CN105099079A - Rare-earth permanent magnet motor - Google Patents
Rare-earth permanent magnet motor Download PDFInfo
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- CN105099079A CN105099079A CN201510608305.5A CN201510608305A CN105099079A CN 105099079 A CN105099079 A CN 105099079A CN 201510608305 A CN201510608305 A CN 201510608305A CN 105099079 A CN105099079 A CN 105099079A
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- electric machine
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- earth permanent
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Abstract
The invention relates to the technical field of motors, in particular to a rare-earth permanent magnet motor. The rare-earth permanent magnet motor comprises a motor shell, a stator group and a rotor group, wherein the stator group is arranged along the circumferential direction of the inner side surface of the motor shell; the rotor group is positioned in the motor shell through a bearing, and comprises a motor rotating shaft, a rotor body and a rare-earth permanent magnet; the rotor body sleeves the motor rotating shaft; the rare-earth permanent magnet is arranged on the outer side surface of the rotor body, and is arranged in the stator group in a penetrating manner; a rotor cavity is formed between the rotor body and the motor rotating shaft in a sealing manner; at least two paths of cooling medium channels which are communicated with the rotor cavity are axially formed in the motor rotating shaft; and openings in the outer sides of the cooling medium channels are formed in the motor rotating shaft on the outer side of the motor shell. The rare-earth permanent magnet motor has the advantages of novel structure and good heat dissipation effect.
Description
Technical field
The present invention relates to technical field of motors, particularly relate to a kind of rare-earth permanent-magnet electric machine.
background technology,
Rare-earth permanent-magnet electric machine adopts the magnetic property of rare earth permanent-magnetic material excellent, no longer needs external energy just can set up very strong permanent-magnetic field after magnetizing, and is used for the electric excitation place of alternative conventional motors.Therefore, rare-earth permanent-magnet electric machine not only efficiency is high, and structure is simple, reliable, has the advantages such as little, the lightweight and energy-conservation 5%-60% of volume.But rare-earth permanent-magnet electric machine also exists most fatal defects, after namely motor temperature rises, to the irreversible loss of excitation of rare earth, cause motor damage, even may cause the accident; And existing rare-earth permanent-magnet electric machine all adopts ventilating and cooling, but the very little motor internal that causes in the gap between rotor and stator is very compact, cannot reach good cooling.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of rare-earth permanent-magnet electric machine, this rare-earth permanent-magnet electric machine has novel structure, the advantage of good heat dissipation effect.
In order to realize above-mentioned object, present invention employs following technical scheme:
A kind of rare-earth permanent-magnet electric machine, comprises electric machine casing, and along the stator pack that electric machine casing medial surface circumference is arranged, and the rotor set in electric machine casing is positioned at by bearing; Described rotor set comprises machine shaft, and is set in the rotor block on machine shaft, and is arranged on the rare-earth permanent magnet on rotor block lateral surface; Rare-earth permanent magnet is located in stator pack; Seal between described rotor block and machine shaft and form rotor chamber, the axial coolant guiding channel being at least provided with two-way and communicating with rotor chamber in the inside of machine shaft, the outer openings of coolant guiding channel is all on the machine shaft outside electric machine casing.
As preferably, described coolant guiding channel comprises medium flow channel and medium flow pass, and the outer openings of medium flow channel is opened in machine shaft axial end center, and the outer openings of medium flow pass is opened on machine shaft axial end.
As preferably, the interior side opening of described medium flow channel and the inner side opening of medium flow pass are in the axial both sides of rotor chamber; During use, coolant flows in rotor chamber by medium flow channel, rotor chamber is filled full after flowed out by medium flow pass, the axial both sides that the inner side opening of medium flow channel and medium flow pass two-way is in rotor chamber are conducive to increasing heat exchanger time, reach the object of fully heat radiation.
As preferably, the inside of described machine shaft is provided with many medium flow pass, many medium flow pass regular circumferential regular distribution centered by medium flow channel; Namely many medium flow pass are along machine shaft center regular distribution, thus rotor chamber internal heat dissipating can be made even.
As preferably, described electric machine casing is provided with fin along its face, outer circumferential, the axial end of electric machine casing is provided with shell protective cover, forms heat dissipation cavity between shell protective cover and electric machine casing, and the end of heat dissipation cavity communicates with fin; Be provided with fan blade in described heat dissipation cavity, blade sleeve is located on the machine shaft between electric machine casing and shell protective cover; Under this structure, machine shaft offers coolant guiding channel and is mainly used in cooled rotor group temperature, fan blade then for the surface temperature of cooling motor housing, by arranging fin, the surface temperature better heat-radiation effect of electric machine casing.
As preferably, described stator pack comprises the silicon steel sheet be arranged on electric machine casing circumference medial surface, and is arranged on the coil groups on silicon steel sheet.
The present invention adopts technique scheme, seals and form rotor chamber between the rotor block of this rare-earth permanent-magnet electric machine and machine shaft, and the inside of machine shaft axially offers the coolant guiding channel communicated with rotor chamber; When motor uses, coolant (being generally cooling water) can be passed into by medium flow channel, coolant is flowed out by medium flow pass via after rotor chamber, in whole process, coolant and rotor set carry out heat exchange, compared to traditional ventilating and cooling mode, this rare-earth permanent-magnet electric machine has novel structure, the advantage of good heat dissipation effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the invention are described in further detail.
A kind of rare-earth permanent-magnet electric machine as shown in Figure 1, comprises electric machine casing 1, and along the stator pack that electric machine casing 1 medial surface circumference is arranged, and be positioned at the rotor set in electric machine casing 1 by bearing.Described stator pack comprises the silicon steel sheet 21 be arranged on the circumferential medial surface of electric machine casing 1, and is arranged on the coil groups 22 on silicon steel sheet 21.
Described rotor set comprises machine shaft 31, and is set in the rotor block 32 on machine shaft 31, and is arranged on the rare-earth permanent magnet 33 on rotor block 32 lateral surface, and rare-earth permanent magnet 33 is located in stator pack; Seal between described rotor block 32 and machine shaft 31 and form rotor chamber 34, the axial coolant guiding channel being at least provided with two-way and communicating with rotor chamber 34 in the inside of machine shaft 31, coolant guiding channel comprises medium flow channel 311 and medium flow pass 312, the outer openings of medium flow channel 311 is opened in the machine shaft 31 axial end center outside electric machine casing 1, and the outer openings of medium flow pass 312 is opened on machine shaft 31 axial end outside electric machine casing 1.The interior side opening of described medium flow channel 311 and the inner side opening of medium flow pass 312 are in the axial both sides of rotor chamber 34; During use, coolant flows in rotor chamber 34 by medium flow channel 311, rotor chamber 34 is filled completely and flowed out by medium flow pass 312, the axial both sides that the inner side opening of medium flow channel 311 and medium flow pass 312 two-way is in rotor chamber 34 are conducive to increasing heat exchanger time, reach the object of fully heat radiation.In addition, the inside of machine shaft 31 can be provided with many medium flow pass 312, many medium flow pass 312 regular circumferential regular distribution centered by medium flow channel 311; Namely many medium flow pass 312 are along machine shaft 31 center regular distribution, thus rotor chamber 34 internal heat dissipating can be made even.
Described electric machine casing 1 is provided with fin 42 along its face, outer circumferential, and the axial end of electric machine casing 1 is provided with shell protective cover, forms heat dissipation cavity 41 between shell protective cover 4 and electric machine casing 1, and the end of heat dissipation cavity 41 communicates with fin 42; Be provided with fan blade 43 in described heat dissipation cavity 41, fan blade 43 is set on the machine shaft 31 between electric machine casing 1 and shell protective cover 4; Under this structure, machine shaft 31 offers coolant guiding channel and be mainly used in cooled rotor group temperature, fan blade 43 surface temperatures for cooling motor housing 1, by arranging fin 42, the surface temperature better heat-radiation effect of electric machine casing 1.
In sum, seal and form rotor chamber 34 between the rotor block 32 of this rare-earth permanent-magnet electric machine and machine shaft 31, the inside of machine shaft 31 axially offers the coolant guiding channel communicated with rotor chamber 34; When motor uses, coolant (being generally cooling water) can be passed into by medium flow channel 311, coolant is flowed out by medium flow pass 312 via after rotor chamber 34, in whole process, coolant and rotor set carry out heat exchange, compared to traditional ventilating and cooling mode, this rare-earth permanent-magnet electric machine has novel structure, the advantage of good heat dissipation effect.
Claims (6)
1. a rare-earth permanent-magnet electric machine, comprises electric machine casing, and along the stator pack that electric machine casing medial surface circumference is arranged, and the rotor set in electric machine casing is positioned at by bearing; Described rotor set comprises machine shaft, and is set in the rotor block on machine shaft, and is arranged on the rare-earth permanent magnet on rotor block lateral surface; Rare-earth permanent magnet is located in stator pack; It is characterized in that: seal between described rotor block and machine shaft and form rotor chamber, the axial coolant guiding channel being at least provided with two-way and communicating with rotor chamber in the inside of machine shaft, the outer openings of coolant guiding channel is all on the machine shaft outside electric machine casing.
2. a kind of rare-earth permanent-magnet electric machine according to claim 1, it is characterized in that: described coolant guiding channel comprises medium flow channel and medium flow pass, the outer openings of medium flow channel is opened in machine shaft axial end center, and the outer openings of medium flow pass is opened on machine shaft axial end.
3. a kind of rare-earth permanent-magnet electric machine according to claim 2, is characterized in that: the interior side opening of described medium flow channel and the inner side opening of medium flow pass are in the axial both sides of rotor chamber.
4. a kind of rare-earth permanent-magnet electric machine according to claim 3, is characterized in that: the inside of described machine shaft is provided with many medium flow pass, many medium flow pass regular circumferential regular distribution centered by medium flow channel.
5. a kind of rare-earth permanent-magnet electric machine according to claim 1, it is characterized in that: described electric machine casing is provided with fin along its face, outer circumferential, the axial end of electric machine casing is provided with shell protective cover, form heat dissipation cavity between shell protective cover and electric machine casing, the end of heat dissipation cavity communicates with fin; Be provided with fan blade in described heat dissipation cavity, blade sleeve is located on the machine shaft between electric machine casing and shell protective cover.
6. a kind of rare-earth permanent-magnet electric machine according to claim 1 or 5, is characterized in that: described stator pack comprises the silicon steel sheet be arranged on electric machine casing circumference medial surface, and is arranged on the coil groups on silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608305.5A CN105099079A (en) | 2015-09-22 | 2015-09-22 | Rare-earth permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608305.5A CN105099079A (en) | 2015-09-22 | 2015-09-22 | Rare-earth permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105099079A true CN105099079A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510608305.5A Pending CN105099079A (en) | 2015-09-22 | 2015-09-22 | Rare-earth permanent magnet motor |
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| CN (1) | CN105099079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370292A (en) * | 2017-07-31 | 2017-11-21 | 中车唐山机车车辆有限公司 | The cooling device of magneto |
| CN108475968A (en) * | 2015-11-30 | 2018-08-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | The hollow rotor shaft of assembling with cooling medium distribution member |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087287A2 (en) * | 1982-02-19 | 1983-08-31 | Hitachi, Ltd. | Electric rotary machine having superconducting rotor |
| US5189325A (en) * | 1990-06-15 | 1993-02-23 | General Electric Company | Liquid cooling the rotor of an electrical machine |
| CN201774387U (en) * | 2010-09-01 | 2011-03-23 | 南阳防爆集团股份有限公司 | Low-voltage and high-power cooling dome of electric motor |
| CN104578504A (en) * | 2014-12-31 | 2015-04-29 | 天津市松正电动汽车技术股份有限公司 | Motor with rotor cooled |
| CN204906105U (en) * | 2015-09-22 | 2015-12-23 | 丽水市金信电机有限公司 | Tombarthite permanent -magnet machine |
-
2015
- 2015-09-22 CN CN201510608305.5A patent/CN105099079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087287A2 (en) * | 1982-02-19 | 1983-08-31 | Hitachi, Ltd. | Electric rotary machine having superconducting rotor |
| US5189325A (en) * | 1990-06-15 | 1993-02-23 | General Electric Company | Liquid cooling the rotor of an electrical machine |
| CN201774387U (en) * | 2010-09-01 | 2011-03-23 | 南阳防爆集团股份有限公司 | Low-voltage and high-power cooling dome of electric motor |
| CN104578504A (en) * | 2014-12-31 | 2015-04-29 | 天津市松正电动汽车技术股份有限公司 | Motor with rotor cooled |
| CN204906105U (en) * | 2015-09-22 | 2015-12-23 | 丽水市金信电机有限公司 | Tombarthite permanent -magnet machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108475968A (en) * | 2015-11-30 | 2018-08-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | The hollow rotor shaft of assembling with cooling medium distribution member |
| US10790725B2 (en) | 2015-11-30 | 2020-09-29 | Thyssenkrupp Presta Teccenter Ag | Assembled hollow rotor shaft having a cooling-medium distribution element |
| CN108475968B (en) * | 2015-11-30 | 2020-09-29 | 蒂森克虏伯普利斯坦技术中心股份公司 | Assembled hollow rotor shaft with cooling medium distribution elements |
| CN107370292A (en) * | 2017-07-31 | 2017-11-21 | 中车唐山机车车辆有限公司 | The cooling device of magneto |
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Application publication date: 20151125 |
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| RJ01 | Rejection of invention patent application after publication |