Heat Exchange Or Non-working Fluid Lubricating Or Sealing Patents (Class 418/83)
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Patent number: 12180838Abstract: A rotor housing for an aircraft rotary engine includes a side housing body and a rail. The side housing body extends along an axis between and to an inner side and an outer side. The side housing body forms a fluid cooling passage and a plurality of ribs. The fluid cooling passage extends about the axis at the inner side. The plurality of ribs are coincident with and extend into the fluid cooling passage. The plurality of ribs are distributed about the fluid cooling passage as an array of ribs. The rail is disposed at the plurality of ribs. The rail extends about the fluid cooling passage. The side housing body and the rail form a plurality of fluid cooling channels connected in fluid communication with the fluid cooling passage.Type: GrantFiled: April 7, 2023Date of Patent: December 31, 2024Assignee: Pratt & Whitney Canada Corp.Inventors: Jérémie Barberger, Michel Bousquet
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Patent number: 12163430Abstract: Systems and methods for a partial state condenser are described. In one embodiment, the partial state condenser receives a working fluid, and includes a sense reservoir that holds the working fluid, a reservoir sensor that senses an electrical property of the working fluid, and a reservoir valve that is in fluid communication with the sense reservoir. The partial state condenser yet further includes a processor configured to execute instructions to determine a specific energy of the working fluid based on the electrical property of the working fluid. The processor is also configured to execute instructions to control the reservoir valve to regulate a flow of a portion of the working fluid from the sense reservoir based on the specific energy of the working fluid to maintain a two-phase saturation state associated with a saturation point within the partial state condenser based on the electrical property.Type: GrantFiled: September 14, 2023Date of Patent: December 10, 2024Assignee: ARGYLE EARTH, INC.Inventor: Christopher McMillan
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Patent number: 12117173Abstract: An assembly is provided for a powerplant. This assembly includes a housing, a primary fuel injector and an ignition system. The housing forms a combustion volume within the housing. The primary fuel injector is configured to inject primary fuel into the combustion volume. The ignition system is configured to ignite the primary fuel within the combustion volume. The ignition system includes a pilot fuel injector, a pilot ignitor, a pilot chamber, a first component and a second component. The pilot fuel injector is configured to inject pilot fuel into the pilot chamber. The pilot ignitor is configured to ignite the pilot fuel within the pilot chamber. The pilot chamber is fluidly coupled with the combustion volume through an aperture in the first component. The pilot chamber is formed by and disposed between the first component and the second component. The first component is configured from or otherwise include a ceramic.Type: GrantFiled: April 17, 2023Date of Patent: October 15, 2024Assignee: Pratt & Whitney Canada Corp.Inventors: Jean-Gabriel Gauvreau, Johnny Vinski
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Patent number: 12117001Abstract: The present disclosure is directed to a screw compressor system having a compressor housing with a pair of screw rotors rotatably supported within a compression chamber. Lubricant is injected into a compression chamber at a first volume ratio and at a second volume ratio greater than the first volume ratio to increase the sealing and lubrication between the screw rotors and rotor bores in the compressor housing as well as to increase heat transfer from a compressed working fluid in the compression chamber.Type: GrantFiled: July 5, 2023Date of Patent: October 15, 2024Assignee: Ingersoll-Rand Industrial U.S., Inc.Inventors: Daniel R. Crum, Ryan Patrick Coleman, Nobin Cherian
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Patent number: 12117000Abstract: An orbiting scroll of a scroll compressor includes a platter wall having a first face including a spiral structure projecting therefrom, a second face having a coupling structure configured to couple the orbiting scroll to a drive mechanism of the scroll compressor, and a circumferential surface connecting the first face to the second face in an axial direction of the platter wall. The orbiting scroll includes a mass reduction feature provided as an inwardly indented channel formed in the circumferential surface. The channel is further configured to form a retaining feature for retaining a rim of a mask during a process of coating the spiral structure of the first face with a surface coating.Type: GrantFiled: May 15, 2023Date of Patent: October 15, 2024Assignee: HANON SYSTEMSInventors: Steven Koester, Rance Stehouwer, Armando Nelson Pedro da Silva, Susana Isabel Nobre Salvador
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Patent number: 11686311Abstract: A fluid pump includes a pump head and a motor coupled by a drive shaft. The pump head includes a pump inlet, a pump outlet, and a pumping stage in which a movable pump element is driven by the drive shaft. The motor includes a motor rotor and a motor stator. A connector couples the motor rotor and the drive shaft. The connector includes a plate rotatable with the drive shaft, fan blades attached to the plate for establishing a flow of air for cooling the motor, and one or more counterweights attached to the plate for reducing or eliminating imbalance created by certain forces generated by the pump during operation.Type: GrantFiled: June 7, 2022Date of Patent: June 27, 2023Assignee: Agilent Technologies, IncInventors: Vannie Lu, George Galica, Aileen Cheang
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Patent number: 11674409Abstract: A method of assembling a turbocharger having a vaned turbine nozzle includes first forming a sub-assembly of a center housing, shaft, bearings, compressor wheel, turbine wheel, and vane assembly. The vane assembly is held captive in attachment to the center housing by an annular heat shield that includes prongs or the like at its inner and outer peripheries for respectively engaging a first catch formed on the center housing and a second catch formed on the nozzle ring of the vane assembly. The heat shield forms a snap fit to the center housing and nozzle ring, thereby connecting the cartridge to the center housing. The whole sub-assembly is then joined to the turbine housing, in the process axially compressing the heat shield and a spring shroud for exerting an axial biasing force on the nozzle ring.Type: GrantFiled: March 31, 2021Date of Patent: June 13, 2023Assignee: Garrett Transportation I Inc.Inventors: Stanislav Hahn, Jan Kohoutek, Jakub Kriz, Antonin Forbelsky
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Patent number: 11655815Abstract: A semi-rigid stator is provided for a helical gear device. The stator includes a stack of rigid rings, a deformable layer, and a rigid housing. Each of the rigid rings has a central opening and an exterior surface. The rigid rings are aligned along a common centerline and rotated slightly relative to each other such that the stack of rigid rings forms a helically convoluted chamber. Each of the rigid rings is secured within the rigid stator housing by the deformable layer disposed between the exterior surface of each of the rigid rings and the rigid housing. The deformable layer bonds the rigid rings together as the ring stack and permits movement of the rigid rings relative to each other.Type: GrantFiled: December 14, 2020Date of Patent: May 23, 2023Assignee: ROPER PUMP COMPANY, LLCInventors: Trevor Mark Brasselle, Brian Lee Gerdes, Gregory Richard Ferguson, Cody Richard Reynolds
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Patent number: 11629712Abstract: The present disclosure describes a rotary pulsation generator having a simple structure capable of transferring fluid while implementing low noise and low vibration and having high flow of fluid and high pressure suction and discharge functions. According to the present disclosure, fluid is transferred by adjusting a width and interval of pulsation while reducing vibration caused by eccentric rotation of a rotor.Type: GrantFiled: May 28, 2021Date of Patent: April 18, 2023Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Yongkwon Koh, Jangsoon Kwon, Kyuseok Song, Kijong Jang, Bongju Kim
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Patent number: 11255315Abstract: Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.Type: GrantFiled: July 2, 2021Date of Patent: February 22, 2022Assignee: ICE Thermal Harvesting, LLCInventors: Adrian Benjamin Bodishbaugh, Carrie Jeanne Murtland
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Patent number: 11236735Abstract: Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.Type: GrantFiled: July 2, 2021Date of Patent: February 1, 2022Assignee: ICE Thermal Harvesting, LLCInventors: Adrian Benjamin Bodishbaugh, Carrie Jeanne Murtland
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Patent number: 10718334Abstract: 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: GrantFiled: December 16, 2016Date of Patent: July 21, 2020Assignee: Ingersoll-Rand Industrial U.S., Inc.Inventors: Sven Herlemann, Jan Hauser, Michael Beinert, Philipp Schulze-Beckinghausen
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Patent number: 10539351Abstract: 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: GrantFiled: February 7, 2017Date of Patent: January 21, 2020Assignee: Emerson Climate Technologies, Inc.Inventors: Kirill M. Ignatiev, Robert C. Stover, Michael M. Perevozchikov
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Patent number: 10495090Abstract: 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: GrantFiled: August 27, 2015Date of Patent: December 3, 2019Assignee: Ingersoll-Rand CompanyInventors: James Christopher Collins, Willie Dwayne Valentine, Stephen James Collins
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Patent number: 9879568Abstract: 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: GrantFiled: July 1, 2014Date of Patent: January 30, 2018Assignee: P.T.I.Inventor: Petrus Carolus Van Beveren
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Patent number: 9803900Abstract: 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: GrantFiled: October 19, 2016Date of Patent: October 31, 2017Assignee: Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) LimitedInventors: Ryuichiro Yonemoto, Yasuaki Iizuka, Eisuke Kato, Shu Kuriyama, Masahiro Takebayashi
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Patent number: 9435204Abstract: 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: GrantFiled: March 21, 2011Date of Patent: September 6, 2016Assignee: United Technologies CorporationInventor: Mark David Horn
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Patent number: 9347448Abstract: 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: GrantFiled: April 13, 2011Date of Patent: May 24, 2016Assignee: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBHInventors: Engelbert Köck, Michael Hofstetter
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Patent number: 9328731Abstract: 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: GrantFiled: June 20, 2012Date of Patent: May 3, 2016Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Toshiaki Yabe, Natsuki Kawabata, Masakatsu Okaya, Kohei Sakai
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Patent number: 9028230Abstract: 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: GrantFiled: July 30, 2013Date of Patent: May 12, 2015Assignee: Air Squared, Inc.Inventor: Robert W. Shaffer
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Patent number: 8920538Abstract: 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: GrantFiled: May 10, 2012Date of Patent: December 30, 2014Assignee: Linde AktiengesellschaftInventors: Robert Adler, Sascha Dorner, Georg Siebert, Martin Stehrlein
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Patent number: 8915725Abstract: 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: GrantFiled: December 28, 2011Date of Patent: December 23, 2014Assignee: LG Electronics Inc.Inventors: Kangwook Lee, Bumdong Sa
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Patent number: 8899351Abstract: 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: GrantFiled: July 16, 2012Date of Patent: December 2, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Richard Thomas Hay, Robello Samuel
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Publication number: 20140334960Abstract: 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: ApplicationFiled: August 15, 2012Publication date: November 13, 2014Applicant: WABCO AUTOMOTIVE UK LIMITEDInventors: David Heaps, Simon Warner, John Hegarty
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Patent number: 8882482Abstract: 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: GrantFiled: July 25, 2012Date of Patent: November 11, 2014Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Tsubasa Mitsui, Shinichi Sato, Kazuo Kobayashi, Akio Saiki, Akihiro Nakashima, Shinsuke Asou
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Publication number: 20140314607Abstract: 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: ApplicationFiled: March 21, 2014Publication date: October 23, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hideaki MAEYAMA, Koichi SATO
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Publication number: 20140314606Abstract: 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: ApplicationFiled: March 21, 2014Publication date: October 23, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hideaki MAEYAMA, Koichi SATO
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Patent number: 8864480Abstract: 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: GrantFiled: July 27, 2009Date of Patent: October 21, 2014Assignee: LG Electronics Inc.Inventors: Hae-Ok Jung, Jae-Yeol Lee, Yong-Beom Yeom
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Patent number: 8858204Abstract: 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: GrantFiled: June 27, 2011Date of Patent: October 14, 2014Assignee: Adixen Vacuum ProductsInventor: Stephane Crochet
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Patent number: 8821140Abstract: 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: GrantFiled: April 29, 2010Date of Patent: September 2, 2014Inventors: Dan Paval, Ivan Polancec
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Patent number: 8820082Abstract: 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: GrantFiled: December 13, 2010Date of Patent: September 2, 2014Assignee: Kobe Steel, Ltd.Inventor: Shoji Yoshimura
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Patent number: 8814546Abstract: 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: GrantFiled: December 2, 2009Date of Patent: August 26, 2014Assignee: LG Electronics Inc.Inventors: Kang-Wook Lee, Bum-Dong Sa, Se-Seok Seol, Seoung-Min Kang, Jin-Ung Shin
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Publication number: 20140199199Abstract: 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 eType: ApplicationFiled: January 9, 2014Publication date: July 17, 2014Applicant: Schwäbische Hüttenwerke Automotive GmbHInventor: Uwe Meinig
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Publication number: 20140170010Abstract: 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: ApplicationFiled: July 20, 2012Publication date: June 19, 2014Applicant: Halla Visteon Climate Control Corp.Inventors: Jung Myung Kwak, Seon Joo Hong, Kweon Soo Lim, In Cheol Shin
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Patent number: 8753098Abstract: 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: GrantFiled: June 26, 2009Date of Patent: June 17, 2014Assignee: Mitsubishi Electric CorporationInventors: Tetsuhide Yokoyama, Toshihide Koda, Teruhiko Nishiki, Hideaki Maeyama, Taro Kato, Keisuke Shingu, Takuho Hirahara, Shin Sekiya
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Publication number: 20140161645Abstract: 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: ApplicationFiled: December 10, 2013Publication date: June 12, 2014Applicant: SCHWÄBISCHE HÜTTENWERKE AUTOMOTIVE GMBHInventors: Jürgen Bohner, Sven Peters
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Publication number: 20140127067Abstract: 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 poType: ApplicationFiled: January 9, 2014Publication date: May 8, 2014Applicant: Bitzer Kuehlmaschinenbau GmbHInventor: Dominic Kienzle
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Publication number: 20140093412Abstract: 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: ApplicationFiled: March 25, 2013Publication date: April 3, 2014Applicant: Edwards LimitedInventor: Ian David Stones
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Publication number: 20140037484Abstract: 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: ApplicationFiled: July 25, 2013Publication date: February 6, 2014Applicant: BITZER KUEHLMASCHINENBAU GMBHInventors: Bruce A. Fraser, James William Bush
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Patent number: 8597005Abstract: 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: GrantFiled: February 13, 2008Date of Patent: December 3, 2013Assignee: Sanden CorporationInventors: Tatsuki Nomura, Goushi Iketaka
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Publication number: 20130294950Abstract: 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: ApplicationFiled: November 29, 2011Publication date: November 7, 2013Applicant: EATON AEROSPACE LIMITEDInventor: Alan Massey
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Patent number: 8540500Abstract: 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: GrantFiled: May 8, 2012Date of Patent: September 24, 2013Inventor: Carl E. Balkus, Jr.
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Patent number: 8528518Abstract: 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: GrantFiled: May 18, 2010Date of Patent: September 10, 2013Assignee: Wankel Supertec GmbHInventor: Dankwart Eiermann
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Patent number: 8454334Abstract: 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: GrantFiled: February 10, 2011Date of Patent: June 4, 2013Assignee: Trane International Inc.Inventors: Joseph Heger, Robert Mayfield
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Publication number: 20130136643Abstract: 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: ApplicationFiled: June 20, 2012Publication date: May 30, 2013Applicant: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Toshiaki YABE, Natsuki KAWABATA, Masakatsu OKAYA, Kohei SAKAI
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Publication number: 20130108497Abstract: 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: ApplicationFiled: April 13, 2011Publication date: May 2, 2013Applicant: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBHInventor: Engelbert Köck
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Publication number: 20130101454Abstract: 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: ApplicationFiled: June 29, 2011Publication date: April 25, 2013Applicant: PANASONIC CORPORATIONInventors: Tsuyoshi Karino, Daisuke Funakoshi, Noboru Iida, Kiyoshi Sawai
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Patent number: 8360761Abstract: 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: GrantFiled: October 29, 2008Date of Patent: January 29, 2013Assignee: Whirlpool S.A.Inventors: Fabiano Domingos Silva, Luis Fabiano Jovita, Fernando Antonio Ribas, Jr., Andrea Lopes, Fabio Henrique Klein, Emilio Rodrigues Hülse
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Publication number: 20120219444Abstract: 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: ApplicationFiled: February 25, 2011Publication date: August 30, 2012Inventors: Satish Shantilal Shah, Michael R. Blewett, Timothy P. Walgren, Michael Moorman
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Publication number: 20120211093Abstract: 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: ApplicationFiled: February 22, 2012Publication date: August 23, 2012Inventor: David J. Grimes