Weight Balanced Working Member Or Partition Patents (Class 418/151)
  • Patent number: 10180139
    Abstract: A compressor may include a shell containing a motor, a compression mechanism and a lubricant sump. The compressor may also include first and second temperature sensors, and a control module. The first temperature sensor may be at least partially disposed within the lubricant sump and may measure a first temperature of a lubricant at a first position. The second temperature sensor may be at least partially disposed within the lubricant sump and may measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors. The control module may determine a first difference between the first temperature and the second temperature. The control module may determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: January 15, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Troy Richard Brostrom, Pavankumar Pralhad Jorwekar, Prashant Ramesh Jagdale, Vinayak Madanrao Juge, Pankaj Ahire
  • Patent number: 10125768
    Abstract: A compressor includes a shell, a first temperature sensor, a second temperature sensor, and a control module. The shell includes a motor, a compression mechanism and a lubricant sump. The first temperature sensor is at least partially disposed within the shell and configured to measure a first temperature of a lubricant at a first position. The second temperature sensor is at least partially disposed within the shell and configured to measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors and configured to determine a first difference between the first temperature and the second temperature. The control module is configured to determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Troy Richard Brostrom, Pavankumar Pralhad Jorwekar, Prashant Ramesh Jagdale, Vinayak Madanrao Juge, Pankaj Ahire
  • Patent number: 10094382
    Abstract: A compressor includes a shell, a first temperature sensor, a second temperature sensor, and a control module. The shell includes a motor, a compression mechanism and a lubricant sump. The first temperature sensor is at least partially disposed within the shell and configured to measure a first temperature of a lubricant at a first position. The second temperature sensor is at least partially disposed within the shell and configured to measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors and configured to determine a first difference between the first temperature and the second temperature. The control module is configured to determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: October 9, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Troy Richard Brostrom, Pavankumar Pralhad Jorwekar, Prashant Ramesh Jagdale, Vinayak Madanrao Juge, Pankaj Ahire
  • Patent number: 10087937
    Abstract: A scroll compressor is provided, in which a balancing space may be formed on a sub frame to accommodate at least one balance weight, and an oil discharge hole may be formed on a main frame, thereby suppressing, all from being introduced into or remaining in the balancing space to minimize agitation loss due to oil agitation in the balancing space, and forming a thrust surface of the main frame adjacent to an axial center of the drive shaft to suppress axial leakage at a central portion of the orbiting scroll, reducing a size of the main frame to reduce a total weight of the compressor, facilitating a centering operation of the sub frame, and suppressing an outer diameter of the sub frame from being increased, thereby accomplishing miniaturization of the scroll compressor.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 2, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Sanghun Seong, Kitae Jang, Inho Won, Jaesang Lee, Byeongchul Lee
  • Patent number: 10087758
    Abstract: A rotary machine, for directing a quantity of fluid from an inlet to an outlet, comprises one or more elliptical or near-elliptical rotors having planetary rotation within a housing. The interior cavity of the housing comprises an inverse apex region that is in contact with the rotor during its rotation. In various embodiments the rotor and housing can be symmetric or asymmetric in cross-section. Features are described that can improve the operation of the machine for various end-use applications. Such features include cut-outs that are fluidly connected to the inlet or outlet ports of the machine, mechanisms for reducing variation in output flow rate from the rotary machine, linings for the interior cavity of the housing, pressure relief mechanisms, dynamic apex seals and other sealing mechanisms.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: October 2, 2018
    Assignee: Rotoliptic Technologies Incorporated
    Inventors: Greg John Montie, Darren Alan Esau, Jess Donald Lloyd Orton, Curtis Warren Mullen
  • Patent number: 9957962
    Abstract: A scroll compressor is provided that may include a casing including a rotational shaft, a first scroll rotated by rotation of the rotational shaft, the first scroll including a first head plate and a first wrap that extends from the first head plate in a first direction, and a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll including a second head plate and a second wrap that extends from the second head plate in a second direction. Each of the first and second wraps spirally may extend from an outer end toward an inner start end, and the first wrap may have a thickness greater than a thickness of the second wrap.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: May 1, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Yoonsung Choi, Byungkil Yoo, Jinho Kim, Byeongchul Lee
  • Patent number: 9879673
    Abstract: A scroll compressor (10), comprising a fixed scroll (150), a movable scroll (160) and a drive shaft (30); the scroll compressor (10) further comprises a movable scroll counterweight (40); the movable scroll counterweight (40) is configured to rotate with the drive shaft (30); and the centrifugal force of the movable scroll counterweight (40) caused by the rotation acts on the hub (162) of the movable scroll (160). The above structure can effectively reduce the impact of the centrifugal force of the movable scroll on the radial seal of a scroll component, thus achieving proper radial sealing force between the fixed scroll and the movable scroll at any rotating speed.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: January 30, 2018
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Xiaogeng Su, Weihua Guo, Qingfeng Sun, Zhen Hu
  • Patent number: 9835083
    Abstract: An engine configuration that uses multiple opposing piston pairs to form respective expansion chambers for expanding a gas within to move the pistons to drive a main shaft. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. The pistons may be mounted on the circumference of one or more disks. For any given set of choices of numbers of pistons and sizes of pistons, disks, and gears, there are disclosed dimensional constraints useful for more efficient functioning of the engine. This engine can be provided with a compact design which results in high power to weight ratios.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 5, 2017
    Inventors: Stephen L. Cunningham, Martin A. Stuart
  • Patent number: 9714656
    Abstract: A rotary machine includes a rotor, a rotating shaft fixed to the rotor, and a balance weight fixed to the rotor. The balance weight has a balance part fixed to the rotor and not contacting the shaft, a locking part, a shaft abutting part, and a coupling part coupling the balance part and the shaft-abutting part, The locking part is disposed on a side of the shaft opposite from the balance part. The locking part is locked with the shaft to limit movement of the balance part along a direction of centrifugal force. The shaft-abutting part is positioned between the shaft and the balance part, is coupled with the locking part, and contacts the shaft. A length of the locking part along a rotor radial direction is shorter than a rotor radial distance between the shaft and the balance part. The shaft-abutting part is radially shorter than the locking part.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: July 25, 2017
    Assignee: Daikin Industries, Ltd.
    Inventor: Yasuhiro Murakami
  • Patent number: 9670927
    Abstract: A scroll compressor comprises a housing, a cylindrical rotating shaft, a fixed scroll, a movable scroll, and a drive mechanism. The drive mechanism includes an eccentric pin, and a balancer-integrated bush. The eccentric pin extends in parallel with the rotating shaft from the end part of the rotating shaft. The balancer-integrated bush is disposed between the eccentric pin and the movable scroll, includes an eccentric hole into which the eccentric pin is inserted, and configured to rotate around the eccentric pin, and further includes a balancer in an integrated manner, and is configured to rotatably move relative to the rotating shaft. An elastic member is disposed between the balancer-integrated bush and at least one of the rotating shaft and the eccentric pin, and the elastic member regulates the relatively movable range of the rotating shaft and the balancer-integrated bush.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: June 6, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Norimichi Kii
  • Patent number: 9664047
    Abstract: A rotary device is disclosed that includes a rotor comprising a main body and plurality of protrusions extending radially from the main body. At least a pair of voids are provided adjacent to each other in the main body of the rotor between each adjacent pair of the plurality of protrusions, and each pair of voids is spaced from each adjacent pair of voids by a distance greater than that between each adjacent void in each pair of voids.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: May 30, 2017
    Assignee: Mallen Research Limited Partnership
    Inventors: David Alton McDaniel, Jr., James W. Newman, Jr.
  • Patent number: 9617997
    Abstract: A scroll compressor includes a compression mechanism, a crankshaft, and a drive motor. The compression mechanism has a fixed scroll and a movable scroll and is configured to compress a fluid. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The drive motor has a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll. At least one of the main shaft of the crankshaft and the rotor of the drive motor is provided with a weight. The weight being is arranged to balance a centrifugal force of the movable scroll during rotation, and to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 11, 2017
    Assignee: Daikin Industries, Ltd.
    Inventor: Takashi Uekawa
  • Patent number: 9435342
    Abstract: A horizontal type scroll compressor includes a motor housing with a driving motor therein, a main scroll coupled to one side of the motor housing and having a fixed wrap for forming compression chambers, an orbiting scroll having an orbiting wrap and coupled to a crankshaft inserted through the main scroll, the orbiting scroll forming a first compression chamber and a second compression chamber on an outer surface and an inner surface of the orbiting wrap while performing an orbiting motion, and a front housing hermetically coupled to the main scroll. With the configuration, the number of components and assembly parts may be reduced, resulting in reduction of fabricating costs. Also, an inclination of the orbiting scroll can be prevented as the crankshaft is inserted through the fixed wrap and the orbiting wrap.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 6, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Myungkyun Kiem, Kijung An, Ikseo Park, Taesoon Choi
  • Patent number: 9353749
    Abstract: An orbiting plate scroll of a scroll pump includes an orbiting plate having a first side and a second side, an orbiting scroll blade projecting in an axial direction from the first side of the orbiting plate, and a flexure whose compliance is in the axial direction. The flexure is coupled to the orbiting plate at the second side of the orbiting plate, and couples the orbiting plate and orbiting scroll blade to bearings that allow for free rotation of the orbiting plate scroll about a longitudinal axis, while constraining motion of the orbiting plate scroll in the remaining degrees of freedom.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 31, 2016
    Assignee: Agilent Technologies, Inc.
    Inventor: Ronald J. Forni
  • Patent number: 9004887
    Abstract: A thrust plate for a compressor may include first and second ends and a feed hole. The first end may include a thrust surface. The second end may include a lubricant accumulation feature. The feed hole may extend between the lubricant accumulation feature and the thrust surface to provide communication therebetween. The feed hole may be angled relative to a longitudinal axis of the thrust plate such that lubricant flows through the feed hole from the lubricant accumulation feature to the thrust surface.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: April 14, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Linzhi Chao, Shuichong Fan, Chao Jiang
  • Patent number: 8992188
    Abstract: In a revolution type compressor using a balance weight for balancing a rotating mass, the effect of oil churn reduction is enhanced, and compressor input is reduced. A balance weight fixed to a drive shaft between a rotor of an electric motor 4 and a compression mechanism includes a weight portion in a substantially semicircular column shape for balancing a rotating mass, a cover portion which is substantially semi-cylindrical and has an opening in the vicinity of a top and bottom at an opposite side in a radial direction from the weight portion, and a hollow space surrounded by the weight portion and the cover portion. Further, a space for discharging oil is provided between the balance weight and the rotor. By the structure, reduction in oil churn, and reduction in input of the compressor are realized, and the compressor with less power consumption is obtained.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: March 31, 2015
    Assignee: Hitachi Appliances, Inc.
    Inventors: Satoshi Nakamura, Mutsunori Matsunaga, Takeshi Tsuchiya, Masatsugu Chikano
  • Patent number: 8794941
    Abstract: A positive displacement compressor designed for near isothermal compression. A rotor includes a curved sealing portion that coincides with a in an interior rotor casing wall. Liquid injectors provide cooling liquid. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. Gate positioning systems position the gate in this manner, taking into account the shape of the rotor. Outlet valves allow for expulsion of liquids and compressed gas. The unique geometry and relationship between the parts provides for efficiencies and higher pressures not previously found in existing compressor designs.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: August 5, 2014
    Assignee: Oscomp Systems Inc.
    Inventors: Pedro Santos, Jeremy Pitts, Andrew Nelson, Johannes Santen, John Walton, Mitchell Westwood, Harrison O'Hanley
  • Patent number: 8753098
    Abstract: A refrigerant compressor includes: an electric motor including a stator and rotor inside a sealed vessel; a compressing mechanism driven by a crank shaft in the rotor; a lower portion oil pool storing in the sealed vessel lubricating oil that lubricates the compressing mechanism; an upper counterweight on an upper end of the rotor. Refrigerant gas compressed by the compressing mechanism is discharged inside the sealed vessel, passes through a gas channel formed on the electric motor, moves from a lower space to an upper space with respect to the electric motor, and is discharged outside the sealed vessel. An oil return flow channel is formed on the upper end of the rotor toward a lower end from a vicinity of a leading end portion of the upper counterweight in a direction of rotation, and oil expressed in a vicinity of the rotor is directed to the oil return flow channel.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuhide Yokoyama, Toshihide Koda, Teruhiko Nishiki, Hideaki Maeyama, Taro Kato, Keisuke Shingu, Takuho Hirahara, Shin Sekiya
  • Patent number: 8747086
    Abstract: A scroll compressor is constructed by combining a stationary scroll and an orbiting scroll formed by erecting a scroll-shape wrap upright on a base plate meshing with each other. A scroll member constructing the stationary scroll or the orbiting scroll is constructed of an inner layer member 601 forming a core metal and an outer layer member 600 arranged so as to surround the inner layer member and forming an outer layer part, the inner layer member is constructed of a material with higher modulus of elasticity than that of the outer layer member, and separation prevention parts (uneven parts 603, depressions 604, or holes 605) preventing the inner layer member and the outer layer member from separating with each other due to difference in coefficient of thermal expansion thereof are arranged in the inner layer member.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: June 10, 2014
    Assignee: Hitachi Appliances, Inc.
    Inventors: Masatsugu Chikano, Kazuo Sakurai, Mutsunori Matsunaga, Satoshi Nakamura
  • Patent number: 8602756
    Abstract: Provided is a scroll type compressor which reduces variations in the pressing load of a rotating scroll on a fixed scroll, reduces the impact at the start of the compressor and suppresses noises, and can provide excellent durability. A peripheral elastic body 51 and a bottom-portion elastic body 52, which is brought into a compressed condition in the axis line direction of the main shaft 31, are interposed between a stopper pin 41 on the rotating scroll side and a concave portion 42 on the main shaft 31 side, whereby working errors of each part are compensated and the rotating scroll is constantly brought into close contact with the fixed scroll to maintain the sealing of the compression chamber.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: December 10, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Makoto Takeuchi, Takayuki Suzuki, Masahiro Ohta, Kazuhide Watanabe
  • Patent number: 8579615
    Abstract: A rotary compressor or expander include a cylindrical housing chamber, a rotatable cylindrical rotor mounted eccentrically with respect to housing chamber center, a cylindrical rotor liner free to move around the rotor, and a pivoting generally circular arc vane hinged to the rotor liner. Cavity or buckets engraved to the outer surface of the rotor liner together with corresponding inlet nozzle flow provide additional momentum impulse transfer from working fluid to expander eccentric rotor. The inlet of the rotary expander is equipped with a rotating valve synchronous to the eccentric rotor, regulating the admission time and duration of the entering working fluid. The exhaust of the rotary compressor is equipped with either a check valve or a rotating valve synchronizing the fluid discharge time and duration.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: November 12, 2013
    Assignee: Pars Makina Sanayi Ve Ticaret Limited Sirketi
    Inventor: Ibrahim Sinan Akmandor
  • Patent number: 8550057
    Abstract: A supercharger is provided, comprising a plurality of rotatable supercharger rotors each having a plurality of interleavable lobes configured to move air from an inlet to an outlet of the supercharger. Inner chambers in the lobes define an end opening and perforated end faces, at the end openings defining at least one port, having a length and a diameter. The at least one port is configured to operate with an associated air mass in the inner chamber to attenuate sound adjacent to the end opening.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 8, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Gregory P. Prior
  • Patent number: 8529233
    Abstract: A displacement machine of spiral-type construction for a compressible medium includes a displacement body having a carrier disc and helical blades extending out from both sides of the carrier disc. The carrier disc has a hub which is supported by a hub bearing on an eccentric disc which is part of a driven drive shaft. The drive shaft is supported inside a housing by a first bearing and a second bearing. These bearings are arranged in receptacles which fully project into the feed chambers of the housing so that the bearings are positioned in close proximity to the eccentric disc.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: September 10, 2013
    Assignee: Spinnler Engineering
    Inventor: Fritz Spinnler
  • Patent number: 8496444
    Abstract: A water-lifting pump apparatus which is free of a discharge valve and a check valve, is low in cost, and is capable of reducing vibration and noise due to a waterfall after the end of water pumping operation. The water-lifting pump apparatus has a suction tank (10), a discharge tank (20), a pump (30) for pumping water in the suction tank (10) into the discharge tank (20), and a discharge piping (50) connected to a discharge side of the pump, an actuator (60) for actuating the pump (50), a reverse flow preventing mechanism (80) for preventing a reverse flow of water pumped into the discharge tank (20) toward the discharge piping (50), and a back flow rate control (90) for controlling the flow rate of a waterfall falling from the discharge piping (50) into the suction tank (10) when pumping operation is finished.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 30, 2013
    Assignee: Ebara Corporation
    Inventors: Isamu Kamata, Shinji Suzuki, Hideki Kanno, Takashi Enomoto, Masahiro Kuramasu
  • Patent number: 8337185
    Abstract: A rotary compressor includes a compressor casing which includes a compression unit for sucking refrigerant gas from a low pressure side of a refrigerating cycle and ejecting the gas to a high pressure side of the refrigerating cycle, and a motor for driving the compression unit through a rotating shaft. The compressor has a gas hole formed on a rotor of the motor for causing a refrigerant gas below the motor to pass upward, and an oil separation plate having a central cylindrical portion, a curved portion continuous to the central cylindrical portion and curved in a radial direction, and an outer peripheral disk portion continuous to the curved portion and is fixed on the rotor by a rivet so that a lower end portion of the central cylindrical portion comes into close contact with the upper end of the rotor or an upper end plate of the rotor.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: December 25, 2012
    Assignee: Fujitsu General Limited
    Inventor: Junya Tanaka
  • Publication number: 20120315176
    Abstract: Disclosed is a small rotary cylinder device wherein friction loss is reduced and energy is conserved by reducing effects of a reaction force applied from cylinders to pistons, which is incorporated in a piston composite body and which linearly reciprocates, the piston composite body being eccentrically connected to a first crank shaft rotating about a shaft. Guide bearings (1c) guide linear reciprocation of first and second piston assemblies (7, 8) attached to second tube bodies (6b), which are caused by rotating a first crank shaft (5) about a shaft (4) and rotating a piston composite body (P) about the first crank shaft (5), in the radial direction of a rolling circle of second imaginary crank shafts (14a, 14b), which has a radius 2r and which is centered at the shaft (4).
    Type: Application
    Filed: February 1, 2011
    Publication date: December 13, 2012
    Inventors: Hiroshi Ogawa, Fumito Komatsu
  • Patent number: 8287257
    Abstract: A rotary compressor including a housing, a first scroll member, a second scroll member in meshing engagement with the first scroll member, and an Oldham coupling coupled to the second scroll member to inhibit the relative rotational movement between the first scroll member and the second scroll member. The Oldham coupling including a first riding pad, a second riding pad, a third riding pad is positioned, and a fourth riding pad positioned such that the first riding pad and the fourth riding pad are in an overlapping arrangement.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 16, 2012
    Assignee: Thermo King Corporation
    Inventor: Valery Dunaevsky
  • Patent number: 8152503
    Abstract: A baffle member for use in scroll compressors. In one exemplary embodiment, the baffle member is attached to a portion of the crankcase and, in use, deflects lubricant that may be thrown from the thrust surface of the crankcase during operation of the compressor away from the flow of working fluid, and also aids in directing the flow of working fluid away from the thrust surface of the crankcase and toward a suction inlet in the compression mechanism.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: April 10, 2012
    Assignee: Tecumseh Products Company
    Inventor: David K. Haller
  • Publication number: 20120039733
    Abstract: Rotary piston steam engine with equal double rotary pistons is provided with a balanced rotary variable inlet cut-off valve for enhanced efficiency. The exhaust steam from the primary expansion is routed to secondary expansion avoiding back pressure for additional efficiency. The rotary valve has balanced dual inputs and outputs on opposite sides. The exhaust steam from the primary expansion is taken off when the trailing face of the rotary piston passes the inlet port of the expansion chamber housing, the exhaust outlet secondary expansion being placed approximately 180 degrees from the primary expansion inlet in the curved portion of the expansion chamber housing wherein back pressure is not imparted to the primary expansion.
    Type: Application
    Filed: June 8, 2010
    Publication date: February 16, 2012
    Inventors: Errol John Smith, Kenneth Murray Smith
  • Patent number: 7985055
    Abstract: A balance shaft function may be realized without employing a balance shaft, when an oil pump includes an inner rotor fixed to the rotation shaft and an outer rotor that rotates with the inner rotor if at least one rotor of the inner and outer rotors has a mass center formed apart from a rotation center.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: July 26, 2011
    Assignee: Hyundai Motor Company
    Inventors: Min Sig Shin, Myung Rae Cho, Hong Wook Lee, Wootae Kim, Jin Woo Cho
  • Publication number: 20110135527
    Abstract: A balance shaft module equipped with a dual pump including a main oil pump and a sub-oil pump may include a pump rotor rotatably coupled to a housing, a discharge space formed in the housing for discharging oil in the sub-oil pump, a pulse chamber formed in the housing to increase the discharge space, wherein the oil discharged through the discharge space is merged with the oil flowing through the pulse chamber such that discharge pulse pressure is reduced, and an eccentric washer having a discharging opening space formed by cutting off a portion inward from the outside, wherein the discharge opening space of the eccentric washer is connected to the discharge space to fluid-communicate with the discharge space of the pump rotor.
    Type: Application
    Filed: October 26, 2010
    Publication date: June 9, 2011
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Gabseok KO
  • Patent number: 7946834
    Abstract: A balance shaft module according to the present invention includes a first balance shaft equipped with a first eccentric balance weight, a second balance shaft equipped with a second eccentric balance weight, and a hydraulic pump that is operated by the first balance shaft and the second balance shaft, wherein the hydraulic pump includes a first gear equipped on the first balance shaft and a second gear equipped on the second balance shaft and externally meshed with the first gear.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: May 24, 2011
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Myung Rae Cho, Jin Woo Cho, Woo Tae Kim, Hong Wook Lee, Min Sig Shin
  • Patent number: 7942656
    Abstract: A compressor and device for reducing vibration therefor is provided herein. The compressor includes a compression device having a compression chamber, and configured to receive, compress, and output a refrigerant, a drive motor configured to rotate the compression device to compress a refrigerant within the compression chamber, and a torsional vibration absorbing device attached to the motor and configured to absorb torsional vibration.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: May 17, 2011
    Assignee: LG Electronics Inc.
    Inventors: Jeong-Hwan Suh, Nam-Soo Lee, Seung-Yup Kim
  • Patent number: 7766632
    Abstract: A scroll-type compressor includes a compression unit, a main frame supporting the compression unit, and a driving shaft having an oil supply path. The oil supply path is located eccentrically with the driving shaft and an upper part of the driving shaft is supported by the main frame. The compressor also has a motor for rotating the driving shaft, an oil cap located on an upper side of a rotor of the motor, and a balance member to compensate the driving shaft.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: August 3, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jeong Hwan Suh, Cheol Hwan Kim, Dong Koo Shin
  • Patent number: 7473083
    Abstract: A scroll compressor including an oil separator is provided. The oil separator may be provided with a rotor or a shaft of a driving motor of the compressor so that refrigerant gas and oil discharged from a compression chamber may be separated by a centrifugal force. The oil separator may include a plurality of oil separation holes formed in an eccentric mass and a rotor. Rotation of the shaft/rotor and subsequent rotation of the eccentric mass generates a centrifugal force, causing separation of oil from refrigerant gas contained in the oil separation holes. Accordingly, oil is maintained in the casing, and is prevented from being discharged out of the compressor, thus preventing abrasion due to oil deficiency and a degradation in reliability of the compressor. Furthermore, oil is prevented from being discharged to a refrigerating system externally coupled to the compressor, thereby enhancing performance of the refrigerating system.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: January 6, 2009
    Assignee: LG Electronics Inc.
    Inventors: Hae-Jin Oh, Cheol-Hwan Kim, Hong-Gyun Jin, Chan-Hwa Jeong
  • Patent number: 7467935
    Abstract: A vane-type fluid displacement unit having a housing, a drive shaft extending through the housing, a rotor secured to the drive shaft and disposed within the housing, the rotor having at least one non-smooth top or bottom surface, and at least one vane secured to the rotor.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: December 23, 2008
    Assignee: Sauer-Danfoss, Inc.
    Inventors: Michael A Betz, Eric D Bretey, Robert J Klinkel, Kevin J Landhuis
  • Patent number: 7455508
    Abstract: A scroll type fluid machine having a driving system including a counter weight and a sub weight, in which an efficiency of an assembling operation is enhanced by simplifying an assembling structure of the driving system. In the fluid machine, a sub weight (17) is provided on a rotary shaft (16) and a counter weight (20) is provided on a driving bush (19) . The driving bush (19) is attached to the rotary shaft (16) by an attachment bolt (23) to prevent relative rotation between the rotary shaft and the driving bush. The rotary shaft (16) supported by a main bearing (18) and is driven in rotation by a motor (9), with the result that an orbiting scroll (4) performs an orbiting motion with respect to a fixed scroll (2).
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: November 25, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kazutaka Suefuji, Shunsuke Mori, Junichi Nagasawa
  • Patent number: 7435067
    Abstract: A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment member extends through the counterweights and the rotor body to secure the counterweights and the plurality of laminations. The counterweights include steel inserts which cooperate with the attachment member to provide a metal to metal clamping for the rotor body with a steel connection being maintained through the rotor.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: October 14, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, John P Elson, William E Ramey
  • Patent number: 7393191
    Abstract: In the case where a radial fan is provided on the upper end side of a rotor to provide an air circulating flow containing refrigerant gas so as not to hinder the flow of lubricating oil in a motor chamber, by which a motor is cooled, in order to reduce the cost of the radial fan, the radial fan is constructed by combining a plurality of blades (fan blades) (242) formed radially in the range of approximately 180° opposed to an upper balancer (270) so as to have a height smaller than the height of the upper balancer (270), and a fan cap (260) including a fan cover portion (262) covering the top faces of the blades (242) and an engagement portion (263) fixed to the upper end side of the rotor.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: July 1, 2008
    Assignee: Fujitsu General Limited
    Inventors: Naoya Morozumi, Junya Tanaka
  • Publication number: 20080138229
    Abstract: An engine includes a piston and a stator housing. The stator housing includes a channel in which the piston is disposed, an input port that is adapted to receive a working fluid into the channel, and an output port that is adapted to exhaust the working fluid from the channel. The channel is arranged such that the piston is able to move continuously in a single direction within the channel.
    Type: Application
    Filed: August 10, 2007
    Publication date: June 12, 2008
    Inventor: Steve Truluck
  • Patent number: 7384250
    Abstract: An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving motor; and a lower fixed oil guide fixedly coupled between the balance weight and the rotor, for preventing oil from being spread in a casing and guiding the oil downwardly to a bottom of the casing, whereby an oil leakage to the outside of the casing can be minimized, the number of construction components can be reduced, and assembling processes can be simplified.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: June 10, 2008
    Assignee: LG Electronics Inc.
    Inventors: Dong-Koo Shin, Cheol-Hwan Kim, Yang-Hee Cho
  • Patent number: 7371059
    Abstract: A scroll compressor utilizes scroll wrap profiles which are designed with a rapid compression scroll wrap profile. This profile utilizes a shorter wrap and lower vane aspect ratios during the compression process. The non-orbiting scroll member is integrated with the main bearing housing. The drive shaft extends through the main bearing housing, through the non-orbiting scroll member and through the orbiting scroll member. In one embodiment, a counterweight is disposed adjacent the orbiting scroll member. In another embodiment, and upper bearing housing is disposed adjacent the orbiting scroll member. In yet another embodiment, an upper bearing housing is disposed adjacent the orbiting scroll member with a counterweight disposed adjacent the upper bearing housing.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: May 13, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill Ignatiev, James F. Fogt
  • Publication number: 20080044306
    Abstract: The rotary-piston machine consists of two operating units. The first one comprises a horizontal operating cylinder (1) with cylindrical shaft (5), connected to the main shaft (4) and sealed with rings to the walls of the cylinder (1). The shaft (5) has a first friction element (9) pressed against the internal wall of the cylinder (1). The second unit comprises a cylindrical body (15) mounted to the main shaft (4) with a firmly connected to its circumference inner ring (16) off a bearing with an outer ring (17) provided of an articulated joint (18) connected to a frame (19) that is connected to a valve (13) which press a second friction element (14) to the shaft (5). Both units move in syncronisation.
    Type: Application
    Filed: November 5, 2004
    Publication date: February 21, 2008
    Inventor: Lyubcho Kirilov Georgiev
  • Patent number: 7306440
    Abstract: A vane pump includes a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation thereto, forming a circular pump chamber between the rotor and the inner bore. The circular pump chamber is divided by vanes held in the rotor into pump chambers changing their capacities according to rotation of the rotor. A gravity center of the rotor is shifted from the rotational center of the rotor by removing or adding some weight, so that an imbalanced centrifugal force is applied to the rotor. The driving shaft and the rotor are tightly coupled to each other by the imbalanced centrifugal force even if there is a small gap or dimensional errors therebetween.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: December 11, 2007
    Assignee: Denso Corporation
    Inventor: Hitoshi Amano
  • Patent number: 7162797
    Abstract: A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compression unit. The balancer is mounted on the drive shaft and includes a main portion and adjustable portion for correcting the imbalance on the drive shaft. Preferably, at least one of the weight and the shape of the adjustable portion is adjustable.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: January 16, 2007
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masato Sowa, Yoshiyuki Nakane, Toshiro Fujii, Tatsuyuki Hoshino, Ryuta Kawaguchi, Takahiro Moroi, Tsutomu Nasuda
  • Patent number: 7134845
    Abstract: A variable capacity rotary compressor including a housing to define therein two compression chambers having different capacities, a rotating shaft transmit ting a rotating force from a drive unit to the two compression chambers, two eccentric parts are provided on an outer surface of the rotating shaft to be placed in the two compression chambers, respectively. Two eccentric bushes, having different weights respectively fitted over the eccentric parts to rotate relative to the rotating shaft within predetermined angles, a pair of force transmission parts, provided on opposite sides of the eccentric unit, to receive the rotating force of the rotating shaft so that one of the two eccentric bushes rotates while being eccentric from the rotating shaft and a remaining one of the two eccentric bushes rotates while being released from eccentricity from the rotating shaft, according to a rotating direction of the rotating shaft.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: November 14, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon Joo Lee, Seung Kap Lee, Chun Mo Sung
  • Patent number: 7114930
    Abstract: There is provided an efficient compressor which is simple in structure and small in torque fluctuation. The compressor comprises a compression element which comprises a cylinder having a compression space formed therein, a suction port and a discharge port which communicate with the compression space in the cylinder, a compression member which comprises continuous thick and thin parts, one surface of which inclines, which is arranged in the cylinder to rotate, and which compresses fluids sucked through the suction port and discharges the compressed fluids through the discharge port, and a vane which is arranged between the suction port and the discharge port to abut on one surface of the compression member, and which partitions the compression space of the cylinder into a low pressure chamber and a high pressure chamber.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: October 3, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hirotsugu Ogasawara, Takahiro Nishikawa, Akihiro Suda, Masayuki Hara, Makoto Oonuki
  • Patent number: 7104771
    Abstract: An eccentric bush structure in a radial compliance scroll compressor including an eccentric bush fitted around a crank pin eccentrically provided at an upper end of a crankshaft, crank pin and stopper holes provided at the eccentric bush, and a weight member adapted to increase a weight of the eccentric bush. The stopper hole overlaps with the crank pin hole such that a stopper received in the stopper hole is radially protruded into the crank pin hole toward a vertically-extending cut surface formed at the crank pin to selectively come into contact with the cut surface in accordance with a rotation of the crank pin.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: September 12, 2006
    Assignee: LG Electronics Inc.
    Inventors: Se-Heon Choi, Byung-Kil Yoo, Yang-Hee Cho
  • Patent number: 6860729
    Abstract: A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compression unit. The balancer is mounted on the drive shaft and includes a main portion and adjustable portion for correcting the imbalance on the drive shaft. Preferably, at least one of the weight and the shape of the adjustable portion is adjustable.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: March 1, 2005
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masato Sowa, Yoshiyuki Nakane, Toshiro Fujii, Tatsuyuki Hoshino, Ryuta Kawaguchi, Takahiro Moroi, Tsutomu Nasuda
  • Publication number: 20040219048
    Abstract: A second frame is arranged between a first frame and an orbiting scroll, and a central space and an outer peripheral space are sealed off by a seal portion, which is formed between an end surface of a shaft support of the orbiting scroll and the second frame. Also, a balance weight is arranged in a space between an underside of the second frame and the first frame. Thereby, most of an oil having lubricated respective shaft supports flows into the space below the second frame, and the oil accumulated in the space is discharged through an oil scavenge pipe into an oil reservoir in a lower portion of a closed vessel. Also, since the balance weight can be assembled from a side of the orbiting scroll in a state, in which the second frame is removed, it is possible to mount the balance weight close to the orbiting scroll.
    Type: Application
    Filed: September 8, 2003
    Publication date: November 4, 2004
    Inventors: Takeshi Tsuchiya, Takao Mizuno, Mutsunori Matsunaga, Masaru Ohtahara, Syunsuke Yasunori, Isao Hayase, Isamu Tsubono, Kazuyuki Fujimura