Suction Pump Or Fan Patents (Class 310/62)
  • Patent number: 8847446
    Abstract: A rotor arrangement for an electric machine comprises a rotor shaft and a rotor segment coupled to the rotor shaft. The rotor segment includes a main body and a collar integral with the main body. The collar includes an outer peripheral groove adjacent to the main body portion of the rotor segment. The rotor arrangement further includes a cooling fan that has a center opening defined by an inner perimeter. The center opening of the fan is configured to slidably engage the collar and is adjustable between an insertion diameter and a locking diameter. When the center opening is at the locking diameter, at least a portion of the inner perimeter of the fan extends into the outer peripheral groove in the collar such that the fan is retained on the rotor segment.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: September 30, 2014
    Assignee: Remy Technologies LLC
    Inventor: David E. Maley
  • Patent number: 8820692
    Abstract: A motor casing includes a frame assembly and a motor base. The frame assembly includes a frame having an inner face defining an air channel, and a plurality of connection members disposed in the air channel. Each connection member has first and second ends. The first ends of the connection members are coupled to the inner face of the frame. The motor base includes a supporting member and a covering member. The supporting member has an inner surface defining a through-hole, and an outer surface coupled with the second ends of the connection members. An opening portion and a coupling portion are formed at two sides of the through-hole. The covering member is coupled to the opening portion of the supporting member and has first and second surfaces. The first surface faces the through-hole of the supporting member. The covering member includes at least one vent.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: September 2, 2014
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Chia-Chin Wu, Shou-Chien Chang, Hung-Jen Chuan
  • Patent number: 8816544
    Abstract: An electric power tool includes a housing, a brushless motor, an output shaft, and a motor driver circuit. The housing defines an axial direction. The brushless motor is accommodated in the housing and having a drive shaft. The output shaft extends in a direction generally perpendicular to the drive shaft. The motor driver circuit is accommodated in the housing for driving the brushless motor. The housing has a cylindrical shape and has a part functioning as a grip portion.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 26, 2014
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hideyuki Tanimoto, Nobuhiro Takano, Nobuhito Hosokawa
  • Patent number: 8803396
    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: Grant
    Filed: February 24, 2005
    Date of Patent: August 12, 2014
    Assignee: Valeo Equipements Electriques Moteur
    Inventor: Claudiu Vasilescu
  • Publication number: 20140191597
    Abstract: A fully enclosed fan motor assembly includes a motor housing. A stator is located radially inward from the motor housing. A rotor is located radially inward from the stator, and the gap in between the rotor and stator defines a rotor stator gap. A shaft is located radially inward from the rotor. A fin portion extending radially outward from the shaft is used to dissipate heat from the rotor to air drawn through the rotor stator gap and over the fin portion.
    Type: Application
    Filed: January 8, 2013
    Publication date: July 10, 2014
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Publication number: 20140183990
    Abstract: A method and an arrangement for cooling an electric machine, including an electric machine and at least one blower connected to an axle of the electric machine for blowing a cooling agent into the electric machine or for sucking it from the electric machine, wherein the at least one blower is a side channel blower.
    Type: Application
    Filed: March 4, 2014
    Publication date: July 3, 2014
    Applicant: ABB Technology AG
    Inventor: Pekka KANNINEN
  • Patent number: 8760017
    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: Grant
    Filed: July 2, 2011
    Date of Patent: June 24, 2014
    Assignee: Hanning Elektro-Werke GmbH & Co. KG
    Inventors: Thomas Henke, Stefan Rosenau, Hans Teuber, Werner Hangmann
  • Patent number: 8760016
    Abstract: An electric machine includes a casing have a first end plate and a second end plate, the first end plate having an air inlet and the second end plate having an air outlet; an outer rotor positioned inside the casing; a stator positioned inside the outer rotor; a hub positioned inside the stator; a fan positioned within the casing, the fan drawing air from the air inlet and exhausting air out the air outlet.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 24, 2014
    Assignee: Exelis Inc.
    Inventors: Leon Klafter, David C. Wideman, David Butler
  • Patent number: 8753077
    Abstract: A slinger shield structure is provided and includes a first annular disc, having a body, opposing faces defining an aperture extending through the body and through-holes extending through the body, which are arrayed around the aperture, a second annular disc having a body and opposing faces defining an aperture extending through the body, a hub for connection with the first and second annular discs at the respective apertures and radial vanes suspended between the first and second annular discs at a distance from the hub to define radial channels between adjacent radial vanes and drainage channels between the radial vanes and the hub.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: June 17, 2014
    Assignee: General Electric Company
    Inventors: Sanjay Gupta, Subbiah Natarajan, Bansidhar Jagannath Phansalkar
  • Publication number: 20140159516
    Abstract: Disclosed herein is a switched reluctance motor assembly, wherein a lower balancing part, which becomes a target to be cut for balancing, includes a lower balancing part body installed on a lower surface of a rotor part and an encoder protruding on a lower surface of the lower balancing part body. In the present invention, the encoder, which is a portion of a balancing part, becomes a target to be cut, thereby making it possible to more effectively perform balancing even with a smaller amount of cutting as compared with the prior art.
    Type: Application
    Filed: July 2, 2013
    Publication date: June 12, 2014
    Inventors: Jin Su Seok, Jin Wook Baek, Hyun Taek Ahn, Young Bok Yoon
  • Patent number: 8734129
    Abstract: A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a suction inlet connected to the annular space outlet and a pressure outlet. The liquid to be transported by the pump can be supplied to the annular space inlet. The cooling housing, on its inside, has at least one flow guide rib for guiding the liquid within the annular space. In order to ensure that no liquid can leak out of the annular space even in the long term, the at least one flow guide rib is spaced-apart from the motor housing.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: May 27, 2014
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Walter Schiffhauer, Dieter Plachke, Lanfranco Pol
  • Patent number: 8729751
    Abstract: A motor driven assembly comprises a motor shaft, a rotor, a passage, and a corrugated fin heat transfer structure. The motor shaft is mounted for rotation about a rotational axis. The rotor is located radially about the shaft. The passage extends through the rotor alongside the motor shaft. The corrugated fin heat transfer structure is disposed within the passage radially aligned with the rotor.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: May 20, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Robert Telakowski, Debabrata Pal
  • Patent number: 8723468
    Abstract: A motor having a first portion configured to turn in a forward direction, a second portion coaxially mirrors the first portion; and a central fan between the first and second portions, and forcing air through the portions. A thermoelectric cooler element, thermally coupled to the portion is configured to cool the motor. A motor controller is electrically coupled to the first and second portions, and operates a portion in response to a condition sensed by the motor controller. The condition sensed by the motor controller is a motor torque, a motor speed, a motor casing temperature, or a zoned motor casing temperature. A method includes detecting a motor operational command; selecting a motor operational state using motor portion responsive to the motor command; sensing a heating state of a motor portion; and providing a cooling state to the motor portion responsive to the heating state.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 13, 2014
    Assignee: Aurora Office Equipment Co., Ltd.
    Inventor: John O'Rourke
  • Publication number: 20140111042
    Abstract: An embodiment of the invention relates to a housing unit for an electric machine, including at least one housing and at least one flow device for generating at least one first flow of a fluid, the flow device being arranged inside the at least one housing. According to an embodiment of the invention, the at least one flow device includes at least one fan, which has at least one opening and a Coanda surface, wherein the Coanda surface is arranged in the region of the opening, whereby the first flow of the fluid exits from the at least one opening in a predetermined direction and whereby at least one component, which can be arranged in the housing, can be subjected to incident blowing in a targeted manner.
    Type: Application
    Filed: May 18, 2012
    Publication date: April 24, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Rainer Hartig
  • Patent number: 8698362
    Abstract: The invention relates to an electric machine tool, particularly an angle grinder, having an electric motor that can be forcibly cooled by a cooling air flow. The electric motor includes an armature and a field iron package disposed concentrically to the armature which are disposed in a cooling air flow. The invention proposes that the armature and the field iron package be disposed in series in the cooling air flow.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: April 15, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Florian Esenwein, Peter Wassermann
  • Publication number: 20140084717
    Abstract: In a brushless motor, a rotor core is fixed to a shaft. Through holes are formed in the rotor core, and permanent magnets are inserted to be fixed in place in the through holes. A stator core is fixed to an outer circumferential surface of the rotor core such that the stator core faces the outer circumferential surface of the rotor core. Stator coils are provided on the stator core via insulators so as to configure magnetic flux generating portions. A cooling fan is provided in front of a stator which is configured by the stator core and the stator coils. Axial position of blades of the fan and axial positions of the rotor core and the permanent magnets partially overlap each other in their positions.
    Type: Application
    Filed: August 5, 2013
    Publication date: March 27, 2014
    Applicant: HITACHI KOKI CO., LTD.
    Inventors: Hayato Yamaguchi, Hideyuki Tanimoto
  • Publication number: 20140034766
    Abstract: A paper shredder motor cooling assembly having a paper shredder motor coupled to a fan shaft, an enclosure surrounding the paper shredder motor and having selected input and selected output vents to control airflow to the paper shredder motor, a fan coupled to the fan shaft, communicating with the selected input vents or the selected output vents; when the paper shredder motor is operating, the rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents, removing heat from the motor. A duty cycle of greater than 15 minutes is obtained. The fan can be coupled to the motor by speed increasing gearing, attached to the cutter blade assembly, such that the fan turns faster than the motor. The fan also can be attached to the motor shaft. An input fan and an output fan can be used.
    Type: Application
    Filed: February 19, 2013
    Publication date: February 6, 2014
    Applicant: Aurora Office Equipment Co., Ltd Shanghai
    Inventors: Kiapin Li, Zhankai Yang, Yung Kang Tso, Bin Zhang
  • Publication number: 20140028125
    Abstract: To provide an outer rotor type motor configured so that the lead wires of the winding coils for the stators are routed simply. An outer rotor type motor is provided with stators arranged in the axial direction, a rotor supported so as to rotate around the stators, a drive shaft provided integrally with the rotor, winding coils respectively wound on the stators, and magnets affixed to the rotor so as to respectively correspond to the stators. The outer rotor type motor is configured so that the rotor and the drive shaft are rotated by the magnetic action between the winding coils and the magnets. A penetration portion extending in the axial direction is provided in at least one of the stators, and the lead wires of the winding coils are inserted through the penetration portion and led to the outside.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: NAMIKI SEIMITSU HOUSEKI KABUSHIKI KAISHA
    Inventor: Kazuo ARAI
  • Patent number: 8630095
    Abstract: A linked semiconductor module unit links a plurality of semiconductor modules by a first bus bar and a second bus bar, which are embedded in resin parts. The linked semiconductor module unit is disposed in a place other than on a printed circuit board. The semiconductor module linking structure is implemented readily by molding the bus bars together with semiconductor chips and lands to form the resin parts.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: January 14, 2014
    Assignee: Denso Corporation
    Inventors: Hideki Minato, Hideki Kabune, Atsushi Furumoto
  • Patent number: 8629590
    Abstract: A rotor of an electric motor has a carrier structure including a disc portion to which is centrally connected a shaft, and the periphery of which is joined to an essentially cylindrical annular skirt portion which in use extends coaxially around the stator. The disc portion has a plurality of slots between which there is defined a corresponding plurality of spokes. At least some of the spokes have, in a circumferential direction, a transverse cross-section shaped in a manner to induce, at least when the rotor rotates in one direction, an at least approximately axial air flow through corresponding slots.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: January 14, 2014
    Assignee: Gate S.R.L.
    Inventor: Luciano Marchitto
  • Patent number: 8629588
    Abstract: The present invention relates to an apparatus for generating power by a direct current supply brush that rotates with a field pole generator, the apparatus comprising: a field pole generator which has a plurality of iron cores having a coil or wire wound around; a winding wire used for power generation, the winding wire being formed in such a manner as to wind around the field pole generator; a commutator which is disposed at one end of the field pole generator and has a plurality of commutator segments arranged in a circular shape; a rotating body which has a direct current supply brush adhered to the outer surface of the commutator; a motor for rotating the rotating body; a slip ring secured to a shaft of the motor; and a direct current supply unit for supplying direct current power to the slip ring.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: January 14, 2014
    Inventor: Jae-Soon Park
  • Publication number: 20130342051
    Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.
    Type: Application
    Filed: August 23, 2013
    Publication date: December 26, 2013
    Applicant: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Stephen Thomas English, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, John R. Belko
  • Patent number: 8598751
    Abstract: An air-cooled generator may be provided with a centrifugal blower configured for rotation on a shaft of the generator. The centrifugal blower may have an axially oriented outlet. An impeller of the blower may have blades with trailing edges oriented at an angle between 80° to about 90° relative to an axis of the shaft of the generator.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: December 3, 2013
    Assignee: Honeywell International Inc.
    Inventor: Frank Lin
  • Patent number: 8593022
    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: Grant
    Filed: December 29, 2010
    Date of Patent: November 26, 2013
    Assignee: Johnson Electric S.A.
    Inventors: James Ching Sik Lau, Xiao Jun Yang, Chun Kei Yu
  • Patent number: 8587165
    Abstract: A cooled fan motor may include a tankhead, an elongate housing attached to the tankhead and, 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 the tankhead, 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; whereby air external to the motor is able to enter through the gap, flow along the air passage and exit the motor through the opening in the hub, thereby cooling an interior of the motor.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: November 19, 2013
    Assignee: Dayton-Phoenix Group, Inc.
    Inventors: Joseph A. Zahora, Harley J. Weldy
  • Patent number: 8531065
    Abstract: An electric motor has a stator bushing in which components that generate heat are disposed. A rotor housing that has at least one air conveying element is rotatably connected to the stator bushing. The air conveying element has a top side that is facing the stator bushing and that is at least basically smooth. The air conveying element has an annular disk that is provided with the basically smooth top side. The air conveying element has flow guiding elements that are radially extending ribs provided on the bottom side of the annular disk.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: September 10, 2013
    Assignee: Ziehl-Abegg AG
    Inventors: Joachim Knorr, Thorsten Sturm
  • Patent number: 8519582
    Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Stephen Thomas English, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, Stephanie Marie Belko
  • Patent number: 8508084
    Abstract: An electric motor for use with a power tool includes a motor housing having a first end and an open second end, a first bearing coupled to the first end of the motor housing, a plurality of magnets coupled to the motor housing, and an armature having a first end and a second end. The first end of the armature is rotatably supported by the first bearing. The second end of the armature protrudes from the open second end of the motor housing without being supported by the open second end of the motor housing. The electric motor also includes a second bearing coupled to the second end of the armature. The motor housing is supportable by a first portion of the power tool housing. The second bearing is supportable by a second portion of the power tool housing.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: August 13, 2013
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Roger G. Satterfield, Stephen C. Hembroff
  • Patent number: 8482169
    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, a through bolt, and a housing with at least two removably-coupled frame members. Each of the at least two removably-coupled frame members include an inner wall, an outer wall, a coolant cavity defined between the inner wall and the outer wall, and a bolt channel. The coolant cavity can be positioned substantially around at least one of the stator end turns radially. The bolt channel can be positioned through a portion of each of the at least two removably-coupled frame members and can be located radially inward from an outer substantially circular periphery of the housing.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: July 9, 2013
    Assignee: Remy Technologies, LLC
    Inventor: Michael D. Bradfield
  • Publication number: 20130169082
    Abstract: Disclosed herein is a fan motor assembly. A motor includes a rotor unit and a stator unit. An impeller is provided on an upper end of a motor shaft of the motor. The impeller is rotated by the motor to suck air. The impeller includes a pair of plates that face each other, and a plurality of blades that are disposed between the plates at positions spaced apart from each other at regular intervals. A diffuser is disposed around an outlet formed in a periphery of the impeller. A motor housing encases the rotor unit and the stator unit therein. A sensing unit is provided on a lower end of the motor shaft that extends outwards from the motor housing. The sensing unit senses the rotation of the rotor unit. An inductor is installed in the motor housing.
    Type: Application
    Filed: April 4, 2012
    Publication date: July 4, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Su Bong Jang, Han Kyung Bae, Hee Soo Yoon, Jin Su Seok, Sang Jong Lee, Young Bok Yoon, Tae Ho Yun
  • Publication number: 20130162070
    Abstract: An AC low-voltage induction motor contains a rotor having a central shaft; a stator having a plurality of silicon steel pieces and a number of coil sets, each silicon steel piece having a groove to receive the coil set; a number of supports inserted into four corners of a front cover and four corners of a rear cover to connect the rotor, the stator, and a fan together; wherein a diameter and a number of the coil set is capable of determining a supply amount of a working voltage.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Inventors: HUAN-CHING TSENG, Chiun-Liang Tsai, Chun-Hsin Tsai
  • Patent number: 8461733
    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: Grant
    Filed: July 29, 2010
    Date of Patent: June 11, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Takechi, Dai Nakajima, Hitoshi Isoda, Masahiko Fujita
  • Patent number: 8450891
    Abstract: A device for rectifying the current of a rotary electric machine comprising a bearing (50) with through openings (51) for a coolant, that comprises at least one module (100) including a holder (10, 16) for holding current rectifying members (93, 94) having the same phase as the machine, said holder (10, 16) including a heat sink (16) with vanes (18) at least partially covering an opening (51) in the bearing (50). A rotary electric machine including such a current rectifying device. Application: alternators of automotive vehicles with internal ventilation.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 28, 2013
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Olivier Gas, Fabrice Tauvron, Marc Tunzini, Régis Seidenbinder
  • Patent number: 8450889
    Abstract: A high speed electric motor for use in a variety of applications. The electric motor an electric motor including a motor housing or stator, a rotor having a commutator and brushes for contacting the commutator at a predefined area known as the contact area. Additionally, the motor includes a forced air cooling assembly. The forced air cooling assembly includes a centrifugal fan for creating air flow, a manifold for accelerating the air flow. The manifold having exit ports and the exit ports being positioned directly over the contact area for directing the accelerated air flow at the contact area and the motor housing having at least one opening aligned with the contact area and at least a second opening defining an exit vent. Additionally, a method of cooling the motor in accordance with the invention is also disclosed.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 28, 2013
    Assignee: Jet Motor Limited
    Inventor: Wing-kin Hui
  • Publication number: 20130113312
    Abstract: A rotor arrangement for an electric machine comprises a rotor shaft and a rotor segment coupled to the rotor shaft. The rotor segment includes a main body and a collar integral with the main body. The collar includes an outer peripheral groove adjacent to the main body portion of the rotor segment. The rotor arrangement further includes a cooling fan that has a center opening defined by an inner perimeter. The center opening of the fan is configured to slidably engage the collar and is adjustable between an insertion diameter and a locking diameter. When the center opening is at the locking diameter, at least a portion of the inner perimeter of the fan extends into the outer peripheral groove in the collar such that the fan is retained on the rotor segment.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Applicant: REMY TECHNOLOGIES, LLC
    Inventor: David E. Maley
  • Publication number: 20130106211
    Abstract: Electrical machine rotors (R) suited for synchronous motors of electric vehicle drives. A rotor (R) includes a rotor shaft (8), a sheet stack (3), windings, and a restraining system (2) with support elements. The support elements of the restraining system include support rings (7) to protect winding heads (4) projecting from the sheet stack (3) in the axial direction against radial stresses. The elements of the restraining system (2) protecting the winding heads (4) from stresses also include axially inner end caps (6) configured as supports for the finished winding heads (4) in the operating state, and as guides and supports during the winding of the pole windings of the rotor (R) about the axial edge of the sheet stack (3). The axially outer support rings (7) cooperate with the axially inner end caps (6) so that the support rings (7) may absorb centrifugal forces acting on winding heads (4) end caps (6).
    Type: Application
    Filed: July 14, 2011
    Publication date: May 2, 2013
    Applicant: BRUSA ELEKTRONIK AG
    Inventor: Andreas Holzner
  • Patent number: 8421285
    Abstract: For providing a permanent magnet type generator that has a limited inside temperature rise gradient even if the capacity thereof is increased and permits to reduce the size thereof, the present invention provides a ventilation means that increases the inner gas (air or cooling wind) quantity that is caused circulated via the heat exchanger causing to flow outer air is increased more at a region facing the outer air exhaust side in the heat exchanger than at the outer air inlet side.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: April 16, 2013
    Assignee: Hitachi, Ltd
    Inventors: Daisuke Kori, Akiyoshi Komura, Masahiro Hori
  • Patent number: 8410645
    Abstract: A power tool has a casing and a motor assembly installed in the casing. The motor assembly comprises a motor and a heat dissipation device. The motor comprises a housing and magnets or windings disposed at an inner surface of the housing. The heat dissipation device is arranged at an outer surface of the housing and a window is formed in the casing to expose the heat dissipation device. Preferably, the heat dissipation device comprises an annular heat absorbing section fitted to a radially outer surface of the motor housing and a plurality of fins extending from the heat absorbing section and into the window.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: April 2, 2013
    Assignee: Johnson Electric S.A.
    Inventor: James Ching Sik Lau
  • Patent number: 8403653
    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: Grant
    Filed: June 11, 2008
    Date of Patent: March 26, 2013
    Assignee: Nidec Corporation
    Inventors: Masato Yamamoto, Kenichi Tanaka, Ken Adachi
  • Patent number: 8390161
    Abstract: A motor includes a shaft that extends along a rotational axis and an end frame that includes a first surface that is substantially normal to the axis. A first plurality of annular features are arranged concentrically about the rotational axis and coupled to the first surface. A fan is mounted to the rotating shaft and including a slinger portion and a second surface. A second plurality of annular features are arranged concentrically about the rotational axis and coupled to the second surface. The first plurality of annular features cooperate with the second plurality of annular features to form a non-contact seal between the fan and the end frame.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: March 5, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Matthew W. Critchley, Frank E. Staigl, III
  • Publication number: 20130026868
    Abstract: An electric machine includes a casing have a first end plate and a second end plate, the first end plate having an air inlet and the second end plate having an air outlet; an outer rotor positioned inside the casing; a stator positioned inside the outer rotor; a hub positioned inside the stator; a fan positioned within the casing, the fan drawing air from the air inlet and exhausting air out the air outlet.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: ITT MANUFACTURING ENTERPRISES, INC.
    Inventors: Leon Klafter, David C. Wideman, David Butler
  • Patent number: 8362661
    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: Grant
    Filed: October 6, 2010
    Date of Patent: January 29, 2013
    Assignee: General Electric Company
    Inventors: Mark John DeBlock, Blake Weldon Wilson, Thomas Mancuso, Lakshminarayana Kanakamedala
  • Publication number: 20130015734
    Abstract: A magnetic coupler comprises a magnet rotor that includes a permanent magnet; a conductor rotor that includes a non-ferrous electroconductive plate; and a fan mounted on one of the magnet rotor and the conductor rotor, wherein the fan is designed to blow air into the magnetic coupler during operation. The permanent magnet of the magnet rotor is spaced by an air gap from the electroconductive plate of the conductor rotor.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 17, 2013
    Applicant: MaxForce Energy Technologies Co., Ltd.
    Inventors: Chang-Shou Liu, Song Zhu
  • Publication number: 20130009497
    Abstract: A motor housing has a heat-dissipating casing having an outer casing and an inner casing. The outer casing is tubular and has an inner surface. The inner casing is tubular, is co-axially mounted in the outer casing and has multiple fins and multiple baffle ribs. The fins are formed on and protrude radially from an outer surface of the inner casing. The baffle ribs are formed on and protrude radially from the outer surface of the inner casing and are connected to the inner surface of the outer casing to form multiple air passages between the inner surface of the outer casing and the outer surface of the inner casing. Each baffle rib has two ends and a front threaded hole and a rear threaded hole defined respectively in the ends of the baffle rib.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 10, 2013
    Inventors: Chin-Feng Chang, Chi-Lung Chang, Cheng-Hui Huang, Ming-Cheng Lin
  • Patent number: 8350423
    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: July 11, 2011
    Date of Patent: January 8, 2013
    Assignee: Nidec Motor Corporation
    Inventors: Jose L. Vadillo, Raymond D. Heilman, Donald E. Morgan
  • Patent number: 8348727
    Abstract: The present invention is directed to an airflow generation and particle dispersion arrangement for a power tool (e.g., an angle grinder). The arrangement includes a motor, an airflow generation assembly, and a particle dispersion assembly. The airflow generation assembly includes a fan driven by the motor. When engaged, the driven fan generates an airstream that is drawn through the power tool. The particle dispersion assembly includes a passive fan that is not driven by the motor, but instead is driven by the airstream. In operation, the passive fan generates centrifugal and mechanical forces sufficient to remove particles from intake air passing through the particle dispersion assembly.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: January 8, 2013
    Assignee: Black & Decker Inc.
    Inventors: Paul K. Trautner, Phillip T. Miller, William F. Gallagher, Michael C. Doyle
  • Patent number: 8338994
    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: Grant
    Filed: January 9, 2009
    Date of Patent: December 25, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventor: Hideyuki Tanimoto
  • Publication number: 20120313466
    Abstract: A drive motor, in particular for a fan wheel of a radiator of a motor vehicle, is provided. The drive motor comprising a stator, and a rotor rotating about an axis of rotation relative to the stator, which is driven in cooperation with the stator. Means for generating an air flow for cooling at least one component of the drive motor are arranged on the rotor.
    Type: Application
    Filed: November 23, 2009
    Publication date: December 13, 2012
    Inventors: Horst Eisert, Detlef Kemmer
  • Publication number: 20120306300
    Abstract: Vehicle AC generator comprises a stator comprising stator windings; front frame and rear frame, each rotatably supporting a rotor in the stator via a space on an inner circumference thereof; cooling fan fitted to the rotor; first polarity arm configured to rectify a current of one polarity; second polarity arm configured to rectify a current of another polarity; rectifier device configured to rectify an alternating current generated in stator windings; protective cover covering rectifier device. Rectifier device comprises first heat dissipating plate having rectifier elements forming first polarity arm, second heat dissipating plate rectifier elements forming second polarity arm, and connection plate formed in waveform-like shape and disposed between the first and second heat dissipating plates, and passage of a cooling air blown by the cooling fan formed between first heat dissipating plate and connection plate and between second heat dissipating plate and connection plate.
    Type: Application
    Filed: August 13, 2010
    Publication date: December 6, 2012
    Inventors: Toshio Ishikawa, Yosuke Umesaki, Mitsuaki Izumi, Naoyuki Taguchi, Tsuyoshi Harada
  • Patent number: 8324766
    Abstract: A heat-dissipation structure for a motor. The heat-dissipation structure comprises a shaft, a seat and a rotator. The rotator coupled to the seat by the shaft comprises a housing and a cover. The housing comprises an inner side connected to the shaft and a bottom comprising at least one through hole. The cover is connected to an exterior of the bottom of the housing and a distance is formed between the cover and the housing, so that the cover prevents objects from entering the through hole.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: December 4, 2012
    Assignee: Delta Electronics, Inc.
    Inventors: Hung-Chi Chen, Ying-Chi Chen, Te-Tsai Chuang, Kuo-Cheng Lin, Wen-Shi Huang