Recirculated Through Pump Patents (Class 417/370)
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Patent number: 11971339Abstract: A particle size distribution measurement device includes a cell holding body 31 that holds a measurement cell 2 containing a measurement sample and a dispersion medium and a reference cell 6 containing a reference sample and is rotated by a motor 322, and a cell discrimination mechanism 7 that discriminates the cells 2, 6 passing through a predetermined rotation position by using a magnetic force or electrostatic capacitance.Type: GrantFiled: October 29, 2019Date of Patent: April 30, 2024Assignees: Horiba, Ltd., Eppendorf Himac Technologies Co., Ltd.Inventors: Tetsuji Yamaguchi, Hitoshi Watanabe, Hidetaka Osawa, Ken Asakura, Kenichi Nemoto
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Patent number: 11946476Abstract: The present disclosure provides a compressor rotor, a compressor and a refrigerant circulation system. The compressor rotor includes: a motor rotor including a plurality of rotor sections, a locking rod, a compression unit rotating part and a locking member. The rotor sections are fixedly connected in an axial direction and are provided with an axial through hole and the locking rod penetrates through the axial through hole. The compression unit rotating part is located at the end part of the motor rotor and is connected to the locking rod. The locking member is configured to lock the compression unit rotating part on the locking rod. The locking rod, the compression unit rotating part and the locking member form a pressing structure which applies a pressure toward an axial inner side to the motor rotor.Type: GrantFiled: October 23, 2019Date of Patent: April 2, 2024Assignee: Gree Electric Appliances, Inc. of ZhuhaiInventors: Hua Liu, Zhiping Zhang, Yuhui Chen, Ruixing Zhong, Hongbo Li, Wenteng Ye, Jingli Qi
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Patent number: 11898574Abstract: An electric pump for moving a liquid having an electric motor contained in a shell enclosed by a monolithically provided containment jacket. The pump includes a mechanical section having an assembly for moving liquid via impellers and diffusers, an electromechanical section, which includes an electric motor in a shell that includes a rotor and a stator and first and second covers at the ends of the containment jacket having an intake port and a delivery port which are fluidically connected to the mechanical section.Type: GrantFiled: March 9, 2021Date of Patent: February 13, 2024Assignee: DAB PUMPS S.P.A.Inventors: Francesco Sinico, Pietro Cailotto, Michele Cappocchin, Mattia Casagrande, Luca Calore
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Patent number: 11480194Abstract: A turbo compressor comprises a rotary shaft including a rotor; a first impeller coupled to one side of the rotary shaft, a thrust bearing runner coupled between the first impeller and the rotary shaft, an impeller sleeve compressed and coupled between the first impeller and the thrust bearing runner, a second impeller coupled to the other side of the rotary shaft, and a tie rod passing through the first impeller and a thrust bearing and fastened to the rotary shaft.Type: GrantFiled: April 24, 2019Date of Patent: October 25, 2022Assignee: LG ELECTRONICS INC.Inventors: Jun Chul Oh, Kyungmin Kim, Seheon Choi
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Patent number: 11387009Abstract: One or more embodiments of the present invention relate to a pump/heat exchanger assembly of a nuclear reactor, in particular a liquid metal cooled nuclear reactor, the pump being characterized in that the shaft for driving the impeller is inserted in an shell inside the heat exchanger and has a smaller cross section at the bottom part of the tube bundle of the heat exchanger and a cross section that gradually increases up to a widest cross section at the top part of the tube bundle of the heat exchanger. The resulting axial profile of the impeller's shaft is, at the same time, designed to uniformly distribute the flow of the primary fluid inside the tube bundle of the heat exchanger and to provide high mechanical inertia to the pump.Type: GrantFiled: January 19, 2017Date of Patent: July 12, 2022Assignee: HYDROMINE NUCLEAR ENERGY S.A.R.L.Inventor: Luciano Cinotti
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Patent number: 11371513Abstract: An integrated gas compressor is disclosed herein. The integrated gas compressor includes an integrated motor with a stator, centrifugal impellers, and a shaft assembly with a rotor and conical transition. The integrated motor can produce an electromotive force that is imparted by the stator to rotate the rotor and components coupled to the rotor, such as the conical transition and the centrifugal impellers. At least one of the rotor and conical transition have a cavity.Type: GrantFiled: March 4, 2020Date of Patent: June 28, 2022Assignee: Solar Turbined IncorporatedInventors: Jess Lee Freeman, William Watkins
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Patent number: 11274679Abstract: A compressor operates within a system having a cooling capacity below 60 tons. The compressor includes a hermetically sealed housing and a drive module and aero module within the housing. The drive module includes a motor, a rotor, and oil free bearings. The aero module has a centrifugal impeller driven by the drive module to compress a working fluid. The compressor is arranged such that the working fluid flows through the drive module before reaching the aero module.Type: GrantFiled: February 9, 2018Date of Patent: March 15, 2022Inventor: Lin Sun
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Patent number: 11201524Abstract: A system can include a compressor outlet line configured to receive compressor outlet flow from a compressor, a bypass line in fluid communication with the compressor outlet line and a motor outlet line to divert a bypass flow of the compressor outlet flow. The system can include at least one pump in fluid communication between the bypass line and the motor outlet line such that the bypass flow at least partially drives the pump to pull cooling flow through a motor to cool the motor.Type: GrantFiled: June 26, 2019Date of Patent: December 14, 2021Assignee: Hamilton Sundstrand CorporationInventors: Debabrata Pal, John H. Paliulis, Christina W. Millot
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Patent number: 11190083Abstract: Methods and systems are provided for a cooling jacket for a stator. In one example, the cooling jacket is cast as a single piece with windings of the stator pressed into a surface of the cooling jacket.Type: GrantFiled: January 22, 2019Date of Patent: November 30, 2021Assignee: Ford Global Technologies, LLCInventors: Jason Sanderson, Robert Green, James Trent
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Patent number: 11118602Abstract: A pump includes a circular housing having a thin profile, a brushless open frame motor, and a centrifugal impeller. The pump is configured to transport a fluid to transfer thermal energy to or from one or more external components.Type: GrantFiled: January 5, 2018Date of Patent: September 14, 2021Assignee: Raytheon CompanyInventor: Phillip W. Thiessen
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Patent number: 11073153Abstract: An electric pump includes: a motor; an impeller; a motor housing portion; an impeller housing portion; an introduction pipe portion; a discharge pipe portion; a printed circuit board; and an electronic part, wherein the electronic part includes first and second electronic parts mounted on a surface of the printed circuit board on a side of the motor housing portion, the second electronic part is taller than the first electronic part, the impeller housing portion includes: an upper wall portion positioned at the one side with respect to the impeller; and a peripheral wall portion positioned radially outward about a rotation axis from the upper wall portion, the first electronic part faces the upper wall portion, and the second electronic part is positioned radially outward about the rotation axis and from the peripheral wall portion.Type: GrantFiled: February 6, 2018Date of Patent: July 27, 2021Assignee: SHINANO KENSHI CO., LTD.Inventor: Takeshi Miyasaka
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Patent number: 11015618Abstract: A centrifugal compressor includes a compressor impeller attached to a rotary shaft and a housing accommodating the rotary shaft and the compressor impeller. The housing includes a suction portion formed upstream of the compressor impeller and a high pressure part formed on a rear face side of the compressor impeller and having a pressure higher than a pressure in the suction portion during rotation of the compressor impeller. The housing has a discharge passage formed for connecting the high pressure part to a low pressure part including the suction portion and a gas flow path upstream of the suction portion.Type: GrantFiled: November 16, 2017Date of Patent: May 25, 2021Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Ryosuke Yumoto, Takashi Mori
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Patent number: 10954952Abstract: In a rotary direct-drive single-stage or multi-stage centrifugal pump (1) for cryogenic liquids, having a pump housing (2) for the pump (1) and an electric drive motor unit (12) in a motor housing (10) serving as a pump drive, wherein a shaft (11) of the drive motor unit (12) is mounted on two roller bearings (20; 21), and wherein at least one roller bearing (20; 21) is an unlubricated roller bearing, the structural design of the centrifugal pump (1) should be kept as simple as possible.Type: GrantFiled: September 18, 2018Date of Patent: March 23, 2021Assignee: Fives Cryomec AGInventor: Stéphane Boeglin
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Patent number: 10859098Abstract: The present invention provides a drive device including a drive motor. The drive motor includes an end cover, a motor housing, a stator, a rotor, a motor shaft, and a bearing. The drive motor further includes a casing and a first heat-dissipating fan used for dissipating heat for the motor housing. The casing is fixedly mounted on a side of the end cover to contain the motor housing into a chamber formed by the casing. The casing and the motor housing are spaced apart at certain intervals to form a gap between the casing and the motor housing for air flow to pass through. The first heat-dissipating fan is connected to the end of the motor shaft away from the end cover to rotate with the motor shaft. The casing is provided with an air inlet and an air outlet for air flow to pass through.Type: GrantFiled: December 27, 2018Date of Patent: December 8, 2020Assignee: Zhejiang Dongxin iTechnology Co., Ltd.Inventors: Fengping Zhou, Xinjiang Zhou, Guoyao Wu, Xiaoke Zhou, Dong Chen
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Patent number: 10788051Abstract: The present invention provides an electric water pump including a drive motor. The drive motor includes a cylinder-shaped motor housing, a stator, a rotor, a motor shaft, and an end cover. The motor housing is fixedly mounted on a side of the end cover. The side of the end cover is also fixedly provided with a cylinder-shaped casing, wherein the motor housing is positioned in the casing. A central axis line of the motor housing coincides with a central axis line of the casing. Another side of the end cover is provided with a pump body having a chamber. An end of the motor shaft away from the end cover is fixedly provided with a heat-dissipating fan, an end of the casing close to the end cover is provided with a first air inlet, and a rear end away from the casing is provided with a first air outlet.Type: GrantFiled: December 27, 2018Date of Patent: September 29, 2020Assignee: Zhejiang Dongxin iTechnology Co., Ltd.Inventors: Guoyao Wu, Xiaoke Zhou, Xinjiang Zhou, Fengping Zhou, Dong Chen
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Patent number: 10763723Abstract: A motor for a driving device includes: a rotor rotatable around a central axis, a stator facing the rotor, a busbar electrically connected to the stator, a busbar support to hold the busbar, a terminal bar including a first end electrically connected to the busbar, the terminal bar including a connection terminal at a second end and that is to be electrically connected to the driving device, and a seal to be attached to the driving device and located between the busbar and the connection terminal. The seal portion includes a through-hole into which the terminal bar is press-fitted.Type: GrantFiled: July 20, 2017Date of Patent: September 1, 2020Assignees: NIDEC CORPORATION, ZF AUTOMOTIVE GERMANY GMBH, ZF AUTOMOTIVE UK LIMITEDInventors: Hiroshi Sambuichi, Nakaba Kataoka, Jochen Scherbart, Guy Healey
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Patent number: 10619628Abstract: The present invention relates to a fuel pump (1) which comprises a pump housing (2), a delivery element (3) for delivering fuel, a heat-generating actuator (4) for actuating the delivery element (3), a first fuel path (5) which leads from an inlet (20) to a delivery space (7), and a second fuel path (6) which leads from the inlet (20) past the heat-generating actuator (4) to a first housing opening (21), wherein the first housing opening (21) is arranged above the inlet (20) in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump (1) according to the invention and a fuel tank (10) in which the fuel pump (1) is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump (1).Type: GrantFiled: September 2, 2015Date of Patent: April 14, 2020Assignee: Robert Bosch GmbhInventors: Andreas Plisch, Frank Nitsche, Joerg Heyse, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Tim Reule
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Patent number: 10443438Abstract: A turbopump machine includes a housing, a shaft rotatably supported in the housing on a set of bearings, an axial pump coupled with the shaft, a circumferential discharge volute fluidly coupled with the axial pump, and a turbine coupled with the shaft. The turbine includes a blade row disposed in an axial turbine flowpath that has an axial turbine flowpath discharge that is fluidly coupled with the circumferential discharge volute. A cooling passage is disposed between the housing and the shaft about the set of bearings. The cooling passage has a cooling passage discharge that is fluidly coupled with the circumferential discharge volute. The cooling passage discharge is adjacent the axial turbine flowpath discharge. A seal isolates the cooling passage discharge from the axial turbine flowpath discharge.Type: GrantFiled: November 5, 2015Date of Patent: October 15, 2019Assignee: AEROJET ROCKETDYNE, INC.Inventors: Khin Phui, Thaddeus Chilcoat
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Patent number: 10260507Abstract: Embodiments of the invention provide a pump assembly including a pump chamber with an inlet and an outlet. The pump assembly also includes a first cup at least partially enclosing the pump chamber and including a protrusion with a central recess, and a shaft positioned within the central recess. The pump assembly further includes a substantially hemispherical rotor unit with at least one ferrous metal element molded in plastic, and an impeller coupled to the rotor unit. The rotor unit and the impeller are positioned inside the first cup and rotatable around the shaft.Type: GrantFiled: August 23, 2012Date of Patent: April 16, 2019Assignee: Moog Inc.Inventor: Ronald Flanary
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Patent number: 9909593Abstract: A method of de-watering during intermittent dry running periods with a self-priming centrifugal pump is presented. Centrifugal pumps, as opposed to diaphragm pumps, are advantageous because they are less expensive and can provide greater capacity. The shaft seals are sensitive, however, to frictional heating when water flow is interrupted. In some situations, this fractional heating may desiccate self-priming. The inventive concept provides a continuous stream of pressurized water moving through the pump to cool the seal and sustain priming capability without substantially impairing the ability of the pump to resume wet operation.Type: GrantFiled: October 1, 2012Date of Patent: March 6, 2018Inventor: David Douglas Dieziger
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Patent number: 9777739Abstract: A rotation shaft supporting structure for an electric supercharger includes a rotation shaft that supports a compressor wheel, an electric motor including a motor rotator securely installed to the rotation shaft, and a stator for applying torque to the motor rotator. The supporting structure further includes a bearing provided on a bearing side end of the rotation shaft, which is adjacent to the compressor wheel, to support the rotation shaft, and a damper unit for absorbing shaft vibration of the rotation shaft. The compressor wheel is a wheel of a supercharging side, and the damper unit is provided at a shaft end on an opposite side to the bearing side.Type: GrantFiled: October 14, 2011Date of Patent: October 3, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Noriyuki Hayashi, Yukio Yamashita, Byeongil An
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Patent number: 9660506Abstract: An electric motor includes a housing, a rotor, a stator, a storage tank, and a communication passage. The stator has a stator core provided coaxially with the rotor to surround the rotor. The storage tank is provided at a lower portion of the housing to store lubricating oil and divided by the stator core into a first storage tank and a second storage tank. The communication passage is provided to communicate the first storage tank with the second storage tank. The communication passage, as seen in an axial direction, extends above an oil level of the lubricating oil stored in the first storage tank and the second storage tank such that an air flows between an upper portion of the first storage tank and an upper portion of the second storage tank.Type: GrantFiled: May 13, 2014Date of Patent: May 23, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Yusuke Yoshiizumi, Junya Tachikawa, Manabu Sakurada
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Patent number: 9611852Abstract: The main sources of heat in a scroll pump are cooled efficiently by a single cooling fan so that noise and, in particular, fan-generated noise, can be kept low. The scroll pump includes a pump head assembly, a pump motor, a cooling fan that produces a cooling air flow in the pump, a cowling in which the pump head assembly, pump motor and cooling fan are housed and juxtaposed with one another in an axial direction of the pump, and a shroud disposed within the cowling and extending around the pump motor to define a tunnel with the motor and through which the air flow of the cooling fan is directed.Type: GrantFiled: March 29, 2013Date of Patent: April 4, 2017Assignee: Agilent Technology, Inc.Inventors: Ronald J. Forni, Scott Driscoll, George Galica
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Patent number: 9260186Abstract: A rotor system for a reactive drive rotary wing maintains the rigidity of the rotor and eliminates play between flight controls and the rotor by mounting swashplate actuators to a flange rigidly secured to the mast. Apparatus and methods perform thermal management of the rotor in order to avoid bearing failure or loss of bearing preload. Methods include modulating the temperature of oil pumped over one or more of the mast bearing, swashplate bearing, and spindle bearing. The temperature of air passively or actively drawn through rotor may also be modulated to maintain bearing temperature within a predetermined range. The rotor includes structures for reducing pressure losses and drag on components due to air flow through the rotor. A rotor facilitates thermal management by oil and air flow.Type: GrantFiled: September 7, 2011Date of Patent: February 16, 2016Assignee: GROEN BROTHERS AVIATION, INC.Inventor: Jacob Johannes van der Westhuizen
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Patent number: 9186954Abstract: A blower unit has a scroll casing having a first intake port and a second intake port; a first fan drawing air flowing from the first intake port; a second fan coaxially arranged with the first fan and drawing air flowing from the second intake port; a fan motor having a main body and a rotation shaft driven by the main body; and a blower cover arranged to face and cover one of the first intake port and the second intake port. The fan motor is fixed to the blower cover at a position facing the one of the first intake port and the second intake port.Type: GrantFiled: February 1, 2012Date of Patent: November 17, 2015Assignee: DENSO CORPORATIONInventor: Toshinori Ochiai
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Patent number: 8979507Abstract: An adjustable cooling mechanism is provided. The cooling mechanism may include: a hollow member surrounding, at least in part, a machine to be cooled; the hollow member having holes oriented at the machine; an outlet configured to outlet a compressed fluid from the machine; a conduit connecting the outlet to an interior of the hollow member; and a throttling mechanism configured to throttle a fluid moving through the holes.Type: GrantFiled: October 28, 2010Date of Patent: March 17, 2015Assignee: SPX CorporationInventors: Dwight Booth, Joseph Haynes
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Patent number: 8931304Abstract: An example compressor arrangement includes a first compressor portion configured to compress a fluid and a second compressor portion configured to compress the fluid more than the first compressor portion. The compressor arrangement also includes a motor disposed between the first compressor portion and the second compressor portion. The first compressor portion is configured to communicate the fluid to the second compressor portion along a primary flow path. The second compressor portion is configured to divert at least some of the fluid from the primary flow path, communicating the diverted fluid back to the first compressor portion along a secondary flow path.Type: GrantFiled: July 20, 2010Date of Patent: January 13, 2015Assignee: Hamilton Sundstrand CorporationInventors: Craig M. Beers, Christopher McAuliffe
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Publication number: 20140003974Abstract: A motor-driven compressor includes a compression unit having a compression chamber, a rotation shaft, an electric motor having a coil, a motor driving circuit, a housing, and a shaft support. The coil includes a first coil end, which is relatively close to the motor driving circuit, and a second coil end, which is relatively close to the compression unit. The housing includes a first area and a second area. A refrigerant passage communicates the first area with the second area. The shaft support includes a guide wall that guides the refrigerant to flow along the radial outer surface of the second coil end. The refrigerant guided by the guide wall is drawn into the compression chamber from the second area through a first suction passage. The first suction passage and the refrigerant passage are arranged at opposite sides of the rotation shaft.Type: ApplicationFiled: June 25, 2013Publication date: January 2, 2014Inventors: Hiroshi FUKASAKU, Minoru Mera, Ken Suitou, Yumin Hishinuma, Takahiro Moroi
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Patent number: 8608458Abstract: A pump assembly includes a pump housing (2) with a fluid entry (6) and a fluid exit (8) for a fluid to be delivered. A stator housing (4) is connected to the pump housing (2). At least one cooling channel (12) is formed in a wall of the stator housing (4) and is connected to cooling channels (22, 24) in the pump housing (2), which are in connection with the fluid entry (6) and the fluid exit (8), so that the fluid flows through the at least one cooling channel on account of the pressure difference between the fluid entry (6) and the fluid exit (8).Type: GrantFiled: February 2, 2010Date of Patent: December 17, 2013Assignee: Grundfos Management a/sInventors: Jens Solvstrom Jensen, Kim Hulegaard Jensen, Steen Mikkelsen
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Patent number: 8496448Abstract: The present invention provides a pump assembly having an intake, an outtake, and a rotor rotatably mounted to a shaft. A propeller is fixedly mounted to the upstream portion of the rotor and is rotatable upon actuation of the rotor. A passageway is disposed on the rotor so as to provide a path for fluids to cool the shaft. The pump assembly includes chamber and a pipe. The chamber is disposed within the housing and is located downstream the intake and is in communication with the passageway. The pipe interconnects the chamber with the outtake. An impeller is fixedly mounted to the rotor opposite the propeller and draws air bubbles from the passageway into the chamber.Type: GrantFiled: March 16, 2010Date of Patent: July 30, 2013Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Kyle Thomas Bernier
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Patent number: 8439655Abstract: Ventilating device (1) comprising a casing (6) intended to channel at least one air flow (3) created by a blower wheel (5), the said casing (6) delimites a main air channel (7) in which a main air flow (3a) circulates and a secondary air channel (8) intended to bring towards a motor (4) a secondary air flow (3b) in order to cool the motor (4), the said secondary air channel (8) comprising a inlet (11) arranged in a main channel wall (7c) and a outlet arranged in a plan containing a casing end by which the wheel (5) is introduced, the said secondary channel (8) further comprising a means intended to change at least twice the direction of the secondary air flow (3b) when the secondary air flow (3b) passes through the secondary air channel (8).Type: GrantFiled: April 4, 2007Date of Patent: May 14, 2013Assignee: Valeo Systemes Thermiques S.A.S.Inventor: Serge Pouysegur
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Patent number: 8308451Abstract: An example fan motor controller housing includes an inner fan housing, an outer fan housing including a base plate, plenums and air passages, stator vanes and a motor control housing. The inner fan housing, the outer fan housing, the stator vanes, and the motor control component housing are all made of a polymer. The fan motor controller housing also includes heat sinks attached to the plenums. The heat sinks are cooled by air flowing from air passages through the plenum. Motor controller components are attached to the heat sink and heat dissipates from the motor controller components to the heat sink.Type: GrantFiled: December 7, 2009Date of Patent: November 13, 2012Assignee: Hamilton Sundstrand CorporationInventor: Debabrata Pal
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Patent number: 8267674Abstract: A motor housing includes a motor support portion defining a central axis and including a first end and a second end, a wall surrounding the motor support portion, a surface offset from the wall toward the second end in a direction parallel with the central axis, a cooling air passageway oriented generally parallel with the central axis and offset from the central axis, and an inlet, opening directly into the cooling air passageway, at least partially defined between the wall and the surface. The inlet is configured to permit entry of a tangential airflow into the cooling air passageway, and the inlet is configured to permit entry of a radial airflow into the cooling air passageway.Type: GrantFiled: February 4, 2010Date of Patent: September 18, 2012Assignee: Robert Bosch GmbHInventors: Alexander Czulak, Thomas R. Chapman
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Patent number: 8007253Abstract: A pump for moving a liquid including a rotor rotatable within a housing and slidable relative to the housing between a first axial rotor position during normal pump operation and a second axial rotor position during a pump inoperative condition.Type: GrantFiled: September 10, 2008Date of Patent: August 30, 2011Assignee: Pratt & Whitney Canada Corp.Inventor: Kevin Allan Dooley
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Patent number: 7946831Abstract: To improve a compressor for refrigerant, comprising an outer casing, a scroll compressor disposed in the outer casing, a drive unit, disposed in the outer casing, for the second compressor body, having an eccentric drive, a drive shaft running in lying arrangement or approximately horizontally in the outer casing and a drive motor, which includes a stator and a rotor seated on the drive shaft, as well as a lubricant supply, in such a manner that the minimum possible quantity of lubricant is required, it is proposed that a lubricant collection space is disposed in the outer casing, that the lubricant supply has a delivery wheel which delivers lubricant from a delivery sump into a feed space for the drive shaft, and that a lower pressure prevails in a lubricant delivery space accommodating the delivery sump than in the lubricant collection space, so that the lubricant which collects in the lubricant space, on account of the pressure difference, passes into the delivery sump.Type: GrantFiled: September 20, 2006Date of Patent: May 24, 2011Assignee: Bitzer Kuehlmaschinenbau GmbHInventors: Dieter Roller, Gernot Balz, Thomas Varga
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Patent number: 7891958Abstract: A pump includes a pump part provided with an impeller having a plurality of blades for sucking and discharging a liquid; a pump case accommodating the pump part; a rotor installed to the impeller to rotate the impeller; a motor part accommodating a stator disposed around an outer periphery of the rotor to drive the rotor and a driving circuit for controlling the stator; a partition member for isolating the motor part from the pump part to protect the motor part therefrom. The pump further includes a reservoir space disposed in the impeller; an extra passage provided between the rotor and the partition member and connected to the reservoir space to introduce the liquid thereto from the blades; and one or more reflux passages, formed at the impeller, for flowing the liquid in the reservoir space back to the blades.Type: GrantFiled: April 12, 2007Date of Patent: February 22, 2011Assignee: Panasonic Electric Works Co., Ltd.Inventors: Toshisuke Sakai, Hidetoshi Ueda
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Patent number: 7819641Abstract: An air mover, such as a cooling fan, comprises a motor and an impeller which is driven by the motor to generate a flow of air through a flowpath. The motor comprises at least one inlet opening and at least one outlet opening, each of which is in fluid communication with the flowpath. In operation of the air mover, a pressure difference between the inlet and outlet openings causes a portion of the flow of air to flow into the inlet opening, through the motor and out the outlet opening to thereby cool the motor.Type: GrantFiled: March 5, 2007Date of Patent: October 26, 2010Assignee: Xcelaero CorporationInventors: John Decker, Chellappa Balan, Ralph J. Carl, Jr., John Miller, Dennis M. Pfister
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Patent number: 7794214Abstract: A pump for pumping a liquid comprises a rotor, a stator having at least one electrical winding and at least one cooling path, and a working conduit extending from a pump inlet to a pump outlet, the working conduit being in liquid communication with the cooling path at least at a cooling path inlet to permit a portion of the pumped liquid to circulate through the cooling path when the pump is in use.Type: GrantFiled: November 30, 2006Date of Patent: September 14, 2010Assignee: Pratt & Whitney Canada Corp.Inventor: Kevin Allan Dooley
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Patent number: 7699587Abstract: A centrifugal blower comprising a cooling air path having an inlet communicating with a blower space and an outlet communicating with the inlet of the motor airflow path, the cooling air path having an upstream portion that extends axially in the direction from the opposite end of the motor toward the drive end of the motor, and the cooling air path having a downstream portion that extends axially in the direction from the drive end of the motor toward the opposite end of the motor.Type: GrantFiled: February 1, 2006Date of Patent: April 20, 2010Assignee: Robert Bosch GmbHInventors: Thomas Richard Chapman, Robert Hodgson White, Jr.
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Patent number: 7638741Abstract: A thermal conductor for a heat-generating liquid pump system of a pool containing liquid and including a pipe. The conductor is adapted for conducting heat from the pump system to liquid circulated by the pump system. The conductor includes a body in thermal communication with a heat generating portion of the pump system and in thermal communication with only an outside surface of the pipe and not in direct contact with the liquid.Type: GrantFiled: May 26, 2006Date of Patent: December 29, 2009Assignee: Emerson Electric Co.Inventors: Donald E. Morgan, Bret S. Clark, Earnest R. Watkins
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Patent number: 7575421Abstract: A compressed air unit is provided having a motor housing with a main motor housing having a cavity. A motor is arranged within the cavity and a compressor rotor is connected to the motor. A cooling duct is integral with and extends from the main housing body. The cooling duct is in fluid communication with the cavity. An inner housing includes a main inlet housing body providing a compressor inlet for providing fluid to the compressor rotor. An inlet duct is integral with and extends from the main inlet housing body and in fluid communication with the compressor inlet. A transfer tube is interconnected between the cooling and inlet ducts. A source of clean cooling air is provided by providing a reverse flow pickup from the inlet flow boundary layer at the compressor inlet.Type: GrantFiled: November 1, 2004Date of Patent: August 18, 2009Assignee: Hamilton Sundstrand CorporationInventors: Christopher McAuliffe, Craig Beers
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Patent number: 7387502Abstract: A pumping apparatus for pumping a liquid from a source to a target including a motor, a first pump driven by the motor, a second pump driven by the motor and a separator in fluid communication with the first and second pump for separating a liquid received from a source into a gaseous component and a liquid component. The separator further diverts the gaseous component to the first pump and the liquid component to the second pump, wherein the first pump pumps the gaseous component back to the source and the second pump pumps the liquid component to a target.Type: GrantFiled: September 14, 2005Date of Patent: June 17, 2008Assignee: Fluid Metering, Inc.Inventors: David Rawlings, Harry E. Pinkerton, III
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Patent number: 7347674Abstract: A fluid pump of the type in which a housing assembly has a first sub-housing having an electric motor therein which is in line with a second sub-housing having the impeller therein, with the motor having a rotor shaft which extends through a seal of the first sub-housing into the second sub-housing and with the impeller mounted on the rotor shaft so as to be rotatable by the motor, and the second sub-housing having inlet and outlet ports through which fluid, such as water, is able to be pumped through the second sub-housing.Type: GrantFiled: March 8, 2002Date of Patent: March 25, 2008Assignee: Davey Products Pty LtdInventors: Sean Roderick Terry, Mark Andrew Lance
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Publication number: 20070224062Abstract: In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.Type: ApplicationFiled: March 23, 2007Publication date: September 27, 2007Inventor: Tomohiro OOMURA
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Patent number: 7219500Abstract: A compressor fuel gas conditioner for a natural gas well having a compressor which utilizes natural gas from the well as a fuel. The conditioner includes a vortex tube having an inlet to receive compressed natural gas from the compressor, a warm gas outlet for gas which has been heated by circular motion in the vortex tube, and a cool gas outlet for cool gas exiting the vortex tube after passing through the tube wherein the warm gas is returned to an inlet side of the compressor. A salt dryer includes a dryer inlet to receive the cool gas exiting the cool gas outlet of the vortex tube and a dryer outlet to deliver gas from the salt dryer as fuel gas to the compressor.Type: GrantFiled: December 2, 2004Date of Patent: May 22, 2007Assignee: Process Equipment & Service Company, Inc.Inventor: James E. Rhodes
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Patent number: 7118355Abstract: An electric motor driven blower assembly provides for a complete air cooling duct running from the inside of the blower housing to the motor at the back of the housing. A vertical cooling tube on the scroll housing is mated to an open, moldable trough in the motor cover across a sealing projection on a vibration gasket. The seal of the vertical tube through the gasket provides a right angle turn in the cooling duct, providing a complete cooling duct while still allowing all parts to be easily molded.Type: GrantFiled: February 4, 2005Date of Patent: October 10, 2006Assignee: Delphi Technologies, Inc.Inventors: Theodore Lipa, III, Kristain J Hagen
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Patent number: 7063519Abstract: This invention provides a small, high efficiency, oil free motor driven compressor/blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications. The motor driven compressor/blower rotor assembly is supported by foil air bearings and rotates at high speed by using a high frequency drive. The impeller is a centrifugal type design. The MDC can be easily integrated into the air management system of a fuel cell.Type: GrantFiled: July 2, 2003Date of Patent: June 20, 2006Assignee: R & D Dynamics CorporationInventors: Giridhari L. Agrawal, Charles W. Buckley
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Patent number: 7033146Abstract: A magnetic drive sealless pump. The pump includes a casing having a fluid suction opening and fluid discharge opening. A shell is combined to the rear part of the casing, and the exterior of the shell is combined with a bracket having a motor for impelling and rotating a drive magnet. At the center of the shell is provided with a shaft enveloped with a bearing having a spiral fluid passage at the interior thereof. A capsule is provided between the bearing and the shell and at the interior of the capsule is provided with a driven magnet situated between the bearing and the drive magnet. The capsule is also extended into the casing and at the front of the capsule is provided with impeller. The impeller, capsule and bearing are integrated into one body for forming a rotating member having a thrust ring at the front and rear parts thereof, respectively, for preventing axial movements of the rotating member.Type: GrantFiled: January 8, 2003Date of Patent: April 25, 2006Assignee: Assoma Inc.Inventor: Chi-Wei Shi
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Patent number: 6997686Abstract: A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A rotating assembly is mounted for rotation in a compressor housing and includes a shaft, a thrust bearing disk associated with the shaft to maintain an axial position of the rotating assembly, a motor rotor mounted on the shaft, and first and second impellers mounted for rotation with the shaft. First and second journal bearings are mounted in the compressor housing to support the shaft and maintain radial positioning of the rotating assembly. Volute housings including a spiral-shaped volute are associated with each of the impellers to collect and further discharge gas compressed by the impellers. Diffusers having air-foil shaped vanes are locate in the volute channels adjacent the discharge outlets of the impellers to aide in the discharge of gas from the impellers.Type: GrantFiled: December 19, 2003Date of Patent: February 14, 2006Assignee: R & D Dynamics CorporationInventors: Giridhari L. Agrawal, Niels A. Jorgensen
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Patent number: 6986648Abstract: A pump including an electric motor mounted in a motor casing, and a rotatable pumping member, the pumping member when rotated by the motor pumping a first fluid, there being a first fluid flow path for the first fluid from a high pressure side of the pumping member, into the motor casing to cool the motor, and to a low pressure side of the pumping member, the pump further including a heat exchanger located between a wall of the motor casing and a heat load, the heat exchanger including a second fluid flow path for a second fluid so that in use, heat is exchanged between the first and second fluids.Type: GrantFiled: May 2, 2003Date of Patent: January 17, 2006Assignee: Dana Automotive LimitedInventors: David John Williams, David Thomas Black