CN202178626U - Rotor magnetic steel for permanent magnet synchronous motor - Google Patents
Rotor magnetic steel for permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN202178626U CN202178626U CN2011202773928U CN201120277392U CN202178626U CN 202178626 U CN202178626 U CN 202178626U CN 2011202773928 U CN2011202773928 U CN 2011202773928U CN 201120277392 U CN201120277392 U CN 201120277392U CN 202178626 U CN202178626 U CN 202178626U
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- CN
- China
- Prior art keywords
- rotor magnetic
- magnetic steel
- rotor
- permanent magnet
- magnet synchronous
- 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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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to rotor magnetic steel for a permanent magnet synchronous motor. Rotor magnetic steels are packaged in a packet plastic rotor in a plastic mode and are distributed on a rotor magnetic yoke at equal intervals. The inner surface and the outer surface of the rotor magnetic steels are both circular faces. The center of a circle of the inner surface of the rotor magnetic steels is close to the outer surface of the rotor magnetic steel, and the center of a circle of the outer surface of the rotor magnetic steel is close to the inner surface of the rotor magnetic steel. With the adoption of the technical schemes for the rotor magnet steel, a standard sine wave magnetic field can be formed at one side of the rotor magnetic steels close to a stator iron core, the motor is more stable in the operation process, the electromagnetic noise is lower, effective torque of the motor can be increased, and unnecessary loss can be reduced. The rotor magnetic steel for the permanent magnet synchronous motor has the characteristics of reasonable and simple structure, flexible operation, easy manufacturing, low noise and little vibration.
Description
Technical field
The utility model relates to a kind of rotor magnetic steel, particularly a kind of rotor magnetic steel that is used for permanent magnet synchronous motor.
Background technology
At present; The permanent magnet synchronous motor of the external rotor class that commercially available washing machine is used comprises rotor and stator, is provided with the gap between stator and the rotor, after the winding energising of stator; Stator and gap between rotor can produce rotating magnetic field; This rotating magnetic field should be the sine wave magnetic field of standard, otherwise the noise and vibration of motor will increase.
Because traditional rotor magnetic steel adopts block magnetic shoe, be the plane near the surface of stator core one side; Rotor also has and adopts watt shape, and the center of circle of two arc surfaces of rotor is in the same side or even concentric circles.The rotor magnetic steel of these two kinds of structures can produce electromagnetic noise and unnecessary vibration when motor rotation.Sometimes be this situation of improvement, and the shape of stator core is done special processing, but the result is not ideal enough, often can not eliminate electromagnetic noise effectively, can not reduce motor oscillating again.
The utility model content
The rotor magnetic steel that is used for permanent magnet synchronous motor that the purpose of the utility model aims to provide a kind of simple and reasonable, flexible operation, be easy to make, noise is low, vibration is little is to overcome weak point of the prior art.
By a kind of rotor magnetic steel that is used for permanent magnet synchronous motor of this purpose design, its architectural feature is that the rotor magnetic steel plastic packaging is in plastic rotor and rotor magnetic steel is equally spaced is distributed on the rotor yoke.
The inner surface and the outer surface of said rotor magnetic steel are arc surface.
The center of circle of the inner surface of said rotor magnetic steel is near the outer surface of rotor magnetic steel; The center of circle of the outer surface of rotor magnetic steel is near the inner surface of rotor magnetic steel.
After rotor magnetic steel in the utility model adopts above-mentioned technical scheme; Can form the sine wave magnetic field of standard at rotor magnetic steel near a side of stator core; Not only can make motor more steady in operation process; Electromagnetic noise is lower, and the motor effective torque is increased, and reduces unnecessary loss.
The characteristics that the utlity model has structure advantages of simple, flexible operation, be easy to make, noise are low, vibration is little.
Description of drawings
Fig. 1 is the utility model first example structure sketch map.
Fig. 2 is the structure for amplifying sketch map of rotor magnetic steel.
Fig. 3 is the second example structure sketch map.
Among the figure: 1 is plastic rotor, and 2 is rotor magnetic steel, and 2.1 is outer surface, and 2.2 is inner surface, and 3 is stator core, and 4 is rotor yoke.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 1-Fig. 2, originally be used for the rotor magnetic steel of permanent magnet synchronous motor, rotor magnetic steel 2 plastic packagings are in plastic rotor 1 and rotor magnetic steel 2 equally spaced being distributed on the rotor yoke 4.
The inner surface 2.2 and the outer surface 2.1 of rotor magnetic steel 2 are arc surface.The center of circle of the inner surface 2.2 of rotor magnetic steel 2 is near the outer surface 2.1 of rotor magnetic steel 2; The center of circle of the outer surface 2.1 of rotor magnetic steel 2 is near the inner surface 2.2 of rotor magnetic steel 2.That is to say that R1 is the radius of the outer surface 2.1 of rotor magnetic steel 2, the center of circle of this outer surface 2.1 is in the side near the inner surface 2.2 of rotor magnetic steel 2.R2 is the radius of the inner surface 2.2 of rotor magnetic steel 2, and the center of circle of this inner surface 2.2 is in the side near the outer surface 2.1 of rotor magnetic steel 2.
In the present embodiment, rotor magnetic steel is 12, and stator core has 18 teeth, and rotor yoke is through plastic processing.12 rotor magnetic steels can reduce motor oscillating in the sine wave magnetic field that can form six standards near a side of stator core, reduce motor noise, improve the motor effective torque.
Rotor magnetic steel in the present embodiment can be used for the permanent magnet synchronous motor of washing machine.
Second embodiment
Referring to Fig. 2-Fig. 3, in the present embodiment, rotor magnetic steel is 24, and stator core has 36 teeth, and rotor yoke is through plastic processing.24 rotor magnetic steels can reduce motor oscillating in the sine wave magnetic field that can form 12 standards near a side of stator core, reduce motor noise, improve the motor effective torque.
All the other are not stated part and see first embodiment, no longer repeat.
Claims (3)
1. rotor magnetic steel that is used for permanent magnet synchronous motor is characterized in that rotor magnetic steel (2) plastic packaging is in plastic rotor (1) and rotor magnetic steel (2) is equally spaced is distributed on the rotor yoke (4).
2. the rotor magnetic steel that is used for permanent magnet synchronous motor according to claim 1 is characterized in that the outer surface (2.1) of said rotor magnetic steel (2) and inner surface (2.2) are arc surface.
3. the rotor magnetic steel that is used for permanent magnet synchronous motor according to claim 2, the center of circle of inner surface (2.2) that it is characterized in that said rotor magnetic steel (2) is near the outer surface (2.1) of rotor magnetic steel (2); The center of circle of the outer surface (2.1) of rotor magnetic steel (2) is near the inner surface (2.2) of rotor magnetic steel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202773928U CN202178626U (en) | 2011-08-02 | 2011-08-02 | Rotor magnetic steel for permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202773928U CN202178626U (en) | 2011-08-02 | 2011-08-02 | Rotor magnetic steel for permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178626U true CN202178626U (en) | 2012-03-28 |
Family
ID=45868490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202773928U Expired - Lifetime CN202178626U (en) | 2011-08-02 | 2011-08-02 | Rotor magnetic steel for permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202178626U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684340A (en) * | 2012-05-23 | 2012-09-19 | 佛山市威灵洗涤电机制造有限公司 | Permanent-magnet rotor with embedded magnetic steels |
| CN102820720A (en) * | 2012-08-14 | 2012-12-12 | 常州至精精机有限公司 | Motor rotor and assembly method thereof |
| CN105553196A (en) * | 2015-12-24 | 2016-05-04 | 赖家顺 | Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets |
-
2011
- 2011-08-02 CN CN2011202773928U patent/CN202178626U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684340A (en) * | 2012-05-23 | 2012-09-19 | 佛山市威灵洗涤电机制造有限公司 | Permanent-magnet rotor with embedded magnetic steels |
| CN102820720A (en) * | 2012-08-14 | 2012-12-12 | 常州至精精机有限公司 | Motor rotor and assembly method thereof |
| CN102820720B (en) * | 2012-08-14 | 2015-06-10 | 常州至精精机有限公司 | Motor rotor and assembly method thereof |
| CN105553196A (en) * | 2015-12-24 | 2016-05-04 | 赖家顺 | Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets |
| CN105553196B (en) * | 2015-12-24 | 2018-04-06 | 赖家顺 | The method that the air-gap field convergence sinusoidal waveform of outer rotor is realized with multi-disc permanent magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |