Cooling Or Fluid Contact Patents (Class 310/52)
  • Patent number: 10932393
    Abstract: Particular embodiments described herein provide for an electronic device that can be configured to include a torsional heat pipe. The torsional heat pipe can include a first housing static portion located in a first housing of an electronic device, where the first housing static portion is coupled to a heat source, a second housing static portion located in a second housing of the electronic device, where the second housing static portion is coupled to a heat spreader, and a torsion portion located in a hinge of the electronic device, where the hinge rotatably couples the first housing to the second housing and the torsion portion rotates as the second housing rotates relative to the first housing and the torsion portion couples the first housing static portion to the second housing static portion.
    Type: Grant
    Filed: March 30, 2019
    Date of Patent: February 23, 2021
    Assignee: Intel Corporation
    Inventors: Juha Tapani Paavola, Mikko Antero Makinen, Columbia Mishra, Mark Carbone
  • Patent number: 10931162
    Abstract: A rear frame has a plurality of engaging portions engaged with connection members. An engagement surface of the specific engaging portion which is a part of the plurality of engaging portions is in a state in which the connection member is in contact with the connection member, and the material of the rear frame is exposed. Among the plurality of engaging portions, the other engaging portion other than the specific engaging portion and the outer wall portion of the rear frame exposed to the outside space have a coating.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: February 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Toshio Tsutsui, Yasufumi Matsuo, Koji Matsuo
  • Patent number: 10923986
    Abstract: A magnetic anti-lock device for a rotating shaft is described. The magnetic anti-lock device utilizes opposing magnets to reduce the varying force required to rotate the shaft and increases efficiency of the rotating shaft. The magnetic anti-lock device includes at least one inner magnet attached to the rotating shaft, and at least one outer magnet fixed in position relative to the rotating shaft. The inner magnet passes the outer magnet each time the shaft rotates creating a repulsive force to reduce the force necessary to rotate the shaft.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: February 16, 2021
    Inventors: David Brian Baker, Sam Bryan Williams
  • Patent number: 10910890
    Abstract: An electrical machine includes a casing including a base wall provided with a projection projecting from the base wall towards the inside of the casing. A stator includes a core having a plurality of pole shoes, a plurality of conductors wound on the pole shoes to form a plurality of coils constituting a stator winding. Insulators are interposed between the core and the stator winding. A coil of the winding has an end portion engaged with the projection for heat exchange. The insulators include a housing for a first number of turns of the coil and a second housing for a second number of turns of the coil. The first and second housings are shaped such that a layer of the turns of the end portion abutted against the projection is defined by stretches of the conductors all substantially coplanar with each other.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 2, 2021
    Assignee: SPAL AUTOMOTIVE S.R.L.
    Inventor: Pietro DeFilippis
  • Patent number: 10910920
    Abstract: An annular rotating armature is presented. The annular rotating armature includes an armature winding having a plurality of coils, an armature support structure and a magnetic shield disposed between the armature winding and the armature support structure. The magnetic shield having a first magnetic shield ring, a second magnetic shield ring disposed concentric to the first magnetic shield ring and coupled to the first magnetic shield ring via a magnetic shield bridge link. An air gap is formed between the first magnetic shield ring and the second magnetic shield ring. The magnetic shield bridge link is disposed within the air gap. A superconducting generator including the annular rotating armature and a wind turbine having such superconducting generator are also presented.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: February 2, 2021
    Assignee: General Electric Company
    Inventors: David Allan Torrey, Nidhishri Tapadia, Joseph Zierer, Anbo Wu
  • Patent number: 10883503
    Abstract: A gas ejection apparatus includes: a cylinder having a rotating member that rotates within the cylinder; a motor coupled to the rotating member of the cylinder and that causes gas to be compressed inside the cylinder and to be ejected from the cylinder by causing rotation of the rotating member; a control circuit board that controls the motor; and a case in which the cylinder, the motor and the control circuit board are disposed. The case extends in a planar direction and has side surfaces that are orthogonal to the planar direction. The motor and the cylinder are arranged adjacent to each other in the planar direction of the case. The control circuit board is disposed adjacent to and substantially parallel to one of the side surfaces of the case.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 5, 2021
    Assignee: DENSO TEN Limited
    Inventors: Masashi Hida, Tomohisa Koseki, Masashi Otomi, Toru Yamaguchi
  • Patent number: 10886808
    Abstract: Provided is an electric linear actuator that enables reduction of the mounting space and reduction of costs. An electric motor of this electric linear actuator is an axial gap motor including a stator and a rotor which are disposed such that orientations of magnetic poles which generate interlinkage flux which contributes to torque generation are parallel to the rotation axis of the electric motor. Further, a linear motion mechanism and the electric motor are disposed in line along the same axis which serves as the axis of a rotation input and output shaft of the linear motion mechanism. First and second coil terminals have extended portions extended in the outer-diameter side in the radial direction with respect to the rotation axis, and the extended portions are electrically connected to a control device through a wiring mechanism.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 5, 2021
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Patent number: 10873246
    Abstract: A driving unit includes a motor, a control unit and a partition member. The control unit includes an inverter configured to transfer electric power to and/or from the motor, and a casing configured to accommodate the inverter. The partition member is disposed between the motor and the inverter. The partition member includes a first heat conductive member, and a second heat conductive member disposed at a first side of the first heat conductive member in a thickness direction and having a thermal conductivity lower than that of the first heat conductive member and a third heat conductive member disposed at a second side of the first heat conductive member in the thickness direction of the first heat conductive member and having a thermal conductivity lower than that of the first heat conductive member. The heat conductive member is coupled to the casing.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: December 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yuichi Hidaka
  • Patent number: 10868452
    Abstract: A motor includes a rotor to rotate about a motor axis, and a stator radially outside of the rotor. The rotor includes a shaft extending along the motor axis, and including a collar portion and a screw portion located along an axial direction on an outer circumferential surface thereof, a rotor core surrounding the shaft from radially outside, a rotor magnet fixed to the rotor core, a pair of plate-shaped end plates on both axial sides of the rotor core, and a nut screwed onto the screw portion. The rotor core and the pair of end plates are held between the collar portion and the nut. Each end plate includes a first surface opposite to an axial end surface of the rotor core, and a second surface facing away from the first surface. The first surface includes a slanting surface that slants toward the rotor core and extends radially outward, and is in contact with the axial end surface of the rotor core.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 15, 2020
    Assignee: NIDEC CORPORATION
    Inventor: Yasuo Yamaguchi
  • Patent number: 10862371
    Abstract: A perimeter electric machine cooling arrangement includes a cooling conduit arranged to remove heat from an integrated housing containing an electric motor and a power inverter. The electrical connections between the electric motor and the power inverter are provided by flexible, pre-formed busbars that are arranged in pass over liquid cooling connections in the region between the electric motor and the power inverter. The integrated housing includes an intermediate cover over the electric motor and the power inverter portions of the housing, with a window through which the busbars can pass to reach the electric motor. The housing is further provided with an outer housing cover and seals that isolate the electric motor and the power inverter from the exterior environment and one another.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: December 8, 2020
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Jeffrey Geither, David Colavincenzo, Fernando Venegas Diaz
  • Patent number: 10862374
    Abstract: A rotor for a synchronous machine of a motor vehicle includes an excitation coil configured to generate a magnetic field necessary for rotation of the rotor in a stator of the synchronous machine. The rotor also includes a supply circuit, to which energy is fed contactlessly such that the supply circuit supplies the excitation coil with the energy. The rotor also includes a demagnetization circuit configured to demagnetize the excitation coil, which, upon collapse of the energy supply of the excitation coil, diverts a current flowing through the excitation coil into a circuit branch in which at least one component for demagnetization is arranged, wherein the at least one component is also configured to perform a protection function to protect the supply circuit against an induced voltage generated at the excitation coil.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 8, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christoph Sudan, Berthold Schinnerl, Nuno Miguel da Silva Cerqueira, Falko Friese, Daniel Ruppert
  • Patent number: 10855139
    Abstract: The electric motor includes a frame defining an inner volume (VI) wherein is accommodated a rotor, a stator and a fan, the frame comprising a first aperture placing the inner volume (VI) of the frame in fluidic communication with the outside of the frame, a second aperture placing the internal volume (VI) of the frame in fluidic communication with the outside of the frame along a radial axis (R) substantially perpendicular to an axis of rotation (X) of the rotor. The fan being positioned in proximity to the second aperture and being configured for generating a gas fluid flow (F), at least one acoustic attenuation device is accommodated in the second aperture so as to partly close the second aperture.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: December 1, 2020
    Assignee: ALSTOM TRANSPORT TECHNOLOGIES
    Inventors: Philippe Dubois, Thomas Mas, Andry-Mamy Randria, Michel Scherer, Jean-Pierre Lombard
  • Patent number: 10848026
    Abstract: Provided is an electric linear actuator that enables reduction of the mounting space and reduction of costs. An electric motor of this electric linear actuator is an axial gap motor including a stator and a rotor which are disposed such that orientations of magnetic poles which generate interlinkage flux which contributes to torque generation are parallel to the rotation axis of the electric motor. Further, a linear motion mechanism and the electric motor are disposed in line along the same axis which serves as the axis of a rotation input and output shaft of the linear motion mechanism. First and second coil terminals have extended portions extended in the outer-diameter side in the radial direction with respect to the rotation axis, and the extended portions are electrically connected to a control device through a wiring mechanism.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: November 24, 2020
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Patent number: 10840772
    Abstract: A hand held machine tool for machining workpieces, comprising a housing in which a motor driving a rotor shaft is accommodated, and having an air guide region formed in the housing for supplying cooling air to the motor along a main flow direction oriented substantially parallel to the motor longitudinal axis. The air guidance region is limited at one end by at least one air inlet and at the other end by at least one air outlet for discharging the cooling air from the housing. A separator is arranged in the air guide region for dividing the cooling air into an outer partial air flow flowing around the outer circumference of the motor and into an inner partial air flow flowing through the motor. The separator is formed such that a degree of contamination of the outer partial air flow is greater than a degree of contamination of the inner partial air flow.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: November 17, 2020
    Assignee: C. & E. Fein GmbH
    Inventor: Wolfgang Duernegger
  • Patent number: 10819189
    Abstract: A cooling apparatus includes: an annular internal liquid coolant flow channel that is mounted to a rotary electric machine main body, and in which an internal liquid coolant circulates around an outer circumference of the rotary electric machine main body, and an external liquid coolant passage portion through which an external liquid coolant passes, the external liquid coolant passage portion is connected to the internal liquid coolant flow channel by a connecting portion that is positioned vertically higher than the rotary electric machine main body, and the electric power converting apparatus includes a heat radiating surface that releases heat that is generated in the electric power converting apparatus, the electric power converting apparatus being mounted to the cooling apparatus such that the heat radiating surface and the internal liquid coolant can exchange heat at a position that is vertically lower than the connecting portion.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: October 27, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masaru Shinozaki, Yugo Asai, Yusuke Kimoto, Hiroyuki Ushifusa, Yoshiaki Kitta, Yoshiyuki Deguchi
  • Patent number: 10811938
    Abstract: Radial direction outer side sizes of a first rectifying unit, a circuit board, and a second rectifying unit configuring a rectifying device are disposed so as to be sequentially smaller in a direction away from a frame of a rotating electrical machine main body, and at predetermined intervals, a cover covering the rectifying device has a cover end wall portion, a cover outer wall portion, and a cover intermediate portion, an inner peripheral side inlet portion is formed in the cover end wall portion, an outer peripheral side inlet portion is formed in the cover intermediate portion, and the outer peripheral side inlet portion is formed of an axial direction covering portion, and a radial direction covering portion that connects the axial direction covering portion and an outer peripheral portion of the cover end wall portion.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 20, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi
  • Patent number: 10811933
    Abstract: This motor includes a frame defining an inner space (VI) in which a rotor, a stator and a fan are housed, the frame comprising an a first opening placing the inner space (VI) of the frame in fluid communication with the outside of the frame, a second opening placing the inner space (VI) of the frame in fluid communication with the outside of the frame along a radial axis (R) substantially perpendicular to a rotation axis (X) of the rotor. The fan being arranged near the second opening and being configured to create a flow (F) of a gaseous fluid, a first acoustic attenuation device is housed in the second opening so as to partially close the second opening.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 20, 2020
    Assignee: ALSTOM Transport Technologies
    Inventors: Philippe Dubois, Xavier Kania, Jean-Pierre Lombard
  • Patent number: 10793182
    Abstract: An integrated electric power steering apparatus in which a control unit 1 or 101 for controlling a motor 2 is disposed inside a housing, the control unit 1 or 101 is disposed so as to be coaxial to an output shaft 21 of the motor 2, and in which the control unit 1 or 101 and the motor 2 are integrated, wherein: the control unit 1 or 101 includes a circuit board 4 and an intermediate member 36; main parts are mounted to the circuit board 4; wiring is disposed on the intermediate member 36; the circuit board 4 and the intermediate member 36 are stacked; the parts are mounted to first and second surfaces of the circuit board 4; and a portion of the housing and first surfaces of the parts are placed in direct contact or are placed in contact so as to have a heat-transferring member interposed.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: October 6, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Akihiko Mori
  • Patent number: 10797563
    Abstract: Provided is a power generating device which, while having a basic structure of using a rack and a pinion, increases power generating efficiency and has fewer components, has improved durability due to a simplified structure, and can easily be made in smaller sizes. Configuring a guide mechanism using outer walls of a case of a power generating unit as guides and combining the same with rails provided on inner walls of a case of the power generating device distributes unnecessary stress on the power generating unit over the inner walls of the case to obtain effects of achieving an overall small size, reduction in the number of components, and improved durability.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: October 6, 2020
    Assignee: ADAMANT NAMIKI PRECISION JEWEL CO., LTD.
    Inventor: Tomohide Aoyagi
  • Patent number: 10788111
    Abstract: A cover for a torque converter and an electric motor, comprising a cover surface that includes a first cluster of perforations that are located adjacent to a first end of a rotor of the motor, wherein the perforations are arranged to transfer fluid from the torque converter to a rotor of the electric motor.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: September 29, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Jeremy Vanni
  • Patent number: 10778068
    Abstract: A rotating electrical machine cooling structure such that a cooling medium is supplied by a pump to a stator and rotor of a rotating electrical machine, thereby cooling the stator and rotor, includes a first passage that supplies the cooling medium from the pump to the stator, a second passage that supplies the cooling medium from the pump to the rotor, and a valve that regulates a flow of the cooling medium of the first passage and a flow of the cooling medium of the second passage, wherein a cooling state of the stator and a cooling state of the rotor are controlled by the valve.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: September 15, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tadashi Murakami, Masaya Inoue, Kouichi Ojima
  • Patent number: 10734865
    Abstract: The invention relates to an electric motor comprising an electronics housing having motor electronics accommodated therein and a stator housing arranged axially at a distance from the electronics housing, wherein, axially between the electronics housing and the stator housing there is arranged a twin-flow cooling wheel which, during operation, generates a first cooling air stream along the electronics housing and a second cooling air stream along the stator housing and/or at least one bearing shield adjoining the stator housing axially.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: August 4, 2020
    Assignee: ebm-papst Mulfingen GmbH Co. KG
    Inventors: Matthias Maschke, Hartmut Messerschmidt, Friedrich Schaffert, Wolfgang Ströbel, Michael Sturm
  • Patent number: 10704693
    Abstract: A rotary union that includes a heated ferrofluid seal is disclosed. The rotary union includes an inner rotating shaft, an intermediate rotating shaft and an outer rotating shaft. The inner rotating shaft is hollow to allow the flow of cryogenic fluid in one direction. The inner rotating shaft and the intermediate shaft are spaced apart to create a channel for the return of the cryogenic fluid. The intermediate rotating shaft is separated from the outer rotating shaft by a gap so as to reduce thermal conductivity. In this way, the temperature of the outer rotating shaft is greater than the temperature of the cryogenic fluid. A heated ferrofluid seal is disposed between the outer rotating shaft and the housing.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 7, 2020
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Robert Mitchell, Roger B. Fish, Shardul S. Patel
  • Patent number: 10696149
    Abstract: An electric vehicle includes an energy storage system, an integrated drive system assembly having a gearbox, a power inverter, and an electric motor, wherein the gearbox, the electric motor and the power inverter are assembled into a single unit with a multi-piece housing. The electric vehicle may also include two half shafts for respective wheels of the electric vehicle. The gearbox, the electric motor and the power inverter may be oriented such that the gearbox extends along a center line of the electric vehicle and the electric motor and the power inverter extend from the gearbox in opposite directions. The electric vehicle may also include a mutual thermal management system coupled to the integrated drive system assembly and having at least one liquid coolant loop that is thermally coupled to the electric motor, the power inverter, the gearbox, a cooling system, a refrigeration system, and an HVAC system.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: June 30, 2020
    Assignee: Tesla, Inc.
    Inventors: Edwin M. Pearce, Jr., Jim Robbins, Benjamin D. Dettmann, Nicholas R. Kalayjian, Michael R. Kubba
  • Patent number: 10693347
    Abstract: A motor device includes a motor, a motor driver housing, a motor control circuit board, a heat dissipation device, a heat isolation element and at least one fixing element. The motor includes fins arranged at a lateral portion of the motor. The motor driver housing includes a bottom surface. A gap is provided between the bottom surface and the lateral portion. The heat dissipation device is disposed at an end portion of the motor. The heat dissipation device includes a heat dissipation housing and a single fan. The heat dissipation housing includes an inlet and a first outlet. The first outlet faces the gap. The fan is disposed in the heat dissipation housing. The heat isolation element is connected to the motor and the heat dissipation housing. The fixing element passes through the heat isolation element and fixes the heat dissipation housing to the end portion of the motor.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 23, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Zong-Lin Li, Wang-Hsuang Huang, Chen-Shi Chou
  • Patent number: 10673312
    Abstract: A stator for an electric machine comprising a rotor and stator poles. At least one partial amount of stator poles each comprises a pole winding and a permanent magnet unit. A first magnetic flux induced by the permanent magnet unit is superimposed by a second magnetic flux is an electric voltage is applied to the pole winding or an electrical current is injected into the pole winding. A recess is arranged in the permanent magnet unit, which recess faces the rotor. An electric machine comprising a stator according to the invention, wherein the rotor is designed to change a magnetic resistance of a magnetic circuit, which extends through a permanent magnet unit of stator poles of the stator, according to the position of the rotor.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: June 2, 2020
    Assignee: MAGNA POWERTRAIN GMBH & CO KG
    Inventors: Stephan Bouvier, Peter Pisek, Andreas Schmidhofer
  • Patent number: 10666113
    Abstract: A sealed induction motor for a chiller assembly is provided. The induction motor includes a stator, a rotor, and a shaft with a first end and a second end. The rotor and the shaft are configured to rotate relative to the stator. The induction motor further includes a first magnetic bearing assembly located proximate the first end of the shaft and a second magnetic bearing assembly located proximate the second end of the shaft. The first and the second magnetic bearing assemblies are configured to support the shaft. The shaft is coupled to a centrifugal compressor using a direct drive connection.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: May 26, 2020
    Assignee: Johnson Controls Technology Company
    Inventors: Paul W. Snell, Ian Casper, Jeb W. Schreiber, Daniela Bilmanis, Ajit Kane
  • Patent number: 10658904
    Abstract: A rotating electrical machine includes: a rotor; a stator; a high voltage bushing; power lines connecting the stator coil to the bushing; a support insulator that supports the power lines; a rotating electrical machine outer casing that contains at least the rotor, the stator and a connection portion between the stator coil and the power lines, and is filled with hydrogen gas; and a terminal box which communicates with the outer casing and is attached to a lower portion of the outer casing, the insulator installed in the terminal box, and terminal box containing at least the power lines supported by the insulator and a part of the bushing connected to the supported power lines. The insulator is installed vertically on a bottom face of the terminal box, and the vertically installed insulator and a portion of the bushing in the terminal box are disposed in parallel with each other.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 19, 2020
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Seijiro Muramatsu, Kenta Igarashi, Keiji Fugane, Kentaro Yasumatsu, Shinji Waki, Hirohide Murayama, Toru Muto, Chuanhong Fan
  • Patent number: 10632833
    Abstract: In a vehicle drive device, a case cover includes a cylindrical wall portion formed circumferentially in an outside space of a first rotating shaft and projecting toward the case parallel to an axial direction of the first rotating shaft, an oil pump includes a pump cover arranged in a space radially inside the wall portion and a pump chamber formed in a space radially inside the wall portion by the case cover including the wall portion and the pump cover to house the pump gear, and the wall portion includes a support portion disposed on the other axial end side of the first rotating shaft relative to the pump cover, having a bearing fitted thereto, and rotatably supporting a second rotating shaft via the bearing.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 28, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroaki Kiyokami, Yota Mizuno, Tatsuo Obata
  • Patent number: 10630127
    Abstract: An electric motor includes an end turn ring and a cooling structure that is in a thermally conductive relationship with the end turn ring.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: April 21, 2020
    Assignee: APPLE INC.
    Inventors: Dillon J. Thomasson, Kan Zhou, Rui Guan, Yateendra B. Deshpande, William M. Price
  • Patent number: 10622852
    Abstract: A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: April 14, 2020
    Assignee: Denso Corporation
    Inventors: Yoji Yamada, Koji Mikami
  • Patent number: 10621541
    Abstract: A dynamoelectric machine includes a shaft, a rotor radially outward from the shaft with the rotor and shaft arranged to rotate in unison, a stator radially outward from the rotor with the stator being stationary relative to the rotor and shaft, and a heat transfer feature adjacent to and radially outward from the stator. The heat transfer feature includes a base encasing the stator, the base having a first end, a second end, and an axial middle; a first set of fins extending radially outward from the base adjacent the first end and the second end; and a second set of fins extending radially outward from the axial middle of the base with the second set of fins each having a smaller surface area and being closer to one another than the first set of fins.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 14, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Michael J. Andres, Robert Scott Downing
  • Patent number: 10598014
    Abstract: The turbomachine comprises a casing (26), there being arranged in the casing an impeller (23) arranged on a driven shaft. The turbomachine has an inflow region (21) and an outflow region (22) and, in operation, is flowed through by a working medium. The working medium flows into the inflow region, along a front side (23a) formed on the impeller and subsequently out of the outflow region, there being a pressure drop at the front side between the inflow region and the outflow region. A pressure divider (9) is arranged on the rear side of the impeller, opposite the front side.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: March 24, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Wengert, Bernd Banzhaf, Frank Ulrich Rueckert, Nadja Eisenmenger
  • Patent number: 10601299
    Abstract: A high temperature superconductor (HTS) rotating machine having a longitudinal axis and having a first rotational inertia. There is a cylindrical stator assembly disposed about the longitudinal axis and a cylindrical rotor assembly disposed within the stator assembly. The rotor assembly is configured to rotate within the stator assembly about the longitudinal axis. The rotor assembly includes at least one HTS winding assembly which, in operation, generates a magnetic flux linking the stator assembly. There is a cylindrical electromagnetic shield disposed about the at least one HTS winding assembly having a second rotational inertia. There is a cryogenic cooling system for cooling the at least one superconducting winding assembly of the rotor assembly. The second rotational inertia is at least eighty percent (80%) of the first rotational inertia.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 24, 2020
    Inventor: Bruce B. Gamble
  • Patent number: 10598084
    Abstract: In a lubrication and cooling system for an electric machine operably driven by a turbine, a rotatable shaft may extend through an electric machine housing and a first and second bearing may be operably spaced apart from each other and coupled to the rotatable shaft. Furthermore, an electromagnetic rotor may be coupled to the rotatable shaft and disposed between the first and second bearings. A stator may be fixedly attached within the electric machine housing such that the electromagnetic rotor freely rotates along with the rotatable shaft. Additionally, a fluid passage defined in the electric machine housing delivers a portion of fluid to lubricate the first and second bearings and the remaining portion of fluid to circumferentially flow around the stator such that the fluid is in thermal communication with an outside surface of the stator to help maintain a desired operating temperature of the electric machine.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: March 24, 2020
    Assignee: BorgWarner Inc.
    Inventors: Austin L. Hoke, Frederick M. Huscher, Brock S. Fraser, Allen Stoner
  • Patent number: 10587162
    Abstract: An electric motor includes a case, a stator that includes end-windings, a rotor coupled to the case via at least one rotor bearing, at least one drive motor fluid pump, and drive motor electronics. The rotor includes a hollow cylindrical body, a first shaft portion, and a second shaft portion, a fluid feed tube having a fluid receive end and a fluid feed end, the fluid feed end extending into the hollow cylindrical body, and a plurality of fluid exit ports. The drive motor electronics power the stator with or without causing rotation of the rotor. The drive motor fluid pump pumps fluid into the hollow cylindrical body via the fluid feed tube, pumps the fluid out of the plurality of fluid ports, and onto the stator end-windings to collect heat from the rotor and the stator. The heated fluid may be used for heating a battery.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 10, 2020
    Assignee: Tesla, Inc.
    Inventors: Bozhi Yang, Tomas Vianna Martins, Scott Michael Graves, Ethan Swint, Eric Bellemare, Lev Fedoseyev, Benjamin Dellal, Leif E. Olsen, Alexander Hain
  • Patent number: 10587163
    Abstract: A brushless motor includes a stator assembly including a generally-cylindrical stator body having a center bore, teeth extending from the stator body towards the center bore and defining slots in between, and windings wound around the teeth; and a rotor assembly rotatably received within the center bore and includes a rotor shaft and a generally-cylindrical rotor body. The motor further includes at least one rotor bearing mounted on the rotor shaft, and at least one bearing support member supporting the rotor bearing. The bearing support member includes a radial body forming a bearing pocket for receiving the rotor bearing therein, and axial post inserts received within the slots of the stator assembly between adjacent sets of windings and engaging an inner surface of the stator body to support the rotor bearing with respect to the stator assembly along a center axis of the center bore of the stator assembly.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: March 10, 2020
    Assignee: Black & Decker Inc.
    Inventors: Colin M. Crosby, Merritt J. Tennison, Ryan F. Schroeder, Jarrett A. Dunston, David J. Smith, Barak N. Gohn, Andrew M. Palich, Justin H. Ayers
  • Patent number: 10587169
    Abstract: A rotor for an electric machine is formed of a rotor shaft and a rotor body which is non-rotatably mounted on the rotor shaft. At least sections of the rotor shaft are configured as a hollow shaft. A delivery screw is non-rotatably mounted in the hollow shaft for conveying a cooling fluid in a first direction through the hollow shaft. In order to provide an improved cooling of the rotor, the rotor body is formed with at least one cooling channel which extends in the axial direction. The cooling channel has an end-face inlet opening and an end-face outlet opening positioned on the opposite side for the cooling fluid. The cooling fluid conveyed in the first direction through the hollow shaft can be at least partially directed through the inlet opening into the cooling channel and conveyed in a second direction, which is counter to the first direction, to the outlet opening.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 10, 2020
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Stefan Gruetzner, Christian Riehm
  • Patent number: 10584611
    Abstract: A coupling guard for a rotating member comprising a shell surrounding the rotating member, a plenum disposed in the shell, at least an injection tube for injecting a cooling gas and an outlet for discharging the cooling gas, wherein the injection tube extends through the plenum from a first axial opening proximal to the shell to a second axial opening proximal to the rotating member, the injection tube having a leading edge which first contacts the gas circulating in the plenum and a trailing edge opposite to the leading edge, the second opening having a first portion orthogonal to the axis of the injection tube and a second portion across the trailing edge, adjacent to the first portion and parallel to the axis of the injection tube.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: March 10, 2020
    Assignee: NUOVO PIGNONE SRL
    Inventors: Marco Pelella, Andrea Bernocchi, Angelo Grimaldi, Simone Tanteri
  • Patent number: 10566873
    Abstract: Provided is a rotating electrical machine including a housing in which a flow passage of cooling liquid can be easily formed and airtightness and productivity are high. A rotating electrical machine is configured to include a housing which is provided with a part of a flow passage of cooling liquid, a stator which is disposed on an inner circumferential side of the housing and includes a stator winding, and a rotor which is rotatably supported to an inner circumferential side of the stator with a gap between the stator and the rotor and the flow passage of the cooling liquid includes an annular groove having an open surface on at least one side of an axial direction of the housing and a plate provided to cover the open surface. Preferably, the housing and the plate are configured to be joined by welding or an adhesive material.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: February 18, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Toshio Ishikawa, Masahiko Honma
  • Patent number: 10566881
    Abstract: A motor control system to drive an alternating-current (AC) motor. The motor control system includes a motor drive. The motor drive may include a duct having first, second and third openings. The motor control system may include a bypass circuit to power the AC motor if the motor drive experiences a fault or to save energy.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 18, 2020
    Assignee: Franklin Electric Co., Inc.
    Inventors: Ryan A. Lauw, Scott E. Leonard, Dalton H. Paull, Andre P. Perra
  • Patent number: 10550892
    Abstract: A motor includes a rotor rotatable about an axis, a housing defining a motor chamber receiving at least a portion of the rotor, and a bearing assembly rotatably supporting the rotor on the housing. The housing includes a pair of axially spaced apart endshields. The bearing assembly includes a bearing and lubricant collection structure associated with the bearing. The lubricant collection structure defines a collection chamber configured to collect lubricant from the motor chamber and direct the lubricant to the bearing.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 4, 2020
    Assignee: Nidec Motor Corporation
    Inventors: Thomas E. Kirkley, Jr., Lawrence J. Wittman, Andrew F. Poag
  • Patent number: 10541584
    Abstract: A motor includes a bus bar holder with a bottom portion widening from an inner surface of a main body portion to a radially inner side, and protrusion portions extending from the bottom portion toward one side. A wiring member held by the bus bar holder includes circuit board connection terminals electrically connected to one surface of the circuit board. The circuit board connection terminals are arranged in a predetermined direction at one surface of the circuit board. An outer edge of the circuit board is provided with a first notch portion in which one of the protrusions is located. The first notch portion is opened toward any one of a direction from the center axis to the circuit board connection terminal and a predetermined direction, when viewed from one direction.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: January 21, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Hidehiro Haga, Ryusuke Sato
  • Patent number: 10530221
    Abstract: A cooling structure integrated with an electric motor and a controller includes a shell and a rear water jacket. The controller includes a power module and a control module. The electric motor has a rotor and a stator. The shell, shaped as a cylinder, is to sleeve the stator. The rear water jacket includes at least one assembly hole. The assembly hole is to allow at least one conductive pillar to penetrate therethrough. The rear water jacket, mounted to an axial end of the shell, is furnished with a plurality of rear water-jacket waterways. The stator electrically couples one end of the conductive pillar, while another end of the conductive pillar is connected with the power module.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: January 7, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Huan-Lung Gu, Shao-Yu Lee, Shih-Kai Hsieh, Shih-Hsiang Chien
  • Patent number: 10507926
    Abstract: A conveying device for conveying a fluid stream comprising a mechanical unit, including a movable conveying element, and an electrical unit comprising a housing as well as electronic elements arranged in the housing. The mechanical unit and the electrical unit are detachably connected to one another.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: December 17, 2019
    Assignee: Airbus Operations GmbH
    Inventors: Dariusz Krakowski, Stephan Risse
  • Patent number: 10498199
    Abstract: A rotary electric machine of the present invention includes, inside a housing, a rotor and a stator that are concentric with each other. The stator has a plurality of coil portions in a circumferential direction. In the stator, a first flow channel and a second flow channel, through which cooling water flows, are provided along the plurality of coil portions, each of the channels having one end connected to a flow channel inlet and the other end connected to a flow channel outlet. The lengths of the first flow channel and the second flow channel are mutually different. A temperature detection element is provided in a coil portion on a high temperature side among the coil portions positioned along the first flow channel and the coil portions positioned along the second flow channel.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ken Nishikawa, Norihiro Watanabe, Koichi Ojima
  • Patent number: 10483822
    Abstract: A motor includes a rotating shaft, a rotor, a stator, a bracket, and a control device mounted on the bracket. The bracket includes a cylindrical bracket main body, and a stator frame which faces the bracket main body across a clearance and holds an outer surface of the stator on the radially inward side of the bracket main body. The control device is mounted on the bracket main body. The bracket is provided with a cooling passage, and an inflow port and an outflow port connected with the cooling passage. The cooling passage includes a control device cooling passage provided between the bracket main body and the control device, a stator cooling passage provided between the bracket main body and the stator frame, and a communication passage coupling the control device cooling passage and the stator cooling passage.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: November 19, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Masato Nakanishi, Yasuo Ishiyama, Yoshinobu Nakamura, Takumi Okada
  • Patent number: 10461608
    Abstract: A motor includes a stator unit having a stator, a rotor, a first bearing for supporting a first shaft portion of a shaft of the rotor in a first portion of the stator unit, a second bearing for supporting a second shaft portion of the shaft in a second portion of the stator unit, a first sensor for measuring a first parameter related to an operating state of the first bearing in the first portion of the stator unit, and a guide path provided in the stator unit, for guiding a first signal line of the first sensor from the first portion to the second portion.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 29, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yuusuke Fukushima
  • Patent number: 10454338
    Abstract: A case for an electric motor includes a case body provided with an inner case and an outer case together forming a cooling fluid flow path penetratingly formed in an axial direction of the case body, and a circuit component mounting portion protruding from an outer surface of the outer case to mount a circuit component such that the circuit component is cooled by cooling fluid. Case covers are coupled to both end portions of the case body so that the electric motor and the circuit component can be simultaneously cooled by the single cooling fluid flow path. In this way, a separate circuit component case for mounting the circuit component can be excluded, thereby reducing a size and weight of the case.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: October 22, 2019
    Assignee: LG Electronics Inc.
    Inventors: Seungmo Jung, Taehee Kwak, Hyeongjun Kim
  • Patent number: 10439475
    Abstract: An electric motor with a stator housing (2) and with an electronics housing (8), has a first section (A) of the electronics housing arranged on the radial side of the stator housing (2), and a fan (24) arranged on a first axial end (22) of the stator housing (2). The electronics housing (8) extends in the axial direction (X) beyond the first axial end (22) of the stator housing in a manner such that a second section (B) of the electronics housing (8), in whose inside at least one first heat-producing electronic component (58, 60) is arranged, is situated on the radial side of the fan (24). A pump assembly with such an electric motor is also provided.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: October 8, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Palle Madsen Obel, Lars Østergaard