CN102447349B - Axial flow air cooled external rotor electric machine - Google Patents
Axial flow air cooled external rotor electric machine Download PDFInfo
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- CN102447349B CN102447349B CN2010105020662A CN201010502066A CN102447349B CN 102447349 B CN102447349 B CN 102447349B CN 2010105020662 A CN2010105020662 A CN 2010105020662A CN 201010502066 A CN201010502066 A CN 201010502066A CN 102447349 B CN102447349 B CN 102447349B
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- end cap
- electric machine
- air cooled
- support
- axial flow
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Abstract
The invention discloses an axial flow air cooled external rotor electric machine. A stator core wound with winding is fixed on an electric machine shaft by a bracket. An external shell sleeve is provided at external side of a rotor. End covers of the electric machine is respectively correspondingly fixed at two axial ends of the rotor. The integrated body formed by the end covers and the rotor is sleeved on external side of the stator core wound with winding. An annular step projected inwardly is arranged inside the end covers and is sealed with a circumference surface of two axial ends of the bracket through a seal ring. Side walls of the end covers and the bracket are all provided with a plurality of axial through vent holes. Internal side wall of the end cover at power output end of the electric machine is further provided with projected blades. When the electric machine is working, under the stirring effect of the blades at internal side of the end cover, cool air will enter inside of the electric machine from vent holes of the end cover and flow out from the other side to bring away heat on the bracket, namely, heat on the winding and the stator core to realize rapid radiation such that the electric machine will not burn down by high temperature even when under high speed rotation and high power working conditions to effectively prolong service life of the electric machine.
Description
Technical field
The present invention relates to a kind of electric machine structure, particularly a kind of axial flow air cooled external rotor electric machine.
Background technology
The heat that the motor winding produces at present passes to housing and the end cap of motor by radiation mode, after housing and end cap absorption, fallen apart to the motor outside, pass through wind-cooling heat dissipating, this radiating mode heat radiation is slow, the heat that motor produces when work is difficult to Quick diffusing and goes out, easily cause motor aging, affect the useful life of motor.
Summary of the invention
In order to make up above deficiency, the invention provides a kind of axial flow air cooled external rotor electric machine, this axial flow air cooled external rotor electric machine is simple in structure, the heat transmission is fast, cooling fully.The present invention for the technical scheme that solves its technical problem and adopt is: a kind of axial flow air cooled external rotor electric machine, comprise the stator core that is tied with winding, motor shaft, support, rotor, housing and end cap, the stator core that is tied with winding is fixedly arranged on motor shaft by support, casing is located at the rotor outside, the end cap of motor correspondence respectively is fixedly arranged on the rotor axial two ends, the integral body that end cap and rotor form is sheathed on the outside of the stator core that is tied with winding, the axial two ends of support are tightly connected with the end cap madial wall respectively, the axial two ends of described support with the structure that the end cap madial wall is tightly connected are respectively: described end cap madial wall is provided with to the inboard circular step protruded of motor, also be provided with two sealing rings, these two sealing ring madial walls press closer the outer circumference surface at the axial two ends of support, the sealing ring lateral wall presses closer respectively the circular step inner peripheral surface on the end cap madial wall, sealing ring is by the space sealing formed between the support outer circumference surface outside and end cap and rotor, the stator core that namely will be tied with winding is sealed in the environment of this sealing, be equipped with some ventilation holes that axially run through on described end cap and rack side wall, also be provided with the blade of some projections on the end cap madial wall of described motor power output, during the motor rotation, blade on the end cap of motor power output blows to support by air-flow, air-flow is taken away the heat on support, flow out to outside from the end cap of opposite side, reduced motor temperature, improved the reliability of motor.
As a further improvement on the present invention, be equipped with protruding blade on the end cap of described rotor axial both sides, blade on the end cap of motor power output opposite one side also makes gas flow, mobile air-flow has also been taken away the heat on this side electric motor end cap, has further accelerated electric motor temperature reduction simultaneously.
As a further improvement on the present invention, the blade of the projection on described end cap madial wall is the convex tendon from the radiation of middle mind-set periphery.
As a further improvement on the present invention, described blade is the linear pattern convex tendon.
As a further improvement on the present invention, described blade is and end cap cylindrical tangent line off plumb angled straight lines type convex tendon.
As a further improvement on the present invention, described blade is the arc line type convex tendon.
As a further improvement on the present invention, the ventilation hole on described end cap and support is evenly arranged along each sidewall.
Useful technique effect of the present invention is: the present invention is by establishing and run through ventilation hole on the rack side wall at electric motor end cap and stator core, establish blade in the end cap inboard, during machine operation, because end cap rotates, it is under the agitaion of the inboard blade of end cap, cold air flows out from opposite side from the end cap ventilation hole enters motor internal, heat on support is taken away, also just the heat on winding and stator core is taken away, realize quick heat radiating, even make motor in the situation that High Rotation Speed or high power work can not burn by Yin Gaowen yet, effectively extended the useful life of motor.
The accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
The end cap front view that Fig. 2 is the motor power output;
Fig. 3 be in Fig. 2 A-A to cutaway view;
The end cap rearview that Fig. 4 is the motor power output;
The end cap front view that Fig. 5 is the motor power input;
Fig. 6 be in Fig. 5 B-B to cutaway view;
The end cap rearview that Fig. 7 is the motor power input;
Fig. 8 is the support front view;
Fig. 9 be in Fig. 8 C-C to cutaway view.
Embodiment
Embodiment: a kind of axial flow air cooled external rotor electric machine, comprise the stator core 1 that is tied with winding 2, motor shaft 3, support 4, rotor 5, housing 6 and end cap 7, the stator core 1 that is tied with winding 2 is fixedly arranged on motor shaft 3 by support 4, casing is located at rotor 5 outsides, the end cap 7 of motor correspondence respectively is fixedly arranged on the axial two ends of rotor 5, the integral body that end cap 7 and rotor 5 form is sheathed on the outside of the stator core 1 that is tied with winding 2, the axial two ends of support 4 are tightly connected with end cap 7 madial walls respectively, the axial two ends of described support 4 with the structure that end cap 7 madial walls are tightly connected are respectively: described end cap 7 madial walls are provided with to the inboard circular step 72 protruded of motor, also be provided with two sealing rings 8, these two sealing ring 8 madial walls press closer the outer circumference surface at support 4 axial two ends, sealing ring 8 lateral walls press closer respectively circular step 72 inner peripheral surfaces on end cap 7 madial walls, sealing ring 8 gets up the space sealing formed between the support 4 outer circumference surface outsides and end cap 7 and rotor 5, the stator core 1 that namely will be tied with winding is sealed in the environment of this sealing, be equipped with some ventilation holes that axially run through 41 on described end cap 7 and support 4 sidewalls, also be provided with the blade 71 of some projections on end cap 7 madial walls of described motor power output, during the motor rotation, blade 71 on the end cap 7 of motor power output blows to support 4 by air-flow, air-flow is taken away the heat on support 4, flow out to outside from the end cap 7 of opposite side, reduced motor temperature, improved the reliability of motor.
Be equipped with protruding blade 71 on the end cap 7 of described rotor 5 axial both sides, blade 71 on the end cap 7 of motor power output opposite one side also makes gas flow, mobile air-flow has also been taken away the heat on this side electric motor end cap 7, has further accelerated electric motor temperature reduction simultaneously.
The blade 71 of the projection on described end cap 7 madial walls is the convex tendon from the radiation of middle mind-set periphery.
Described blade 71 is the linear pattern convex tendon.
Described blade 71 is and end cap cylindrical tangent line off plumb angled straight lines type convex tendon.
Described blade 71 is the arc line type convex tendon.
Claims (7)
1. an axial flow air cooled external rotor electric machine, comprise the stator core (1) that is tied with winding (2), motor shaft (3), support (4), rotor (5), housing (6) and end cap (7), the stator core (1) that is tied with winding (2) is fixedly arranged on motor shaft (3) by support (4), casing is located at rotor (5) outside, it is characterized in that: the end cap of motor (7) correspondence respectively is fixedly arranged on axially two ends of rotor (5), the integral body that end cap (7) and rotor (5) form is sheathed on the outside of the stator core (1) that is tied with winding (2), support (4) axially is tightly connected with end cap (7) madial wall respectively at two ends, described support (4) two ends with the structure that end cap (7) madial wall is tightly connected is respectively axially: described end cap (7) madial wall is provided with to the inboard circular step (72) protruded of motor, also be provided with two sealing rings (8), this two sealing rings (8) madial wall presses closer the axially outer circumference surface at two ends of support (4), sealing ring (8) lateral wall presses closer respectively circular step (72) inner peripheral surface on end cap (7) madial wall, be equipped with some ventilation holes that axially run through (41) on described end cap (7) and support (4) sidewall, also be provided with the blade (71) of some projections on the end cap of described motor power output (7) madial wall.
2. axial flow air cooled external rotor electric machine as claimed in claim 1, is characterized in that: on the end cap (7) of the axial both sides of described rotor (5), be equipped with protruding blade (71).
3. axial flow air cooled external rotor electric machine as claimed in claim 1 or 2 is characterized in that: the blade (71) of the projection on described end cap (7) madial wall is the convex tendon from the radiation of middle mind-set periphery.
4. axial flow air cooled external rotor electric machine as claimed in claim 3, it is characterized in that: described blade (71) is the linear pattern convex tendon.
5. axial flow air cooled external rotor electric machine as claimed in claim 4 is characterized in that: described blade (71) for and end cap cylindrical tangent line off plumb angled straight lines type convex tendon.
6. axial flow air cooled external rotor electric machine as claimed in claim 3, it is characterized in that: described blade (71) is the arc line type convex tendon.
7. axial flow air cooled external rotor electric machine as claimed in claim 1, it is characterized in that: the ventilation hole (41) on described end cap (7) and support (4) is evenly arranged along each sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105020662A CN102447349B (en) | 2010-10-09 | 2010-10-09 | Axial flow air cooled external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105020662A CN102447349B (en) | 2010-10-09 | 2010-10-09 | Axial flow air cooled external rotor electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102447349A CN102447349A (en) | 2012-05-09 |
| CN102447349B true CN102447349B (en) | 2013-12-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105020662A Expired - Fee Related CN102447349B (en) | 2010-10-09 | 2010-10-09 | Axial flow air cooled external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102447349B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715829A (en) * | 2013-12-31 | 2014-04-09 | 天津清源电动车辆有限责任公司 | Air cooling heat dissipation mechanism for wheel hub motor of electromobile |
| CN105703518A (en) * | 2016-04-20 | 2016-06-22 | 黑龙江科技大学 | Direct-connection automatic-cooling type electric drum for electric motor |
| CN110574261B (en) * | 2017-05-05 | 2021-06-15 | 罗伯特·博世有限公司 | Outer rotor type motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274980A (en) * | 1999-05-21 | 2000-11-29 | 许俊甫 | Outer-rotor motor with high efficiency, high torque and powerful support |
| CN201100944Y (en) * | 2006-12-27 | 2008-08-13 | 鲁泊凡 | Wheel hub motor for electric car |
| CN201821216U (en) * | 2010-10-09 | 2011-05-04 | 付强 | Axial-flow air-cooled outer rotor motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1056758A (en) * | 1996-08-08 | 1998-02-24 | Toshiba Corp | Totally-enclosed outer rotor motor |
-
2010
- 2010-10-09 CN CN2010105020662A patent/CN102447349B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274980A (en) * | 1999-05-21 | 2000-11-29 | 许俊甫 | Outer-rotor motor with high efficiency, high torque and powerful support |
| CN201100944Y (en) * | 2006-12-27 | 2008-08-13 | 鲁泊凡 | Wheel hub motor for electric car |
| CN201821216U (en) * | 2010-10-09 | 2011-05-04 | 付强 | Axial-flow air-cooled outer rotor motor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-56758A 1998.02.24 |
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| Publication number | Publication date |
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| CN102447349A (en) | 2012-05-09 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20151103 Address after: Qingpu District 201708 Shanghai City Huaxin Town No. 1288 1 Lu Huateng 1 storey building C room 194 Patentee after: Shanghai Yuguide Information Technology Service Center Address before: 215332 Jiangsu Province town Kunshan City Shun Yang Industrial Zone Patentee before: Fu Qiang |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190626 Address after: Room 152, Block C, No. 18 Youai Road, Qingpu Industrial Park, Shanghai, 20108 Patentee after: SHANGHAI GENGCHENG INFORMATION TECHNOLOGY SERVICE CENTER Address before: Room 194, 1st floor C, Building 1288, Huatengliu, Huaxin Town, Qingpu District, Shanghai, 20108 Patentee before: Shanghai Yuguide Information Technology Service Center |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20211009 |