CN201478966U - Permasyn motor - Google Patents
Permasyn motor Download PDFInfo
- Publication number
- CN201478966U CN201478966U CN2009203094471U CN200920309447U CN201478966U CN 201478966 U CN201478966 U CN 201478966U CN 2009203094471 U CN2009203094471 U CN 2009203094471U CN 200920309447 U CN200920309447 U CN 200920309447U CN 201478966 U CN201478966 U CN 201478966U
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- CN
- China
- Prior art keywords
- rotor
- motor
- permanent magnet
- support frame
- bracing strut
- 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.)
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Abstract
The utility model discloses a permasyn motor, which comprises a motor case, a stator and a rotor, wherein the stator is fixed in the motor case, the rotor is connected with the motor case through a bearing, the rotor comprises a rotating shaft, a shaft support frame and a rotor sheet, the shaft support frame is fixed on the rotating shaft, the rotor sheet is sheathed outside the shaft support frame, and a permanent magnet is arranged on the rotor sheet. The utility model is characterized in that a magnet insulation block is arranged between the rotor sheet and the shaft support frame, and the magnet insulation block is fixedly connected on the shaft support frame and is made of non-magnetic materials. The utility model effectively solves the problem of axial magnetic leakage of the permanent-magnet rotor, improves the motor efficiency and the power factor, and simultaneously prolongs the service life of a motor bearing.
Description
Technical field: the utility model relates to a kind of motor, particularly be a kind of improvement invention of permanent magnet synchronous motor.
Background technology: at present, the rotor of permanent magnet synchronous motor generally comprises rotating shaft, bracing strut and rotor punching, and bracing strut is fixed in the rotating shaft, and the rotor punching slices laminate and are socketed in outside the bracing strut, be embedded with permanent magnet on the rotor punching, be used for improving the efficient and the power factor of motor.The closure of permanent magnet magnetic circuit is divided into two parts, and a part forms closed magnetic circuit by rotor self, i.e. the magnetic circuit of leakage field, and another part forms closed magnetic circuit by stator core, and is many more as the magnetic line of force by stator core, just means the utilance height of permanent magnet; Except that above-mentioned two permanent magnet magnetic circuits, (its path: the permanent magnet N utmost point-rotor punching-bracing strut-rotating shaft-motor bearings-motor case-stator core-permanent magnet S utmost point), closed leakage field loop that permanent-magnet synchronous motor rotor still has section axial to form, the permanent magnet waste is not only caused in this axial leakage field loop, and, this part leakage flux is crossed motor bearings, when motor moved, motor bearings roller cutting magnetic line will produce voltage and current, influences the useful life of bearing.
Summary of the invention: in view of the problem of present known technology existence, the technical problems to be solved in the utility model is to be to provide a kind of can effectively solve rotor axial leakage field problem, improve electric efficiency and power factor, prolong the motor bearings permanent magnet synchronous motor in useful life.
For solving the problems of the technologies described above, the utility model takes following technical scheme to finish: a kind of permanent magnet synchronous motor, comprise casing, stator and rotor, stator is fixed in the casing, rotor is connected with casing by bearing, described rotor comprises rotating shaft, bracing strut and rotor punching, bracing strut is fixed in the rotating shaft, rotor punching is socketed in outside the bracing strut, permanent magnet is installed on the rotor punching, it is characterized in that: be provided with exhausted magnetic patch between described rotor punching and the bracing strut, exhausted magnetic patch is fixedly connected on the bracing strut, and exhausted magnetic patch is made by nonmagnetic substance.
The utility model is provided with the exhausted magnetic patch of being made by nonmagnetic substance between rotor punching and bracing strut, be equivalent to cut off the axial leakage field of permanent magnet loop, so just can avoid the loss of axial leakage field, improve the utilization ratio of permanent magnet, thereby improved electric efficiency and power factor; Owing to do not have closed leakage field loop by motor bearings, bearing roller just can not produce voltage and current by cutting magnetic line yet during the motor operation, has prolonged the useful life of bearing simultaneously.
Description of drawings: the utility model has following accompanying drawing:
Fig. 1 is the axial leakage field of a permanent magnet synchronous motor loop schematic diagram
Fig. 2 is the structural representation of the utility model rotor
Embodiment: accompanying drawing has been represented the technical solution of the utility model and embodiment, further describes each relevant details and operation principle thereof of embodiment below more in conjunction with the accompanying drawings.
With reference to accompanying drawing 1, this permanent magnet synchronous motor, comprise casing 2, stator 1 and rotor 3, stator 1 is fixed in the casing 2, rotor 3 flexibly connects by bearing 4 and casing 2, with reference to accompanying drawing 2, described rotor 3 comprises rotating shaft 5, bracing strut 9, exhausted magnetic patch 10 and rotor punching 8, bracing strut 9 is fixed in the rotating shaft 5, bracing strut 9 has three outer supports, described exhausted magnetic patch 10 is provided with three, be installed in respectively on three outer supports of bracing strut 9, projection that exhausted magnetic patch 10 bottom surfaces have and described outer stayed surface have groove and match, so extremely can be more firm after magnetic patch 10 and bracing strut 9 welding, exhausted magnetic patch 10 is made by nonmagnetic substance, one of them exhausted magnetic patch outside is provided with keyway, is provided with feather key 11 in the keyway, and described rotor punching 8 laminates by feather key 11 slices and is socketed on the exhausted magnetic patch 10 and fixedly connected, rotor punching 8 is provided with permanent magnet trough 7, and permanent magnet trough 7 is embedded with permanent magnet.
6 paths of having represented axial leakage field loop among Fig. 1, in conjunction with Fig. 2, the path in the axial leakage field loop of this permanent magnet synchronous motor: the permanent magnet N utmost point-rotor punching-bracing strut-rotating shaft-motor bearings-motor case-stator core-permanent magnet S utmost point, compared with prior art, axial leakage field of the present utility model has increased the exhausted magnetic patch of being made by nonmagnetic substance in the middle of the loop, because the existence of exhausted magnetic patch, in fact this loop is cut off, when motor moves, neither can influence electric efficiency and power factor, also can not influence motor bearings useful life.
Claims (1)
1. permanent magnet synchronous motor, comprise casing (2), stator (1) and rotor (3), stator (1) is fixed in the casing (2), rotor (3) is connected with casing (2) by bearing (4), described rotor (3) comprises rotating shaft (5), bracing strut (9) and rotor punching (8), bracing strut (9) is fixed in the rotating shaft (5), rotor punching (8) is socketed in outside the bracing strut (9), rotor punching is equipped with permanent magnet on (8), it is characterized in that: be provided with exhausted magnetic patch (10) between described rotor punching (8) and the bracing strut (9), exhausted magnetic patch (10) is fixedly connected on the bracing strut (9), and exhausted magnetic patch (10) is made by nonmagnetic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203094471U CN201478966U (en) | 2009-09-02 | 2009-09-02 | Permasyn motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203094471U CN201478966U (en) | 2009-09-02 | 2009-09-02 | Permasyn motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478966U true CN201478966U (en) | 2010-05-19 |
Family
ID=42415220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203094471U Expired - Fee Related CN201478966U (en) | 2009-09-02 | 2009-09-02 | Permasyn motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079143A (en) * | 2016-08-30 | 2016-11-09 | 伊泽瑞尔(大连)科技有限公司 | A kind of permanent magnet direct-driven mill |
-
2009
- 2009-09-02 CN CN2009203094471U patent/CN201478966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079143A (en) * | 2016-08-30 | 2016-11-09 | 伊泽瑞尔(大连)科技有限公司 | A kind of permanent magnet direct-driven mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150902 |
|
| EXPY | Termination of patent right or utility model |