Liquid Coolant Patents (Class 310/54)
  • Patent number: 10840768
    Abstract: An electric motor includes a housing, a stator, and a rotor. The stator is composed of a stator core and a stator coil. The stator coil is composed of a plurality of individual coils provided to teeth of the stator core. The housing has lubricating oil supply portion, through which the lubricating oil is supplied onto coil ends of upper individual coils. A temperature detector for detecting the temperature of the stator coil is disposed at a position lower than an axis of a rotor and higher than an oil level of the lubricating oil accumulated in the bottom portion of the housing.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: November 17, 2020
    Assignee: NTN CORPORATION
    Inventor: Kenichi Suzuki
  • Patent number: 10840764
    Abstract: A motor cooling structure is provided. The structure includes a motor housing that has an inner wall, an outer wall, and a plurality of cooling fins which are disposed on the inner wall. An inlet boss is obliquely connected to the motor housing and an outlet boss is obliquely connected to the motor housing. The outlet boss is spaced apart from the inlet boss. Additionally, a first cooling channel and a second cooling channel are disposed between the inner wall and the outer wall, and are connected in parallel to the inlet boss and the outlet boss.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 17, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Woo Hyung Seol, Jae Won Ha, Heung Seok Seo, Yeon Ho Kim, Seokbin Hong, Hee Ra Lee, Yong Sung Jang
  • Patent number: 10822933
    Abstract: An electric submersible pump assembly with integral heat exchanger, high-speed self-aligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: November 3, 2020
    Assignee: Extract Management Company, LLC
    Inventors: Mitchell Lee Crane, Jose Mauricio Oviedo Gualdron
  • Patent number: 10819172
    Abstract: A rotor for a rotating electric machine is disclosed which includes a rotor yoke including annular magnetic steel sheets stacked in an axial direction having magnet slots into which magnets inserted, Each magnetic steel sheet includes first through-holes to form the first internal cavities; second through-holes, each having a shape fit for each second internal cavity and configured to form part of one of the second internal cavities; and third through-holes, each having a shape for communication between one of the first internal cavities and one of the second internal cavities and to form, with one of the second through-holes, part of the one of the second internal cavities.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: October 27, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Manabu Yazaki
  • Patent number: 10811939
    Abstract: In order to efficiently cool a stator and rotor of a rotating electrical machine, cooling oil is supplied by a pump in a pressurized state to a first reservoir portion provided in an upper portion inside a housing, and after the cooling oil is ejected from the first reservoir portion, the cooling oil is guided to a stator coil end cooling structure, and to a rotor bearing and rotor core cooling structure, using the weight of the cooling oil itself.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 20, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiaki Kitta, Koichi Ojima, Katsunari Takagi, Masaya Inoue, Hiroyuki Higashino
  • Patent number: 10797542
    Abstract: Stator of an electric machine, wherein the stator has: a magnetic core provided with a plurality of slots; a winding provided with a plurality of bars, each of which has a straight portion inserted inside a respective slot of the magnetic core and two curved sections that are part of two corresponding heads of the winding; and a cooling circuit that is designed to be flown through by a cooling fluid. The cooling circuit has: a plurality of main channels, which are formed inside the magnetic core beside, and radially more on the outside than the slots containing the bars; and a pair of end bodies, each of which is arranged around a corresponding head of the winding and contains a series of joining channels, which are connected to the ends of the main channels.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 6, 2020
    Assignee: FERRARI S.P.A.
    Inventor: Luigi Marino
  • Patent number: 10784748
    Abstract: A cooling structure of a rotary electric machine for power generation which includes a rotor and a stator includes a stator core which is formed in an annular shape to surround the rotor and has a plurality of slots arranged in a circumferential direction and extending from one end to the other end in a center axis direction, a conductor which is disposed in the slots and has a protruding portion protruding from the slots in the center axis direction, a cooling unit which cools the protruding portion. Opening portions of the slots are formed in an inner peripheral surface of the stator core, and the opening portions extend toward an upstream side in a rotation direction of the rotor at a time of regeneration from ends on the protruding portion side toward intermediate portions in the center axis direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Masashi Inoue
  • Patent number: 10784750
    Abstract: The present disclosure pertains to electric machines such as electric propulsion systems for aircraft that integrated cooling systems, and methods of cooling such an electric machine. Exemplary electric machines include an electric motor that has a stator, a rotor, and a drive shaft operably coupled to the rotor. Exemplary electric machines further include a motor cooling conduit that defines a pathway for conveying a cooling fluid through or around at least a portion of the electric motor, a casing assembly that circumferentially surrounds at least a portion of the electric motor, a casing assembly conduit integrally formed within at least a portion of the casing assembly which defines a pathway for conveying the cooling fluid through the at least a portion of the casing assembly, and a pump or compressor operably coupled to the drive shaft and configured to circulate the cooling fluid through the motor cooling conduit and the casing assembly conduit.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: September 22, 2020
    Assignee: General Electric Company
    Inventors: William Dwight Gerstler, Florian Stefan Hoefler, Mark Aaron Chan Chan
  • Patent number: 10784749
    Abstract: A cooling structure of a rotary electric machine for power generation which includes a rotor and a stator includes a stator core which is formed in an annular shape to surround the rotor and has a plurality of slots arranged in a circumferential direction and extending from one end to another end in a center axis direction, a conductor disposed in the slots, and a cooling unit which cools the conductor. Opening portions of the slots are formed in an inner peripheral surface of the stator core, the opening portions extend toward a downstream side in a rotation direction of the rotor at a time of regeneration from at least one end portions to intermediate portions in the center axis direction, and the cooling unit cools portions of the conductor which are located at the same positions as the intermediate portions of the opening portions in the center axis direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Masashi Inoue
  • Patent number: 10778053
    Abstract: To provide a rotor of a rotary electric machine having higher cooling performance than that of the related art. In a rotor structure of a rotary electric machine, on a surface on the side of a rotor core (20) of a first end surface plate (30), a plurality of grooves (33) that radially extend are provided, and a first annular groove (32) that annularly extends along a circumference of an insertion hole (31) into which a shaft (10) is inserted is provided. In addition, the first annular groove (32) is connected to radially inside end portions of the grooves (33) and a refrigerant supply hole portion (12) of the rotor core (20), and a depth of the first annular groove (32) is set to be larger than a depth of the grooves (33).
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: September 15, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuta Ito, Takuya Yoshizawa
  • Patent number: 10778056
    Abstract: A stator of an electrical generator includes a stator core including a plurality of stacked stator laminations and at least one end turn. At least one cooling passage provides a fluid flow path through a portion of the plurality of stator laminations to the at least one end turn. The at least one cooling passage includes at least one radial channel arranged in fluid communication with an axial channel. The at least one cooling passage is formed directly into the portion of the plurality of stator laminations.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: September 15, 2020
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 10770949
    Abstract: An electric machine with a housing, in which a stator having a plurality of winding heads is arranged. The housing has at least one cooling channel through which can flow a cooling medium. The cooling channel has at least one circular-shaped or circular-segment-shaped annular channel section, by way of which the cooling medium can be introduced to at least one winding head through at least one opening.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: September 8, 2020
    Assignee: AUDI AG
    Inventor: Albert Scharlach
  • Patent number: 10763728
    Abstract: A coolant distributor for a machine configuration. At least one coolant forward flow inlet opening and at least one coolant return flow outlet opening as well as multiple coolant forward flow outlet openings and multiple coolant return flow inlet openings are formed in a distributor body of the coolant distributor. The coolant forward flow inlet opening is fluidically connected by way of a forward flow chamber present in the distributor body to the coolant flow outlet openings, and the coolant return flow inlet openings are fluidically connected by way of a return flow chamber to the coolant return flow outlet opening and the coolant forward flow inlet opening is separated fluidically within the distributor body from the coolant return flow outlet opening, and wherein the distributor body is composed of two identical parts, which between them form the forward flow chamber and the return flow chamber.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 1, 2020
    Assignees: AUDI AG, Audi Hungaria Zrt
    Inventors: Jason Cox, Axel Pohlmann, Stefan Zucknik, Zsolt Barany
  • Patent number: 10756599
    Abstract: An oil circulation type motor may include an oil circulating device having cooling oil chambers which are formed along the circumference of a stator core and through which cooling oil pumped by an oil pump is introduced and discharged, wherein cooling oil is introduced into the cooling oil chambers, wets a stator coil wound around the stator core, and is then discharged from the cooling oil chambers.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: August 25, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jeong-Bin Yim, Jeong-Min Shin, Hyun-Jun Soh, Seong-Yeop Lim, Young-Jun Lee
  • Patent number: 10749411
    Abstract: A rotary electric machine includes a rotor, a stator which is disposed on an outer circumferential side of the rotor and includes a stator core and a coil, a first cooling mechanism which supplies a coolant to the coil from an outer circumferential side of the stator, and a second cooling mechanism which supplies a coolant to the coil from an inner circumferential side of the stator. The coil includes a plurality of segment cods, each including a pair of leg portions, and a connection portion connecting one end sides of the leg portions. A close-side coil end constituted by the connection portion and an open-side coil end constituted by the lea portions are provided on respective end sides of the stator core. A supply amount of the coolant supplied from the second cooling mechanism is larger to the close-side coil end than to the open-side coil end.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 18, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuta Ito, Tomokazu Naito
  • Patent number: 10742105
    Abstract: The present disclosure relates to cooling devices. The teachings thereof may be embodied in devices for cooling a rotor, which rotates about an axis, wherein the rotor is supported by a central rotor shaft. For example, in a cooling device, the rotor may be supported by a central rotor shaft and comprise a hollow space in the interior of the rotor shaft for accommodating coolant. It may include a first coolant line extending radially outwardly from the hollow space and an annular first distribution line fluidically connected to the hollow space via the first coolant line.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 11, 2020
    Assignee: VOIT PATENT GMBH
    Inventors: Anne Bauer, Klaus Dennerlein, Michael Frank, Joern Grundmann, Peter Kummeth, Peter van Hasselt
  • Patent number: 10734867
    Abstract: A high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology of the present invention includes a casing, a 3D phase change heat pipe, a stator core and a stator winding; the casing includes assembly passages for the 3D phase change heat pipe; the 3D phase change heat pipe assembly passages are symmetrically arranged on both sides of the casing body; a condensation section of the 3D phase change heat pipe is assembled in the assembly passages of the casing body, and an evaporation section is bonded to the stator winding. The present invention provides a high thermal conductivity stator component for vehicle motor with a simple structure, convenient installation, wide application and low cost.
    Type: Grant
    Filed: June 8, 2019
    Date of Patent: August 4, 2020
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Yong Tang, Yalong Sun, Wei Yuan, Longsheng Lu, Zongtao Li, Zhenping Wan
  • Patent number: 10724545
    Abstract: The invention relates to an electric centrifugal compressor, in particular for a turbine engine or aircraft, including an electric motor, the stator of which is supported by a casing and the rotor of which includes a shaft mounted inside the casing, driving a centrifugal compressor impeller, the casing having a double skin and including two substantially cylindrical, coaxial skins extending around the engine and defining between them an annular section suitable for the circulation of a first cooling air flow, one inlet of which is located at a first longitudinal end of the shaft and an outlet of which is connected to a second longitudinal end of the shaft, which supports the centrifugal compressor impeller, wherein it includes means (J) for collecting a second air flow at the outlet of the centrifugal compressor impeller, means for channelling the second air flow along the shaft up to the first end, and means for discharging the second air flow out of the casing in order to prevent same from mixing with the f
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: July 28, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: Nicolas Stefanovic, Eric Wissemer, Jacques Deleris, Thierry Fontalbat
  • Patent number: 10700577
    Abstract: There is provided a cooling structure of a power transmission device 1 that the power transmission device includes a tubular input shaft 3 and an output shaft 4R that is inserted into and disposed inside the input shaft 3, and that the power transmission device delivers power output from an electric motor (drive source) 2 to the input shaft 3 to the output shaft 4R via a deceleration mechanism T and a differential device D, wherein the output shaft 4R is disposed such that the output shaft 4R is offset relative to a shaft center of the input shaft 3 in a radial direction, and an oil supply pipe 12 is disposed in an axial direction in a wide space that is formed on a side opposite to an offset side of the output shaft 4R in a space S between the output shaft 4R and the input shaft 3.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: June 30, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventor: Taro Takashima
  • Patent number: 10700572
    Abstract: An electric machine having a stator arranged in a machine housing and a rotor mounted rotatably relative to the stator about an axis of rotation, wherein the machine housing includes at least one coolant inlet port for supplying coolant to the machine housing and at least one coolant outlet port for draining coolant from the machine housing. It is provided that the coolant inlet port empties into a distribution annulus and several housing coolant ducts emerge from the distribution annulus and extend beyond the stator, when viewed in the axial direction, and are connected fluidically, on their side facing away from the distribution annulus, to stator cooling duct inlets of stator cooling ducts formed in the stator, which pass entirely through the stator in the axial direction.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 30, 2020
    Assignee: AUDI AG
    Inventors: Korbinian Weber, Peter Juris, Florian Stadler
  • Patent number: 10700579
    Abstract: A generator includes a stator core having a set of stator poles formed by a post and a wire wound about the post to form a stator winding, with the stator winding having end turns, a rotor having a set of rotor poles and configured to rotate relative to the stator and a rotor channel for liquid coolant to flow through the rotor to a set of coolant apertures, and a set of rotor pole coolant channels aligned with and proximate to the set of rotor poles. The liquid coolant flow extracts heat from the generator.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 30, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Hao Huang, Xiaochuan Jia
  • Patent number: 10680497
    Abstract: The invention relates to a housing (10) for an electrical machine (50) and to an electrical machine (50) having such a housing (10). The housing (10) comprises an inner wall (12) and an outer wall (14), with a hollow space (16) therebetween for cooling the electrical machine (50) with a fluid. The housing (10) further has a sealing device (24, 26) on a front face (22, 23) of the housing (10). The housing is particularly characterised in that the sealing device (24, 26) comprises an annular sealing element (28) mounted between the inner wall (12) and the outer wall (14) so as to seal the front face, and in that the sealing device (24, 26) comprises a deflection ridge (30) which projects from the sealing element (28) in the axial direction of the housing (10) and is at least partially arranged between the walls (12, 14), the deflection ridge (30) being designed to lead a cooling fluid in the hollow space (16). A compact, economical and fluid-tight housing (10) can thus be advantageously provided.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 9, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Armin Ploeger, Camilo Carrillo, Karsten Kirchhoff, Stephan Geise, Uwe Knappenberger
  • Patent number: 10680478
    Abstract: An electrical machine has a rotor with a hollow shaft which in its interior delimits a hollow shaft axial channel that extends in the axial direction and into which a cooling fluid can flow during operation of the electrical machine. A laminated rotor core is fitted radially to the outside of the hollow shaft and has two axial end sides. An axial channel which is delimited by the laminated rotor core extends in the axial direction from one of the two end sides of the laminated rotor core to the other of the two end sides of the laminated rotor core and is connected in a fluid-conducting manner to the hollow shaft axial channel, so that, during operation of the electrical machine, the cooling fluid can flow from the hollow shaft axial channel to the end sides via the axial channel and can flow radially to the outside downstream of the axial channel owing to centrifugal force.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: June 9, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Andreas Huber, Zakaria El Khawly, Endre Barti, Anastasios Vichos
  • Patent number: 10666115
    Abstract: An electric machine provided with a stator and with a rotor arranged on a coolable shaft which is rotatably mounted with respect to the stator. The rotor is connected to the shaft by a thermosiphon device which is non-rotatably connected to the rotor and arranged on the front side of the rotor.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: May 26, 2020
    Assignee: AUDI AG
    Inventor: Maximilian Schröder
  • Patent number: 10660234
    Abstract: A hot swappable fan module includes an outer frame, a cooling fan, a fixing element, and a light guide assembly. The cooling fan is located on one side of the outer frame. The fixing element is operable to fix the outer frame and the cooling fan. The light guide assembly includes a light guide post, a first stopping portion, and a second stopping portion. The light guide post penetrates through the cooling fan and the outer frame. The first stopping portion is located on the light guide post, and abuts against one surface of the cooling fan opposite to the outer frame. The second stopping portion is arranged opposite to the first stopping portion, is light-transmittable, and is optically coupled to the light guide post, and abuts against one surface of the outer frame opposite to the cooling fan.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 19, 2020
    Assignee: QUANTA COMPUTER INC.
    Inventors: Chao-Jung Chen, Yaw-Tzorng Tsorng, Po-Chen Liu, Wei-Chih Hung
  • Patent number: 10637309
    Abstract: An inner rotor lamination for a permanent magnet direct current motor includes a yoke and a plurality of teeth connected to the yoke. Each of the teeth has a tooth body connected to the yoke and a tooth tip connected to a distal end of the tooth body. A winding slot is formed between each two adjacent tooth bodies. One tooth tip defines one or more first through holes adjacent to a radial end thereof, and one or more second through holes. Each of the one or more second through holes is located adjacent to one circumferential end of the at least one tooth tip.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: April 28, 2020
    Assignee: UBTECH ROBOTICS CORP
    Inventors: Youjun Xiong, Yan Zhou, Youpeng Li, Wenhua Fan
  • Patent number: 10630134
    Abstract: An electric machine is provided. The electric machine may include a shaft and a rotor. The shaft may define a rotational axis and a coolant passage that is transverse to the axis. The rotor may be assembled to the shaft and define an outer periphery, an inner periphery, and a medial section extending therebetween. The medial section may define a coolant channel that defines an inner edge and a plurality of elongated fins extending therefrom. The plurality of elongated fins may be configured to transfer heat from the outer periphery to coolant flowing from the coolant passage through the coolant aperture.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: April 21, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Cyrille Goldstein
  • Patent number: 10622869
    Abstract: A cooling system for a rotary electric machine which is provided in a vehicle for driving the vehicle. The cooling system includes: a first pump which is to be mechanically driven accompanying with running of the vehicle, to supply lubricant to the rotary electric machine; and a second pump which is to be driven by a second drive source that is other than a first drive source of the first pump, to supply the lubricant to the rotary electric machine. The first pump is configured to supply the lubricant, through a first passage, to an inside of a rotary shaft of a rotor core of the rotary electric machine. The second pump is configured to supply the lubricant, through a second passage, to a coil of a stator of the rotary electric machine.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: April 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroaki Kiyokami, Kazuki Iwakura, Hakuba Okuno
  • Patent number: 10615663
    Abstract: An electrical machine comprising a rotor; a stator comprising a lamination stack that includes a plurality of laminations aligned coaxially, the lamination stack defining a central bore sized to receive the rotor; and a casing defining a central bore sized to receive the stator, the casing comprising a cooling circuit intended for circulation of a cooling fluid, the cooling circuit comprising an inlet opening for letting cooling fluid in, the inlet opening positioned at the center of a lateral wall of the casing, and a first fluid passage and a second fluid passage originating from the inlet opening, extending from the center of a lateral wall of the casing towards a corresponding end of the casing.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: April 7, 2020
    Assignee: DEERE & COMPANY
    Inventors: Jonathan M. Peiffer, Robert K. Salamon
  • Patent number: 10612551
    Abstract: A compressor (22) has a housing assembly (40) with a suction port (24), a discharge port (26), and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working elements (44) are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. A gap (80) is between the rotor and stator. The gap is isolated (140, 142) from an outer portion (144) of the motor compartment. The outer portion is exposed to the stator. One or more passages (150) are positioned to draw fluid from the gap in the first condition.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 7, 2020
    Assignee: Carrier Corporation
    Inventor: Vishnu M. Sishtla
  • Patent number: 10601298
    Abstract: The present invention relates to a synchronous superconductive rotary machine with a superconductive rotor, a wind turbine, an assembly method and a repair method thereof. The rotor comprises a back iron connected to a thermally insulating support structure which is further connected to a base element. A coupling element is arranged on a peripheral surface of the base element for coupling to a matching coupling element located on a peripheral surface of a pole unit. The pole unit comprises a core element on which the coupling element is located and superconductive coils are wound on the core element. The pole unit is slid into position in an axial direction and fixed relative to the back iron by using fastening means. The base element, support structure and pole unit are wrapped in a thermal insulating laminate. This provides a simple and easy assembly and repair process that does require the rotor to be separated from the stator in order to replace a pole unit.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: March 24, 2020
    Assignees: Envision Energy (Denmark) ApS, ECO 5 GmbH
    Inventors: Carsten Bührer, Hendrik Pütz
  • Patent number: 10593442
    Abstract: Winding wire articles may include a conductor formed into a predefined shape having at least one bend. Additionally, a plurality of cavities may be formed within the conductor. Insulation may also be formed around the conductor.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: March 17, 2020
    Assignee: Essex Group, Inc.
    Inventors: Matthew Leach, Christopher Richardson
  • Patent number: 10587168
    Abstract: A rotary electric machine includes a rotor, a stator and a case. The rotor includes a rotor core, a plurality of permanent magnets disposed in the rotor core, and an end face plate disposed such that an inside surface thereof is in contact with an end face of the rotor core. The stator includes a stator core and a coil disposed in the stator core, and is disposed on an outer peripheral side of the rotor to face the rotor. The case accommodates the rotor and the stator, and includes a storage portion for storing liquid therein. A lower part of the rotor is immersed in the storage portion, and a liquid guide portion is provided on an outside surface of the end face plate to extend in a radial direction.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: March 10, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Atsushi Nishida, Manabu Yazaki, Nobuaki Hayashi
  • Patent number: 10584566
    Abstract: An electric submersible pump assembly with integral heat exchanger, high-speed self-aligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: March 10, 2020
    Assignee: Extract Production Services, LLC
    Inventors: Mitchell Lee Crane, Jose Mauricio Oviedo Gualdron
  • Patent number: 10587161
    Abstract: A rotary electric machine includes a rotor, a stator and a case. The rotor includes a rotor core, a plurality of permanent magnets disposed in the rotor core, and an end face plate disposed such that an inside surface thereof is in contact with an end face of the rotor core. The stator includes a stator core and a coil disposed in the stator core, and is disposed on an outer peripheral side of the rotor to face the rotor. The case accommodates the rotor and the stator, and includes a storage portion for storing liquid therein. A lower part of the rotor is immersed in the storage portion, and a liquid guide groove or a liquid guide hole is provided on an outside surface of the end face plate to extend in a radial direction.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: March 10, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Atsushi Nishida, Manabu Yazaki, Nobuaki Hayashi
  • Patent number: 10580555
    Abstract: Provided is a superconducting coil pre-cooling method for cooling a superconducting coil in a superconducting magnet apparatus including: the superconducting coil; a helium tank; a radiation shield; a vacuum case; and a refrigerator including a first cooling stage and a second cooling stage, a passage being disposed between the refrigerator and the radiation shield. The method includes: a supplying step of supplying a working medium in a gaseous state having a condensation point lower than a condensation point of nitrogen into a refrigerator surrounding tube; a cooling step of cooling the superconducting coil in a tank body by the working medium in the gaseous state that is cooled in the first cooling stage and further cooled in the second cooling stage after passing through the passage; and a discharging step of discharging the working medium that has cooled the superconducting coil in the tank body, out of the vacuum case.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: March 3, 2020
    Assignee: JAPAN SUPERCONDUCTOR TECHNOLOGY INC.
    Inventor: Satoshi Ito
  • Patent number: 10574117
    Abstract: To increase a thermal transmission amount between a tooth and an insulation member and reduce a thermal resistance. A stator (1) of an electric motor includes a yoke (2), a plurality of teeth (3) arranged in a circumferential direction of an inner circumference of the yoke (2), a winding wire (5) wound on the tooth (3), and an insulation member (4) disposed between the tooth (3) and the winding wire (5), the insulation member (4) being formed of elastic resin. A concave-convex portion (3a) is formed at least on a circumferential surface (A) among the circumferential surface and an axial surface (B) of the tooth (3). A concave-convex portion (4a) is formed on an inner surface of the insulation member (4), the concave-convex portion (4a) being configured to be fitted to the concave-convex portion (3a).
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: February 25, 2020
    Assignee: KUBOTA CORPORATION
    Inventors: Kazuto Okazaki, Sumio Yagyu
  • Patent number: 10566858
    Abstract: A stator frame includes a flow path which is formed spirally from one end side to the other end side in the axial direction of the stator frame between an inner circumferential surface and an outer circumferential surface while circling along a circumferential direction of the stator frame and within which a coolant is circulated, where a side wall portion which isolates the adjacent parts of the flow path, an inner wall portion which isolates the flow path from the inner circumferential surface of the stator frame and an outer wall portion which isolates the flow path from the outer circumferential surface of the stator frame are integrally formed.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 18, 2020
    Assignee: FANUC CORPORATION
    Inventor: Shinobu Takano
  • Patent number: 10560002
    Abstract: An electric machine is disclosed. The electric machine includes a stator core within a transaxle housing and having a channel-less outer surface portion. The electric machine also includes one or more layers of an oleophobic or hydrophobic patterned coating defining boundaries wrapping around a perimeter of the stator core, and one or more layers of an oleophilic or hydrophilic coating on the portion within the boundaries configured to direct coolant flow over the oleophilic or hydrophilic coating within the boundaries.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: February 11, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Myung Ki Sung, Edward Chan-Jiun Jih, Michael W. Degner
  • Patent number: 10523094
    Abstract: A power inverter with liquid cooled busbars includes multiple AC power outlets. The power inverter also includes a busbar having a busbar arm connected to one of the AC power outlets, and a busbar leg having a first end connected to the busbar arm. The busbar leg is at least partially situated in a cooling channel of the power inverter, which may be a built-in cooling channel or a detachable cooling channel. A second end of the busbar leg extends beyond the cooling channel and is exposed for electrical connection.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: December 31, 2019
    Assignee: KARMA AUTOMOTIVE LLC
    Inventors: Xiaogang Wang, Zhong Nie, Yu Liu, Lei Gu
  • Patent number: 10523084
    Abstract: A cooling system for an electric machine is disclosed. The cooling system includes at least one bearing bracket and at least one coolant distributor plate. The bearing bracket and the coolant distributor plate are designed to jointly form a cooling channel. The cooling channel includes multiple horizontal cooling channel sections which run parallel to an axis of rotation of the electric machine, multiple vertical cooling channel sections which run perpendicular to the axis of rotation of the electric machine, and multiple radial cooling channel sections which run around the axis of rotation of the electric machine. The three different cooling channel sections adjoin one another such that the cooling channel has a three-dimensional meandering profile at least in regions.
    Type: Grant
    Filed: February 18, 2018
    Date of Patent: December 31, 2019
    Assignee: Vitesco Technologies GmbH
    Inventors: Holger Fröhlich, Robert Krause
  • Patent number: 10505427
    Abstract: A rotating electrical machine system integrally includes a rotating electrical machine housed in a first chamber of a housing and a semiconductor module housed in a second chamber of the housing and electrically coupled to the rotating electrical machine. The rotating electrical machine includes a stator secured to an inner circumference surface of the first chamber and a rotor rotatably disposed with respect to the stator. The rotating electrical machine system further includes a cooler disposed between a bottom portion of the second chamber and the semiconductor module to cool the semiconductor module and the stator by coolant that passes through an inside of the cooler.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 10, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hirofumi Shimizu, Tomohiro Umino, Yasuyuki Kubota
  • Patent number: 10479651
    Abstract: An electric machine includes a rotor including a plurality of permanent magnets. The rotor is rotatable about a central axis of the machine. The machine further includes a stator having a stator hub and a plurality of stator windings positioned at the stator hub and located radially inboard of the plurality of permanent magnets. A plurality of fins extend radially inwardly from an inner surface of the stator hub.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: November 19, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Zlatko Strbuncelj
  • Patent number: 10476365
    Abstract: Provided is a rotary machine capable of increasing cooling efficiency while preventing an increase in the weight and cost of a rotor even in a case where the diameter of the rotor is increased.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: November 12, 2019
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGY
    Inventors: Yohei Murase, Etsuya Yanase, Toshiyuki Yanamoto, Mitsuru Izumi, Motohiro Miki, Kota Yamaguchi
  • Patent number: 10465679
    Abstract: An electric motor driven pump assembly configuration that includes an electric motor, a hydraulic pump driven by the electric motor is provided. The hydraulic pump is driven by the electric motor to convert electrical power into hydraulic power. A multi-inlet hydraulic pump enhances cooling flow through a pump case of the assembly and also enhances cooling flow for cooling the electric motor and corresponding drive/control components.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: November 5, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventor: Nicholas John Hansen
  • Patent number: 10461599
    Abstract: An automotive motor drive unit includes a breather passage (Q) provided in casings (21a, 21r, 22a, 22r) that form an outer shape of the automotive motor drive unit; an entrance port (48m) that is provided at an inlet side of the breather passage and that connects with an internal space (L) defined by the casings; an exit port (67) that is provided at an outlet side of the breather passage and that connects with a space outside the casings; and obstacles (24, 25, 26) standing to form an inner wall of the breather passage and preventing lubrication oil in the internal space from proceeding straight ahead via the entrance port toward the exit port.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: October 29, 2019
    Assignee: NTN CORPORATION
    Inventors: Shiro Tamura, Takanori Ishikawa, Shinya Taikou
  • Patent number: 10461593
    Abstract: The rotary electric machine includes a stator, a passage, an inlet opening, an outlet opening, and a partition. The stator has an outer periphery. The passage is provided around the outer periphery. A cooling medium is to flow through the passage. The inlet opening is connected to the passage. The cooling medium is to be supplied to the passage via the inlet opening. The outlet opening is connected to the passage. The cooling medium is to be discharged from the passage via the outlet opening. The inlet opening and the outlet opening divide the passage into a longer passage and a shorter passage shorter than the longer passage. The partition is provided in the shorter passage and comprises an elastic material to contact with an inner surface of the shorter passage so as to restrict a flow of the cooling medium.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: October 29, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Makoto Fujihira, Toshiyuki Nagumo
  • Patent number: 10454329
    Abstract: An electrical hollow conductor (1) in the shape of a tubular body (2) having a hollow interior (3) for continuously winding an electromagnetic coil, wherein the body (2) comprises an electrically conductive material, has an outside diameter and an inside diameter, wherein a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1, and is coated with an electrically insulating layer (4) on an outer casing surface of the body (2) and wherein the interior (3) is configured so that it hydraulically or pneumatically connects a first open end of the body (2) and a second open end of the body (2).
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: October 22, 2019
    Assignee: DYNAMIC E FLOW GMBH
    Inventor: Nikolaus Schweinert
  • Patent number: 10442285
    Abstract: A cooling apparatus for a hybrid vehicle is provided with an oil circulating circuit supplying oil discharged from an electric oil pump to a first motor, a second motor, an inverter, and a lubrication-required part, and the oil circulating circuit includes: a first circuit supplying the oil that is discharged from the electric oil pump, and is cooled by an HV radiator to the inverter, the first motor, and the second motor; and a second circuit supplying the oil that is discharged from the electric oil pump without being cooled by the HV radiator to the lubrication-required part.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: October 15, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Tokozakura, Kazuya Arakawa, Takahiro Shiina
  • Patent number: 10447115
    Abstract: A rotary electric machine includes a rotor, stator and a motor case. The rotor includes a rotor core, plural magnets disposed in the rotor core, and an end face plate disposed such that an inside surface thereof is in contact with an end face of the rotor core. The stator includes a stator core and a coil. The stator is disposed on an outer peripheral side of the rotor to face the rotor. The motor case accommodates the rotor and the stator and has a storage portion for storing liquid therein. A lower part of the rotor is immersed in the storage portion, and the motor case has an inclined wall extending from an upper side toward the permanent magnet or a peripheral part of the permanent magnet and guiding liquid scraped upward by the rotor to the magnet or the peripheral part of the magnet.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 15, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Nobuaki Hayashi, Manabu Yazaki