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WO2001043260A1 - Ponts thermiques pour moteur electrique pourvu d'un carter d'engrenages - Google Patents

Ponts thermiques pour moteur electrique pourvu d'un carter d'engrenages Download PDF

Info

Publication number
WO2001043260A1
WO2001043260A1 PCT/US2000/032933 US0032933W WO0143260A1 WO 2001043260 A1 WO2001043260 A1 WO 2001043260A1 US 0032933 W US0032933 W US 0032933W WO 0143260 A1 WO0143260 A1 WO 0143260A1
Authority
WO
WIPO (PCT)
Prior art keywords
filling material
end surface
motor
thermally conductive
gap filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/032933
Other languages
English (en)
Inventor
Kenneth N. Whaley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ECM Motor Co
Original Assignee
ECM Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ECM Motor Co filed Critical ECM Motor Co
Priority to US09/890,828 priority Critical patent/US6710490B1/en
Priority to EP00980972A priority patent/EP1151520A1/fr
Priority to AU18162/01A priority patent/AU1816201A/en
Publication of WO2001043260A1 publication Critical patent/WO2001043260A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/223—Heat bridges
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks

Definitions

  • the present invention relates to electric motor systems and more particularly to heat transfer methods in electric motor systems.
  • heat sink components to radiate excess heat generated by many electronic and mechanical devices.
  • Such heat sink components typically comprise a large surface area that is mounted directly against a surface area of a device to maximize heat transfer from the device to the heat sink.
  • the method of the invention allows improved heat transfer away from the motor coils and allows a gear case to function as a heat sink.
  • An additional heat sink which may be mounted to an opposite end of a. motor similarly using a thermally conductive gap filler between the heat sink and the motor windings surface provides additional heat transfer away from the motor. Additional heat transfer can be accomplished through the addition of a conductive gap filler.
  • a conductive gap filler "liquid form heat transfer compound" is placed into the gap between the motor and the motor lamination stack.
  • the heat transfer method of the present invention provides sufficient additional cooling to an electric motor so that a small or low performance inexpensive motor complies with the Underwriters Laboratory heat rise specification for use in hospital type beds and assisted chairs.
  • FIG. I is a side section view of a gear case of at least one embodiment of the present invention.
  • FIG. 2 is a front plan view of a gear case of at least one embodiment of the present invention.
  • FIG. 3 is a side section view of a motor and gear case of at least one
  • FIG. 4 is a plan view of a thermal pack according to at least one embodiment of the present invention.
  • FIG. 5 is a side view of a thermal; pad according to at least one embodiment of the present invention.
  • FIG. I that discloses a sectioned side view of a gear case 24 according to the present invention
  • a gap pad area 20 can be seen within a motor mounting area 22 which is capable of receiving one end of an electric motor where motor windings of the electric motor contact the gear case and a gap pad.
  • FIG. 2 a front view of the gap pad area 20 and motor mounting area 22 of a gear case according to at least one embodiment of the present invention can be seen.
  • FIG. 3 discloses a sectioned side view of an electric motor 30, two gap pads 26, 32 and a heat sink 34 according to at least one embodiment of the present invention: a first gap pad 26 can be seen installed between the gear case 24 and a first windings end 28 of an electric motor 30. Further displayed in FIG. 3 is a motor gap 40 that is optionally filled with liquid conductive gap filler forming an intimate contact with the motor and the lamination stack further enhancing heat transfer.
  • FIG. 4 A front view of a gap pad 26, 32 according to at least one embodiment of the present invention is show in FIG. 4.
  • a side view of a gap pad 26, 32 according to at least one embodiment of the present invention is shown in FIG. 5.
  • each gap pad comprises a high performance thermally conductive gap filling material with a thermal conductivity rate at 10 psi of about 3.0 W/m-K.
  • a specific preferred material is supplied by the Bergquist Company and referred to by the trade name Gap Pad ' 3000.
  • the gap pads as used in a preferred embodiment of the present invention have a thickness 36 of about 125
  • Mechanical fasteners typically bolts, secure a motor 30 to a gear case 24 and compress a gap pad 26 in the gap pad area 20 so that a maximum thermal surface is maintained between the motor first windings end surface 28 and the
  • a heat sink 34 may be secured to a motor second end surface 38 whereby a second gap pad 32 is compressed in a second gap pad area between the heat sink 34 and the motor second windings end surface 38 so that a maximum thermal surface is maintained to facilitate a maximum heat flow between the motor second end and the heat sink 34.
  • the preferred embodiment of the invention employs a permanent split capacitor motor for application with a gear case to operate hospital type beds and assisted chairs.
  • the heat transfer method of the invention may be applied to any number of motor designs and applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de dissiper la chaleur provenant de moteurs électriques. Les petits moteurs thermiques fonctionnent souvent à des températures excessivement élevées et sont souvent montés sur des carters d'engrenages. Afin de réduire cette température, on comprime un matériau conducteur thermique pour joints entre les têtes d'enroulement du stator et la surface correspondante du moteur et du carter d'engrenages. Le carter d'engrenages sert de dissipateur thermique pour les enroulements du stator. Des dissipateurs thermiques supplémentaires peuvent être montés sur le carter du moteur à l'aide d'une quantité supplémentaire de matériau pour joints conducteur de chaleur, comprimée entre les autres têtes d'enroulement et le couvercle.
PCT/US2000/032933 1999-12-07 2000-12-05 Ponts thermiques pour moteur electrique pourvu d'un carter d'engrenages Ceased WO2001043260A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/890,828 US6710490B1 (en) 1999-12-07 2000-12-05 Heat bridges for electric motor gear case
EP00980972A EP1151520A1 (fr) 1999-12-07 2000-12-05 Ponts thermiques pour moteur electrique pourvu d'un carter d'engrenages
AU18162/01A AU1816201A (en) 1999-12-07 2000-12-05 Heat bridges for electric motor with a gear case

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16954299P 1999-12-07 1999-12-07
US60/169,542 1999-12-07

Publications (1)

Publication Number Publication Date
WO2001043260A1 true WO2001043260A1 (fr) 2001-06-14

Family

ID=22616137

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/032933 Ceased WO2001043260A1 (fr) 1999-12-07 2000-12-05 Ponts thermiques pour moteur electrique pourvu d'un carter d'engrenages

Country Status (3)

Country Link
EP (1) EP1151520A1 (fr)
AU (1) AU1816201A (fr)
WO (1) WO2001043260A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3297139A1 (fr) * 2016-09-14 2018-03-21 Siemens Aktiengesellschaft Machine rotative electrique
DE102018219837A1 (de) 2018-11-20 2020-05-20 Audi Ag System mit einer Elektromaschine und einem Getriebe
WO2023093050A1 (fr) * 2021-11-24 2023-06-01 广东高标电子科技有限公司 Dispositif d'entraînement central et bicyclette à assistance électrique
EP4340187A3 (fr) * 2022-08-23 2024-07-10 Black & Decker, Inc. Moteur d'entraînement électrique pour appareil mobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149631A (ja) * 1984-08-18 1986-03-11 Mitsubishi Electric Corp キヤンドモ−トル用固定子
WO1988006371A1 (fr) * 1987-02-13 1988-08-25 Mitsubishi Denki Kabushiki Kaisha Demarreur/chargeur pour moteurs
JPH08223866A (ja) * 1995-02-17 1996-08-30 Yaskawa Electric Corp モールドモータ
JPH10290543A (ja) * 1997-04-15 1998-10-27 Toyota Motor Corp モータ
US5959384A (en) * 1998-03-13 1999-09-28 Mfm Technology, Inc. Brushless motor housing assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149631A (ja) * 1984-08-18 1986-03-11 Mitsubishi Electric Corp キヤンドモ−トル用固定子
WO1988006371A1 (fr) * 1987-02-13 1988-08-25 Mitsubishi Denki Kabushiki Kaisha Demarreur/chargeur pour moteurs
JPH08223866A (ja) * 1995-02-17 1996-08-30 Yaskawa Electric Corp モールドモータ
JPH10290543A (ja) * 1997-04-15 1998-10-27 Toyota Motor Corp モータ
US5959384A (en) * 1998-03-13 1999-09-28 Mfm Technology, Inc. Brushless motor housing assembly

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 209 (E - 421) 22 July 1986 (1986-07-22) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3297139A1 (fr) * 2016-09-14 2018-03-21 Siemens Aktiengesellschaft Machine rotative electrique
DE102018219837A1 (de) 2018-11-20 2020-05-20 Audi Ag System mit einer Elektromaschine und einem Getriebe
DE102018219837B4 (de) * 2018-11-20 2020-10-29 Audi Ag System mit einer Elektromaschine und einem Getriebe
WO2023093050A1 (fr) * 2021-11-24 2023-06-01 广东高标电子科技有限公司 Dispositif d'entraînement central et bicyclette à assistance électrique
EP4340187A3 (fr) * 2022-08-23 2024-07-10 Black & Decker, Inc. Moteur d'entraînement électrique pour appareil mobile

Also Published As

Publication number Publication date
EP1151520A1 (fr) 2001-11-07
AU1816201A (en) 2001-06-18

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