CN206226158U - A kind of cooling structure of permanent-magnetic synchronous motor rotor - Google Patents
A kind of cooling structure of permanent-magnetic synchronous motor rotor Download PDFInfo
- Publication number
- CN206226158U CN206226158U CN201621354944.XU CN201621354944U CN206226158U CN 206226158 U CN206226158 U CN 206226158U CN 201621354944 U CN201621354944 U CN 201621354944U CN 206226158 U CN206226158 U CN 206226158U
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- permanent
- groove
- end ring
- synchronous motor
- cage bar
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Abstract
The utility model discloses a kind of cooling structure of permanent-magnetic synchronous motor rotor, including end ring, cage bar, permanent magnet and iron core, axial groove is provided with its outer diameter face between adjacent two permanent magnets termination, the cross section of the groove is arc or triangle, the distance between the bottom surface of the bottom land of the groove and the end ring and the bottom surface of the cage bar are respectively greater than 1/3rd of the end ring body and cage bar body, and the utility model has the advantages that permanent magnet does not demagnetize under frequent starting and overlond running compared with the prior art.
Description
Technical field
The utility model is related to cooling technology, particularly a kind of cooling structure of permanent-magnetic synchronous motor rotor.
Background technology
Permagnetic synchronous motor has the excellent properties of energy-conservation, and one-level efficiency product is classified as by country, is that state key is promoted
Product, but the permanent magnet in permagnetic synchronous motor is demagnetized under the high temperature conditions, and existing permagnetic synchronous motor is frequently being opened
When dynamic or overburden runs, motor temperature is raised, and can cause permanent magnet to demagnetize.
The content of the invention
The utility model purpose is to provide a kind of a kind of permanent-magnet synchronous with frequent starting and motor overload runnability
The cooling structure of rotor.
The technical solution of the utility model is, a kind of cooling structure of permanent-magnetic synchronous motor rotor, including end ring, cage bar,
Permanent magnet and iron core, it is characterised in that：Axial groove, institute are provided with its outer diameter face between adjacent two permanent magnets termination
The cross section of groove is stated for arc or triangle, the bottom surface of the bottom land of the groove and the end ring and the bottom surface of the cage bar it
Between distance be respectively greater than 1/3rd of the end ring body and cage bar body.Axial pass trough on its outer diameter face it is transversal
Face is shaped as triangle, and a face of the triangle is perpendicular with rotor direction of rotation.
The utility model has the advantages that permanent magnet does not demagnetize under frequent starting and overlond running compared with the prior art.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
In order to overcome above-mentioned existing permagnetic synchronous motor to be unable to the defect of frequent starting and overlond running, the utility model is adopted
With technical scheme as shown in Figure 1, the permanent magnet 3 that the utility model is located in the iron core 2 between cage bar 4 and motor shaft 1 is four
Individual identical with the series of motor, the shape of cross section of above-mentioned permanent magnet is bar shaped, arc or V-shaped, on the outer peripheral face of iron core
Axial groove 5 is provided with, the bottom land of the groove is relative with the core portion between adjacent permanent magnet termination, the horizontal stroke of the groove
Section is arc or triangle, and the preferably angle of the direction of rotation in triangle a face and motor is described equal to 90 degree
The bottom land of groove is higher than the bottom surface of two ends of rotor ring, i.e. the groove can not cut off end ring, and cage bar can cut off a part, but
Can not cut off.
Chilling temperature principle of the present utility model is, vertical with direction of rotation in face of rotor in groove when motor rotates
Outer air produces agitation, rotates air, rotor is dried and is lowered the temperature.
Claims (2)
1. a kind of cooling structure of permanent-magnetic synchronous motor rotor, including end ring, cage bar, permanent magnet and iron core, it is characterised in that：
Its outer diameter face between adjacent two permanent magnets termination is provided with axial groove, and the cross section of the groove is arc or triangle
Shape, the distance between the bottom surface of the bottom land of the groove and the end ring and the bottom surface of the cage bar are respectively greater than the end ring body
With 1/3rd of cage bar body.
2. a kind of cooling structure of permanent-magnetic synchronous motor rotor as claimed in claim 1, it is characterised in that：Its outer diameter
The shape of cross section of the axial pass trough on face is triangle, and a face of the triangle is perpendicular with rotor direction of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354944.XU CN206226158U (en) | 2016-12-12 | 2016-12-12 | A kind of cooling structure of permanent-magnetic synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354944.XU CN206226158U (en) | 2016-12-12 | 2016-12-12 | A kind of cooling structure of permanent-magnetic synchronous motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226158U true CN206226158U (en) | 2017-06-06 |
Family
ID=58784861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621354944.XU Active CN206226158U (en) | 2016-12-12 | 2016-12-12 | A kind of cooling structure of permanent-magnetic synchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN107346921A (en) * | 2017-09-15 | 2017-11-14 | 青岛理工大学 | P-m rotor and asynchronous starting permanent magnet synchronous motor with high anti-demagnetization capability |
-
2016
- 2016-12-12 CN CN201621354944.XU patent/CN206226158U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317417A (en) * | 2017-08-29 | 2017-11-03 | 中车株洲电机有限公司 | A kind of magneto and its rotor core |
| CN107346921A (en) * | 2017-09-15 | 2017-11-14 | 青岛理工大学 | P-m rotor and asynchronous starting permanent magnet synchronous motor with high anti-demagnetization capability |
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