CN203481953U - Motor rotor - Google Patents
Motor rotor Download PDFInfo
- Publication number
- CN203481953U CN203481953U CN201320540987.7U CN201320540987U CN203481953U CN 203481953 U CN203481953 U CN 203481953U CN 201320540987 U CN201320540987 U CN 201320540987U CN 203481953 U CN203481953 U CN 203481953U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- permanent magnet
- rotor
- eddy current
- sleeve pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Motor Or Generator Cooling System (AREA)
Abstract
A motor rotor comprises a mandrel, a vortex sleeve disposed on the partial periphery of the mandrel and a permanent magnet arranged on the mandrel. A channel is arranged inside the mandrel, a gas-liquid core is arranged in the channel, and the channel is communicated with the vortex sleeve. The tail ends, in the length extension direction of the mandrel, of the permanent magnet are respectively provided with a magnetism isolation ring, and the periphery of the permanent magnet and the magnetism isolation rings is sleeved with a protective sleeve. The vortex sleeve is arranged outside the protective sleeve, and a gap is reserved between the vortex sleeve and the protective sleeve. The vortex sleeve, the protective sleeve and the channel of the mandrel form a closed cavity. According to the motor rotor, the temperature of the rotor (the permanent magnet) can be effectively lowered, the power consumption of a motor is reduced, and the efficiency of the motor is improved.
Description
Technical field
The utility model relates to a kind of rotor, relates in particular to a kind of Large-power High-Speed rotor.
Background technology
Existing high speed rotor structure is mainly comprised of structures such as pretective sleeve pipe, permanent magnet and mandrels.Wherein pretective sleeve pipe material is selected following two kinds conventionally: a kind of is metallic sheath cylinder, another kind is fiber sleeve, wherein in metallic sheath cylinder, metallic sheath and permanent magnet material are electric conducting material, armature reaction harmonics magnetic fields during for motor operation, at rotor jacket cylinder superficial layer, produce main eddy current, temperature of rotor is raise.And fiber sleeve produces without eddy current, but permanent magnet, mandrel can produce a certain amount of eddy current, and temperature also can raise, and by fiber sleeve, are difficult to heat to derive, and temperature of rotor is raise.
For above-mentioned reasons and existing rotor dispersing heat condition limited, temperature of rotor can progressively raise, and when rotor raises while surpassing certain numerical value in hot operation or temperature, will cause the decay of permanent magnet irreversible demagnetization, motor performance progressively declines, and then has lost the power savings advantages of permanent magnetic asyn high-speed electric machine.
Therefore, the necessary deficiency of prior art being improved to solve prior art.
Summary of the invention
The utility model provides a kind of rotor, and it can effectively solve the heating problem of magnetic suspension permanent magnet synchronous high-speed rotor.
The utility model adopts following technical scheme: a kind of rotor, it comprises mandrel, be positioned at the eddy current cover of mandrel local peripheral and be installed on the permanent magnet on mandrel, described mandrel inside is provided with passage, in described passage, be provided with gas-liquid core, described passage communicates with described eddy current cover, described permanent magnet is respectively equipped with a magnetism-isolating loop along the end of mandrel length bearing of trend, the outer race of described permanent magnet and magnetism-isolating loop is provided with a pretective sleeve pipe, described eddy current overlap the outside of described pretective sleeve pipe and and described pretective sleeve pipe between leave gap, described eddy current cover, the passage of pretective sleeve pipe and mandrel forms a closed cavity.
The length bearing of trend of described passage is consistent with the length bearing of trend of described mandrel
The utlity model has following beneficial effect: in the utility model when temperature of rotor is elevated to uniform temperature, in the closed cavity of rotor, filling working medium starts gasification, rapidly temperature is conducted to low temperature position (axle two ends) from high temperature position, meet cold rear working medium by gaseous state liquefy, liquid along eddy current cover, pretective sleeve pipe and mandrel internal face flow to heating high temperature position, the process that working medium is returned along wall is the process cooling to rotor thermal source, the utility model rotor can effectively reduce rotor (permanent magnet) temperature, reduce motor power consumption and then improve electric efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model rotor.
Embodiment
Please refer to shown in Fig. 1, the utility model rotor comprises mandrel 1, is positioned at the eddy current cover 2 of mandrel 1 local peripheral, is provided with passage 3 on mandrel 1, and this passage 3 communicates with eddy current cover 2.In the passage 3 of mandrel 1, be also provided with gas-liquid core 4, this gas-liquid core 4 is used for controlling the effect of gas one way flow and pretective sleeve pipe outer wall, the flow ratio of eddy current cover, mandrel inwall liquid.Wherein the length bearing of trend of passage 3 and the length bearing of trend of described mandrel 1 are consistent.The utility model rotor also includes the permanent magnet 5 being installed on mandrel 1, and this permanent magnet 5 is respectively equipped with a magnetism-isolating loop 6 along two ends of mandrel 1 length bearing of trend, in the outer race of permanent magnet 5 and magnetism-isolating loop 6, is provided with a pretective sleeve pipe 7.Between pretective sleeve pipe 7 and eddy current cover 2, leave space, wherein the passage 3 of eddy current cover 2, pretective sleeve pipe 7 and mandrel 1 forms a closed cavity.
The course of work of the utility model rotor is as follows: during machine operation, rotor high-speed rotation, under magnetic fields, at eddy current cover 2 and the interior generation eddy current of pretective sleeve pipe 7 (main heat), eddy current overlaps the 2 outer generation wind heat that rubs, and then rotor eddy current cover 2 and pretective sleeve pipe 7 temperature are raise.Pretective sleeve pipe 7 heats are delivered to mandrel 1 by permanent magnet 5.Temperature of rotor rising makes filling at eddy current cover 2, working medium in the closed cavity that the passage 3 of pretective sleeve pipe 7 and mandrel 1 forms starts gasification, rapidly temperature is conducted to low temperature position (axle two ends) from high temperature position, meet cold rear working medium by gaseous state liquefy, liquid along eddy current cover 2, pretective sleeve pipe 7 and mandrel 1 internal face flow to heating high temperature position, the process that working medium is returned along wall is the process cooling to rotor thermal source, working medium is at the eddy current cover 2 of rotor, in the closed cavity that the passage 3 of pretective sleeve pipe 7 and mandrel 1 forms, carry out gasification-liquefaction, heat conduction finally reaches the object that reduces rotor (permanent magnet) temperature.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art, under the prerequisite that does not depart from the utility model principle, can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (2)
1. a rotor, it comprises mandrel (1), be positioned at the eddy current cover (2) of mandrel (1) local peripheral and be installed on the permanent magnet (5) on mandrel (1), it is characterized in that: described mandrel (1) inside is provided with passage (3), in described passage (3), be provided with gas-liquid core (4), described passage (3) communicates with described eddy current cover (2), described permanent magnet (5) is respectively equipped with a magnetism-isolating loop (6) along the end of mandrel (1) length bearing of trend, the outer race of described permanent magnet (5) and magnetism-isolating loop (6) is provided with a pretective sleeve pipe (7), described eddy current cover (2) be positioned at described pretective sleeve pipe (7) outside and and described pretective sleeve pipe (7) between leave gap, described eddy current cover (2), the passage (3) of pretective sleeve pipe (7) and mandrel (1) forms a closed cavity.
2. a kind of rotor as claimed in claim 1, is characterized in that: the length bearing of trend of described passage (3) is consistent with the length bearing of trend of described mandrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320540987.7U CN203481953U (en) | 2013-09-02 | 2013-09-02 | Motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320540987.7U CN203481953U (en) | 2013-09-02 | 2013-09-02 | Motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481953U true CN203481953U (en) | 2014-03-12 |
Family
ID=50230206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320540987.7U Expired - Lifetime CN203481953U (en) | 2013-09-02 | 2013-09-02 | Motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481953U (en) |
-
2013
- 2013-09-02 CN CN201320540987.7U patent/CN203481953U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211102 No.99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co.,Ltd. Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU Ltd.,Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |