US20160238030A1 - Motor with heat dissipation structure - Google Patents

Motor with heat dissipation structure Download PDF

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Publication number
US20160238030A1
US20160238030A1 US15/018,518 US201615018518A US2016238030A1 US 20160238030 A1 US20160238030 A1 US 20160238030A1 US 201615018518 A US201615018518 A US 201615018518A US 2016238030 A1 US2016238030 A1 US 2016238030A1
Authority
US
United States
Prior art keywords
opening
motor
hollow hood
cylindrical housing
upstream
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.)
Abandoned
Application number
US15/018,518
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English (en)
Inventor
Wen-San Chou
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20160238030A1 publication Critical patent/US20160238030A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
    • H02K9/16—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the cooling medium circulates through ducts or tubes within the casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

Definitions

  • the present invention relates to a motor and, more particularly, to a motor with a heat dissipation structure capable of restraining temperature therein, wherein the motor is provided with a hollow hood at its housing for collecting the air current generated by a cooling fan provided at a rotating shaft of the motor, wherein one portion of the hollow hood is located above at least one upstream through hole of the motor's housing, so that the air current can quickly enter the housing via the upstream through hole to dissipate heat therein, and thus the performance and service life of the motor can be increased.
  • motors are widely used in industry for providing mechanical power.
  • the rotor assembly including an armature core formed by an iron core wound with enameled wire, a commutator, a brush unit, etc.
  • the magnets in the motor's housing will generate heat and thus cause a temperature rise.
  • the heat accumulated in the motor's housing may cause the brush unit to contain more carbon deposits, thus affecting the electrical circuit of the motor.
  • high temperature resulting from the armature core may reduce the magnetic intensity of the magnets used in the motor. Thus, the performance of the motor will be gradually reduced.
  • emergency repair kits which are commonly used in daily life, employ a low-power motor to drive a compressor unit therein for repairing punctured tires.
  • the Traffic Act stipulates that, when a tire being punctured happens to a vehicle on a highway, the driver should repair the punctured tire within a specified period and should immediately drive away after the repair is completed to prevent rearward bump.
  • the motor of the compressor unit of an emergency repair kit should be operated at a higher speed.
  • the performance of the motor will decrease. Even worse, the enameled wire of the armature core will probably be damaged to cause a short circuit, and thus the motor may burn out.
  • a motor is usually installed with a cooling fan at its output shaft.
  • the airflow induced by the cooling fan can only flow along the outer surface of the motor's housing.
  • the heat generated by the armature core, especially the enameled wire, in the motor is not easy to be taken away.
  • the problem of a motor being subject to heat accumulation has not yet been overcome.
  • One object of the present invention is to provide a motor with a heat dissipation structure, wherein the housing of the motor is provided with a hollow hood for collecting the air current generated by a cooling fan provided at a rotating shaft of the motor.
  • the housing defines at least one upstream through hole and at least one downstream through hole.
  • the hollow hood is mounted to the housing such that a head portion thereof is located above the upstream through hole.
  • the air current can be effectively collected by the hollow hood to enter the housing via the upstream through hole and finally to go out of the housing via the downstream through hole, so that the heat generated by the rotor assembly in the housing can be quickly taken away.
  • heat is not easy to accumulate in the housing, maximum power output of the motor can be achieved, and the performance and service life of the motor can be increased.
  • FIG. 1 shows a 3-dimensional view of a motor according to one embodiment of the present invention.
  • FIG. 2 shows a 3-dimensional view of the motor, which is viewed from a different angle than FIG. 1 .
  • FIG. 3 shows a partially exploded view of the motor.
  • FIG. 4 shows a plan view of the motor.
  • FIG. 5 shows a sectional view of the motor taken along line A-A in FIG. 4 , wherein the air current generated by a cooling fan is demonstrated.
  • FIG. 6 shows a sectional view of the motor taken along line B-B in FIG. 4 , wherein the air current generated by the cooling fan is demonstrated.
  • FIG. 7 shows a sectional view of the motor taken along line C-C in FIG. 4 , wherein the air current generated by the cooling fan is demonstrated.
  • a motor which includes a cylindrical housing 1 , in which a rotor assembly and two opposite magnets 12 are provided.
  • the rotor assembly includes a rotating shaft 16 , an armature core formed by an iron core 171 wound with enameled wire 172 , and a commutator 173 .
  • the two opposite magnets 12 are provided at an inner surface of the cylindrical housing 1 .
  • the housing 1 has a circumferential wall which terminates at a flat closure wall 101 (a front end of the motor).
  • the flat closure wall 101 is provided with a first bearing 11 at its center and defines a plurality of downstream through holes 103 around the first bearing 11 .
  • a first end of the rotating shaft 16 is mounted to the first bearing 11 (see FIG. 2 ).
  • the circumferential wall of the housing 1 defines a plurality of upstream through holes 10 for allowing outside air to enter the housing 1 .
  • a sleeve 3 which is made of a magnetically permeable metal, is closely fitted around the cylindrical housing 1 , so as to increase the performance of the motor.
  • a cover 2 is provided with a second bearing 21 at its center and mounted to a rear end of the housing 1 opposite to the flat closure wall 101 .
  • a second end of the rotating shaft 16 of the rotor assembly is mounted at the second bearing 21 (see FIG. 1 ).
  • a cooling fan 4 is installed to the second end of the rotating shaft 16 of the rotor assembly, near the cover 2 .
  • the cover 2 defines a plurality of air inlets 22 , 23 , which allow outside air to enter the housing 1 to dissipate heat therein.
  • a primary feature of the present invention is that a hollow hood 5 is provided at a front portion of the cylindrical housing 1 near the cooling fan 4 for collecting the air current generated by the cooling fan 4 .
  • the hollow hood 5 has a neck portion 51 , a head portion 52 , and a gradually enlarged transitional portion between the neck portion 51 and the head portion 52 , wherein the neck portion 51 opens out at a first opening 510 while the head portion 52 opens out at a second opening 520 which is opposite to the first opening 510 .
  • the hollow hood 5 is mounted to the cylindrical housing 1 such that the neck portion 51 is closely fitted around the cylindrical housing 1 while the head portion 52 is located above the through holes 10 , thus defining an annular air-guiding channel 6 therebetween which communicates with the through holes 10 , and forming an intercepting surface 7 at an inner surface of the gradually enlarged transitional portion of the hollowing hood 5 .
  • the hollow hood 5 is a bell-shaped body, so that the annular air-guiding channel 6 has a cross-sectional dimension which increases gradually as extending from the intercepting surface 7 to the second opening 520 of the hollow hood 5 . In this embodiment, as shown in FIG.
  • the hollow hood 5 can be mounted to the cylindrical housing 1 via the first opening 510 , wherein the neck portion 51 of the hollow hood 5 is closed fitted around the front portion of the cylindrical housing 1 ; the head portion 52 is located above the cylindrical housing 1 and the upstream through holes 10 and thus is not in contact with the cylindrical housing 1 .
  • the annular air-guiding channel 6 is defined between the head portion 52 of the hollow hood 5 and the cylindrical housing 1 , and the through holes 10 are located between the intercepting surface 7 and the second opening 520 of the hollow hood 5 , so that the air current can pass through the annular air-guiding channel 6 and the through holes 10 to enter the cylindrical housing 1 to take away the heat generated therein.
  • the intercepting surface 7 of the hollow hood 5 can intercept the air current entering the annular air-guiding channel 6 to facilitate it to pass through the through holes 10 to enter the housing 1 .
  • the air current can flow out of the housing 1 via the downstream through holes 103 , so that heat is not easy to accumulate in the housing 1 and thus the service life of the motor can be increased.
  • the diameter of the cooling fan 4 is larger than that of the second opening 520 of the hollow hood 5 , some of the air current generated by the cooling fan 4 may pass over the hollow hood 5 to flow along the outer surface of the circumferential wall of the cylindrical housing 1 and the sleeve 3 to cool down the housing 1 (see FIG. 5 ).
  • the hollow hood 5 of the motor of the present invention can effectively collect the air current generated by the cooling fan 4 , so that the air current can quickly enter the cylindrical housing 1 via the upstream through holes 10 to dissipate the heat generated therein. As such, heat is not easy to accumulate in the housing and thus the performance and service life of the motor can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US15/018,518 2015-02-13 2016-02-08 Motor with heat dissipation structure Abandoned US20160238030A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW104105158A TWI584561B (zh) 2015-02-13 2015-02-13 馬達之散熱構造
TW104105158 2015-02-13

Publications (1)

Publication Number Publication Date
US20160238030A1 true US20160238030A1 (en) 2016-08-18

Family

ID=55527232

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/018,518 Abandoned US20160238030A1 (en) 2015-02-13 2016-02-08 Motor with heat dissipation structure

Country Status (9)

Country Link
US (1) US20160238030A1 (ja)
EP (1) EP3056738B1 (ja)
JP (2) JP3203903U (ja)
KR (1) KR101790636B1 (ja)
CN (2) CN105896823A (ja)
DK (1) DK3056738T3 (ja)
HU (1) HUE051092T2 (ja)
PL (1) PL3056738T3 (ja)
TW (1) TWI584561B (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170126100A1 (en) * 2015-11-04 2017-05-04 Wen-San Chou Motor structure capable of dissipating heat therein
US20170126099A1 (en) * 2015-11-02 2017-05-04 Wen-San Chou Electric Motor Capable of Dissipating Heat Therein
EP3300186A1 (en) * 2016-09-22 2018-03-28 GE Renewable Technologies Combined cooling and dust extrusion device and method
CN111516554A (zh) * 2020-05-07 2020-08-11 苏州玲珑汽车科技有限公司 汽车热管理智能散热器模组及汽车
US11300130B2 (en) * 2017-06-20 2022-04-12 Dyson Technology Limited Electric machine
US11549513B2 (en) * 2017-06-20 2023-01-10 Dyson Technology Limited Compressor
CN117081305A (zh) * 2023-08-23 2023-11-17 玉柴芯蓝新能源动力科技有限公司 电机散热结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018207576A (ja) * 2017-05-31 2018-12-27 日本電産株式会社 モータ、送風装置、および掃除機
JP2020054153A (ja) * 2018-09-27 2020-04-02 株式会社ケーヒン モータ
CN110868017B (zh) * 2019-12-06 2020-11-20 温州澳鼎建材有限公司 一种运作自启散热的双向离合马达
CN114856270B (zh) * 2022-03-14 2024-04-05 福建大成电机集团有限公司 一种发电机房及其配合该发电机房使用的冷却装置

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US3274410A (en) * 1962-12-21 1966-09-20 Electrolux Ab Cooling arrangement for motorfan unit
US3749949A (en) * 1971-08-04 1973-07-31 Arnold Mueller Variable-speed asynchronous motor with multiple rotors
US3848145A (en) * 1973-01-22 1974-11-12 Robbins & Myers Electric motor ventilation
US4092556A (en) * 1974-08-24 1978-05-30 Mabuchi Motor Co., Ltd. Forced cooled electric motor
US5375651A (en) * 1991-04-03 1994-12-27 Magnetek Universal Electric Draft inducer blower motor mounting and cooling construction
US6570276B1 (en) * 1999-11-09 2003-05-27 Alstom Ventilation device and rail traction electric motor equipped with such a device
WO2005031948A1 (en) * 2003-10-01 2005-04-07 Abb Ab An electrical rotating machine
US20080303360A1 (en) * 2007-06-11 2008-12-11 Hewlett-Packard Development Company L.P. Insulated bearing motor assembly
US20090091211A1 (en) * 2007-10-08 2009-04-09 Huan Wen Jun Electric motor
US7591063B2 (en) * 2001-01-09 2009-09-22 Black & Decker Inc. Method of making an armature
US20100026112A1 (en) * 2008-08-04 2010-02-04 Wen Liang Li Electric motor
US7804208B2 (en) * 2007-12-14 2010-09-28 Hui Wing-Kin Method and structure for cooling an electric motor
US8338994B2 (en) * 2008-01-15 2012-12-25 Hitachi Koki Co., Ltd. Power tool
US20130011283A1 (en) * 2011-07-08 2013-01-10 Wen-San Chou Air Compressor
US20160056682A1 (en) * 2014-08-22 2016-02-25 Regal Beloit America, Inc. Stator, electric machine and associated method
US9391493B2 (en) * 2009-09-29 2016-07-12 Regal Beloit America, Inc. Air cooled electric motor

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US3021442A (en) * 1958-12-26 1962-02-13 Ford Motor Co Dynamoelectric machine
TWM284136U (en) * 2005-09-02 2005-12-21 Shr-Yin Jang Heat dissipating structure in a motor
TWM435779U (en) * 2008-06-20 2012-08-11 chun-ling Yang Cooling system of rotational machine
TW201141364A (en) * 2010-05-05 2011-11-16 Hon Hai Prec Ind Co Ltd Heat dissipating system for server
CN102510137B (zh) * 2011-10-25 2015-05-27 捷和电机（深圳）有限公司 磁性构件、马达及包括该马达的吊扇
CN102611235A (zh) * 2012-03-26 2012-07-25 张家港朗信电气有限公司 汽车散热器风扇电机用定子机壳

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274410A (en) * 1962-12-21 1966-09-20 Electrolux Ab Cooling arrangement for motorfan unit
US3749949A (en) * 1971-08-04 1973-07-31 Arnold Mueller Variable-speed asynchronous motor with multiple rotors
US3848145A (en) * 1973-01-22 1974-11-12 Robbins & Myers Electric motor ventilation
US4092556A (en) * 1974-08-24 1978-05-30 Mabuchi Motor Co., Ltd. Forced cooled electric motor
US5375651A (en) * 1991-04-03 1994-12-27 Magnetek Universal Electric Draft inducer blower motor mounting and cooling construction
US6570276B1 (en) * 1999-11-09 2003-05-27 Alstom Ventilation device and rail traction electric motor equipped with such a device
US7591063B2 (en) * 2001-01-09 2009-09-22 Black & Decker Inc. Method of making an armature
WO2005031948A1 (en) * 2003-10-01 2005-04-07 Abb Ab An electrical rotating machine
US20080303360A1 (en) * 2007-06-11 2008-12-11 Hewlett-Packard Development Company L.P. Insulated bearing motor assembly
US20090091211A1 (en) * 2007-10-08 2009-04-09 Huan Wen Jun Electric motor
US7804208B2 (en) * 2007-12-14 2010-09-28 Hui Wing-Kin Method and structure for cooling an electric motor
US8450889B2 (en) * 2007-12-14 2013-05-28 Jet Motor Limited Method and structure for cooling an electric motor
US8338994B2 (en) * 2008-01-15 2012-12-25 Hitachi Koki Co., Ltd. Power tool
US20100026112A1 (en) * 2008-08-04 2010-02-04 Wen Liang Li Electric motor
US9391493B2 (en) * 2009-09-29 2016-07-12 Regal Beloit America, Inc. Air cooled electric motor
US20130011283A1 (en) * 2011-07-08 2013-01-10 Wen-San Chou Air Compressor
US20160056682A1 (en) * 2014-08-22 2016-02-25 Regal Beloit America, Inc. Stator, electric machine and associated method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170126099A1 (en) * 2015-11-02 2017-05-04 Wen-San Chou Electric Motor Capable of Dissipating Heat Therein
US20170126100A1 (en) * 2015-11-04 2017-05-04 Wen-San Chou Motor structure capable of dissipating heat therein
US10355560B2 (en) * 2015-11-04 2019-07-16 Wen-San Chou Motor structure capable of dissipating heat therein
EP3300186A1 (en) * 2016-09-22 2018-03-28 GE Renewable Technologies Combined cooling and dust extrusion device and method
US10931173B2 (en) 2016-09-22 2021-02-23 Ge Renewable Technologies Combined cooling and dust extrusion device and method
US11300130B2 (en) * 2017-06-20 2022-04-12 Dyson Technology Limited Electric machine
US11549513B2 (en) * 2017-06-20 2023-01-10 Dyson Technology Limited Compressor
CN111516554A (zh) * 2020-05-07 2020-08-11 苏州玲珑汽车科技有限公司 汽车热管理智能散热器模组及汽车
CN117081305A (zh) * 2023-08-23 2023-11-17 玉柴芯蓝新能源动力科技有限公司 电机散热结构

Also Published As

Publication number Publication date
DK3056738T3 (da) 2020-06-29
KR20160100242A (ko) 2016-08-23
EP3056738A1 (en) 2016-08-17
TWI584561B (zh) 2017-05-21
CN205544796U (zh) 2016-08-31
EP3056738B1 (en) 2020-03-25
TW201630314A (zh) 2016-08-16
HUE051092T2 (hu) 2021-03-01
PL3056738T3 (pl) 2020-09-07
KR101790636B1 (ko) 2017-10-26
JP2016149934A (ja) 2016-08-18
JP3203903U (ja) 2016-04-21
CN105896823A (zh) 2016-08-24

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