Pressure Pump Or Fan Patents (Class 310/63)
  • Patent number: 11293457
    Abstract: In example implementations, an apparatus is provided. The apparatus includes an accelerometer, a plurality of fan blades, a coil magnet and a processor. The accelerometer is coupled to a motor to measure an amount of vibration. The plurality of fan blades is coupled to the motor. Each one of the plurality of fan blades comprises a magnet. The coil magnet is coupled to a fan housing that encloses the motor, the plurality of fan blades and the accelerometer. The processor is communicatively coupled to the motor, the accelerometer, and the coil magnet. The processor activates the coil magnet to control a balance of the plurality of fan blades in response to an amount of vibration measured by the accelerometer that exceeds a threshold.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: April 5, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ai-Tsung Li, Chao-Wen Cheng
  • Patent number: 11264868
    Abstract: An electric motor assembly includes a stator, rotor, housing, rotatable shaft, and cooling fan. The stator and rotor are at least partly housed in the housing. The shaft is associated with the rotor to rotate about an axis. The cooling fan is fixed to and thereby rotates with the shaft to induce airflow within the housing. The cooling fan includes a wheel plate projecting radially relative to the shaft. The cooling fan further includes a plurality of radial blades that project axially from the wheel plate. The blades define a series of radial channels. The wheel plate defines an axial plate opening therethrough in alignment with a respective one of the channels.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: March 1, 2022
    Assignee: Nidec Motor Corporation
    Inventors: Richard L. Eason, Chetan O. Modi, Kevin L. West
  • Patent number: 11161232
    Abstract: A power tool includes a housing, a tool attachment, an output shaft, an electric motor, and an airflow channel. The housing includes an air inlet and an air outlet, and an airflow channel is formed between the air inlet and the air outlet. The electric motor includes an electric motor shaft, a stator and a rotor. The power tool further includes a thermal conduction member disposed between the rotor and the stator and configured to transfer heat between the rotor and the stator into the airflow channel. Further disclosed is an angle grinder. The power tool has good heat dissipation performance.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: November 2, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventor: Qingsong Yang
  • Patent number: 11125250
    Abstract: A fan device including an electric motor assembly (24, 26) designed to drive at least one blade wheel (34, 36) in a flow channel (18) provided axial to the blade wheel, an electronic assembly (38, 40), which forms commutator and/or ballast electronics for the electric motor assembly, is arranged in series with the electric motor assembly, and is produced on a circuit carrier, and a carrier unit (14) formed axially on or in the flow channel for retaining the electric motor assembly, wherein the carrier unit, which forms an inner circumference of the flow channel at least in sections, is made from a thermally conductive material, wherein the carrier unit has, on an outer segment (16) radially opposite to the flow channel, a mounting and cooling surface for interacting with the circuit carrier and/or power electronics components provided thereon in a heat-dissipating manner.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: September 21, 2021
    Assignee: EBM-Papst St. Georgen GmbH & Co. KG
    Inventors: Hansjoerg Berroth, Hans-Peter Krack, Bernd Maier
  • Patent number: 11121603
    Abstract: A circuit unit of a drive unit includes a plate-shaped heat sink that extends in a direction perpendicular to an axis of rotation of a motor, and a lower case arranged on a lower side of the heat sink. In the drive unit, a fastening member, which is formed on the lower case, is fastened to a housing, and a height of a fastening surface, which is located on an upper end of the fastening member, is positioned within a height range that spans from a lower surface to an upper surface of the heat sink.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 14, 2021
    Assignees: HONDA MOTOR CO., LTD., Mitsubishi Electric Corporation
    Inventors: Ryoji Tomokage, Masahiro Shimada, Seiichi Goto, Naoki Honishi, Takashi Omura
  • Patent number: 11073136
    Abstract: Provided a cooling arrangement for a generator including a stationary armature with an interior cavity bounded by an armature front plate, an armature back plate and a main shaft, which cooling arrangement includes a partition arranged to separate the interior cavity into an outer annular region adjacent to the armature and an inner annular region surrounding the main shaft, and wherein the partition includes a number of heat exchanger units; and a fan assembly arranged in the interior cavity to force hot air from the outer annular region through the heat exchanger units of the partition into the inner annular region and to expel cooled air from the inner annular region of the interior cavity. A wind turbine including such a cooling arrangement for cooling a generator and a method of cooling a generator is also provided.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: July 27, 2021
    Inventor: Giovanni Airoldi
  • Patent number: 11043876
    Abstract: A heat pipe assembly includes walls having porous wick linings, an insulating layer coupled with at least one of the walls, and an interior chamber sealed by the walls. The linings hold a liquid phase of a working fluid in the interior chamber. The insulating layer is directly against a conductive component of an electromagnetic power conversion device such that heat from the conductive component vaporizes the working fluid in the porous wick lining of the at least one wall and the working fluid condenses at or within the porous wick lining of at least one other wall to cool the conductive component of the electromagnetic power conversion device. The assembly can be placed in direct contact with the device while the device is operating and/or experiencing time-varying magnetic fields that cause the device to operate.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 22, 2021
    Assignee: General Electric Company
    Inventors: Karthik Bodla, Nathaniel Benedict Hawes, Brian Magann Rush, Weijun Yin, Andrew Thomas Cross, Corey Bourassa
  • Patent number: 10920787
    Abstract: A blower includes an impeller that is rotatable about a central axis extending in a vertical direction, a motor that rotates the impeller, and a base portion on which the motor is mounted. The impeller includes a cup portion that covers the motor, and blades extending radially outward from the cup portion and arranged in a circumferential direction. A gap is provided between the cup portion and the base portion such that the gap becomes narrower in an outward direction with increasing distance from an interior of the cup portion.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 16, 2021
    Inventors: Kunio Sakurada, Hiroshi Morishita, Akinobu Sumiji, Hirotaka Tamekuni
  • Patent number: 10851793
    Abstract: The present invention provides a fan motor which includes a housing, a stator disposed inside the housing, a rotor disposed inside the stator, a blade coupled to the rotor, and a printed circuit board disposed under the blade, wherein the printed circuit board includes a first mounting portion positioned inside a radius of the blade and a second mounting portion positioned outside the radius of the blade, and in which a component having a large height is mounted on the second mounting portion. Therefore, an advantageous effect that a component having a large height may be mounted within a limited design height.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: December 1, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Dae Gil Byeon
  • Patent number: 10731667
    Abstract: Disclosed is a rear grill assembly for a box fan including a rear grill, an electric motor support positioned on the rear grill by a positioning structure, and a frame arranged on the periphery of the rear grill by a snap structure. The frame includes a bottom cover, a top cover, and two side boards connected between the bottom cover and the top cover. The electric motor support is positioned on the rear grill by the positioning structure so that the electric motor support can be mounted easily and firmly. Thus, shortening the time for mounting the motor support, and improving the efficiency for mounting the rear grill assembly. Moreover, since the bottom cover, the top cover and the two side boards are assembled to form a frame, each part can be produced separately, whereby the difficulty in producing the frame is decreased to a certain extent.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 4, 2020
    Inventors: Runming Guo, Weiliang Liu, Fengxi Yan, Xusheng Zhang, Meihua Deng
  • Patent number: 10651707
    Abstract: A rotary electric machine that includes a rotor and a stator and is cooled by a stream of air generated by at least one fan. The fan is driven by a main shaft of the machine or by its own drive system. The fan includes main blades (33) for generating a stream of cooling air and, upstream of said main blades, tins which at least partially cover coil heads of the stator in the axial direction.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 12, 2020
    Inventors: Vit Zahradsky, Alexis Dutau
  • Patent number: 10624224
    Abstract: A device includes an interior which is enclosed by a housing. The housing includes an opening. A movable component closes the opening in the housing between the interior and an exterior of the housing. The passage points for movable components have hydrophobic surfaces. A device of this type is protected in a non-contacting manner against penetration and discharge of fluids.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: April 14, 2020
    Inventor: Martin Koepsell
  • Patent number: 10544787
    Abstract: A pump device includes a casing, an impeller, a base, and a motor. The casing includes a pump chamber, and an inlet and an outlet. The impeller is accommodated in the pump chamber. The motor is connected to the casing for driving the impeller to rotate and includes a rotor chamber for receiving a rotor. The base is disposed between the impeller and the motor and includes an accommodating groove having an inlet port in communication with the rotor chamber to allow fluid in the pump chamber to enter into the rotor chamber. In the pump device, precipitation has been performed to fluid in the accommodating groove before the fluid enters into the rotor chamber, thus the impurity particles can be prevented from entering into the rotor chamber, thereby prolonging the service life of the pump device.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: January 28, 2020
    Inventors: Min Li, Kok Ang Chong, Xiao Bo Xie, Shao Peng Mo
  • Patent number: 10450948
    Abstract: An exhaust gas turbocharger for a drive device, having a compressor that is capable of being electrically supported or driven by a media gap motor, the media gap motor having a rotor that is operatively connected to a bearing shaft of a compressor impeller of the compressor, and having a stator that surrounds the rotor at least in some regions in the circumferential direction relative to an axis of rotation of the bearing shaft. A power electronics for controlling at least one electrical winding of the stator surrounds the axis of rotation at least in some regions in the circumferential direction, a cooling jacket that stands in touch contact with the stator and/or with the power electronics being provided for cooling the stator and/or the power electronics.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: October 22, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Michael Baeuerle, Michael Nau
  • Patent number: 10428824
    Abstract: In accordance with embodiments of the present disclosure, a system may include a rotational component for moving air, a speed sensor, an electrical draw sensor, and a controller. The speed sensor may configured to determine a speed of the rotational component. The electrical draw sensor may be configured to determine an electrical draw of the air mover. The controller may be communicatively coupled to the rotational component, the speed sensor, and the electrical draw sensor, and may be configured to control the speed of the rotational component based on the speed and the electrical draw.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: October 1, 2019
    Assignee: Dell Products L.P.
    Inventors: Robert Curtis, Chris E. Peterson
  • Patent number: 10415590
    Abstract: An electric coolant pump includes an outer housing, a motor, an impeller, and an electrical control unit. The outer housing includes a first housing portion, a second housing portion, and a partition plate integrally formed. The partition plate is disposed between the first housing portion and the second housing portion. The motor is received in the first housing portion. The motor includes a sealing sleeve, a stator disposed on an inner wall surface of the outer housing, and a rotor rotatably received in the sealing sleeve. The impeller is driven by the rotor of the motor to drive a coolant to flow. The electrical control unit is received in the second housing portion and electrically connected to the motor. The electrical control unit and the impeller are respectively located at two opposite ends of the motor.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: September 17, 2019
    Inventors: Guan Yin Liang, Hong Liang Zhang, An Bang Chen, Yan Ping Ren, Rui Feng Qin
  • Patent number: 10355560
    Abstract: A motor structure includes a housing, a cover, an air guiding shell formed therein with an air collecting structure and mounted around the housing, and a cooling fan. The housing defines a plurality of first inlet holes and a plurality of outlet holes. The cover defines a plurality of second inlet holes. The air collecting structure defines a plurality of through holes aligned with the second inlet holes of the cover so as to provide a path for allowing one portion of the air current generated by the cooling fan to enter the housing for heat dissipation. One portion of the air guiding shell surrounds the first inlet holes of the housing to form another path for allowing another portion of the air current to enter the housing for heat dissipation.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 16, 2019
    Inventor: Wen-San Chou
  • Patent number: 10236748
    Abstract: An active part of an electric machine includes at least two teeth, each having a magnetically permeable material and protruding from a lateral surface of the active part in a radial direction. Each tooth has an open recess in a plane spanned by a substantially radial direction and a direction substantially along an axis of rotation. A winding groove is arranged between the two teeth substantially along an axis of rotation of the active part for receiving an electrical winding. Arranged at least partially in the open recess is a thermally conductive element having a thermally conductive material with a thermal conductivity which is greater than a thermal conductivity of the magnetically permeable material.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 19, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Marco Festa, Matthias Centner, Ilja Sabelfeld
  • Patent number: 10218245
    Abstract: A rotating machinery equipment is disclosed, including a rotating electrical machine having a stator (1) and a rotating shaft (7), whereon a rotor (11) is mounted. The machinery equipment further includes a cooling fan (23) comprised of a rotating impeller (33) mounted on the rotating shaft (7) for co-rotation therewith. Cooling gas passages (45, 47) are provided for delivering compressed cooling gas through the stator and rotor. The cooling gas is delivered by the impeller (33) into a cooling-gas distribution chamber (31). The pressure of the cooling gas in the cooling-gas distribution chamber generates an axial force balancing the axial thrust generated on the electrical machine by the cooling gas flow.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 26, 2019
    Assignee: Nuovo Pignone Srl
    Inventors: Ilia Oxman, Vittorio Michelassi
  • Patent number: 10199965
    Abstract: A magnetic sensor integrated circuit, a motor and an application apparatus. The magnetic sensor includes a magnetic sensor, a signal processing unit, an output control circuit and an output port. The magnetic sensor receives a constant current sense a magnetic polarity of an external magnetic field and output a differential signal. The signal processing unit amplifies the differential signal and eliminates an offset of the differential signal to obtain a magnetic field detection signal. The output control circuit control, at least based on the magnetic field detection signal, the magnetic sensor integrated circuit to operate in at least one a first state in which a current flows from the output port to the outside and a second state in which a current flows from the outside into the output port.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 5, 2019
    Inventors: Guang Jie Cai, Chun Fai Wong, Yue Li, Chi Ping Sun, Bao Ting Liu, En Hui Wang, Fei Xin, Shing Hin Yeung, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui, Shu Juan Huang
  • Patent number: 10125786
    Abstract: A fan includes an impeller and a metallic base portion. The base portion is arranged to be in thermal contact with a heat source. The impeller includes a resin portion including a plurality of blades, and a metal plate. In addition, the metal plate includes a flat plate portion arranged below the blades. A lower surface of the flat plate portion and an upper surface of the base portion are arranged axially opposite to each other with a gap intervening therebetween. An axial dimension of the gap is arranged to be 200 ?m or less at least at a portion of the gap. Heat of the heat source is transferred to the metal plate through radiation from the base portion. Then, an air current produced by the impeller absorbs the heat from the metal plate. The heat generated from the heat source is thus efficiently discharged to an outside.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: November 13, 2018
    Inventor: Takehito Tamaoka
  • Patent number: 10041494
    Abstract: The present application discloses an air compression apparatus mounted on a vehicle. The air compression apparatus includes a first air compressor configured to generate first compressed air, a first cooling fan configured to send first cooling wind in a first direction to cool the first air compressor, and a second air compressor aligned with the first air compressor in a second direction intersecting with the first direction. The second air compressor generates second compressed air.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: August 7, 2018
    Inventors: Toru Mizufune, Masaru Kuromitsu, Akira Takahashi, Tatsuo Miyauchi
  • Patent number: 10033246
    Abstract: A modular motor and magnetic bearing assembly comprising a positioning casing having a plane reference surface, an outer cylindrical reference surface, a central portion provided on an outer face with cooling liquid flow channels, and intermediate portions provided with openings for gaseous fluid entry and exit; a rotor presenting an inner cylindrical reference surface and a plane reference surface; an electric motor; radial magnetic bearings; an axial abutment; and auxiliary mechanical bearings. The modular assembly can then be incorporated in a main casing simply by sliding and it can be connected directly to a functional unit without reworking adjustments of the magnetic bearings.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: July 24, 2018
    Inventor: Eduardo Carrasco
  • Patent number: 9909591
    Abstract: A stationary portion of a blower fan according to a preferred embodiment of the present invention includes a stator and a stator holding portion to which the stator is fixed. A rotating portion of the blower fan includes an annular rotor hub portion arranged around a central axis; a rotor magnet arranged along a circumferential surface of the rotor hub portion, and arranged radially inside a stator; and an impeller including a plurality of blades arranged along a circumferential direction of the rotor hub portion. An upper end of the stator is arranged at a level lower than that of an upper end of the rotor magnet. The impeller is arranged axially above the rotor magnet and is arranged to extend radially outward. The blades are arranged axially above the stator.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: March 6, 2018
    Inventors: Takehito Tamaoka, Hiroaki Hirano
  • Patent number: 9849258
    Abstract: A respiratory apparatus comprising a base and removable chamber, wherein the chamber is configured to hold a supply of water and include a blower arrangement adapted to provide a supply of pressurized air or gas to the supply of water. In certain embodiments the respiratory apparatus includes a split motor, wherein the stationary components are located within a base and the rotating portions are located within a chamber.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: December 26, 2017
    Assignee: ResMed Limited
    Inventors: Paul Jan Klasek, Liam Holley, Quangang Yang, Steven Paul Farrugia, Timothy Tsun-Fai Fu, Robert Henry Frater
  • Patent number: 9819246
    Abstract: An electrical machine includes a fan guard having a first air flow channel. A stator assembly is coupled to the fan guard and includes a stator yoke having a cylindrical outer surface and a stator pole shoe. The stator pole shoe includes a plurality of stator poles coupled to the stator yoke. The stator assembly includes a second air flow channel defined between the stator yoke and an adjacent pair of the stator poles. A rotor assembly is positioned inside the stator assembly. The rotor assembly includes a rotatable shaft and a rotor. The rotatable shaft defines a rotation axis. A control electronics board includes a plurality of heat making components and is enclosed in a housing having a vented base and a closure. The housing is coupled to the stator assembly opposite the fan guard. The vented base includes a plurality of vent openings opened toward the fan guard.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: November 14, 2017
    Inventors: William Arthur Ziegler, Katie D. Hamilton, Paul Steven Mullin, Jeffrey Jay Long, Michael David Smith
  • Patent number: 9692268
    Abstract: A stator for a generator, comprises a coil support frame and a conductive wire unit arranged on the coil support frame, wherein the conductive wire unit comprises one basic conductive wire unit or a plurality of stacked basic conductive wire units, the basic conductive wire unit comprises a conductive wire layer and a magnetic-conducting sheet conformably stacked on and insulated from the conductive wire layer. A generator with closed-magnetic-path comprises a rotor and a stator, wherein the stator comprises the above conductive wire unit having a magnetic-conducting base plate, wherein the stator further comprises a magnetic yoke, the rotor comprises a transmission shaft, the conductive wire unit is fixedly connected in the magnetic yoke, at least a magnetic-conducting plate is coaxially connected on the transmission shaft, a magnet is connected on the magnetic-conducting plate, of which a magnetic pole is arranged towards the conductive wire unit.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: June 27, 2017
    Inventor: Gang Liu
  • Patent number: 9618011
    Abstract: An electric water pump includes an electric motor having a stator which generates an electromagnetic field by control signals supplied from a driver and a rotor which rotates by the electromagnetic field generated by the stator. An impeller is connected to and rotates with the rotor to circulate a coolant. An inside space of the electric water pump may include a motor room in which the electric motor is disposed, a volute room in which the impeller is positioned, and a pump driver room in which the pump driver is positioned.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: April 11, 2017
    Inventor: Bong Sang Lee
  • Patent number: 9553492
    Abstract: Provided is a paper shredder comprising a housing (6) and a paper shredder head (4), wherein a transmission mechanism (5) and a motor are provided in the paper shredder head (4); the motor comprises a motor body (1), the motor body (1) having an output shaft (12) and a motor housing (11) sleeve connected on the output shaft (12); the motor housing (11) is provided with a heat dissipation device, the heat dissipation device comprising an air intake device (2) and an air output device (3); the air intake device (2) has a cold air inlet and the air output device (3) has a hot air outlet; the air intake device (2) is provided on one side of the output shaft (12) and the air output device (3) is provided on the other side of the output shaft (12); at the position where the air intake device (2) is provided on the motor housing (11) there is an air intake hole (13) opened correspondingly to communicate with an inner chamber of the motor housing (11), and at the position where the air output device (3) is provided o
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: January 24, 2017
    Inventor: Ning Xu
  • Patent number: 9498908
    Abstract: An integral structure of a slim fan frame includes a metal baseplate, a bearing, a central plastic tube and a plastic flow passage sidewall which are connected to each other by integral forming. The method of manufacturing the integral structure is to simultaneously integrate the central plastic tube, the plastic flow passage sidewall, the metal baseplate and the bearing while injection molding the central plastic tube and the plastic flow passage sidewall.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 22, 2016
    Inventor: Ping-Ling Wang
  • Patent number: 9395124
    Abstract: An indoor device is provided. The indoor device may include a base to be fixed to an indoor wall; a fan disposed on the base that blows air; an orifice disposed upstream of the fan that guides air to the fan; a heat exchanger disposed upstream of the orifice that allows air to exchange heat with a refrigerant; and a magnet disposed at the fan and having magnetism.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: July 19, 2016
    Inventors: Kidong Kim, Yungkoo Lee, Dongsoo Moon, Jungwoo Lee
  • Patent number: 9257881
    Abstract: A rotating electric machine includes a stator, a rotor, and a coolant supply passage. Coils are wound on the teeth of the stator. The rotor is disposed coaxially with the stator, and has an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap formed therebetween. The coolant supply passage is disposed inside the rotor, and is configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap. A discharge groove is formed in the distal end face of the corresponding tooth. The discharge groove is inclined radially outwardly of the stator, from a coolant supply position as an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 9, 2016
    Assignee: Toyota Jodosha Kabushiki Kaisha
    Inventor: Shingo Fubuki
  • Patent number: 9158872
    Abstract: Induction motors may have a rotor core assembly that includes a plurality of rotor laminations having an arrangement of vents therein. The arrangement of vents may provide increased airflow through the induction motor without adversely affecting the electromagnetic properties of the motor. The arrangement of vents includes first and second circular rows of vents, wherein each vent of the first row may be radially aligned with a respective vent of the second row, and each radially aligned pair of first and second row vents may be radially aligned with a respective conductor bar slot in the rotor lamination. The number of rotor bar slots may equal the number of first row vents and the number of second row vents. Systems and methods of facilitating ventilation in an induction motor are provided, as are other aspects.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 13, 2015
    Inventor: Nicholas G. Lang
  • Patent number: 9154017
    Abstract: An electrical machine includes a stator, a rotor magnetically interacting with the stator, a shaft supported on the stator for rotation in a first direction of rotation and in a second direction of rotation which is opposite to the first direction of rotation, wherein the rotor is arranged on the shaft, a first axial fan mounted on the shaft on a side of the rotor for co-rotation with the shaft in the first direction of rotation and having freewheeling capability on the shaft in the second direction of rotation, and a second axial fan mounted on the shaft on the same side of the rotor as the first axial shaft for co-rotation with the shaft in the second direction of rotation and having freewheeling capability on the shaft in the first direction of rotation.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: October 6, 2015
    Inventors: Klaus Büttner, Norbert Wöhner
  • Publication number: 20150130386
    Abstract: Methods and apparatus for a motor generally comprise a motor shell, a drive unit, a motor electronics assembly configured to operate the drive unit, and a shaft coupled to the drive unit. The drive unit may comprise an axial design configured to increase the efficiency of the system. The motor may be totally enclosed, the shaft may be sealed using a labyrinth seal, and the motor electronics assembly may be contained within the motor shell. The motor may comprise shapes and materials to promote cooling by air flow and thermal conduction. The motor may further comprise a touch-sensitive interface, may operate at high speed in response to a signal, and may provide a single location for the connection of all inputs. A motor according to the present invention may have improved operating characteristics.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 14, 2015
    Inventors: Jared D. Zumstein, Stephen A. Zavodny, Luis D. Morales, Barry M. Benson, Rachele B. Cocks, Mark Klopp
  • Publication number: 20150130306
    Abstract: A motor includes an impeller including a plurality of blades arranged in a circumferential direction and fixed to a shaft between a cover portion and an armature. The cover portion includes at least one cover portion through hole arranged to axially overlap with the blades. A cylindrical portion includes at least one cylindrical portion through hole arranged to radially overlap with the blades.
    Type: Application
    Filed: April 7, 2014
    Publication date: May 14, 2015
    Applicant: Nidec Corporation
    Inventors: Jumpei KITAMURA, Kazuya ICHIMURA
  • Patent number: 9030064
    Abstract: The totally-enclosed fan-cooled motor includes the stator; the rotor; the drive side bracket; the counter drive side bracket; a pair of the bearings; the external fan that sends cooling air to the stator; the internal fan; the heat radiator that is arranged on an outer side of the drive side bracket and is mounted on the rotation shaft; the cover that contains a joint, which connects the rotation shaft extending to an outer side of the drive side bracket of the motor and a reduction gear, and is provided in parallel with the joint; and the ventilation path that is arranged between the drive side bracket and an end of the cover, and includes the outlet causes the cooling air induced by rotation of the heat radiator to flow to the heat radiator and discharges the cooling air outside the motor.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Seiji Haga, Kazuto Minagawa, Tadashi Maeda
  • Patent number: 9013077
    Abstract: To include a stator, a rotor that is arranged within the stator, a frame that encloses the stator and the rotor, a pair of bearings that respectively support a driving side and a driven side of a rotary shaft, and a fan that is mounted on the rotary shaft. A plurality of blades that extend in a radial direction of the rotor and are provided to stand at a substantially equal interval in a rotation direction of the rotor are formed in the fan. A cross section of each of the blades in a direction perpendicular to the rotor has an elliptical shape extending in the radial direction, and the cross section widens toward a side of the fan.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: April 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Shinsaku Maeda
  • Publication number: 20150104340
    Abstract: A furnace assembly comprising a non-condensing furnace with a draft inducer. The draft inducer includes a permanent magnet electrically commutated motor and a draft inducer blower fan. The motor includes a stator, a rotor, a motor cooling fan, and a controller. The rotor being rotatable relative to the stator, the fan being operatively coupled to the rotor such that rotation of the rotor causes rotation of the fan, the controller being configured to selectively operate the motor in first and second different torque ranges of the rotor, with the first and second torque range operating within a fixed percentage and within a fixed percentage of each other. The controller being configured such during normal operation, the motor is not operable at any torques between the first torque range and the second torque range except during transitionary periods.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Inventors: Bobby D. Garrison, Michael D. Smith, Jeffrey J. Long
  • Publication number: 20150061429
    Abstract: The blower comprises: a blower case; a motor case; and a shaft pierced through the both cases. A first communication hole, which is formed in one of axial end faces of the motor case, introduces a part of compressed air into the motor case. A second communication hole, which is formed in the other axial end face of the motor case, discharges the compressed air to outside of the motor case. An external guidance path introduces the discharged air toward an outside face of the motor case. By actuating a motor, the compressed air, which has been introduced from the blower case into the motor case via the first communication hole, is discharged from the second communication hole, and the discharged air is introduced by the external guidance path and blown out toward the outside face of the motor case.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventor: Takeki SAKAI
  • Publication number: 20150042189
    Abstract: An electric motor includes a stator, an armature rotatably received within the stator and having an armature shaft on which a commutator is mounted, and a brush assembly defining a first surface facing the stator and a second surface opposite the first surface. The brush assembly includes a brush card mount disposed around the commutator, brushes in sliding contact with the commutator to supply electric current to the commutator, and thermally-conductive brush holders. Each brush holder a base portion disposed substantially along a same plane as a surface of the brush card mount to form the first surface of the brush assembly, and a main portion protruding from the second surface of the brush assembly to house a respective brush. The base portions of the brush holders are exposed on the first surface of the brush assembly to transfer heat generated by the brushes through the first surface of the brush assembly.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: Black & Decker Inc.
    Inventors: Stephen P. Osborne, Daniel F. Heck, Colin M. Crosby, Ryan F. Schroeder, Barak N. Gohn, William D. Spencer
  • Patent number: 8946951
    Abstract: A fan (20) comprises a fan hub (22), fan blades (24) which are mounted on the fan hub (22), and a drive motor having an outer rotor (30), wherein the outer rotor (30) is arranged inside the fan hub (22). The outer rotor (30) is arranged in the fan hub (22) in such a way that the outer rotor (30) is supported in a radially outward direction on the radial outer wall (36) of the fan hub (22), by means of cooling fins (32) which are formed integrally with the fan hub (22).
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: February 3, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Samir Mahfoudh, Sebastian Hansen, Asli Arslan-Huerst
  • Patent number: 8937415
    Abstract: A rotary electric machine according to embodiments includes a tubular motor frame, a tubular motor cover, and a cooling fan. The motor frame includes therein a stator and a rotor. The motor cover houses the motor frame and includes a suction hole for cooling air at its counter-load side and an exhaust hole at its load side. Herein, the exhaust hole turns the exhaust direction of the cooling air to the counter-load side. The cooling fan sucks the cooling air from the suction hole into the motor cover and exhausts the cooling air from the exhaust hole to the outside of the motor cover.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: January 20, 2015
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Hirofumi Shimono
  • Patent number: 8933600
    Abstract: A brushless DC motor structure including a motor body, a controller, and a fan radiator. The fan radiator is mounted between the motor body and the controller to disperse heat from the motor body and the controller. The brushless DC motor structure increases air flow on the surface of the motor body and the controller by the fan radiator and speeds up heat dispersion, and meanwhile effectively controls the operating temperature of the motor body and the controller. Thus, the brushless DC motor structure has an excellent heat dispersion capability, and the failure rate thereof has been largely reduced.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 13, 2015
    Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.
    Inventors: Yonggang Liu, Songfa Tang
  • Patent number: 8922075
    Abstract: According to one embodiment, an electric motor includes a stator, a rotor, bearings and a rotor shaft, in a frame, supporting surfaces on the rotor, and a plurality of threaded holes in the frame, which are configured to receive bolts for pressing the support surfaces from outside.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuyuki Yagi, Satoru Murakami
  • Patent number: 8912695
    Abstract: A totally enclosed fan cooled (TEFC) induction motor or other type of induction motor auxiliary cooling system has a buffet thermal shroud that is oriented in opposed spaced relationship over existing motor housing cooling fins. An airflow channel is defined between the motor cooling fins and the shroud, for direction and passage of a cooling airflow. Tabs are oriented in the airflow channel between opposed cooling fins where they are in thermal and fluid communication with the cooling air flow. In some embodiments the tabs are shroud fingers that project inwardly from the shroud. The tabs or shroud fingers create turbulence in the cooling air flow that increases convective heat transfer efficiency and contact time between the cooling air and motor cooling fins. Tabs or shroud fingers also absorb heat from the cooling air flow. Shroud fingers also transfer that absorbed heat conductively to the shroud.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: December 16, 2014
    Assignee: Siemens Industry, Inc.
    Inventor: Emam Hashish
  • Publication number: 20140354092
    Abstract: A cooling fan is provided at an axial end portion of a rotor. The cooling fan generates a cooling air when rotated integrally with the rotor. On a stator core arranged at a position on a radially outer side of the rotor, a plurality of stator coils are arrayed in a circumferential direction of the stator core. Each stator coil includes a coil end that protrudes from an axial end surface of the stator core. A front housing covering the cooling fan includes: an exhaust port for passing the cooling air therethrough, at least part of the exhaust port being located at a position on a radially outer side of the coil end; and a recess portion opposed to the coil end in an axial direction.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 4, 2014
    Inventors: Kazuya HASEGAWA, Kazunori TANAKA
  • Publication number: 20140319940
    Abstract: Described herein is a technology for an electric motor system that reduces stress in motor shaft bearings. Furthermore, the electric motor system that provides an adequate heat ventilation is described herein.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Inventor: C. Michael Scroggins
  • Patent number: 8860265
    Abstract: An electric motor apparatus having an improved cooling system comprising a first compartment housing an electric motor mounted on a rotating shaft, a second compartment housing an electric circuit adapted to connect said electric motor to a power supply source, and a cooling system adapted to dissipate the heat generated by said electric motor apparatus. The cooling system comprises a fan mounted on said rotating shaft in a position adjacent to said second compartment and on the opposite side with respect to said first compartment and at least one finned heat exchanger adapted to dissipate the heat generated by said electric circuit inside said second compartment.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: October 14, 2014
    Assignee: ABB S.p.A.
    Inventors: Gianluigi Galli, Ivano Rovellini, Silvia Bono
  • Patent number: 8853901
    Abstract: A motor rotor system including: an axis of rotation, a rotor iron core mounted on the axis of rotation, a permanent magnet, a magnetic ring bracket, and a magnetic ring. The permanent magnet, the magnetic ring bracket, and the magnetic ring are mounted on the rotor iron core. The magnetic ring is sheathed on the magnetic ring bracket. The magnetic ring bracket is located at one end of the rotor iron core and connected with an end face of the rotor iron core. The motor rotor system has excellent batch-to-batch consistency, simple structure, and convenient installation. It is suitable for large batch production and can be controlled using sine-wave driving control methods with a position sensor.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: October 7, 2014
    Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.
    Inventor: Mingpan Pan