Circulation Patents (Class 310/58)
  • Patent number: 10790726
    Abstract: The invention relates to an assembly (1000) comprising an electrical machine (100) comprising: a stator (9) having windings forming coils (106), a rotor (103), a shaft (101) rotating the rotor (103), and an impeller (1) for cooling the electrical machine, said cooling impeller (1) comprising at least two crowns (2, 21, 22), including a first crown (21) and a second crown (22), each crown (2, 21, 22) comprising blades (3), the blades (3, 31) of the first crown (21) of the cooling impeller (1) being arranged so as to generate the circulation of a cooling fluid flow in a first direction (F1), and the blades (3, 32) of the second crown (22) being arranged so as to generate the circulation of the cooling fluid flow in a second direction (F2), the second direction (F2) opposing the first direction (F1). Said invention is applicable to motor vehicles.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: September 29, 2020
    Assignee: INSTITUT VEDECOM
    Inventor: Guy Diemunsch
  • Patent number: 10784741
    Abstract: A cooling structure for rotary electric machine is provided. The cooling structure for rotary electric machine comprises a sleeve, a plurality of dividers, a plurality of first walls and a plurality of second walls. The sleeve comprises an annular surface of a first half annular surface and a second half annular surface. The dividers are configured on the annular surface of the sleeve in parallel to provide multiple channels. The first walls are configured on the first half annular surface and between multiple corresponding dividers to provide multiple first division regions. The second walls are configured on the second half annular surface and between multiple corresponding dividers to provide multiple first division regions wherein the first division regions are asymmetric to the second division regions.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 22, 2020
    Assignee: HIWIN MIKROSYSTEM CORP.
    Inventors: Chen-An Li, Ruei-Bin Hsiao, Li-Wei Cheng
  • Patent number: 10784747
    Abstract: The invention relates to an electric motor, particularly an “external rotor motor”, comprised of a stator housing and a rotor housing which is rotatable with respect to the stator housing, wherein the rotor housing has a cooling ring disposed on its side which axially faces the stator housing, wherein the stator housing and the cooling ring are each provided with a plurality of first and second cooling fins (the second cooling fins also being referred to as “cooling ribs”) which face each other axially and are disposed so as to be distributed in the respective circumferential directions, which fins/ribs collaborate in flow technology when the rotor housing is in rotating operation; wherein, in an axial plan view, the first cooling fins extend radially outwardly, and the second cooling fins (the cooling ribs) are V-shaped and point in the circumferential direction, wherein a rotary relative movement of the first and second cooling fins (the cooling fins and the cooling ribs) generates a cooling air stream, at
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: September 22, 2020
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventors: Michael Sturm, Werner Müller
  • Patent number: 10734876
    Abstract: A brushless motor for a heating, ventilation, and air conditioning (HVAC) system. The brushless motor includes a rotor and a stator. The rotor has an odd number (X) of magnets. The stator defines an odd number (Y) of slots, each including a plurality of fractional-pitch phase windings. The brushless motor has a fundamental order that is (X·Y)/2, which is a non-integer number.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: August 4, 2020
    Assignees: DENSO International America, Inc., DENSO CORPORATION
    Inventors: Prakash Thawani, Stephen Sinadinos, Fouad Dallal
  • Patent number: 10724544
    Abstract: A centrifugal compressor is provided. The centrifugal compressor includes a housing and a rotatable assembly mounted for rotation about an axis within the housing. The rotatable assembly includes an impeller forming part of a compressor stage. A first air intake is located at a first end of the apparatus, the first air intake providing an air source for the compressor stage and a second air intake is located at a second end of the apparatus. A thrust plate is attached to the rotatable assembly, the thrust plate including at least one interior channel so that air entering the second air inlet passes through the at least one interior channel.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: July 28, 2020
    Assignee: Vortech Engineering, Inc.
    Inventors: Gregory Graham, Robert Anderson, James Middlebrook
  • Patent number: 10697368
    Abstract: The hyperbaric load control for a power plant is an energy storage device used to regulate the tangent velocity of a gas turbine. Specifically, the hyperbaric load control for a power plant: a) releases previously stored energy in the form of supplemental electrical energy to compensate for an energy deficit created by an operating condition where the electrical energy demanded by the electric load is greater than the energy provided by the gas turbine; and, b) absorbs and stores the excess energy created by an operating condition where the energy transferred to the electric generator from the gas turbine is greater than the electric energy demanded by the electric load. The hyperbaric load control for a power plant comprises an electric motor, a compressor, a high pressure gas tank, a supplemental turbine, a supplemental electric generator, and a control system.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: June 30, 2020
    Inventor: Tilahun Anshu
  • Patent number: 10675753
    Abstract: A robot includes an arm that includes an arm main body and a motor and rotates about a rotation axis, and an amplifier unit that is provided in the arm and includes a drive circuit which drives the motor, in which at least a portion of the amplifier unit or the motor is positioned on the outside of the arm main body as seen from an axial direction that is parallel to the rotation axis.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: June 9, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Seiji Hahakura, Hidenori Hama
  • Patent number: 10615656
    Abstract: A motor comprising: a stator including a plurality of coils, and a rotary axis penetrating the stator, the stator includes n (n?2) sets of three-phase circuits, each of which is provided with three phases, each phase of the three-phase circuit has a coil group in which m (m?2) coils are formed with a single conductive wire, and all coil groups of three-phase circuits have the same winding direction, the three-phase circuits include neutral point bus bars connecting each coil terminal on one side of each of the coil group at a neutral point, and three phase bus bars connecting each coil terminal on one side of each of the coil group, the three phase bus bars are arranged in a circumferential direction and form a phase bus bar group, and the phase bus bar group and the neutral point bus bars are alternately arranged in the circumferential direction.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 7, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Hidehiro Haga, Yu Asahi
  • Patent number: 10587170
    Abstract: A rotor body for a high-speed generator includes a rotor body with interior and exterior surfaces, a coolant inlet and outlet, and a rotor cooling path for actively cooling the rotor body. The coolant inlet and outlet extend between the interior and exterior surfaces. An interior segment of the rotor cooling path fluidly couples the coolant inlet and coolant outlet and is bounded by the rotor body interior surface. An exterior segment of the cooling path is bounded by the rotor body exterior surface and fluidly couples the coolant outlet an environment external to the rotor body.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: March 10, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Lubomir A. Ribarov, Robert Scott Downing, Richard A. Himmelmann
  • Patent number: 10566874
    Abstract: The rotary electrical machine comprises, in front, a pulley (3) secured to a shaft (9) of a rotor (20) passing through the front bearing (1a) of a housing. The bearing includes a base, having a nose (18) for mounting a front ball bearing (7) for rotating the shaft (9), and air inlets (15) defined by arms belonging to an outwardly opening area connecting a peripheral strip of material from the base to the nose (18) in order to shift the nose (18) toward the front in accordance with the central body of a device (100) for adjusting the tension of a belt received in the groove (31) of the pulley (3) and attached onto the housing (1a, 1b). The adjustment device (100) comprises at least one idler (200, 201) for tensioning the belt and a central opening (102) enabling passage of air through the air inlets (15).
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: February 18, 2020
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Ryadh Ben-Omrane, Christophe Monteil, Blaise Rouleau
  • Patent number: 10557478
    Abstract: A fan assembly for a robot vacuum cleaner and a robot vacuum cleaner are provided. The fan assembly includes an electric motor, a stator impeller, a rotor impeller and a fan cover. The stator impeller defines a shaft hole, the electric motor is mounted on a side of the stator impeller, and an output shaft of the electric motor passes through the shaft hole. The fan cover is mounted on another side of the stator impeller, and an end surface of the fan cover away from the stator impeller defines an air inlet. The rotor impeller is mounted to the output shaft of the electric motor and located between the fan cover and the stator impeller.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: February 11, 2020
    Inventors: Xiaowei Xu, Fangfei Xiong
  • Patent number: 10560003
    Abstract: A motor includes a shaft presenting a shaft lead end, a switch assembly including a switch arm shiftable between a first position and a second position, and shield structure. The shaft lead end and the switch assembly are disposed axially outward of an endshield. The shield structure is disposed axially outward of the switch arm to at least substantially restrict direct tool access to the switch arm from an axially outward position relative to the switch arm. The shield structure at least in part defines first and second tool access channels each extending radially inwardly to the shaft lead end, such that the shield structure enables direct tool access to the shaft lead end via the tool access channels but prevents or at least substantially restricts direct tool access to the switch arm via the tool access channels.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 11, 2020
    Assignee: Nidec Motor Corporation
    Inventors: John G. Schrader, Steven R. Palmer, Jeffrey S. Sherman
  • Patent number: 10530214
    Abstract: The application relates to a stator frame of an electrical machine having a first end and a second opposite end. A flange is protruding from the first end and surrounding the first end. The stator frame includes cooling fluid channels and cooling fins on the outer surface of the stator frame extending from the first end to the second end. The stator frame is formed as a single piece. The ends of the outer walls of the cooling fluid channels in the first end are connected to the flange and the cooling fins extend to the junction of the flange and the first end.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: January 7, 2020
    Assignee: ABB Schweiz AG
    Inventors: Toni Kilpeläinen, Aleksi Kinnunen, Jani Kosonen
  • Patent number: 10519969
    Abstract: A centrifugal fan is provided. The centrifugal fan comprises a housing and an impeller. The housing includes an upper cover and a lower cover. The impeller is configured in the housing. The impeller includes a hub, a plurality of blades and an air guiding structure. The hub is pivoted on the lower cover and rotates around a rotation axis. The rotation axis extends in the axial direction. The blades are connected to a peripheral surface of the hub and configured between the upper cover and the lower cover. The air guiding structure is connected to the blades. An angle between the air guiding structure and the rotation axis increases along with a distance in the direction away from the hub.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: December 31, 2019
    Assignee: ASUSTEK COMPUTER INC.
    Inventors: Hsin-Chen Lin, Ing-Jer Chiou
  • Patent number: 10523092
    Abstract: A vehicle AC power generator includes a protection cover disposed at the rear side of a rear bracket included in a housing of the vehicle AC power generator, an attachment bolt that penetrates a through-hole formed in a bottom portion of a protection cover and is fixed to a portion at one axle-direction side of the housing, an output terminal bolt that extends from a rectifier, which rectifies AC electric power, toward the outside of one axle-direction side of the protection cover, and an insert coated conductor that is supported by the output terminal bolt and the attachment bolt and is provided at the rear surface of the protection cover.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: December 31, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Katsuya Akamatsu, Kazunori Tanaka, Kyoko Higashino
  • Patent number: 10516309
    Abstract: Provided is a rotating machine capable of obtaining a uniform temperature distribution by improving a cooling air flow to a heat generation portion. The rotating machine has a salient pole rotor (11) and a stator (12). The salient pole rotor (11) has a rotation shaft (15), a disk-shaped spoke (22), a cylindrical rib (23), and a plurality of salient poles (25) arranged in a radial shape on an outer circumferential surface of the rib (23), each of the salient poles (25) being formed along an axial direction of the rotation shaft (15). The disk-shaped spoke (22) is provided to an anti-feeding side end of the cooling air of the salient pole rotor (11). The cylindrical rib (23) is provided with through-holes (231) extending from an inner space of the cylindrical rib (23) through gaps between a plurality of salient poles (25).
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 24, 2019
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Takayuki Mihara, Dan Umeda
  • Patent number: 10516321
    Abstract: This invention is concerning a rectifying device in an AC power generator, the rectifying device including a broken-ring-shaped heat sink supporting a rectifying element and cooling the rectifying element and a circuit board holding the heat sink. The circuit board includes an engaging projection. The heat sink includes a hole, into which the engaging projection is fit, and a gravity center adjustment portion.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: December 24, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yuzuru Kobayashi
  • Patent number: 10468938
    Abstract: The invention relates to an electric motor (100) comprising a stator (2) and a rotor (3), the rotor (3) being arranged around the stator (2), an element (9) for supporting said rotor (3) and said stator (2), a motor support (5) through which a stream of fluid flows, a radiator (8) and an electronic body (7), said radiator (8) being inserted between said motor (100) support (5) and said electronic body (7), characterised in that the element (9) for supporting the rotor (3) and the stator (2), and the radiator (8), form the same so-called bifunctional part (30).
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: November 5, 2019
    Assignee: Valeo Systemes Thermiques
    Inventors: Morgan Le Goff, Geoffroy Capoulun
  • Patent number: 10454330
    Abstract: A motor including a stator including a plurality of stator slots having stator coils disposed therein, and a rotor rotatable within the stator about a central axis. The stator includes a plurality of stator channel formed adjacent to the stator slots and extending in the axial direction of the central axis.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 22, 2019
    Assignee: WARD LEONARD INVESTMENT HOLDINGS, LLC
    Inventors: Eric Sailor, Daniel Cook, Alexander Gimmel, Alex Bridgemohan, Paul Matthews, Myron Moroz
  • Patent number: 10432065
    Abstract: A brushless direct current motor for a power tool. The motor includes a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The motor also includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that receives an output shaft. The rotor assembly also includes a rotor end cap on a first side of the rotor core having a bearing holder and defining a channel, wherein the channel is open on a side of the rotor end cap facing the rotor core. The motor further includes a bearing provided in the bearing holder that couples the rotor end cap to the output shaft and a position sensor board assembly provided in the channel of the rotor end cap and configured to provide position information of the rotor core to a motor controller.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: October 1, 2019
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Andrew T. Beyerl, Keith Boulanger, Alex Huber, William A. Elger, Jeffrey M. Wackwitz
  • Patent number: 10418881
    Abstract: A rotary electric machine includes a rotor, a stator disposed facing the rotor in a radial direction having a stator core with a plurality of slots aligned in a circumferential direction and a stator winding wound around the slots of the stator core, and a cooling mechanism for cooling first and second coil-end groups of the stator winding by dropping a liquid coolant from an outer peripheral side thereof. The stator is disposed along an inner circumferential surface of at least one of the first and the second coil-end groups of the stator winding, and there is provided a shielding member for preventing the liquid coolant from falling into the inner circumferential side of the first and the second coil-end groups. Thus, it is possible to cool throughout the first and the second coil-end groups efficiently and reliably by the liquid coolant, a sufficient cooling effect can be obtained.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: September 17, 2019
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 10418882
    Abstract: A traction motor comprises a stator, a rotor core, an iron core holder, a cooling fan, a rotor, a frame, a bracket, and a bearing unit. The cooling fan includes a main plate that separates the inside and the outside of the totally-enclosed traction motor; blades provided on the bracket side of the cooling fan and along a rotational direction of the rotor; and a guide provided on the bracket side of the blades. In the bracket, inlets are provided within an area obtained when the guide is projected onto the bracket. The guide is formed such that air drawn in through the inlets is guided to a rotor shaft.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: September 17, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Kenta Kaneko
  • Patent number: 10404136
    Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: September 3, 2019
    Assignee: Black & Decker Inc.
    Inventors: Craig A. Oktavec, David J. Smith, Colin C. Crosby, Matthew J. Velderman, Zollie W. Privett, Jr., Pradeep Pant, Kyle J. Christophersen, Daniel F. Nace, James H. Stiles, III, Floyd E. Moreland, IV
  • Patent number: 10396636
    Abstract: In a power converter, outer lead frames are drawn out from a semiconductor module and are bent to be separated from a cooler. Each of the outer leads has a terminal end. The terminal end of each outer lead frame projects from a virtual plane extending along a second surface of a housing. Connector leads each includes an inner portion disposed in the housing, and an outer portion drawn out from the housing and bent to be separated from the cooler. The outer portion of each connector lead has a terminal end. The terminal end of the outer portion of each connector lead projects from the virtual plane.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 27, 2019
    Assignee: DENSO CORPORATION
    Inventor: Nobuo Isogai
  • Patent number: 10355562
    Abstract: A slip-ring arrangement for an electrical rotary machine has a rotor and a sliding-contact device which is arranged on the rotor and has a slip ring, and a sliding-contact element with which the slip ring can make electrical contact. Furthermore, a radial fan impeller with an intake device is arranged on the rotor, wherein the intake device is designed in such a way that, during operation of the radial fan impeller, a cooling fluid can be drawn into the radial fan impeller through the intake device along the sliding-contact device. Furthermore, the slip-ring arrangement has a spiral housing which is of spiral design and surrounds a radial circumference of the radial fan impeller.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: July 16, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Christian Hoenig
  • Patent number: 10355564
    Abstract: The subject of the invention is an electronic architecture (10) intended to supply an electric machine for automotive vehicle, the electronic architecture (10) comprising at least: an electronic power unit (100); a thermal dissipator (200) supporting the electronic power unit (100); an electronic control unit (300) configured to control the said electronic power unit (100); a support (400) of the electronic control unit supporting the electronic control unit (300) and arranged between the electronic power unit (100) and the electronic control unit (300); and an electrical connector (500) comprising at least one power trace intended to be connected electrically to at least some electrical elements (phase ?, B+, B?) of the electric machine and/or of an electrical energy source, the electrical connector (500) being arranged between the electronic power unit (100) and the support (400) of the electronic control unit and configured to electrically connect the electronic power unit (100) and/or the electronic co
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: July 16, 2019
    Assignee: Valeo Systemes de Controle Moteur
    Inventors: Guillaume Tramet, Arnaud Mas, Ernesto Sacco
  • Patent number: 10312769
    Abstract: Provided is a motor enabling more simple and efficient cleaning of the inside of an air path. The motor includes a stator, a housing which holds the stator, a fan arranged outside the stator, a fan cover which houses the fan and is mounted on the housing, an air path including an inlet and an outlet for a cooling gas, and a first cleaning hole extending from a first opening that faces and opens to the air path at a position closer to the outlet than the inlet to a second opening which opens to the outside.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: June 4, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yasuyuki Nakazawa
  • Patent number: 10298085
    Abstract: A motor support unit designed to be mounted on a shell of a heating, ventilation and/or air-conditioning installation is disclosed. Additionally, the motor support unit includes a motor and a motor support. The motor support unit further includes a connection piece for fitting on the motor support and may also be intended for fitting on the shell in such a manner as to form an interface between the motor support and the shell. Furthermore, the connection piece and the motor support are formed by two distinct pieces.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: May 21, 2019
    Assignee: Valeo Systemes Thermiques
    Inventors: Geoffroy Capoulun, Morgan Le Goff, Alain Farkh
  • Patent number: 10288077
    Abstract: A blower device includes: a ring cover attached to a motor holder along an opening to cover a motor top; and a blower fan having a rotation center to which a rotation shaft is coupled. The blower fan has a lower end portion that is adjacent to the motor holder. The ring cover includes: a sleeve portion covering the motor top; a flange portion extending continuously from a lower end of the sleeve portion to cover a surface of the motor holder; and a skirt portion formed along a periphery of the flange portion in an annular shape. The skirt portion with the annular shape is pressed into an annular groove of the motor holder.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: May 14, 2019
    Assignee: DENSO CORPORATION
    Inventor: Hirohisa Motomura
  • Patent number: 10288082
    Abstract: A fan assembly includes a drive housing having a shaft opening, a drive mechanism (e.g., an electric motor) positioned in the drive housing and including a fan shaft positioned through the shaft opening, and a fan rotor mounted for rotation with the fan shaft. The fan rotor includes cooling vanes and a cooling plate positioned between the cooling vanes and the shaft opening. Preferably, the cooling plate includes a flat portion adjacent the cooling vanes and a substantially curved portion radially inward of the flat portion to guide air from the drive housing to the cooling vanes. The fan rotor can further include exhaust blades and a back plate between the exhaust blades and the cooling vanes. An air inlet shroud guides air to the exhaust blades, and the fan rotor can further include an inlet venturi plate positioned between the exhaust blades and the air inlet shroud.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: May 14, 2019
    Assignee: Carnes Company, Inc.
    Inventor: Nicholas B. Howe
  • Patent number: 10277089
    Abstract: An electric machine includes a rotor and a stator having a horizontal peripheral direction. The rotor and the stator interact electromagnetically. The stator has a number of offset, radially oriented teeth for a winding, with the teeth being arranged in the horizontal peripheral direction. The teeth are each connected to a tooth cap and to a tooth pole. At least one tooth is formed by two webs, which are spaced part in the horizontal peripheral direction and are oriented radially in the zenith direction, for accommodating a solidifiable, in particular curable, medium between the webs.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: April 30, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Müller, Stefanie Reubelt, Benjamin Volkmuth, Andreas Wehner
  • Patent number: 10271465
    Abstract: Heat exchangers are adjacent to electric driving units. Electric blowers of electric blower units rotate at rotational speed corresponding to amounts of heat generation of the electric driving units and suck air (ventilation air and outboard air). The sucked-in air passes through the heat exchangers that are adjacent to the electric driving units.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: April 23, 2019
    Assignee: IHI Corporation
    Inventors: Noriko Morioka, Hitoshi Oyori
  • Patent number: 10263496
    Abstract: Provided is a cooling apparatus for an electric machine that is integrally combined with the cover of the electric machine and includes a body portion around the circumference of an external surface of the cover that has a first part which is formed at a first angle in a direction away from the cover, and a second part which is formed in a second angle in a downward direction which is opposite the direction of the first part, wherein the first part and the second part form an opening therebetween. The body portion is formed above a plurality of fins attached to a frame of the electric machine, wherein the fresh air is introduced into the fins and mixes with air from an air inlet end and exits through an air outlet end at the opposite end of each fin of the plurality of fins.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 16, 2019
    Assignee: WOLONG ELECTRIC AMERICA LLC
    Inventor: Vishwanath U. Hangari
  • Patent number: 10243431
    Abstract: The present disclosure relates to a heat dispersion apparatus for motors, which comprises: a cooling fan, and a guide cover. The cooling fan has a plurality of fan blades disposed radially on a back plate, the outside portion of the fan blades axially extend beyond the periphery of the back plate, and the back plate is a cone structure. The guide cover has air inlet, a plurality of holes opened on the surface of the air inlet with slots, the slots arranged in accordance with the rotation direction of the cooling fan, and each slot set up a chamfer for leading into more air to reduce temperature. With this device, airflow supercharging and peripheral axial flow are improved, and the slot structure and the cooling fan blades can introduce a large scale of air; thereby the present invention provides a significant improvement to motors.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 26, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ying-Che Weng, Chun-Han Chen, Hung-Cheng Yen, Yung-Jen Cheng
  • Patent number: 10218235
    Abstract: A rotor includes a rotor core and a permanent magnet. A core refrigerant passage is configured to guide refrigerant supplied from a shaft refrigerant passage to an outer peripheral end of the rotor core. The first refrigerant passage extends from an inner peripheral end of the rotor core to a position inside the permanent magnet. The first refrigerant passage is placed at a position deviating from a q-axis of the rotary electric machine in a circumferential direction. The second refrigerant passage is provided on the q-axis. The second refrigerant passage extends from the outer peripheral end of the rotor core toward an inner peripheral side in the rotor core. The third refrigerant passage configured to provide communication between the first refrigerant passage and the second refrigerant passage, the third refrigerant passage being placed at a position deviating from the second refrigerant passage in a rotor axis direction.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki Hattori
  • Patent number: 10211698
    Abstract: In an inverter integrated motor apparatus, a cylindrical base frame has an inverter unit accommodating section. The inverter unit has a plurality of control substrates and a plurality of power modules which are provided on the control substrates. In the inverter unit accommodating section, a plurality of openings are provided at intervals in the circumferential direction. A rib section is formed between mutually adjacent openings. The openings are covered by the plurality of heat sinks. The power modules and control substrates are disposed on the inside of the heat sinks.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: February 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shota Hanioka, Yoshihiro Miyama, Norihiro Watanabe, Akihiro Daikoku
  • Patent number: 10199908
    Abstract: In this rectifying apparatus, a circuit board is disposed between a first rectifying element holding portion and a second rectifying element holding portion such that first rectifying element connecting portions are disposed in a loosely fitted state inside a second penetrating aperture that is formed on the second rectifying element holding portion, and second rectifying element connecting portions are disposed in a loosely fitted state inside a first penetrating aperture that is formed on the first rectifying element holding portion; first leading electrodes of a plurality of first rectifying elements respectively extend axially and are connected to each of the first rectifying element connecting portions; and second leading electrodes of a plurality of second rectifying elements respectively extend axially and are connected to each of the second rectifying element connecting portions.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: February 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi, Kyoko Higashino
  • Patent number: 10193166
    Abstract: A fuel cell system (1) includes a reformer (2), for generating a reformate gas, a fuel cell (3) for generating electric current from cathode air and reformate gas, an air supply (4), which draws in ambient air and splits this at least into reformer air and cathode air, sends the reformer air via a reformer air line (15) in the direction of the reformer and sends the cathode air via a cathode air line (16) in the direction of a cathode side (11). A recirculating line (20) connects an anode side (10) to the reformer (2). A hot gas delivery (24), which contains a hot gas path (26), is arranged in the recirculating line for driving the anode waste. A cooling air path (27), which is integrated into the cathode air line, through which the reformer air or cathode air flows, reduces thermal load of the hot gas delivery.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 29, 2019
    Assignee: Eberspächer Climate Control Systems GmbH & Co. KG
    Inventors: Oleg Dering, Manfred Stute
  • Patent number: 10158273
    Abstract: A liquid-cooled motor device includes a motor casing, a motor, a coolant casing and an impeller. The motor casing receives the motor, and defines a cooling space surrounding the retaining space, a coolant intake hole, and a coolant draining hole. The coolant casing defines a drawing space, a coolant inlet and a coolant outlet. The impeller is disposed in the drawing space and connected to an output shaft of the motor, and is rotated by the output shaft to draw a coolant into the drawing space via the coolant inlet, and to force the coolant into the cooling space via the coolant outlet and the coolant intake hole, such that the coolant removes heat generated by the motor, and is expelled from the cooling space via the coolant draining hole.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: December 18, 2018
    Inventor: Chien-Kuo Yen
  • Patent number: 10155292
    Abstract: A power-tool cooling apparatus for a portable power tool comprises at least one cooling unit configured to generate a cooling fluid flow to cool a drive unit of the portable power tool, and at least one further cooling unit configured to generate a further cooling fluid flow. The at least one further cooling unit is designed to differ from the at least one cooling unit.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: December 18, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Michael Weiss, Torsten Riek, Andreas Schlegel, Steffen Tiede, Christian Lang, Hardy Schmid, Juergen Dietel, Benjamin Nikolas Fischle
  • Patent number: 10123628
    Abstract: An air passage forming member includes an air passage inner wall surface that forms a wall surface of a connecting air passage connected to a cushion air passage. A blower device case has an air intake opening that is connected to the connecting air passage. A centrifugal fan is received in the inside of the blower device case. The air passage forming member is arranged such that at a downstream end of the connecting air passage, the air, which flows along the air passage inner wall surface in the connecting air passage, forms an air flow, which is directed in an axial direction of a fan central axis, or an air flow, which is directed toward an outer side in a radial direction of the fan central axis in comparison to the air flow that is directed in the axial direction.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: November 13, 2018
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Fumiya Ishii, Masanori Yasuda, Shuzo Oda
  • Patent number: 10122243
    Abstract: The rotating electric machine includes a housing, a pair of bearings that is fixed by the housing, a shaft supported at opposite ends thereof by the respective bearings, a rotor mounted on the shaft for rotation therewith, and a stator disposed in such a manner as to surround the rotor. A rotational speed detection gear is mounted on the shaft for rotation therewith at a position between the rotor and one of the bearings and in a vicinity of the bearing, and the rotational speed detection gear has a plurality of gear teeth at an outer circumference thereof. A rotational speed detector is provided at a position in the housing so as to face the gear teeth of the rotational speed detection gear. A rotating member for generating a flow of air is disposed in the housing.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: November 6, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuzo Hirai, Tomohiro Kosaki, Tsutomu Imai
  • Patent number: 10116189
    Abstract: A rotating electrical machine has a housing, a stator having a stator core and a rotor having a rotor core and rotor side plates rotatably supported by the housing. The rotor core is arranged to have a gap between the end surfaces of the rotor core and the stator. Oil containers are arranged on at least one surface of the rotor side plate. Each oil container has a scoop-up part and an exhaust outlet formed on end sections thereof. When the rotor is rotating, the scoop-up part scoops up an oil stored in the housing, the oil and inside air are compressed in the oil container, and the exhaust outlet exhausts the oil and compressed air to the coil end of the stator. The housing stores the oil at a lowermost side thereof so that the scoop-up part and the exhaust outlet are immersed in the oil.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 30, 2018
    Assignee: DENSO CORPORATION
    Inventors: Takeo Maekawa, Keiji Kondou, Masayoshi Yamamoto, Takashi Sato, Tomoyuki Shinkai
  • Patent number: 10103586
    Abstract: A stator and a rotor are mounted inside a case of the permanent magnet motor, and separate the inner cavity of the case into a first inner cavity and a second inner cavity. Axial ventilation holes in communication with the first inner cavity and with the second inner cavity, are disposed in teeth of a stator core of the stator, and each axial ventilation hole is a taper hole extending in a height direction of each tooth. The width of one end of the axial ventilation hole, which is close to a head of the tooth, is greater than the width of the other end of the axial ventilation hole, which is close to a root of the tooth. The taper holes enable fluid to fully carry out exchange heat at the teeth where heat is generated most intensively.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: October 16, 2018
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Zhao Fan, Yabin Ding, Ying Chen, Huaican Liu
  • Patent number: 10069380
    Abstract: A system is provided for liquid cooling of an electric motor generator unit. The electric motor generator unit includes a magnetic air gap running between a stator and a rotor, wherein for the cooling of the electric motor generator unit, the air gap is acted on with cooling liquid supplied from the outside. A control device adapts the pressure or the volume flow of the supplied cooling liquid as a function of a determined actual value of an operating temperature variable of the electric motor generator unit.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: September 4, 2018
    Assignee: Deere & Company
    Inventors: Rainer Gugel, Norbert Fritz, David Mueller
  • Patent number: 10008907
    Abstract: An electric machine includes a stator. The stator has a plurality of slots defined between a plurality of laminated protrusions. A plurality of wire windings is disposed in the slots. The wire windings form end windings at respective ends of the stator. A cover is disposed about the end windings. A coolant chamber is defined between an inner surface of the cover and the stator. The cover includes a plurality of flow disruption members extending from the inner surface into the coolant chamber.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 26, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner
  • Patent number: 10008906
    Abstract: An electrical rotating machine includes a laminated stator core having a first axial duct to convey a cooling air stream generated by a turbomachine through the laminated stator core to a rear stator winding overhang, and a second axial duct to return the cooling air stream from the rear stator winding overhang back through the laminated stator core. An air guide is attached to the laminated stator core on a side of the rear stator winding overhang to redirect the cooling air stream via the rear stator winding overhang. Radial slots between the ducts and an air gap between the laminated stator core and a rotor are spaced from one another at an axial distance which decreases toward a turbomachine-distal side of the laminated stator core so as to compensate a temperature gradient caused by the one-sided cooling.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: June 26, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Frank Seibicke
  • Patent number: 10001139
    Abstract: An electric coolant pump includes a housing, a motor received in the housing, an impeller for driving coolant, and a control unit for controlling the motor. The control unit and the impeller are arranged at opposite ends of the motor. The motor includes a sleeve, a stator mounted around the sleeve, and a rotor rotatably received in the sleeve. The impeller is fixed to the rotor. A radial gap is formed between the sleeve and the rotor. The sleeve includes a plurality of ribs extending from an internal surface of the sleeve into the gap. At least a portion of the ribs of the sleeve guide the coolant towards the control unit to absorb heat generated by the control unit.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: June 19, 2018
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Hong Liang Zhang, Guan Yin Liang, An Bang Chen, Yan Ping Ren, Rui Feng Qin
  • Patent number: 9988129
    Abstract: A method provides power to a subsea equipment electrical system underwater, without a wet-mated electrical connection. The method includes temporarily coupling a rotary coupling element of a power source to the subsea equipment and turning that element to generate electric power on board the equipment. Subsea equipment that implements the method comprises: an on-board electric power generator connected to an electrical load such as a rechargeable battery to charge the battery when the generator is driven; and a rotary coupling element that is turned by an external drive to drive the generator. Alternative subsea equipment to implement the method comprises: a stator, but not a rotor, of an on-board electric power generator, which supplies current to the load when an externally-driven rotor is positioned adjacent to the stator and turned relative to the stator. A power source having a generator rotor is docked with the equipment for this purpose.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 5, 2018
    Assignee: Subsea 7 Limited
    Inventors: James Andrew Jamieson, Lee Wilson
  • Patent number: 9985501
    Abstract: A rotor body for a high-speed generator includes a rotor body with interior and exterior surfaces, a coolant inlet and outlet, and a rotor cooling path for actively cooling the rotor body. The coolant inlet and outlet extend between the interior and exterior surfaces. An interior segment of the rotor cooling path fluidly couples the coolant inlet and coolant outlet and is bounded by the rotor body interior surface. An exterior segment of the cooling path is bounded by the rotor body exterior surface and fluidly couples the coolant outlet an environment external to the rotor body.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 29, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Lubomir A. Ribarov, Robert S. Downing, Richard A. Himmelmann