CN104184237A - Cooling structure of high-speed motor rotor - Google Patents
Cooling structure of high-speed motor rotor Download PDFInfo
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- CN104184237A CN104184237A CN201410403719.XA CN201410403719A CN104184237A CN 104184237 A CN104184237 A CN 104184237A CN 201410403719 A CN201410403719 A CN 201410403719A CN 104184237 A CN104184237 A CN 104184237A
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- rotor
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- electric machine
- machine casing
- cooling structure
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Abstract
The invention relates to a cooling structure of a high-speed motor rotor. The cooling structure of the high-speed motor rotor comprises a motor shell, the motor rotor, a motor stator and a cooling air inlet nozzle, wherein the motor rotor is installed on the motor shell, the motor stator is arranged on the radial outer portion of the motor rotor, a rotor separation sleeve is installed on the motor shell in a sealing mode and is located between the motor rotor and the motor stator, a deep hole directly reaching the tail part is formed in the middle of the motor rotor, the cooling air inlet nozzle is installed on the motor shell, an exhaust hole communicated with the outside is formed in the bottom of the deep hole, and an air inlet hole is further formed in the motor shell and is communicated with an annular gap between the rotor separation sleeve and the motor rotor. The cooling structure of the high-speed motor rotor is simple in structure, good in cooling effect and capable of cooling the high-speed motor rotor and ensuring the normal working of a motor.
Description
Technical field
The present invention relates to a kind of cooling structure, especially a kind of cooling structure of high speed rotor of motor.
Background technology
High Speed Permanent Magnet Synchronous Generator is because rotating speed is higher, and general rotating speed is greater than 12,000r/min, and the power density of motor is large, and its physical dimension, much smaller than the identical middle slowspeed machine of power output, can be saved material effectively; Because the moment of inertia of high-speed permanent magnet motor is less, so dynamic response is very fast; High-speed permanent magnet motor can directly be connected with prime mover or load, has saved traditional mechanical variable speed device, thereby can reduce the efficiency of noise and raising drive system.High-speed permanent magnet motor, owing to having the remarkable advantages such as rotating speed is high, motor size is little, power density is large, efficiency is high, has been widely used in the fields such as Aero-Space, flywheel energy storage, electric tool, centrifugal compressor, micro-turbo generator.
Because rotating speed is high, the rotor of motor is generally designed to stronger magnetic.Rotor, in the time of work, due to the existence of current vortex and hysteresis, can make rotor produce certain heat; Because of the High Rotation Speed of rotor, the outer surface of rotor and windage, also can produce certain heat simultaneously, the mutual stack of these a few part heats, and the temperature of rotor can reach more than 100 DEG C.Because the permanent magnet of rotor is generally selected neodymium iron boron, at high temperature easily there is irreversible loss of excitation in this permanent magnet, causes the magnetic flux of rotor to decline, and will cause the decline of motor product generated output, therefore, need to design a kind of cooling structure of high speed rotor of motor.
Summary of the invention
The object of this invention is to provide a kind of high speed rotor of motor cooling structure, can realize the cooling of high speed rotor of motor, guarantee rotor is normally worked.
Technical solution of the present invention is as follows: high speed rotor of motor cooling structure comprises electric machine casing, rotor, motor stator, cold gas import connects mouth, labyrinth seal, rotor divides spacer, rotor is arranged on electric machine casing by bearing, between rotor and electric machine casing, be provided with flow of oil for the stoping bearing place labyrinth seal to rotor, the radially outer of rotor is provided with motor stator, described rotor divides spacer sealing to be arranged on electric machine casing, between rotor and motor stator, and and rotor between leave annular gap, described one end, annular gap terminates in labyrinth seal, the other end by between electric machine casing and rotor with exterior, the middle part of described rotor is provided with the deep hole of through afterbody, cold gas import connects mouth and is arranged on electric machine casing, and extend to the position, aperture at rotor middle part, the bottom of deep hole is provided with the steam vent with exterior, on electric machine casing, be also provided with air admission hole, described air admission hole is positioned near labyrinth seal, and divide the annular gap between spacer and rotor to communicate with rotor.Described rotor afterbody is provided with the air collecting chamber with exterior, and steam vent and annular gap all communicate with air collecting chamber.Described steam vent is uniform.Electric machine casing and rotor divide and between spacer, are provided with sealing ring.
The present invention, by being provided with pressure-air passage, can introduce pressure-air in the time of machine operation, implements respectively cooling from rotor inside and outside.Of the present invention simple in structure, good cooling results, can realize the cooling of high speed rotor of motor, has ensured the normal work of motor.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the I place enlarged drawing of Fig. 1;
Fig. 3 is the II place enlarged drawing of Fig. 1.
Embodiment
As shown in the figure, high speed rotor of motor cooling structure comprises electric machine casing 5, rotor 7, motor stator 8, cold gas import connects mouth 1, labyrinth seal 3, rotor divides spacer 6, rotor 7 is arranged on electric machine casing 5 by bearing 2, between rotor 7 and electric machine casing 5, be provided with flow of oil for the stoping bearing 2 places labyrinth seal 3 to rotor 7, the radially outer of rotor 7 is provided with motor stator 8, described rotor divides spacer 6 sealings to be arranged on electric machine casing, between rotor 7 and motor stator 8, and and rotor 7 between leave annular gap, described one end, annular gap terminates in labyrinth seal 3, the other end by between electric machine casing 5 and rotor 7 with exterior, the middle part of described rotor 7 is provided with the deep hole of through afterbody, cold gas import connects mouth 1 and is arranged on electric machine casing 5, and extend to the position, aperture at rotor 7 middle parts, the bottom of deep hole is provided with the steam vent 9 with exterior, on electric machine casing 5, be also provided with air admission hole 4, described air admission hole 4 is positioned near labyrinth seal 3, and divide the annular gap between spacer 6 and rotor 7 to communicate with rotor.Described rotor 7 afterbodys are provided with the air collecting chamber 10 with exterior, and steam vent 9 and annular gap all communicate with air collecting chamber 10.Described steam vent 9 is uniform 4.Electric machine casing 5 and rotor divide and between spacer 6, are provided with sealing ring 11.
In the time of work, pressure-air connects mouth 1 by cold gas import and is blown into, and by the middle part deep hole of rotor 7, enters into air collecting chamber 10 discharge from steam vent 9, and in whole process, pressure-air carries out cooling in inside to rotor 7; Meanwhile, pressure-air also enters into annular gap by the air admission hole 4 on electric machine casing 5, finally discharges by air collecting chamber 10, and pressure-air carries out further cooling in outside to rotor 7.Meanwhile, the pressure-air that air admission hole 4 enters can also act on labyrinth seal 3, makes the both sides of labyrinth seal 3 form pressure reduction, further stops that the lubricating oil at bearing 2 places flows into rotor 7.
Claims (4)
1. the cooling structure of a high speed rotor of motor, it is characterized in that, described structure comprises electric machine casing (5), rotor (7), motor stator (8), cold gas import connects mouth (1), labyrinth seal (3), rotor divides spacer (6), rotor (7) is arranged on electric machine casing (5) by bearing (2), between rotor (7) and electric machine casing (5), be provided with for stoping flow of oil that bearing (2) the locates labyrinth seal (3) to rotor (7), the radially outer of rotor (7) is provided with motor stator (8), described rotor divides spacer (6) sealing to be arranged on electric machine casing, be positioned between rotor (7) and motor stator (8), and and rotor (7) between leave annular gap, described one end, annular gap terminates in labyrinth seal (3), the other end by between electric machine casing (5) and rotor (7) with exterior, the middle part of described rotor (7) is provided with the deep hole of through afterbody, cold gas import connects mouth (1) and is arranged on electric machine casing (5), and extend to the position, aperture at rotor (7) middle part, the bottom of deep hole is provided with the steam vent (9) with exterior, on electric machine casing (5), be also provided with air admission hole (4), described air admission hole (4) is positioned near labyrinth seal (3), and divide the annular gap between spacer (6) and rotor (7) to communicate with rotor.
2. the cooling structure of a kind of high speed rotor of motor as claimed in claim 1, it is characterized in that, described rotor (7) afterbody is provided with the air collecting chamber (10) with exterior, and steam vent (9) and annular gap all communicate with air collecting chamber (10).
3. the cooling structure of a kind of high speed rotor of motor as claimed in claim 1, is characterized in that, described steam vent (9) is uniform 4.
4. the cooling structure of a kind of high speed rotor of motor as claimed in claim 1, is characterized in that, electric machine casing (5) and rotor divide and between spacer (6), be provided with sealing ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403719.XA CN104184237B (en) | 2014-08-15 | 2014-08-15 | A kind of cooling structure of high speed rotor of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403719.XA CN104184237B (en) | 2014-08-15 | 2014-08-15 | A kind of cooling structure of high speed rotor of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104184237A true CN104184237A (en) | 2014-12-03 |
| CN104184237B CN104184237B (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410403719.XA Active CN104184237B (en) | 2014-08-15 | 2014-08-15 | A kind of cooling structure of high speed rotor of motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104184237B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004364466A (en) * | 2003-06-09 | 2004-12-24 | Toyo Electric Mfg Co Ltd | Main electric motor for vehicle |
| CN102322448A (en) * | 2011-09-02 | 2012-01-18 | 西安交通大学 | Cooling structure of motor-driven high-speed centrifugal air compressor |
| CN203051748U (en) * | 2012-12-17 | 2013-07-10 | 贵州永红航空机械有限责任公司 | Improved structure of sealing element for turbine cooler |
| CN103236751A (en) * | 2013-04-17 | 2013-08-07 | 西安交通大学 | Cooling structure of high-speed permanent-magnet synchronous motor |
| JP2013258889A (en) * | 2012-05-17 | 2013-12-26 | Toyota Industries Corp | Induction motor |
| CN204103634U (en) * | 2014-08-15 | 2015-01-14 | 哈尔滨东安发动机（集团）有限公司 | A kind of cooling structure of high speed rotor of motor |
-
2014
- 2014-08-15 CN CN201410403719.XA patent/CN104184237B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004364466A (en) * | 2003-06-09 | 2004-12-24 | Toyo Electric Mfg Co Ltd | Main electric motor for vehicle |
| CN102322448A (en) * | 2011-09-02 | 2012-01-18 | 西安交通大学 | Cooling structure of motor-driven high-speed centrifugal air compressor |
| JP2013258889A (en) * | 2012-05-17 | 2013-12-26 | Toyota Industries Corp | Induction motor |
| CN203051748U (en) * | 2012-12-17 | 2013-07-10 | 贵州永红航空机械有限责任公司 | Improved structure of sealing element for turbine cooler |
| CN103236751A (en) * | 2013-04-17 | 2013-08-07 | 西安交通大学 | Cooling structure of high-speed permanent-magnet synchronous motor |
| CN204103634U (en) * | 2014-08-15 | 2015-01-14 | 哈尔滨东安发动机（集团）有限公司 | A kind of cooling structure of high speed rotor of motor |
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| Publication number | Publication date |
|---|---|
| CN104184237B (en) | 2016-06-22 |
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