With Lubricant, Liquid Seal Or Nonworking Fluid Separation Patents (Class 418/55.6)
  • Patent number: 11891996
    Abstract: A compressor element (1) comprising at least one compression member (2), a housing (3) and a rotatable shaft (4) rotatably connecting the at least one compression member (2) to the housing (3), wherein at least one intermediate element (5) is provided between the rotatable shaft (4) and the housing (3) for facilitating rotation of the rotatable shaft (4), wherein the compressor element (1) further comprises at least one oil injector (6) extending from an inlet port (7) to at least one nozzle (8a, 8b, 8c) via an oil channel (9), wherein the oil channel (9) is shaped to allow a substantially primary flow of oil through the channel (9) for cooling of the at least one intermediate element (5).
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: February 6, 2024
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Fernanda Lato, Michaël Raphaël Angèle Adens, Andrew Aristizabal
  • Patent number: 11879457
    Abstract: An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: January 23, 2024
    Inventor: Brent Haseley
  • Patent number: 11859617
    Abstract: A scroll compressor includes fixed and movable scrolls forming a compression chamber, a back pressure chamber, and outer and inner oil supply mechanisms that supply oil to outer and inner chambers of the compression chamber. The inner oil supply mechanism includes an oil supply portion formed in a sliding surface of the fixed scroll to communicate with a suction region of the compression chamber and a communication port passing through the sliding surface of the movable scroll to communicate with the back pressure chamber. The communication port communicates with the oil supply portion within a predetermined period in which a center position of a suction-side end of the wrap of the movable scroll in a thickness direction is located radially outward of a center position of a space between adjacent turns of a wrap of the fixed scroll, during one rotation of the movable scroll.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: January 2, 2024
    Assignee: Daikin Industries, Ltd.
    Inventor: Yoshitomo Tsuka
  • Patent number: 11852144
    Abstract: The present disclosure relates to a scroll compressor and its lubricating oil supply system.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: December 26, 2023
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Qian Hu, Gang Yao, Xueyou Zhou, Alain Picavet, Arnaud Daussin, Rémi Bou Dargham, David Genevois
  • Patent number: 11846287
    Abstract: A compressor may include non-orbiting and orbiting scrolls, a hub plate, and primary and secondary discharge valve assemblies. The non-orbiting scroll includes a first end plate having primary and secondary discharge passages. The hub plate may be mounted to the non-orbiting scroll and may include a main body and a central hub extending axially from the main body. The central hub may include a recess and a hub aperture. The primary discharge valve assembly may include a retainer and a primary valve member. In a closed position, the primary valve member may restrict fluid flow between the discharge chamber and the primary discharge passage. The secondary discharge valve assembly may include a secondary valve member that selectively allows and restricts fluid communication between the secondary discharge passage and the hub aperture of the central hub.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: December 19, 2023
    Assignee: Copeland LP
    Inventors: Natalie M. Gehret, Jason P. Lochner, Troy Richard Brostrom, Kent E. Logan, Larry Weizman
  • Patent number: 11841013
    Abstract: The scroll compressor includes a fixed scroll (8) having a fixed end plate (11) and a fixed spiral wrap (12) extending from the fixed end plate (11); an orbiting scroll (9) having an orbiting base plate (14) and an orbiting spiral wrap (15) extending from a first face of the orbiting base plate (14), the orbiting spiral wrap (15) of the orbiting scroll (9) meshing with the fixed spiral wrap (12) of the fixed scroll (8) to form compression chambers (18), the orbiting base plate (14) having a flange portion (16) radially extending on at least part of the circumference of the orbiting base plate (14) and beyond an outer wall surface of the orbiting spiral wrap (15); and a first and a second axial stabilizing arrangement (29, 31) configured to axially stabilize the orbiting scroll (9), the first axial stabilizing arrangement (29) being formed between the flange portion (16) of the orbiting base plate (14) and the fixed scroll (8), and the second axial stabilizing arrangement (31) being formed between a portion of
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: December 12, 2023
    Assignee: Danfoss Commercial Compressors
    Inventors: Remi Bou Dargham, Arnaud Daussin, David Genevois
  • Patent number: 11835046
    Abstract: A main bearing housing assembly for a scroll compressor and a scroll compressor having the main bearing housing assembly. The main bearing housing assembly comprises: a main bearing housing; and a thrust plates, the thrust plate being provided at the top of the main bearing housing, and comprising a thrust surface located at the top and in surface contact with the bottom end surface of a scroll assembly of the scroll compressor; the thrust plate comprises: at least one oil inlet hole; a closed oil chamber, the closed oil chamber being formed in the thrust plate; and at least one oil outlet hole, the opening of the at least one oil outlet hole being exposed to the thrust surface; and the at least one oil inlet hole is in communication with the at least one oil outlet hole by means of the closed oil chamber.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: December 5, 2023
    Assignee: Copeland Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Yue Zhang, Yuan Qian
  • Patent number: 11799347
    Abstract: A heel assembly of a submersible oil-filled electric motor contains a thrust bearing and an annular heel having grooves, enabling pumping liquid into the grooves when the heel rotates. The heel assembly is made with a through channel for fluid flow. At least part of the surface of the channel is formed by the inner annular surfaces of the heel and thrust bearing, and the above grooves are arcuate and form at least the first and second group of grooves. In the first group of grooves, each groove is made with an end closed for the fluid flow and with an end open for the fluid flow, located on the outer boundary of the annular heel with an outer diameter D1. In the second group of grooves, each groove is made with an end closed for the fluid flow and with an end open for the fluid flow.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: October 24, 2023
    Assignee: Lex Submersible Pumps FZE Company
    Inventors: Anton Shakirov, Vitaly Koropetskiy, Iaroslav Alekseev, Vadim Batalov, Anton Gorislavskiy, Anton Shkolnyi
  • Patent number: 11795943
    Abstract: A scroll-type fluid machine includes a motor unit and a main body. The motor unit includes a rotor, a stator, a shaft provided with an eccentric portion at a distal end of the shaft and configured to rotate integrally with the rotor, a main bearing configured to support the shaft, and a motor cover configured to house the rotor and the stator. The main bearing is fixed to an inside of the motor cover by a fixing flange. The main bearing supports the shaft and is located between the fixing flange and an end bracket on an opposite side of the main body unit with respect to the fixing flange.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: October 24, 2023
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Shumpei Yamazaki, Yoshiyuki Kanemoto, Takanori Emi
  • Patent number: 11773851
    Abstract: A scroll compressor is disclosed. The scroll compressor may include a suction guide between a refrigerant suction pipe and a high/low pressure separation plate, and the suction guide may be fastened to a non-orbiting scroll or inserted into a suction guide protrusion that extends from the non-orbiting scroll. Accordingly, suction refrigerant may be partially suctioned into a compression chamber by the suction guide in advance before moving to the high/low pressure separation plate, so as to be prevented from coming into contact with the high/low pressure separation plate, while the suction refrigerant may also partially flow toward a drive motor without being suctioned directly into the compression chamber, so as to cool the drive motor, whereby efficiency of the compressor may be improved and an operation range of the compressor may be expanded.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: October 3, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Byeonghun Yu, Sanghun Seong, Jinyong Jang, Byeongchul Lee
  • Patent number: 11767844
    Abstract: The present disclosure discloses a fixed scroll and a scroll compressor with the same. The fixed scroll includes: an end plate; a fixed scroll wrap protruding from one surface of the end plate; and an internal cavity formed in the end plate. By adopting the fixed scroll and the scroll compressor with the fixed scroll according to the embodiment of the present disclosure, a weight of the scroll compressor may be reduced for example.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: September 26, 2023
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Jiangbo Lin, Xiaokun Ji
  • Patent number: 11692547
    Abstract: A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: July 4, 2023
    Assignee: LG Electronics Inc.
    Inventors: Junghoon Park, Sungyong Ahn, Taekyoung Kim, Seheon Choi
  • Patent number: 11686307
    Abstract: A scroll type compressor includes an orbiting scroll including an orbiting wrap and a fixed scroll including a fixed wrap, in which first and second oil channels are respectively configured to supply oil to inner and outer oil channels formed by the orbiting wrap and the fixed wrap. Thus, the scroll type compressor has an oil channel structure that allows oil feeding into to the scrolls.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: June 27, 2023
    Assignee: LG Electronics Inc.
    Inventors: Kyungho Lee, Minho Lee, Kangwook Lee
  • Patent number: 11674510
    Abstract: A scroll compressor includes a refrigerant suction pipe coupled to a discharge cover or a fixed scroll through a casing in a radial direction, a suction passage communicating the refrigerant suction pipe with a compression chamber, and a suction passage opening and closing valve disposed inside the suction passage to be slidable in an axial direction so as to selectively open or close the suction passage. Accordingly, when the compressor is stopped, oil or refrigerant in the casing can be restricted quickly so as not to flow back to the refrigerant suction pipe through a compression unit.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: June 13, 2023
    Assignee: LG Electronics Inc.
    Inventors: Jungsun Choi, Kangwook Lee, Kyungho Lee
  • Patent number: 11668302
    Abstract: A scroll compressor includes a first oil supply passage communicating with a first compression chamber formed between an inner circumferential surface of a fixed wrap and an outer circumferential surface of an orbiting wrap, and a second oil supply passage separated from the first oil supply passage and communicating with a second compression chamber formed between an outer circumferential surface of the fixed wrap and an inner circumferential surface of the orbiting wrap, wherein the first oil supply passage includes an oil supply guide portion provided in a thrust surface of the fixed scroll in contact with the orbiting scroll to define a part of the first oil supply passage, whereby communication between the first and second compression chambers can be prevented, thereby suppressing leakage between the compression chambers, stabilizing behavior of the orbiting scroll, and facilitating formation of the orbiting scroll.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: June 6, 2023
    Assignee: LG Electronics Inc.
    Inventors: Jungsun Choi, Kyungho Lee, Minho Lee
  • Patent number: 11661940
    Abstract: A compressor includes an orbiting scroll, a cooling pipe and a crankshaft, the cooling pipe includes an inlet pipe and an outlet pipe, an axial through hole is provided at a center of the orbiting scroll, a sealing portion of the orbiting scroll is provided with a sealing groove, a mounting hole is provided in the crankshaft, the cooling pipe passes through the crankshaft and enters from a tail portion of the crankshaft, through the mounting hole, the axial through hole and the sealing groove, and then returns back on the same way, and a part of the cooling pipe is arranged in the sealing portion of the orbiting scroll, the cooling pipe moves synchronously with the orbiting scroll and rotates with respect to the crankshaft.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: May 30, 2023
    Assignee: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Gang Lv, Huijun Wei, Qi Fang, Shuanglai Liu, Yuchen Zhao
  • Patent number: 11629713
    Abstract: An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: April 18, 2023
    Inventors: Brent Haseley, Jonathan Hammond, Gary Vreeland, Donald Miller
  • Patent number: 11603840
    Abstract: A scroll compressor according to the present disclosure includes a fixed scroll, an orbiting scroll forming first and compression chambers with the fixed scroll, first and second compression chamber oil supply holes formed through the orbiting scroll to communicate with the first compression chamber and the second compression chamber, respectively, wherein when a section in which the first compression chamber oil supply hole is opened toward the first compression chamber is a first oil supply section and a section in which the second compression chamber oil supply hole is opened toward the second compression chamber, a non-overlap section between the first oil supply section and the second oil supply section may be longer than an overlap section between the first oil supply section and the second oil supply section, so as to prevent communication between the first and second compression chambers, thereby suppressing leakage between the compression chambers.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: March 14, 2023
    Assignee: LG Electronics Inc.
    Inventors: Kyungho Lee, Jungsun Choi, Kangwook Lee
  • Patent number: 11578721
    Abstract: An oil-free scroll air compressor, includes two fixed scrolls and a movable scroll with scroll wraps on both sides. The fixed scrolls each are provided on an end surface thereof with scroll wraps. The movable scroll with scroll wraps on both sides is provided on both end surfaces thereof with scroll wraps. The two fixed scrolls and the movable scroll with scroll wraps on both sides together form two gas compression channels located on two sides. The scroll warps on a same end surface are configured as a double-parallel-groove structure, which further divides the gas compression channel on the same side into two gas compression channels, thereby increasing displacement of the scroll air compressor. After a gas is introduced through a gas inlet on a circumferential surface of the fixed scroll, the gas is compressed in multiple compression channels and then discharged from a center of the scroll air compressor.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: February 14, 2023
    Assignee: Zhejiang University
    Inventors: Shusheng Xiong, Xinchen Weng, Renpu Jiang, Jianbing Shu, Huaxing Hong
  • Patent number: 11566624
    Abstract: A compressor includes first and second scroll members and a bearing housing. The first scroll member includes a first end plate and a first scroll wrap. The second scroll member includes a second end plate that has a first surface, a second surface, and an oil passage. The first surface has a second scroll wrap meshingly engaging the first scroll wrap. The second surface includes an oil slot. The oil passage is in fluid communication with the oil slot. The bearing housing cooperates with the second scroll member to define an interior volume. The second scroll member is movable between a first position in which lubricant in the interior volume is allowed to flow into the oil passage via the oil slot, and a second position in which working fluid in the chamber is allowed to flow into the oil passage via the oil slot.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: January 31, 2023
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Stephen M. Seibel, Natalie M. Gehret, Richard A. Kice
  • Patent number: 11560889
    Abstract: A scroll compressor includes a compressor housing, an orbiting scroll member and non-orbiting scroll member intermeshed to form a compression chamber, a discharge pressure chamber, an intermediate pressure chamber. The housing includes a lower portion, a first intermediate cap, a second intermediate cap, and an upper portion. The discharge pressure chamber configured to receiving a discharge pressure fluid from the compression chamber. The intermediate pressure chamber fluidly connecting an intermediate pressure fluid inlet port and an intermediate pressure fluid injection port of the non-orbiting scroll member. A method injecting an intermediate pressure fluid into a compression chamber of a scroll compressor includes disposing the intermediate pressure fluid in an intermediate pressure chamber. The method also includes injecting the intermediate pressure fluid in the intermediate pressure chamber through the intermediate pressure fluid injection port into the compression chamber.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 24, 2023
    Assignee: TRANE INTERNATIONAL INC.
    Inventor: Scott J. Smerud
  • Patent number: 11519408
    Abstract: The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including a plurality of orbital discs (28) respectively rotatably mounted in circular receiving cavities (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving cavity (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (36), the lubrication system including a plurality of oil reservoirs (43) each arranged in a bottom surface of a respective circular receiving cavity
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: December 6, 2022
    Assignee: Danfoss Commercial Compressors
    Inventors: Arnaud Daussin, David Genevois, Remi Bou Dargham
  • Patent number: 11480176
    Abstract: A scroll compressor includes a compressor housing, an orbiting scroll member, a non-orbiting scroll member, an economizer injection inlet, and a discharge outlet. The orbiting scroll member and the non-orbiting scroll member are disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the compressor housing. The non-orbiting scroll includes a plurality of compression inlet ports. An economizer injection inlet is formed through the compressor housing and in fluid communication with the compression chamber via the compression inlet ports. The discharge outlet is in fluid communication with the compression chamber.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: October 25, 2022
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Derrick Lepak, Torin Allan Betthauser
  • Patent number: 11466688
    Abstract: The present disclosure relates to an electric compressor capable of fixing a shaft seal without a retainer for fixing the shaft seal, and includes a shaft which is rotatably coupled inside a main housing, and a shaft seal which is press-fitted between the shaft and the main housing, seals between the shaft and the main housing by an elastic structure, prevents deformation in the elastic structure with a rigid structure formed integrally with the elastic structure, and maintains the coupled position by a frictional force of the elastic structure.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: October 11, 2022
    Assignee: Hanon Systems
    Inventors: Hong Min Kim, Kweon Soo Lim, Soo Cheol Jeong
  • Patent number: 11326599
    Abstract: A compressor including a compression unit comprising an inlet for sucking gas and configured to compress the sucked gas; and a casing configured to accommodate the compression unit; and a suction guide comprising a passage for guiding the gas from an outside of the casing to the inlet. The compression unit includes a first surface extending from an edge of the inlet, the suction guide includes a second surface extending from an edge of a vent of the passage, and provided in an internal area of the casing to make the first surface and the second surface face each other, and an external end of the first surface and an internal end of the second surface or an internal end of the first surface and an external end of the second surface do not overlap along a direction of an axis of the compressor.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sunghea Cho, Eunsuk Kim, Junghoon Park, Jongcheun Seo, Namkyu Cho
  • Patent number: 11319957
    Abstract: Scroll compressor and a vehicle having the same. The scroll compressor includes: a support and an orbiting scroll assembly, the orbiting scroll assembly being movably provided on the support; a partition structure, provided between the support and the orbiting scroll assembly, a first bearing chamber being formed between the partition structure and the orbiting scroll assembly, a second bearing chamber being formed between the partition structure and the support, the orbiting scroll assembly being provided with a first through hole in communication with the first bearing chamber, and the support being provided with a second through hole in communication with the second bearing chamber; and a first crankshaft), passing through the partition structure, a first communication passage through which the first bearing chamber is in communication with the second bearing chamber is formed between the first crankshaft and the partition structure.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 3, 2022
    Assignee: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Yusheng Hu, Caixia Shan, Gang Lv, Qi Fang, Shuanglai Liu, Shuangshuang Chu, Yuchen Zhao
  • Patent number: 11286930
    Abstract: A scroll compressor includes a housing and a compression mechanism accommodated in the housing. The housing includes a first housing member having an annular partition wall and a second housing member. The partition wall includes a fastened portion that is thicker than other portions in a circumferential direction of the partition wall. The compression mechanism includes a fixed scroll member and an orbiting scroll member. The fixed scroll member includes a fixed spiral wall extending spirally and an outer circumferential wall that surrounds the fixed spiral wall. The outer circumferential wall includes a recess forming portion having a recess recessed inward in the radial direction. The recess is located at a part of the outer circumferential wall opposed to the fastened portion in the radial direction.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 29, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Shinji Tsubai
  • Patent number: 11248608
    Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: February 15, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Kangwook Lee, Taekyoung Kim, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 11248604
    Abstract: In a scroll compressor, a first flow passage is formed in a fixed base plate and a frame to supply oil separated by an oil separating mechanism provided in a sealed container to an oil sump at the bottom of the sealed container. In the fixed base plate, a second flow passage is formed to supply the oil separated by the oil separating mechanism into a compression mechanism.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: February 15, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Wataru Iwatake, Shin Sekiya, Raito Kawamura, Kei Sasaki
  • Patent number: 11236745
    Abstract: A scroll compressor includes a fixed scroll including a first end plate having an injection passage through which refrigerant is supplied to a refrigerant suction chamber. The injection passage includes an outlet passage section that opens into the refrigerant suction chamber and extends linearly. A refrigerant compression chamber is disposed on an extension of the outlet passage section.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 1, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Kato, Akihito Takai
  • Patent number: 11193488
    Abstract: A scroll compressor includes a slider. The slider includes a cylindrical portion and a balance weight portion. The balance weight portion includes a counter weight part, a first main weight component, and a second main weight component. The counter weight part has a first outer circumferential surface that is a partial cylindrical surface about the axis of rotation of the slider. The first main weight component has a second outer circumferential surface that is a partial cylindrical surface about the axis of the cylindrical portion. The second main weight component has a third outer circumferential surface that is located radially outward of the second outer circumferential surface and that is a partial cylindrical surface about the axis of rotation of the slider and an inner circumferential surface that is a partial cylindrical surface about the axis of the cylindrical portion.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 7, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koichi Fukuhara, Tomokazu Matsui, Yuji Takamura
  • Patent number: 11125233
    Abstract: A compressor may include a compression mechanism, a driveshaft, and an oil allocation member. The driveshaft drives the compression mechanism and includes a lubricant passage having an inlet and first and second outlets. The first outlet is disposed vertically higher than the inlet and the second outlet is disposed vertically higher than the first outlet. The oil allocation member is disposed within the lubricant passage. The oil allocation member may define first, second and third channels. The first channel extends through a lower axial end of the oil allocation member. The second channel receives a first portion of the lubricant from the first channel. The third channel receives a second portion of the lubricant from the first channel. The first and second portions of the lubricant may be separated from each other at a location that is vertically higher than the first outlet.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 21, 2021
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Xiaogeng Su, Zhenfei Duan, Yan Chen, Bin Li, Yinglin Yu
  • Patent number: 11092154
    Abstract: A scroll compressor includes a first scroll including a fixed wrap, a second scroll comprising an orbiting wrap, and a boss portion, a rotating shaft including an eccentric portion inserted into the boss portion of the second scroll to transfer a rotational force, a frame having a shaft hole, a first bearing provided between the shaft hole of the frame and an outer circumferential surface of the rotating shaft, and a second bearing provided between an inner circumferential surface of the boss portion and an outer circumferential surface of the eccentric portion of the rotating shaft, wherein a differential pressure space portion is formed between the first bearing and the second bearing in a radial direction, and has a radial cross section wider than a radial gap between an inner circumferential surface of the second bearing and the outer circumferential surface of the eccentric portion.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: August 17, 2021
    Assignee: LG Electronics Inc.
    Inventors: Yoonsung Choi, Jinho Kim, Jaeha Lee
  • Patent number: 11002272
    Abstract: An apparatus for compressing gas-phase fluid including a housing having a wall, a stator having a base plate and a helical wall extending from one side of the base plate, and an orbiter having a base plate and a helical wall extending therefrom. The base plates are disposed such that the wall of the stator and the wall of the orbiter engage with each other to define closed working chambers. The volumes and positions of the working chambers are changed in response to the motion of the orbiter. The apparatus includes a guide device having an opening formed in the base plate of the orbiter and a pin coupled to the housing. The pin engages the opening. A sliding element is disposed between the wall of the housing and the orbiter and coupled to the wall. The pin is pressed into an opening formed in the sliding element.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: May 11, 2021
    Assignee: HANON SYSTEMS
    Inventors: Thomas Klotten, Dennis Kroecker
  • Patent number: 10947975
    Abstract: An electric refrigerant drive, in particular a refrigerant compressor for an air conditioner of a motor vehicle, has an electric motor drive module and a compressor module coupled to the drive module. The drive module has a motor housing which houses an electric motor with a rotatable motor shaft and is joined to an end shield. The drive module also comprises a fluid-tight housing partition opposite the end shield, thereby forming an electronic housing that receives an electronic motor unit and is closed by a housing cover. The compressor module has a compressor housing which is attached to the end shield of the motor housing of the drive module and which receives a compressor part that is coupled or can be coupled to the drive module so as to be driven.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: March 16, 2021
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
    Inventor: Marcus Podack
  • Patent number: 10920774
    Abstract: A scroll compressor includes a crank shaft, an orbiting scroll, and a frame. The crank shaft has a lubricant channel. The orbiting scroll has an inner channel and a lubricant channel groove. The inner channel allows the lubricant supplied through the crank shaft to flow outward. The lubricant channel groove has an annular shape and allows the lubricant supplied through the inner channel to be supplied to the thrust surface. The lubricant channel groove is formed such that the lubricant channel groove stays within a region of the thrust surface while the orbiting scroll is orbiting.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: February 16, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomokazu Matsui, Kohei Tatsuwaki, Yuji Takamura, Shinya Morita
  • Patent number: 10907634
    Abstract: A scroll compressor is provided that may include a first compression chamber, a second compression chamber separated from the first compression chamber, and having a greater compression ratio than the first compression chamber, a first discharge port that communicates with the first compression chamber and provided with a first discharge inlet and a first discharge outlet, and a second discharge port separated from the first discharge port, that communicates with the second compression chamber, and provided with a second discharge inlet and a second discharge outlet, the discharge outlet of at least one of the first discharge port or the second discharge port may have a larger sectional area than the discharge inlet. Accordingly, a discharge delay in each compression chamber may be prevented in advance, thereby suppressing compression loss.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 2, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongkyu Choi, Kangwook Lee, Cheolhwan Kim
  • Patent number: 10865792
    Abstract: A scroll compressor includes a first scroll member, a second scroll member, and an aerostatic thrust bearing. The aerostatic thrust bearing forms a layer of gas between the second scroll member and a fixed supporting member to support the second scroll member as the second scroll member rotates and/or orbits. Also disclosed is a method of supporting a rotating/orbiting scroll member in a scroll compressor. The method including supplying pressurized gas to an aerostatic thrust bearing such that a layer of gas is formed between the rotating/orbiting scroll member and a fixed supporting member.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 15, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Jay H. Johnson, Michael G. Benco, James Joseph Wiltzius
  • Patent number: 10851779
    Abstract: A scroll compressor includes an orbiting scroll including an end plate and a spiral element on the end plate, a fixed scroll including an end plate and a spiral element on the end plate, and an Oldham ring including a support. The scroll compressor satisfies a relation of ?1>?2, where ?1 denotes each of the axial length of a gap between the tip of the spiral element of the orbiting scroll and the end plate of the fixed scroll and a gap between the tip of the spiral element of the fixed scroll and the end plate of the orbiting scroll, and ?2 denotes the axial length of a gap between the end plate of the orbiting scroll and the support of the Oldham ring.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: December 1, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuhei Koyama, Koji Masumoto, Tetsuro Hirami
  • Patent number: 10830237
    Abstract: A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 10, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Nara Han, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 10746174
    Abstract: The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a drive shaft (16); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including orbital discs (28) respectively arranged in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) cooperating with an inner circumferential bearing surface (32) of the respective circular receiving hole (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (50), the lubrication system including lubrication passages (41) formed within the support arrangement (5), each lubrication passage (41) including an oil outlet aperture (41.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 18, 2020
    Assignee: Danfoss Commercial Compressors
    Inventors: Arnaud Daussin, Sebastien Denis, David Genevois, Remi Bou Dargham
  • Patent number: 10715002
    Abstract: An ammonia-resistant motor used for a closed-type refrigerating compressor comprising a stator and a rotor; during work, the stator and the rotor of the motor are immersed in the ammonia refrigerant; the winding, the slot wedge and the slot insulation are locked through self-lock fasteners, thereby preventing them from moving in the slot; the self-lock fasteners are fluorine plastic fasteners; the end portion of the motor winding is wound with a layer or multi-layers of fluorine plastic tape, and the outer layer of the fluorine plastic tape is provided with a binding tube; the binding tube is made from fluorine plastic, and the tensile strength of the binding tube is greater than that of the fluorine plastic tape.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 14, 2020
    Assignee: Suzhou Better Technology Co., Ltd.
    Inventors: MaoQin Hong, ZeNong Cai, ZhiMin Zhuang, HaiYang Du, Hao Yu
  • Patent number: 10563891
    Abstract: A scroll compressor is disclosed. The scroll compressor includes a compressor housing; an orbiting scroll member disposed within the housing; a non-orbiting scroll member disposed within the housing, wherein the orbiting scroll member and the non-orbiting scroll member are intermeshed thereby forming a compression chamber within the housing; and an endplate secured to the non-orbiting scroll member. The endplate includes a check valve surface configured to provide a stop for a check valve of the scroll compressor, a radial sealing surface configured to receive a radial seal, an unloading mechanism surface configured to provide a stop for an unloading mechanism, and a pressure chamber for controlling the unloading mechanism, the endplate also including an aperture that fluidly connects the compression chamber and a discharge chamber of the scroll compressor.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 18, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Scott J. Smerud, Eric S. Mlsna, Torin Allan Betthauser, Adam P. Kimball
  • Patent number: 10527041
    Abstract: Disclosed herein is a compressor with an oil return unit. The compressor includes: a main housing; a turning scroll which is turnably mounted to the housing; a fixed scroll which engages with the turning scroll and forms a compression chamber; an auxiliary housing which includes a discharge space communicating with an outlet side of the fixed scroll, and a collection space in which oil collected in the discharge space is temporarily stored; an oil return passage which is formed in the fixed scroll and communicates with the collection space; and an oil supply passage which is formed in the main housing, communicates with the oil return passage, and diverges such that oil is supplied to at least two places.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: January 7, 2020
    Assignee: Hanon Systems
    Inventors: Chi Myeong Moon, Kweon Soo Lim, Jae Hoon Lim, Soo Cheol Jeong
  • Patent number: 10527039
    Abstract: A scroll compressor is provided that may include a communication hole that penetrates from a side surface of a non-orbiting scroll adjacent to a discharge side to a thrust bearing surface between the non-orbiting scroll and an orbiting scroll, and a decompression member having a radial sectional area smaller than a radial sectional area of the communication hole and inserted into the communication hole. A refrigerant discharged to a discharge space may be introduced to a suction space through the passage between the communication hole and the decompression member, thereby preventing a high vacuum state of a compression chamber, and a refrigerant passing through the communication hole may be decompressed during a normal operation to restrain leakage of the refrigerant to the thrust bearing surface between the non-orbiting scroll and the orbiting scroll, thus increasing compression efficiency.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 7, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaesang Lee, Sanghun Seong, Byeongchul Lee
  • Patent number: 10480509
    Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls to form a fluid chamber. The fixed scroll has an end plate, an outer peripheral wall, and a wrap. The movable scroll has an end plate and a wrap. A scroll oil groove is formed in a sliding contact surface of the outer peripheral wall. Lubricating oil having a high pressure corresponding to a discharge pressure of the compression mechanism is fed into the scroll oil groove. A scroll oil groove is formed in a sliding contact surface of the movable scroll, which slides on the outer peripheral wall. The fixed and movable scroll oil grooves communicate with each other without communicating with the fluid chamber in a first operation. The movable scroll oil groove simultaneously communicates with the fixed scroll oil groove and the fluid chamber in a second operation after the first operation.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: November 19, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuhiro Murakami, Yasuo Mizushima, Ryouta Nakai, Katsumi Katou
  • Patent number: 10458409
    Abstract: A compressor may include a shell, a bearing housing, an orbiting scroll, and a non-orbiting scroll. The bearing housing is supported within the shell and includes a central body and a plurality of arms. Each arm extends radially outwardly from the central body and has a first aperture. The orbiting scroll is supported on the bearing housing. The non-orbiting scroll is meshingly engaged with the orbiting scroll and includes a plurality of second apertures. Each second aperture receives a plurality of bushings and a fastener. The fastener extends through the bushings and into a corresponding one of the first apertures in the bearing housing to rotatably secure the non-orbiting scroll relative to the bearing housing while allowing relative axial movement between the non-orbiting scroll and the bearing housing.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: October 29, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Xiaogeng Su, Srinivasan Ramalingam
  • Patent number: 10294942
    Abstract: A compressor includes a casing with an oil retention space, an electric motor, a driveshaft, a compression mechanism, an oil supply passage, an oil discharge passage, an oil supply pump, and an oil discharge pump. The compression mechanism has a movable part, and an upper housing forming a crank chamber. The upper housing has an upper bearing that pivotally supports the driveshaft below the crank chamber. The oil supply passage leads oil in the oil retention space to the crank chamber. The oil discharge passage includes a main oil discharge passage, and a first inflow passage communicating between the main oil discharge passage and the crank chamber. An oil-recovery space is formed in a lower part of the upper housing below the crank chamber. The oil discharge passage includes a second inflow passage communicating between the main oil discharge passage and the oil-recovery space.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 21, 2019
    Assignee: Daikin Industries, Ltd.
    Inventor: Toshiyuki Toyama
  • Patent number: 10107290
    Abstract: This scroll compressor is a scroll compressor provided with a housing and a scroll compression mechanism provided inside the housing, the interior of the housing being provided with an discharge cavity for discharge high-pressure gas compressed by the scroll compression mechanism, wherein: the housing is configured from a front housing and a rear housing for closing the rear-end opening of the front housing; a fixed scroll is integrally molded on the rear housing with a rib part interposed therebetween; the discharge cavity, into which an discharge port for discharging high-pressure gas opens, is provided around the periphery of the rib part; and an discharge valve for opening and closing the discharge port is installed in the discharge cavity.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: October 23, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Takayuki Hagita, Masafumi Hamasaki
  • Patent number: 10094600
    Abstract: A compressor may include a shell assembly, a compression mechanism and a conduit. The shell assembly may include a fitting through which fluid is received from outside of the compressor. The compression mechanism may be disposed within a chamber defined by the shell assembly. The conduit may extend through the chamber between the fitting and a suction inlet of the compression mechanism and transmit at least a portion of the fluid from the fitting to the suction inlet. The conduit may include an inlet that may be spaced apart from the fitting and an outlet that may engage the compression mechanism.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: October 9, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov