CN203596707U - Embedded motor rotor cooling structure - Google Patents
Embedded motor rotor cooling structure Download PDFInfo
- Publication number
- CN203596707U CN203596707U CN201320731603.XU CN201320731603U CN203596707U CN 203596707 U CN203596707 U CN 203596707U CN 201320731603 U CN201320731603 U CN 201320731603U CN 203596707 U CN203596707 U CN 203596707U
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- heat
- heat pipe
- radiating
- cooling structure
- blind hole
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- 238000001816 cooling Methods 0.000 title claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 6
- 238000005245 sintering Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses an embedded motor rotor cooling structure, comprising a rotor; a motor shaft is located on the rotor, and one end of the motor shaft in a motor casing is provided with a coaxial blind hole; the heat absorption end of a heat conduction pipe is inserted in the blind hole; the inner diameter of the heat conduction pipe gradually increases from the end surface of a heat dissipation end to the heat absorption end; the inner wall of the heat absorption end of the heat conduction pipe is provided with a sintering layer. The embedded motor rotor cooling structure can effectively avoid the influence on the cooling efficiency of the heat conduction pipe caused by rotor high speed rotating, allow a motor to possess reliable cooling efficiency and meanwhile provide convenience for processing and manufacture of the motor.
Description
Technical field
The utility model relates to technical field of motors, especially relates to a kind of embedded motor rotor cooling structure.
Background technology
Motor can produce heat in the time of work, conventionally be all to dispel the heat by housing, thereby or blade is installed on rotor by the air intake housing of outside, and then reach cooling object, but the above-mentioned type of cooling exists the problem that cooling effectiveness is low and noise is large.Along with the progress of technology, people by arranging the heat pipe that can conduct fast heat to realize the cooling of motor on motor.For example, a kind of disclosed in Chinese patent literature " with the cooling motor of the heat pipe type of cooling ", publication No. is CN102751803A, with heat pipe, directly by the motor feels hot, heat that source sends passes cooling motor to this motor, comprise that stator, rotor, armature winding and two overlap independently cooling group of heat pipe, can distinguish independent use, also use capable of being combined.This type of cooling can solve current conventional motors development restriction, the object that reaches designs simplification and reduce costs.The essential structure of heat pipe comprises the body of a vacuum, in body, be provided with working media, the tube wall of heat pipe is provided with capillary structure, one end of heat pipe is heat absorbing end, the other end is radiating end, and when the heat absorbing end of heat pipe contacts with thermal source, the heat of thermal source makes the working media in body become gas and flows to radiating end, after radiating end sheds heat, become liquid, then automatically flow back into heat absorbing end by the effect of capillary structure.For example, a kind of disclosed in Chinese patent literature " heat pipe structure of the smooth zero draft of end face ", notification number is CN2585162Y, wherein top cover and bottom are arranged at respectively upper end and the bottom of hollow cylinder, and the upper surface of this top cover is formed with recess, and is formed with perforation in recess, filling tube is arranged in the perforation of top cover, this bottom lower surface is plane, and has capillary structure to be attached at the inner edge wall of hollow cylinder, and flexible supporter is placed in a side of capillary structure.Although heat pipe has the fast feature of heat conduction velocity, but there are the following problems to use it for rotor cooling: due to motor when the work rotor in high speed rotating state, therefore, be arranged on also high speed rotating synchronously of epitrochanterian heat pipe, thereby the working media that now becomes liquid in heat pipe after heat radiation can be subject to the effect of a great centrifugal force to be attached on the inwall of heat pipe, reduce widely capillary structure in the heat pipe guide function to working media, make the working media of radiating end cannot get back to rapidly heat absorbing end, thereby reduce widely the heat conduction efficiency of heat pipe and the cooling effect of rotor.
Utility model content
The utility model is that the working media existing when solving with heat pipe cooling motor rotor cannot be got back to heat absorbing end rapidly, the poor problem of cooling effect of rotor, a kind of cooling structure of the rotor that adopts heat pipe is provided, can effectively avoids rotor high-speed to rotate the impact on heat pipe cooling effectiveness.
To achieve these goals, the utility model is by the following technical solutions: a kind of embedded motor rotor cooling structure, comprise rotor, one end that epitrochanterian motor shaft is positioned at electric machine casing is provided with coaxial blind hole, the heat absorbing end of one heat pipe is plugged in blind hole, and the internal diameter of described heat pipe progressively increases from end face to the heat absorbing end of radiating end.
The utility model is by a blind hole is set on the motor shaft of rotor, and the heat pipe of pegging graft in blind hole, thereby can effectively the heat of rotor outwards be transmitted, and its overall structure is simple, and is convenient to processing and manufacturing.Particularly, existing heat pipe is cylindrical tube, thereby the working media in heat pipe is easily subject to the effect of centrifugal force and is attached to consumingly on heat pipe inwall in the time that rotor high-speed rotates, and then the working media of reduction radiating end is back to the speed of heat absorbing end.Heat pipe internal diameter of the present utility model progressively increases from end face to the heat absorbing end of radiating end, that is to say, the inwall of heat pipe is outward-dipping to heat absorbing end from the end face of radiating end, like this, be adsorbed on the reaction force of the inwall that working media liquid on the inwall of inclination can be tilted, this reaction force can form the component towards heat pipe heat absorbing end, thereby the medium that pushes the work forward refluxes towards heat absorbing end.And the rotating speed of rotor is higher, centrifugal force is larger, correspondingly the reaction force of inwall is also larger, this reaction force is also larger at the component towards heat pipe heat absorbing end like this, thereby effectively drive the backflow of working media, effectively solve the problem of the cooling effectiveness reduction of rotor heat pipe in the time of high speed rotating, and then improved the cooling effect of rotor.
As preferably, the heat absorbing end inwall of described heat pipe is provided with sinter layer, sinter layer can be realized by sintering process, can form because sinter layer is inner the trickle aperture evenly gathering, thereby it has good capillarity, like this, the working media that is back to heat absorbing end by radiating end can be adsorbed on equably on the inwall of whole heat absorbing end under the capillarity of sinter layer, thereby " dry combustion method " phenomenon of avoiding heat absorbing end inwall part to form without working media absorption, and then can effectively improve heat absorption efficiency.Particularly, the sinter layer of sintering on inwall has to be convenient to install and manufactures and the high non-damageable advantage of intensity.
As preferably, between the heat absorbing end of heat pipe and the blind hole inwall of motor shaft, be filled with heat transfer copper powder, and be provided with sealing ring between the edge of opening of blind hole and heat pipe.
Because the degree of depth of blind hole is darker, therefore the processing of blind hole is more difficult, is difficult to guarantee fitting tightly between heat pipe.In the utility model, the size of blind hole can be a bit larger tham the size of heat pipe, thereby formation matched in clearance, epitrochanterian heat can be delivered on heat pipe by heat transfer copper powder, that is to say, heat transfer copper powder makes to form being connected of a kind of flexibility between heat pipe and blind hole inwall, thereby can greatly reduce the accuracy of manufacture of blind hole, be convenient to its processing and manufacturing, sealing ring the leaking of copper powder of can avoiding conducting heat.
As preferably, be provided with vertically some radiating fins that radially extend at the outer surface of heat pipe radiating end, thereby can improve the radiating effect of radiating end, particularly, air resistance coefficient and noise when the radiating fin radially extending can be reduced in high speed rotating greatly.
As preferably, described radiating fin comprises the heat dissipating ring affixed with radiating end, and the outward flange of heat dissipating ring is provided with stepped tooth.
Because the temperature of radiating fin progressively reduces from centre to edge, and stepped tooth structure can make the area of dissipation of radiating fin correspondingly progressively reduce from centre to edge, like this, in guaranteeing radiating fin radiating efficiency, can reduce significantly the weight of radiating fin, both reduce material cost, be conducive to again make motor lightweight.
As preferably, be provided with radiator fan at the radiating end of heat pipe, described radiator fan comprises and is set in the fastening hoop of radiating end and is arranged on equably the fan blade on adapter sleeve periphery.Radiator fan is conducive to the heat radiation of heat pipe on the one hand, is conducive to heat pipe simultaneously and adopts segmentation structure, is convenient to its processing and manufacturing.
Therefore, the utlity model has following beneficial effect: can effectively avoid rotor high-speed to rotate the impact on heat pipe cooling effectiveness, make motor there is cooling effect reliably.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the partial sectional view of heat pipe.
Fig. 3 is the structural representation of heat absorption circle.
Fig. 4 is the structural representation of radiating fin.
In figure: 1, rotor 11, motor shaft 12, blind hole 2, heat pipe 21, heat absorbing end 22, radiating end 23, sinter layer 3, heat absorption circle 31, circle body 32, elasticity slip 4, heat transfer copper powder 5, sealing ring 6, radiating fin 61, heat dissipating ring 62, stepped tooth 63, stripper loop 7, radiator fan 71, fastening hoop 72, fan blade
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Figure 1, a kind of embedded motor rotor cooling structure, cooling for to rotor, comprise rotor 1, motor shaft 11 for output torque on rotor arranges coaxial blind hole 12 in the one end that is positioned at electric machine casing, then the heat absorbing end of a heat pipe 2 21 is inserted in blind hole, and the radiating end 22 of heat pipe opposite side exposes outside motor shaft, because heat pipe has very high heat transfer rate, the heat that therefore rotor can be produced in the time working distributes by heat pipe.In order to make rotor working media in heat pipe when the high speed rotating successfully be back to heat absorbing end from radiating end, the internal diameter of heat pipe progressively increases from end face to the heat absorbing end of radiating end, that is to say, the inwall of heat pipe is outward-dipping to heat absorbing end from the end face of radiating end, like this, in the time of machine operation, be adsorbed on the reaction force of the inwall that working media liquid on the inwall of inclination can be tilted, the centrifugal force that this reaction force and working media are subject to can form making a concerted effort towards heat pipe heat absorbing end, thereby the inwall that the medium that pushes the work forward tilts along heat pipe refluxes towards heat absorbing end.And the rotating speed of rotor is higher, centrifugal force is larger, correspondingly the reaction force of inwall is also larger, medium also larger with joint efforts like this pushes the work forward, thereby can effectively drive the backflow of working media, solve the problem of the cooling effectiveness reduction of rotor heat pipe in the time of high speed rotating, and then improved the cooling effect of rotor.
In addition, we also can be on the heat absorbing end inwall of heat pipe the sinter layer 23 of sintering one deck anaerobic copper powder, the inner trickle aperture evenly gathering forming of sinter layer has good capillarity, like this, the working media that is back to heat absorbing end by radiating end can be adsorbed on equably on the inwall of whole heat absorbing end under the capillarity of sinter layer, thereby the heat of heat absorbing end is passed to rapidly to working media and working media is evaporated rapidly, and then can effectively improve heat absorption efficiency.
In order further to strengthen the efficiency of heat absorbing end working media heat absorption evaporation, as shown in Figure 2, we also can first arrange some heat absorption circles 3 of arranging vertically at the heat absorbing end inwall of heat pipe.The overall ringwise comb shape of heat absorption circle, concrete structure as shown in Figure 3, it comprise the circle body 31 that is connected with heat absorbing end inwall and by circle body to away from the axially extended some elasticity slips 32 of radiating end, when heat absorption circle is fixed to after heat pipe inwall, at the heat absorbing end inwall of heat pipe and the sinter layer of the surperficial sintering one deck anaerobic copper powder of heat absorption circle.Like this, the heat of the heat absorbing end of heat pipe can be transmitted to heat absorption simultaneously and enclose above, thereby the inwall of heat absorbing end and heat absorption circle can be evaporated working media simultaneously, and then improves significantly the heat absorption efficiency of heat absorbing end.It should be noted that, heat absorption circle can adopt stainless steel or other has good heat conductive performance and flexible material is made, and thickness can be controlled between 0.01 millimeter-0.02 millimeter, like this, heat absorption circle had both had good heat-conductive characteristic, there is good elasticity simultaneously, in the time that rotor high-speed rotates, the elasticity slip of heat absorption circle naturally outwards struts and is close to the inwall of heat pipe under the effect of centrifugal force, that is to say that elasticity slip and heat pipe inwall keep identical angle of inclination, thereby can guarantee that the working media on heat absorption circle can reflux fast in the time that rotor high-speed rotates.
Further, heat absorption circle can be arranged by front and back overlap joint in the axial direction of heat pipe, thereby can arrange more heat absorption circle, certainly, now elasticity slip preferably should be arranged in the circumferencial direction equal intervals of circle body, and the elasticity slip of adjacent in the axial direction two the heat absorption circles layout that misplaces in a circumferential direction, thereby can avoid affecting the evaporation rate of working media because the elasticity slip of adjacent heat absorption circle stacks together mutually.
As shown in Figure 1, cause the part between heat pipe and blind hole inwall to contact laminating for fear of the mismachining tolerance of the blind hole because of motor shaft, we can make the aperture of blind hole be a bit larger tham the external diameter of heat pipe, thereby between blind hole and heat pipe, form micro-gap, then between the heat absorbing end of heat pipe and the blind hole inwall of motor shaft, fill trickle heat transfer copper powder 4, and between the edge of opening of blind hole and heat pipe, sealing ring 5 is set.Like this, can eliminate the gap between blind hole and heat pipe, guarantee close contact laminating between the two, can reduce on the one hand the machining accuracy of blind hole, be conducive to improve the heat transference efficiency between motor shaft and heat pipe simultaneously.
Finally, we also can arrange some radiating fins 6 that radially extend in compartment of terrain vertically at the outer surface of heat pipe radiating end.As shown in Figure 4, radiating fin comprises the heat dissipating ring affixed with radiating end 61, at the outward flange of heat dissipating ring, stepped tooth 62 is set simultaneously.Because radiating fin is positioned at the plane axial perpendicular to heat pipe, thereby radiating fin can not form impetus to air in the time of high speed rotating, thereby air resistance coefficient and noise can greatly be reduced in high speed rotating time, the air of radiating fin two sides forms relative high velocity air, can improve the radiating effect of radiating fin.In addition, between radiating fin, stripper loop 63 can be set, both can accurately locate the spacing between radiating fin, be conducive to again radiating fin and be fixed on heat pipe reliably, and increase the heat transfer area between heat pipe and radiating fin, improve radiating effect.Stepped tooth can reduce significantly the weight of radiating fin under the prerequisite that does not reduce radiating effect, save material, and reduce rotor rotate time moment of inertia.Certainly, as shown in Figure 1, we also can arrange a radiator fan 7 at the radiating end of heat pipe, and radiator fan comprises and be set in the fastening hoop 71 of radiating end and be arranged on equably the fan blade 72 on fastening hoop periphery, and radiator fan can be used aluminium alloy casting.Like this, radiator fan is conducive to the heat radiation of heat pipe on the one hand, and we can make heat pipe the splicing construction of segmented simultaneously, so that its processing and manufacturing, fastening hoop is just positioned at stitching portion, thereby is conducive to improve the splicing intensity of heat pipe.
Claims (6)
1. an embedded motor rotor cooling structure, comprise rotor, one end that epitrochanterian motor shaft is positioned at electric machine casing is provided with coaxial blind hole, and the heat absorbing end of a heat pipe is plugged in blind hole, it is characterized in that, the internal diameter of described heat pipe progressively increases from end face to the heat absorbing end of radiating end.
2. a kind of embedded motor rotor cooling structure according to claim 1, is characterized in that, the heat absorbing end inwall of described heat pipe is provided with sinter layer.
3. a kind of embedded motor rotor cooling structure according to claim 1 and 2, is characterized in that, between the heat absorbing end of heat pipe and the blind hole inwall of motor shaft, is filled with heat transfer copper powder, and is provided with sealing ring between the edge of opening of blind hole and heat pipe.
4. a kind of embedded motor rotor cooling structure according to claim 1 and 2, is characterized in that, is provided with vertically some radiating fins that radially extend at the outer surface of heat pipe radiating end.
5. a kind of embedded motor rotor cooling structure according to claim 4, is characterized in that, described radiating fin comprises the heat dissipating ring affixed with radiating end, and the outward flange of heat dissipating ring is provided with stepped tooth.
6. a kind of embedded motor rotor cooling structure according to claim 1 and 2, it is characterized in that, radiating end at heat pipe is provided with radiator fan, and described radiator fan comprises and is set in the fastening hoop of radiating end and is arranged on equably the fan blade on adapter sleeve periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731603.XU CN203596707U (en) | 2013-11-18 | 2013-11-18 | Embedded motor rotor cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731603.XU CN203596707U (en) | 2013-11-18 | 2013-11-18 | Embedded motor rotor cooling structure |
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| Publication Number | Publication Date |
|---|---|
| CN203596707U true CN203596707U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731603.XU Expired - Fee Related CN203596707U (en) | 2013-11-18 | 2013-11-18 | Embedded motor rotor cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596707U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973038A (en) * | 2014-05-22 | 2014-08-06 | 王秀云 | Heat dissipater used for motor |
| CN103986279A (en) * | 2014-05-21 | 2014-08-13 | 深圳先进技术研究院 | Motor and electric vehicle with same |
| CN104242557A (en) * | 2013-06-18 | 2014-12-24 | 於贻鹏 | Embedded motor rotor cooling structure |
| CN103986279B (en) * | 2014-05-21 | 2016-11-30 | 深圳先进技术研究院 | Motor and there is the electric vehicle of this motor |
| TWI572125B (en) * | 2015-09-23 | 2017-02-21 | Rotor heat dissipation structure of inner rotor motor | |
| CN107356143A (en) * | 2017-06-26 | 2017-11-17 | 上海嘉熙科技有限公司 | Hot superconductive radiating component and the motor with hot superconductive radiating component |
| CN110198092A (en) * | 2019-06-19 | 2019-09-03 | 清华大学 | Heat conduction oil cooling device and flywheel energy storage motor in rotor hollow shaft |
-
2013
- 2013-11-18 CN CN201320731603.XU patent/CN203596707U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242557A (en) * | 2013-06-18 | 2014-12-24 | 於贻鹏 | Embedded motor rotor cooling structure |
| CN104242557B (en) * | 2013-06-18 | 2017-10-10 | 於贻鹏 | A kind of embedded motor rotor cooling structure |
| CN103986279A (en) * | 2014-05-21 | 2014-08-13 | 深圳先进技术研究院 | Motor and electric vehicle with same |
| CN103986279B (en) * | 2014-05-21 | 2016-11-30 | 深圳先进技术研究院 | Motor and there is the electric vehicle of this motor |
| CN103973038A (en) * | 2014-05-22 | 2014-08-06 | 王秀云 | Heat dissipater used for motor |
| TWI572125B (en) * | 2015-09-23 | 2017-02-21 | Rotor heat dissipation structure of inner rotor motor | |
| CN107356143A (en) * | 2017-06-26 | 2017-11-17 | 上海嘉熙科技有限公司 | Hot superconductive radiating component and the motor with hot superconductive radiating component |
| CN110198092A (en) * | 2019-06-19 | 2019-09-03 | 清华大学 | Heat conduction oil cooling device and flywheel energy storage motor in rotor hollow shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140514 Termination date: 20171118 |