TWI572125B - Rotor heat dissipation structure of inner rotor motor - Google Patents
Rotor heat dissipation structure of inner rotor motor Download PDFInfo
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- TWI572125B TWI572125B TW104131400A TW104131400A TWI572125B TW I572125 B TWI572125 B TW I572125B TW 104131400 A TW104131400 A TW 104131400A TW 104131400 A TW104131400 A TW 104131400A TW I572125 B TWI572125 B TW I572125B
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Description
本發明係一種內轉子馬達之轉子散熱結構,主要指一種可令內轉子散熱以提升馬達散熱效率。 The invention relates to a rotor heat dissipation structure of an inner rotor motor, which mainly relates to a heat dissipation of the inner rotor to improve the heat dissipation efficiency of the motor.
感應式電機之內轉子感應由定子電樞繞組之變動磁場,並使內轉子之電導體可切割定子磁場之磁力線感應電動勢及電流,並使帶電之電導體在磁場中產生旋轉運動。 The inner rotor of the inductive motor senses the fluctuating magnetic field of the stator armature winding, and the electric conductor of the inner rotor can cut the magnetic field lines of the stator magnetic field to induce electromotive force and current, and cause the charged electric conductor to generate a rotating motion in the magnetic field.
馬達運轉時將產生熱能,該熱能傳遞到馬達線圈漆包線上易導致漆包線塑料融化造成線圈短路損壞,因而目前馬達常具有散熱設計,並對內轉子馬達而言,其結構係於外殼內設置定子,並於定子內設置轉子,並轉子連接輸出軸,並於外殼外部設置數散熱鰭片,使得轉子運轉時其熱源輻射至定子,再由定子傳遞至外殼及大氣中散熱。 When the motor is running, heat energy will be generated. The heat energy is transmitted to the motor coil enameled wire, which may cause the enameled wire plastic to melt and cause coil short-circuit damage. Therefore, the current motor often has a heat dissipation design, and for the inner rotor motor, the structure is set in the outer casing of the stator. A rotor is arranged in the stator, and the rotor is connected to the output shaft, and a plurality of fins are arranged outside the casing, so that the heat source is radiated to the stator when the rotor is running, and then transferred to the casing and the atmosphere to dissipate heat.
前述設計雖然可藉由大氣之氣流方式散熱,但對於馬達中心之轉子不能直接散熱,將造成轉子運轉產生之熱能輻射至定子,仍將造成定子線圈之外層高分子材料漆包線破損,並造成線圈短路馬達不能運轉缺失。 Although the above design can be dissipated by the airflow of the atmosphere, the heat of the rotor at the center of the motor cannot be directly radiated, and the thermal energy generated by the operation of the rotor is radiated to the stator, which will still cause damage to the outer wall of the polymer coil of the stator coil and cause short circuit of the coil. The motor cannot be lost.
本發明之目的在提供一種內轉子馬達之內轉子可主動散熱,並可提升馬達散熱效率及使用壽命。 The object of the present invention is to provide an inner rotor of an inner rotor motor that can actively dissipate heat and improve the heat dissipation efficiency and service life of the motor.
本發明包括一外殼、一定子、一轉子、一軸,並該外殼內具容置空間,並外部可設置散熱鰭片;又定子設於外殼之容置空間內,並具定子線圈,並中央具中空部;又轉子設於定子之中空部內,並與定子間具氣隙,並使定子線圈之變動磁場可令轉子產生渦電流旋轉;又該軸外表面與轉子連動接合,並具位於外殼內之內部段及凸出於外殼外部之外部段,又於軸之中心由內部段延伸至外部段位置設置中空部,並於中空部設置導熱裝置。 The invention comprises a casing, a stator, a rotor and a shaft, and the casing has a receiving space therein, and the heat dissipating fins can be disposed outside; the stator is disposed in the accommodating space of the casing, and has a stator coil and a center a hollow portion; the rotor is disposed in the hollow portion of the stator, and has an air gap between the stator and the stator, and the variable magnetic field of the stator coil can rotate the rotor to generate eddy current; and the outer surface of the shaft is coupled with the rotor and is located in the outer casing. The inner segment and the outer segment protruding from the outer portion of the outer casing are further provided with a hollow portion extending from the inner segment to the outer segment at the center of the shaft, and a heat conducting device is disposed at the hollow portion.
進一步,該軸之中空部二端為封閉,並該導熱裝置可為低沸點流體,並使轉子旋轉產生之高熱可令內部段位置之流體蒸發,並產生虹吸效應將熱能傳遞至外部段,並由外殼外部空氣冷卻再形成液態,並可藉由液氣二相熱交換以快速將轉子運轉之熱能導出,使得轉子溫度可降低並可減小熱能輻射至定子線圈,並可減小定子線圈之漆包絕緣損壞以提升馬達壽命。 Further, the two ends of the hollow portion of the shaft are closed, and the heat conducting device can be a low boiling point fluid, and the high heat generated by the rotation of the rotor can evaporate the fluid at the inner segment position, and generate a siphon effect to transfer the heat energy to the outer segment, and Cooled by the outside air of the outer casing to form a liquid state, and the liquid-phase two-phase heat exchange can be used to quickly derive the thermal energy of the rotor operation, so that the rotor temperature can be reduced and the thermal energy can be radiated to the stator coil, and the stator coil can be reduced. Enamelled insulation damage to improve motor life.
進一步,該導熱裝置可為熱管,並該熱管置於軸之內部段至外部段中空部內,令其外壁與中空部內壁複合,並該熱管之內壁設置毛細多孔表面,且於熱管內設置低沸點流體,使得轉子旋轉產生之高熱可傳遞至軸之內部段令熱管內之流體蒸發,並該蒸氣位移至熱管對應外部段位置再傳遞至軸外側,並由外部氣流冷卻成液體,並該液體可經由熱管內壁毛細表面快速回流至對應內部段位置,並可藉由液氣二相快速熱交換減低轉子運轉溫度,並可減小定子線圈之漆包絕緣損壞以提升馬達壽命。 Further, the heat conducting device may be a heat pipe, and the heat pipe is disposed in the inner portion of the shaft to the hollow portion of the outer portion, so that the outer wall thereof is combined with the inner wall of the hollow portion, and the inner wall of the heat pipe is provided with a capillary porous surface and is disposed in the heat pipe. The boiling point fluid causes the high heat generated by the rotation of the rotor to be transmitted to the inner section of the shaft to evaporate the fluid in the heat pipe, and the vapor is displaced to the corresponding outer section of the heat pipe and then transferred to the outside of the shaft, and is cooled by the external airflow into a liquid, and the liquid The capillary inner surface of the heat pipe can be quickly returned to the corresponding inner segment position, and the rotor air temperature can be reduced by the liquid-phase two-phase rapid heat exchange, and the lacquer insulation damage of the stator coil can be reduced to improve the motor life.
進一步,該導熱裝置可為高導熱材,並該高導熱材可為銅、鋁、銀,並置入軸內部段至外部段之中空部內與軸複合成型,使得轉子運轉產生之高熱可傳遞至軸之內部段再傳遞至高導熱材,並該高導熱材可快速將內部段之高溫傳遞至對應外部段位置,並由外殼外部氣流快速降溫以減低轉子運轉溫度。 Further, the heat conducting device may be a high heat conductive material, and the high heat conducting material may be copper, aluminum, silver, and is inserted into the hollow portion of the shaft to the hollow portion of the outer portion to be combined with the shaft, so that the high heat generated by the operation of the rotor can be transmitted to The inner section of the shaft is transferred to the high heat conductive material, and the high heat conductive material can quickly transfer the high temperature of the inner section to the corresponding outer section position, and the airflow outside the outer casing is rapidly cooled to reduce the rotor operating temperature.
本發明設計可令位於馬達中心之內轉子主動散熱,其散熱效率可遠較僅針對外殼設置散熱鰭片對定子降溫具更佳效率,並可提升馬達更佳使用壽命,而本發明之馬達可應用於電動車或其他機具,並可提升電動車式其應用機具更佳使用可靠性及壽命。 The design of the invention can make the rotor located in the center of the motor actively dissipate heat, and the heat dissipation efficiency can be far more efficient than that of providing only the heat dissipation fins for the stator to cool down the stator, and the motor can be improved in service life, and the motor of the invention can be improved. It can be applied to electric vehicles or other implements, and it can improve the reliability and life of electric vehicles.
1‧‧‧外殼 1‧‧‧Shell
11‧‧‧容置空間 11‧‧‧ accommodating space
12‧‧‧散熱鰭片 12‧‧‧ Heat sink fins
2‧‧‧定子 2‧‧‧stator
21‧‧‧定子線圈 21‧‧‧statar coil
22‧‧‧中空部 22‧‧‧ Hollow
3‧‧‧轉子 3‧‧‧Rotor
31‧‧‧氣隙 31‧‧‧ Air gap
4‧‧‧軸 4‧‧‧Axis
41‧‧‧內部段 41‧‧‧Internal section
42‧‧‧外部段 42‧‧‧External segment
43‧‧‧中空部 43‧‧‧ Hollow
44‧‧‧導熱裝置 44‧‧‧heat conduction device
441‧‧‧流體 441‧‧‧ fluid
442‧‧‧熱管 442‧‧‧ heat pipe
443‧‧‧外壁 443‧‧‧ outer wall
444‧‧‧內壁 444‧‧‧ inner wall
445‧‧‧流體 445‧‧‧ fluid
446‧‧‧高導熱材 446‧‧‧High thermal conductivity
5‧‧‧外部組件 5‧‧‧External components
6‧‧‧散熱塊 6‧‧‧Heat block
61‧‧‧散熱鰭片 61‧‧‧Heat fins
第一圖係本發明之第一實施例對應馬達軸向剖視示意圖。 The first figure is a schematic cross-sectional view of the first embodiment of the present invention corresponding to the motor.
第二圖係本發明之第一實施例對應馬達徑向剖視示意圖。 The second drawing is a schematic cross-sectional view of a motor according to a first embodiment of the present invention.
第三圖係本發明之第一實施例轉子運轉散熱示意圖。 The third figure is a schematic diagram of the heat dissipation of the rotor in the first embodiment of the present invention.
第四圖係本發明之第二實施例對應馬達軸向剖視示意圖。 The fourth figure is a schematic cross-sectional view of the second embodiment of the present invention corresponding to the motor.
第五圖係本發明之第二實施例轉子運轉散熱示意圖。 Fig. 5 is a schematic view showing the heat dissipation of the rotor of the second embodiment of the present invention.
第六圖係本發明之第三實施例對應馬達軸向剖視示意圖。 Figure 6 is a schematic cross-sectional view of the third embodiment of the present invention corresponding to the motor.
請參閱第一~三圖,本發明第一實施例包括一外殼1、一定子2、一轉子3、一軸4,並該外殼1內具容置空間11,並外部設置散熱鰭片12;又定子2設於外殼1之容置空間11內,並具定子線圈21,並中央具中空部22;又轉子3設於定子2之中空部22內,並與 定子2間具氣隙31,並使定子線圈21之變動磁場可令轉子3產生渦電流旋轉。 Referring to the first to third figures, the first embodiment of the present invention includes a casing 1, a stator 2, a rotor 3, and a shaft 4, and the casing 1 has an accommodation space 11 and externally disposed with fins 12; The stator 2 is disposed in the accommodating space 11 of the outer casing 1 and has a stator coil 21 and has a hollow portion 22 at the center; and the rotor 3 is disposed in the hollow portion 22 of the stator 2, and An air gap 31 is provided between the stators 2, and the fluctuating magnetic field of the stator coil 21 causes the rotor 3 to generate eddy current rotation.
軸4之外表面與轉子3連動接合,並具位於外殼1內之內部段41及凸出於外殼1外部之外部段42,而該外部段42連接外部組件5,又於軸4之中心由內部段41延伸至外部段42位置設置中空部43,並於中空部43設置導熱裝置44,又於軸4之外部段42設置散熱塊6,並該散熱塊6具散熱鰭片61。 The outer surface of the shaft 4 is coupled to the rotor 3 and has an inner section 41 located inside the outer casing 1 and an outer section 42 protruding from the outer portion of the outer casing 1, and the outer section 42 is connected to the outer component 5 and is also centered on the shaft 4 The inner section 41 extends to the outer section 42 to position the hollow portion 43, and the heat conducting device 44 is disposed in the hollow portion 43, and the heat dissipating block 6 is disposed on the outer portion 42 of the shaft 4, and the heat dissipating block 6 has the heat dissipating fins 61.
又該軸4之中空部43二端為封閉,並該導熱裝置44為低沸點流體441,例如水、甲醇、乙醇、丙酮,並使轉子3旋轉產生之高熱可令內部段41位置之流體441蒸發,並產生虹吸效應將熱能傳遞至外部段42,並由外殼1外部空氣冷卻再形成液態,並可藉由液氣二相熱交換以快速將轉子3運轉之熱能導出,使得轉子3溫度可降低,並減小熱能輻射至定子線圈21,並可減小定子線圈21之漆包絕緣損壞以提升馬達壽命。 Moreover, the two ends of the hollow portion 43 of the shaft 4 are closed, and the heat conducting device 44 is a low boiling point fluid 441, such as water, methanol, ethanol, acetone, and the high heat generated by the rotation of the rotor 3 can make the fluid in the inner section 41 position 441. Evaporating and generating a siphon effect to transfer thermal energy to the outer section 42 and being cooled by the outside air of the outer casing 1 to form a liquid state, and the liquid-phase two-phase heat exchange can be used to quickly derive the thermal energy of the rotor 3, so that the temperature of the rotor 3 can be The heat radiation is reduced and reduced to the stator coil 21, and the enamel insulation damage of the stator coil 21 can be reduced to increase the life of the motor.
請參閱第四、五圖係本發明第二實施例,並該第二實施例與第一實施例類同,其差異在導熱裝置44為熱管442,並該熱管442置於軸4之內部段41至外部段42之中空部43內,令其外壁443與中空部43內壁444複合,並該熱管442之內壁444設置毛細多孔表面,且於熱管442內設置低沸點流體445,例如水、甲醇、乙醇、丙酮,使得轉子3旋轉產生之高熱可傳遞至軸4之內部段41令熱管442內之流體445蒸發,並該蒸氣位移至熱管442對應外部段42位置再傳遞至軸4外側,並由外部氣流冷卻成液體,並該液體可經 由熱管442內壁444毛細表面快速回流至對應內部段41位置,並可藉由液氣二相快速熱交換減低轉子3運轉溫度,並可減小定子線圈21之漆包絕緣損壞以提升馬達壽命。 4 and 5 are a second embodiment of the present invention, and the second embodiment is similar to the first embodiment. The difference is that the heat conducting device 44 is a heat pipe 442, and the heat pipe 442 is placed inside the shaft 4. 41 to the hollow portion 43 of the outer portion 42 such that the outer wall 443 is combined with the inner wall 444 of the hollow portion 43, and the inner wall 444 of the heat pipe 442 is provided with a capillary porous surface, and a low boiling point fluid 445 such as water is disposed in the heat pipe 442. , methanol, ethanol, acetone, so that the high heat generated by the rotation of the rotor 3 can be transmitted to the inner section 41 of the shaft 4 to evaporate the fluid 445 in the heat pipe 442, and the vapor is displaced to the position of the corresponding outer section 42 of the heat pipe 442 and then transmitted to the outside of the shaft 4 And cooled by an external air stream into a liquid, and the liquid can pass through The capillary surface of the inner wall 444 of the heat pipe 442 is quickly returned to the position corresponding to the inner section 41, and the operating temperature of the rotor 3 can be reduced by the liquid-phase two-phase rapid heat exchange, and the enamelled insulation damage of the stator coil 21 can be reduced to improve the motor life. .
請參閱第六圖係本發明第三實施例,並該第三實施例與第一實施例類同,其差異在導熱裝置44為高導熱材446,並該高導熱材446可為銅、鋁、銀,並置入軸4內部段41至外部段42之中空部43內與軸4複合成型,使得轉子3運轉產生之高熱可傳遞至軸4之內部段41再傳遞至高導熱材446,並該高導熱材446可快速將內部段41之高溫傳遞至對應外部段42位置,並由外殼1外部氣流快速降溫以減低轉子3運轉溫度。 Please refer to the sixth embodiment of the third embodiment of the present invention, and the third embodiment is similar to the first embodiment. The difference is that the heat conducting device 44 is a high thermal conductive material 446, and the high thermal conductive material 446 can be copper or aluminum. And silver, and inserted into the hollow portion 43 of the inner portion 41 to the outer portion 42 of the shaft 4 to be combined with the shaft 4, so that the high heat generated by the operation of the rotor 3 can be transmitted to the inner portion 41 of the shaft 4 and then transferred to the high heat conductive material 446, and The high heat conductive material 446 can quickly transfer the high temperature of the inner section 41 to the corresponding outer section 42 position, and the airflow outside the outer casing 1 is rapidly cooled to reduce the operating temperature of the rotor 3.
此外,本發明前述第一~三實施例配合散熱塊6設置可更快速令傳遞至軸4外部段42之熱源降溫,可提升更佳散熱效率。 In addition, the foregoing first to third embodiments of the present invention, in combination with the heat dissipating block 6, can more quickly cool down the heat source transmitted to the outer segment 42 of the shaft 4, thereby improving the heat dissipation efficiency.
本發明設計可令位於馬達中心之內轉子3主動散熱,其散熱效率可遠較僅針對外殼1設置散熱鰭片12對定子2降溫具更佳效率,並可提升馬達更佳使用壽命,而本發明之馬達可應用於電動車或其他機具,並可提升電動車式其應用機具更佳使用可靠性及品質,並前述實施例為本發明例示,並非本發明限制,凡依據本創作精神所為之等效改變亦應屬於本發明範疇內。 The design of the invention can enable the rotor 3 located in the center of the motor to actively dissipate heat, and the heat dissipation efficiency can be far more efficient than that of the heat sink fin 12 for the outer casing 1 to lower the temperature of the stator 2, and the motor can be improved in service life. The motor of the invention can be applied to an electric vehicle or other implements, and can improve the reliability and quality of the electric vehicle type application tool, and the foregoing embodiments are illustrative of the invention, and are not limited by the invention, and are based on the spirit of the present invention. Equivalent changes are also within the scope of the invention.
1‧‧‧外殼 1‧‧‧Shell
11‧‧‧容置空間 11‧‧‧ accommodating space
12‧‧‧散熱鰭片 12‧‧‧ Heat sink fins
2‧‧‧定子 2‧‧‧stator
21‧‧‧定子線圈 21‧‧‧statar coil
22‧‧‧中空部 22‧‧‧ Hollow
3‧‧‧轉子 3‧‧‧Rotor
31‧‧‧氣隙 31‧‧‧ Air gap
4‧‧‧軸 4‧‧‧Axis
41‧‧‧內部段 41‧‧‧Internal section
42‧‧‧外部段 42‧‧‧External segment
43‧‧‧中空部 43‧‧‧ Hollow
44‧‧‧導熱裝置 44‧‧‧heat conduction device
441‧‧‧流體 441‧‧‧ fluid
5‧‧‧外部組件 5‧‧‧External components
6‧‧‧散熱塊 6‧‧‧Heat block
61‧‧‧散熱鰭片 61‧‧‧Heat fins
Claims (7)
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI647143B (en) * | 2017-12-28 | 2019-01-11 | Heat radiation structure of power wheel axle of electric locomotive | |
CN110138142A (en) * | 2018-02-09 | 2019-08-16 | 低碳动能开发股份有限公司 | The heat-dissipating structure of electric motor car power wheel wheel shaft |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI795627B (en) * | 2020-02-06 | 2023-03-11 | 士林電機廠股份有限公司 | Liquid-cooled motor cooling structure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202818002U (en) * | 2012-07-31 | 2013-03-20 | 联合汽车电子有限公司 | Cooling structure of internal-rotor motor |
CN203596707U (en) * | 2013-11-18 | 2014-05-14 | 於贻鹏 | Embedded motor rotor cooling structure |
CN104242519A (en) * | 2013-06-18 | 2014-12-24 | 於贻鹏 | Motor rotor cooling structure |
-
2015
- 2015-09-23 TW TW104131400A patent/TWI572125B/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202818002U (en) * | 2012-07-31 | 2013-03-20 | 联合汽车电子有限公司 | Cooling structure of internal-rotor motor |
CN104242519A (en) * | 2013-06-18 | 2014-12-24 | 於贻鹏 | Motor rotor cooling structure |
CN203596707U (en) * | 2013-11-18 | 2014-05-14 | 於贻鹏 | Embedded motor rotor cooling structure |
Cited By (2)
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TWI647143B (en) * | 2017-12-28 | 2019-01-11 | Heat radiation structure of power wheel axle of electric locomotive | |
CN110138142A (en) * | 2018-02-09 | 2019-08-16 | 低碳动能开发股份有限公司 | The heat-dissipating structure of electric motor car power wheel wheel shaft |
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