Interrelated Or Common Lubricating Or Cooling Means For Pump And Motor Patents (Class 417/372)
  • Patent number: 11913455
    Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: February 27, 2024
    Assignee: Danfoss Commercial Compressors
    Inventor: Patrice Bonnefoi
  • Patent number: 11905958
    Abstract: A vacuuming device comprises a main body, a rotary shaft, a vacuum pump rotor, a motor stator and a motor rotor. An air inlet, an air outlet, an oil storage chamber and a motor chamber are disposed in the main body. The oil storage chamber communicates with the air outlet. The rotary shaft is rotationally connected to the main body. The vacuum pump rotor is fixedly mounted to the rotary shaft and cooperatively forms a stator cavity of the vacuum pump with the inner-wall of the main body. The air inlet and the oil storage chamber communicate with the stator cavity of the vacuum pump respectively. The vacuuming device reduces the cost of manufacturing, optimizes the spatial structure and downsizes the device.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: February 20, 2024
    Inventor: Hong Wang
  • Patent number: 11879465
    Abstract: A compressor includes a motor unit that includes a rotor and a stator, a compressor unit that compresses a refrigerant by rotation of the rotor, and a container that forms an internal space in which the motor unit and the compressor unit are housed, wherein in the rotor, a rotor gas passage through which the refrigerant flows from an under-motor space of the internal space arranged on a side of the motor unit that is close to the compressor unit to an above-motor space of the internal space arranged on a side of the motor unit that is distant from the compressor unit is formed, in the stator, a stator gas passage through which the refrigerant flows from the under-motor space to the above-motor space is formed, and a cross-sectional area of the stator gas passage is 6.0 times or less a cross-sectional area of the rotor gas passage.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 23, 2024
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Kenshi Ueda, Akira Inoue
  • Patent number: 11873824
    Abstract: A blower, comprising: a blower body, having accommodated therein a fan and a drive unit, a rotation shaft of the fan defining a longitudinal axis, and the blower body defining an air inlet; a blow pipe, attached to the blower body and extending along the longitudinal axis, the blow pipe defining an air outlet; and a control unit, for controlling operation of the drive unit. The blower defines an airflow path extending from the air inlet to the air outlet, the control unit being at least partially located in the airflow path, such that when the blower is operating, at least a portion of an airflow entering the air inlet cools the control unit and is then discharged through the air outlet.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: January 16, 2024
    Assignee: Techtronic Cordless GP
    Inventor: Hei Man Lee
  • Patent number: 11841015
    Abstract: A fluid-injected compressor installation (1) comprises a screw compressor (2) with a compression housing (4) in which a pair of compressor rotors (6a, 6b) are mounted. A drive motor (3) drives the compressor rotors. An inlet (7) and an outlet (8) on the screw compressor (2) supply a gas and discharge compressed gas. A gear transmission (20) between the shaft (16) of one of the compressor rotors and the motor shaft (11), includes a driven gear (18) and a driving gear (19); a motor bearing (21) on the motor shaft (11) next to the driving gear (19); and a dynamic seal (25) next to the motor bearing (21), on the drive motor (3) side, such that the motor bearing (21) is between the driving gear (19) and the seal (25).
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: December 12, 2023
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Kristof Adrien Laura Martens, Cornelis Theodorus Philippi
  • Patent number: 11824425
    Abstract: A rotor assembly for an electric machine is described herein. The rotor assembly comprises a body member, a first shaft member and a second shaft member. The body member comprises an inner wall defining a cavity in the body member. The body member is arranged between the first shaft member and the second shaft member. The first shaft member comprises a tube arranged through the first shaft member and extending at least partially in the cavity of the body member. An end of the tube exposed in the cavity comprises a medium dispersion unit configured to disperse a medium in the cavity and the medium dispersion unit comprises an impeller element configured to provide a turbulent flow of the medium.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: November 21, 2023
    Inventors: Emil Håkansson, Johan Andersson, Joakim Ehn, Robin Reinfjell
  • Patent number: 11767838
    Abstract: A compressor includes a shell assembly, a compression mechanism and a suction fitting. The shell assembly defines a chamber. The compression mechanism is disposed within the chamber of the shell assembly and includes a suction inlet. The suction fitting is attached to the shell assembly and extends at least partially into the chamber of the shell assembly. The suction fitting defines first and second openings. The suction fitting directs working fluid through the first opening towards the compression mechanism and the suction fitting directs working fluid through the second opening away from the compression mechanism.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: September 26, 2023
    Assignee: Copeland LP
    Inventors: Robert C. Stover, Keith M. Knippen
  • Patent number: 11754074
    Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: September 12, 2023
    Assignee: Danfoss Commercial Compressors
    Inventor: Patrice Bonnefoi
  • Patent number: 11655820
    Abstract: This disclosure describes new horizontal roller-piston/vane type rotary compressors with novel features such as new lubricating oil circuit designs to provide reliable oil lubrication, and increase tiltability during operation. Also new multi-pump configurations of horizontal compressors are introduced in order to significantly increase redundancy, reliability, and turn down ratio. Rotary compressors may be configured with subsets of the disclosed features to configure those compressors for specific applications.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: May 23, 2023
    Assignee: ASPEN COMPRESSOR, LLC
    Inventors: Kang P. Lee, Kevin Olsen
  • Patent number: 11623234
    Abstract: A fluid dispensing device includes a housing and a reciprocating piston fluid pump coupled to the housing. The reciprocating piston fluid pump includes a piston disposed within a cylinder. The piston is configured to pressurize at least one pumping chamber. A motor is coupled to the housing and connected to the reciprocating piston fluid pump to actuate the piston. A wobble assembly connects the motor to the piston of the reciprocating piston fluid pump. A spray tip connected to an outlet of the at least one pumping chamber.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: April 11, 2023
    Assignee: Graco Minnesota Inc.
    Inventors: David J. Thompson, Jerry D. Horning, William M. Blenkush, Eric J. Finstad, Bradley H. Hines, Marius J. Luczak, Diane Olson, Philip K. Snider, Harold D. Johnson, Jimmy Wing Sum Tam
  • Patent number: 11619216
    Abstract: Disclosed is a compressor including a vibration attenuating member that fixes a driving assembly to be spaced apart from an inner circumferential face of a shell and reduces vibration or noise generated in the driving assembly.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: April 4, 2023
    Assignee: LG Electronics Inc.
    Inventors: Jongwoo Lee, Hangjun Cho
  • Patent number: 11572837
    Abstract: Systems and methods for delivering a buffer fluid to a shaft seal of a gas turbine engine are provided. An exemplary system includes, a buffer fluid source, one or more first conduits providing fluid communication between the buffer fluid source and the shaft seal along a first route, and one or more second conduits providing fluid communication between the buffer fluid source and the shaft seal along a second route different from the first route. A heat exchanger is also disposed along the first route to facilitate heat transfer between buffer fluid in the one or more first conduits and a cooling fluid.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: February 7, 2023
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Daniel Alecu, David Menheere
  • Patent number: 11536268
    Abstract: An electric pump provided with a pump unit configured to discharge working oil by being rotationally driven by an electric motor includes: a drive shaft configured to transmit rotational driving force from the electric motor to a rotor of the pump unit; a rotation-detection shaft provided coaxially with the drive shaft, the rotation-detection shaft being configured to be rotated together with the rotor; and a rotation detector unit configured to detect rotation of the rotation-detection shaft. The rotation-detection shaft has: an engagement portion configured to engage with the rotor; and a detection-target portion facing the rotation detector unit, and an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: December 27, 2022
    Assignees: KYB CORPORATION, NIDEC TOSOK CORPORATION
    Inventors: Kohei Kubo, Tomoyuki Fujita, Koichiro Akatsuka, Yoshiyuki Maki, Koji Higuchi, Yutaka Hashimoto
  • Patent number: 11530694
    Abstract: A module for a vacuum pumping and/or abatement system includes a top side, a bottom side, a front side, a rear side, and two opposing lateral sides, which together define a space. The module comprises an apparatus located wholly within the space and one or more connection points coupled to the apparatus. Each of the connection points is for receiving an input for the apparatus or receiving an output from the apparatus. The one or more connection points are located at the top side. The module has a maximum size in a first system dimension that is equal to a first integer multiple of a fixed system value, the first system dimension being a dimension between the lateral sides. For each connection point, a distance between that connection point and each lateral side in the first system dimension is a respective second integer multiple of the fixed system value.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: December 20, 2022
    Assignee: Edwards Limited
    Inventors: Hammond Deo, Helen Shaw, Craig Leonard Sands
  • Patent number: 11519406
    Abstract: A pump housing of an oil pump includes a suction port that supplies oil to a pump room, a discharge port that discharges oil from the pump room, and a seal portion that suppresses leakage of oil from the pump room to outside of the pump room. A shaft of the oil pump includes a small diameter portion and a large diameter portion having different diameters, the small diameter portion is connected to the inner rotor, and the shaft and the inner rotor integrally rotate. The seal portion is in contact with a side surface of the inner rotor extending in a diameter direction of the shaft, and also extends to a region in the diameter direction on an inner side smaller than the large diameter portion in the diameter direction.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: December 6, 2022
    Assignee: AISIN CORPORATION
    Inventors: Atsuo Isoda, Kenta Ide, Masato Kishi, Kazuya Horikawa, Tokiyuki Tanaka
  • Patent number: 11512688
    Abstract: A module for a vacuum pumping and/or abatement system. The module comprises a frame defining a space, a plurality of facilities inputs configured to receive facilities from a facilities supply, a plurality of facilities outputs configured to output the received facilities out of the module, and a plurality of facilities connection lines located at least partially within the space defined by the frame. The plurality of facilities connection lines connect the facilities inputs to the facilities outputs. The module further comprises a controller configured to control supply of facilities received at the facilities inputs out of the facilities outputs; and control operation of one or more vacuum pumping and/or abatement apparatuses remote from the module.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 29, 2022
    Assignee: Edwards Limited
    Inventors: Hammond Deo, Helen Shaw
  • Patent number: 11421687
    Abstract: A water lubrication screw type air compressor includes a compressor, an air-loop system and a water-loop system. The water-loop system includes a water supply device, a first water-loop unit and a second water-loop unit. The water supply device includes a first water-treatment device to modify the water quality and provide purified water. The first water-loop unit includes a second water-treatment device to modify water quality and reduce the corrosion of metal components. The second water-loop unit includes a water filter to remove the impurities in water and maintain the purity of cycling water. Therefore, the water-loop system in the present disclosure includes multiple water-treatment devices and filters to maintain the water quality. The purified water ensures better cooling, lubrication and air proofing when injected into the compressor.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: August 23, 2022
    Assignee: FU SHENG INDUSTRIAL CO., LTD
    Inventors: Min-Jen Tsai, Chih-Lung Tseng, Feng-Yung Lin
  • Patent number: 11408425
    Abstract: In a vertical cylindrical hermetically sealed container, a rotary compressor includes a motor unit and a compression unit below the motor unit. The compression unit includes a shaft having an eccentric portion, a piston shaped to fit into the eccentric portion, a flat plate-shaped vane pressed against an outer circumferential surface of the piston, and a cylinder that accommodates the piston and the vane and forms a suction chamber and a compression chamber. The rotary compressor stores, in the hermetically sealed container, lubricating oil of which amount causes immersion of a part of the compression unit. The rotary compressor has a hollow portion on a lower end side of the shaft, and has an oil supply diagonal hole that is inclined with respect to a rotation axis of the shaft and causes the hollow portion and an upper end of the eccentric portion to communicate with each other.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: August 9, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shuhei Hoshino, Naoya Morozumi
  • Patent number: 11408426
    Abstract: A compressor include a casing, a drive unit including a stator and a rotor accommodated in the stator, a rotation shaft coupled to the rotor and configured to be rotated by the rotor, a compression unit that is coupled to the rotation shaft, that is lubricated with the oil, and that is configured to compress and discharge the refrigerant, and an oil-separator that is disposed between the discharge part and the drive unit and that is configured to separate the oil from the refrigerant and guide the refrigerant to the discharge part. The oil-separator includes a centrifugal separator configured to rotate together with the rotation shaft and configured to generate a centrifugal force to separate the oil from the refrigerant, and a coupler coupled to the rotor or the rotation shaft and configured to rotate the centrifugal separator based on rotation of the rotating shaft.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: August 9, 2022
    Assignee: LG Electronics Inc.
    Inventors: Nayoung Jeon, Taekyoung Kim, Cheolhwan Kim
  • Patent number: 11371506
    Abstract: In a vertical cylindrical hermetically sealed container, a rotary compressor includes a motor unit and a compression unit below the motor unit. The compression unit includes a shaft having an eccentric portion, a piston shaped to fit into the eccentric portion, a flat plate-shaped vane pressed against an outer circumferential surface of the piston, and a cylinder that accommodates the piston and the vane and forms a suction chamber and a compression chamber. The rotary compressor stores, in the hermetically sealed container, lubricating oil of which amount causes immersion of a part of the compression unit. The rotary compressor has a hollow portion on a lower end side of the shaft, and has an oil supply diagonal hole that is inclined with respect to a rotation axis of the shaft and causes the hollow portion and an upper end of the eccentric portion to communicate with each other.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 28, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shuhei Hoshino, Naoya Morozumi
  • Patent number: 11264866
    Abstract: A pump arrangement includes an axial-flow machine and a drive to convey fluid mounted in a housing. The axial-flow machine is formed by at least one first rotor having permanent magnets, a shaft connected to the first rotor and a stator arrangement with stator teeth distributed concentrically around the shaft axis circumferentially and axially separated from the first rotor by an air gap. The stator teeth have axially-opposite end portions and a tooth core therebetween wound with at least one coil winding. The second end portion, turned away from the first rotor, of each stator tooth forms a tooth root joined to a back plate. The first rotor is an eccentric disk and on the side away from the stator arrangement has an eccentric cam, radially spaced from the shaft axis, and rotatably and torque-transmittingly connected to the drive. An axial-flow machine and a compressor includes the pump arrangement.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: March 1, 2022
    Assignee: Miba Sinter Austria GmbH
    Inventors: Gerold Stetina, Christian Sandner, Thomas Riedl, Dietmar Andessner
  • Patent number: 11053938
    Abstract: Provided a scroll compressor including: a casing, an internal space in which is sealed; a drive motor that is configured with a stator which is located in the internal space, and a rotator which rotates within the stator, and that has an internal flow passage and an external flow passage that passes through the drive motor itself; a rotation shaft that is connected to the rotator of the drive motor; a compression unit that includes a first scroll which is provided below the drive motor, and a second scroll which is engaged with the first scroll; a discharge pipe that communicates with an upper space of the internal space, which is formed above to the drive motor; and an oil separation member that is provided between the drive motor and the discharge pipe, and from whose upper surface a space is formed to a predetermined depth.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: July 6, 2021
    Assignee: LG Electronics Inc.
    Inventors: Cheolhwan Kim, Taekyoung Kim, Kangwook Lee, Byeongchul Lee
  • Patent number: 11028849
    Abstract: A rotation shaft of a scroll compressor that includes an oil flow path formed therein, an upper frame support portion which is inserted into an upper frame, a boss insertion portion which is recessed from an upper surface of the upper frame support portion for insertion of the boss portion, and an oil residual groove which is recessed at a predetermined depth from a bottom portion of the boss insertion portion.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: June 8, 2021
    Assignee: LG ELECTRONICS INC.
    Inventor: Munyoung Lee
  • Patent number: 10907653
    Abstract: Provided is a vacuum pump that prevents the solidification of gas while being operated properly. The vacuum pump includes a rotor that is supported rotatably on a base, a stator that has a thread groove portion, and a heating structure that heats the stator. The heating structure has a spacer that insulates the stator from stator components other than the stator, and a cartridge heater that heats the stator. The distance between a rotor cylindrical portion and the stator at the inlet port side is set to be equal to or greater than the distance between the rotor cylindrical portion and the stator at the outlet port side.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: February 2, 2021
    Assignee: Edwards Japan Limited
    Inventor: Yoshiyuki Sakaguchi
  • Patent number: 10760831
    Abstract: A method of operating a multiple-compressor refrigeration system is provided. This method includes the steps of supplying, via a common supply line, refrigerant gas and oil to a plurality of compressors coupled in series, and attaching an oil flow conduit between adjacent compressors of the plurality of compressors. The oil flow conduit is configured to move oil from a compressor with a relatively higher pressure to a compressor with a relatively lower pressure. The method further includes controlling the pressure for each of the plurality of compressors by regulating a speed at which each of the plurality of compressors operates in order to maintain a pressure differential between the adjacent compressors to facilitate the flow of oil from the compressor with the relatively higher pressure to the compressor with the relatively lower pressure.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 1, 2020
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Bruce A. Fraser, Terry Nares
  • Patent number: 10630130
    Abstract: A compressor includes a shaft, a motor portion, and a compressor portion. The motor portion rotates the shaft. The compressor portion compresses refrigerant by rotation of the shaft. The motor portion has an upper insulator, a stator core, and a winding wire. The upper insulator has a plurality of insulator tooth portions. The stator core has a plurality of stator core tooth portions corresponding to the plurality of insulator tooth portions of the upper insulator. The plurality of stator core tooth portions of the stator core are respectively covered with a plurality of teeth of the upper insulator and are respectively wound around thereof by the winding wire. The insulator tooth portion of the upper insulator has a groove through which lubricant oil poured into the compressor portion passes on a stator core contacting surface which is in contact with the stator core tooth portion of the stator core.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: April 21, 2020
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Takashi Suzuki, Tomoki Nishio
  • Patent number: 10578086
    Abstract: A connector (24) and method of connecting a compressor assembly (10) that increases the pressure of a fluid are described. The compressor assembly (10) includes cylinders (12a,b), crank shaft housings (18a,b), and a motor housing (22). The connector (24) is disposed between the cylinders (12a,b) and the crank shaft housing (18a,b) and configured to engage the cylinders (12a,b) such that vibration during operation of the compressor assembly is reduced through the placement of the connector (24) corresponding to a center of gravity of the compressor assembly (10). The connector may also be used by the compressor assembly as a heat sink, inlet, mount, filter, and/or to provide other functions that improve the operation of compressor assembly.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 3, 2020
    Assignee: Koninklijke Philips N.V.
    Inventor: Varaprasad Ventrapragada
  • Patent number: 10495109
    Abstract: Provided is a vacuum pump for preventing solidification of gas in a thread groove portion, and a heat insulating spacer used in the vacuum pump. The vacuum pump includes a heat insulating spacer that is interposed between a casing and an outer circumferential stator having a thread groove portion, supports the outer circumferential stator coaxially with a rotor in a rotor radial direction, with keeping a gap between the casing and the outer circumferential stator, and has lower thermal conductivity than the casing and the outer circumferential stator.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: December 3, 2019
    Assignee: Edwards Japan Limited
    Inventors: Yoshiyuki Sakaguchi, Norihiro Kurokawa
  • Patent number: 10480511
    Abstract: Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted. The motor shaft drives at least one of the aforementioned two compressor rotors, where the compression housing and the motor housing are connected directly together to form a compressor housing, where the motor chamber and the compression chamber are not sealed off from one another and where the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 19, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Andries Jan F. Desiron
  • Patent number: 10374488
    Abstract: In a compressor for refrigerant having a suction inlet for refrigerant and a pressure outlet for compressed refrigerant, said compressor comprising a compression unit and an electric motor driving said compression unit, said electric motor being a synchronous reluctance motor having a stator and a rotor, said rotor comprising a plurality of stacked disc elements, each disc element having a plurality of flux barriers configured to give the rotor core an anisotropic magnetic structure and formed as apertures in said disc element, it is provided that said flux barriers are arranged in said rotor core to define channels enabling a flow of refrigerant through said rotor core, said rotor is provided with a first support element acting on a first front side of said rotor core and a second support element acting on a second front side of said rotor core, said support elements being provided with cut-out sections and said cut-out sections being designed to uncover at least 70% of the cross section of apertures defined
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 6, 2019
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Franck Repentin
  • Patent number: 10371134
    Abstract: A sealed compressor comprises a sealed container (101) which accommodates an electric component (105) and a compression component (106); wherein the compression component (106) includes a shaft (110) including a main shaft section (111) and an eccentric shaft section (112), a cylinder block (114), a piston (126), and a main bearing unit (120) mounted to the cylinder block (114) and supporting the main shaft section (112) such that the main shaft section (112) is rotatable, a thrust ball bearing (132) mounted to a thrust surface (130) of the main bearing unit (120); and the thrust ball bearing (132) includes a plurality of balls (134) held in a cage (133), an upper race (135) having main surfaces one of which is in contact with upper portions of the balls (134); and a lower race (136) having main surfaces one of which is in contact with lower portions of the balls (134) and; a restricting means for restricting a displacement of the upper race (135) with respect to the shaft (110).
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 6, 2019
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventors: Kousuke Tsuboi, Kiwamu Watanabe, Akihiko Kubota, Hironari Akashi, Terumasa Ide
  • Patent number: 10072661
    Abstract: A rotatory compressor and a refrigerating cycle device are provided. The rotatory compressor includes a lubricating oil in an interior of a hermetically sealed housing, and an electric motor and a rotatory compressing mechanism disposed in the housing. An internal pressure of the housing is substantially equal to a suction pressure of the compressing mechanism. The compressing mechanism includes a first bearing and a second bearing at least one of which includes an exhaust muffler. A refrigerant of the exhaust muffler flows through the sliding vane chamber and is discharged from an exhaust pipe of the compressing mechanism.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 11, 2018
    Assignee: GUANGDONG MEIZHI COMPRESSOR CO., LTD.
    Inventors: Masao Ozu, Weimin Xiang, Jijiang Yu, Hong Guo, Jingtao Yang, Cheng Zhang, Bin Gao, Ling Wang
  • Patent number: 9989046
    Abstract: A roundel structure for a five-compressing-chamber diaphragm pump includes a cylindrical or inverted frustoconical eccentric roundel in an eccentric roundel mount. The cylindrical or inverted frustoconical eccentric roundel includes an annular positioning groove or indentation, a vertical or inverted frustoconical flank and a sloped top ring extending from the annular positioning groove or indentation to the flank. The sloped top ring eliminates the oblique high frequency pull and squeezing phenomena that occurs in a conventional tubular eccentric roundel arrangement.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: June 5, 2018
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Patent number: 9976447
    Abstract: A turbine inlet housing has a main housing body extending about a central axis. An inlet duct delivers air into a cavity within the main housing body. Bolt hole bosses are formed on a downstream face of the inlet housing to receive bolts to secure an outlet housing to the inlet housing. A plurality of the bosses have a ramped surface which extends radially outwardly for a greater extent than a second plurality of bosses. The plurality of ramped bosses extend between the downstream face and the duct. The ramped bosses have a forward boss portion, and a ramped surface at an angle of between 50 and 54 degrees extending from an upstream end of the forward boss portion. A curved surface curves from an upstream end of the ramped surface to merge into the duct. A turbine stage and air cycle machine are also disclosed and claimed.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 22, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Eric Chrabascz, Brent J. Merritt
  • Patent number: 9932978
    Abstract: In a method for controlling the operation of a compressor, the compressor is switched off by a controller in order to prevent thermal damage if an estimated temperature value calculated by the controller exceeds an upper threshold value. The controller calculates a cooling function as a state variable utilizing the estimated temperature value, the cooling function representing the chronological course of the cooling of the compressor. The controller determines the cooling function based on at least one first and one second estimated temperature value which are associated with points of the compressor that are at spatial distances to each other. The calculation of the cooling function is based on a temperature difference between the first and second estimated temperature values.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 3, 2018
    Assignee: Continental Teves AG & Co. OHG
    Inventor: Marek Engelhardt
  • Patent number: 9714589
    Abstract: The present invention refers to a crankshaft (1) for an alternative compressor comprising a main shaft (21) connected to an eccentric pin (2) by means of a peripheral flange (3) containing a lubricating hole (24) extending through said eccentric pin (2) and through at least part of the body of main shaft (21), one of the edges of said hole (24) being on the cylindrical surface (2a) of said eccentric pin (2). With this type of hole, the present invention allows for the use of shafts having extremely low diameters (and, as result, with low viscous loss), even with high eccentricities, whereby an excellent capacity of oil pumping and mechanical strength is maintained.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: July 25, 2017
    Assignee: Whirlpool S.A.
    Inventors: Adilson Luiz Manke, Laerte Capestrini
  • Patent number: 9447725
    Abstract: A compressor includes: a cylinder; a crankcase; a piston arranged within the cylinder and the crankcase; and an outer rotor type motor causing the piston to reciprocate, wherein the outer rotor type motor comprises: a stator; a coil wound around the stator; a rotational shaft; a yoke connected with the rotational shaft; and a permanent magnet secured to the yoke, and the yoke is formed with an air hole.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 20, 2016
    Assignee: SHINANO KENSHI CO., LTD.
    Inventors: Eiji Okada, Kazuhiro Ueda
  • Patent number: 9312736
    Abstract: An electric machine has in a machine housing, a stator and a rotor which is arranged on a motor shaft which is supported on a non-drive side in a bearing unit which has a ball bearing arrangement and is arranged within the machine housing in a radially elastic and axially displaceable manner. The electric machine is preferably coupled on the drive side without a bearing via a rigid shaft coupling to a work machine, in particular to a hydraulic pump.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 12, 2016
    Assignee: Baumueller Nuernberg GmbH
    Inventors: Frank Gutjahr, Peter Lemke
  • Patent number: 9261104
    Abstract: A fluid compression system includes a compressor, an electric motor including a stator and a rotor positioned adjacent to the stator, and a shaft coupled to the rotor to support the rotor for rotation and having a drive end and a non-drive end. A plurality of flow-inducing elements are integrally-formed as part of the shaft and is adapted to induce a flow of fluid from the non-drive end toward the drive end in response to rotation of the shaft.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: February 16, 2016
    Assignee: Ingersoll-Rand Company
    Inventor: Darrell A. Stock
  • Patent number: 9234519
    Abstract: A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: January 12, 2016
    Assignee: Oerlikon Leybold Vacuum GmbH
    Inventors: Thomas Dreifert, Wolfgang Giebmanns, Robert Jenkins, Roland Müller
  • Patent number: 9225221
    Abstract: A stator housing assembly (3) for a pump (2) having a wet-running electric motor (8) includes a stator housing (4) and a can (6), wherein the stator housing (4) and the can (6) are designed as a single component (3). The stator housing assembly (3) also includes at least one engagement element (310) for positively connecting to a pump housing (14).
    Type: Grant
    Filed: February 28, 2009
    Date of Patent: December 29, 2015
    Assignee: Grundfos Management a/s
    Inventors: Steen Mikkelsen, Brian Lundsted Poulsen
  • Patent number: 9217434
    Abstract: A compressor may include a shell, a compression mechanism supported within the shell, a drive shaft engaged with the compression mechanism and a motor. The drive shaft may define first and second passages extending axially within the drive shaft and a third passage extending radially through an outer circumferential surface of the drive shaft and in communication with the second passage. The drive shaft may define an axially extending wall separating the first and second passages. The motor may include a rotor fixed to the drive shaft and a stator supported within the shell. The third passage may be adapted to provide oil to the stator during compressor operation to cool the stator.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: December 22, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: YanChun Han, Ruimin Zheng, Michael M. Perevozchikov, Roy J. Doepker
  • Patent number: 9181855
    Abstract: A turbocharger is disclosed for use with an engine. The turbocharger may include a housing at least partially defining a compressor shroud and a turbine shroud. The turbine shroud may form a volute having an inlet configured to receive exhaust from an exhaust manifold of the engine in a tangential direction. The volute may also include an axial channel disposed downstream of the inlet. The turbocharger may also include a turbine wheel disposed within the turbine shroud that may be configured to receive exhaust from the axial channel. The turbocharger may also include a compressor wheel disposed within the compressor shroud, and a shaft connecting the turbine wheel to the compressor wheel. The turbocharger may also include a nozzle ring disposed within the axial channel at a location upstream of the turbine wheel.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: November 10, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Gary Robert Svihla, Joshua Schueler, Shakeel Nasir, Keith Moravec
  • Patent number: 9157437
    Abstract: A rotary compressor includes an oiling mechanism that contains a vertical fitting hole formed on a countershaft portion in the lower part of the rotating shaft, and an oil pipe having an inlet port at the lower end and an opening at the upper end. The upper part of the oil pipe is press-fitted into the vertical fitting hole. The oiling mechanism further contains a pump vane having a vane portion and a base portion. The vane portion is twisting processed and inserted into the vertical oil hole to provide a space. The base portion is fixed into the lower part of the oil pipe that has an inner diameter smaller than the width thereof.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 13, 2015
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shingo Yahaba, Naoya Morozumi
  • Publication number: 20150147203
    Abstract: A compressor may include a hermetic case to store oil in a lower portion thereof, a compression mechanism part to compress a refrigerant, a power train part to generate a driving force, a rotational shaft to transmit the driving force generated from the power train part to the compression mechanism part and including a hollow portion and a female screw part formed at the hollow portion, and an oil pumping member inserted into the hollow portion of the rotational shaft and including an oil pumping part which moves the oil stored in the lower portion of the hermetic case up and a male screw part which is coupled to the female screw part of the rotational shaft. Since the oil pumping member and the rotational shaft are firmly coupled to each other, the reliability of the oil supplying is improved.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jung Hyoun KIM
  • Patent number: 8978826
    Abstract: Disclosed is a compressor capable of having an enhanced performance by sufficiently supplying oil to components where sliding occurs not only in a high speed driving mode but also in a low speed driving mode. The compressor may increase an oil supply amount in a low speed driving mode, but may restrict an oil supply amount when a rotation speed of a driving motor reaches a predetermined speed in a constant or high speed driving mode, by setting the number of turns of an external groove to be approximately 1.75, and by forming an oil feeder in a conical shape.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jinkook Kim, Kyeongho Kim, Woong Cho, Kyoungjun Park
  • Publication number: 20150064030
    Abstract: A fluid pressure drive unit is to supply a working fluid to and drive a fluid pressure actuator. The fluid pressure drive unit includes a fluid pressure pump for suctioning and discharging the working fluid, an electric motor for driving and rotating the fluid pressure pump, a power transmission mechanism for transmitting a power between a rotation shaft of the fluid pressure pump and a rotation shaft of the electric motor, and a circulation mechanism to be driven by the power transmitted by the power transmission mechanism, the circulation mechanism for guiding a lubricating fluid in the power transmission mechanism and cooling the electric motor.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 5, 2015
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Kazunari Suzuki, Shinji Yakabe
  • Publication number: 20150023818
    Abstract: An air compression system includes an air compression device and a cooling structure. The air compression device includes a liquid-cooled motor and a compressor. The cooling includes a radiator, a cooler, a first liquid conveying tube, a second liquid conveying tube, a third liquid conveying tube, a fourth liquid conveying tube and a cooling liquid. The radiator interconnects the compressor for cooling a lubricating liquid in the compressor; the first liquid conveying tube interconnects the radiator and the cooler; the second liquid conveying tube interconnects the radiator and the cooler; the third liquid conveying tube interconnects the liquid-cooled motor and the cooler; the fourth liquid conveying tube interconnects the liquid-cooled motor and the cooler; and the cooling liquid is filled into the cooler, so as to reduce the space occupied by the cooling structure.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 22, 2015
    Inventors: Feng-Yung LIN, Chih-Chung CHEN, Li-Yung YAN
  • Publication number: 20140363319
    Abstract: A rotary vane vacuum pump includes a pump casing having a gas inlet port and a gas outlet port, a stator provided within the pump casing and defining a cylindrical stator chamber and a cylindrical rotor eccentrically arranged in the stator chamber and equipped with radially movable radial vanes, the vanes cooperating with the inner wall of the stator chamber for pumping a gas from the gas inlet port to the gas outlet port, the pump casing being filled with such an amount of oil that the stator is immersed in an oil bath acting as cooling and lubricating fluid, wherein a motor for driving the pump is further provided, the motor being arranged in a motor casing that is in fluid communication with the pump casing, whereby the motor is immersed in the oil bath.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Elisabetta Carboneri, Gianfranco Cappuzzo, Guiseppe De Palma, Roberto Carboberi
  • Patent number: 8864480
    Abstract: An oil recovery member, a motor mechanism, and a compressor using the same are provided. The oil recovery member is provided to prevent oil rising along a rotational shaft from being discharged with refrigerant, and relative sizes, such as installation positions between the oil recovery member and components adjacent thereto, are restricted. As the oil flow is guided through a passage defined between the oil recovery member and the adjacent components, the oil may be efficiently recovered, so that, an oil circulation rate of a freezing cycle may be reduced and compression efficiency improved.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hae-Ok Jung, Jae-Yeol Lee, Yong-Beom Yeom