, each connecting rod (23) has a power application point (49) at the crank pin (22), which is displaced in the direction of the bearing (13) in relation to the axial center of the crank pin (22).
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 5, 2012
    Assignee: Danfoss A/S
    Inventors: Jürgen Süss, Christian Jepsen
  • Patent number: 8177529
    Abstract: In a compressor, a motor includes a stator and a moving member that reciprocates. A frame supports the stator and a conductivity member flows at least a portion of magnetic flux flowing away from the stator back to the stator. Accordingly, the reciprocating compressor has enhanced energy efficiency.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 15, 2012
    Assignee: LG Electronics, Inc.
    Inventors: Sang-Sub Jeong, Won-Sik Oh, Hyuk Lee
  • Patent number: 8152497
    Abstract: In sealed compressors, in one form of the invention, the compressor housing and the compression mechanism are assembled to one another without fasteners. As a result, the time required to install and tighten the fasteners is eliminated, lessen the time required to assemble the compressor. Further, such a fastenerless assembly requires less parts and machining, further reducing the cost of the compressor. Additionally, in one form of the invention, the compression mechanism includes two bearings mounted to the compressor housing and a cylinder block reciprocatingly driven between the bearings by an eccentric member of the crankshaft. Typically, the cylinder block of existing compressors is rigidly mounted to the compressor housing and does not reciprocate.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: April 10, 2012
    Assignee: Tecumseh Products Company
    Inventors: Edwin L. Gannaway, Clayton Carn
  • Patent number: 8141679
    Abstract: An absorptive muffler assembly includes a first body and a second body surrounding the first body. A resilient mount having at least one resilient portion and at least one support arm supports the first body and isolates the second body from vibrations of the first body.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: March 27, 2012
    Assignee: Carrier Corporation
    Inventor: John J. Jacobs
  • Patent number: 8113797
    Abstract: Provided is a simplified design for spring retainers in a hermetically enclosed refrigerant compressor. A hermetically enclosed refrigerant compressor includes a hermetically tight enclosure, and an electrical motor unit and a compressor supported relative to the enclosure by springs. The electrical motor unit and compressor include a first spring retainer and the enclosure includes a second spring retainer. The first and second spring retainers hold springs such that the electrical motor and compressor are supported relative to the enclosure. The first spring retainer is integrated with the electrical motor unit and the compressor.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: February 14, 2012
    Assignee: Secop GmbH
    Inventors: Jesper Valbjoern, Kristoffer Riemann Hansen, Anders Jakob Madsen
  • Patent number: 8105054
    Abstract: A scroll compressor is provided with an oil return tube having an outlet for directing oil toward a motor protector for an electric motor. The oil supply tube is positioned to be at an angle relative to the drive axis of a shaft driven by the electric motor. This ensures that the outlet of the oil supply tube can be properly positioned relative to the electric motor. Under normal conditions, an adequate flow of refrigerant will pull the oil from the oil supply tube and away from the motor protector. However, should there be an inadequate flow of refrigerant within the sealed compressor, the oil will contact the motor protector, which in turn may stop operation of the electric motor.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: January 31, 2012
    Assignee: Scroll Technologies
    Inventors: Chong Yeow Oo, Zili Sun
  • Patent number: 8011900
    Abstract: A heat dissipating system for a hermetic compressor includes a thermal energy transfer duct having a heat absorbing end mounted to the cylinder block of the compressor to absorb the heat generated by the compression of the refrigerant fluid in the cylinder block and a heat releasing end positioned away from the heat absorbing end and away from the cylinder block in order to release the heat conducted from the cylinder block by the transfer duct.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: September 6, 2011
    Assignee: Whirlpool S.A.
    Inventors: Fabricio Caldeira Possamai, Leonard L. Vasiliev
  • Patent number: 8002528
    Abstract: A compressor includes a shell, a compression mechanism, a motor, a base member, and a mounting foot. The compression mechanism is disposed within the shell and the motor is drivingly engaged with the compression mechanism. The base member is coupled to the shell and a mounting foot is fixed to the base member. The mounting foot includes a mounting aperture extending therethrough and a slot intersecting the aperture that attenuates vibrations within an operating frequency range of the compressor.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: August 23, 2011
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Thomas R. Hodapp, Robert J. Comparin, Parag H. Mathuria, Daniel L. McSweeney
  • Patent number: 7959418
    Abstract: A mounting structure has a base member, a mounted member and a plurality of C-shaped retainer rings. The base member has an opening. The mounted member is fitted to the opening. The plurality of C-shaped retainer rings is fitted to the base member for preventing the mounted member from moving away from the base member.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: June 14, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tatsuya Koide, Masanori Sonobe, Ken Suitou
  • Patent number: 7946831
    Abstract: To improve a compressor for refrigerant, comprising an outer casing, a scroll compressor disposed in the outer casing, a drive unit, disposed in the outer casing, for the second compressor body, having an eccentric drive, a drive shaft running in lying arrangement or approximately horizontally in the outer casing and a drive motor, which includes a stator and a rotor seated on the drive shaft, as well as a lubricant supply, in such a manner that the minimum possible quantity of lubricant is required, it is proposed that a lubricant collection space is disposed in the outer casing, that the lubricant supply has a delivery wheel which delivers lubricant from a delivery sump into a feed space for the drive shaft, and that a lower pressure prevails in a lubricant delivery space accommodating the delivery sump than in the lubricant collection space, so that the lubricant which collects in the lubricant space, on account of the pressure difference, passes into the delivery sump.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: May 24, 2011
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Dieter Roller, Gernot Balz, Thomas Varga
  • Patent number: 7946834
    Abstract: A balance shaft module according to the present invention includes a first balance shaft equipped with a first eccentric balance weight, a second balance shaft equipped with a second eccentric balance weight, and a hydraulic pump that is operated by the first balance shaft and the second balance shaft, wherein the hydraulic pump includes a first gear equipped on the first balance shaft and a second gear equipped on the second balance shaft and externally meshed with the first gear.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: May 24, 2011
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Myung Rae Cho, Jin Woo Cho, Woo Tae Kim, Hong Wook Lee, Min Sig Shin
  • Patent number: 7887306
    Abstract: The present invention discloses a linear compressor including a shell, a compressor main body installed in the shell and composed of a cylinder, a piston reciprocated inside the cylinder to compress refrigerant, and a linear motor for driving the piston, and elastic members spaced apart from the bottom of the shell to support the compressor main body inside the shell. In this configuration, since installation positions of the elastic members approach a gravity center of the compressor main body, a rotation moment imparted to the elastic members can be lowered and vibration of the compressor main body can be reduced.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 15, 2011
    Assignee: LG Electronics Inc.
    Inventor: Hyo-jae Lee
  • Patent number: 7850436
    Abstract: A structure and method for fixing an upper cup muffler to an upper bearing portion. The upper bearing portion includes a step portion having an upper, lower and side surfaces. A peripheral edge portion between the upper and side surfaces of the upper bearing portion is declined outwardly to have a slant surface. The upper cup muffler includes a bottom surface and a peripheral side surface lower portion that extends downwardly from the edge portion of the bottom surface. The peripheral side surface lower portion gets across the slant surface of the upper bearing portion and is brought into linear or planar contact with at least one of the outer side surface and the lower surface of the step portion when the bottom surface of the upper cup muffler and the upper surface of the upper bearing portion are fixed to each other.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: December 14, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hiroyuki Sawabe, Yoshiaki Hiruma, Hiroyuki Yoshida
  • Patent number: 7832994
    Abstract: A hermetic-type compressor according to the present invention has a viscous pump part by combining a spiral groove formed on the outer periphery of a main shaft with the inner periphery of a main shaft bearing, and at least one sliding section being in a sliding engagement with the main shaft bearing and at least one non-contact sliding-section having a predetermined gap with the main shaft bearing are formed on the face at the outer periphery of the main shaft opposing to the main shaft bearing where the lower end of the groove is located at the non-contact sliding-section.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: November 16, 2010
    Assignee: Panasonic Corporation
    Inventors: Hironari Akashi, Kosuke Tsuboi
  • Patent number: 7806230
    Abstract: A resilient mount useful in a muffler assembly includes a support arm, a bracket arm and at least one resilient portion. In one example, the resilient portion comprises neoprene to provide a cushion between the support arm and the bracket arm. The resilient mount is for supporting at least one absorptive body within a housing and isolating the housing from vibrations of the absorptive body.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: October 5, 2010
    Assignee: Carrier Corporation
    Inventor: John J. Jacobs
  • Patent number: 7789202
    Abstract: Disclosed is a pressurized internal oil management system, comprising an oil dam, at least one oil separator, at least one oil collection manifold, at least one oil pump, and one or more paths for returning the separated oil; said system integrated within the casing of a fluid displacement device to supply adequate lubrication regardless of orientations under zero to full gravity, and methods and applications related thereto. Fluid displacement devices useful herein include oil lubricated rotary or reciprocating machinery, such as compressors, expanders, pumps and engines, in the casing of which exists one or more drive mechanisms that can be utilized to operate the oil management system, in most cases without even increasing the size of the casing.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: September 7, 2010
    Assignee: Aspen Compressor, LLC.
    Inventors: Kang P. Lee, William Gronemeyer
  • Patent number: 7780421
    Abstract: A refrigerant compressor has a hermetically tight compressor housing inside of which a piston-cylinder unit operates. A suction muffler through which refrigerant flows to the intake valve of the piston-cylinder unit is provided on the cylinder head. The inlet of the suction muffler has a cross section via which refrigerant flows into the suction muffler. A compensating volume is provided inside of which refrigerant oscillates and which is connected to the suction muffler and the interior of the compressor housing. The cross section of the inlet also acts as the connecting port between the compensating volume and the filling volume. The compensating volume is formed by an outer tube directed into the compressor housing, which tightly surrounds the intake port of the inlet while surrounding the section of the refrigerant suction pipe that is connected to the evaporator of the compressor and extends into the interior of the compressor housing.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: August 24, 2010
    Assignee: ACC Austria GmbH
    Inventor: Alfred Freiberger