CN207896754U - A kind of rotor with cooling device - Google Patents
A kind of rotor with cooling device Download PDFInfo
- Publication number
- CN207896754U CN207896754U CN201721848685.0U CN201721848685U CN207896754U CN 207896754 U CN207896754 U CN 207896754U CN 201721848685 U CN201721848685 U CN 201721848685U CN 207896754 U CN207896754 U CN 207896754U
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- shaft
- heat
- rotor
- interior
- interior shaft
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Abstract
The utility model discloses a kind of rotors with cooling device, including rotor core, magnet steel, hollow shaft, interior shaft and cooling device, the cooling device includes cooling-part and conducting-heat elements, the outside of the interior shaft is cased with hollow shaft and interior shaft stretches out hollow shaft, the rotor core is pressed on the hollow shaft, the magnet steel pastes the outer round surface of rotor core, the inside of the interior shaft is hollow structure, the conducting-heat elements are mounted in the interior shaft, and one end that the interior shaft stretches out hollow shaft is equipped with cooling-part；The utility model can be exported the heat of rotor to hollow shaft by interior shaft by the axial thermal resistance of shaft in reduction, then be cooled down by the internal shaft external part of cooling-part, and the heat of rotor is taken away, and effectively reduce the temperature of rotor.
Description
Technical field
The utility model is related to field of electromechanical technology more particularly to a kind of rotors with cooling device.
Background technology
The rotor of motor is in the center of motor, by stator surrounding, by the groups such as coil or magnet steel, lamination, iron core and shaft
At.Under normal circumstances, the heat of rotor is conducted mainly by air gap by stator.Since rotor is by stator
The influence of temperature is very big, and heat dissipation path is less, and radiating condition is generally poor.Simultaneously for magneto, rotor upper magnetic steel is permitted
Perhaps operating temperature is relatively low, and the cooling of rotor must be protected.
Common rotor cooling means has rotor end-face installation fan, rotor axial to get through hole etc..These methods pass through increasing
Add the air velocity in motor, increases the heat convection of rotor and motor inner air, be conducive to make the temperature of rotor uniform, but
It is not effectively by heat derives motor, so the effect unobvious of cooling rotor.Also have using ventilating and cooling in rotor, turn
The methods of Oil injection cooling in son, cooling effect is preferable, but needs the equipment such as additional air-cooled, oil cooling, and operation and maintenance is complicated,
It is costly, and reduce the IP grades of motor.
Invention content
Technical problem to be solved in the utility model is to provide a kind of carry in view of the above shortcomings of the prior art to cool down
The rotor of device, this rotor with cooling device, can be by the warm of rotor by the axial thermal resistance of shaft in reduction
Amount is exported by interior shaft to hollow shaft（Motor）It is external.It is cooled down, is taken away by the internal shaft external part of cooling-part again
The heat of rotor effectively reduces the temperature of rotor.
To realize the above-mentioned technical purpose, the technical solution that the utility model is taken is：
A kind of rotor with cooling device, including rotor core, magnet steel, hollow shaft, interior shaft and cooling device,
The cooling device includes cooling-part and conducting-heat elements, and the outside of the interior shaft is cased with hollow shaft and the stretching of interior shaft is hollow
Axis, the rotor core are pressed on the hollow shaft, and the magnet steel pastes the outer round surface of rotor core, the interior shaft
Inside be hollow structure, the conducting-heat elements are mounted in the interior shaft, and the interior shaft stretches out one end peace of hollow shaft
Equipped with cooling-part.
As the further improved technical solution of the utility model, one end of the interior shaft is from hollow mandrel interior
Between position extend to the outside of hollow shaft.
As the further improved technical solution of the utility model, the length of the interior shaft is more than the hollow shaft
Hollow shaft is stretched out at the both ends of length and the interior shaft, and the both ends of the interior shaft are mounted on cooling-part.
As the further improved technical solution of the utility model, the boundary of the conducting-heat elements and the inside of interior shaft
Face is filled with heat-conducting layer, and the interface of the rotor core and hollow shaft is filled with heat-conducting layer.
As the further improved technical solution of the utility model, the conducting-heat elements use aluminium or copper.
As the further improved technical solution of the utility model, the cooling-part is metal fan leaf, the metal
Fan leaf is welded on one end that the interior shaft stretches out hollow shaft, and the metal fan leaf and the contact surface of the interior shaft are filled
There is heat-conducting layer.
As the further improved technical solution of the utility model, the heat-conducting layer uses glue, epoxy resin or heat conduction
Grease.
As the further improved technical solution of the utility model, the interior shaft stretches out the appearance of one end of hollow shaft
Face is equipped with multiple heat bulges or heat dissipation groove, and the heat bulge is radiating fin, and the heat dissipation groove is dovetail groove.
The interior shaft of the utility model can be exported the heat of rotor to outside motor by conducting-heat elements, that is, be exported to interior
The external part of shaft.It is cooled down again by the external part of the internal shaft of cooling-part, takes away the heat of rotor, and interior shaft
Multiple heat bulges or heat dissipation groove that external part is equipped with can also take away the heat of rotor, effectively reduce the temperature of rotor；
By above method, thermal contact resistance, the axial thermal resistance of interior shaft, interior shaft and outside cool down between reducing each part of internal rotor
Thermal resistance, realize the reduction of rotor entire thermal resistance, effectively reduce the temperature of rotor, it is easy to operate, it is at low cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
Specific embodiment of the present utility model is further illustrated below according to Fig. 1：
Referring to Fig. 1, a kind of rotor with cooling device, including rotor core 1, magnet steel 4, hollow shaft 2, interior shaft
3 and cooling device, the cooling device include cooling-part 6 and conducting-heat elements 5, the outside of the interior shaft 3 is cased with hollow shaft 2
And interior shaft 3 stretches out hollow shaft 2, the rotor core 1 is pressed on the hollow shaft 2, and the magnet steel 4 pastes rotor core
The inside of 1 outer round surface, the interior shaft 3 is hollow structure, and the conducting-heat elements 5 are mounted in the interior shaft 3, are used for
By the heat derives of rotor to the external part of the interior shaft 3 outside hollow shaft 2.The interior shaft 3 stretches out the one of hollow shaft 2
End is equipped with cooling-part 6, for radiating.Cooling-part 6 can be metal fan leaf, or liquid cooling component specifically may be used
With according to decisions such as the heating power of motor, temperature and geometry requirements.
In the present embodiment, one end of the interior shaft 3 can extend to hollow from the centre position inside hollow shaft 2
The outside of axis 2.The both ends of the interior shaft 3 can also stretch out hollow shaft 2, at this point, the both ends of interior shaft 3 are mounted on cooling
Component 6, when the present embodiment is installed in entire motor, as shown in Figure 1, electric machine casing is stretched out in the one or both ends of interior shaft 3, and
Cooling-part is located at outside electric machine casing, and the length of interior shaft 3 at least meets rotor center to outside motor, conducting-heat elements 5
Shape is matched with the shape of 3 hollow structure of interior shaft, and the length of conducting-heat elements 5 at least meets rotor center to outside motor.
Conducting-heat elements 5 and the interface of the inside of interior shaft 3 are filled with heat-conducting layer, and rotor core 1 and the interface of hollow shaft 2 are also filled
There is heat-conducting layer.Heat-conducting layer can be glue, epoxy resin or thermally conductive grease etc..
In the present embodiment, the shape of the hollow structure of interior shaft 3 can be round, rectangular, star etc..In interior shaft 3
The radial dimensions such as the aperture of hollow structure can be determined according to concrete structure and heat output.The axis of the hollow structure of interior shaft 3
Meet to size and outside motor is extend out to by axis center, can be that one end is stretched out, or both ends are stretched out.
In the present embodiment, the material that material is the good heat conductivities such as aluminium or copper may be used in conducting-heat elements 5.Conducting-heat elements
5 may be the individual components for sealing liquid, can be conveniently installed inside shaft, liquid such as water, ethylene glycol, conduction oil
Deng.Conducting-heat elements 5 can be the part for containing liquid, liquid such as water, ethylene glycol, conduction oil etc., and liquid contacts shaft, passes through
Sealing element is by hydraulic seal inside shaft.Conducting-heat elements 5 can be heat pipe.The cross-sectional shape of conducting-heat elements 5 is adjustable.Heat conduction
Component 5 can be solid or hollow.5 length of conducting-heat elements can be adjustable, meets heat being directed at 3 external part of interior shaft（It stretches out
Motor side）.
In the present embodiment, when cooling-part 6 is metal fan leaf, metal fan leaf is directly welded at the interior shaft 3 and stretches
Go out one end of hollow shaft 2, the contact surface of metal fan leaf and the interior shaft 3 is filled with heat-conducting layer, and heat-conducting layer is using glue, ring
Oxygen resin or thermally conductive grease.Cooling-part 6 can be aerofoil fan or radial fan in interior shaft 3.Fan it is big
Small, fan blade shape is determined according to rotating speed, cooling power of motor etc..For the fan of metal material, fan and interior shaft 3
Contact can well be conducive to radiate, contact surface can be welding.Cooling-part 6 can be external forced air cooling, by outside
Fan or other ventilation members are cooled down.Cooling-part 6 can be spraying cooling, by external system countershaft section of stretching out into
Row spraying cooling, coolant liquid can be conduction oil, hydraulic oil, water or ethylene glycol solution etc..Cooling-part 6 can be liquid cooling,
Mode is that the external part of interior shaft 3 passes through container, the both ends of container and the interface of axis to be sealed, and is cooling inside container
Liquid；Coolant liquid can be static, flowing；Coolant liquid can be the fluids such as water, oil, ethylene glycol；Coolant liquid can only pass through container
Wall cooling, or cooled down by external cooling circuit.Cooling-part 6 can also not have, and radiate using only the outer surface of axis.
The outer surface that the interior shaft 3 stretches out one end of hollow shaft 2 is equipped with multiple heat bulges or heat dissipation groove, described
Heat bulge is radiating fin, and the heat dissipation groove is dovetail groove, is conducive to radiate.
At runtime, first, to outside motor, i.e., interior shaft 3 can be exported the heat of rotor by conducting-heat elements 5 motor
It exports to the external part of interior shaft 3.The external part of interior shaft 3 is cooled down by cooling-part 6 again, takes away the heat of rotor
Amount, and the external part of interior shaft 3 can also take away the heat of rotor equipped with multiple heat bulges or the groove that radiates, and effectively reduce
The temperature of rotor.By above method, reduce thermal contact resistance between each part of internal rotor, the axial thermal resistance of interior shaft 3, interior turn
Axis 3 and external cooling thermal resistance, realize the reduction of rotor entire thermal resistance, effectively reduce the temperature of rotor.
The scope of protection of the utility model includes but not limited to embodiment of above, and the scope of protection of the utility model is to weigh
Subject to sharp claim, any replacement being readily apparent that those skilled in the art that this technology is made, deformation, improvement are each fallen within
The scope of protection of the utility model.
Claims (8)
1. a kind of rotor with cooling device, it is characterised in that：Including rotor core（1）, magnet steel（4）, hollow shaft
（2）, interior shaft（3）And cooling device, the cooling device include cooling-part（6）And conducting-heat elements（5）, the interior shaft
（3）Outside be cased with hollow shaft（2）And interior shaft（3）Stretch out hollow shaft（2）, the rotor core（1）It is pressed into described hollow
Axis（2）On, the magnet steel（4）Paste rotor core（1）Outer round surface, the interior shaft（3）Inside be hollow structure,
The conducting-heat elements（5）Mounted on the interior shaft（3）It is interior, the interior shaft（3）Stretch out hollow shaft（2）One end be equipped with it is cold
But component（6）.
2. the rotor according to claim 1 with cooling device, it is characterised in that：The interior shaft（3）One
It holds from hollow shaft（2）Internal centre position extends to hollow shaft（2）Outside.
3. the rotor according to claim 1 with cooling device, it is characterised in that：The interior shaft（3）Length
Degree is more than the hollow shaft（2）Length and the interior shaft（3）Both ends stretch out hollow shaft（2）, the interior shaft（3）'s
Both ends are mounted on cooling-part（6）.
4. the rotor according to claim 1 with cooling device, it is characterised in that：The conducting-heat elements（5）With
Interior shaft（3）Inside interface be filled with heat-conducting layer, the rotor core（1）With hollow shaft（2）Interface be filled with
Heat-conducting layer.
5. the rotor according to claim 4 with cooling device, it is characterised in that：The conducting-heat elements（5）It adopts
With aluminium or copper.
6. the rotor according to claim 1 with cooling device, it is characterised in that：The cooling-part（6）For
Metal fan leaf, the metal fan leaf are welded on the interior shaft（3）Stretch out hollow shaft（2）One end, the metal fan
Leaf and the interior shaft（3）Contact surface be filled with heat-conducting layer.
7. the rotor with cooling device according to claim 4 or 6, it is characterised in that：The heat-conducting layer uses
Glue, epoxy resin or thermally conductive grease.
8. the rotor according to claim 1 with cooling device, it is characterised in that：The interior shaft（3）It stretches out
Hollow shaft（2）One end outer surface be equipped with multiple heat bulges or heat dissipation groove, the heat bulge be radiating fin, institute
It is dovetail groove to state heat dissipation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721848685.0U CN207896754U (en) | 2017-12-26 | 2017-12-26 | A kind of rotor with cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721848685.0U CN207896754U (en) | 2017-12-26 | 2017-12-26 | A kind of rotor with cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896754U true CN207896754U (en) | 2018-09-21 |
Family
ID=63549775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721848685.0U Active CN207896754U (en) | 2017-12-26 | 2017-12-26 | A kind of rotor with cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846094A (en) * | 2017-12-26 | 2018-03-27 | 宁波菲仕电机技术有限公司 | A kind of rotor with cooling device |
-
2017
- 2017-12-26 CN CN201721848685.0U patent/CN207896754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846094A (en) * | 2017-12-26 | 2018-03-27 | 宁波菲仕电机技术有限公司 | A kind of rotor with cooling device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315000 No. 308, Xiaogang Anju Road, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Feishi Technology Co., Ltd Address before: 315800 No. 55, Putuo mountain road, Beilun District, Zhejiang, Ningbo Patentee before: Phase Motion Control Ningbo Ltd. |