CN104184237B - A kind of cooling structure of high speed rotor of motor - Google Patents
A kind of cooling structure of high speed rotor of motor Download PDFInfo
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- CN104184237B CN104184237B CN201410403719.XA CN201410403719A CN104184237B CN 104184237 B CN104184237 B CN 104184237B CN 201410403719 A CN201410403719 A CN 201410403719A CN 104184237 B CN104184237 B CN 104184237B
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Abstract
The present invention relates to the cooling structure of a kind of high speed rotor of motor, including electric machine casing, rotor, motor stator, cooling gas import is spigot joint, rotor is arranged on electric machine casing, the radially outer of rotor is provided with motor stator, rotor separates set and is sealingly mounted on electric machine casing, between rotor and motor stator, the middle part of described rotor is provided with the deep hole of through afterbody, gas import is spigot joint is arranged on electric machine casing in cooling, the bottom of deep hole is provided with the steam vent communicated with outside, electric machine casing is additionally provided with air inlet, and communicate with the annular gap between rotor separation set and rotor。The simple in construction of the present invention, good cooling results, it is possible to achieve the cooling of high speed rotor of motor, it is ensured that the normal operation of motor。
Description
Technical field
The present invention relates to a kind of cooling structure, the cooling structure of especially a kind of high speed rotor of motor。
Background technology
High Speed Permanent Magnet Synchronous Generator is higher due to rotating speed, and general rotating speed is greater than 12,000r/min, and the power density of motor is big, the middle slowspeed machine that its physical dimension is identical much smaller than output, it is possible to effectively save material；Owing to the rotary inertia of high-speed permanent magnet motor is less, so dynamic response is very fast；High-speed permanent magnet motor can be joined directly together with prime mover or load, eliminates traditional mechanical variable speed device, thus can reduce noise and improve the efficiency of drive system。High-speed permanent magnet motor, owing to having the remarkable advantages such as rotating speed height, motor size is little, power density is big, efficiency is high, is widely used to the fields such as Aero-Space, flywheel energy storage, electric tool, centrifugal compressor, micro-steam turbine generator。
Owing to rotating speed is high, the rotor of motor is generally configured to stronger magnetic。Rotor operationally, due to the existence of current vortex and hysteresis, can make rotor produce certain heat；Simultaneously as the high speed rotating of rotor, the outer surface of rotor and windage, also producing certain heat, being overlapped mutually of these several partial heat, the temperature of rotor can reach more than 100 DEG C。Owing to the permanent magnet of rotor is typically chosen neodymium iron boron, this permanent magnet is at high temperature susceptible to irreversible loss of excitation, causes the magnetic flux of rotor to decline, will cause the decline of motor product generated output, accordingly, it would be desirable to design the cooling structure of a kind of high speed rotor of motor。
Summary of the invention
It is an object of the invention to provide a kind of high speed rotor of motor cooling structure, it is possible to achieve the cooling of high speed rotor of motor, it is ensured that rotor normal operation。
The technical solution of the present invention is as follows: high speed rotor of motor cooling structure includes electric machine casing, rotor, motor stator, cooling gas import is spigot joint, labyrinth seal, rotor separates set, rotor is arranged on electric machine casing by bearing, the labyrinth seal of lubricating oil flow direction motor rotor for stoping bearing place it is provided with between rotor and electric machine casing, the radially outer of rotor is provided with motor stator, described rotor separates set and is sealingly mounted 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 is by communicating with outside between electric machine casing and rotor, the middle part of described rotor is provided with the deep hole of through afterbody, gas import is spigot joint is arranged on electric machine casing in cooling, and extend to the orifice position in the middle part of rotor, the bottom of deep hole is provided with the steam vent communicated with outside, electric machine casing is additionally provided with air inlet, described air inlet is positioned near labyrinth seal, and communicate with the annular gap between rotor separation set and rotor。Described rotor afterbody is provided with the air collecting chamber communicated with outside, steam vent and annular gap and all communicates with air collecting chamber。Described steam vent is uniform。It is provided with sealing ring between electric machine casing and rotor separation set。
The present invention is provided by high air pressure passages, it is possible to introduce pressure-air when motor works, and inside and outside from rotor implements cooling respectively。The simple in construction of the present invention, good cooling results, it is possible to achieve the cooling of high speed rotor of motor, it is ensured that the normal operation of motor。
Accompanying drawing explanation
Fig. 1 is the 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。
Detailed description of the invention
As shown in the figure, high speed rotor of motor cooling structure includes electric machine casing 5, rotor 7, motor stator 8, cooling gas import spigot joint 1, labyrinth seal 3, rotor separates set 6, rotor 7 is arranged on electric machine casing 5 by bearing 2, the labyrinth seal 3 of lubricating oil flow direction motor rotor 7 for stoping bearing 2 place it is provided with between rotor 7 and electric machine casing 5, the radially outer of rotor 7 is provided with motor stator 8, described rotor separates set 6 and is sealingly mounted 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 is by communicating with outside between electric machine casing 5 and rotor 7, the middle part of described rotor 7 is provided with the deep hole of through afterbody, cooling gas import spigot joint 1 is arranged on electric machine casing 5, and extend to the orifice position in the middle part of rotor 7, the bottom of deep hole is provided with the steam vent 9 communicated with outside, electric machine casing 5 is additionally provided with air inlet 4, described air inlet 4 is positioned near labyrinth seal 3, and communicate with the annular gap between rotor separation set 6 and rotor 7。Described rotor 7 afterbody is provided with the air collecting chamber 10 communicated with outside, and steam vent 9 and annular gap all communicate with air collecting chamber 10。Described steam vent 9 is uniform 4。It is provided with sealing ring 11 between electric machine casing 5 and rotor separation set 6。
Operationally, pressure-air is blown into by cooling down gas import spigot joint 1, by the middle part deep hole of rotor 7, enters into air collecting chamber 10 from steam vent 9 and discharges, and in whole process, rotor 7 is cooled down by pressure-air in inside；Meanwhile, pressure-air enters into annular gap also by the air inlet 4 on electric machine casing 5, discharges eventually through air collecting chamber 10, and rotor 7 is further cooled down by pressure-air in outside。Meanwhile, the pressure-air that air inlet 4 enters may also act on labyrinth seal 3, makes the both sides of labyrinth seal 3 form pressure reduction, stops that the lubricating oil at bearing 2 place flows into rotor 7 further。
Claims (4)
1. the cooling structure of a high speed rotor of motor, it is characterized in that, described structure includes electric machine casing (5), rotor (7), motor stator (8), cooling gas import spigot joint (1), labyrinth seal (3), rotor separates set (6), rotor (7) is arranged on electric machine casing (5) by bearing (2), the labyrinth seal (3) of lubricating oil flow direction motor rotor (7) for stoping bearing (2) place it is provided with between rotor (7) and electric machine casing (5), the radially outer of rotor (7) is provided with motor stator (8), described rotor separates set (6) and is sealingly mounted on electric machine casing, it is 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 is by communicating with outside between electric machine casing (5) and rotor (7), the middle part of described rotor (7) is provided with the deep hole of through afterbody, cooling gas import spigot joint (1) is arranged on electric machine casing (5), and extend to the orifice position at rotor (7) middle part, the bottom of deep hole is provided with the steam vent (9) communicated with outside, electric machine casing (5) is additionally provided with air inlet (4), described air inlet (4) is positioned near labyrinth seal (3), and communicate with the annular gap between rotor separation set (6) and rotor (7)。
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) communicated with outside, 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, is provided with sealing ring (11) between electric machine casing (5) and rotor separation set (6)。
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 CN104184237A (en) | 2014-12-03 |
| CN104184237B true CN104184237B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410403719.XA Active CN104184237B (en) | 2014-08-15 | 2014-08-15 | A kind of cooling structure of high speed rotor of motor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4397180B2 (en) * | 2003-06-09 | 2010-01-13 | 東洋電機製造株式会社 | Main motor for vehicles |
| JP2013258889A (en) * | 2012-05-17 | 2013-12-26 | Toyota Industries Corp | Induction motor |
-
2014
- 2014-08-15 CN CN201410403719.XA patent/CN104184237B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN104184237A (en) | 2014-12-03 |
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