Suction Pump Or Fan Patents (Class 310/62)
  • Publication number: 20120299405
    Abstract: An electric motor includes an inner stator including inner magnetic poles arranged circumferentially, an outer stator including outer magnets arranged circumferentially, and a rotor rotatably disposed between the inner and outer stators. The rotor includes a shaft, a rotor core fixed to the shaft and a winding wound on the rotor core. The rotor core includes a ring shaped yoke having a plurality of inner teeth extending inwardly and a plurality of outer teeth extending outwardly. The winding includes a plurality coils each including an inner side received in a corresponding inner slot formed between adjacent inner teeth and an outer side received in a corresponding outer slot formed between adjacent outer teeth.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 29, 2012
    Inventors: Yue Li, Mao Xiong Jiang, Jian Zhao, Zhi Jun Wang, Ya Ming Zhang, Hai Hui Xiang
  • Publication number: 20120299406
    Abstract: A washing machine is disclosed. An object of the present invention is to provide a washing machine which can radiate the heat generated from the stator outside, regardless of a rotational direction of a rotor.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 29, 2012
    Inventors: Sang Wook Hong, Dong Won Kim, Na Eun Kim
  • Publication number: 20120280582
    Abstract: An electric machine includes a stator and a rotor configured to rotate about an axis of rotation in a direction of angular rotation. The rotor includes a first claw-pole segment and an opposing second claw-pole segment. The first claw-pole segment includes a plurality of fingers extending from an end ring. Each finger includes a distal end and a proximal end with the proximal end fixed to the end ring. Each finger also includes an interior side and an exterior side with the exterior side facing the stator. A leading side and a trailing side are defined on each finger by the direction of angular rotation. A chamfer is formed on the exterior trailing side of each finger at the proximal end of the finger.
    Type: Application
    Filed: July 16, 2012
    Publication date: November 8, 2012
    Applicant: REMY TECHNOLOGIES, LLC
    Inventor: Michael D. Bradfield
  • Patent number: 8299663
    Abstract: An arrangement for cooling an electrical machine is provided. The electrical machine includes a rotor and a stator, an air-gap being between the rotor and the stator. The stator includes a plurality of stacked laminate-plates. The laminate-plates include on a first side, which is facing the air-gap, a plurality of slots containing metal-windings of a stator-coil. The laminate-plates are positioned and fixed by a structural support and by end-plates in relation to a central-part of the stator. A joint cavity is formed by the end-plates, the central-part of the stator and an internal surface of the laminate-plates. The internal surface is defined by a second side of the laminate-plates, the second side being opposite to the first side. The cavity is coupled with an air-cooling-arrangement, which is arranged and used to circulate a cooling gaseous medium from the cavity to the air-gap and the laminate-plates back into the cavity.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: October 30, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Uffe Eriksen, Soeren Gundtoft
  • Patent number: 8292700
    Abstract: An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: October 23, 2012
    Assignee: Black & Decker Inc.
    Inventors: William F. Gallagher, Michael C. Doyle, Eric E. Hatfield, David C. Tomayko, Daniel L. Krout, Tanika Malloy
  • Patent number: 8283817
    Abstract: An electric machine with improved cooling efficiency includes a stator, a rotor operating as a rotor fan and comprising a shaft defining an axial direction and having radial and axial cooling channels, and an axial fan configured as a twin axial fan and arranged coaxially with the shaft and supplying a coolant to the axial cooling channels. The axial fan has first and second blade rings and a funnel-shaped tube with a smaller opening directly connected to the axial cooling channels of the rotor to deliver coolant to the axial cooling channels of the rotor, and a larger opening, which is non-rotatably connected to and encloses the first blade ring. The second blade ring is firmly attached at an outer circumference of the funnel-shaped tube to deliver the coolant to the stator. Both the stator and the rotor can be cooled using an efficient coolant flow.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: October 9, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christian Deeg, Ekkehard Ressel, Sebastian Weiβ
  • Publication number: 20120248908
    Abstract: A cooled fan motor may include an elongate housing adapted to be attached to a tankhead, the housing having at least one longitudinally extending groove, a shaft rotatably attached to the housing, a hub attached to the shaft, the hub having at least one opening therethrough and shaped to form a gap with a tankhead attached to the housing, a rotor attached to the hub, and a stator mounted on the housing such that the groove in the housing forms an air passage between the housing and the stator connecting the gap and the opening. Air external to the motor is able to enter through the gap between the hub and tankhead, flow along the air passage formed by the groove in the housing and exit the motor through the opening in the hub, thereby cooling an interior of the motor. In one aspect, the hub includes radially extending blades such that when the stator is energized, rotation of the hub and blades causes air to enter through the gap, flow along the air passage and exit the motor through the opening in the hub.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 4, 2012
    Applicant: DAYTON-PHOENIX GROUP, INC.
    Inventors: Joseph A. Zahora, Harley J. Weldy
  • Patent number: 8269383
    Abstract: Embodiments of the invention provide an electric machine module and a method for cooling an electric machine. The electric machine module includes the electric machine including a stator with stator end turns and a housing enclosing the electric machine. An inner wall of the housing defines a machine cavity. The electric machine module also includes a cover coupled to the housing and extending radially inward into the machine cavity. The cover and the stator end turns define a stator cavity which is in fluid communication with the machine cavity.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: September 18, 2012
    Assignee: Remy Technologies, LLC
    Inventor: Michael D. Bradfield
  • Patent number: 8267673
    Abstract: A fan assembly with an impeller and shroud for application in a vehicle cooling system. The fan is powered by an external rotor brushless direct current (BLDC) motor having an electronic controller positioned away from the BLDC on an outer shroud wall with a plurality of ducts drawing an airflow from a static lower pressure created by the impeller, the airflow streaming over a heat sink disposed on the controller, exiting through a shroud. The static lower pressure air is pulled by a centrifugal fan and skewed magnets inside the motor through a plurality of ducts in a shroud hub, cooling the BLDC, maintaining low resistance for high efficiency. The BLDC is integrated into the assembly, having a stator fixed in the shroud hub and a rotor directly fused to the impeller, the shroud and impeller forming the BLDC motor without a housing, allowing the motor to easily dissipate heat.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: September 18, 2012
    Inventor: John Pairaktaridis
  • Patent number: 8251674
    Abstract: A fan assembly with impeller and shroud for application in a vehicle cooling system. The fan is powered by an external rotor brushless direct current (BLDC) motor having an electronic controller positioned away from the BLDC on an outer shroud wall with a plurality of ducts drawing an airflow from a static lower pressure created by the impeller, the airflow streaming over a heat sink disposed on the controller, exiting through a shroud. The static lower pressure air is pulled by a centrifugal fan and skewed magnets inside the motor through a plurality of ducts in a shroud hub, cooling the BLDC, maintaining low resistance for high efficiency. The BLDC is integrated into the assembly, having a stator fixed in the shroud hub and a rotor directly fused to the impeller, the shroud and impeller forming the BLDC motor without a housing, allowing the motor to easily dissipate heat.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: August 28, 2012
    Inventor: John Pairaktaridis
  • Patent number: 8251676
    Abstract: An axial-flow fan for a vehicle radiator includes a fan wheel that delivers the main air flow and is driven by a hub motor coupled to the fan wheel. The vehicle radiator is on the intake side of the fan wheel, the hub motor during operation is cooled by a secondary air flow, and the cooling air flow of the hub motor flowing out from an air outlet opening is on the intake side in the hub area of the fan wheel. An air baffle device including a propeller is assigned to the hub motor and the cooling air flow passing through the air baffle device is led out of the air outlet opening, avoiding disturbances of the main air flow delivered by the fan wheel.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: August 28, 2012
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg
    Inventors: Karl-Heinz Fleischmann, Stefan Berg, Alexander Gass
  • Patent number: 8212439
    Abstract: A fan-motor unit comprises a fan driven by an electric motor, both mounted on a support, at least one inlet (I) and one outlet (S) for a forced air flow, an electronic circuit board for controlling the motor, and a radiator at least partially immersed in the forced air flow. The radiator has a curved peripheral edge determining a convex face and a concave face of the said radiator, the electronic circuit board being in contact with the said radiator on the concave face side and a substantially cylindrical bearing surface on the convex face side of the said radiator. A radial gasket that forms a skirt comprises a first end secured to the support, a free second end, and a substantially cylindrical interior face between the first and second ends, and the interior face of the radial gasket bears against the bearing surface so as to isolate the electronic circuit board from the air flow.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: July 3, 2012
    Assignee: Brose Fahrzeugteile GmbH & Co. KG, Wurzburg
    Inventors: Pascal Dautel, Stéphane Foulonneau
  • Patent number: 8198763
    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: Grant
    Filed: February 13, 2007
    Date of Patent: June 12, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Kato, Yoshihito Asao
  • Patent number: 8198764
    Abstract: An air-gap is between a rotor and a stator. The stator comprises a number of stacked laminate-plates. The laminate-plates are positioned and fixed by a structural support and by end-plates in relation to a central-part of the stator to achieve the air-gap. A cavity is formed by the end-plates, the central-part of the stator, the air-gap and an internal surface of the rotor. An air-cooling arrangement is arranged and used to circulate a gaseous medium for cooling purposes inside the cavity.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: June 12, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: James Kenneth Booth, Uffe Eriksen, Soeren Gundtoft, Jacob Blach Nielsen
  • Publication number: 20120131904
    Abstract: A power plant for a jet-type model airplanes and UAVs includes an electric motor and a cover. The cover receives a portion of the electric motor and a sleeve into which the electric motor is inserted. The sleeve has a plurality of fins to dissipate heat and create openings into the cover. Air from the fan rotor passes through the openings to cool an electronic speed control member and exits a rear opening in the cover. The cover may also have additional openings for air to enter into the cover.
    Type: Application
    Filed: September 25, 2011
    Publication date: May 31, 2012
    Inventor: Robert S. Violett
  • Publication number: 20120133223
    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: Application
    Filed: November 3, 2011
    Publication date: May 31, 2012
    Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventors: Yonggang LIU, Songfa TANG
  • Publication number: 20120112575
    Abstract: A permanent magnet alternator includes a permanent magnet alternator stator attached to a housing. A shaft is rotatable with respect to the housing with a permanent magnet alternator rotor attached to the shaft. The permanent magnet alternator rotor is positioned with respect to the permanent magnet alternator stator so as to generate electricity when the shaft rotates. A cooling fan is also attached to the shaft and is positioned in a gas flow path for flowing air through the gas flow path.
    Type: Application
    Filed: November 9, 2010
    Publication date: May 10, 2012
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Michael R. Blewett, Harold W. Hipsky, Gerald P. Dyer
  • Publication number: 20120104881
    Abstract: A motor has an output shaft which is rotatably supported by a housing, a rotor which is fixed to the output shaft and which comprises a printed-wiring board, and a stator which is fixed to the housing and which comprises a magnet facing the rotor. The printed-wiring board comprises a coil/commutator disk and a coil disk. A commutator conductor pattern is formed in a commutator region of the coil/commutator disk. Likewise, coil conductor patterns are formed in respective coil regions of the coil/commutator disk and of the coil disk.
    Type: Application
    Filed: September 22, 2010
    Publication date: May 3, 2012
    Inventors: Hideyuki Tanimoto, Chikai Yoshimizu, Nobuhiro Takano, Hiromi Ozawa, Kazuhiko Funabashi
  • Publication number: 20120104882
    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: Application
    Filed: January 9, 2012
    Publication date: May 3, 2012
    Applicant: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventor: Mingpan PAN
  • Patent number: 8167585
    Abstract: Certain exemplary embodiments can comprise a system, which can comprise an electric motor cooling fan. The electric motor cooling fan can be driven by an auxiliary motor distinct from an electric motor adapted to be cooled by the electric motor cooling fan. The system can comprise a motor enclosure of the electric motor. The motor enclosure can be configured in a predetermined ventilation pattern.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: May 1, 2012
    Assignee: Siemens Industry, Inc.
    Inventors: Scott Kreitzer, Patric Willems, Ekkehard Ressel
  • Publication number: 20120092948
    Abstract: A concrete vibrator system with a constant speed motor, one of a set of vibrator heads with different load characteristics, and one of a set of drive shafts connecting the motor output shaft with one of the vibrator heads. A speed control circuit senses motor shaft speed and maintains constant speed. The motor is cooled by a fan mounted on the motor rotor which draws air through an inlet and exhausts air through an outlet both of which face downwardly when the motor is in use. Rain or other liquids are prevented from reaching the motor.
    Type: Application
    Filed: January 30, 2009
    Publication date: April 19, 2012
    Inventors: Glenn Heimbruch, Paul Jaworski
  • Patent number: 8159094
    Abstract: An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. A plurality of fluid flow passages extend through the rotor between opposite ends. An electro-magnetic drive system is adapted for driving rotation of the rotor relative to the stator. A fluid circulation system is in fluid communication with the fluid flow passages for providing fluid flow from the first end of the rotor to the second end of the rotor through at least one of the fluid flow passages and fluid flow from the second end of the rotor to the first end of the rotor through at least one other of the fluid flow passages. The rotor and components of the fluid circulation can be assembled to make a rotor assembly.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: April 17, 2012
    Assignee: Nidec Motor Corporation
    Inventors: Stephen M. Ruffing, Ronald W. Schmidt, Kenneth R. Friedman
  • Publication number: 20120086291
    Abstract: A laminated rotor and stator are provided for a dynamoelectric machine. The rotor includes at least one end flange having a plurality of cooling apertures and at least one rotor inner vent lamination having a plurality of cooling apertures. At least one rotor outer vent lamination has a plurality of cooling apertures in communication with a first plurality of radially oriented ventilating slots. The end flange, rotor inner vent lamination and rotor outer vent lamination are configured together into a rotor lamination stack, and the plurality of cooling apertures form a generally axial cooling passage for a flow of a cooling medium.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Inventors: Mark John DeBlock, Blake Weldon Wilson, Thomas Mancuso, Lakshminarayana Kanakamedala
  • Patent number: 8134261
    Abstract: A cooling arrangement is disclosed for an electrical machine in which the main cooling air circulation within the machine is arranged using a centrifugal blower in at least one of the ends of the machine, making the main cooling air circulation flow through at least an air space in the machine and the outer surface of the stator. A circulating fan is arranged in the immediate vicinity of the centrifugal fan for the purpose of generating a coil end circulation that circulates air at least in the area of the machine's coil ends.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: March 13, 2012
    Assignee: ABB Oy
    Inventors: Jouni Ikäheimo, Jere Kolehmainen, Jari Pekola, Tommi Ryyppö
  • Patent number: 8129877
    Abstract: In one aspect, an arrangement for cooling of an electrical machine is provided. A rotor and a stator include an air-gap arranged between the rotor and the stator. The rotor and the stator include a circulation arrangement to allow the circulation of air for cooling-purposes of the rotor and of the stator. The rotor and the stator are encapsulated by a shell which is formed to allow the flow of hot air from the rotor and the stator to a heat-exchanger. The shell is formed to allow the flow of cool air from the heat-exchanger back to the rotor and the stator for cooling-purposes. The shell includes a number of corners, while each corner is used to gather the hot air before it is guided to the heat-exchanger.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 6, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: James Kenneth Booth, Uffe Eriksen
  • Patent number: 8102086
    Abstract: An exciter machine including an auxiliary exciter machine and a fan is provided. The fan is arranged on one side of the exciter machine and includes a mount ring on the external circumference on which permanent magnets are arranged in order to form an auxiliary rotor. The auxiliary rotor is moved within an auxiliary exciter stator.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: January 24, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Günther Hautke, Norman Kühn
  • Patent number: 8097994
    Abstract: There is provided a vehicle AC generator in which the contact face of at least one of a pair of cases that make contact with the respective axis-direction end faces of a stator core is provided with a cooling air path that connects the outer circumferential surface of a coil end portion with the outer circumferential surface of the stator core and has an opening in the axis direction at the outer circumferential surface of the stator core so that the coolability of the coil end portions of the stator coil is raised, and the amount of cooling air is increased so that the overall coolability of the AC generator is improved.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: January 17, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Ito, Shinji Nishimura, Yoshiro Imazawa
  • Publication number: 20120001505
    Abstract: Electric machine, in particular an electric motor, which comprises a motor support, a stator, a rotor, a fan arranged at the face end of said motor and an electronics casing disposed adjacent to the motor support for electronic components to be arranged in wherein a face-end wall of the motor support which is assigned to the fan is provided with an axial opening such that an air stream discharged from the motor support is by means of said fan deflected toward the electronics casing.
    Type: Application
    Filed: July 2, 2011
    Publication date: January 5, 2012
    Applicant: HANNING ELEKTRO-WERKE GMBH & CO. KG
    Inventors: Thomas Henke, Stefan Rosenau, Hans Teuber, Werner Hangmann
  • Patent number: 8087977
    Abstract: An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: January 3, 2012
    Assignee: Black & Decker Inc.
    Inventors: William F. Gallagher, Michael C. Doyle, Eric E. Hatfield, David C. Tomayko, Daniel L. Krout, Tanika Malloy
  • Publication number: 20110316369
    Abstract: An electric machine includes a rotor. The rotor includes a body having a number of pole members, a central hub, and a plurality of mounting members. The plurality of mounting members are fewer than half the number of pole members. A fan member is mounted to the rotor. The fan member includes a number of fan blades that project outward from a hub portion. A plurality of mounting elements are provided on select ones of the number of fan blades. The plurality of mounting members engage respective ones of the plurality of mounting elements to attach the fan member to the rotor.
    Type: Application
    Filed: June 28, 2010
    Publication date: December 29, 2011
    Applicant: REMY TECHNOLOGIES, L.L.C.
    Inventors: Kirk Neet, Scott Bitzer
  • Publication number: 20110309697
    Abstract: An electric motor assembly including a stator having a stator core and windings around the stator core is disclosed. The stator core has opposing ends and an outer surface extending between the opposing ends. The electric motor assembly also includes a housing having an inner surface enclosing at least a portion of the stator, and at least one fluid passage between the outer surface of the stator core and the inner surface of the housing. The fluid passage permits a coolant in the fluid passage to contact one or more portions of the outer surface of the stator core to remove heat from the stator core during operation of the electric motor assembly. Additional motor assemblies including stator and/or rotor cooling features are disclosed.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 22, 2011
    Inventors: Thomas E. Kirkley, JR., Lawrence J. Wittman, Andrew F. Poag, Steven P. Randall
  • Patent number: 8057195
    Abstract: An outer rotor type fan-motor includes: a rotational shaft; a bearing assembly that rotatably supports the rotational shaft; a stator installed at an outer side of the bearing assembly; a permanent magnet assembly that covers an outer side of the stator at a certain distance and is installed at the rotational shaft; and a fan that includes a shaft fixing part for fixing the rotational shaft, a hub for covering an outer side of the permanent magnet assembly at a certain distance and blades formed around the hub. An insulation space is formed between the permanent magnet assembly and the fan to prevent transfer of vibration and noise of the permanent magnet assembly to the fan, and vibration or noise of high frequency can be reduced.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: November 15, 2011
    Assignee: LG Electronics Inc.
    Inventors: Dong-Il Lee, Hyoun-Jeong Shin
  • Publication number: 20110273041
    Abstract: An electricity-generating device has a rotator unit has a rotator, multiple magnetic strips and a shaft and has a stator unit comprising multiple annular steel sheets, a positioning post, multiple dividing boards, multiple insulating sheets, an inner coil and an outer coil. The shaft is connected to a drive motor and receives power from the drive motor so that the rotator unit rotates inside the stator unit of energy-generating device. By continuously shearing to perform electromagnetic inducement interaction, induced current is generated to output and to supply battery charge and outside electrical consumption or to actuate multiple electricity-generating modules arranged in parallel.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 10, 2011
    Inventors: HUAN-CHING TSENG, Chiun-Liang Tsai, Chun-Hsin Tsai
  • Patent number: 8053939
    Abstract: To provide a brushless AC generator for a vehicle, which is capable of improving a cooing performance for an excitation coil and increasing an output of electric power generation with a simple structure. An external fan 11 fixed to a shaft 10 outside the brackets 5 and 6 and an internal fan 34 fixed to a rotor assembled body 21 formed from a first rotor pole 22 and a second rotor pole 23 united into one body, the internal fan 34 having fan blade 34a provided in a valley part 22b between claw poles 22a of the first rotor pole 22, are provided. The external fan 11 and the internal fan 34 are used to generate an air flow for cooling a stator core 3, the rotor assembled body 21, an excitation core 31 and an excitation coil 33.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hideyuki Hayashi
  • Publication number: 20110266897
    Abstract: An electric machine is provided. The electric machine includes a stator, a rotor and a closed cooling channel through which a gaseous cooling medium circulates. The stator includes a stator lamination at least partially encasing several stator windings. The closed cooling channel is disposed in circumferential direction of the stator lamination. The stator lamination is at least partially formed as fins.
    Type: Application
    Filed: April 12, 2011
    Publication date: November 3, 2011
    Inventor: Jean Le Besnerais
  • Publication number: 20110266898
    Abstract: A cooling system is provided for an electric motor having control circuitry and including a motor housing surrounding the motor. The motor drives at least one radial fan at one end thereof for directing airflow through the motor housing across the motor. A fan housing encloses the cooling fan and defines a diverter chamber radially outboard of the fan that is sized to divert a portion of the airflow away from the electric motor. A control box contains the control circuitry and includes a base having a heat sink for contacting the control circuitry. The base defines a plenum in communication with the diverter chamber and a channel in communication with the plenum and the heat sink to direct the diverted airflow across the heat sink.
    Type: Application
    Filed: July 11, 2011
    Publication date: November 3, 2011
    Applicant: NIDEC MOTOR CORPORATION
    Inventors: José L. Vadillo, Raymond D. Heilman, Donald E. Morgan
  • Patent number: 8049380
    Abstract: An electric motor has a stator and a rotor. The stator has a housing with inlets and outlets. The rotor has a shaft, a rotor core and a commutator. A fan is fixed to the rotor. An end cap is fitted to the housing to close a first end of the housing and support electrical components, including brush gear. The brush gear includes two brush assemblies, each comprising a brush for making sliding electrical contact with the commutator and a brush guidance mechanism for resiliently urging the brush into contact with the commutator. The brush assemblies are accommodated in compartments of the end cap. Each compartment has vents on an axially facing side thereof and openings in a transverse wall thereof. An air guide guides a part of the airflow generated by the fan exiting from at least one of the outlets of the housing to flow into the compartments via the openings and exit the compartments via the vents to cool the brushes.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: November 1, 2011
    Assignee: Johnson Electric S.A.
    Inventors: Wen Liang Li, Ji Dong Chai, Bao Ting Liu
  • Patent number: 8030808
    Abstract: An external rotor for a direct current drive motor with a side wall, an end cover, a cavity, an opening, a base, a magnetic tile, a center hole, and a magnetic yoke shell. A method for producing an external rotor for a direct current drive motor by integrally forming by injection molding a magnetic yoke shell and multiple magnetic tiles; forming a side wall on said magnetic yoke shell and an end cover at the bottom of said side wall; forming a base at the center of said end cover; and integrally forming by injection molding said base and a rotating spline.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: October 4, 2011
    Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.
    Inventor: Xu Zhang
  • Patent number: 8022583
    Abstract: A direct current drive motor with a stator core, an end insulator, and a coil winding forming a stator, and a housing, a magnetic yoke shell, and multiple magnetic tiles, forming a rotor. The magnetic yoke shell and the magnetic tiles are disposed on the housing. Multiple teeth protrude from a side wall of the stator core. A slot is formed between two adjacent teeth. The coil winding is disposed in the slot and wraps around the tooth.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: September 20, 2011
    Assignee: Zhongshan Broad-Ocean Motor Co., Ltd.
    Inventor: Xu Zhang
  • Publication number: 20110193432
    Abstract: A dynamoelectric machine main body that includes: a housing that is constituted by a rear bracket and a front bracket; a rotor; a stator; and a fan, and a power supply unit that is mounted integrally onto the dynamoelectric machine main body are included, the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the rear bracket has: air discharge ports that are formed on portions that are positioned radially outside the fan; and air suction ports that have openings nearer to a bottom portion than the power supply unit, and includes a partitioning member for configuring a ventilation channel that extends from the air suction ports to the air discharge ports that is disposed between the power supply unit and the fan.
    Type: Application
    Filed: July 29, 2010
    Publication date: August 11, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Atsushi TAKECHI, Dai NAKAJIMA, Hitoshi ISODA, Masahiko FUJITA
  • Patent number: 7994667
    Abstract: An air cooling arrangement for an electric engine comprises a rotor, a stator disposed co-axially on the rotor, and a partition disposed between the rotor and the stator and extending along a complete axial length of the rotor and mounted on the rotor so as to be in co-rotational communication with the rotor, the partition providing a segregated cooling air flow so as to prevent a radial flow of cooling air from the rotor to the stator. The arrangement further comprises at least one fan configured to provide cooling air to the rotor and the stator, wherein the partition partitions and segregates the at least one fan and provides an inner fan and an outer fan and extends between the inner fan and the outer fan.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: August 9, 2011
    Assignee: Alstom Technology Ltd
    Inventor: Richard Zickermann
  • Publication number: 20110187212
    Abstract: The present invention provides an automotive electric motor-generator that can achieve sufficient cooling of a radiating plate by ensuring a sufficient cooling airflow ventilation channel within limited axial or radial dimensions. In the present invention, first and second radiating plates each form a fan shape, have N-channel power MOSFETs mounted thereto, and have a drain potential for the power MOSFETs. A first circuit board includes insert conductors that connect the power MOSFETs in series, and a second circuit board has insert conductors that are connected to source terminals of the power MOSFETs and that have negative potential. The first radiating plate, the second radiating plate, the first circuit board, and the second circuit board are disposed in a fan shape that is centered around a shaft so as to line up radially in a plane that is perpendicular to the shaft outside one axial end of a rear housing.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 4, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasunari HINO, Yoshihito ASAO
  • Patent number: 7988538
    Abstract: An angle grinder is provided including a radial fan assembly. The radial fan assembly is configured to direct exhaust radially outwardly and axially away from a user of the angle grinder. Brush card assemblies for an angle grinder are also provided. The brush card assemblies provide for the securing of brush cards to a field case of the angle grinder by the interface between the field case and brush cards. Additionally, a spindle lock mechanism and a safety mechanism for an angle grinder are provided.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: August 2, 2011
    Assignee: Black & Decker Inc.
    Inventors: Paul K. Trautner, Philip T. Miller, Kevin S. Agan, Erik Ekstrom, Junyi Xie, Yaping Yang, Jason Melvin, Gregg L. Sheddy
  • Publication number: 20110175469
    Abstract: An automotive alternator is provided that reduces exclusive circumferential space for a regulator assembly inside a rear bracket, and that also increases performance in cooling the regulator assembly and a rectifier by ensuring that flows of air that cool the regulator assembly and the rectifier do not interfere with each other. An approximately C-shaped rectifier is disposed in a vicinity of a rotating shaft, and a regulator assembly is disposed between two end portions of the approximate C shape of the rectifier. A brush holder portion, a regulator circuit housing portion, and a connector portion that constitute a regulator assembly are positioned such that respective center lines thereof are in a common plane that includes a central axis of the rotating shaft.
    Type: Application
    Filed: May 22, 2007
    Publication date: July 21, 2011
    Applicant: Mitsubishi Electric Corporation
    Inventor: Atsushi Oohashi
  • Publication number: 20110169354
    Abstract: A rotating electrical machine includes a rotor and a stator including an annular stator core formed by helically stacking a plurality of core pieces that are connected to each other by connecting portions, the rotor being disposed inside an inner periphery of the stator core. The connecting portions are linearly arranged along a stacking direction of the stator core so that grooves that extend in the stacking direction of the stator core are formed in an outer peripheral surface of the stator core at positions where the connecting portions are provided.
    Type: Application
    Filed: December 3, 2010
    Publication date: July 14, 2011
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Hiroshi TSUMAGARI
  • Patent number: 7977845
    Abstract: Exemplary embodiments of the present invention relate to an induction motor including a stator having a circular cross-section and an inner passage having a longitudinal axis defining a bore, a solid core steel rotor having a circular cross-section rotatably disposed within the bore of the stator, and an air gap disposed between the rotor and the stator. A copper conductive layer is disposed on the steel rotor to increase the electrical conductance of the rotor. Exemplary embodiments adhere the copper conductive layer to the steel rotor using Hot Isostatic Pressing (HIP). The HIP process encloses the steel rotor and the copper conductive layer in a containment vessel, and adheres the conductive layer to the rotor by applying high temperature and high gas pressure to the outside of the containment vessel.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: July 12, 2011
    Inventor: Arnold M. Heitmann
  • Patent number: 7977832
    Abstract: A cooling system is provided for an electric motor having control circuitry and including a motor housing surrounding the motor. The motor drives at least one radial fan at one end thereof for directing airflow through the motor housing across the motor. A fan housing encloses the cooling fan and defines a diverter chamber radially outboard of the fan that is sized to divert a portion of the airflow away from the electric motor. A control box contains the control circuitry and includes a base having a heat sink for contacting the control circuitry. The base defines a plenum in communication with the diverter chamber and a channel in communication with the plenum and the heat sink to direct the diverted airflow across the heat sink.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: July 12, 2011
    Assignee: Nidec Motor Corporation
    Inventors: Jose L. Vadillo, Raymond D. Heilman, Donald E. Morgan
  • Patent number: 7976291
    Abstract: A cooling fan includes an outer housing. A motor support is fixed to the outer housing and a motor is mounted to the motor support. A hub is coupled to the motor and, with the motor support, forms a motor enclosure that substantially surrounds the motor. Multiple blades extend radially from the hub and are arranged so as to generate a flow of air around the motor enclosure when the blades are rotated. The cooling fan also includes a motor cooler including a flow path through the motor enclosure, wherein the flow path has a first opening and a second opening, wherein the second opening is disposed within an area of lowered downstream pressure so as to develop a differential pressure between the first and second openings and generate a flow of air through the motor enclosure as the motor operates.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: July 12, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Wade D. Vinson, John P. Franz, Troy Della Fiora, Jeffrey M. Giardina
  • Publication number: 20110156503
    Abstract: A rotor (24) for a rotary electric machine (20), mainly for the automotive industry, that comprises a front polar wheel (46N) and a rear polar wheel (46S), each polar wheel (46N, 46S) including claws (52) extending axially towards the other polar wheel (46N, 46S), each claw (52) of a polar wheel (46N, 46S) being circumferentially interleaved between two claws (52) of the other polar wheel (46N, 46S), at least two interpolar gaps (62) being provided between the side faces (60) opposite two consecutive claws (52), and at least two members (68) defining a magnetic barrier being provided in two interpolar gaps (62) associated on either side of a predetermined claw (52D). The front longitudinal ends (72) of the two members (68) are connected by a connector (82) in order to define an open chain (80).
    Type: Application
    Filed: December 21, 2007
    Publication date: June 30, 2011
    Inventors: Alexandre Pfleger, Olivier Gas
  • Publication number: 20110156511
    Abstract: An electric motor has a stator and a rotor rotatably mounted in the stator. The rotor has a shaft and a fan mounted on the shaft. A air guide structure with an axial extension portion is arranged at one end of the stator adjacent the fan. The gap between the axial extension portion and the fan in the axial and/or radial direction of the motor is narrow in order to reduce air swirl generated by air flowing from the outlet of the fan to the inlet of the fan through the gap. Preferably, the width of the gap is larger than 0.05 mm and smaller than 2.0 mm. The cooling efficiency of the fan is increased and the performance of the motor is improved.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 30, 2011
    Inventors: James Ching Sik LAU, Xiao Jun Yang, Chun Kei Yu