With Biasing Means, E.g., Axial Or Radial Patents (Class 418/55.5)
  • Patent number: 10989196
    Abstract: A compressor includes a first throttle portion that receives a refrigerant at an intermediate pressure from an injection pipe of a refrigerant circuit, an enlarged flow path portion that receives the refrigerant from the first throttle portion, a second throttle portion that receives the refrigerant from the enlarged flow path portion, and a compression element. The compression element includes a compression chamber that receives the refrigerant from the second throttle portion. The first throttle portion has a flow path cross-sectional area that is narrower than both a flow path cross-sectional area of the injection pipe and a flow path cross-sectional area of the enlarged flow path portion. The second throttle portion has a flow path cross-sectional area that is narrower than the flow path cross-sectional area of the enlarged flow path portion.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: April 27, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Takeshi Endou, Yoshitomo Tsuka
  • Patent number: 10954940
    Abstract: A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 23, 2021
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Masao Akei, Roy J. Doepker
  • Patent number: 10947974
    Abstract: A scroll vacuum pump includes an orbiting scroll having a wall extending axially from an orbiting scroll base towards a fixed scroll, the fixed scroll having a fixed scroll wall extending axially from a fixed scroll base towards the orbiting scroll; an axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll; and an axial thrust bearing arrangement including an array of ball bearings for bearing against the orbiting scroll base in an axial direction, each ball bearing describing a circular path over the orbiting scroll base during orbiting motion; at least one thrust surface for bearing against the array of ball bearings; and an adjustment mechanism for adjusting the axial position of said at least one thrust surface and thereby the axial position of the orbiting scroll base.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 16, 2021
    Assignee: Edwards Limited
    Inventor: Nigel Paul Schofield
  • Patent number: 10941773
    Abstract: A scroll compressor according to the present disclosure includes a partition wall that divides a sealed vessel into a high-pressure space and a low-pressure space, a non-orbiting scroll provided in the low-pressure space, an orbiting scroll that forms a compression chamber between the orbiting scroll and the non-orbiting scroll, and a rotational shaft. The scroll compressor further includes a main bearing that supports the orbiting scroll, an elastic body that biases one of the non-orbiting scroll and the orbiting scroll so as to separate the non-orbiting scroll and the orbiting scroll from each other, and a plurality of columnar members that are fixed at one ends of the columnar members and are movable at the other ends of the columnar members, and are disposed in a circumferential direction. The non-orbiting scroll or the orbiting scroll that is biased by the elastic body is movable between the partition wall and the main bearing in an axial direction of the rotational shaft.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 9, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Sadayuki Yamada, Yusuke Imai, Atsushi Sakuda, Takashi Morimoto
  • Patent number: 10815994
    Abstract: A mutual rotating scroll compressor includes: a first frame fixed to a casing; a second frame provided with an interval between the first frame and the second frame, a compression space being provided between the first frame and the second frame; a first scroll rotatably supported by the first frame and coupled to a driving motor to rotate in the compression space; a second scroll engaged with the first scroll to rotate about the second frame, the second scroll and the first scroll forming a compression chamber in the compression space; and a bearing housing including a housing part, including a boss accommodation part to which the second scroll is rotatably coupled, and a hinge lug which extends from the housing part and is movably coupled to the second frame.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 27, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaesang Lee, Jinho Kim, Sanghun Seong
  • Patent number: 10808698
    Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 20, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Cheol Hwan Kim, Kangwook Lee, Jungsun Choi
  • Patent number: 10801498
    Abstract: A compressor is provided and may include a shell, a hub, an insert, and at least one collar. The hub may be disposed within the shell and define an axis of rotation. The hub may include an axially extending aperture. The insert may be disposed within the aperture. The at least one collar may be disposed about the hub.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: October 13, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Pankaj Nimbaji Ahire, Pavankumar Jorwekar, Ramprasad Ramaswamy, Vinayak Madanrao Juge
  • Patent number: 10634141
    Abstract: To be as lightweight and compact, for example for automotive technology, a scroll compressor further includes an axial guide that supports the movable compressor body to prevent movements in the direction parallel to a centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis. A coupling prevents the movable compressor body from rotating freely. The axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that it is slidable transversely to the centre axis. The sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: April 28, 2020
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Dimitri Gossen, Muzaffer Ceylan
  • Patent number: 10598180
    Abstract: A compressor includes a housing, a partition, a first scroll, a second scroll, and a valve assembly disposed within the second scroll. The valve assembly includes a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing. When in the first position, the valve body inhibits fluid communication between a fluid source and one of a series of compression pockets formed by the first and second scroll. When in the second position, the valve body allows fluid communication between the conduit and one or more of the series of compression pockets. The valve body is displaceable between the first and second positions in response to a change in operating temperature of the compressor.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: March 24, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Robert C. Stover
  • Patent number: 10598178
    Abstract: A scroll compressor according to the present invention includes a partition plate that partitions a sealed container into a high-pressure space and a low-pressure space, a fixed scroll adjacent to the partition plate, a orbiting scroll, a rotation restrictor, and a main bearing. The sealed scroll compressor further includes a pillar member having a lower end portion secured in a bearing-side engagement portion provided in the main bearing, and an upper end portion inserted in a scroll-side engagement portion provided in the fixed scroll. The axial distance from the upper end portion of the pillar member to the partition plate is smaller than the length by which the pillar member and the bearing-side engagement portion are coupled together.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: March 24, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Sadayuki Yamada, Yusuke Imai, Atsushi Sakuda, Takashi Morimoto, Akihiro Hayashi
  • Patent number: 10502211
    Abstract: A scroll-type compressor includes a compression-chamber-forming member, a housing, an injection passage part, and a relief mechanism. The compression-chamber-forming member forms a compression chamber and has a movable scroll and a fixed scroll. The housing forms a back pressure chamber. Refrigerant to apply back pressure to the compression-chamber-forming member is accumulated in the back pressure chamber. The injection passage part is linked to the compression chamber. The relief mechanism is configured to establish a communication between the compression chamber and the back pressure chamber communicating when injection pressure of the refrigerant flowing from the injection passage part into the compression chamber is higher than the pressure in the back pressure chamber.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: December 10, 2019
    Assignee: Daikin Industries, Ltd.
    Inventor: Kenji Nagahara
  • Patent number: 10309403
    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: January 26, 2016
    Date of Patent: June 4, 2019
    Assignee: HANON SYSTEMS
    Inventors: In Guk Hwang, Kweon Soo Lim, Soo Cheol Jeong
  • Patent number: 10294938
    Abstract: An elastic body is provided which biases one of a fixed scroll and an orbiting scroll in a direction in which the fixed scroll and the orbiting scroll are spaced away from each other. With this, upon the start-up of a compressor, a gap is formed between the fixed scroll and the orbiting scroll, and thus the startability is improved.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 21, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yusuke Imai, Sadayuki Yamada, Atsushi Sakuda, Akihiro Hayashi, Takashi Morimoto
  • Patent number: 10295233
    Abstract: A closed compressor is provided with a flexible oil fence, of which a fixed portion as one end is fixed onto an upper surface of a cylinder between a shaft and a cylinder head and a free end as the other end extends toward an upper inner surface of a closed container. According to this configuration, a collision sound can be prevented from being generated even when the oil fence collides with the upper inner surface of the closed container and hot oil can be prevented from flowing along a surface of suction muffler.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: May 21, 2019
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventor: Seigo Yanase
  • Patent number: 10215175
    Abstract: A compressor may include a non-orbiting scroll, an orbiting scroll, a drive shaft, a bearing housing and an annular seal. The non-orbiting scroll includes a first spiral wrap. The orbiting scroll includes an end plate having a second spiral wrap ending from a first side of the end plate and an annular hub extending from a second side of the end plate. The first and second spiral wraps cooperate to compress working fluid from a suction pressure to a discharge pressure. The drive shaft includes a crankpin received in the hub and drives the orbiting scroll. The bearing housing rotatably supports the drive shaft and may define a biasing chamber containing working fluid biasing the orbiting scroll toward the non-orbiting scroll in an axial direction. The annular seal may engage a diametrical surface of the hub and engage the bearing housing, thereby defining the biasing chamber.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: February 26, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Jeffrey L. Berning, Robert C. Stover
  • Patent number: 10132317
    Abstract: A scroll compressor includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include first and second scroll bodies. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases. The scroll ribs mutually engage, such that the second scroll body is movable relative to the first scroll body for compressing fluid. An oil return tube delivers oil from an upper region of the housing to an oil sump in a lower region of the housing. The relatively longer portion is positioned substantially vertically within the housing. The relatively longer tubular portion is non-circular and may have at least one stepped portion which corresponds to a step in the interior surface of the housing. In some embodiments, the oil return tube has a short tubular portion attached at one end to a relatively longer tubular portion.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 20, 2018
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Todd M. Lynch
  • Patent number: 10100833
    Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls defining a compression chamber, an introduction mechanism, and an auxiliary introduction mechanism. The introduction mechanism supplies fluid from the compression chamber to a back-pressure chamber supply throughout a first period. The auxiliary introduction mechanism has an auxiliary introduction passage and a check valve. The auxiliary introduction mechanism supplies fluid from the compression chamber to a back-pressure chamber supply throughout a second period. The second period includes a time point prior to the first period.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: October 16, 2018
    Assignee: Daikin Industries, Ltd.
    Inventor: Youhei Nishide
  • Patent number: 10094379
    Abstract: Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: October 9, 2018
    Assignee: HANON SYSTEMS
    Inventors: Jong Bo Won, Il Young Park, Kweon Soo Lim
  • Patent number: 10066625
    Abstract: Disclosed herein is an a compressor including a main body, a fixed scroll fixed on the inside of the main body, an orbiting scroll arranged to orbit relative to the fixed scroll, a compressing chamber formed by the fixed scroll and the orbiting scroll, an oil supply hole arranged to supply oil to a contact portion formed by the fixed scroll and the orbiting scroll, and an oil groove formed on an inner side of the contact portion to be closed to an outer side of the contact portion. The oil groove is extended into the form of an arc by being rotated by about 270 degrees or more along the circumference of the fixed scroll to cover the compressing chamber from the outside of the compressing chamber to supply oil all across the area of the contact portion easier which leads to more reliable operation of the compressor.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 4, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang Hee Cho, Yang Sun Kim, Moo Seong Bae, Sung Hea Cho, Jong Cheun Seo, Tae Hoon Choi
  • Patent number: 10036386
    Abstract: A scroll compressor includes one or more stage of compression disposed within a compressor housing. One or more of the stages includes a stationary scroll member including a base and a generally spiral wrap extending from the base of the stationary scroll member. One or more of the stages further includes an orbiting, scroll member including a substantially circular base and a substantially spiral wrap extending from the base of the orbiting scroll member. A coupling is disposed between the first scroll member base and the second scroll member base and in surrounding relationship to the first and second scroll member spiral wraps. At least one stabilizing pad is disposed between the first scroll member base and the second scroll member base and in axial thrust force relationship with the coupling to at least partially prevent tipping of the second scroll member.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: July 31, 2018
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Scott Joseph Smerud, John Robert Sauls, Michael Gerard Benco, Jerry Allen Rood, Rodney Lakowske
  • Patent number: 9945378
    Abstract: Provided is a scroll compressor capable of ensuring reliability of a release valve device. The scroll compressor is provided with: an orbiting scroll having an orbiting scroll wrap; a fixed roll having a fixed scroll wrap intermeshing with the orbiting scroll wrap; a release hole formed in the fixed scroll; a housing hole communicating with the release hole and having larger diameter than that of the release hole; a valve seat member which is housed in the housing hole and has a valve seat surface; a valve plate contacting with or separating from the valve seat surface by a pressure difference; a spring for pressing the valve plate against the valve seat surface; a stopper which is equipped with the spring and secures the valve seat member; and a retainer for securing the stopper.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: April 17, 2018
    Assignee: Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited
    Inventors: Takeshi Kouno, Tsutomu Nozaki, Yuuichi Yanagase
  • Patent number: 9909586
    Abstract: A scroll compressor includes a housing, and scroll compressor bodies disposed in the housing. The scroll bodies include a first and second scroll bodies. The first and second scroll bodies have respective bases and respective scroll ribs that project from the respective bases, wherein the scroll ribs mutually engage. The second scroll body is movable relative to the first scroll body for compressing fluid. A drive unit rotates a drive shaft to drive the second scroll body in an orbital path. The drive shaft has an eccentric drive configured to engage a corresponding drive hub on the second scroll body. The eccentric drive has a drive surface acting on the corresponding drive hub in a first plane. The drive shaft has a locating feature for a counterweight. The locating feature is aligned in either the first plane or a second plane parallel to the first plane.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 6, 2018
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Ronald J. Duppert
  • Patent number: 9897143
    Abstract: A bush bearing and a scroll compressor including a bush bearing are provided. A boss of an orbiting scroll may be inserted into and coupled to a boss coupling groove of a rotational shaft, and thus, an outer circumferential surface of a bush bearing may wholly contact an inner circumferential surface of the boss coupling groove, thereby decreasing wear of the bush bearing. Further, friction loss in the bush bearing may be reduced, and thus, compression efficiency and reliability may be enhanced, noise may be reduced, and material costs may be reduced. Furthermore, despite that the bush bearing is formed in a ring shape and press-fitted to the boss, as the bush bearing may be formed of a plastic material having an ether ketone bonding in consideration of a thermal expansion rate, an elongation, and a press-fit range, the bush bearing may be effectively prevented from being detached from the boss, thereby enhancing a reliability of a compressor.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: February 20, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Junchul Oh, Sungyong Ahn, Eunji Hwang, Byeongchul Lee, Seheon Choi
  • Patent number: 9890861
    Abstract: A scroll compressor is provided that may include a casing, a discharge cover fixed inside of the casing, a first scroll revolved a rotational shaft, a second scroll provided on the first scroll to define compression chambers, the second scroll having an intermediate pressure discharge hole that communicates with a compression chamber of the compression chambers having an intermediate pressure, a back pressure plate provided on the second scroll and having an intermediate pressure suction hole that communicates with the intermediate pressure discharge hole, a floating plate movably provided at a side of the back pressure plate and defining a back pressure chamber, and a sealing member provided between the back pressure plate and the floating plate, the sealing member including a sealing body, and at least one protrusion provided at an incline with respect to a central line that extends in a horizontal direction of the sealing body.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: February 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Honggyun Jin, Munyoung Lee, Sangwoo Joo
  • Patent number: 9879674
    Abstract: A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: January 30, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Masao Akei, Roy J. Doepker
  • Patent number: 9765782
    Abstract: A scroll compressor of the present invention includes a partition plate 20, a fixed scroll 30, an orbiting scroll 40, a rotation-restraining member 90, a main bearing 60, a bearing-side concave portion 102, a scroll-side concave portion 101 and a columnar member 100. A lower end of the columnar member 100 is inserted into the bearing-side concave portion 102, and an upper end of the columnar member is inserted into the scroll-side concave portion 101. The columnar member 100 slides with at least one of the bearing-side concave portion 102 and the scroll-side concave portion 101, thereby moving the fixed scroll 30 in an axial direction between the partition plate 20 and the main bearing 60. A high pressure is applied to a discharge space 30H, thereby pressing the fixed scroll 30 against the orbiting scroll 40.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: September 19, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yusuke Imai, Takeshi Ogata, Sadayuki Yamada, Hidenobu Shintaku, Atsushi Sakuda, Takashi Morimoto
  • Patent number: 9752578
    Abstract: A scroll compressor and a method for assembling a scroll compressor are provided. The scroll compressor may include a casing including a rotational shaft, a main frame coupled to an inside of the casing, a first scroll that revolves due to rotation of the rotational shaft, the first scroll being supported by the main frame, and a second scroll disposed on or at a side of the first scroll to define a plurality of compression chambers together with the first scroll. The second scroll may include a head plate including a wrap, and at least one coupling guide that extends from the head plate. The at least one coupling guide may include a first reference pin coupling hole, into which a reference pin may be inserted, and a guide hole, into which a coupling member may be inserted.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: September 5, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Nara Han, Kiuk Lee, Kiwon Park
  • Patent number: 9732752
    Abstract: A scroll compressor is provided that may include a casing including a rotational shaft, a discharge cover fixed inside of the casing to partition the inside of the casing into a suction space and a discharge space, a first scroll that is revolved by rotation of the rotational shaft, a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll having an intermediate pressure discharge hole that communicates with a compression chamber having an intermediate pressure of the plurality of compression chambers, a back pressure plate that defines a back pressure chamber that accommodates a refrigerant discharged from the intermediate pressure discharge hole, a floating plate movably disposed on or at a side of the back pressure plate to define the back pressure chamber together with the back pressure plate, and an elastic member disposed between the floating plate and the discharge cover to provide an elastic force to the floating plate.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: August 15, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Honggyun Jin, Suchul Kim, Hyunwook Lee
  • Patent number: 9719511
    Abstract: A scroll compressor of the present invention includes a partition plate, a fixed scroll, an orbiting scroll, a rotation-restraining member, a main bearing, a discharge space, a ring-shaped first seal member and a ring-shaped second seal member. A pressure in the medium pressure space is set lower than that in the discharge space and higher than that in the low pressure space. The first seal member and the second seal member are sandwiched by the partition plate by means of a closing member, the fixed scroll can move in an axial direction of the fixed scroll between the partition plate and the main bearing. If a high pressure is applied to the discharge space, the fixed scroll can be pressed against the orbiting scroll.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 1, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yusuke Imai, Takeshi Ogata, Sadayuki Yamada, Hidenobu Shintaku, Atsushi Sakuda, Takashi Morimoto, Akihiro Hayashi
  • Patent number: 9689391
    Abstract: Scroll compressor designs are provided to minimize vibration, sound, and noise transmission. The scroll compressor has a bearing housing, and orbiting and non-orbiting scroll members. The non-orbiting scroll member has a radially extending flanged portion with at least one aperture substantially aligned with the axially extending bore. At least one fastener is disposed within the aperture and the bore. A sound isolation member contacts at least one of the non-orbiting scroll member, the fastener, or the bearing housing, to reduce or eliminate noise transmission. The sound isolation member may be formed of a polymeric composite having an acoustic impedance value greater than the surrounding materials. The sound isolation member may be an annular washer, an O-ring, or a biasing member, by way of non-limiting example. In other variations, fluid passages are provided within the fastener and/or bearing housing to facilitate entry of lubricant oil to further dampen sound and noise.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: June 27, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Wayne-Chi Fu, Michael A. Saunders, Stephen M. Seibel, Kevin J. Gehret, Robert C. Stover, Patrick R. Gillespie
  • Patent number: 9683568
    Abstract: A scroll compressor is provided. The scroll compressor may include a fixed scroll including a fixed wrap, and an orbiting scroll including an orbiting wrap coupled to the fixed wrap to form a pair of compression chambers. An entire cross-sectional area of bypass holes formed at a compression chamber with a larger volume reduction gradient between the compression chambers may be formed to be larger than an entire cross-sectional area of bypass holes formed at the other compression chamber to prevent over-compression at the compression chamber with the larger volume reduction gradient, thereby enhancing an entire efficiency of the compressor.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: June 20, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongkyu Choi, Inho Won, Cheolhwan Kim
  • Patent number: 9657738
    Abstract: This scroll compressor (2) includes a first fixed scroll (4), an orbiting scroll arrangement (7), a drive shaft (18) adapted for driving the orbiting scroll arrangement (7) in an orbital movement, a driving unit coupled to the drive shaft (18) and arranged for driving in rotation the drive shaft (18) about a rotation axis, and guide elements for guiding in rotation the drive shaft (18), the guide elements comprising at least a first guide bearing (29) and a second guide bearing (30) arranged to respectively guide a first portion (26) and a second portion (27) of the drive shaft (18). The drive shaft (18) extends across the orbiting scroll arrangement (7) such that the first and second portions (26, 27) of the drive shaft (18) are located on either side of the orbiting scroll arrangement (7), the first and second guide bearings (29, 30) being located on either side of the orbiting scroll arrangement (7).
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: May 23, 2017
    Assignee: Danfoss Commercial Compressors
    Inventors: Patrice Bonnefoi, Yves Rosson, Ingrid Claudin
  • Patent number: 9651045
    Abstract: A scroll compressor of the present invention includes a partition plate 20, a fixed scroll 30, an orbiting scroll 40, a rotation-restraining member 90 and a main bearing 60. An inner wall of a fixed spiral lap 32 of the fixed scroll 30 is formed up to a location close to an ending-end of an orbiting spiral lap 42 of the orbiting scroll 40, thereby differentiating, from each other, a containment capacity of one (50A) of compression chambers and a containment capacity of the other compression chamber 50B, the fixed scroll 30 can move in an axial direction of the fixed scroll between the partition plate 20 and a main bearing 60, and high pressure is applied to a discharge space 30H formed between the partition plate 20 and the fixed scroll 30. According to this, the fixed scroll 30 can be pressed against the orbiting scroll 40.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 16, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Ogata, Yusuke Imai, Sadayuki Yamada, Hidenobu Shintaku, Atsushi Sakuda, Takashi Morimoto
  • Patent number: 9624928
    Abstract: The orbiting base plate has a compression side surface and a back pressure chamber side surface. The gas passage has an opening in the compression side surface of the orbiting base plate between portions of the orbiting spiral wall that face each other, and the gas passage has an opening in the back pressure side surface at a position that faces an area on a radially inner side than the outer circumference of the bearing, so as to feed the refrigerant gas in the compression chamber to the back pressure chamber.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: April 18, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Jun Yamazaki, Atsushi Nishizawa, Kenji Maemura, Muneharu Murase
  • Patent number: 9605676
    Abstract: A compressor is provided and may include a driveshaft and an orbiting scroll member driven by the driveshaft. The orbiting scroll member may include an end plate, a spiral wrap extending from the end plate, and a chamber formed by the orbiting scroll member and disposed on an opposite side of the end plate than the spiral wrap. A counterweight may be fixed for rotation with the driveshaft and may be received within the chamber of the orbiting scroll member.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 28, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov
  • Patent number: 9598960
    Abstract: A scroll compressor orbiting scroll bearing lubrication system includes a scroll compressor crankshaft having a lubricating fluid gallery extending therethrough between a first stage orbiting scroll and a second stage orbiting scroll. The first stage employs an orbiting scroll radial bearing and an orbiting scroll hydrodynamic thrust bearing, while the second stage employs an orbiting scroll radial bearing and an orbiting scroll hydrostatic thrust bearing. Lubricating fluid is supplied to the second stage orbiting scroll radial bearing via the lubricating fluid gallery.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: March 21, 2017
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Jerry Allen Rood, Scott Joseph Smerud, Keith Adam Novak, Joseph M. Heger, Derrick Lepak, Michael Gerard Benco
  • Patent number: 9458847
    Abstract: A compressor may include non-orbiting scroll, an orbiting scroll, and a bearing housing. The non-orbiting scroll may include a recess. The orbiting scroll may be intermeshed with the non-orbiting scroll to from a plurality of compression pockets therebetween. The orbiting scroll may include first and second apertures. The first aperture may communicate with one of the compression pockets. The second aperture may communicate with the recess. The bearing housing may support the orbiting scroll and cooperate with the orbiting scroll to define a chamber therebetween. The chamber may communicate with the first and second apertures.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 4, 2016
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, James F. Fogt, Masao Akei
  • Patent number: 9429156
    Abstract: A compressor is provided that may include a cylinder including an outer cylinder portion, an inner cylinder portion, and a vane portion connected between the outer cylinder portion and the inner cylinder portion, which is fixed to a casing. A rolling piston may be slidably coupled to the vane portion to form an outer compression space and an inner compression space while making a turning movement between the outer cylinder portion and the inner cylinder portion. Through this, a weight of a rotating body may be reduced to obtain a low power loss with respect to the same cooling power and a small bearing area, thereby reducing refrigerant leakage as well as easily changing a capacity of a cylinder in an expanded manner. In addition, refrigerant may be discharged in opposite directions to each other in each compression space, thereby reducing vibration noise of the compressor.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: August 30, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Seseok Seol, Bumdong Sa, Byeongchul Lee
  • Patent number: 9377022
    Abstract: A compressor may include a compression mechanism, a driveshaft, and a lever. The compression mechanism may include orbiting and non-orbiting scroll members meshingly engaging each other. The driveshaft may include an eccentric crank pin engaging the orbiting scroll member such that rotation of the driveshaft about a first axis causes orbital motion of the orbiting scroll relative to the non-orbiting scroll. The lever may be mounted for rotation with the driveshaft about the first axis and may be rotatable relative to the driveshaft about a second axis.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: June 28, 2016
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Su Xiaogeng, Sun Qingfeng, Ye Tao
  • Patent number: 9249801
    Abstract: A motor-driven compressor includes a housing assembly, a compression mechanism, an electric motor, a discharge port, an outlet, a discharge passage, discharge valve and a valve device. The compression mechanism is accommodated in the housing assembly. The electric motor drives the compression mechanism. The discharge chamber is formed in the housing assembly. The discharge port is formed in the housing assembly for communication between the discharge chamber and the compression mechanism. The outlet is formed in the housing assembly for communication with an external circuit. The discharge passage is formed in the housing assembly for communication between the discharge chamber and the outlet. The discharge valve is disposed in the discharge chamber for opening and closing the discharge port. The valve device is configured to adjust an opening of the discharge passage.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 2, 2016
    Assignee: KABUSHI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi Fukasaku, Kazuki Najima, Satoru Egawa
  • Patent number: 9206804
    Abstract: With regard to a scroll compressor, a compression portion is rotatably connected with one end portion of a rotating shaft. A first shaft portion formed at one end portion of the rotating shaft is supported through a first bearing by a partition. A second shaft portion formed at the other end portion of the rotating shaft is supported through a second bearing by a cylindrical shaft support. A coil spring is interposed between a second inner race of a second bearing and a spring receiving portion of the rotating shaft which faces the second inner race in the shaft direction of the rotating shaft. The structure reduces vibration toward the shaft length direction of the rotating shaft and minimizes common vibrations together with vehicle side vibrations.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 8, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Shinji Tsubai, Ken Suitou, Hiroyuki Gennami, Hideo Kanai, Kazuhiro Kuroki
  • Patent number: 9200624
    Abstract: A microsystem for converting pressure difference in fluid into mechanical displacement includes input and output nozzles, two interleaved parts, one of which is mobile part, between which the fluid flows. During displacement, the parts define an expanding fluid pocket that moves from the input nozzle to the output nozzle. The micro-system also includes top and bottom planes between which the mobile part is mounted for displacement relative to each plane, an overhanging distal portion along which the fluid flows, and a proximal portion mechanically linked to a plane via a link allowing only longitudinal translation of the proximal portion, and a reinforcement including a first side fastened to one of the planes and, a second side that is either fastened to or in sliding contact with the overhanging distal portion of the mobile part to limit its deformation in a transverse direction perpendicular to the longitudinal direction.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 1, 2015
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventor: Thierry Hilt
  • Patent number: 9127669
    Abstract: A scroll compressor includes a pressing mechanism, a pushback mechanism and an adjustment mechanism. The pressing mechanism applies a pressing force toward a fixed scroll to the back side of an end plate portion of an orbiting scroll. The pushback mechanism applies a pushback force separating the orbiting scroll from a fixed scroll to the front of the orbiting scroll. The adjusting mechanism has a low-pressure portion filled with a fluid of a lower pressure than the discharge pressure of the compression mechanism, and a communicating groove formed in a sliding surface of an outer peripheral portion of the fixed scroll so as to communicate with the low-pressure portion in a first rotational angle range in order to reduce an upsetting moment of the orbiting scroll, and to be blocked from the low-pressure portion in a second rotational angle range other than the first rotational angle range.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: September 8, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshitomo Tsuka, Youhei Nishide, Masateru Yamamoto
  • Patent number: 9127677
    Abstract: A compressor is provided and may include a shell assembly defining a suction pressure region and a discharge pressure region. A first scroll member may include a first discharge port and a first modulation port. A second scroll member may include a first variable volume ratio port. A capacity modulation valve assembly may be in fluid communication with the first modulation port and may be displaceable between open and closed positions to selectively provide communication between a first intermediate compression pocket and the suction pressure region via the first modulation port. A variable volume ratio valve assembly may be in fluid communication with the first variable volume ratio port. The variable volume ratio valve assembly may be displaceable between open and closed positions to selectively provide communication between a second intermediate compression pocket and the discharge pressure region via the first variable volume ratio port.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: September 8, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Roy J. Doepker
  • Patent number: 9097253
    Abstract: The scroll compressor includes stationary and moving scrolls each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a separating plate mounted on the scroll plate of the stationary scroll and defining with the latter a first intermediate volume, and a delivery chamber defined by the separating plate and the sealed casing. The compressor includes a bypass passage arranged to communicate the first intermediate volume with an intermediate compression chamber, a flow passage arranged to communicate the first intermediate volume with the delivery chamber, and a bypass valve associated with the flow passage, each bypass valve associated with a flow passage mounted on the surface of the separating plate turned toward the delivery chamber and movable between closing and opening positions for closing and opening the flow passage.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 4, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Jean-Francois Le Coat, Dominique Gross, Patrick Jallat, Stephane Watts
  • Patent number: 9080567
    Abstract: The compressor includes a sealed enclosure containing a compression stage, an electric motor having a stator provided with a first and second end windings, an intermediate casing surrounding the stator so as to define an annular outer volume with the sealed enclosure, connecting means arranged to fluidly connect the compression stage and a distal chamber defined by the intermediate casing and the electric motor and comprising the second end winding, and a refrigerant suction inlet emerging in the annular outer volume. The connecting means include at least one refrigerant circulation duct situated outside the intermediate casing, and at least one distal window formed on the intermediate casing and emerging on the one hand in the at least one refrigerant circulation duct and on the other hand in the distal chamber near the second end winding of the stator.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: July 14, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: David Genevois, Yves Rosson, Philippe Dugast
  • Patent number: 9033689
    Abstract: The scroll refrigeration compressor includes a sealed casing, stationary and moving volutes including spiral wraps engaged in one another and defining the variable-volume compression chambers, a delivery chamber defined by the plate of the stationary volute and the sealed casing, a heat shield disposed in the delivery chamber and dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing, and at least one flow passage arranged to communicate the first and second volumes. The compressor further includes at least one bypass passage arranged to communicate the first volume with an intermediate compression chamber, and at least one bypass valve disposed in the first volume and movable between closing and opening positions for closing and opening the corresponding bypass passage.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 19, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Christophe Ancel
  • Patent number: 9022759
    Abstract: A compressor including a housing defining a suction pressure region and a discharge pressure region includes first and second scroll members forming compression pockets. A first chamber located on the first end plate of the first scroll member includes first and second passages and a first aperture extending therethrough and in communication with the first chamber. The first aperture provides communication between a compression pocket and the first chamber. A modulation assembly is located in the first chamber and includes a heater and a thermal valve. The valve is displaceable from a first position that isolates the first passage from the second passage and a second position that permits communication between the first and second passages. The valve is displaced as a result of a temperature change provided by the heater.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: May 5, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Sunil Annappa Magadum, Vinayak Madanrao Juge
  • Patent number: 9022757
    Abstract: A compressor is provided that includes an accumulator formed in an internal space of a shell to reduce a size of the compressor. An accumulator space may be formed using the shell of the compressor, thereby simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant. A discharge passage may be formed in a rotating body to enhance a cooling effect of a drive motor, and an oil separating member may be installed in the discharge passage to prevent oil from being excessively leaked out. A center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration noise of the compressor caused by the accumulator. An area for installing a compressor including the accumulator may be minimized to enhance design flexibility of an outdoor device.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: May 5, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jinung Shin, Seseok Seol
  • 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