Heat Exchange Or Non-working Fluid Lubricating Or Sealing Patents (Class 418/83)
  • Patent number: 10718334
    Abstract: The application is directed to a compressor having a housing with a fluid compression region to rotatably support a compressor rotor. The housing includes an inner wall formed as a thin wall positioned about the compression region and an outer wall spaced radially outward of the inner wall. A cooling chamber is formed in a space between the inner and outer walls. A rib formed on the inner wall projects into the cooling chamber to provide structural support and prevent thermal deformation of the thin inner wall during compressor operation.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 21, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Sven Herlemann, Jan Hauser, Michael Beinert, Philipp Schulze-Beckinghausen
  • Patent number: 10539351
    Abstract: A system may include a compressor including a compression mechanism having first and second compression members defining a compression pocket disposed between the first and second compression members that decreases in volume during operation of the compression mechanism. A heat exchanger receives compressed working fluid from the compressor. An expansion device may be disposed downstream of the heat exchanger. A lubricant separator receives lubricant and working fluid discharged from the compression mechanism and provides separated lubricant to the compression mechanism. A lubricant-injection flow path may include a lubricant fitting and extends between the lubricant separator and the compression pocket such that separated lubricant is injected into the compression pocket through the lubricant fitting.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: January 21, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Robert C. Stover, Michael M. Perevozchikov
  • Patent number: 10495090
    Abstract: A rotor for a compressor system includes a rotor body having a coolant manifold with an inlet runner and a plurality of coolant supply conduits extending from the inlet runner toward an inner heat exchange surface. The coolant supply conduits may have a circumferential and axial distribution, and extend through struts enhancing stiffness in the rotor body.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: December 3, 2019
    Assignee: Ingersoll-Rand Company
    Inventors: James Christopher Collins, Willie Dwayne Valentine, Stephen James Collins
  • Patent number: 9879568
    Abstract: Method for coupling a first heat-requiring industrial process to a second cold-requiring industrial process, whereby a first circuit for energy recovery (1) from the first industrial process transfers heat to a second circuit for cold production (2) for the second industrial process, wherein the first circuit for energy recovery (1) the energy carrier is a binary mixture of water and ammonia that has two-phases and is compressed by a compressor (7) specifically suitable for compressing a two-phase fluid such as a compressor with a Lysholm rotor or equipped with vanes, whereby all or part of the liquid phase evaporates as a result of compression such that overheating does not occur and such that less working energy must be supplied.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: January 30, 2018
    Assignee: P.T.I.
    Inventor: Petrus Carolus Van Beveren
  • Patent number: 9803900
    Abstract: A screw compressor and a chiller unit are provided. An oil separator of the screw compressor may include an outer cylinder, an inner cylinder positioned inside the outer cylinder, and an introducing flow path. The upper end of the inner cylinder is held by the oil separator and the outer wall of the inner cylinder is held independently of the inner wall of the outer cylinder. The diameter of the inner wall of the outer cylinder may gradually be reduced along the swirl flow path. The refrigerant via the introducing passage swirls and goes down along the swirl flow path and is separated into gas refrigerant and oil. The separated gas refrigerant flows from the lower end of the inner cylinder into the inner cylinder and goes up, and the separated oil flows down along the inner wall surface of the outer cylinder.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: October 31, 2017
    Assignee: Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited
    Inventors: Ryuichiro Yonemoto, Yasuaki Iizuka, Eisuke Kato, Shu Kuriyama, Masahiro Takebayashi
  • Patent number: 9435204
    Abstract: An engine includes a housing having a single wall, where the wall has a rib and a flange, and the wall provides a primary structure and cooling for the engine. A closeout is attached to an outer surface of the wall, and the closeout and the wall form a cavity. The closeout provides a secondary structure for containing a coolant fluid flow within the cavity. The closeout may be corrugated, and the ribs may be exposed to the cavity.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: September 6, 2016
    Assignee: United Technologies Corporation
    Inventor: Mark David Horn
  • Patent number: 9347448
    Abstract: A control valve for an oil-injected screw-type compressor, in particular for installation in a vehicle, wherein oil located in a screw-type compressor housing can be supplied in a controlled manner via the control valve to a heat exchanger and/or to a bypass in such a way that cold oil is conducted through a bypass around the heat exchanger and warm oil is conducted through the heat exchanger. A control valve is provided for an oil-injected screw-type compressor and ensures rapid heating of the oil in the screw-type compressor even with a short activation time. The control valve has a control piston that is actuated by a control element and cooperates respectively with a heat exchanger opening disposed in a control valve housing and a bypass opening, and that the control piston controls at least one bypass opening which cooperates with the heat exchanger opening.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 24, 2016
    Assignee: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH
    Inventors: Engelbert Köck, Michael Hofstetter
  • Patent number: 9328731
    Abstract: An oil free compressor includes a cooling fan, a low-pressure stage air-cooled heat exchanger, a high-pressure stage air-cooled heat exchanger, and a lubricating oil air-cooled heat exchanger. The cooling fan is provided independently from each of the low-pressure stage air-cooled heat exchanger, the high-pressure stage air-cooled heat exchanger, and the lubricating oil air-cooled heat exchanger.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: May 3, 2016
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Toshiaki Yabe, Natsuki Kawabata, Masakatsu Okaya, Kohei Sakai
  • Patent number: 9028230
    Abstract: A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three equally spaced idlers. One idler then transmits rotation and torque into the second stage. The second orbiting scroll has involutes upon both surfaces to engage the second fixed scroll inwardly and the first fixed scroll outwardly. The first fixed scroll has fins upon its back that extend into the atmosphere to transfer heat to air cool the pump. This pump also has a fan accelerating heat transfer. The pump operates the scrolls directly from a motor or from a motor and magnetic coupling so that the atmosphere does not infiltrate the pump.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: May 12, 2015
    Assignee: Air Squared, Inc.
    Inventor: Robert W. Shaffer
  • Patent number: 8920538
    Abstract: A method and a device for compressing a gas-phase medium, particularly hydrogen or natural gas, in a single-stage or multistage process using at least one piston compressor, wherein the medium may have a water content up to total saturation with water. The medium to be compressed is heated before the compression at least to such point that the water is unable to condense out during the compression process, and the compressed medium undergoes a water separation process.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: December 30, 2014
    Assignee: Linde Aktiengesellschaft
    Inventors: Robert Adler, Sascha Dorner, Georg Siebert, Martin Stehrlein
  • Patent number: 8915725
    Abstract: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size and 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 center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration caused by the accumulator. An eccentric portion may be provided at the stationary shaft to secure a spacious compression space. Both ends of the stationary shaft may be supported by a frame to reduce vibration. A rotor and a cylinder may be coupled with a bearing to reduce cylinder deformation. An installation area of the compressor may be minimized to enhance design flexibility of an outdoor device employing the compressor and minimize interference with other components.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 23, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Bumdong Sa
  • Patent number: 8899351
    Abstract: A downhole drilling motor for well drilling operations includes a tubular housing and a stator disposed in the tubular housing. The stator defines an internal cavity passing therethrough, wherein the stator includes one or more lobes defining at least a portion of the cavity. A rotor is operatively positioned in the internal cavity to cooperate with the one or more lobes of the stator. At least a portion of the stator or of the rotor comprises a memory material adapted to expand or contract when heat is applied by a localized heating module to the memory material. A fluid escape gap between the rotor and stator is adjusted by applying heat to the rotor and/or stator. At least one controller is adapted to receive input data and provide output signals increasing and/or decreasing electrical current applied to the at least one localized heating module.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: December 2, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard Thomas Hay, Robello Samuel
  • Publication number: 20140334960
    Abstract: The present invention relates to an automotive vacuum pump 10. The vacuum pump 10 has a casing 12 defining a cavity having an inlet 14 and an outlet 16, wherein the cavity contains a rotor 18 and a vane slidably mounted to the rotor 18. The rotor 18 extends through a side 21 of the casing 12 to the exterior thereof and is provided with a coupling arrangement 26 to couple the rotor 18 to a drive member. The vacuum pump 10 is provided with a lubrication conduit 50, 56, 66, 68, 70, 72, 74 for the supply of lubricating fluid to the coupling arrangement 26, the conduit 50, 56, 66, 68, 70, 72, 74 including a portion 70, 72, 74 which extends through the rotor 18 and the coupling arrangement 26.
    Type: Application
    Filed: August 15, 2012
    Publication date: November 13, 2014
    Applicant: WABCO AUTOMOTIVE UK LIMITED
    Inventors: David Heaps, Simon Warner, John Hegarty
  • Patent number: 8882482
    Abstract: A compressor has auxiliary and main oil reservoir chambers that retain lubricant oil that is separated from refrigerant in an oil separation chamber. A part of the auxiliary oil reservoir chamber is defined by a peripheral wall of the oil separation chamber. An introducing passage for introducing lubricant oil in the oil separation chamber to the auxiliary oil reservoir chamber is formed in the peripheral wall. The inlet of the introducing passage opens to the oil separation chamber on the inner surface of the peripheral wall. The outlet of the introducing passage opens to the auxiliary oil reservoir chamber. The main oil reservoir chamber is located below the auxiliary oil reservoir chamber in the direction of gravity. A drain port for draining lubricant oil in the auxiliary oil reservoir chamber to the main oil reservoir chamber is formed in a bottom wall of the auxiliary oil reservoir chamber.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tsubasa Mitsui, Shinichi Sato, Kazuo Kobayashi, Akio Saiki, Akihiro Nakashima, Shinsuke Asou
  • Publication number: 20140314607
    Abstract: A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant, the refrigerant compressor including: a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; and refrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion, wherein at least one of the sliding surfaces of the sliding component is formed by non-metal, and wherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 23, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hideaki MAEYAMA, Koichi SATO
  • Publication number: 20140314606
    Abstract: A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant, the refrigerant compressor including: a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; and refrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion, wherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 23, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hideaki MAEYAMA, Koichi SATO
  • Patent number: 8864480
    Abstract: An oil recovery member, a motor mechanism, and a compressor using the same are provided. The oil recovery member is provided to prevent oil rising along a rotational shaft from being discharged with refrigerant, and relative sizes, such as installation positions between the oil recovery member and components adjacent thereto, are restricted. As the oil flow is guided through a passage defined between the oil recovery member and the adjacent components, the oil may be efficiently recovered, so that, an oil circulation rate of a freezing cycle may be reduced and compression efficiency improved.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hae-Ok Jung, Jae-Yeol Lee, Yong-Beom Yeom
  • Patent number: 8858204
    Abstract: A vacuum pump includes a pumping stage, a rotary shaft supported by a lubricated support bearing; a lubricant deflector mounted between the lubricated support bearing and a ring seal which is mounted on the rotary shaft between the lubricant deflector and the pumping stage, a first reservoir containing a first reserve of liquid lubricant and in communication with the lubricated support bearing in a first volume, a lubricant splashing unit mounted on the rotary shaft in the first reservoir and having one end bathed in the first reserve of lubricant. A second reservoir includes a second reserve of liquid lubricant separated from the first reservoir by a separation wall having an aperture through which the first and second reserves of lubricant communicate. A lubricant return channel having one inlet facing the lubricant deflector opens into the second volume of the second reservoir above the second reserve of lubricant.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: October 14, 2014
    Assignee: Adixen Vacuum Products
    Inventor: Stephane Crochet
  • Patent number: 8821140
    Abstract: A gear pump having double-helical gears with bearing assembly seals and gear end seals which provided double seal interfaces between the pump cavity and bearing cups having disposed therein bearing assemblies for supporting pump shafts for rotation. The double seal interfaces preclude pumped fluid, particularly contaminated fluid including entrained abrasives from making contact with the bearing assemblies. An adjustable packing seal mechanism, a gear gap adjustment mechanism, a fluid pressure relief system, and pump heat exchanger features are also disclosed.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: September 2, 2014
    Inventors: Dan Paval, Ivan Polancec
  • Patent number: 8820082
    Abstract: A screw expander system has a condenser positioned for receiving a mixture of oil and operating medium from a screw expander. A pump pressure-feeds the mixture from the condenser to an evaporator where the operating medium is evaporated. An oil separating tank separates the mixture from the evaporator into the gaseous operating medium and the oil, and the operating medium is returned to the screw expander via a throttle mechanism. The oil can thereby be supplied to the screw expander without providing a separate oil pump, as a result of which the screw expander system is compact.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: September 2, 2014
    Assignee: Kobe Steel, Ltd.
    Inventor: Shoji Yoshimura
  • Patent number: 8814546
    Abstract: A compressor is provided in which a rotary member is suspended on a stationary member and rotates to compress a refrigerant. In the stationary member, top and bottom ends of a stationary shaft are fixed to improve structural stability and assembly properties. Bearing covers are provided on a contact portion of the stationary member and the rotary member, such that the rotary member may rotate when suspended on the stationary member, which stabilizes operation. In the rotary member, a vane is integrally formed with a roller and mounted on a vane mounting hole of a cylinder-type rotor. Although, the rotary member is provided on an outer circumferential surface of the stationary member, suction and discharge operations of the refrigerant are performed in an axial direction, which lowers product height. Oil stored in a hermetic container is supplied to a lubrication passage provided between the stationary member and the rotary member.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: August 26, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kang-Wook Lee, Bum-Dong Sa, Se-Seok Seol, Seoung-Min Kang, Jin-Ung Shin
  • Publication number: 20140199199
    Abstract: A gas pump including a delivery chamber with an inlet and an outlet for a gas; a first housing part with a first sealing surface which at least partially surrounds the delivery chamber; a second housing part with a second sealing surface which at least partially surrounds the delivery chamber, wherein the second housing part together with the first housing part at least partially encloses the delivery chamber; a delivery device which can be moved within the delivery chamber, for delivering the gas; and a pressing device which presses one of the housing parts against the other with a pressing force, such that the sealing surfaces abut each other and together form a sealing join which at least partially surrounds the delivery chamber, in order to seal off the delivery chamber, wherein the second housing part can be moved relative to the first housing part, against the pressing force, in order to be able to widen the sealing join to form a relieving gap through which liquid situated in the delivery chamber can e
    Type: Application
    Filed: January 9, 2014
    Publication date: July 17, 2014
    Applicant: Schwäbische Hüttenwerke Automotive GmbH
    Inventor: Uwe Meinig
  • Publication number: 20140170010
    Abstract: The present invention relates to a vane rotary compressor in which, while a rotor is rotating, the volume of a compressing chamber is reduced and a fluid such as a refrigerant is compressed. The vane rotary compressor according to one embodiment of the present invention is provided with the compressing chamber, the inner circumferential surface of which is formed in the shape of an involute curve, wherein the rotor is hinge-coupled with a plurality of cantilever vanes such that compression efficiency is high and noise is prevented from occurring during the operation of the compressor.
    Type: Application
    Filed: July 20, 2012
    Publication date: June 19, 2014
    Applicant: Halla Visteon Climate Control Corp.
    Inventors: Jung Myung Kwak, Seon Joo Hong, Kweon Soo Lim, In Cheol Shin
  • 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
  • Publication number: 20140161645
    Abstract: A gas pump including a first housing part (1) comprising a sealing surface (6); a second housing part (2) comprising a sealing surface (7); a delivery chamber (3) comprising an inlet (4) and an outlet (5) for a gas; and a delivery device (11, 12), which can be moved within the delivery chamber (3), for delivering the gas, wherein the housing parts (1, 2) are joined to each other such that they at least partially enclose the delivery chamber (3) over a circumference of the chamber, and such that their sealing surfaces (6, 7) abut each other in order to seal off the delivery chamber (3), and wherein a sealing recess (9) extends in at least one of the sealing surfaces (6, 7) around the delivery chamber (3) and is filled with a sealing liquid when the gas pump is in operation.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 12, 2014
    Applicant: SCHWÄBISCHE HÜTTENWERKE AUTOMOTIVE GMBH
    Inventors: Jürgen Bohner, Sven Peters
  • Publication number: 20140127067
    Abstract: In order to improve a screw compressor comprising a screw compressor housing having a screw rotor housing, screw rotor bores arranged in the screw rotor housing, screw rotors arranged in the screw rotor bores and mounted in the screw rotor housing for rotation about rotational axes, a drive for the screw rotors, and a slider which is guided for displacement in a slider receptacle in the screw rotor housing and is, in areas, in adjacent relation to the screw rotors with end faces, for adjusting a volume ratio of the screw compressor and which, starting from an insertion space of the slider receptacle, extends in a direction towards the high-pressure outlet in a guide trough of the slider receptacle that is open towards the screw rotor bores and which is capable of being positioned in a first position and a second position, wherein the volume ratio of the screw compressor is greater in one of the positions than in the other of the positions, in such a manner that it requires as small an installation space as po
    Type: Application
    Filed: January 9, 2014
    Publication date: May 8, 2014
    Applicant: Bitzer Kuehlmaschinenbau GmbH
    Inventor: Dominic Kienzle
  • Publication number: 20140093412
    Abstract: Combined booster and primary pump arrangements can be bulky and require separate supplies of purge gas and cooling water. In order to overcome this problem invention provides a vacuum pump in which two or more pumping mechanisms, i.e. the booster pump and main pump, are housed in the same stator. The invention further provides a vacuum pump stator comprising at least two operatively interconnected cavities, wherein at least two of the cavities each comprise at least one rotor-receiving portion shaped to receive two or more at least partially intermeshing rotors, and wherein an axis of a rotor-receiving portion of a first one of the cavities is offset with respect to an axis of a rotor-receiving portion of a second one of the cavities.
    Type: Application
    Filed: March 25, 2013
    Publication date: April 3, 2014
    Applicant: Edwards Limited
    Inventor: Ian David Stones
  • Publication number: 20140037484
    Abstract: A method of operating a refrigeration system having at least three compressors, in which each compressor has an oil sump with oil at an oil level. The method includes separately connecting the oil sumps of the at least three compressors. Each separate connection allows oil flow only between the oil sumps of two of said compressors thereby preventing bypass flow. The method further includes flowing oil between oil sumps of the at least three compressors and along the separate connections to tend to equalize the oil levels among the oil sumps of the at least three compressors.
    Type: Application
    Filed: July 25, 2013
    Publication date: February 6, 2014
    Applicant: BITZER KUEHLMASCHINENBAU GMBH
    Inventors: Bruce A. Fraser, James William Bush
  • Patent number: 8597005
    Abstract: A compressor incorporated with an oil separator having a separation chamber, which is placed adjacent to a discharge chamber, has a space formed in the entire inside of the separation chamber, separates oil-containing gas, being introduced, into gas and oil by centrifugal separation, allows the separated oil to drop downward, and upwardly extracts the separated gas, and also having a lower hole for introducing the separated oil into an oil storing chamber. The oil separator is formed as a joining structure of two compressor forming members, and a portion of the oil storing chamber, other than a portion where the lower hole is opened, is communicated with the separation chamber via a gas release passageway at least a part of which is formed between the two compressor forming members.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: December 3, 2013
    Assignee: Sanden Corporation
    Inventors: Tatsuki Nomura, Goushi Iketaka
  • Publication number: 20130294950
    Abstract: An on board inert gas generation system receives cabin air, or air from another relatively low pressure source, passing a portion thereof through an energy recovery turbine to ambient to extract power which is used to provide all, or part of the energy required to drive a positive displacement compressor to co press another portion of cabin air to increase the pressure thereof to be suitable for supply to an air separation module.
    Type: Application
    Filed: November 29, 2011
    Publication date: November 7, 2013
    Applicant: EATON AEROSPACE LIMITED
    Inventor: Alan Massey
  • Patent number: 8540500
    Abstract: A high capacity lightweight compact vane motor or pump system which utilizes vanes with extensions to improve efficiency of the system overall. The present invention generally includes a rotor housing, a rotor, a housing cover. The rotor housing will generally include a central opening in which the rotor is positioned. The rotor will generally include a plurality of radially spaced vane slots. A rotor vane will generally be positioned within each vane slot. Each rotor vane will generally include a first extension and a second extension, wherein the first extension extends into slidable engagement with a groove on the housing cover and the second extension extends into slidable engagement with a groove on the interior surface of the rotor housing. As the rotor is rotated within the housing, the vanes will slide into and out of the slots to create voids to hold oil to be expelled at the outlet.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: September 24, 2013
    Inventor: Carl E. Balkus, Jr.
  • Patent number: 8528518
    Abstract: The invention relates to a rotary piston engine, in particular a rotary engine of trochoidal design, with a side disk (4) on the exhaust side and a rotary piston (6) with at least of one, and preferably three, through-flow openings (6) through which the mixture can flow axially, wherein the side disk (4) on the exhaust side has a side exhaust port (43) and the at least of one through-flow opening (60) has an asymmetric internal contour (600) at least on its exhaust side, so that when the rotary piston (6) passes over the side exhaust port (43) the said side exhaust port (43) is not in fluid communication with an internal area of the through-flow opening (60). The invention further relates to a rotary piston (6) for a rotary piston engine.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: September 10, 2013
    Assignee: Wankel Supertec GmbH
    Inventor: Dankwart Eiermann
  • Patent number: 8454334
    Abstract: A compressor system includes a lubricant reservoir, a screw compressor, and a valve. The screw compressor includes a housing defining a compression chamber having a suction port, a discharge port, a first lubricant feed port located between the suction port and the discharge port, and a second lubricant feed port located between the discharge port and the first lubricant feed port. The valve is in fluid communication with the lubricant reservoir, the first lubricant feed port via a first lubricant feed passageway, and the second lubricant feed port via a second lubricant feed passageway. The valve is movable between a first position and a second position. In the first position, the valve fluidly connects the lubricant reservoir to the first lubricant feed passageway to direct lubricant to the first lubricant feed port. In the second position, the valve fluidly connects the lubricant reservoir to the second lubricant feed passageway to direct lubricant to the second lubricant feed port.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: June 4, 2013
    Assignee: Trane International Inc.
    Inventors: Joseph Heger, Robert Mayfield
  • Publication number: 20130136643
    Abstract: Provided are a structure of arranging a compressor main body and a compressor driving motor at a bottom of a package; including a duct on a top side thereof; arranging an inter cooler on a left side surface of the duct; arranging an after cooler on a top surface thereof; arranging an oil cooler on a front surface thereof; arranging a cooling fan inside of the duct; providing an exhaust port on a bottom surface of the duct; and respectively providing exhaust ducts connected to a top surface of the package on downstream sides of the coolers, and a structure of cooling air suctioned by the cooling fan from the suction port to the inside of the duct, passing through the coolers, and discharged upwardly from the package via the exhaust duct, implementing a compact oil free screw compressor with low noise capable of reducing an installation area.
    Type: Application
    Filed: June 20, 2012
    Publication date: May 30, 2013
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Toshiaki YABE, Natsuki KAWABATA, Masakatsu OKAYA, Kohei SAKAI
  • Publication number: 20130108497
    Abstract: A screw-type compressor, in particular for use in a vehicle, wherein the screw-type compressor has an oil sump with a device for damping sloshing of oil. A screw-type compressor is made available in which the device for damping sloshing of oil is improved compared to the prior art. The device for damping sloshing of oil is a barrier device which prevents the oil from rising up a housing wall of the screw-type compressor.
    Type: Application
    Filed: April 13, 2011
    Publication date: May 2, 2013
    Applicant: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH
    Inventor: Engelbert Köck
  • Publication number: 20130101454
    Abstract: In a rotary compressor of a vane rotary type, an outer peripheral surface of an eccentric portion of a shaft on a side adjacent to a center of the shaft is located radially inwardly of an outer peripheral surface of a main shaft inserted in a main bearing and that of an auxiliary shaft inserted in an auxiliary bearing. Also, a back clearance means used in mounting a piston on the shaft is provided in each of an inner peripheral surface of the piston and the eccentric portion of the shaft. Such configurations can reduce a diameter of the eccentric portion.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 25, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Tsuyoshi Karino, Daisuke Funakoshi, Noboru Iida, Kiyoshi Sawai
  • Patent number: 8360761
    Abstract: The fixation arrangement of the present invention is applied to a compressor of the type which comprises a shell (1) inferiorly defining an oil sump (3) and housing: a crankshaft (4) journalled in a cylinder block (2) and carrying a rotor (6) formed by a stack of annular laminations; and an oil pump (10) comprising a tubular sleeve (20), which is superiorly mounted to the rotor (6) and inferiorly immersed in the oil sump (3), and a pump shaft (30). The fixation arrangement comprises at least one retention element (40) radially and axially locked around the tubular sleeve (20) and having a radially outer locking portion (41), which is seated and radially forced against a respective confronting circumferential extension (6c) defined between two consecutive annular laminations, in order to axially lock the tubular sleeve (20) to the rotor (6).
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Whirlpool S.A.
    Inventors: Fabiano Domingos Silva, Luis Fabiano Jovita, Fernando Antonio Ribas, Jr., Andrea Lopes, Fabio Henrique Klein, Emilio Rodrigues Hülse
  • Publication number: 20120219444
    Abstract: A shaft assembly includes a gear with a gear bore having a splined bore section adjacent to an oil dam. A shaft includes a first splined end section and a second splined end section, the first splined end section engageable with the splined inner diameter, the shaft having a bore with a bore diameter greater than a diameter of the oil dam, a first set of radial apertures axially inboard of the first splined end section in communication with the shaft inner bore and a second set of radial apertures axially inboard of the second splined end section in communication with the shaft inner bore that altogether provide lubrication of the splined end sections.
    Type: Application
    Filed: February 25, 2011
    Publication date: August 30, 2012
    Inventors: Satish Shantilal Shah, Michael R. Blewett, Timothy P. Walgren, Michael Moorman
  • Publication number: 20120211093
    Abstract: Pumps are disclosed that include a pump housing and at least one movable pumping element situated in the housing. The pumping element(s) are magnetically driven by magnetically coupling an external magnet driver (e.g., a stator) to a driven magnet located in the housing. A control circuit selectively operates the stator and a heat-producing element, so as to energize the heat-producing element especially in a potential freezing condition when the pump is not being otherwise operated. Thus, the fluid in the pump is prevented from freezing, and freeze-related pump damage is avoided. The heat-producing element can be the stator itself energized differently from when the stator is used for driving the pump.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 23, 2012
    Inventor: David J. Grimes
  • Publication number: 20120201709
    Abstract: A compressor has a housing which includes a compression mechanism for compressing and then discharging sucked air, and an intercooler core for cooling the discharged air and mitigating a pressure fluctuation thereof. The housing has a cylinder block integrally formed so as to include a rotor chamber which accommodates the compression mechanism, a silencing and cooling chamber which accommodates the intercooler core, and a discharge hole which provides communication between the rotor chamber and the silencing and cooling chamber.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 9, 2012
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro SUZUKI, Masato SOWA, Katsutoshi SHIROMARU
  • Patent number: 8202072
    Abstract: A lubricant-tight vane rotary vacuum pump, includes a pump stage (17) having a pump stage housing (10) with a gas inlet, compression chamber (11), and a gas outlet (51), a channel (50) connecting the compression chamber (11) with the gas outlet (51), and a groove (54) at least partially surrounding a mouth of the connecting channel (50) that opens into the gas outlet (51), so that lubricant, which is tossed out of the compression chamber, is collected in the groove (54) and re-entry of the lubricant back into the compression chamber (11) is prevented.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: June 19, 2012
    Assignee: Pfeiffer Vacuum GmbH
    Inventors: Thomas Schneider, Juergen Wagner
  • Patent number: 8192184
    Abstract: A pump, particularly to a vane-cell pump for a vacuum for brake boosters in motor vehicles or for drawing blow-by gas out of the crankcase of internal combustion engines, with a casing, a rotor and with at least one vane and a liquid cooling device, which is depicted by a simple, essentially cylindrical insertion bush for inserting inside the casing.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: June 5, 2012
    Assignee: ixetic Hueckeswagen GmbH
    Inventor: Ulrich Hiltemann
  • Patent number: 8177534
    Abstract: An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing with their corresponding shell parts by cooling fins. The cooling air channel also includes passages inside the orbiting scroll, shaft central hole and gaps inside stator slots and winding. Heat pipes are installed inside the fixed and orbiting scrolls to conduct heat from inside of the apparatus to the peripheral condenser portion of the heat pipes to be cooled by the cooling air.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: May 15, 2012
    Assignee: Advanced Scroll Technologies (HangZhou), Inc.
    Inventor: Shimao Ni
  • Publication number: 20110311384
    Abstract: A sealed compressor is provided with a spray lubricant that will provide lubricant at various bearing surfaces during initial start-up of the compressor. The lubricant will wear away quickly after initial run-in, but liquid lubricant will be provided by that time.
    Type: Application
    Filed: April 1, 2008
    Publication date: December 22, 2011
    Inventors: Pierre Ginies, Gael Meldener, Olivier Paillon
  • Publication number: 20110268598
    Abstract: A gear pump having double-helical gears with bearing assembly seals and gear end seals which provided double seal interfaces between the pump cavity and bearing cups having disposed therein bearing assemblies for supporting pump shafts for rotation. The double seal interfaces preclude pumped fluid, particularly contaminated fluid including entrained abrasives from making contact with the bearing assemblies. An adjustable packing seal mechanism, a gear gap adjustment mechanism, a fluid pressure relief system, and pump heat exchanger features are also disclosed.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 3, 2011
    Inventors: DAN PAVAL, IVAN POLANCEC
  • Patent number: 8007263
    Abstract: A water-lubricated compressor has a discharge on-off valve in a discharge channel located between a discharge port of a compressor body and a water separating/recovering unit. A water circulation on-off valve is disposed in a water circulation channel located between a water cooler and a water supply portion in the compressor body. A gas release channel provides communication between a gas phase portion of the water separating/recovering unit and the exterior of the water separating/recovering unit. A gas release on-off valve is disposed in the gas release channel. When the compressor body is not in operation, the discharge on-off valve and the water circulation on-off valve are closed and the gas release on-off valve is opened, allowing water to be recovered to the water separating/recovering unit. When there is no demand for compressed gas, it is possible to remove water from the water cooler, which otherwise may be damaged.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 30, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Shoji Yoshimura, Akinori Tamura
  • Patent number: 7988435
    Abstract: An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a plate type heat-exchanger, and the amount of cooling water for the plate type heat-exchanger being adjustable. With this configuration, a difference between a temperature during load operation and a temperature upon automatic stopping and during unload operation of the compressor can be reduced, so that the cooling unit can be restrained from being damaged or broken within a short period, thereby it is possible to provide a highly reliable oilless screw compressor.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: August 2, 2011
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hideki Fujimoto, Hitoshi Nishimura, Natsuki Kawabata
  • Publication number: 20100329914
    Abstract: A compressor is configured to compress a refrigerant and use a lubricating oil. The compressor includes a compression mechanism configured to compress the refrigerant, a driving shaft configured to rotate about a rotation axis in order to drive the compression mechanism, a slide bearing slidably supporting the driving shaft, a first surface fixed to the driving shaft and intersecting with a line arranged in parallel to the rotation axis, a second surface facially abutted to the first surface, and a recovery space formed in the compressor. The recovery space is configured and arranged to recover the lubricating oil leaking out of bottom ends of sliding surfaces of the slide bearing and the driving shaft. The first surface and the second surface respectively continue to surfaces forming the recovery space.
    Type: Application
    Filed: February 27, 2009
    Publication date: December 30, 2010
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masahiro Yamada, Kazuhiko Matsukawa, Hiroyuki Yamaji, Satoshi Yamamoto, Yasuhiro Murakami, Tomoko Mizuguchi
  • Patent number: 7819646
    Abstract: A pump having a rotor, a stator, a housing enclosing the rotor and the stator, the housing having an inlet for a fluid, and a port for receiving a fluid which acts on deposits on a surface of the rotor and on a surface of the stator positioned downstream from the inlet.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: October 26, 2010
    Assignee: Edwards Limited
    Inventors: Mark Christopher Hope, Clive Marcus Lloyd Tunna, Frederick John Underwood
  • Publication number: 20100247361
    Abstract: A compressor is provided with a substantially cylindrical housing. Inside the housing is a motor housing having a substantially cylindrical shape and a compressor housing having a substantially cylindrical shape. The motor housing and the compressor housing are connected or fit into the housing with a frictional connection to prevent axial movement of the motor housing and the compressor housing.
    Type: Application
    Filed: March 26, 2010
    Publication date: September 30, 2010
    Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
    Inventors: Paul NEMIT, JR., Angela Marie COMSTOCK