With Specific Rotation Preventing Or Rotation Coupling Means Patents (Class 418/55.3)
  • Patent number: 11346220
    Abstract: A compressor includes a rotation shaft, a drive unit, and a compression unit. The compression unit includes a fixed scroll, an orbiting scroll, a main frame that is disposed on the fixed scroll, and an Oldham's ring coupled to the orbiting scroll and the main frame and configured to restrict rotation of the orbiting scroll. The Oldham's ring includes a ring body disposed between the orbiting scroll and the main frame, keys that protrude from the ring body that are each coupled to the orbiting scroll or the main frame, and caps that are inserted into the main frame and that each have (i) a coupling hole that receives a key among the keys and (ii) a machined portion that faces the coupling hole and that is spaced apart from at least a portion of an outer surface of the key.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: May 31, 2022
    Assignee: LG Electronics Inc.
    Inventors: Sangbaek Park, Jungsun Choi, Cheolhwan Kim
  • Patent number: 11326600
    Abstract: A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 10, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya Hattori, Takuro Yamashita, Takumi Maeda, Shinji Koike
  • Patent number: 11319955
    Abstract: Some embodiments are directed to a positive displacement pump comprising: a pipe having a first end secured to a transmission area and a second end ending in a cylinder secured to a discharge area, the pipe comprising a suction opening and the discharge area comprising a discharge opening, a drive shaft with one end situated at the cylinder, a piston pressed against the cylinder by elastic means so as to prevent fluid from moving between the pipe and the discharge area, in which the pump further comprises means for moving the piston elastically away from the cylinder and keeping it at a predetermined distance from same. Some other embodiments are directed to a method for cleaning this pump.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: May 3, 2022
    Assignee: MOUVEX
    Inventors: Fabrice Bariau, Yann Besnier
  • Patent number: 11306717
    Abstract: A co-rotating scroll machine operable as compressor or expander, comprises a transmission and guidance mechanism for first and second scroll plates, having three transmission and guidance units uniformly distributed around the scroll plates towards the periphery thereof. Each transmission and guidance unit comprises a male element mounted on one of the scroll plates and a facing female element mounted on the facing scroll plate. Each transmission and guidance unit comprises an internal ring mounted for angular displacement in the opening of the female element, the internal ring having therein a slot wherein the male element of the transmission and guidance unit slides. The male of the three transmission and guidance units are supported and guided by respective support elements on a common external guide ring. A liquid injection system comprises a liquid channel which is connected with bleed holes.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: April 19, 2022
    Inventors: Luis Mendoza, Jürg Schiffmann
  • Patent number: 11187230
    Abstract: A scroll compressor having a casing, a drive motor which is held in place within the casing and has an internal flow passage and an external flow passage to pass through, a rotation shaft which is combined with the drive motor for rotation, a frame that is provided under the drive motor and through which the rotation shaft passes for support, a first scroll which is provided under the frame and on whose one flank surface a first wrap is formed, a second scroll which is provided between the frame and the first scroll, on which a second wrap that is engaged with the first wrap is formed, with which the rotation shaft is eccentrically combined and which forms a compression chamber, and a flow passage separation unit which separates a space between the drive motor and the frame into an internal space and an external space is provided.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: November 30, 2021
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Taekyoung Kim, Byeongchul Lee, Cheolhwan Kim
  • Patent number: 11136977
    Abstract: A compressor may include a non-orbiting scroll, an orbiting scroll, a bearing housing and first and second discrete keys. The non-orbiting scroll may include a first end plate having a first spiral wrap extending therefrom. The orbiting scroll may include a second end plate having a second spiral wrap extending therefrom and meshingly engaged with the first spiral wrap of the non-orbiting scroll. The bearing housing may support the orbiting scroll. Each of the first and second keys may be slidably engaged in first slots formed in the second end plate of the orbiting scroll and slidably engaged in second slots formed in the first end plate of the non-orbiting scroll or third slots formed in the bearing housing.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: October 5, 2021
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Vinayak N. Nagulpelli, Brian J. Knapke, Daniel J. Knoth
  • Patent number: 11125232
    Abstract: Provided is an efficient scroll compressor capable of suppressing deformation of a fixed scroll during operation. The scroll compressor includes: a fixed scroll (30) including a fixed-side end plate (32) and a spiral fixed-side wrap (34) protruding from a front surface (32a) of the fixed-side end plate; a movable scroll (40) including a spiral movable-side wrap (44) combined with the fixed-side wrap to form a compression chamber (Sc); and a cover member (60) disposed in a high-pressure space on a rear surface (32b) side of the fixed-side end plate and attached to the fixed scroll. The fixed-side end plate includes a compression chamber adjacent portion (33) at which the front surface of the fixed-side end plate faces the compression chamber. The compression chamber adjacent portion includes a high-pressure adjacent portion (33a) disposed at a central portion of the compression chamber adjacent portion, and an intermediate- and low-pressure adjacent portion (33b).
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: September 21, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuhiro Murakami, Yasuo Mizushima, Ryouta Nakai
  • Patent number: 11111919
    Abstract: A scroll compressor includes a fixed scroll fixed inside a housing, an orbiting scroll configured to orbit engaged with the fixed scroll, a rotary shaft configured to allow the orbiting scroll to orbit by supporting the orbiting scroll with an eccentric shaft eccentric from a main shaft, and a slide bush portion installed between a bearing of the orbiting scroll and the eccentric shaft and according to a rotational speed of the rotary shaft, configured to change a pressing force of the orbiting scroll applied to the fixed scroll by allowing an eccentricity to be changed by a gas load applied to the orbiting scroll.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: September 7, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Takashi Uekawa
  • Patent number: 11067079
    Abstract: A scroll compressor is provided that may include a frame; a non-orbiting scroll provided with a non-orbiting wrap formed on a first side surface of a non-orbiting end plate in an axial direction; an orbiting scroll provided with an orbiting wrap formed on a first side surface of the orbiting end plate in the axial direction and engaged with the non-orbiting wrap to form a compression chamber; a plurality of first guides disposed between the frame and the non-orbiting scroll to be located radially outward from the non-orbiting wrap; and a plurality of second guides provided on the orbiting end plate to be located radially outward from the orbiting wrap, respectively, so as to allow an orbiting motion of the orbiting scroll together with the first guides.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: July 20, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Changeol Jo, Suchul Kim, Donghyun Sohn
  • Patent number: 11015599
    Abstract: A co-rotating scroll compressor includes a driving-side scroll member (7), a driven-side scroll member (9), a pin ring mechanism (15), a driving-side bearing (11) that rotatably supports the driving-side scroll member (7), and a driven-side bearing (13) that rotatably supports the driven-side scroll member (9). A center of gravity of at least one of the driving shaft (6), the driving-side scroll member (7), and the driven-side scroll member (9) is shifted from rotation centers (CL1, CL2) by a predetermined distance. The predetermined distance is set so that a total bearing load obtained by centrifugal force and fluid compression that is 5% of a dynamic load rating of the driving-side bearing (11) and the driven-side bearing (13) or more is generated.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: May 25, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takuma Yamashita, Takahide Ito, Makoto Takeuchi, Keita Kitaguchi, Hirofumi Hirata
  • Patent number: 10995755
    Abstract: The present invention provides a co-rotating scroll compressor that can inhibit leakage of lubricant supplied to a synchronous drive mechanism. A co-rotating scroll compressor includes a drive-side plate 20 placed between a driving scroll member 70 and a motor 5 at a predetermined distance from the driving scroll member 70 in a direction of a drive-side rotation axis CL1. The drive-side plate 20 includes a shaft portion 20b fixed to a driving shaft 6 of the motor 5 and a fixing portion 20a fixed to an outer periphery of the driving scroll member 70, and a synchronous drive mechanism made up of a needle bearing 32a and a pin 32b is placed between the drive-side plate 20 and driving scroll member 70.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 4, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takuma Yamashita, Takahide Ito, Keita Kitaguchi, Makoto Takeuchi, Hirohumi Hirata
  • Patent number: 10941661
    Abstract: A scroll compressor includes a movable scroll having first key grooves, a stationary member having second key grooves, and an Oldham coupling provided between the movable scroll and stationary member. The Oldham coupling is movable with respect to the stationary member along a first axis, and with respect to the movable scroll along a second axis. The Oldham coupling has an annular body portion, at least two first key portions fitted into the first grooves, and a pair of second key portions fitted into the second grooves. The first horizontal surface has inwardly positioned surfaces positioned more on a center of gravity side of the Oldham coupling than virtual extension lines of first inner peripheral edges that are part of an inner peripheral edge of the annular body portion. The first key portions have inwardly positioned portions that project from the inwardly positioned surfaces.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 9, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshinobu Yosuke, Takayuki Kawamoto
  • Patent number: 10895260
    Abstract: A scroll compressor includes a casing, and an internal sealed space in the casing; a drive motor configured with a stator and a rotor which rotates within the stator, and that has an internal flow passage and an external flow passage; a rotation shaft connected to the rotor; a compression unit that includes a first scroll, and a second scroll which is engaged with the first scroll to form a compression chamber, with which the rotation shaft is eccentrically combined; a discharge pipe that communicates with an upper space of the internal space; an oil separation member disposed in the upper space; and a guidance member that is provided between an upper end of the drive motor and a lower end of the discharge pipe and guides the refrigerant with which the oil is mixed, to the oil separation member.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: January 19, 2021
    Assignee: LG Electronics Inc.
    Inventors: Cheolhwan Kim, Kangwook Lee, Taekyoung Kim, Byeongchul Lee
  • Patent number: 10890185
    Abstract: The scroll compressor comprises a fixed scroll element comprising a fixed end plate (13) and a fixed spiral wrap (14); an orbiting scroll element comprising an orbiting end plate and an orbiting spiral wrap (16), the fixed and orbiting spiral wraps (14, 16) being intermeshed with each other to define pairs of compression pockets, a radial inner pair of compression pockets comprising a direct pocket (17.1) and an indirect pocket (17.2); a central main discharge port (18) formed in the fixed end plate (13) and configured to communicate the direct pocket (17.1) with a discharge pressure volume; and an auxiliary discharge port (26) formed in the fixed end plate (13) at a position close to an outer wall side (14.2) of the fixed spiral wrap (14) and adjacent the inner end (14.4) of the fixed spiral wrap (14). The auxiliary discharge port (26), during orbiting movement of the orbiting scroll element (12), is at least partially uncovered by the orbiting spiral wrap (16) to communicate the indirect pocket (17.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: January 12, 2021
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Sebastien Denis, David Genevois, Julien Lavy
  • Patent number: 10865793
    Abstract: A scroll device is disclosed having a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, an inlet formed in the housing and/or the fixed scroll for receiving a cooling liquid, and a channel formed in the idler shaft for receiving the cooling liquid.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 15, 2020
    Assignee: Air Squared, Inc.
    Inventors: Bryce R Shaffer, Justin Mattice, John Wilson
  • Patent number: 10815992
    Abstract: A scroll compressor includes a movable scroll having first key grooves, a stationary member having second key grooves, and an Oldham coupling provided between the movable scroll and the stationary member. The Oldham coupling is movable with respect to the stationary member along a first axis direction, and with respect to the movable scroll along a second axis direction. The second axis is orthogonal to the first axis and passes through a center of gravity of the Oldham coupling. The Oldham coupling has an annular body portion, at least two first key portions fitted into the first key grooves, and second key portions fitted into the second key grooves. Key gaps are formed between outer peripheral surfaces of the first key portions and inner peripheral surfaces of the first key grooves. The key gaps have first gaps and second gaps wider than the first gaps.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: October 27, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshinobu Yosuke, Takayuki Kawamoto
  • Patent number: 10711783
    Abstract: A compression device includes at least: two interleaved scrolls each of which is made of an aluminum alloy, one of the scrolls, being a fixed scroll (3), and is fixed and the other scroll, which is an orbiting scroll and moves eccentrically without rotating. Also included are anti-rotation means made of an aluminum alloy and configured to allow anti-rotation of the orbiting scroll. The compression device also includes one flat thrust bearing configured to axially contain the orbiting scroll and is made of aluminum alloys or grades of cast iron. The compression device also includes coatings for promoting friction between the fixed scroll, the orbiting scroll, the anti-rotation means and the flat thrust bearing.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: July 14, 2020
    Assignee: LIEBHERR-AEROSPACE TOULOUSE SAS
    Inventor: Eric Monet
  • Patent number: 10564095
    Abstract: A sample cell apparatus for use in spectroscopic determination of an analyte in a body fluid sample includes a first plate member and a second plate member made from an optically clear material. A channel extending into a surface of the first plate member and an opposing surface of the second plate member houses a floating seal, which surrounds a fluid sample chamber. The fluid chamber is closed to define a repeatable optical path-length therethrough by urging the first plate member against the second plate member without compressing the floating seal between the first plate member and the second plate member. The seal channel is vented to prevent fluid pressure from flexing the first plate member or the second plate member. An actuator having an extended foot portion extends over the fluid chamber to help prevent flexing of the first plate member or the second plate member.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 18, 2020
    Assignee: Instrumentation Laboratory Company
    Inventors: Brian Joseph Bosy, Josef Kerimo
  • Patent number: 10436201
    Abstract: A scroll compressor includes a scroll compression unit having a fixed scroll and an orbiting scroll a drive shaft configured to drive the orbiting scroll in an orbital movement, and a support frame including a bearing configured to guide in rotation a guided portion of the drive shaft. The scroll compressor also includes an anti-rotation device including a pair of first engaging elements slidably engaged with a pair of complementary engaging elements on the support frame; and a lubrication system to lubricate at least partially the first engaging elements. The lubrication system includes a lubrication channel and hole on the drive shaft; the hole is fluidly connected to the channel and emerges in an outer wall of the guided portion. The system further includes an oil lubrication passage on the support frame, which includes an oil inlet aperture emerging in a receiving chamber, and an oil outlet aperture configured to supply with oil at least one of the first engaging elements.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: October 8, 2019
    Assignee: DANFOSS LLC
    Inventors: Parimal Nilangekar, Tapesh Patel, Swapnil Khaire, Ye Hang
  • Patent number: 10436202
    Abstract: A scroll compressor, includes: a pressure container; a frame including a hollow cylindrical portion and a bottom surface portion formed integrally with each other, the hollow cylindrical portion having an outer peripheral surface fixed to an inner peripheral surface of the pressure container; an orbiting scroll including a first base plate and a first spiral tooth formed on one surface of the first base plate, the orbiting scroll being rotatable in a hollow portion of the hollow cylindrical portion; a fixed scroll including a second base plate with a second spiral tooth, the second spiral tooth being meshed with the first spiral tooth; and a second suction pipe communicating with the hollow portion of the hollow cylindrical portion.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: October 8, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toshihiro Yamashita
  • Patent number: 10415389
    Abstract: The purpose of the present invention is to provide a scroll fluid machine, the reliability of which is ensured and which can be manufactured with high productivity. The present invention provides a scroll fluid machine comprising: a stationary scroll having a spiral wrap upstanding therefrom; an orbiting scroll provided facing the stationary scroll and orbiting; a casing provided outside the orbiting scroll; a drive shaft for causing the orbiting scroll to orbit; an orbiting bearing for transmitting the rotational movement of the drive shaft to the orbiting scroll; and a plurality of rotation prevention mechanisms for preventing the orbiting scroll from rotating. The scroll fluid machine is characterized in that: the rotation prevention mechanisms have crankshafts and also have crank bearings for supporting the crankshafts; and the gap between each of the crankshafts and the corresponding one of the crank bearings is set to be greater than the gap between the drive shaft and the orbiting bearing.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Fuminori Kato
  • Patent number: 10385854
    Abstract: A helical compressor consisting of a casing with at least one fixed spiral; a rotor that has been placed in the casing and has at least one spiral that can be rotated within the casing; a crankshaft that has a main spindle that is mounted on bearings within the casing and an auxiliary spindle that is eccentrically positioned with respect to the geometric axis of the main spindle. The rotor is attached to the auxiliary spindle using a bearing and there is a mechanism present to prevent the rotor from rotating by itself. The rotor has an oil chamber that is connected to the bearing of the auxiliary spindle and a de-gassing channel for the oil chamber that goes through the auxiliary spindle and through part of the main spindle.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 20, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Koen Stoop
  • Patent number: 10247189
    Abstract: A scroll compressor is provided. The scroll compressor may include a fixed scroll having a fixed wrap and a plurality of first key recesses, an orbiting scroll engaged with the fixed scroll to define a compression chambers and having an orbiting wrap and a plurality of second key recesses, the orbiting scroll performing an orbiting motion with respect to the fixed scroll, a drive having a rotation shaft coupled to the orbiting scroll such that one end portion thereof overlaps the orbiting wrap in a lateral direction, and an Oldham ring having a plurality of first and second keys coupled to the plurality of first key recesses and the plurality of second key recesses, respectively. The plurality of second keys may at least temporarily protrude from the plurality of second key recesses in a radial direction during the orbiting motion. Further, the plurality of second key recesses and the plurality of second keys may be disposed to obtain maximum contact areas therebetween at a moment of start of discharging.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: April 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Taemin Earmme, Byeongchul Lee, Cheolhwan Kim, Sanghun Seong
  • Patent number: 10221852
    Abstract: A multi-stage vacuum pump, expander, or compressor, that incorporates one or more stages of a fixed scroll(s) and orbiting scroll(s) that operates simultaneously. The motor drives the orbiting scroll(s) within the structure, and the various fixed and orbiting scrolls are arranged for either parallel generation of a vacuum or high pressure gas, or arranged in series for generating of a significantly high vacuum or gaseous pressure, or a combination of parallel arranged and series arranged fixed and orbiting scrolls may be embodied within the structure, operated by a single motor means, in order to attain the high efficiencies of operation as a vacuum pump, or a gaseous compressor, during its functioning. The various combinations of orbiting and fixed scrolls, when arranged as aforesaid, can be reduced in size, or miniaturized, and used in conjunction with small appliances, or even in hand-held instruments, as for example, for use in conducting mass spectrometry, or for other purposes.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: March 5, 2019
    Assignee: Air Squared, Inc.
    Inventors: Robert W. Shaffer, Bryce R. Shaffer
  • Patent number: 10208749
    Abstract: The present invention relates a scroll compressor. According to an exemplary embodiment of the present invention, the scroll compressor includes: an orbiting scroll configured to be seated on one surface of a main frame and provided with a plurality of seating grooves along a circumferential direction; a stepped part configured to be formed in the seating groove; a ring member configured to be inserted into the seating groove and have a lower surface adhering to the stepped part; and a guide pin configured to have one end fixed to the main frame and the other end extended in an inside length of the ring member, in which the guide pin has the end maintained in a spaced state from the stepped part.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: February 19, 2019
    Assignee: HANON SYSTEMS
    Inventors: Jae Hoon Lim, Kweon Soo Lim, Soo Cheol Jeong, Hong Min Kim
  • Patent number: 9869181
    Abstract: A scroll expander includes a driving scroll body having a first axis line a driven scroll body having a second axis line shifted with respect to the first axis line, a bearing plate including two plates coupled to the driven scroll body and having the second axis line a cylindrical driving pin attached to the driving scroll body, and a cylindrical guide ring attached to the bearing plate and having an inner diameter larger than an outer diameter of the driving pin. The driving pin includes an outer circumferential surface in contact with an inner circumferential surface of the guide ring. A hard film including diamond-like carbon is formed on the outer circumferential surface of the driving pin. The inner circumferential surface of the guide ring includes a polymer resin material with self-lubricity.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 16, 2018
    Assignee: ANEST IWATA CORPORATION
    Inventors: Tamotsu Fujioka, Atsushi Unami, Hiroshi Ito, Takaaki Izumi
  • Patent number: 9803641
    Abstract: In a method for manufacturing an anti-rotation ring of a scroll type compressor, wherein the anti-rotation ring is provided in an anti-rotation mechanism for preventing a movable scroll from rotation on its own axis and made of a metal, the steps of the method include drawing a steel plate into a first intermediate body having a bottomed cylindrical shape, punching the bottom of the first intermediate body thereby to make a second intermediate body and ring forming the second intermediate body.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: October 31, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Ken Suitou, Hiroyuki Gennami
  • Patent number: 9719510
    Abstract: A scroll expander includes: a driving scroll body having a first axis line as a rotary shaft line; a driven scroll body having, as a rotary shaft, a second axis line shifted with respect to the first axis line; a bearing plate having the second axis line as a rotary shaft; a cylindrical driving pin attached to the driving scroll body; and a cylindrical guide ring attached to the bearing plate and having an inner diameter larger than an outer diameter of the driving pin. Four driving pins are disposed on the circumference of a circle around the first axis line at an equal interval. Four guide rings are disposed on the circumference of a circle around the second axis line at the equal interval so as to correspond to the four driving pins.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: August 1, 2017
    Assignee: ANEST IWATA Corporation
    Inventors: Tamotsu Fujioka, Atsushi Unami, Hiroshi Ito, Takaaki Izumi
  • Patent number: 9689388
    Abstract: A compressor according to the present disclosure may include a container; a drive motor provided in the container; a crankshaft coupled to a rotor of the drive motor; a first scroll coupled to the crankshaft to receive a rotational force of the drive motor to perform an orbiting movement; a second scroll coupled to the first scroll to form a first compression unit and a second compression unit along with the first scroll; and a vane provided in the first scroll or second scroll to be brought into contact with the other side scroll to form the second compression unit, wherein the first compression unit is carried out in a scroll compression mode and the second compression unit is carried out in a rotary compression mode.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: June 27, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Yoonsung Choi, Byungkil Yoo, Seheon Choi, Jinho Kim, Chuljig Bae, Byeongchul Lee
  • Patent number: 9638036
    Abstract: A compression mechanism can include a first scroll member, a second scroll member, and an Oldham coupling. The first scroll member can include a base plate. The second scroll member can meshingly engaged with the first scroll member, and include a first radially extending slot. The Oldham coupling can include a ring portion disposed about the base plate and a first radially extending key portion disposed in the first radially extending slot. The ring portion and the key portion can include a pair of upper surfaces and a pair of lower surfaces. At least one pair of upper surfaces or lower surfaces can be substantially coplanar.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: May 2, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: James F. Fogt, Sunil S. Kulkarni
  • Patent number: 9568002
    Abstract: A scroll compressor includes a fixed scroll compressor body and a moveable scroll compressor body that are arranged for relative orbital movement relative to one another to facilitate compression of refrigerant. The scroll compressor includes a key coupling acting upon the moveable scroll compressor body. The key coupling includes a ring body with a plurality of keys, with key contact surfaces, each of the keys projecting axially from the ring body. The key coupling includes four keys in separate quadrants defined by perpendicular lateral axes. The key coupling guides orbital movement of the moveable scroll compressor body along a linear translational path along a lateral axis.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: February 14, 2017
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Ronald J. Duppert, James W. Bush
  • Patent number: 9534599
    Abstract: This scroll compressor includes first and second fixed scroll members, first and second orbiting scroll members, a first Oldham coupling provided between the first orbiting scroll member and the first fixed scroll member and configured to prevent rotation of the first orbiting scroll member with respect to the first fixed scroll member, and a second Oldham coupling provided between the second orbiting scroll member and the second fixed scroll member and configured to prevent rotation of the second orbiting scroll member with respect to the second fixed scroll member. The first Oldham coupling is slidably mounted with respect to the first fixed scroll member along a first displacement direction, and the second Oldham coupling is slidably mounted with respect to the second fixed scroll member along a second displacement direction parallel with respect to first displacement direction. First and second orbiting scroll members are configured to operate in phase opposition.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: January 3, 2017
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Yves Rosson, Patrice Bonnefoi, Ingrid Claudin
  • Patent number: 9453509
    Abstract: A scroll compressor which can be mounted in an automobile has a slide bearing resulting from baking onto a back metal a sliding layer of 5-60 wt % graphite having an average diameter of 5-50 ?m and a graphitization degree of at least 0.6, the remainder containing a polyimide resin and/or a polyamide-imide resin. The form of the graphite has: (a) an average shape factor (YAVE) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5; or (b) graphite particles having a particle ratio of at least 0.5 being at least 50% of the total by number.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 27, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Naoki Horibe, Masaharu Hatta, Satoshi Nomura, Akira Sawamoto, Takao Masamura, Masanori Akizuki, Youichirou Tsuboi, Maki Aoki, Akio Hiraoka
  • Patent number: 9404491
    Abstract: A scroll pump has a metallic bellows that angularly synchronizes the stationary and orbiting scroll blades of the pump, and a hack-up system for the bellows. The back-up system consists of pins integral with and fixed relative to one of the stationary and orbital parts of the scroll pump, and a guide part that is integral with and fixed relative to the other of the stationary and orbital parts. The back-up system may be a non-contacting hack-up system in which there is no contact between the pins and guide part during normal operation of the pump. Therefore, no particles are created by a wearing away of such parts which would otherwise have the potential to contaminate the fluid being worked by the pump and reduce the useful life of the pump.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 2, 2016
    Assignee: Agilent Technologies, Inc.
    Inventor: Ronald J. Forni
  • Patent number: 9366254
    Abstract: A scroll-type compressor for a vehicle, comprising a housing, a fixed scroll and a movable scroll provided in the housing, and a drive mechanism that is provided in the housing and that drives the movable scroll in a manner that disables rotating and enables orbit, by rotation of a drive shaft supported at a front end and a rear end by a front bearing device and a rear bearing device, is provided. The housing includes a first housing, a second housing and a third housing. The compressor includes a vibration isolator that is provided between the movable scroll and the first housing, wherein the vibration isolator is made of a vibration absorbing material and is capable of absorbing vibrations generated at the movable scroll to thereby prevent transfer of the vibrations from the movable scroll to the mounting member via the first housing.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: June 14, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Kazuo Murakami
  • Patent number: 9353745
    Abstract: A scroll compressor having a scroll supporter and/or movement limiter is provided. The scroll compressor may include a casing, a main frame fixedly installed within the casing, a first scroll rotatably supported by the main frame, a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll, a guide that guides movement of the second scroll in the vertical direction, while preventing the second scroll from being rotated in an axial direction; and a movement limiter disposed on an inner wall of the casing and separated from the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: May 31, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Munyoung Lee, Sihyun Jang, Honggyun Jin
  • Patent number: 9279423
    Abstract: A plurality of notches or holes is formed on a motor housing or compressor casing. This permits assembling of the auxiliary crankshaft to the auxiliary crank bearing even after the motor housing and the compressor casing are fastened together. Hence, the assembly can be performed in sequential steps.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: March 8, 2016
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto
  • Patent number: 9169839
    Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 27, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fumihiko Ishizono, Hideaki Maeyama, Takeshi Fushiki, Taro Kato
  • Patent number: 9097252
    Abstract: A scroll pump includes a pump housing, a drive shaft having a concentric shaft portion and an eccentric shaft portion connected to an orbiting scroll. The shaft is driven by a motor so that rotation of the shaft imparts an orbiting motion to the orbiting scroll relative to a fixed scroll for pumping fluid between a pump inlet and a pump outlet of the compressor. The fixed scroll has an opening through which the shaft extends and is connected to the orbiting scroll on an opposing side of the fixed scroll to the motor. An anti-rotation device is located in the high vacuum region for resisting rotation of the orbiting scroll and allowing said orbiting motion, and a bearing arrangement for supporting rotation of the concentric shaft portion and eccentric shaft portion is located in tile low vacuum region.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: August 4, 2015
    Assignee: Edwards Limited
    Inventors: Nigel Paul Schofield, Michael Chung Kau Liu
  • Patent number: 9057269
    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, where the first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. The scroll ribs are configured to mutually engage, and the second scroll body is movable relative to the first scroll body for compressing fluid. A pilot ring engages a perimeter surface of the first scroll body to limit movement of the first scroll body in the radial direction. Further, the first scroll body has a radially-outward-projecting limit tab which abuts a portion of the pilot ring to limit movement of the first scroll body in one of the axial and rotational directions.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: June 16, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: James W. Bush
  • Patent number: 9039396
    Abstract: A compressor is provided and may include a shell, a motor assembly, a drive shaft, a first compression mechanism, and a second compression mechanism. The motor assembly may be disposed within the shell. The drive shaft may be powered by the motor assembly. The first compression mechanism may be disposed within the shell and may be driven by the motor assembly. The second compression mechanism may be driven by the motor assembly.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: May 26, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Kirill M. Ignatiev
  • Patent number: 9028230
    Abstract: A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three equally spaced idlers. One idler then transmits rotation and torque into the second stage. The second orbiting scroll has involutes upon both surfaces to engage the second fixed scroll inwardly and the first fixed scroll outwardly. The first fixed scroll has fins upon its back that extend into the atmosphere to transfer heat to air cool the pump. This pump also has a fan accelerating heat transfer. The pump operates the scrolls directly from a motor or from a motor and magnetic coupling so that the atmosphere does not infiltrate the pump.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: May 12, 2015
    Assignee: Air Squared, Inc.
    Inventor: Robert W. Shaffer
  • Patent number: 9022758
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: May 5, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Ronald J. Duppert
  • Patent number: 9011120
    Abstract: In a scroll compressor of the present invention, a fixed scroll 11 and an orbiting scroll 12 are meshed with each other such that spiral laps of the fixed scroll 11 and the orbiting scroll 12 inwardly face each other, an Oldham ring 26 is provided between the main bearing member 19 and the orbiting scroll 12, and a key portion of the Oldham ring 26 is inserted into a key groove 19a of the main bearing member 19. Grooves 19b are formed in Oldham ring 26 sliding surfaces on both sides of the key groove 19a. According to this configuration, the Oldham ring 26 and the main bearing member 19 can be restrained from coming into contact with each other in the vicinity of the bearing key groove 19a, and restrained from vibrating, and it is possible to provide an inexpensive scroll compressor of low noise.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: April 21, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tooru Adachi, Nobuaki Ogawa, Minoru Fukumoto, Kiyozumi Kusano
  • Publication number: 20150093275
    Abstract: To fasten an auxiliary crank for prevention of autorotation of an orbiting scroll to a compressor-casing side bearing in a scroll compressor, a tool must access from a motor side to a compressor casing so as to fasten the auxiliary crank to the compressor-casing side bearing. Therefore, fastening between the auxiliary crank and the bearing cannot be made after a motor section and a compressor body are fastened together. This necessitates the steps of: separating the compressor body from the motor section; fastening the auxiliary crank to the compressor casing; and then fastening the compressor body and the motor section together. A compressor-motor integrated scroll compressor cannot be assembled in sequential steps, entailing increased assembly costs and lowered maintenability. A plurality of notches or holes is formed on a motor housing or the compressor casing.
    Type: Application
    Filed: July 24, 2014
    Publication date: April 2, 2015
    Inventors: Shumpei YAMAZAKI, Yoshiyuki KANEMOTO
  • Patent number: 8961160
    Abstract: A scroll pump facilitates the installation of a new tip seal between an axial end of the scroll blade of one of inner stationary and orbiting plate scrolls of the pump and the plate of the other of the inner stationary plate and orbiting plate scrolls. To this end, the orbiting plate scroll has a central portion and an outer peripheral portion extending around and seated on the central portion. The outer peripheral portion of the orbiting plate scroll is keyed to and/or fastened to the central portion such that the outer peripheral portion is not rotatable relative to the central portion and yet is axially removable from the central portion. The tip seal can be readily accessed and replaced by removing the outer peripheral portion of the orbiting scroll plate from the central portion.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: February 24, 2015
    Assignee: Agilent Technologies, Inc.
    Inventor: John Calhoun
  • Publication number: 20150037190
    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: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventors: Scott Joseph Smerud, Brennon J. Swaney, Jerry Allen Rood
  • Publication number: 20150037185
    Abstract: A compressor crankshaft assembly includes a crankshaft and an eccentric drive pin extending from one end of the crankshaft. The shape of the drive pin viewed into the exposed end of the drive pin is defined by the intersection of a first cylinder that is coaxial with the axis of a substantially cylindrical orbital bearing journaled and installed to receive the eccentric drive pin and a second cylinder that is coaxial with the axis of a substantially cylindrical main bearing journaled and installed to rotatably receive the crankshaft, such that the area defined by the intersecting portion is less than the area defined by either cylinder.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventors: Jerry Allen Rood, Michael Gerard Benco, Scott Joseph Smerud, Wayne Gerard Gorski, Keith Adam Novak
  • Patent number: 8939741
    Abstract: A scroll compressor is provided that may include a fixed scroll having a fixed wrap, an orbiting scroll engaged with the fixed wrap to define a compression chamber, a rotation shaft having a shaft portion eccentrically located with respect to the orbiting scroll, a pin portion located at an end of the shaft portion and having a diameter smaller than a diameter of the shaft portion, and a bearing located at an end of the pin portion, and a drive that drives the rotation shaft. The pin portion may be inserted through one of the fixed scroll or the orbiting scroll, and the orbiting scroll may be rotatably coupled to the bearing.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: January 27, 2015
    Assignee: LG Electronics Inc.
    Inventors: Sanghun Seong, Cheolhwan Kim, Sungyong Ahn
  • Publication number: 20150023824
    Abstract: To provide a scroll-type expander having a relatively simple structure, small energy loss, and high durability and reliability. A pump-integrated expander 27 includes an expansion unit 50 configured as a scroll-type expander. In the expansion unit 50, a working fluid passage 51e extending from a suction port 51c open to the outside to an inlet 51d open to an expansion chamber 54 is formed in a base 51a of a fixed scroll 51. A working fluid supplied from the outside is guided to the expansion chamber 54 by the working fluid passage 51e. In order to receive a thrust force acting on an orbiting scroll 53 and to prevent the rotation of the orbiting scroll 53, a ball-coupling anti-rotation mechanism 56 using balls as rolling members is disposed between a stepped face 52c of an expander housing 52 and a base 53a of the orbiting scroll 53.
    Type: Application
    Filed: February 7, 2013
    Publication date: January 22, 2015
    Applicant: SANDEN CORPORATION
    Inventors: Shinji Nakamura, Hirofumi Wada, Yuuta Tanaka