Helical Working Member, E.g., Scroll Patents (Class 418/55.1)
  • Patent number: 11493040
    Abstract: A damping apparatus for an exhaust valve in a compressor, an exhaust valve assembly having the damping apparatus, and a compressor using the exhaust valve assembly. The damping apparatus comprises a fixed body; the fixed body comprises an exhaust hole comprises an exhaust hole through which a compression cavity and an exhaust cavity are in fluid communication with each other; the exhaust hole comprises an inlet, an outlet, and an intermediate cavity provided between the inlet and the outlet and allowing the inlet and the outlet to be in fluid communication with each other; the intermediate cavity is configured to enable the backflow of the gas from the exhaust cavity to form a vortex in the intermediate cavity. The damping apparatus has advantages of reducing the force and frequency of impacts on an exhaust valve plate, and prolonging the service life of the valve plate.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 8, 2022
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Hongwei Zou, Xuan Liu
  • Patent number: 11473577
    Abstract: A compression chamber includes the compression chamber partitioning member, an intermediate pressure chamber guides an intermediate pressure working fluid before injection to the compression chamber, and the intermediate pressure chamber and the compression chamber face each other with a compression chamber partitioning member interposed between the intermediate pressure chamber and the compression chamber. Further, the intermediate pressure chamber includes an intermediate pressure chamber inlet through which an intermediate pressure working fluid flows, an injection port inlet of an injection port through which the intermediate pressure working fluid is injected into the compression chamber, and a liquid reservoir formed at a position below the intermediate pressure chamber inlet, and the liquid reservoir is formed by the compression chamber partitioning member.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: October 18, 2022
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroaki Nakai, Atsushi Sakuda, Takashi Morimoto
  • Patent number: 11441565
    Abstract: A scroll compressor includes a drive motor, a rotary shaft coupled to the drive motor, a main frame disposed below the drive motor, a fixed scroll disposed below the main frame, an orbiting scroll disposed between the main frame and the fixed scroll and eccentrically coupled to the rotary shaft, and an Oldham's ring coupled to the main frame and the orbiting scroll and configured to restrict rotation of the orbiting scroll relative to the fixed scroll. The Oldham's ring includes: a ring body, a first key that receives a first fixing boss of the ring body and that is configured to couple to the main frame, and a second key that receives a second fixing boss of the ring body and that is configured to couple to the orbiting scroll.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: September 13, 2022
    Assignee: LG Electronics Inc.
    Inventors: Sang Baek Park, Jungsun Choi, Cheol Hwan Kim
  • Patent number: 11434910
    Abstract: A compressor may include first and second scrolls, a hub plate and a valve member. The first scroll includes an end plate having a primary discharge passage and a secondary discharge passage. The secondary discharge passage is disposed radially outward from the primary discharge passage. The hub plate is mounted to the first scroll and has a hub discharge passage extending therethrough. The hub discharge passage is in fluid communication with the primary discharge passage. The valve member is movable between open and closed positions. The valve member restricts fluid flow through the secondary discharge passage when in the closed position to restrict fluid communication between the secondary discharge passage and the hub discharge passage. The valve member allows fluid flow through from the secondary discharge passage when in the open position to allow fluid communication between the secondary discharge passage and the hub discharge passage.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: September 6, 2022
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 11434909
    Abstract: Provided is a compressor apparatus comprising: a casing defining appearance of the apparatus; and a drive portion coupled to an inner circumferential surface of the casing and configured to rotate a rotatable shaft; a compression portion coupled to the rotatable shaft and configured to compress fluid, wherein the compression portion apparatus is characterized in that the drive portion and the compression portion are fixed to the fastening member which is detachably attached to at least one of the side face of the drive portion or the side face of the compression portion and thus, the combination of the drive portion and the compression portion is coupled to an inner circumferential surface of the casing. Further, provided is a manufacturing method of the compression portion apparatus.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: September 6, 2022
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Jungsun Choi, Cheolhwan Kim
  • Patent number: 11365733
    Abstract: A fixed scroll for a scroll compressor includes a plurality of pillar portions extending axially from a first face of the fixed scroll to an opposing second face thereof. Each of the plurality of the pillar portions is spaced radially outwardly of a spiral structure at least partially defining a compression chamber of the scroll compressor. The fixed scroll further includes an annular array of spaced flow openings into the compression chamber of the scroll compressor with each of the flow openings formed between adjacent ones of the pillar portions.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: June 21, 2022
    Assignee: HANON SYSTEMS
    Inventors: Dirk Gutberlet, Kadir Dursun, Michael Friedl
  • Patent number: 11353022
    Abstract: A compressor may include a shell assembly, orbiting and non-orbiting scrolls, a bearing housing, a bushing, a damper, and a fastener. The bearing housing includes a first aperture. The bushing may include an axial end abutting the bearing housing. The bushing may extend through a second aperture of the non-orbiting scroll. The bushing may include a third aperture. The damper may be received in a pocket that may be defined by and disposed radially between an outer diametrical surface of the bushing and an inner diametrical surface of the non-orbiting scroll. The damper may be at least partially disposed within the second aperture and may encircle the second portion of the bushing. The fastener may include a shaft portion and a flange portion. The shaft portion may extend through the third aperture and into the first aperture. The flange portion may contact a first axial end of the damper.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: June 7, 2022
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: JonYeon Oh, Joseph M. Shepherd, Brian J. Knapke, Srinivasan Ramalingam, Gui Lin, Steven J. Baker, Miles E. Strand
  • Patent number: 11339786
    Abstract: A scroll type positive displacement assembly includes a first scroll and a second scroll, where the second scroll is configured to orbit with respect to a center of the first scroll without rotating with respect to the first scroll. Together, the first scroll and the second scroll define a compression chamber between two seal points where the first scroll and the second scroll contact one another as the second scroll orbits with respect to the first scroll during a compression cycle, and the two seal points come together proximate to a discharge port between the first scroll and the second scroll such that there is at least substantially no dead space between the first scroll and the second scroll at an end of the compression cycle. For example, the two seal points remain in sealing contact during at least one hundred and eighty (180) degrees of the compression cycle.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: May 24, 2022
    Inventor: Mark W. Wood
  • Patent number: 11306720
    Abstract: Rotary positive displacement machines with trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator are described. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some multi-stage embodiments, the rotor-stator geometry remains substantially constant along the axis of the rotary machine. In other multi-stage embodiments, the rotor-stator geometry varies along the axis of the rotary machine.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: April 19, 2022
    Assignee: Rotoliptic Technologies Incorporated
    Inventors: Greg John Montie, Bryan Allen Callaway
  • Patent number: 11300125
    Abstract: Embodiments to help detect operation conditions of a compressor of a TRU in real time by a genset are disclosed. The operation conditions of the compressor can be determined by monitoring a parameter pattern of the genset, such as value changes of a horsepower, a torque, an exhaust temperature, fuel consumption and/or a RPM of a prime mover of the genset, or a current drawn from a generator of the genset, over a period of time. In one embodiment, when a scroll compressor is used in the TRU, the scroll compressor may start a periodical load/unload duty cycle when the TRU reaches its setpoint. The periodical load/unload duty cycle of the scroll compressor can be detected based on a corresponding fluctuation pattern in genset parameters. When this periodically fluctuating pattern of ECU parameters and/or current drawn is detected, the prime mover can be switched to a low operation speed.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: April 12, 2022
    Assignee: Thermo King Corporation
    Inventors: Randall Scott Burnham, David Jon Renken, Erich Albert Lucht, Cullen Evan Hall
  • Patent number: 11264863
    Abstract: A rotor (10) of an electric machine has a shaft (11) a laminated core (12) arranged on the shaft (11) and balancing bodies (13) arranged on the shaft (11). The balancing bodies (13) have an aperture (15) situated outside the center of gravity. Each balancing body (13) is mounted by way of the aperture (15) on the shaft (11) of the rotor (10) in a defined angular position. Positioning sleeves (20) are arranged on the shaft (11) to define a distance between bearings (16, 17) of the shaft (11) and the laminated core (12) or the balancing bodies (13) and to provide an anti-rotational safeguard for the balancing bodies (13).
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 1, 2022
    Assignee: Dr. Ing. h. c. F. Porsche AG
    Inventor: Peter Wurster
  • Patent number: 11225968
    Abstract: A scroll compressor including a center housing; a front housing fastened to the center housing and forming a suction chamber; a rear housing fastened to the center housing and forming a compression mechanism accommodation space. Fixed scroll is in the compression mechanism accommodation space. An orbiting scroll interposes between the center housing and the fixed scroll forming a compression chamber together with the fixed scroll. Fixed scroll may include a fixed scroll end plate and a fixed scroll side plate protruded from outer circumferential portion of fixed scroll end plate, fastened to the center housing, and forming orbiting space of orbiting scroll. Outer circumferential portion of the center housing may be formed with an inflow hole for communicating with the suction chamber. Distal end surface of the fixed scroll side plate is formed with a suction port for guiding the refrigerant of the inflow hole to the compression chamber.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: January 18, 2022
    Assignee: Hanon Systems
    Inventors: Kyung Jae Lee, Jeong Ki Seo
  • Patent number: 11221009
    Abstract: A scroll compressor including an orbiting scroll having a small diameter compared to a case in which an oil groove is provided in a ring shape and constantly communicates with an outlet of an oil passage. The scroll compressor includes a fixed scroll and an orbiting scroll configured to orbit in engagement with the fixed scroll. The fixed scroll includes an outlet of an oil passage configured to communicate with an oil tray storing lubricant, the outlet of the oil passage connected to a sliding surface of the orbiting scroll. The orbiting scroll includes a plurality of oil grooves configured not to communicate with each other so as to supply the lubricant to a sliding surface of the fixed scroll, the plurality of oil grooves configured to communicate with the outlet at least once and not to communicate with the outlet at least once while the orbiting scroll rotates once.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: January 11, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Takashi Uekawa
  • Patent number: 11215181
    Abstract: A scroll compressor according to the present invention includes a casing, an orbiting member provided within the casing and performing an orbiting motion, a non-orbiting member forming a compression chamber together with the orbiting member, the compression chamber having a suction chamber, an intermediate pressure chamber and a discharge chamber, a communication passage communicating inside and outside of the compression chamber with each other, an opening/closing valve assembly provided outside the non-orbiting member within the casing and opening and closing the communication passage, and a switching valve assembly provided within the casing and operating the opening/closing valve assembly, whereby a facilitated fabrication, improved valve responsiveness and a relaxed restriction for a specification of a valve can be achieved, and also an over-compression can be prevented by an installation of a check valve, and an assembling efficiency can be improved by installing two valve assemblies outside the non-orb
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: January 4, 2022
    Assignee: LG Electronics Inc.
    Inventors: Honggyun Jin, Sangwoo Joo
  • Patent number: 11201522
    Abstract: A compressor includes a housing, a stationary block, a drive shaft, a motor mechanism, a stationary scroll, and a movable scroll. The stationary block is fixed to the housing and is arranged between the motor mechanism and the movable scroll. The motor mechanism includes a stator and a rotor. The drive shaft is provided with a balance weight. The balance weight extends in the radial direction of the drive shaft and is arranged between the stationary block and the stator. The stator includes a stator core and a coil end. The balance weight covers a part of the coil end in the radial direction and the axial direction of the drive shaft.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 14, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya Hattori, Takumi Maeda, Takuro Yamashita, Shinji Koike
  • Patent number: 11199189
    Abstract: Provided is a co-rotating scroll compressor comprising a synchronous drive mechanism that can achieve a long life. The compressor comprises a driving side scroll member (90) driven to rotate about a driving side rotation axis CL1, a driven side scroll member (70) driven to rotate about a driven side rotation axis CL2, a hollowed drive shaft (6) that is connected to the driving side scroll member (90), and driven by a motor (5) to rotate, and a driven shaft (20) that is disposed inside the drive shaft (6), and has one end connected to the drive shaft (6) via a first flexible coupling (21) and the other end connected to the driven side scroll member (70) via a second flexible coupling (22).
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: December 14, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takuma Yamashita, Takahide Ito, Keita Kitaguchi, Makoto Takeuchi, Hirohumi Hirata
  • Patent number: 11136981
    Abstract: A scroll compressor may include a rotational shaft, the rotational shaft including a first frame support having an inner circumferential surface, into which a boss of a first scroll is inserted, and an outer circumferential surface that forms an outer surface of the rotational shaft; and at least one guide hole that extends from the inner circumferential surface to the outer circumferential surface.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: October 5, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Sungyong Ahn, Jinho Kim, Junghoon Park, Junchul Oh, Byeongchul Lee, Jaeha Lee, Seheon Choi
  • Patent number: 11131306
    Abstract: The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor, with a high-pressure zone which comprises a high-pressure chamber, with a low-pressure chamber and with an orbiting displacement spiral, which engages into a counter spiral such that between the displacement spiral and the counter spiral compression chambers are formed, in order to receive a working medium, wherein between the low-pressure chamber and the displacement spiral a counter pressure chamber is formed.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: September 28, 2021
    Assignee: OET GmbH
    Inventors: Frank Obrist, Christian Schmälzte, Christian Busch
  • Patent number: 11111920
    Abstract: A suction valve assembly for a compressor and a compressor having a suction valve assembly. The suction valve assembly may include a body that connects a compression chamber of the compressor with an accumulator, and a lifting/lowering valve provided in the body. The lifting/lowering valve may be moved upward by a pressure difference between an inner space of the accumulator and an inner space of the compression chamber when operation of the compressor stops and block reverse flow of oil to the accumulator. Accordingly, when operation of the compressor stops, compressed oil may be prevented from reversely flowing to the accumulator.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: September 7, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Donggeun Lee, Kyojin Kim
  • Patent number: 11098717
    Abstract: An eccentric bush assembly structure of a scroll compressor, in which an orbiting scroll is eccentrically coupled to a rotary shaft of a drive motor, including a bush body rotatably coupled to the orbiting scroll while being pinned to the rotary shaft of the drive motor by an eccentric shaft, the bush body having a friction prevention groove formed in a surface facing a tip surface of the rotary shaft so as not to come into frictional contact with the tip surface.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: August 24, 2021
    Assignee: HANON SYSTEMS
    Inventors: In Guk Hwang, Kweon Soo Lim, Soo Cheol Jeong
  • Patent number: 11098715
    Abstract: In an asymmetrical scroll compressor, at least one injection port through which an intermediate-pressure refrigerant is injected into a first compression chamber and a second compression chamber, at least one injection port penetrating an end plate of a fixed scroll at a position where the injection port is open to the first compression chamber or the second compression chamber during a compression stroke after a suction refrigerant is introduced and closed. Further, the amount of a refrigerant injected from an injection port into the first compression chamber is made more than the amount of a refrigerant injected from the injection port into the second compression chamber.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: August 24, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroaki Nakai, Atsushi Sakuda
  • Patent number: 11041494
    Abstract: A pin-ring mechanism that transmits driving force to cause a driving-side scroll member and a driven-side scroll member to perform rotational movement in a same direction at a same angular velocity is provided. A driving-side end plate includes a ring member installation hole into which a ring member is inserted and installed. The ring member installation hole includes a non-wall-side hole part and a wall-side hole part. The non-wall-side hole part is formed from a non-wall-side surface and has a diameter corresponding to an outer diameter of the ring member. The wall-side hole part is formed from a wall-side surface and has a diameter smaller than the outer diameter of the ring member.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: June 22, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hirofumi Hirata, Takahide Ito
  • Patent number: 11015600
    Abstract: A scroll compressor including an orbiting scroll and a fixed scroll. A compression chamber is formed by combining a fixed-scroll volute of the fixed scroll and an orbiting-scroll volute of the orbiting scroll. Each of sub-discharge ports of the fixed scroll brings any one of a first compression chamber and a second compression chamber of a compression chamber, the first compression chamber being defined by an inward-facing surface of the fixed-scroll volute and an outward-facing surface of the orbiting-scroll volute, the second compression chamber being defined by an outwardfacing surface of the fixed-scroll volute and an inward-facing surface of the orbiting scroll volute, and a discharge side into communication with each other.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: May 25, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kohei Tatsuwaki, Tomokazu Matsui, Shuhei Koyama, Yuji Takamura
  • Patent number: 11008867
    Abstract: A scroll compressor may include a casing configured to receive a rotation shaft and a driving unit; a compression unit provided with a frame configured to rotatably support the rotation shaft, a first scroll fixed to the casing, and a second scroll configured to be connected to the rotation shaft and engaged with the first scroll. An oldham ring is provided with a plurality of key portions to guide the second scroll to perform an orbiting movement, wherein at least one of the frame, the first scroll, and the second scroll includes a respective key groove formed to receive a respective key portion; and a respective wear-resistant member mounted to cover an inner surface of the respective key groove in contact with the respective key portion.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: May 18, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Kitae Jang, Sanghun Seong, Jinyong Jang, Jongtae Her
  • Patent number: 11002278
    Abstract: A pump mechanism for a horizontal compressor comprises: a partition plate disposed in a housing of the horizontal compressor to separate an oil compartment from a motor compartment provided with a motor; and a pump assembly including a first pump and a second pump located in the oil compartment. The first pump sucks oil from the motor compartment to the oil compartment. The second pump delivers the oil from the oil compartment to a lubrication channel inside a rotary shaft. The partition plate is made from a flat plate, and includes: a plate main body extending in a vertical direction; and a flange portion extending from the peripheral edge of the plate main body in an axial direction and secured to the housing. A horizontal compressor including the pump mechanism is also provided.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 11, 2021
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Yonghua Cui, Xiaogeng Su
  • Patent number: 10975868
    Abstract: A compressor may include first and second scrolls and a seal. The first scroll includes a first end plate and a first spiral wrap extending from the first end plate. The first end plate may define a discharge passage and an annular recess surrounding the discharge passage. The second scroll includes a second end plate and a second spiral wrap extending from the second end plate. The first and second spiral wraps cooperate to define a plurality of fluid pockets. The seal may be at least partially received in the annular recess and may cooperate with the first scroll to define a biasing chamber receiving fluid at an intermediate pressure. The seal may include inner and outer diametrical surfaces. The inner diametrical surface may include a plurality of first annular grooves. The outer diametrical surface may include a plurality of second annular grooves.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: April 13, 2021
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Pavan Pralhad Jorwekar, Bharat Mahavir Shirote, Vikas Ramkumar Verma, Yogesh Sudhirarao Mahure, Patrick R. Gillespie
  • Patent number: 10941769
    Abstract: An object is to optimize a back pressure pressing an orbiting scroll against a fixed scroll in a scroll compressor to which an injection cycle is applied. A back pressure control valve (400) adjusting back pressure (Pm) in a back pressure chamber (H4), adjusts the opening degree of a first valve body (424) increasing and decreasing the flow rate of lubricant which has been separated from gaseous refrigerant compressed in a compression chamber and is supplied to the back pressure chamber (H4), in accordance with suction pressure (Ps) in a suction chamber (H1), discharge pressure (Pd) in a discharge chamber (H2), and injection pressure (Pinj). Then, the back pressure control valve (400) increases and decreases the lubricant flow rate in accordance with injection pressure (Pinj) as well as suction pressure (Ps) and discharge pressure (Pd), to adjust back pressure to target back pressure varying in accordance with injection pressure (Pinj).
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 9, 2021
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Atsuo Teshima, Yoshio Kowada, Hiroshi Honda, Yoshinobu Maemura, Misako Kaburagi
  • Patent number: 10851789
    Abstract: A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 1, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Cheol Hwan Kim, Howon Lee
  • Patent number: 10851787
    Abstract: A bearing housing drain in a scroll compressor and method for controlling lubrication of a thrust bearing in the scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scroll member; an orbiting scroll hub having an upper end and a lower end, the lower end being disposed at a vertical elevation that is lower than the upper end; a thrust bearing; a lubricant sump; a housing drain cavity disposed within the compressor housing and configured to receive lubricant from the lubricant sump and to deliver the lubricant to the thrust bearing; and a bearing housing drain fluidly connected to the housing drain cavity and the lubricant sump.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: December 1, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Eric S. Mlsna, Scott J. Smerud, Daniel R. Crum, Scott M. Branch
  • Patent number: 10815995
    Abstract: The present invention relates to a cluster assembly and an electric compressor comprising the same and, more particularly, to a cluster assembly which has an improved insulation structure and is convenient to install, and an electric compressor comprising the same.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 27, 2020
    Assignee: Hanon Systems
    Inventors: Jeong Gil Heo, Shinji Tagami, Bong Kyun Seo
  • Patent number: 10753352
    Abstract: A compressor may include a shell, a non-orbiting scroll, an orbiting scroll, and a discharge valve member. The shell may define a discharge chamber. The non-orbiting scroll may be disposed within the discharge chamber and includes a first end plate and a first spiral wrap extending from the first end plate. The orbiting scroll may be disposed within the discharge chamber and includes a second end plate and a second spiral wrap extending from the second end plate. The first and second spiral wraps mesh with each other to define fluid pockets therebetween. The second end plate includes a discharge passage extending therethrough. The discharge valve member may be attached to the second end plate and may be movable between an open position allowing fluid flow from the discharge passage to the discharge chamber and a closed position restricting fluid flow from the discharge passage to the discharge chamber.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 25, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov, Kevin J. Gehret
  • Patent number: 10718329
    Abstract: A scroll compressor is provided which includes: a revolving scroll, a fixed scroll, an autorotation preventing mechanism, a frame, a crank shaft provided with an eccentric pin portion which is eccentric with respect to an axis, the crank shaft being provided with a flange portion at a lower portion of the eccentric pin portion, the flange portion being larger than the diameter of the eccentric pin portion, a balance weight mounted on the flange portion, a sealing member performing sealing between the revolving scroll and the flange portion, and a thrust bearing arranged between the frame and the flange portion. The scroll compressor reduces the amount of oil flowing into a back pressure chamber, thereby improving the performance of the scroll compressor.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 21, 2020
    Assignee: HITACHI-JOHNSON CONTROLS AIR CONDITIONG, INC.
    Inventors: Yasunori Nakano, Satoshi Nakamura, Takamasa Adachi, Masatsugu Chikano, Yuuichi Yanagase
  • Patent number: 10641269
    Abstract: A scroll compressor is provided, including: a compression mechanism, a driving mechanism, a suction fitting and a lubrication system. The compression mechanism is adapted to compress working fluid and includes a movable scroll component, a fixed scroll component and a suction window, the working fluid flows into the compression mechanism via the suction window. The driving mechanism includes a driving shaft and is adapted to drive the compression mechanism. The working fluid flows into the scroll compressor via the suction fitting and then flow into the compression mechanism. The lubrication system includes a lubricant source and a compression mechanism oil supply device adapted to supply the lubricant to the compression mechanism from the lubricant source. The compression mechanism oil supply device has an oil supply passage and an outflow opening of the oil supply passage is located between an opening of the suction fitting and the suction window.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: May 5, 2020
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Wenrui Ma, Yinglin Yu, Peilong Dong, Sheng Liang, Yonghua Cui
  • Patent number: 10605244
    Abstract: This scroll compressor includes a scroll compression unit including a first fixed scroll including a first fixed base plate and a first fixed spiral wrap, an orbiting scroll arrangement (7) including a first orbiting spiral wrap (14), the first fixed spiral wrap and the first orbiting spiral wrap (14) forming a plurality of first compression chambers. The scroll compressor further includes a refrigerant suction part suitable for supplying the scroll compression unit with refrigerant to be compressed. The orbiting scroll arrangement (7) further includes a first orbiting guiding portion (21) extending from an outer end portion of the first orbiting spiral wrap (14) and configured to guide, in use, at least a part of the refrigerant supplied to the scroll compression unit towards the first compression chambers.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: March 31, 2020
    Assignee: Danfoss Commercial Compressors S.A.
    Inventors: Nicolas Nouyrigat, Patrice Bonnefoi, Yves Rosson, Ingrid Claudin, Arnaud Daussin
  • Patent number: 10584744
    Abstract: A refrigerant compressor includes a compression mechanism portion, a drive portion, a crankshaft, a main bearing and an auxiliary bearing that support the crankshaft, and a sealed container that accommodates therein the compression mechanism portion, the drive portion, the crankshaft, the main bearing, and the auxiliary bearing. The auxiliary bearing is configured of an antifriction bearing and provided in an auxiliary bearing housing attached to the sealed container. The auxiliary bearing housing includes an opening for inserting the auxiliary bearing on the drive portion side, and includes a housing cover covering the opening. An insulating sleeve configured of an insulating material is provided between the crankshaft and the auxiliary bearing. The insulating sleeve includes a cylinder portion located between the crankshaft and the auxiliary bearing, and a flange portion located between the auxiliary bearing and the housing cover and extended in an outer diameter direction.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: March 10, 2020
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Yuko Kozuma, Yasuaki Iizuka, Mutsunori Matsunaga, Masaru Ohtahara
  • Patent number: 10502209
    Abstract: A scroll compressor includes a fixed scroll and a movable scroll. The fixed scroll has a spiral fixed-side wrap positioned upright on a surface of a fixed-side plate. The movable scroll is orbitably disposed to face the fixed scroll. The movable scroll has a spiral movable-side wrap positioned upright on a surface of a movable-side plate, with the movable-side wrap being configured to mesh with the fixed-side wrap. A side clearance is formed between a side surface of the fixed-side wrap and a side surface of the movable-side wrap so as to increase from an outer peripheral side toward an inner peripheral side of each of the wraps.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: December 10, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Ryouta Nakai, Yasuhiro Murakami, Yasuo Mizushima, Masahiro Noro
  • Patent number: 10393116
    Abstract: A compressor has a compressor body and a motor integrated with one another, with the structure in which the sub-assembly of the motor portion and the compressor body assembled by positioning centers of the motor and compressor casings with positioning pins. When the deformation of a flange surface of the motor casing is large on a side of the compressor casing, positioning pin holes may have positional dimensions where the positioning is difficult, and the rigidity of the motor casing is increased to avoid change to the dimensional positions of the pin holes of the motor casing after the sub-assembly process. Fastening seats to fasten a motor stator by use of fastening members and ribs to reinforce the fastening seats are thus provided inside the motor casing to increase rigidity of the motor casing and inhibit deformation of the positional dimensions of the positional pin holes.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: August 27, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Yoshio Kobayashi
  • Patent number: 10330098
    Abstract: A scroll compressor, includes: a scroll compression mechanism including an orbiting scroll, a fixed scroll, and a thrust plate supporting a load of the orbiting scroll in a thrust direction; a back-pressure application mechanism that applies, as back pressure, the refrigerant gas compressed by the scroll compression mechanism to a rear surface of the thrust plate; and a floating amount restriction mechanism that restricts an amount of floating of the thrust plate caused by the back pressure. The floating amount restriction mechanism includes a restriction pin that includes a shaft part and a head part, and locks the thrust plate to the head part to restrict the amount of floating. The shaft part passes through the thrust plate and has a front end part fixed to a front housing, and the head part has a diameter larger than a diameter of the shaft part.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 25, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Masahiro Ohta, Makoto Takeuchi, Kazuhide Watanabe
  • Patent number: 10323638
    Abstract: A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 18, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 10267311
    Abstract: Provided is a horizontal step scroll compressor with which liquid compression can be effectively prevented even when starting up from a liquid migration state in which liquid refrigerant has migrated into the compressor while operation of the compressor is stopped. In this horizontal step scroll compressor, bypass ports, which divert pressure into a discharge chamber when the pressure in a pair of compression chambers reaches or exceeds a set pressure at an intermediate compression position between a suction cutoff position and the position communicating with a discharge port, are provided along the spiral direction of spiral wraps.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: April 23, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hajime Sato, Toshiyuki Goto, Takahide Ito, Hisao Mizuno
  • Patent number: 10161401
    Abstract: Systems and techniques are disclosed to sense a temperature and a flow rate of oil in a compressor. A compressor includes: a casing; a frame on the casing; a fixed scroll on the frame; an orbiting scroll supported by the frame and defining a compression chamber while engaging the fixed scroll; and a crank shaft. The crank shaft transfers, to the orbiting scroll, a rotational force of a motor. The casing includes: a main housing including a refrigerant discharge passage and an oil passing passage; and a sub-housing including a refrigerant discharge port and an oil channel, which includes an oil reservoir, that each face the main housing. A sensor module attached to a sensor receptor in the sub-housing includes: a sensor housing covering the sensor receptor; and an oil sensor and a temperature sensor located on the sensor housing that each protrude towards the oil reservoir.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 25, 2018
    Assignee: LG Electronics Inc.
    Inventors: Taeshin Kim, Ikseo Park, Namsik Yim
  • Patent number: 10156236
    Abstract: A compressor may include a shell, orbiting and non-orbiting scrolls, an unloader bushing assembly and a drive shaft. The unloader bushing assembly may include a drive bushing and a spring. The drive bushing includes an outer surface engaged with the orbiting scroll and may define an opening extending from a first bushing end to a second bushing end. The spring may include a body disposed within the opening of the drive bushing and may include first and second spring ends with at least a portion of the first spring end extending laterally from the body and overlapping the first bushing end. At least a portion of the second spring end may extend laterally from a body and overlap the second bushing end to secure the spring within the drive bushing. The drive shaft may include a crank pin disposed within the opening of the drive bushing and engaging the spring.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: December 18, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Ajay Utpat, James A. Schaefer
  • Patent number: 10094380
    Abstract: A compressor may include first and second scrolls, a hub plate and a valve. The first scroll may include an end plate defining first and second sides, a primary discharge passage extending therethrough, and a secondary discharge passage extending therethrough and located radially outward from the primary discharge passage. The hub plate may be mounted to the first scroll and may include first and second opposite sides and a hub discharge passage in fluid communication with the primary discharge passage. The first side of the hub plate may face the second side of the end plate and may include a valve guide extending axially toward the end plate adjacent the hub discharge passage. The valve member may be secured on the valve guide for axial movement between open and closed positions to respectively allow and restrict fluid communication between the secondary discharge passage and the hub discharge passage.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 9, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 9920762
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include a first scroll body and a second scroll body. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. Further, the scroll ribs mutually engage such that the second scroll body is movable relative to the first scroll body to compress fluid. A drive shaft has an eccentric drive pin configured to engage a drive hub on the second scroll body. The scroll compress also includes a slider block that fits over the drive pin. The slider block has a first drive surface configured to engage a second drive surface of the drive pin. In particular embodiments, the slider block can tilt about one or more edges of the second drive surface when the drive shaft is deflected under load.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 20, 2018
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: James W. Bush, Ronald J. Duppert
  • Patent number: 9879678
    Abstract: An object is to enable suppression of degradation of reliability by supporting a flange portion of a crankshaft with a bearing while downsizing a scroll compressor by reducing the size of the flange portion of the crankshaft. A scroll compressor includes: a fixed scroll fixed to a frame; an orbiting scroll forming a compression chamber by performing an orbital motion with respect to the fixed scroll; an electric motor that drives the orbiting scroll via the crankshaft; and a bearing part provided on the lower side from the flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft. The scroll compressor furthers has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side. Assuming that the outer diameter of the flange portion 12d is ?Dt and the outer diameter of the thrust stopper is ?Ds, ?Dt<?Ds holds.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: January 30, 2018
    Assignee: Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited
    Inventors: Yoshihiro Fukaya, Takeshi Tsuchiya, Shuji Hasegawa, Koichi Imada, Akihiro Ishikawa
  • Patent number: 9816499
    Abstract: An electric compressor includes a compression unit that compresses a refrigerant, an electric motor that is coupled with the compression unit via a main shaft and a housing that accommodates the compression unit and the electric motor. The electric compressor further includes an end-side bearing holding part that is provided near an axial end of the housing closer to the electric motor and a rolling bearing that has an outer ring press-fitted into the end-side bearing holding part and an inner ring into which an end of the rotating shaft is press-fitted, and that supports the main shaft, in which an opening into which an assembly jig for supporting the rolling bearing when the main shaft is press-fitted into the inner ring can be inserted and removed is provided in an end surface of the housing near the end-side bearing holding part.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: November 14, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.
    Inventors: Masayuki Ishikawa, Takayuki Hagita, Yuki Ichise, Takeshi Hirano, Takayuki Watanabe
  • Patent number: 9777730
    Abstract: A compressor may include a first scroll member, a second scroll member and a drive shaft. The first scroll member may include a first end plate defining a first discharge port and a first spiral wrap extending from the first end plate. The second scroll member may include a second end plate defining a first variable volume ratio port and a second spiral wrap extending from the second end plate and meshingly engaged with the first spiral wrap and forming compression pockets. The variable volume ratio port may be located radially outward relative to the first discharge port and in communication with a first compression pocket. The drive shaft may be engaged with the second scroll member and driving orbital displacement of the second scroll member relative to the first scroll member.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 3, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov, Robert C. Stover
  • Patent number: 9765784
    Abstract: An Oldham coupling structure for a scroll compressor decreases Oldham coupling pressure loading without increasing compressor diameter or significantly increasing orbiting scroll or Oldham coupling inertia. The Oldham coupling key height and area are increased by recessing the key face into the ring portion of the Oldham coupling, increasing the key height and adding pads to the involute side of the orbiting scroll base plate to extend the key slot, potentially resulting in reduced compressor diameter and/or reduced orbiting scroll and Oldham coupling inertia.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: September 19, 2017
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Scott Joseph Smerud, Brennon J. Swaney, Jerry Allen Rood
  • Patent number: 9759216
    Abstract: A scroll compressor includes fixed and movable scrolls, and a drive part. The fixed scroll has a fixed-side end plate, a fixed-side lap, and a thrust sliding portion surrounding the first lap. The movable scroll has a movable-side end plate and a movable-side lap. The drive part revolves the movable scroll so that refrigerant in a compression chamber formed by the fixed-side lap and movable-side lap is compressed. A back-pressure space which communicates with the compression chamber for at least a prescribed period in a revolution cycle is formed at the back face side of the movable scroll. A first oil channel supplied with oil from a space is formed in a first angle region of the fixed-side end plate. A communication channel formed in a second angle region communicates with the compression chamber. A second oil channel communicating with the back-pressure space is formed in the second angle region.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: September 12, 2017
    Assignee: Daikin Industries, Ltd.
    Inventor: Katsumi Kato
  • Patent number: 9695823
    Abstract: A compressor is provided and may include a shell, an orbiting scroll, a driveshaft and an unloader counterweight. The orbiting scroll may be disposed within the shell and include a boss portion. The driveshaft may include an eccentric pin and rotate about a longitudinal axis. The unloader counterweight assembly may include a first, a second end, and a longitudinal opening extending therebetween. The eccentric pin of the driveshaft may be disposed within the longitudinal opening at the first end of the unloader counterweight assembly. The boss portion of the orbiting scroll may be disposed within the longitudinal opening at the second end of the unloader counterweight assembly.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: July 4, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jeff Berning