Recirculated Through Pump Patents (Class 417/370)
  • Patent number: 10859098
    Abstract: 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: Grant
    Filed: December 27, 2018
    Date of Patent: December 8, 2020
    Assignee: Zhejiang Dongxin iTechnology Co., Ltd.
    Inventors: Fengping Zhou, Xinjiang Zhou, Guoyao Wu, Xiaoke Zhou, Dong Chen
  • Patent number: 10788051
    Abstract: 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: Grant
    Filed: December 27, 2018
    Date of Patent: September 29, 2020
    Assignee: Zhejiang Dongxin iTechnology Co., Ltd.
    Inventors: Guoyao Wu, Xiaoke Zhou, Xinjiang Zhou, Fengping Zhou, Dong Chen
  • Patent number: 10763723
    Abstract: 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: Grant
    Filed: July 20, 2017
    Date of Patent: September 1, 2020
    Assignees: NIDEC CORPORATION, ZF AUTOMOTIVE GERMANY GMBH, ZF AUTOMOTIVE UK LIMITED
    Inventors: Hiroshi Sambuichi, Nakaba Kataoka, Jochen Scherbart, Guy Healey
  • Patent number: 10619628
    Abstract: 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: Grant
    Filed: September 2, 2015
    Date of Patent: April 14, 2020
    Assignee: Robert Bosch Gmbh
    Inventors: Andreas Plisch, Frank Nitsche, Joerg Heyse, Siamend Flo, Thorsten Allgeier, Walter Maeurer, Tim Reule
  • Patent number: 10443438
    Abstract: 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: Grant
    Filed: November 5, 2015
    Date of Patent: October 15, 2019
    Assignee: AEROJET ROCKETDYNE, INC.
    Inventors: Khin Phui, Thaddeus Chilcoat
  • Patent number: 10260507
    Abstract: 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: Grant
    Filed: August 23, 2012
    Date of Patent: April 16, 2019
    Assignee: Moog Inc.
    Inventor: Ronald Flanary
  • Patent number: 9909593
    Abstract: 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: Grant
    Filed: October 1, 2012
    Date of Patent: March 6, 2018
    Inventor: David Douglas Dieziger
  • Patent number: 9777739
    Abstract: 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: Grant
    Filed: October 14, 2011
    Date of Patent: October 3, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Noriyuki Hayashi, Yukio Yamashita, Byeongil An
  • Patent number: 9660506
    Abstract: 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: Grant
    Filed: May 13, 2014
    Date of Patent: May 23, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yusuke Yoshiizumi, Junya Tachikawa, Manabu Sakurada
  • Patent number: 9611852
    Abstract: 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: Grant
    Filed: March 29, 2013
    Date of Patent: April 4, 2017
    Assignee: Agilent Technology, Inc.
    Inventors: Ronald J. Forni, Scott Driscoll, George Galica
  • Patent number: 9260186
    Abstract: 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: Grant
    Filed: September 7, 2011
    Date of Patent: February 16, 2016
    Assignee: GROEN BROTHERS AVIATION, INC.
    Inventor: Jacob Johannes van der Westhuizen
  • Patent number: 9186954
    Abstract: 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: Grant
    Filed: February 1, 2012
    Date of Patent: November 17, 2015
    Assignee: DENSO CORPORATION
    Inventor: Toshinori Ochiai
  • Patent number: 8979507
    Abstract: 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: Grant
    Filed: October 28, 2010
    Date of Patent: March 17, 2015
    Assignee: SPX Corporation
    Inventors: Dwight Booth, Joseph Haynes
  • Patent number: 8931304
    Abstract: 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: Grant
    Filed: July 20, 2010
    Date of Patent: January 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Christopher McAuliffe
  • Publication number: 20140003974
    Abstract: 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: Application
    Filed: June 25, 2013
    Publication date: January 2, 2014
    Inventors: Hiroshi FUKASAKU, Minoru Mera, Ken Suitou, Yumin Hishinuma, Takahiro Moroi
  • Patent number: 8608458
    Abstract: 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: Grant
    Filed: February 2, 2010
    Date of Patent: December 17, 2013
    Assignee: Grundfos Management a/s
    Inventors: Jens Solvstrom Jensen, Kim Hulegaard Jensen, Steen Mikkelsen
  • Patent number: 8496448
    Abstract: 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: Grant
    Filed: March 16, 2010
    Date of Patent: July 30, 2013
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Tenghua Tom Shieh, Kyle Thomas Bernier
  • Patent number: 8439655
    Abstract: 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: Grant
    Filed: April 4, 2007
    Date of Patent: May 14, 2013
    Assignee: Valeo Systemes Thermiques S.A.S.
    Inventor: Serge Pouysegur
  • Patent number: 8308451
    Abstract: 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: Grant
    Filed: December 7, 2009
    Date of Patent: November 13, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 8267674
    Abstract: 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: Grant
    Filed: February 4, 2010
    Date of Patent: September 18, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Czulak, Thomas R. Chapman
  • Patent number: 8007253
    Abstract: 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: Grant
    Filed: September 10, 2008
    Date of Patent: August 30, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Patent number: 7946831
    Abstract: 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: Grant
    Filed: September 20, 2006
    Date of Patent: May 24, 2011
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Dieter Roller, Gernot Balz, Thomas Varga
  • Patent number: 7891958
    Abstract: 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: Grant
    Filed: April 12, 2007
    Date of Patent: February 22, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Toshisuke Sakai, Hidetoshi Ueda
  • Patent number: 7819641
    Abstract: 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: Grant
    Filed: March 5, 2007
    Date of Patent: October 26, 2010
    Assignee: Xcelaero Corporation
    Inventors: John Decker, Chellappa Balan, Ralph J. Carl, Jr., John Miller, Dennis M. Pfister
  • Patent number: 7794214
    Abstract: 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: Grant
    Filed: November 30, 2006
    Date of Patent: September 14, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Patent number: 7699587
    Abstract: 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: Grant
    Filed: February 1, 2006
    Date of Patent: April 20, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Richard Chapman, Robert Hodgson White, Jr.
  • Patent number: 7638741
    Abstract: 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: Grant
    Filed: May 26, 2006
    Date of Patent: December 29, 2009
    Assignee: Emerson Electric Co.
    Inventors: Donald E. Morgan, Bret S. Clark, Earnest R. Watkins
  • Patent number: 7575421
    Abstract: 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: Grant
    Filed: November 1, 2004
    Date of Patent: August 18, 2009
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Christopher McAuliffe, Craig Beers
  • Patent number: 7387502
    Abstract: 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: Grant
    Filed: September 14, 2005
    Date of Patent: June 17, 2008
    Assignee: Fluid Metering, Inc.
    Inventors: David Rawlings, Harry E. Pinkerton, III
  • Patent number: 7347674
    Abstract: 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: Grant
    Filed: March 8, 2002
    Date of Patent: March 25, 2008
    Assignee: Davey Products Pty Ltd
    Inventors: Sean Roderick Terry, Mark Andrew Lance
  • Publication number: 20070224062
    Abstract: 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: Application
    Filed: March 23, 2007
    Publication date: September 27, 2007
    Inventor: Tomohiro OOMURA
  • Patent number: 7219500
    Abstract: 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: Grant
    Filed: December 2, 2004
    Date of Patent: May 22, 2007
    Assignee: Process Equipment & Service Company, Inc.
    Inventor: James E. Rhodes
  • Patent number: 7118355
    Abstract: 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: Grant
    Filed: February 4, 2005
    Date of Patent: October 10, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Theodore Lipa, III, Kristain J Hagen
  • Patent number: 7063519
    Abstract: 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: Grant
    Filed: July 2, 2003
    Date of Patent: June 20, 2006
    Assignee: R & D Dynamics Corporation
    Inventors: Giridhari L. Agrawal, Charles W. Buckley
  • Patent number: 7033146
    Abstract: 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: Grant
    Filed: January 8, 2003
    Date of Patent: April 25, 2006
    Assignee: Assoma Inc.
    Inventor: Chi-Wei Shi
  • Patent number: 6997686
    Abstract: 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: Grant
    Filed: December 19, 2003
    Date of Patent: February 14, 2006
    Assignee: R & D Dynamics Corporation
    Inventors: Giridhari L. Agrawal, Niels A. Jorgensen
  • Patent number: 6986648
    Abstract: 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: Grant
    Filed: May 2, 2003
    Date of Patent: January 17, 2006
    Assignee: Dana Automotive Limited
    Inventors: David John Williams, David Thomas Black
  • Publication number: 20040234389
    Abstract: An electrically driven waterpump includes a rotor having impellers for feeding fluid. The rotor is housed in a housing. The rotor includes: a working section located in the fluid and contacting the fluid in a main passage of the fluid stirred by the impellers; and a non-working section located in the fluid and apart from the main passage of the fluid. Water repellency is applied to at least either one of an outer surface of the non-working section or a plane of the housing confronting the outer surface of the non-working section with the fluid interposed, so that shear stress of the fluid is reduced, and pump efficiency is improved.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 25, 2004
    Inventors: Makoto Hatano, Shinichi Fujii
  • Publication number: 20040213688
    Abstract: An oil pump for an automatic transmission includes a pump body having a pump chamber, a pump cover disposed so as to oppose to the pump body, an inner rotor disposed in the pump chamber and driven by a driving force from a torque converter and an outer rotor meshed with the inner rotor. The pump body includes a pump suction port, a pump discharge port a first oil, passage for supplying oil from a oil pan to the pump suction port, a second oil passage for returning excess oil of a first regulator to the first oil passage and a third oil passage having an outlet port for retuning excess oil of a second regulator to the pump suction port.
    Type: Application
    Filed: September 25, 2003
    Publication date: October 28, 2004
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Naoya Tanikawa, Takanao Suzuki, Shinichi Takita
  • Patent number: 6604906
    Abstract: A centrifugal multiblade blower includes a first counter-flow prevention means that prevents part of air flowing through a scroll chamber from flowing through a first aperture defined between a multiblade fan and a suction-side case plate of a scroll casing back to a suction port, and a second counter-flow prevention means that prevents part of air flowing through the scroll chamber from flowing through a second aperture defined between the multiblade fan and a motor-side case plate of the scroll casing back to the upstream side of the scroll chamber. A length L1 of the scroll chamber measured in the motor-shaft axial direction is dimensioned to be longer than a length L2 of the multiblade fan measured in the motor-shaft axial direction. Additionally the scroll chamber is gradually enlarged toward a discharge port of the casing.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: August 12, 2003
    Assignee: Calsonic Kansei Corporation
    Inventors: Yukio Ozeki, Masaharu Onda, Toshio Yajima
  • Patent number: 6524083
    Abstract: A partition partitions off a motor chamber and a pump chamber, through which a cooling water flows, a substantially cylindrical-cup shaped rotor is arranged in the pump chamber, a circuit board is disposed in the motor chamber to be in parallel to an annular-shaped end surface of the rotor, a magnetism detecting element is mounted on that portion of the circuit board, which faces a magnet portion of the rotor, and exothermic electronic parts are mounted on the remaining portion of the circuit board.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: February 25, 2003
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Junji Deai, Hirohisa Itou
  • Patent number: 6506034
    Abstract: A fluid pump, in particular for the coolant and heating system of a motor vehicle, has a stator (21) of claw pole construction and a rotor (6), separated from the stator (21) by a pipe (11), which is immersed in the coolant and forms a vane wheel. The rotor (6) is disposed radially inside the stator (21).
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: January 14, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Lentz, Christoph Heier, Matthias Henschel, Wolfgang Krauth
  • Patent number: 6447269
    Abstract: A water-cooled pump motor for delivering potable water in a demand system includes a centrifugal pump including a volute and an impeller in the volute, an electric motor driving the impeller having a hollow rotor shaft, a rotor on the shaft, bearings supporting the rotor shaft, a stator coaxially outward of the rotor, two water impervious liners, one located within the stator and the other coaxially outside the rotor, the liners being spaced to define a cylindrical passageway across the rotor and a cooling and lubricating water passageway for water to flow through the motor including flow from the impeller between the rotor shaft and the bearings, across the cylindrical passageway and through the hollow rotor shaft back into the volute.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 10, 2002
    Assignee: Sota Corporation
    Inventors: Larry Rexroth, Carlos Medica
  • Publication number: 20020106289
    Abstract: An engine blower with excellent engine cooling capacity and sufficient efficiency in restraining noises without deteriorating the blower performance is offered. A fan provided with vanes to create the wind for the blower and the wind for cooling the engine on both side of the rotating plate is rotated inside the blower case in order to cool the engine, the air in the engine case provided with an air inlet port is suctioned into the blower case from the inlet provided on the wall separating the engine case and the blower case by utilizing the negative pressure created by rotation of the fan, the cylinder inside the engine case is cooled by the air passing from the air inlet port to the blower case via the engine case, and the engine noise emitted to the outside from the air inlet port from the engine case is minimized by passing the air in the engine case to the blower case from the air inlet port.
    Type: Application
    Filed: February 6, 2001
    Publication date: August 8, 2002
    Inventors: Kohya Tanaka, Tetsuji Shibata
  • Patent number: 6350109
    Abstract: A rotary pump (PP) for taking in a liquid such as a hydrocarbon comprises a pump wheel (1) secured to a rotor (4) which is immersed in a portion of the liquid taken in by the pump. A motor (11) having a stator element (111) mounted in a case (5) and a rotor element (110) mounted on the rotor (4) serves to cause the rotor (4) to rotate about an axis (40). Radial magnetic bearings (7, 8) and axial magnetic bearings (9, 10) support and guide the rotor (4) inside an enclosure (6). A jacket (61) is provided to protect the stator element (111) of the motor (11) from the liquid. The pump is characterized in that the rotor (4) has at least one groove (45, 46) in an outer surface that is covered by the liquid, particularly to reduce the inertial effects due to the liquid.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: February 26, 2002
    Assignee: Societe de Mecanique Magnetique
    Inventors: Maurice Brunet, Eric Helene
  • Publication number: 20010033800
    Abstract: A partition partitions off a motor chamber and a pump chamber, through which a cooling water flows, a substantially cylindrical-cup shaped rotor is arranged in the pump chamber, a circuit board is disposed in the motor chamber to be in parallel to an annular-shaped end surface of the rotor, a magnetism detecting element is mounted on that portion of the circuit board, which faces a magnet portion of the rotor, and exothermic electronic parts are mounted on the remaining portion of the circuit board.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 25, 2001
    Applicant: Aisan Kogyo Kabushiki Kaisha
    Inventors: Junji Deai, Hirohisa Itou
  • Patent number: 6283726
    Abstract: A radial blower, particularly for heating and air-conditioning systems for automobiles, has a spiral blower housing that is provided with an air intake (5) in a housing lateral wall and with an air outlet out of the spiral housing. A blower drive motor for a fan wheel is mounted to the housing with the fan wheel positioned in the spiral housing to face the air intake (5). The fan wheel has a fan ring with fan blades and a hub. The fan ring and the hub are connected to each other by a shell shaped vaulted or dished fan disk, which at least partly surrounds the drive motor. Fan disk openings (43) permit at least a portion of cooling air flowing through the drive motor to be discharged through the disk openings (43) into a blower air discharge chamber (23) in the spiral housing.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: September 4, 2001
    Assignee: TEMIC Automotive Electric Motors GmbH
    Inventors: Walter Fackelmann, Heinrich Hillrichs
  • Patent number: 6254361
    Abstract: A pump having a generally hollow housing, an annular rotor rotatively mounted inside the housing, an annular stator fixedly mounted inside the housing and peripherally surrounding the rotor and a closed impeller axially aligned with the annular rotor. The impeller includes a tubular fluid inlet member fixedly mounted within the annular rotor, such that the rotor rotatively drives the impeller.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: July 3, 2001
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: Eugene P. Sabini
  • Patent number: 6241486
    Abstract: A screw pump, includes a pump case having a fluid inlet, a pumping chamber, and a fluid discharge with at least two intermeshed parallel screw members rotatably mounted therein and in fluid communication with the fluid inlet and the fluid discharge. One synchronous electric drive motor mounted to each screw member provides the driving power to the screws. Electronic controls are provided for sensing the rotary positions of the motors for synchronizing rotation of the screw members. The pump is also capable of pumping multi-phase fluids.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: June 5, 2001
    Assignee: Flowserve Management Company
    Inventor: Donald P. Sloteman
  • Patent number: 6200108
    Abstract: A pump which is designed to be mounted within a recirculating water system where a portion of the recirculating water is diverted (bypass water) and cause to flow through the motor chamber with this recirculating water to absorb heat that is produced during the operation of the motor. The heated bypass water is then added back to the recirculating water. The pump includes an electric motor which is mounted within a pump motor chamber of a motor housing and is completely enclosed therein. The pump motor chamber is filled with oil thereby submerging of the electric motor in oil. A water conducting tube is mounted within the pump motor chamber and surrounds the electric motor. The tube inlets water from the pressure side of the pump impeller, conducts this bypass water entirely through the tube and then discharges the bypass water into the inlet of the recirculating water to the pump impeller.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: March 13, 2001
    Assignee: Aqua-Flo, Incorporated
    Inventors: Dirk A. Caudill, Reuel S. Orocio