Suction Pump Or Fan Patents (Class 310/62)
  • Publication number: 20090284087
    Abstract: A starter generator which comprises a rotor having a cuplike-shaped rotor yoke and magnets attached to an inner periphery of the rotor yoke, a stator mounted on a stator bracket and a protecting cover covering said rotor and stator, in which a hermetically sealed casing is constituted by said protecting cover and stator bracket, wherein a plurality of fans are provided on an outer surface of a bottom wall portion of said rotor yoke, a plurality of vent holes are provided through said bottom wall portion, said plurality of fans constitute a centrifugal fan which draws out air inside the rotor yoke through said vent holes and sends the air to an outer periphery of the rotor yoke, and a guide surface which guides the air sent to the outer periphery of the rotor yoke to a space inside the rotor yoke is provided on the stator bracket.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 19, 2009
    Applicant: Kokusan Denki co., Ltd.
    Inventors: Masakatsu TAKAHASHI, Kazuyoshi Kishibata
  • Patent number: 7615896
    Abstract: An integrated blower and motor is provided. The integrated blower and motor can include a rotor and a stator, wherein the rotor is disposed with a central bore of the stator. The integrated blower and motor includes a fan, wherein the fan can be attached to the rotor. According to the embodiments described herein, an integrated blower and motor is provided that is compact and uses less space.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: November 10, 2009
    Assignee: Glacier Bay, Inc.
    Inventors: G. Kevin Alston, Machiko Taylor
  • Patent number: 7615897
    Abstract: A motor cooling device including an impeller 2, supported by a rotary shaft 1a of a motor 1, and a fan cover 4, which encases a front portion and a peripheral portion of the impeller 2 and has an air inlet 5 in a front surface and an air outlet 6 in the rear. A constricting flow space S1 is arranged at an exit side of the impeller 2 and defined by a motor end surface 1b, which includes an entrance in the proximity of a rear surface of a vane 3 of the impeller 2 and a circumferential surface expanding radially and diagonally in the rearward direction, and a space formation member 10, which is formed on an inner surface of the fan cover 4.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: November 10, 2009
    Assignee: Daikin Industries, Ltd.
    Inventor: Kanjirou Kinoshita
  • Publication number: 20090273246
    Abstract: The invention relates to an electrical machine (1) having a stator (4) and a rotor (3), with the rotor (3) having a plurality of axially arranged cooling channels (8) and a first (5a) and a second (5b) end face, and a fan unit (6) being arranged adjacent to each end face and comprising at least two 10 fan segments (7), with one fan segment (7) in each case being associated with one cooling channel (8) and being arranged alternately adjacent to the first (5a) and the second (5b) end face, and with the fan segment (7) having at least one air guide channel (7a) and at least one air guide wall (7b).
    Type: Application
    Filed: January 29, 2007
    Publication date: November 5, 2009
    Applicant: Siemens Aktiengesellschaft
    Inventor: Sebastian Weiss
  • Patent number: 7598636
    Abstract: An alternator of the present invention is mounted on an automotive vehicle to supply electric power to an on-board battery and electric loads. The alternator is composed of a housing, a stator fixedly held in the housing, a rotor rotatably supported in an inner bore of the stator, and other associated components. Alternating current generated in the stator is rectified into direct current and supplied to the on-board battery and electric loads. A cooling fan is connected to an axial end surface of the rotor. The cooling fan includes an annular portion extending in the axial direction to overlap with a bearing holder formed in the housing. A small annular gap is made between the annular portion and the bearing holder. Plural projections extending from the annular portion in the outer radial direction are formed integrally with the annular portion. Foreign particles are prevented from entering into the bearing by the annular portion having the projected portions.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: October 6, 2009
    Assignee: Denso Corporation
    Inventor: Shigenobu Nakamura
  • Publication number: 20090243407
    Abstract: In a controller-integrated electric rotating machine provided with a power circuit unit and a control circuit unit, a cooling property is improved so that the control circuit unit does not impair a flow of air for cooling the power circuit unit. A power circuit unit (30) having switching elements (30a, 30b) for converting DC power to AC power for supplying the AC power to an electric rotating machine (2), a control circuit unit (32) for controlling the switching elements (30a, 30b) of the power circuit unit (30), and a rotational position detection sensor (4) arranged on a rotating shaft (22) for detecting the rotation of the rotating shaft (22) are provided, and the control circuit unit (32) is disposed at a position where the power circuit unit (30) is not disposed when viewed in the direction of the rotating shaft, and is disposed at a position shifted radially outward so as not to be overlapped with the rotational position detection sensor (4) when viewed in the direction of the rotating shaft.
    Type: Application
    Filed: February 13, 2007
    Publication date: October 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masaki Kato, Yoshihito Asao
  • Publication number: 20090230791
    Abstract: The invention concerns an electric drive unit with a steering motor and a propulsion motor which are arranged co-axially with one another and which, respectively, steer a wheel of the vehicle or drive it in the sense of propulsive movement. A first motor (1) has a hollow drive shaft (2), through which passes a second drive shaft (3) of the second motor (4). The second drive shaft (3) also extends through an outer wall (5) of the drive unit and, on the outside (6), is connected rotationally fixed to a fan wheel (7), such that air for cooling is blown outside along the housing of the drive unit.
    Type: Application
    Filed: September 23, 2006
    Publication date: September 17, 2009
    Applicant: ZF Friedrichshafen AG
    Inventors: Stephan Scharfenberg, Roland Altvater, Kai Heinrich, Markus Nold, Torsten Hering
  • Publication number: 20090220361
    Abstract: Arrangement for cooling a compressor comprising a housing (Ia, Ib) with an inlet (13) and an outlet (14) and enclosing in its volume (12) a stator including stator winding (2) and stator iron (3) of an electric motor, which drives a rotor (9) with a shaft (6). The invention is characterized in that the volume (12) is arranged separated from the rotating parts (9, 6) in a sealed manner.
    Type: Application
    Filed: September 13, 2006
    Publication date: September 3, 2009
    Applicant: lIND fINANCE & Development AB
    Inventor: Bjorn Lind
  • Patent number: 7582997
    Abstract: An arrangement for conveying fluids has a fluid pump (174) having a rotatably journaled pump wheel (172) that is joined to a first permanent magnet (186) and an electronically commutated internal-rotor motor (152) having a stator (154) and a rotor (156), as well as a shaft (160) associated with the latter, which shaft is journaled rotatably relative to the stator (154) . The arrangement also has a second permanent magnet (184) joined nonrotatably to the rotor (156) , which magnet coacts with the first permanent magnet (186) to serve as a magnetic coupling. A separating can (170, 180, 188) hermetically separates the first permanent magnet (186) arranged inside the separating can, from the second permanent magnet (184) arranged outside the separating can. A fan wheel (218) mounted on the motor shaft, provides cooling air.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: September 1, 2009
    Assignee: EBM-PAPST St. Georgen GmbH & Co. KG
    Inventor: Francisco Rojo Lulic
  • Patent number: 7570488
    Abstract: An automotive alternator rectifier including a terminal connection portion configured by connecting a terminal leading out of first unidirectional conducting element bodies disposed on a surface of a first heat sink so as to be spaced apart or a terminal leading out of second unidirectional conducting element bodies disposed on a surface of a second heat sink so as to be spaced apart with a circuit board terminal is disposed between a rotor and a circuit board. For this reason, temperature increases in the first unidirectional conducting element bodies and the second unidirectional conducting element bodies can be suppressed and workability when connecting the terminal connection portion is improved.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: August 4, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Atsushi Oohashi, Masaki Katoh
  • Publication number: 20090184601
    Abstract: The invention concerns a polyphase stator (5) for a with rotating electrical machine claw-pole rotor comprising five or seven phases (132), a stator body having internally a plurality of notches delimited by teeth, each phase including at least one winding, each winding including coils with multiple turns, each coil enclosing a single tooth (61). The invention also concerns an alternator or an alternator starter comprising such a stator.
    Type: Application
    Filed: September 11, 2006
    Publication date: July 23, 2009
    Inventors: Jean-Marc Dubus, Arnaud De Vries, Denis Even, Jean-Claude Mipo
  • Publication number: 20090184599
    Abstract: An alternator for a vehicle includes: a stator that is configured by a concentrated winding system in that a stator coil for a single phase is wound on a single pole; and a rotor with 16 or more poles, that is disposed to face the stator so as to be rotatable with a gap intervening therebetween, wherein a pole ratio of the rotor and the stator is 2:3.
    Type: Application
    Filed: November 5, 2008
    Publication date: July 23, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Hiroshi Kanazawa, Shinjiro Watari, Masahiko Honma
  • Publication number: 20090184674
    Abstract: A drive apparatus for a washing machine includes an electric motor, a drive shaft connected to the electric motor for rotary drive purposes and electronics for controlling operation of the electric motor. In order to achieve a compact construction, the electric motor and the electronics are integrated in a common unit. In order to increase operational reliability of the drive apparatus together with a simple construction, the common unit has a wall which is thermally coupled both to the electric motor and to the electronics and serves to dissipate heat. The electronics have a temperature sensor for detecting the temperature of the wall. Both the temperature of the electric motor and the temperature of the electronics can be monitored with this one temperature sensor.
    Type: Application
    Filed: January 21, 2009
    Publication date: July 23, 2009
    Applicant: DIEHL AKO STIFTUNG & CO. KG
    Inventors: Martin Weinmann, Alexander Muller
  • Publication number: 20090184593
    Abstract: A vehicle alternator is disclosed as having a rotor including magnetic pole pieces, each having claw-like magnetic pole fingers, a field coil wound on boss portions of the magnetic pole pieces, and cooling fans fixedly mounted on the magnetic pole pieces, respectively. Each cooling fan includes a central disc portion, a plurality of fan base portions formed on the central disc portion, and fan blades standing upright from the fan base portions in an axially outward direction, respectively. The central disc portion has an outer circumferential periphery formed with a plurality of cutout portions to be contiguous with roots of the fan base portions, respectively, and placed in areas radially inward of the fan blades, respectively. Each cutout portion is so placed to be perpendicular to the radial direction on which each claw-like magnetic pole finger is oriented.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 23, 2009
    Applicant: DENSO CORPORATION
    Inventor: Hiroo Kaizu
  • Publication number: 20090179507
    Abstract: According to an aspect of the invention, there is provided a power tool including: a commutator motor including a rotor and a stator having a substantially cylindrical stator core; a fan provided to face one axial end of the stator core so as to be rotatable coaxially with the rotor; and a stator coil bundle fixed to an inner peripheral surface of the stator core, the stator coil bundle having a coil end portion that protrudes more than the stator core in a rotational axis direction of the rotor, wherein a minimum internal diameter of the coil end portion is smaller than a maximum external diameter of the fan, and wherein the coil end portion has a fan facing portion that faces the fan along a direction perpendicular to the rotational axis direction.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 16, 2009
    Inventor: Hideyuki TANIMOTO
  • Publication number: 20090179510
    Abstract: A rotating electrical machine main body 40 includes a rotor 4 having a fan, a stator 1, and housings 2, 3. An inverter unit 30 includes a case 14 and a plurality of switching semiconductor devices 15. The rotating electrical machine main body 40 and the inverter unit 30 are coupled with each other when the case 14 is connected to the housing 3. A cooling air circulated by rotation of a fan 12a cools the inverter unit 30 before flowing into the housing. Part of the case 14 is disposed between the rotating electrical machine main body 40 and the switching semiconductor devices 15, preventing thermal radiation radiated (or irradiated) from the rotating electrical machine main body 40 from reaching the switching semiconductor devices 15.
    Type: Application
    Filed: December 5, 2008
    Publication date: July 16, 2009
    Applicant: Hitachi, LTD.
    Inventors: Kenichi Yoshida, Tokihito Suwa, Kazuto Oyama, Hisaya Shimizu, Yosuke Umesaki
  • Patent number: 7545061
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking an outside air is formed on an axial wall of the cover; and by rotation of the cooling fan, the outside air flows from the ventilation hole with respect to the switching elements, and goes through a suction port and is discharged through a discharge port.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: June 9, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Publication number: 20090142204
    Abstract: In an axial fan including a motor, a substrate that connects the ends of a plurality of coils is disposed at a position axially under the bottom portion of a case with an axial gap therebetween. A spacer is interposed between the substrate and the bottom portion, and the substrate is fixed to the spacer. A plurality of through holes provided in the bottom portion are disposed in axial alignment with a plurality of through holes provided in the spacer. An air flow produced by rotation of an impeller at least partially passes through the interior of the case to be discharged to the outside of the case through the through holes in the bottom portion and in the spacer so that heat generated inside the motor can be efficiently transferred to the outside of the case.
    Type: Application
    Filed: June 11, 2008
    Publication date: June 4, 2009
    Applicant: NIDEC CORPORATION
    Inventors: Masato Yamamoto, Kenichi Tanaka, Ken Adachi
  • Patent number: 7541702
    Abstract: A brushless fan motor, in which cooling effect on a stator may be enhanced, is provided. A center through hole is formed in a center of a bottom wall portion of a first brushless fan motor. Vane portions are formed on an inner wall portion of the brushless fan motor and are formed into a shape which allows ambient air to be drawn in through the center through hole. Through holes are formed in an end plate portion of the first brushless fan motor in order to introduce the ambient air, which has been drawn in through the center through hole, inside a rotor cover.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: June 2, 2009
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Naoki Murakami, Hiromitsu Kuribayashi, Katsumichi Ishihara
  • Patent number: 7537439
    Abstract: A portable self-priming transfer pump comprising a one piece unitary housing, comprised of a first portion that houses a motor, a second casing portion within which is formed a pump cavity, and a handle; and a one piece cover fitted to the outboard end of the second portion of the housing.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: May 26, 2009
    Assignee: Liberty Pumps Inc.
    Inventor: Donald M. Pohler
  • Publication number: 20090121575
    Abstract: The invention relates to a generator, especially for motor vehicles, which comprises a generator stator (36) having winding slots and subcoils (10 21) lying in said winding slots (35). The subcoils (10 21) are connected to each other via a bridge circuit (3) in order to produce a DC voltage from a multiphase AC voltage produced by a rotary field. The generator is configured as a multiphase generator (30), preferably a three-phase or six-phase generator (30). The aim of the invention is to reduce magnetic nose and torque ripple merely by modifying the subcoil wiring. For this purpose, the subcoils (10 21) are connected to an angular ring and the bridge circuit (3) connected to the ring has a lower phase number than corners of the angular ring circuit (1).
    Type: Application
    Filed: January 2, 2007
    Publication date: May 14, 2009
    Inventor: Gert Wolf
  • Patent number: 7523843
    Abstract: An apparatus converts rotary motion of a motor drive shaft into oscillatory motion of a work piece, for example, in a power tool. The apparatus comprises a planetary gear assembly connected to the motor for rotating an output gear. The output gear meshes with a drive gear including a drive pin. The drive pin fits in a yoke slot for reciprocation of the yoke upon rotation of the drive gear. The yoke is operatively connected to the work piece. An air flow system cools the power tool housing. The housing has an inlet aperture in the handle portion and an outlet aperture for placing the interior of the housing in communication with the atmosphere. A wall integral with the handle portion engages the body of the motor housing between a first end and openings in the body.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: April 28, 2009
    Assignee: Alemite, LLC
    Inventors: Jerry D. Shew, David Khiam Keong Sia, Raymond Wai Man Wong
  • Patent number: 7518271
    Abstract: An electrical machine, in particular a rotary current generator for motor vehicles, is proposed which has a housing (13) in which a stator (16) is retained, such that a coolant can flow around the outside of the stator (16) from one of its axial face ends (57) to a circumferential region of the stator (16), defining a flow cross section of the flow course through the stator (16) and the housing (13). The flow course is defined toward the stator by outer stator teeth (62) located on the outer circumference of the stator (16).
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: April 14, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Horst Braun, Thomas Berger, Eugen Hellekes, Robert Goldschmidt
  • Publication number: 20090085417
    Abstract: The invention relates to a rotor assembly which is mounted such as to rotate around an axis of rotation (X-X?) and which comprises two magnet wheels with claws (10). The aforementioned magnet wheels are separated by an axial space and are disposed opposite one another. Moreover, each wheel (10) comprises an end shield (11) which is essentially perpendicular to the aforementioned axis (X-X?), and claws (12) extended axially from said end shield (11) towards the other wheel (10). The claws (12) of one wheel (10) are solidly connected to the end shield (11) by respective bases (121) which are separated from one another by peripheral spaces (13). The inventive assembly comprises at least one fan (30) which is positioned on an axial face of the end shield (11) of one of the wheels (10) opposite the other wheel (10), such that the fan (30) axially seals at least part of one of the peripheral spaces (13).
    Type: Application
    Filed: February 24, 2005
    Publication date: April 2, 2009
    Inventor: Claudiu Vasilescu
  • Publication number: 20090074338
    Abstract: For machinery comprising rotary components attached to at least one drive shaft, at least one rotary bearing to position the drive shaft with a rotational freedom of movement about a drive shaft axis and associated stationary components with at least one predetermined clearance from the rotary components, apparatus to prevent the rotary components from contacting the stationary components upon failure of the bearing, comprises: a rotary backup bearing sleeve attached to the drive shaft proximate the bearing comprising a rotary radial surface relative to the drive shaft axis and a rotary axial surface relative to the drive shaft axis; and a stationary backup bearing collar mounted proximate the rotary backup bearing sleeve comprising a stationary radial surface relative to the drive shaft axis proximate the rotary radial surface with a predetermined axial clearance and a stationary axial surface relative to the drive shaft axis proximate the rotary radial surface with a predetermined axial clearance; wherein t
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Behzad Hagshenas, Charles B. Parme, Dirk A. Fichtner, Crosby H. Johnson, Dominic Giammaria
  • Publication number: 20090058374
    Abstract: A high efficiency alternator capable of supplying extreme high power output with maximum dissipation of heat. Preferably, the alternator includes dual field coils mounted stationary around a common shaft and dual brushless rotors. The alternator may also include three or more phases, and uniquely wound stator assemblies. The alternator may also include dual, three-phase bridge-type rectifiers and dual voltage regulators. All electrical components are preferably redundant. Air cooling through the interior perimeter of the alternator is preferably provided to cool the housing.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 5, 2009
    Inventors: Thomas Evans, Derrick Neice
  • Publication number: 20090039719
    Abstract: An alternator of the present invention is mounted on an automotive vehicle to supply electric power to an on-board battery and electric loads. The alternator is composed of a housing, a stator fixedly held in the housing, a rotor rotatably supported in an inner bore of the stator, and other associated components. Alternating current generated in the stator is rectified into direct current and supplied to the on-board battery and electric loads. A cooling fan is connected to an axial end surface of the rotor. The cooling fan includes an annular portion extending in the axial direction to overlap with a bearing holder formed in the housing. A small annular gap is made between the annular portion and the bearing holder. Plural projections extending from the annular portion in the outer radial direction are formed integrally with the annular portion. Foreign particles are prevented from entering into the bearing by the annular portion having the projected portions.
    Type: Application
    Filed: March 20, 2008
    Publication date: February 12, 2009
    Applicant: DENSO CORPORATION
    Inventor: Shigenobu Nakamura
  • Publication number: 20090033161
    Abstract: A belt-driven electric machine for a vehicle includes a front housing including at least one front housing opening and a rear housing including at least one rear housing opening. The electric machine further includes at least one fan capable of urging cooling air into the electric machine through the at least one front housing opening and out of the electric machine through the at least one rear housing opening. A method for cooling a belt-driven electric machine for a vehicle includes urging cooling air into the electric machine at substantially the front of the electric machine. The cooling air is flowed substantially rearward in the electric machine, and heat is radiated from the electric machine into the cooling air. At least a first portion of the cooling air is expelled from the rear of the electric machine in a substantially axial direction.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 5, 2009
    Applicant: REMY INTERNATIONAL, INC.
    Inventor: Michael D. Bradfield
  • Patent number: 7482719
    Abstract: In a vehicle AC generator having a housing that covers a voltage regulator equipped with external cooling fins, and a cooling fan which rotates with the generator rotor to draw external air through the interior of the housing, an aperture is formed in the housing at a position corresponding to the voltage regulator, and outer end portions of the cooling fins protrude through the aperture to positions beyond the outer circumference of the housing, to dissipate heat from the vehicle-mounted regulator during low-speed operation of the generator, when the rate of air flow through the aperture is low.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: January 27, 2009
    Assignee: Denso Corporation
    Inventor: Motoki Itoh
  • Publication number: 20080315728
    Abstract: An actuator. In one embodiment, the actuator comprises a reversible electric motor having a stator having a housing, a rotor housed in the housing of the stator, and a shaft having a forward portion and a rearward portion extending oppositely and coaxially from the rotor, respectively; a fan member coaxially attached to the forward portion or the rearward portion of the motor shaft such that the fan member is operable simultaneously with the rotor of the reversible electric motor; and an electromagnetic brake movable between a first position and a second position, positioned in relation to the fan member such that when the electromagnetic brake is in the first position, the fan member is rotatable with the rotor of the reversible electric motor, and when the electromagnetic brake is in the second position, the fan member stops rotating firmly, thereby causing the motor stops instantly.
    Type: Application
    Filed: June 20, 2007
    Publication date: December 25, 2008
    Applicant: I-Trust Better Life Corp.
    Inventors: Quan Liu, Xiaoxiang Zhang, Jianming Qiu, Yanjun Zhang
  • Publication number: 20080315693
    Abstract: To provide a cordless power tool which can suppress heat generation of a protection unit and prevent the erroneous operation. A cordless power tool 1 includes a body casing 10; a battery 20 which is detachably attached to the body casing 10 and can supply electric power; a motor 30 which is housed in the body casing 10, and generates rotation force by the electric power of the battery 20; a cooling fan 40 which rotates by the rotation force of the motor 30; and a protection unit 50 which shuts off the power supply to the motor 30, in accordance with a detection result of the state of the battery 20, so that the battery 20 does not enter an overdischarge state or an overcurrent state. Herein, a passage of cool air generated by the cooling fan 40 is formed in the body casing 10, and the 16 protection unit 50 is arranged so that at least its part is located in the passage of the cool air.
    Type: Application
    Filed: January 17, 2008
    Publication date: December 25, 2008
    Inventor: Hiroki UCHIDA
  • Publication number: 20080303361
    Abstract: A positive-side heatsink and a negative-side heatsink that constitute a rectifier are disposed inside a case at a rear end of a rotor so as to be separated axially such that front surfaces of a positive-side base portion and a negative-side base portion face each other. The negative-side heatsink is disposed such that radiating fins that are disposed so as to project from a rear surface of the negative-side base portion are positioned radially outside a cooling fan so as to face a coil end of a stator coil.
    Type: Application
    Filed: December 27, 2007
    Publication date: December 11, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shinichi ITO, Shinji NISHIMURA, Atsushi HIROKADO
  • Patent number: 7462964
    Abstract: A first minute gap (18) is formed between the front end of a ventilation fan (16) and a first bracket (8) and a second minute gap (21) is formed between the front end of a partition member (19) and a second bracket (11); a first aperture (9a) is provided in a location at the inner periphery further inward than the vanes (16b) on the bearing bracket (9); a current of cooling air is formed by introduction of external air by the ventilation fan from this aperture; this current of cooling air is again discharged to the outside through a ventilation passage (8a) of the first bracket and a ventilation passage (1a) on the outer peripheral side of the stator core (1); in addition, a second aperture (11b) is provided in the second bracket (11), a current of cooling air is formed by introduction of external air by the ventilation fan from the second aperture (11b); and this current of cooling air is again discharged to the outside through the ventilation passage (3a) of the rotor core (3), the ventilation passage of th
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: December 9, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Nagayama, Minoru Kitamura, Shigetomo Shiraishi
  • Publication number: 20080267545
    Abstract: A hydrodynamic bearing assembly includes a bearing (10) with at least an end thereof being opened and a shaft (38) rotatably disposed in the bearing. A bearing clearance is formed between an outer surface of the shaft and an inner surface of the bearing and is filled with lubricant. A plurality of lubricant pressure generating grooves (14) are axially set on at least one of the inner surface of the bearing and the outer surface of the shaft. Each of the lubricant pressure generating grooves includes two symmetrical branches (141, 142) and has a V-shaped cross section.
    Type: Application
    Filed: June 14, 2007
    Publication date: October 30, 2008
    Applicant: FOXCONN TECHNOLOGY CO., LTD.
    Inventors: WUN-CHANG SHIH, QIANG ZHANG, RUI-JUN HUANG
  • Patent number: 7443073
    Abstract: An electric fan includes a frame (10) having a central tube (12) extending therefrom, a bearing (30) received in the central tube, a stator (50) mounted around the central tube, and a rotor (70) being rotatably supported by the bearing. The frame defines an air inlet (19) and an air outlet (17) at two different sides thereof. The stator includes a stator core (52) having a central cylinder (520). A plurality of radial posts (522) extends from the central cylinder. A plurality of magnetic poles (524) is formed at free ends of the posts. A plurality of stator coils (54) is wound around the posts. Each magnetic pole includes a lower portion (700) adjacent to the air outlet and an upper portion (60) adjacent to the air inlet. The upper portions expand radially along a direction from the air inlet to the air outlet.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: October 28, 2008
    Assignee: Foxconn Technology Co., Ltd.
    Inventors: Chao-Nien Tung, Chih-Hao Yang, Chuen-Shu Hou
  • Patent number: 7442005
    Abstract: A heat dissipation fan includes a fan frame, a stator mounted to the frame, and a rotor rotatably disposed around the stator. The fan frame includes a bracket, a central tube for positioning the stator, and a supporting member. The supporting member is made of a material having a higher bending strength than a plastic material used to form the bracket and the central tube. The supporting member includes a main body connected to the central tube, a plurality of ribs extending radially outwardly from the main body, and a plurality of engaging units formed at free ends of the ribs, respectively. The engaging units are embedded in the bracket for integrally connecting the central tube to the bracket.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: October 28, 2008
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Chin-Wen Yeh, Chin-Long Ku, Zhi-Jian Peng
  • Patent number: 7400070
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking outside air is formed in a radially outer circumferential portion of the cover; and by rotation of the cooling fan, the outside air flows radially from the ventilation hole with respect to the switching elements and goes through a suction port and is discharged through a discharge port.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: July 15, 2008
    Assignee: Mitsubishi Electric Corp.
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Patent number: 7385322
    Abstract: A rotor of an outer rotor type motor is coupled to an outside of a stator, and is provided with a shaft coupler, for being connected with a shaft of a drum, fixed at its center portion by an injected material, and a plurality of radiation holes formed therein continuously in a radial direction. The rotor includes at least one cooling fin provided with a base member fixed to a bottom surface of the rotor and a curved member attached to the base member, wherein the cooling fin is combined with the bottom surface so as to be disposed adjacent to the radiation hole. Therefore, a contact area with air can be increased, and an air circulation through the radiation holes can be facilitated. Accordingly, deterioration of the efficiency of a washing machine is prevented despite long periods of operation, and any damage caused by overheating is prevented.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: June 10, 2008
    Assignee: Daewoo Electronics Corporation
    Inventor: Jin Hyeong Park
  • Patent number: 7372180
    Abstract: An electric motor includes a stator (3) secured in the motor housing (2), a rotatable rotor (4), a fan impeller (5) arranged on the rotor (4), and an annular air duct (6) arranged between the fan impeller (5) and the rotor (4) and having a shroud (7) spaced from the impeller (5) by a slot having an axial width (X), a dimensionally stable, with respect to the shroud (7), housing stop (8), an axially, resiliently displaceable fixing element (9) forming a stator stop (10) facing in a same direction as the housing stop (8), and a locking element.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: May 13, 2008
    Assignee: Hilti Aktiengesellschaft
    Inventors: Helmut Burger, Hansjoerg Schwarz, Peter Schmiddunser, Ernst-Rudolf Luebkert
  • Publication number: 20080101739
    Abstract: The invention relates to a fluid dynamic bearing system having at least one stationary (10) and at least one moving bearing part (22) that are rotatable about a common rotational axis (16) with respect to one another and form a bearing gap (14) filled with a bearing fluid between associated bearing surfaces, wherein a sealing gap (38) adjoins one end of the bearing gap, the sealing gap being disposed between a sleeve surface (40) of the stationary bearing part (10) and an opposing sleeve surface (42) of the moving bearing part (22) and comprising a radial section and an axial section and being at least partially filled with bearing fluid, wherein in the region of the axial section of the sealing gap (38), the sleeve surface (40) of the stationary bearing part (10) forms an acute angle a with the rotational axis (16) and the sleeve surface (42) of the moving bearing part (12, 22) forms an acute angle ? with the rotational axis (16), wherein for the angles the condition ???>0° applies, and the difference B2
    Type: Application
    Filed: October 19, 2007
    Publication date: May 1, 2008
    Inventors: Matthias Wildpreth, Andreas Kull, Martin Hafen, Olaf Winterhalter, Thilo Rehm
  • Patent number: 7365471
    Abstract: An internal cooling fan assembly for use with a claw-pole segment of a rotor assembly is provided that maximizes air flow while providing a reduced sound signature. The fan assembly includes a base portion that contacts the claw-pole segment when the fan assembly is mounted to the claw-pole segment. The fan assembly also includes a number of blades extending from the base portion such that the blades project outward from a plane normal to the rotor. The plurality of blades have a geometry that aligns with roots of the claw-pole segment. In addition, a first blade of the number of blades is of a first configuration and a second blade of the number of blades is of a second configuration different from the first configuration.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 29, 2008
    Assignee: Remy Inc.
    Inventors: Alex Creviston, Michael McCord, Chris Bledsoe, David Maley
  • Patent number: 7358630
    Abstract: The ventilating device fixed on a rotor of a rotary electrical machine, comprises a first fan (62a) having a radial plate portion (64a), at least one second fan (62b) having a radial plate portion (64b), and means for fastening the two fans (62a, 62b), each fan (62a, 62b) having, at the outer peripheiy of its radial plate portion, first branches (78a) and second branches (78b) which extend radially outwards, at least some of the branches having a blade (68a, 68b), while at least one first branch (78a) and at least one second branch (78b) includes a first (78a) and a second (78b) mutual overlapping portion to define an overlap zone (Z), the said fastening means (80, 82) being at least partly arranged at the level of the overlap zone.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: April 15, 2008
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Claudiu Vasilescu, Richard Tellier, Nam-Gook Kim
  • Publication number: 20080084140
    Abstract: Fan apparatus for an air conditioner including a fan (50), a shaft (68) coupled to the fan (50), a rotor (60) for transmission of driving force to the shaft (68) for rotating the fan (50), a stator (65) on an inside of the rotor (60) to form a BLDC motor together with the rotor (60), and a fan housing (40) for enclosing the fan (50), thereby reducing noise and enhancing fan (50) efficiency.
    Type: Application
    Filed: August 19, 2004
    Publication date: April 10, 2008
    Inventor: In Gyu Kim
  • Patent number: 7342333
    Abstract: An outer rotor type multi-pole generator includes a stator mounted on a stationary support, and a rotor formed by fixedly attaching a magnet to the inner periphery of a bottomed cylindrical rotor yoke that is coaxially fixed to an end of a drive shaft rotatably supported by the support and that coaxially covers the stator. A plurality of radially extending vanes are integrally provided in a closed end of the rotor yoke, and a plurality of intake holes positioned between the vanes are formed in the closed end of the rotor yoke. It is thereby possible to reduce the number of components and improve the efficiency of assembly operations, and to set the overall axial length of the generator at a relatively small value while avoiding any reduction in the rigidity with which the rotor is supported.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: March 11, 2008
    Assignee: Sawafuji Electric Co., Ltd.
    Inventor: Jun Umezu
  • Patent number: 7332838
    Abstract: To connect a motor shaft to a fan, a connection rod is used that is symmetrical in shape with respect to a longitudinal axis of the connection rod. The connection rod includes a first part formed with a hole in coaxial with the longitudinal axis, and a second part formed at least partially with a threaded portion. The motor shaft is attached to the connection rod by inserting the motor shaft into the hole of the first part of the connection rod. The fan is attached to the connection rod by inserting the second part of the connection rod into the center hole of the hub portion and supports the fan with a pair of nuts, one at one side of the hub portion and another at another side of the hub portion wherein the nuts are moved toward each other with the hub portion interposed therebetween.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: February 19, 2008
    Assignee: Hitachi Koki Co., Ltd.
    Inventor: Yoshitaka Akiba
  • Patent number: 7320542
    Abstract: A blender includes a base frame, a cover for covering the base frame, a muffler housing, a motor, and a fan. The base frame includes a hollow column having a compartment for receiving the motor. Two separating plates extend downward from a bottom end of the base frame. The motor includes a lower drive shaft for driving the fan for driving ambient cool air into the compartment of the hollow column via the apertures, thereby directly cooling the motor. The separating plates prevent the hot air exiting the blender from entering the blender again.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: January 22, 2008
    Inventor: Chun-Yu Tai
  • Publication number: 20080012447
    Abstract: A dynamo electric machine for an aircraft gas turbine engine includes a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to the associated gas turbine engine assembly, said main shaft extending coaxially within said hollow rotor shaft, and a sleeve-like member of electrically insulating material between said rotor shaft and said main shaft, said sleeve-like member providing an electrically insulating driving connection between said main shaft and said rotor shaft whereby said main shaft and said rotor shaft rotate together.
    Type: Application
    Filed: September 9, 2005
    Publication date: January 17, 2008
    Inventors: John Gregory Snelick, Thomas Edward Morgan, Adam Brian Brugmann
  • Publication number: 20080007128
    Abstract: A brushless fan motor, in which cooling effect on a stator may be enhanced, is provided. A center through hole is formed in a center of a bottom wall portion of a first brushless fan motor. Vane portions are formed on an inner wall portion of the brushless fan motor and are formed into a shape which allows ambient air to be drawn in through the center through hole. Through holes are formed in an end plate portion of the first brushless fan motor in order to introduce the ambient air, which has been drawn in through the center through hole, inside a rotor cover.
    Type: Application
    Filed: July 3, 2007
    Publication date: January 10, 2008
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Naoki Murakami, Hiromitsu Kuribayashi, Katsumichi Ishihara
  • Patent number: 7309935
    Abstract: The present invention relates to a fan wheel (11) for electrical machines, in particular for alternators of motor vehicles, with a fan disk (10) that, on its axially outwardly directed end face, has a number of fan blades (13, 18) distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels (20, 21) formed between them. One part (18) of each of the fan blades is joined in a fixed manner with the fan disk (10) via only its radially outward end section (18a), so that each inner end section (18b) is swiveled radially increasingly outwardly by a centrifugal force (22) occurring there as rotational speeds increase, to reduce the cooling air stream.
    Type: Grant
    Filed: October 19, 2002
    Date of Patent: December 18, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Horst Braun, Hans-Joachim Lutz
  • Publication number: 20070273220
    Abstract: A controller-integrated motor includes a motor main body and a controller integrated with the motor main body to control the motor main body, the motor main body, including a stator core, a shaft which rotates to exert driving force on the motor main body, a frame which holds the stator core and the shaft, and an outer fan provided around the shaft so that the motor main body is recessed inward toward a rotational center of the shaft, the outer fan discharging cooling air stream to cool the motor main body, the controller being provided in proximity to an outer periphery of the frame, the motor main body being formed so that a cooling air stream from the outer fan flows in an axial direction of the shaft along an outer peripheral surface of the frame.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 29, 2007
    Inventors: Taihei KOYAMA, Shinichi Noda, Kenzo Tonoki, Shigetomo Shiraishi