Helical Working Member, E.g., Scroll Patents (Class 418/55.1)
  • 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: 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: 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: 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
  • Patent number: 9523361
    Abstract: A scroll compressor is provided. The scroll compressor may include a case; a fixed scroll installed in the case; a wrap portion configured to form a compression chamber by being engaged with the fixed scroll; a base portion coupled to the wrap portion so as to be movable with the fixed scroll but not rotate in a circumferential direction; a drive motor coupled to a rear surface of the base portion, and configured to eccentrically rotate the base portion and the wrap portion; and a main frame installed in the case, and configured to support the base portion. A back pressure chamber that communicates with the compression chamber may be formed between the wrap portion and the base portion where a pressure of the back pressure chamber corresponds to a discharge pressure or an intermediate pressure between the suction pressure and the discharge pressure.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: December 20, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Inho Won, Yanghee Cho, Kitae Jang
  • Patent number: 9512840
    Abstract: A scroll-type compressor for a CO2 vehicle air conditioning system, having a movable displacement spiral which is rotatably connected to an eccentric bearing and which engages into a counterpart spiral such that, between the windings of the displacement spiral and of the counterpart spiral, there are formed chambers which travel radially inward in order to compress the refrigerant and discharge the refrigerant into a pressure chamber, wherein the displacement spiral is arranged on the suction side and the counterpart spiral is arranged on the high-pressure side. The scroll-type compressor is wherein the eccentric bearing is arranged in the displacement chamber between the displacement spiral and the counterpart spiral and has a bearing bushing which is formed integrally with the displacement spiral and the base of which is in alignment with the face side of the windings of the displacement spiral.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: December 6, 2016
    Assignee: Obrist Engineering GmbH
    Inventors: Frank Obrist, Oliver Obrist, Christian Schmaelzle, Christian Busch
  • Patent number: 9441630
    Abstract: A horizontal type scroll compressor includes a main scroll through which a crankshaft is rotatably inserted, the main scroll having a fixed wrap formed on a front surface thereof, and an orbiting scroll coupled to the crankshaft inserted through the main scroll and having an orbiting wrap. A discharge port is formed toward one side surface in an axial direction of the main scroll facing a driving motor. A guide member is coupled to the one side surface of the main scroll, and has a discharge guide portion accommodating the discharge port.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: September 13, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Myungkyun Kiem, Kijung An, Ikseo Park
  • Patent number: 9429157
    Abstract: A compressor having a lower frame and a method of manufacturing the same are disclosed. The compressor may include a cylindrical shell, a rotational shaft rotatably mounted in the cylindrical shell, a rotor and a stator that rotates the rotational shaft, a compression device driven by the rotational shaft, a lower bearing configured to rotatably support one side of the rotational shaft, a lower frame configured to support the lower bearing, the lower frame being configured to be press-fitted into a lower end portion of the cylindrical shell, and a base configured to seal the lower end portion of the cylindrical shell. The lower frame may include a main body configured to be press-fitted onto an inner circumferential surface of the cylindrical shell and a flange that extends from the main body, the flange being configured to limit a press-fit depth by contacting the lower end portion of the cylindrical shell.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: August 30, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiuk Lee, Suchul Kim, Nara Han
  • Patent number: 9407194
    Abstract: A compressor includes an electric motor and a protector device. The motor drives a compression mechanism and has a rotor and a stator. The stator includes aluminum windings. The protector device is attached to the stator and is configured to disconnect the motor from a power supply when an input voltage of the power supply to the motor is less than a threshold voltage value set at a level between a minimum run voltage and an overheat voltage of the compressor. The overheat voltage corresponds to an overheat temperature of the motor. The threshold voltage value is set at a level that is between the minimum run voltage and the overheat voltage. The protector device includes a tolerance level such that the threshold voltage minus the tolerance level is greater than the overheat voltage and the threshold voltage plus the tolerance level is less than the minimum run voltage.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: August 2, 2016
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Jefferson B Johnson, Jeffrey John Hoying, Anthony P. Motz
  • Patent number: 9353748
    Abstract: The present invention relates to a scroll pump (10) comprising two scrolls (20, 22) which are co-operable for pumping fluid from an inlet (24) to an outlet (26) on relative orbiting motion of the scrolls. Each scroll comprises a scroll base (30, 36) from which a spiral scroll wall (28, 34) extends generally axially towards the base of the opposing scroll. The pump comprises a tip seal arrangement comprising an axial end portion of one or both of the scroll walls which locates a tip seal (508) for resisting the passage of pumped fluid across the or both scroll walls between the or both scroll walls and the scroll base of the opposing scroll. The tip seal arrangement limits axial movement of the tip seal towards the scroll base of the opposing scroll along a first spiral region (507) of the or both scrolls between the inlet and the outlet.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: May 31, 2016
    Assignee: Edwards Limited
    Inventors: Miles Geoffery Hockliffe, Ian David Stones, Alan Ernest Kinnaird Holbrook
  • Patent number: 9316223
    Abstract: Provided is a double rotation type scroll expander, aiming at protecting a bearing that supports drive shaft a drive shaft and the like from the heat of a working medium when a working medium introduction hole is provided in the drive shaft. The working medium introduction hole is drilled into the drive shaft such that the high-temperature, high-pressure working medium is supplied to expansion chambers through the working medium introduction hole. An adiabatic sleeve that forms a part of the working medium introduction hole is attached to the drive shaft in an internal region of roller bearings that support the drive shaft and a driven scroll body rotatably. Heat transfer from the working medium to the roller bearings is suppressed by the adiabatic sleeve, whereby the roller bearings are prevented from deteriorating.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: April 19, 2016
    Assignee: ANEST IWATA CORPORATION
    Inventors: Atsushi Unami, Tamotsu Fujioka
  • Patent number: 9297382
    Abstract: A scroll compressor (10) comprising a scroll pumping mechanism having two co-operating scrolls (14,16) mounted within a pump housing (18) so that on relative orbital movement of the scrolls fluid is pumped from a pump inlet (20) in the pump housing to a pump outlet (22) in the pump housing. The scroll compressor (10) further comprises a filter (24) located within the pump housing (18) along a fluid flow path (26) between the pump inlet (20) and the scroll pumping mechanism (12) for resisting the passage of particulates (28) upstream of the compressor.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: March 29, 2016
    Assignee: Edwards Limited
    Inventor: Ian David Stones
  • Patent number: 9194395
    Abstract: A compressor including: a stationary volute and a moving volute each including a plate provided with a scroll, said scrolls defining variable-volume compression chambers; a delivery line provided in the plate of the stationary volute; a delivery port arranged such as to establish a communication between the delivery line and a delivery chamber; and a non-return device including (i) a valve seat surrounding the delivery port and (ii) a delivery valve which can move between delivery port opening and closing positions. The compressor includes: at least one bypass passage having a first end opening into the delivery line at a point between the central compression chamber and the valve seat and a second end opening into an intermediate compression chamber or into a low-pressure portion of the compressor, and at least one bypass valve which can move between bypass passage closing and opening positions.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 24, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Christophe Ancel
  • Patent number: 9181945
    Abstract: The lap shapes of a fixed scroll and an orbiting scroll are configured in an asymmetric tooth profile. In the bed plate of an orbiting scroll, a fluid effluence channel communicating with an external line side compression room of an orbiting scroll lap and another fluid effluence channel communicating with an internal line side compression room are formed, and the outlet side opening of each fluid effluence channel opens in the lap tooth bottom of the orbiting scroll, and inlet side openings are formed in a face of the bed plate that is in sliding contact with the bed plate face of the fixed scroll. In the face of the bed plate, a communicating section control groove that lets the inlet side openings of the two fluid effluence channels and the back pressure room intermittently communicate with each other.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: November 10, 2015
    Assignee: Hitachi Appliances, Inc.
    Inventors: Hiromu Takeda, Masashi Miyake, Masatsugu Chikano, Masaru Ohtahara, Shoji Matsumura
  • Patent number: 9133844
    Abstract: A method of manufacturing a scroll member for a compression mechanism installed in a scroll compressor includes a casting step and a cutting step. An iron casting is formed in the casting step, which includes a spiraling part. The iron casting obtained in the casting step is cut during the cutting step in order to obtain a final shape of the scroll member. The iron casting may include a fixed part having a central portion with a first axial thickness and an external periphery portion with a second axial thickness larger than the first axial thickness before the cutting step. A dimension of a specified portion of the spiraling part may be larger before the cutting step is performed than after the cutting step is performed, with the specified portion preferably disposed toward an external periphery of the spiraling part.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 15, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuhiro Murakami, Mikio Kajiwara, Mitsuhiko Kishikawa, Hiroyuki Yamaji, Mie Arai
  • Patent number: 9109598
    Abstract: According to a compressor of the present invention, the compressor further comprises an oil separating mechanism 40 which separates oil from the refrigerant gas discharged from the compressing mechanism 10, the oil separating mechanism 40 includes a cylindrical space 41 in which the refrigerant gas orbits, an inflow portion 42 for flowing the refrigerant gas discharged from the compressing mechanism 10 into the cylindrical space 41, a sending-out port 43 for sending out, from the cylindrical space 41 to the one container space 32, the refrigerant gas from which the oil is separated, and an exhaust port 44 for discharging the separated oil from the cylindrical space 41 into the other container space 32. According to this configuration, efficiency of the electric motor 20 is enhanced, volumetric efficiency is enhanced, and low oil circulation is realized.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: August 18, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Atsushi Sakuda, Yoshiyuki Futagami, Hiroyuki Kawano, Yusuke Imai, Takashi Morimoto, Osamu Aiba, Takeshi Hashimoto
  • Patent number: 9103341
    Abstract: The scroll compressor includes stationary and moving volutes each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a delivery conduit including a first end emerging in a central compression chamber and a second end designed to be communicated with a delivery chamber, a delivery valve movable between closing and opening positions for closing and opening at least one delivery opening arranged to communicate the delivery conduit and the delivery chamber, at least one bypass valve associated with a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber. The compressor includes a retaining plate mounted on the scroll plate of the stationary scroll and on which first and second retaining elements are formed, the latter being arranged to limit respectively the amplitude of movement of the delivery valve and of each bypass valve toward the opening position thereof.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: August 11, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Jean-Francois Le Coat, Mickael Bron, Pierre Ginies, Dominique Gross, Franck Meynand
  • Patent number: 9080446
    Abstract: A load transmittal apparatus transfers an axial load to a thrust surface during operation of a scroll compressor.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 14, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Kenneth D. Heusler, Ronald J. Duppert
  • Patent number: 9074598
    Abstract: A scroll type device for operating on a fluid provided thereto that includes, as a unit, a housing with two interleaved scroll plates that are installed within such housing and that are operably movable relative to one another in an eccentric orbit, with such scroll plates including interleaved spiral projections, spiral projections include first and second portions, which portions will operate for expansion and the other of which portion will operate for compression as the unit operates in a given normal direction of movement.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: July 7, 2015
    Assignee: Air Squared Manufacturing, Inc.
    Inventors: Robert W. Shaffer, Bryce R. Shaffer
  • Patent number: 9068570
    Abstract: A motor-driven compressor includes a back pressure region that pushes a movable scroll against a fixed scroll. The back pressure region is located at a side of the movable scroll located proximate to an opposing member. A defining portion, which is arranged on a movable end face, contact an opposing end face to define the back pressure region and a suction pressure region. The opposing member includes a communicating portion. An orbiting motion of the movable scroll moves the defining portion. This intermittently communicates the communicating portion with the back pressure region and the suction pressure region.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 30, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Ken Suitou, Kazuhiro Kuroki, Satoru Egawa