Helical Pumping Member Having Planetary Movement (e.g., Scroll) Patents (Class 417/410.5)
  • Patent number: 10738780
    Abstract: An electric compressor includes a compression portion, an electric motor portion, a motor drive circuit portion, and a housing in which the compression portion, the electric motor portion, and the motor drive circuit portion are arranged in this order in an axial direction. The electric compressor further includes a partition wall, a refrigerant inlet, and a conductive member. The refrigerant inlet is disposed at a position in the housing closer to a partition wall than to the compression portion. The conductive member electrically connects the motor drive circuit portion and the electric motor portion. The electric compressor includes a shield member configured to block flow of refrigerant taken in through the refrigerant inlet and flowing toward the conductive member. The shield member is disposed in the electric motor portion so as to be located between the refrigerant inlet and the conductive member.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: August 11, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi Fukasaku, Yoshiki Nagata
  • Patent number: 10227982
    Abstract: A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, a stator 37 of the driving motor 13 is directly or indirectly supported in the casing 3, and the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, and a lower end of the driving shaft 15 is supported by a thrust plate 6 provided to the bearing plate 8, and the center position of the rotor 39 is located to be lower than the center position of the stator 37.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 12, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Akihiro Hayashi, Kenji Aida, Kazuyoshi Sugimoto, Yasunori Kiyokawa, Yoshihiko Nagase, Katsuki Akuzawa, Yoshiaki Nagasawa
  • Patent number: 10100640
    Abstract: An electric compressor to be mounted on an engine in an engine compartment of a vehicle includes a compression mechanism, an electric motor, a motor driving circuit, a housing, a first mounting leg and a second mounting leg. The housing accommodates therein the compression mechanism, the electric motor and the motor driving circuit. The first mounting leg projects from the housing at a position adjacent to the compression mechanism. The second mounting leg projects from the housing at a position adjacent to the motor driving circuit. Each of the first mounting leg and the second mounting leg includes a fastening portion to be fastened to a portion of the engine and a connecting portion that connects the fastening portion with the housing. The connecting portion of the first mounting leg is made to be broken more easily than connecting portion of the second mounting leg.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 16, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Tomoyoshi Inagaki
  • Patent number: 9705374
    Abstract: A radially outer insulating paper includes: an annular radially outer insulating paper base portion that is disposed on a radially inner side of a row of first coil terminals; and radially outer insulating paper protruding portions that each protrude radially outward from an axially outer end portion of the radially outer insulating paper base portion, and that are inserted between adjacent first coil terminals axially further outward than second bent portions; and a radially inner insulating paper includes: an annular radially inner insulating paper base portion that is disposed on a radially outer side of a row of second coil terminals; and radially inner insulating paper protruding portions that each protrude radially inward from an axially outer end portion of the radially inner insulating paper base portion, and that are inserted between adjacent second coil terminals axially further outward than fourth bent portions.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: July 11, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tatsuro Hino, Akihiro Yamamura, Shuichi Tamura, Akira Hashimoto, Tetsuya Yokogawa, Atsushi Sakaue, Kazunori Muto
  • Patent number: 9581160
    Abstract: A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and intercommunication paths 38B, 54A through which lubrication oil scraped up by the pickup 45 and supplied to respective lubrication sites is returned to the lower side of the driving motor 13 are provided between the stator 37 and the spacer ring 38 or between the spacer ring 38 and the casing 3.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 28, 2017
    Assignee: Panasonic Intellectual Property Management Co. Ltd.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Akihiro Hayashi, Katsuki Akuzawa, Kenji Aida, Kazuyoshi Sugimoto, Yasunori Kiyokawa, Yoshihiko Nagase, Yoshiaki Nagasawa
  • Patent number: 9470219
    Abstract: An electric pump includes a pump portion, a motor portion including a rotor formed in a cylinder form sharing an axis with a rotation shaft provided at the pump portion and a stator formed in an annular form arranged at an outer periphery of the rotor with a clearance between the stator and the rotor, and a driver portion arranged at a position between the pump portion and the motor portion when viewed in a direction orthogonal to an axial direction of the rotation shaft, the driver portion controlling the motor portion, the driver portion arranged in a state where a portion of the driver portion overlaps with at least a portion of the pump portion or with at least a portion of the motor portion when viewed in the axial direction.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 18, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hiroshi Kato, Hideki Nakayoshi
  • Patent number: 9145889
    Abstract: A scroll compressor is provided that may include a discharge cover that separates a suction space and a discharge space of an airtight container. The discharge cover may be inserted into a fixed scroll to be fixedly coupled thereto, reducing an amount of components, such as a gasket and fastening bolts required to fix the discharge cover, and an assembly time, reducing overall production costs. Also, as fastening bolts are not used, a width corresponding to a space for bolts may be reduced in the fixed scroll, whereby a phenomenon in which the fixed scroll is heated by a discharge refrigerant within the discharge space may be reduced, reducing suction loss of the refrigerant sucked into the compression chamber and improving compressor efficiency. Also, a size of the fixed scroll may be reduced, reducing a weight of the fixed scroll, and a weight of the overall compressor.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 29, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Pilhwan Kim, Injong Jang
  • Patent number: 9051835
    Abstract: A compressor assembly includes a housing that is annular and surrounds a longitudinal central axis. The compressor also has a compressor housed in the housing, a terminal box, and a first stud coupling the terminal box with the housing. The first stud defines a first central axis. A second stud also couples the terminal box with the housing. The second stud defines a second central axis. Both the first and second central axes extend through the housing on the same side of the longitudinal central axis of the housing.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: June 9, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Thomas Rogalski
  • Patent number: 9039384
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: May 26, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Ronald J. Duppert, Thomas Rogalski
  • Patent number: 9039396
    Abstract: A compressor is provided and may include a shell, a motor assembly, a drive shaft, a first compression mechanism, and a second compression mechanism. The motor assembly may be disposed within the shell. The drive shaft may be powered by the motor assembly. The first compression mechanism may be disposed within the shell and may be driven by the motor assembly. The second compression mechanism may be driven by the motor assembly.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: May 26, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Kirill M. Ignatiev
  • Patent number: 9033689
    Abstract: The scroll refrigeration compressor includes a sealed casing, stationary and moving volutes including spiral wraps engaged in one another and defining the variable-volume compression chambers, a delivery chamber defined by the plate of the stationary volute and the sealed casing, a heat shield disposed in the delivery chamber and dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing, and at least one flow passage arranged to communicate the first and second volumes. The compressor further includes at least one bypass passage arranged to communicate the first volume with an intermediate compression chamber, and at least one bypass valve disposed in the first volume and movable between closing and opening positions for closing and opening the corresponding bypass passage.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 19, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Christophe Ancel
  • Publication number: 20150093269
    Abstract: In a compressor having a compressor body and a motor integrated with one another and having the structure in which the sub-assembly of the motor portion and the compressor body are assembled by positioning the centers of the motor casing and compressor casing with positioning pins, when the deformation of the flange surface of the motor casing is large on the side of the compressor casing, the positioning pin holes may have positional dimensions where the positioning is difficult. Therefore, the rigidity of the motor casing may need to be increased not to change the dimensional positions of the pin holes of the motor casing after the sub-assembly process. Inside the motor casing, fastening seats to fasten a motor stator by use of fastening members and ribs to reinforce the fastening seats are provided. As a result, the rigidity of the motor casing is increased, and the deformation of the positional dimensions of the positional pin holes can be inhibited.
    Type: Application
    Filed: July 10, 2014
    Publication date: April 2, 2015
    Inventors: Kiminori IWANO, Yoshio KOBAYASHI
  • Patent number: 8992188
    Abstract: In a revolution type compressor using a balance weight for balancing a rotating mass, the effect of oil churn reduction is enhanced, and compressor input is reduced. A balance weight fixed to a drive shaft between a rotor of an electric motor 4 and a compression mechanism includes a weight portion in a substantially semicircular column shape for balancing a rotating mass, a cover portion which is substantially semi-cylindrical and has an opening in the vicinity of a top and bottom at an opposite side in a radial direction from the weight portion, and a hollow space surrounded by the weight portion and the cover portion. Further, a space for discharging oil is provided between the balance weight and the rotor. By the structure, reduction in oil churn, and reduction in input of the compressor are realized, and the compressor with less power consumption is obtained.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: March 31, 2015
    Assignee: Hitachi Appliances, Inc.
    Inventors: Satoshi Nakamura, Mutsunori Matsunaga, Takeshi Tsuchiya, Masatsugu Chikano
  • Patent number: 8974197
    Abstract: The invention relates to a system and method of providing a compressor mechanism having a front housing, center housing and rear housing. The center housing includes an integrated compressor bearing support and compressor base surface that divides the housing into cantilevered wall sections. The system and method constructed in this manner provides a compact structure for an electric compressor with the ability to reduce noise vibration harshness.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: March 10, 2015
    Assignee: Halla Visteon Climate Control Corporation
    Inventors: Timothy Raymond VanBritson, Michael Gregory Theodore, Jr., Kanwal Bhatia, Scott Wenzel, Brian Robert Kelm
  • Publication number: 20150056086
    Abstract: An electric compressor includes a housing accommodating therein a compression mechanism and an electric motor which drives the compression mechanism through a rotating shaft thereof, and an inverter cover which is joined to the housing and accommodates therein an inverter circuit portion. The inverter circuit portion is supported by a base member which is mounted to the housing and includes electrolytic capacitors mounted to the base member in such an orientation that the longitudinal direction of the electrolytic capacitors intersect the axis of the rotating shaft and a capacitor holder for housing the electrolytic capacitors. The electrolytic capacitors and the capacitor holder are disposed at a position radially inward of mounting legs of the base member and also radially inward of an imaginary extension extending in the axial direction.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 26, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Junya YANO, Yusuke KINOSHITA, Akio FUJII, Junichi TAKAHATA
  • Patent number: 8956129
    Abstract: An electric compressor is provided with a hermetic terminal wherein the number of components and the number of steps and amount of time required for assembling the hermetic terminal and for machining the components are reduced, to thereby improve production efficiency. The hermetic terminal (41) is located in a through hole (2c) provided to a motor housing (2). A terminal main body (42) of the hermetic terminal (41) is provided with a flange portion (42b) located inside the motor housing (2) to prevent the hermetic terminal (41) from falling off to outside through the through hole (2c). Moreover, movement of the hermetic terminal (41) to an inner side of the motor housing (2) is restricted by a shaft supporting member (21) which faces thereto through a cluster block (44) interposed therebetween.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuo Murakami, Kenji Mochizuki
  • 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
  • Publication number: 20150023820
    Abstract: A compressor assembly includes a housing that is annular and surrounds a longitudinal central axis. The compressor also has a compressor housed in the housing, a terminal box, and a first stud coupling the terminal box with the housing. The first stud defines a first central axis. A second stud also couples the terminal box with the housing. The second stud defines a second central axis. Both the first and second central axes extend through the housing on the same side of the longitudinal central axis of the housing.
    Type: Application
    Filed: October 3, 2014
    Publication date: January 22, 2015
    Applicant: BITZER KUEHLMASCHINENBAU GMBH
    Inventor: Thomas Rogalski
  • Publication number: 20150010414
    Abstract: The present invention provides a stator, a three-phase induction motor and a compressor. The stator is applied to a three-phase induction motor of a compressor. The stator includes: a stator iron core; a plurality of stator teeth extending inwards along a radial direction of the stator; stator slots distributed between the plurality of stator teeth; and three phases of windings wound around the stator teeth to generate a rotating magnetic field, where a coil of each phase of winding in the three phases of windings is made of a composite wire. The composite wire includes a wire core made of a first conductive metal material, and an outer layer wrapping an outer circumferential surface of the wire core and made of a second conductive metal material, wherein the first conductive metal material and the second conductive metal material have different electrical conductivities.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Inventors: Weiping Tang, Li Yao, Wanzhen Liu, Guangqiang Liu, Yan Lin, Zhenyu Wang
  • Patent number: 8920139
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 30, 2014
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Tracy E. Shay
  • 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
  • Publication number: 20140322048
    Abstract: A motor-driven compressor in which an electric driving mechanism is capable of keeping high efficiency. The compressor includes an electric driving mechanism, a compression mechanism and a motor drive circuit. The electric driving mechanism is accommodated in a housing. The housing has a main body portion in a cylindrical shape, a bulging portion that bulges in a radially outward direction from the main body portion, and a partition wall. In the main body portion, a stator accommodation chamber is formed. In the stator accommodation chamber, a stator of the electric driving mechanism is accommodated. In the bulging portion, a cluster block accommodation chamber is formed. In the cluster block accommodation chamber, a cluster block is accommodated. A partition wall separates the stator accommodation chamber and the cluster block accommodation chamber in a radial direction. The main body portion and the partition wall support a stator core.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomoyoshi INAGAKI, Taku ADANIYA, Hiroki NAGANO, Takuya NARUSE
  • Publication number: 20140294628
    Abstract: To provide a motor-driven compressor which suppresses heat generation, enables power saving, exerts excellent durability, lowers a manufacturing cost, and hardly produces a defective product. The motor-driven compressor according to the present invention comprises a cover. The cover includes a first connector portion, first and second wires, and first and second resin portions. The first and second wires include first and second terminal portions having a cylindrical shape, lead portions, and first and second lid portions that are supported at opening end portions of the first and second terminal portions. The first and second lid portions close the opening end portions of the first and second terminal portions, and thereby prevent an insulating resin from entering the first and second terminal portions.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Junya YANO
  • Patent number: 8840384
    Abstract: At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: September 23, 2014
    Assignee: Danfoss Scroll Technologies, LLC
    Inventors: Tapesh P. Patel, Gene Fields, Joe T. Hill, Tracy L. Milliff, Harshal Upadhye, Behzad Parastar, Ole Holst Christensen
  • Publication number: 20140248169
    Abstract: A scroll compressor includes a compression mechanism, a crankshaft, and a drive motor. The compression mechanism has a fixed scroll and a movable scroll and is configured to compress a fluid. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The drive motor has a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll. At least one of the main shaft of the crankshaft and the rotor of the drive motor is provided with a weight. The weight being is arranged to balance a centrifugal force of the movable scroll during rotation, and to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll.
    Type: Application
    Filed: September 27, 2012
    Publication date: September 4, 2014
    Inventor: Takashi Uekawa
  • Publication number: 20140227117
    Abstract: A scroll compressor includes a compression mechanism, a crankshaft, upper and lower bearings, and a drive motor. The compression mechanism includes fixed and movable scrolls engaged with each other to form a compression chamber. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The upper and lower bearings support upper and lower portions of the main shaft. The drive motor has a stator and a rotor coupled to the main shaft to rotate the movable scroll. At least one of the main shaft and the rotor is provided with a weight arranged to reduce distortion of the crankshaft caused by a fluid load generated in the compression chamber and applied to the eccentric portion during rotation.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 14, 2014
    Applicant: Daikin Industries, Ltd.
    Inventor: Takashi Uekawa
  • Patent number: 8784067
    Abstract: An electromagnetic valve, which is provided between an intake port of a compressor body and a pneumatic line at an intermediate position of an intake pipe, is opened/closed by a control unit. Communication between the intake port of the compressor body and the pneumatic line is permitted when the valve is open, and is blocked when the valve is closed. In a start-up control of the compressor body, the electromagnetic valve is opened, permitting communication of the pneumatic line in the plant with the intake port of the compressor body for power supply to an electric motor to drive an orbiting scroll. Rattling of the orbiting scroll by an amount equal to the axial gap (play) is suppressed before starting a compression operation.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 22, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Kiminori Iwano, Yuji Komai, Susumu Sakamoto, Aya Mizukoshi
  • Patent number: 8777591
    Abstract: An electrically driven compressor system for vehicles has a hollow shell, inside which there is a transmission set and a scroll set. The outer surrounding of the hollow shell is formed with a chamber. A control circuit board is disposed in the chamber. A processing chip is provided on the side of the control circuit board that faces the bottom of the chamber. A thermal paste is coated on the end surface of the processing chip towards the bottom of the chamber. The end surface of the processing chip with the thermal paste coating urges against the bottom surface of the chamber.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: July 15, 2014
    Assignee: Heng Sheng Precision Tech. Co., Ltd.
    Inventors: Huan-Kuei Cho, Ming-Feng Chou
  • Patent number: 8757989
    Abstract: A motor-driven compressor includes a compression mechanism for compressing refrigerant, an electric motor for driving the compression mechanism, an inverter for controlling the operation of the electric motor, and a motor harness for electrically connecting the electric motor to the inverter. The compression mechanism and the electric motor are mechanically connected each other. The electric motor has first and second coil ends. The first coil end is located on the side of the compression mechanism and the inverter is located on the side of the second coil end. The motor harness is led out from the first coil end.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: June 24, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventor: Kazuo Murakami
  • Publication number: 20140161649
    Abstract: There are provided a scroll compression device in which magnetization of a rotor and centering of a fixed scroll can be easily performed, and a method of assembling the scroll compression device.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 12, 2014
    Applicant: SANYO ELECTRIC CO., LTD
    Inventors: Akihiro Hayashi, Satoshi Iitsuka, Kenji Aida, Tsutomu Kon, Yasunori Kiyokawa, Kazuyoshi Sugimoto, Yoshihiko Nagase, Katsuki Akuzawa, Yoshiaki Nagasawa
  • Publication number: 20140154116
    Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 5, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiko ISHIZONO, Hideaki MAEYAMA, Takeshi FUSHIKI, Taro KATO
  • Publication number: 20140154115
    Abstract: A scroll compressor system for compressing a refrigerant, the scroll compressor comprising a single phase motor which includes a stator having a stator core that defines a plurality of slots positioned radially about an interior of the stator core and windings located within the plurality of slots. The windings including a main winding and a start winding and each of the main and start winding are formed from a conducting wire that includes aluminum. The compressor includes a rotor disposed concentrically within the stator, a drive shaft coupled to the rotor, and an orbital scroll member coupled to the drive shaft. The single phase motor, drive shaft, and orbital scroll member located with the shell.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 5, 2014
    Applicant: EMERSON ELECTRIC CO.
    Inventors: Matthew Paul Bingaman, John Patrick Powers
  • Patent number: 8739532
    Abstract: An exhaust heat regeneration system includes: an evaporator for cooling engine cooling water; an expansion device for expanding the refrigerant heated through the evaporator so as to generate a driving force; a condenser for cooling the refrigerant passing through the expansion device to condense the refrigerant; and a pump for pressure-feeding the refrigerant cooled through the condenser to the evaporator, in which: the expansion device is coupled to the pump by a shaft, and the expansion device and the pump are housed within the same casing to constitute a pump-integrated type expansion device; and the pump includes a high-pressure chamber through which the refrigerant to be discharged to the evaporator flows, the high-pressure chamber being provided on the expansion device side, or a low-pressure chamber through which the refrigerant flowing from the condenser flows, the low-pressure chamber being provided on the expansion device side.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: June 3, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiko Kawajiri, Minoru Sato, Kazunori Tsuchino
  • Publication number: 20140147294
    Abstract: A variable capacity compressor assembly (20) configured for variable capacity modulation includes a housing (30), with a compressing mechanism (22) and a driving mechanism (24) disposed within the housing. The compressing mechanism includes compressing members (54, 56) that are shiftable relative to one another between loaded and unloaded states. The driving mechanism includes a line-start brushless permanent magnet motor (26). The line-start brushless permanent magnet motor includes a plurality of permanent magnets (102) that are mounted on, and extend generally axially along, a rotor core body (90) of the motor. Using the motor may reduce manufacture cost, maintain conveniently, and increase reliability.
    Type: Application
    Filed: September 30, 2011
    Publication date: May 29, 2014
    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.
    Inventors: Vincent Fargo, Pingshan Cao, Xin Li, Qiang Liu
  • Publication number: 20140127057
    Abstract: A compressor includes a compression mechanism, a drive shaft, a bearing, and an oil supply passage configured to supply lubrication oil to a clearance between the drive shaft and the bearing. The drive shaft includes a large-diameter shaft part supported by the bearing, and a small-diameter shaft part connected to a lower end part of the large-diameter shaft part. A sealing part is configured to reduced or prevent oil leakage from the bearing includes an oil receiving surface formed in the bearing housing so as to face a stepped surface formed at a boundary between the large-diameter shaft part and the small-diameter shaft part. A clearance is formed between the oil receiving surface and the stepped surface so as to surround an outer periphery of the small-diameter shaft part.
    Type: Application
    Filed: July 10, 2012
    Publication date: May 8, 2014
    Applicant: Daikin Industries, Ltd.
    Inventor: Youhei Nishide
  • Publication number: 20140127055
    Abstract: An interphase insulating sheet for a rotating electric machine includes a pair of insulating portions and a plurality of bridge pieces. The insulating portions perform interphase insulation between coil ends of coils protruding from both ends of a stator core. Each insulating portion has bridge bases. The bridge pieces are each inserted in one of slots. Each bridge piece extends from a bridge base of one of the insulating portions to a bridge base of the other insulating portion. Each insulating portion has an annular shape having stacked parts that include a bridge base and overlap with each other by a predetermined margin. In the circumferential direction of each insulating portion, the dimension of the stacked parts is set to be less than or equal to the dimension of the bridge pieces.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 8, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tatsuya HORIBA, Shinichi OKUYAMA, Taizo HIRANO, Hiroshi FUKASAKU
  • Publication number: 20140127056
    Abstract: A stator having a first set of phase windings formed by wrapping a conducting wire in a first direction about first, second, and third teeth, a second set of phase windings formed by wrapping, separately in a second direction opposite the first direction, the conducting wire about fourth, fifth, and sixth teeth, a first interconnect wire extending between the winding on the first tooth and the winding on the fourth tooth, a second interconnect wire extending between the winding on the second tooth and the winding on the fifth tooth, a third interconnect wire extending between the winding on the third tooth and the winding on the sixth tooth, and a connection that connects the first, second, and third interconnect wires together.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 8, 2014
    Applicant: Emerson Electric Co.,
    Inventors: Wierong Wang, Vincent Fargo
  • Publication number: 20140093408
    Abstract: A motor-driven compressor includes an electric motor, a compression unit, a lead wire, a connection terminal, a cluster block, a housing, a motor drive circuit, a conductive terminal, and a coupling member. The lead wire is extended from a coil end of the stator. The connection terminal is electrically connected to the lead wire. The cluster block accommodates the connection terminal. The conductive terminal electrically connects the connection terminal and the motor drive circuit. The coupling member is arranged between the stator and the cluster block. The cluster block is coupled to the stator by the coupling member. The coupling member is configured to change an coupling position of the cluster block relative to the stator so that the connection terminal faces the conductive terminal.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Taku ADANIYA, Minoru MERA, Shinichi OKUYAMA, Tatsuya HORIBA
  • Publication number: 20140090412
    Abstract: A motor-driven compressor includes a housing assembly, a compression mechanism, an electric motor, a discharge port, an outlet, a discharge passage, discharge valve and a valve device. The compression mechanism is accommodated in the housing assembly. The electric motor drives the compression mechanism. The discharge chamber is formed in the housing assembly. The discharge port is formed in the housing assembly for communication between the discharge chamber and the compression mechanism. The outlet is formed in the housing assembly for communication with an external circuit. The discharge passage is formed in the housing assembly for communication between the discharge chamber and the outlet. The discharge valve is disposed in the discharge chamber for opening and closing the discharge port. The valve device is configured to adjust an opening of the discharge passage.
    Type: Application
    Filed: September 24, 2013
    Publication date: April 3, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi FUKASAKU, Kazuki NAJIMA, Satoru EGAWA
  • Patent number: 8678774
    Abstract: A scroll compressor is provided. A value obtained by multiplying a wrap height (H) by a driving speed (V) may be controlled to be within a range of approximately 500˜1000 mmHz at a low speed driving (less than approximately 35 Hz). The wrap height of the scroll compressor, and the driving speed may be set to be optimum, thereby preventing the scroll compressor from being operated at a speed excessively lower or higher than a predetermined driving speed. This may allow the scroll compressor to be operated at an optimum low speed corresponding to the wrap height, and thus, the compressor and a refrigerating cycle apparatus having the same may have enhanced performances.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: March 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jung Hoon Park, Sung Soon Jang, Jeong Hun Kim, Na Ra Han
  • Patent number: 8678786
    Abstract: A scroll compressor may be provided with a check valve interposed between a balance chamber and a discharge chamber. The check valve may allow balance chamber pressure to remain low during start-up of the compressor. Low balance chamber pressure may allow an orbiting scroll to remain unclamped to a fixed scroll thereby reducing torque required to initiate rotation of the orbiting scroll. After steady-state operational speed is reached the check valve may close and the scrolls may be clamped together to produce a desired steady-state operating condition for the compressor.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: March 25, 2014
    Assignee: Honeywell International Inc.
    Inventors: Benjamin Tang, Ralph Robert Rivet, Ralph Leclercq
  • Patent number: 8672647
    Abstract: A high reliability water injected scroll air compressor is provided with an orbiting scroll, a fixed scroll corresponding to the orbiting scroll, a motor that generates driving force for making the orbiting scroll orbit the fixed scroll, a compressing path from a suction port to a discharge port, and a portion for injecting water into the compressing path. The operation is controlled by a switching operation in which water is injected into the compressing path and then no water is injected. Corrosion, failure of activation, and concerns about wrap contact when water is injected into an air end are avoided by switching the operation with water injection and the operation without water injection so as to prevent water from remaining in the air end.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: March 18, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Natsuki Kawabata, Kazuaki Shiinoki, Hirotaka Kameya, Masakazu Aoki
  • Patent number: 8672646
    Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: March 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumihiko Ishizono, Hideaki Maeyama, Takeshi Fushiki, Taro Kato
  • Publication number: 20140064995
    Abstract: A scroll compression device that enhances the efficiency of workability of magnetization of windings is provided. A scroll compression mechanism 11 for compressing refrigerant and a driving shaft 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, a rotor 39 of the driving motor 13 is connected to the driving shaft 15, the driving shaft 15 is supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and a holder 58 extending in a radial direction is provided in the oil supply path 41 at the back side of the pickup 45.
    Type: Application
    Filed: December 20, 2011
    Publication date: March 6, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Akihiro Hayashi, Katsuki Akuzawa, Kenji Aida, Yoshiaki Nagasawa, Kazuyoshi Sugimoto, Yasunori Kiyokawa, Yoshihiko Nagase
  • Publication number: 20140044574
    Abstract: A scroll compression device that is adaptable to a larger elimination capacity by using a balancer of magnetic material is provided. A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing by a main frame 21, a rotor 39 of the driving motor 13 is connected to the driving shaft 15, the driving shaft 15 is supported in the casing by a bearing plate 8, an upper balancer 63 of magnetic material is secured onto the shaft above the stator 37 of the driving shaft 15, a lower balancer 77 of non-magnetic material is secured to the lower end of the rotor 39, and an auxiliary balancer 64 of non-magnetic material is secured in the gap between the upper end of the rotor 39 and the upper balancer 63.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 13, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Kazuyoshi Sugimoto, Yoshihiko Nagase
  • Publication number: 20140044573
    Abstract: A motor-driven compressor includes an electric motor including a stator and a rotor, wherein the stator includes a stator core and a coil end projecting from the stator core, a rotation shaft, a compression unit, a motor driving circuit, a housing accommodating the compression unit, the electric motor, and the motor driving circuit sequentially arranged in an axial direction of the rotation shaft, a conductor configured to electrically connect the motor driving circuit to the electric motor, a lead extending from the coil end, a connection terminal electrically connecting the conductor to the lead, and a cluster block accommodating the connection terminal. The cluster block is arranged in the housing. The cluster block is coupled to the stator with at least part of the cluster block located inward from the coil end in a radial direction of the rotation shaft.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 13, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi FUKASAKU, Takuro YAMASHITA
  • Publication number: 20140037474
    Abstract: A scroll compression device that prevents scattering of lubrication oil to a discharge pipe side is provided. A cup 48 which is opened at the lower portion thereof and prevents scattering of lubrication oil is disposed on the lower surface of the main frame 21, and an annular insulator 19 having a double wall structure which surrounds windings is disposed on the upper surface of a stator 37. The peripheral wall of the cup 48 is hung between the double walls 19A, 19B of the insulator.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 6, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Akihiro Hayashi, Yasunori Kiyokawa, Kazuyoshi Sugimoto, Yoshihiko Nagase, Katsuki Akuzawa, Kenji Aida, Yoshiaki Nagasawa
  • Publication number: 20140017104
    Abstract: A scroll expander includes a housing, a main port, a high-pressure chamber, an operation chamber, a low-pressure chamber, a subport, a valve portion, an actuator, and a drive shaft. The high-pressure and low-pressure chambers are separated by a partition wall. The main port draws working fluid in the high-pressure chamber into the operation chamber. The subport introduces the working fluid from the high-pressure chamber to the operation chamber so that the volume of the working fluid in the operation chamber is variable. The valve portion selectively opens and closes the subport. The actuator is arranged in the low-pressure chamber. The drive shaft extends through the partition wall and connects the actuator and the valve portion with each other. When the drive shaft is actuated by the actuator, the subport is selectively opened and closed by the valve portion.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 16, 2014
    Inventors: Hidefumi MORI, Masao IGUCHI, Fuminobu ENOKIJIMA, Kojiro TAMARU
  • Patent number: 8628306
    Abstract: Helium enclosed compressor. A compressor and a motor section with stator having coil ends and a rotor, are housed within an enclosed vessel partitioned into discharge and motor chambers by a frame. The compressor section has a stationary scroll having a spiral wrap standing upright at a disk-like panel and an orbiting scroll having a spiral wrap standing upright at a disk-like panel, made to mesh with each other while their wraps face the inside. The orbiting scroll sucks helium gas from a suction port of an outer peripheral portion of the stationary scroll, and discharges helium gas into the discharge chamber from a discharge port of a central portion of the stationary scroll. An inverter controls a number of rotations of the motor section, wherein a plurality of varnish-treated layers which becomes insulating films is formed on the surface of a coil which constitutes the coil ends.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: January 14, 2014
    Assignee: Hitachi Appliances, Inc.
    Inventors: Masao Shiibayashi, Takao Mizuno
  • Patent number: 8622721
    Abstract: A motor-driven compressor includes a housing, a rotary shaft, a compression mechanism and an electric motor. The housing includes a suction port and a discharge port. The compression mechanism is disposed in the housing and compresses refrigerant flowed through the suction port into the compression mechanism and discharges the refrigerant through the discharge port. The electric motor is disposed in the housing and drives the rotary shaft to rotate to drive the compression mechanism. The electric motor includes a rotor fixedly mounted on the rotary shaft and a stator fixed to the housing. The rotor includes a permanent magnet and a compressor interior environment improvement agent containing at least one of an absorbent for absorbing moisture and a neutralizer for neutralizing acid.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 7, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroshi Fukasaku, Atsushi Saito, Masato Takamatsu