Liquid Coolant Patents (Class 310/54)
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Patent number: 10724545Abstract: 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 fType: GrantFiled: December 8, 2016Date of Patent: July 28, 2020Assignee: SAFRAN ELECTRICAL & POWERInventors: Nicolas Stefanovic, Eric Wissemer, Jacques Deleris, Thierry Fontalbat
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Patent number: 10700579Abstract: 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: GrantFiled: July 20, 2016Date of Patent: June 30, 2020Assignee: GE Aviation Systems LLCInventors: Hao Huang, Xiaochuan Jia
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Patent number: 10700577Abstract: 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: GrantFiled: March 21, 2019Date of Patent: June 30, 2020Assignee: Honda Motor Co., Ltd.Inventor: Taro Takashima
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Patent number: 10700572Abstract: 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: GrantFiled: August 14, 2018Date of Patent: June 30, 2020Assignee: AUDI AGInventors: Korbinian Weber, Peter Juris, Florian Stadler
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Patent number: 10680497Abstract: 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: GrantFiled: September 1, 2015Date of Patent: June 9, 2020Assignee: Robert Bosch GmbHInventors: Armin Ploeger, Camilo Carrillo, Karsten Kirchhoff, Stephan Geise, Uwe Knappenberger
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Patent number: 10680478Abstract: 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: GrantFiled: November 28, 2018Date of Patent: June 9, 2020Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Andreas Huber, Zakaria El Khawly, Endre Barti, Anastasios Vichos
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Patent number: 10666115Abstract: 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: GrantFiled: November 16, 2017Date of Patent: May 26, 2020Assignee: AUDI AGInventor: Maximilian Schröder
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Patent number: 10660234Abstract: 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: GrantFiled: December 22, 2016Date of Patent: May 19, 2020Assignee: QUANTA COMPUTER INC.Inventors: Chao-Jung Chen, Yaw-Tzorng Tsorng, Po-Chen Liu, Wei-Chih Hung
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Patent number: 10637309Abstract: 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: GrantFiled: November 20, 2018Date of Patent: April 28, 2020Assignee: UBTECH ROBOTICS CORPInventors: Youjun Xiong, Yan Zhou, Youpeng Li, Wenhua Fan
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Patent number: 10630134Abstract: 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: GrantFiled: February 20, 2018Date of Patent: April 21, 2020Assignee: Ford Global Technologies, LLCInventor: Cyrille Goldstein
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Patent number: 10622869Abstract: 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: GrantFiled: August 29, 2018Date of Patent: April 14, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Kiyokami, Kazuki Iwakura, Hakuba Okuno
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Patent number: 10615663Abstract: 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: GrantFiled: February 9, 2018Date of Patent: April 7, 2020Assignee: DEERE & COMPANYInventors: Jonathan M. Peiffer, Robert K. Salamon
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Patent number: 10612551Abstract: 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: GrantFiled: May 11, 2012Date of Patent: April 7, 2020Assignee: Carrier CorporationInventor: Vishnu M. Sishtla
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Patent number: 10601298Abstract: 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: GrantFiled: August 28, 2015Date of Patent: March 24, 2020Assignees: Envision Energy (Denmark) ApS, ECO 5 GmbHInventors: Carsten Bührer, Hendrik Pütz
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Patent number: 10593442Abstract: 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: GrantFiled: November 8, 2018Date of Patent: March 17, 2020Assignee: Essex Group, Inc.Inventors: Matthew Leach, Christopher Richardson
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Patent number: 10587168Abstract: 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: GrantFiled: October 19, 2017Date of Patent: March 10, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Nishida, Manabu Yazaki, Nobuaki Hayashi
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Patent number: 10584566Abstract: 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: GrantFiled: February 22, 2019Date of Patent: March 10, 2020Assignee: Extract Production Services, LLCInventors: Mitchell Lee Crane, Jose Mauricio Oviedo Gualdron
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Patent number: 10587161Abstract: 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: GrantFiled: October 19, 2017Date of Patent: March 10, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Nishida, Manabu Yazaki, Nobuaki Hayashi
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Patent number: 10580555Abstract: 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: GrantFiled: October 26, 2017Date of Patent: March 3, 2020Assignee: JAPAN SUPERCONDUCTOR TECHNOLOGY INC.Inventor: Satoshi Ito
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Patent number: 10574117Abstract: 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: GrantFiled: June 18, 2015Date of Patent: February 25, 2020Assignee: KUBOTA CORPORATIONInventors: Kazuto Okazaki, Sumio Yagyu
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Patent number: 10566858Abstract: 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: GrantFiled: May 25, 2018Date of Patent: February 18, 2020Assignee: FANUC CORPORATIONInventor: Shinobu Takano
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Patent number: 10560002Abstract: 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: GrantFiled: March 29, 2017Date of Patent: February 11, 2020Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Myung Ki Sung, Edward Chan-Jiun Jih, Michael W. Degner
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Patent number: 10523094Abstract: 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: GrantFiled: March 15, 2017Date of Patent: December 31, 2019Assignee: KARMA AUTOMOTIVE LLCInventors: Xiaogang Wang, Zhong Nie, Yu Liu, Lei Gu
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Patent number: 10523084Abstract: 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: GrantFiled: February 18, 2018Date of Patent: December 31, 2019Assignee: Vitesco Technologies GmbHInventors: Holger Fröhlich, Robert Krause
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Patent number: 10505427Abstract: 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: GrantFiled: September 30, 2014Date of Patent: December 10, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Hirofumi Shimizu, Tomohiro Umino, Yasuyuki Kubota
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Patent number: 10479651Abstract: 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: GrantFiled: October 17, 2013Date of Patent: November 19, 2019Assignee: OTIS ELEVATOR COMPANYInventor: Zlatko Strbuncelj
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Patent number: 10476365Abstract: 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: GrantFiled: August 2, 2016Date of Patent: November 12, 2019Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGYInventors: Yohei Murase, Etsuya Yanase, Toshiyuki Yanamoto, Mitsuru Izumi, Motohiro Miki, Kota Yamaguchi
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Patent number: 10465679Abstract: 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: GrantFiled: October 10, 2014Date of Patent: November 5, 2019Assignee: Eaton Intelligent Power LimitedInventor: Nicholas John Hansen
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Patent number: 10461593Abstract: 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: GrantFiled: May 15, 2017Date of Patent: October 29, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Makoto Fujihira, Toshiyuki Nagumo
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Patent number: 10461599Abstract: 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: GrantFiled: August 10, 2015Date of Patent: October 29, 2019Assignee: NTN CORPORATIONInventors: Shiro Tamura, Takanori Ishikawa, Shinya Taikou
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Patent number: 10454329Abstract: 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: GrantFiled: April 2, 2015Date of Patent: October 22, 2019Assignee: DYNAMIC E FLOW GMBHInventor: Nikolaus Schweinert
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Patent number: 10441050Abstract: A mount for an electric motor, the mount comprising a sleeve for receiving a motor, the sleeve having a longitudinal axis extending between a first end and a second end, wherein the first end comprises a plurality of plurality of projections and the plurality of projections extend along the longitudinal axis. The sleeve may receive the motor via the first end or the second end. The plurality of projections may be spaced around a circumference of the sleeve. The plurality of projections may comprise a pattern of substantially constant frequency around the sleeve. The plurality of projections may be substantially V-shaped with the point extending along the longitudinal axis from the first end of the sleeve.Type: GrantFiled: October 19, 2016Date of Patent: October 15, 2019Assignee: Dyson Technology LimitedInventors: Jean-Baptiste Jerome Blanc, Craig Douglas, Antoine Francois Atkinson
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Patent number: 10447115Abstract: 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: GrantFiled: October 19, 2017Date of Patent: October 15, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Nobuaki Hayashi, Manabu Yazaki
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Patent number: 10442285Abstract: 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: GrantFiled: November 21, 2016Date of Patent: October 15, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke Tokozakura, Kazuya Arakawa, Takahiro Shiina
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Patent number: 10439477Abstract: A liquid cooling system for an electric motor includes: a pump for liquid to cool the electric motor; a heat exchanger that removes heat from the liquid; a manifold extending above a stator of the electric motor, the manifold receiving the liquid under pressure and having a first opening that directs a first liquid jet onto the stator; and a first tray above first end turns of the stator, the manifold having a second opening that directs a second liquid jet onto the first tray, the first tray having a third opening that performs gravity-fed liquid distribution onto the first end turns.Type: GrantFiled: January 31, 2014Date of Patent: October 8, 2019Assignee: Tesla, Inc.Inventors: Gary A. Pinkley, David F. Nelson, William R. Fong, Scott Heines, Edwin M. Pearce, Jr.
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Patent number: 10411562Abstract: A method for generating electrical power may include the steps of rotating a rotor of a generator at a speed in excess of about 12,000 revolutions per minute (rpm) to about 25,000 rpm and producing power with the generator at a rate in excess of about 800 kilowatts (kW). The generator has a power/weight ratio no smaller than about 3 kW/lbs. A rotor is cooled with cooling oil internally circulated through the rotor of the generator so that contact of cooling oil with external surfaces of the rotor may be precluded. The stator is also cooled with oil that is prevented from contacting the external surfaces of the rotor. Pressurized airflow may be produced in a gap between the rotor and a stator of the generator to preclude entry of cooling oil into the gap.Type: GrantFiled: January 14, 2016Date of Patent: September 10, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Cristian Anghel, Toren S Davis, Tom Phielix, Wayne Pearson
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Patent number: 10404140Abstract: A cooling structure of a drive motor may include a ring-shaped support member disposed on the inside of a housing and supporting the stator core of the drive motor, in which the support member may have a channel for cooling oil flow therein and nozzle openings for spraying the cooling oil to the stator core and a stator coil wounded around the stator core.Type: GrantFiled: December 9, 2016Date of Patent: September 3, 2019Assignee: Hyundai Motor CompanyInventors: Sanghoon Moon, Yeonho Kim, WoongChan Chae, YoungJin Shin, Hyoungjun Cho, Jung Shik Kim
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Patent number: 10381896Abstract: A cooling device for a vehicle, having an inner housing with an inner cooling wall, and an outer housing which surrounds the inner housing, is spaced apart via a cooling gap and has an outer cooling wall. A cooling volume for passage of a cooling fluid is formed between the inner cooling wall and the outer cooling wall. The inner cooling wall and/or the outer cooling wall furthermore have channel walls for dividing the cooling volume and guiding the cooling fluid. At least one clamping device is arranged around the circumference of a circumferential wall of the outer housing for introducing a deformation force into the outer housing in order to reduce the cooling gap by deforming the outer housing.Type: GrantFiled: November 16, 2017Date of Patent: August 13, 2019Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventor: Holger Hinrich
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Patent number: 10381900Abstract: An electric machine assembly having a main machine stator core having at least one stator post, a set of stator windings wound about the at least one stator post and having a first end and an opposing second end, a coolant inlet housing defining an inlet passage, a coolant outlet housing defining an outlet passage, proximate to the coolant inlet housing, and wherein the coolant inlet passage and the coolant outlet passage define a coolant circuit configured to receive a supply of coolant to remove heat generated in the set of stator windings.Type: GrantFiled: March 24, 2017Date of Patent: August 13, 2019Assignee: GE AVIATION SYSTEMS LLCInventors: Hao Huang, Xiaochuan Jia
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Patent number: 10361601Abstract: Disclosed herein is a rotor assembly, including a cylindrical housing coupled to an outer circumferential surface of a rotor body and configured to house a coil turn therein, a supporting unit disposed in the housing and configured to prevent the coil turn from being pushed in an axial direction of a rotor, and a vane ring coupled to one end of the housing and provided with blades guiding cooling fluid to the coil turn. The rotor assembly may include: coil turns each of which is formed by stacking conductors in a multilayer structure and includes a linear part interposed between teeth, and a curved part extending from the linear part and disposed on an outer surface of a spindle; first supporting blocks which are inserted into the curved part and disposed between the conductors; and a second supporting block which is disposed between the first supporting blocks.Type: GrantFiled: March 11, 2016Date of Patent: July 23, 2019Assignee: Doosan Heavy Industries Construction Co., LtdInventor: Kye Ha Hwang
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Patent number: 10361608Abstract: It includes an electrical rotating device, an electric power conversion device connected with the electrical rotating device, a housing that integrally houses the electrical rotating device and the electric power conversion device, and an attachment member that is attached to the housing, the electric power conversion device being attached thereto on an opposite side to the electrical rotating device. An electrically conductive connecting member connected with an electronic component that configures the electric power conversion device is attached to the attachment member in an electrically insulated state from the attachment member on an opposite side of the attachment member to the electrical rotating device. A cooling portion that cools the electronic component and the electrically conductive connecting member is provided on the attachment member on a side of the electrical rotating device.Type: GrantFiled: May 26, 2015Date of Patent: July 23, 2019Assignee: NISSAN MOTOR CO., LTD.Inventor: Kazuhiro Hasegawa
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Patent number: 10348146Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the cooling applied directly in the winding slots of the stator and in self contained loops such that no adverse loops are formed.Type: GrantFiled: July 13, 2012Date of Patent: July 9, 2019Assignee: LCDRIVES CORP.Inventors: Russel Hugh Marvin, Thomas R. Johnson
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Patent number: 10337513Abstract: A liquid pump has a housing with a suction connection, a pressure connection and a electric motor for rotationally driving a conveying device that has a suction inlet and pressure outlet which communicate with the suction connection and the pressure connection respectively. An electronic power unit for the electric motor is adjacent to the motor and extends transversely to the axis of rotation and is on the rear side of the partition wall of the housing. The suction inlet is arranged at a height smaller than an inner radius of an annular gap between the stator and rotor, whereas a rotor passage extends at a constant height, so that a liquid inducted by way of the suction connection is guided in part via the annular gap and undergoes a deflection at the partition wall, cooling the latter before it passes through the rotor passage to the suction inlet.Type: GrantFiled: December 9, 2016Date of Patent: July 2, 2019Assignee: FTE automotive GmbHInventors: Alexander Reul, Markus Dirauf
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Patent number: 10333362Abstract: Provided is an electric motor comprising: a stator comprising stator poles arranged radially and a rotor comprising rotor poles, each comprising: a substrate comprising a magnetically permeable material and at least a first magnet and a second magnet. The magnets can comprise a respective proximal end proximal to the stator and a respective distal end opposite the respective proximal end, and distal from the stator. A distance between respective proximal ends of the magnets can be equal to or greater than a distance between respective distal ends of the magnets. Each rotor pole also comprise first and second proximal cavities, each cavity extending from the respective proximal end of a magnet for a given length along about the circumferential direction and away from the proximal end of the other magnet. Sum of the lengths of the proximal cavities can be about equal to a width of each stator pole.Type: GrantFiled: October 2, 2015Date of Patent: June 25, 2019Assignee: ACCELERATED SYSTMES INC.Inventors: Tim Lambert, Robert Gordon Lankin, Stanley Baer
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Patent number: 10312760Abstract: A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the means defining cooling passageways disposed directly in the winding slots of the stator between and in engagement with the windings and stator laminations.Type: GrantFiled: July 13, 2012Date of Patent: June 4, 2019Assignee: LCDRIVES CORP.Inventors: Russel Hugh Marvin, Thomas R. Johnson
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Patent number: 10305352Abstract: Disclosed is a liquid filled electric motor to eliminate over-heating of direct drive motors and for preventing leakage of liquid from inside to the outside environment. The liquid filled electric motor is attached to the frame of a vehicle. The liquid filled electric motor includes a stationary axle attached to the frame of the vehicle, an angled hole configured on the stationary axle, a rotor for rotating around the stationary axle; a stator attached directly to the stationary axle, and one or more cables to energize the stator. The cables exit at an angle through the angled hole in the stationary axle to prevent capillary action for preventing leakage from inside to the outside environment. The level of the liquid is less than the full volume of the empty space in the electric motor.Type: GrantFiled: November 21, 2016Date of Patent: May 28, 2019Assignee: Falco eMotors Inc.Inventor: Rakesh K Dhawan
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Patent number: 10291105Abstract: A cooling apparatus of a drive motor is disclosed. An exemplary embodiment of the cooling apparatus may include a flow passage through which coolant flows. The flow passage is formed in the motor housing. A coolant inflow portion and a coolant outflow portion are connected with the flow passage. At least one penetration hole is formed in the motor housing and connected with the flow passage. A seal member is engaged with the penetration hole to vary a cross-sectional area of the flow passage.Type: GrantFiled: December 14, 2016Date of Patent: May 14, 2019Assignee: Hyundai Motor CompanyInventors: Dongyeon Han, Jungwoo Lee, Hyoungjun Cho
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Patent number: 10291094Abstract: A motor frame is disclosed. According to an exemplary embodiment in the present disclosure, a motor frame includes a main frame including a component of a motor provided therein; and a front cover and a rear cover covering an open front surface and an open rear surface of the main frame, respectively, and having cores into which the component of the motor is inserted, respectively, in which a region between the main frame and the cores is asymmetrical in a vertical direction.Type: GrantFiled: August 1, 2016Date of Patent: May 14, 2019Assignee: Hyundai Electric & Energy Systems Co., Ltd.Inventors: Yun Bum Park, Kwang Jin Han, Jin Hyuk Yoo, Young Hoon Jung
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Patent number: 10280924Abstract: A pump for fluids includes a pump housing, a power source enclosed within the housing, a drive shaft connected to the power source, at least one pump inlet arranged in the pump housing, a pump outlet arranged in the pump housing, a first impeller arranged within a first impeller chamber and rotated by the drive shaft, and a second impeller arranged within a second impeller chamber and rotated by the drive shaft. The pump is changeable between a first configuration in which the first and second impeller are arranged in parallel to provide a high pumping capacity, and a second configuration in which the first and second impeller are arranged in series to provide a pump with less pumping capacity.Type: GrantFiled: September 16, 2016Date of Patent: May 7, 2019Assignee: SULZER MANAGEMENT AGInventor: Nils Hökby
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Patent number: 10259310Abstract: A vehicle drive device that includes a body case that accommodates at least the rotary electric machine; an inverter case joined to the body case; and an inverter case cover joined to the inverter case; wherein an inverter housing that accommodates the inverter device is formed in a space enclosed by at least the inverter case; wherein a connection terminal electrically connecting the rotary electric machine and the inverter device is disposed in the inverter housing; wherein the case outer wall is formed by a first outer wall, a second outer wall, and the inverter case cover, the first outer wall being an outer wall of the body case, the second outer wall being an outer wall of the inverter case; and wherein a supply port and a discharge port for liquid refrigerant for cooling the inverter device are formed on the second outer wall.Type: GrantFiled: December 8, 2015Date of Patent: April 16, 2019Assignee: AISIN AW CO., LTD.Inventors: Hiromichi Agata, Tatsuyuki Uechi, Tomoyuki Suzuki