CN202772688U - Novel permanent magnet motor rotor structure - Google Patents
Novel permanent magnet motor rotor structure Download PDFInfo
- Publication number
- CN202772688U CN202772688U CN 201220315020 CN201220315020U CN202772688U CN 202772688 U CN202772688 U CN 202772688U CN 201220315020 CN201220315020 CN 201220315020 CN 201220315020 U CN201220315020 U CN 201220315020U CN 202772688 U CN202772688 U CN 202772688U
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- Prior art keywords
- permanent magnet
- motor rotor
- magnet
- motor
- rotor
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- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a novel permanent magnet motor rotor structure, comprising a motor rotor, and the motor rotor is distributed with even number magnet grooves. Each magnet groove is provided with a permanent magnet inside. Two ends of the magnet groove are respectively provided with a magnetic isolating air gap. Between two adjacent magnetic isolating air gaps, a magnetic isolating bridge is disposed to separate. The structure makes a permanent magnet closer to an outer contour of the motor rotor, so that thickness of the permanent magnet is reduced, permanent magnet material consumption is reduced, and production cost of the motor is reduced.
Description
Technical field
The utility model relates to the Compressor Technology field, specifically a kind of novel permanent magnet motor rotor structure.
Background technology
The common air-conditioning compressor drives the pump housing by motor, and compression refrigeration gas reaches the purpose of refrigeration.During machine operation, not only need certain starting and operation torque, but also torque ripple and the efficient of motor has been proposed very high requirement, so that air conditioner compressed function satisfies is high-effect, low-cost, the work requirements of low noise.
At present, compressor of air conditioner generally adopts the permagnetic synchronous motor of embedded permanent magnet, and its technique is simple, be easy to produce, and operational efficiency is than the high 5%-8% of induction machine, and is higher by about 3% than line-start permanent magnetic synchronous motor.For permagnetic synchronous motor, permanent magnet is the principal element that determines the motor manufacturing cost.Yet, along with skyrocketing of rare-earth permanent magnet price, adopt the compressor finished product price competition of permagnetic synchronous motor to be growing more intense, exigence reduces the manufacturing cost of compressor.
Yet for making the efficiency optimization of magneto, motor need to have good in magnetic measure and good mechanical strength, cooperates by rational pole embrace, makes the unloaded back electromotive force of motor be tending towards desirable sine wave or trapezoidal wave, and cogging torque reduces.And, in the prior art employed permagnetic synchronous motor not only back emf waveform be difficult to sineization or trapezoidalization; Torque pulsation is large; And used permanent magnetic material is many, directly causes the manufacturing cost of motor high.
The utility model content
For above the deficiencies in the prior art and defective, the purpose of this utility model is to provide a kind of novel permanent magnet motor rotor structure.
The purpose of this utility model is achieved by the following technical solution:
A kind of novel permanent magnet motor rotor structure, comprise rotor, be distributed with even number magnet groove on this rotor, be provided with a permanent magnet in each magnet groove, the two ends of described magnet groove are respectively equipped with every magnetic air gap, are provided with every between magnetic air gap every magnetic bridge at adjacent two and separate.
As optimal technical scheme of the present utility model, described recessed to rotor inside every magnetic air gap.
As optimal technical scheme of the present utility model, described width every magnetic bridge is 0.4-1.5mm.
Compared with prior art, by separating every magnetic air gap and every magnetic bridge, make the back emf waveform of motor be tending towards idealized sine wave or trapezoidal wave between the permanent magnet in the utility model, reduce the torque pulsation of motor, improve the operating efficiency of motor, reduce the operating noise of motor; Simultaneously, this kind structure makes permanent magnet more near the rotor outline, attenuate permanent magnet, the consumption of minimizing motor permanent magnetic material, the production cost of reduction motor.
Description of drawings
Fig. 1 is the structural representation of the utility model the first embodiment.
Fig. 2 is the structural representation of the utility model the second embodiment.
Fig. 3 is the structural representation of the utility model the 3rd embodiment.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
See also Fig. 1, be the structural representation of the utility model the first embodiment.
The outline of rotor 101 is standard round, be uniformly distributed with four magnet grooves 102 at rotor 101, be provided with a permanent magnet (not shown) in each magnet groove 102, the two ends of magnet groove 102 are respectively equipped with every magnetic air gap 103, should be inner recessed to rotor 101 every magnetic air gap 103; Two bar magnet grooves 102 are adjacent two to be provided with width every 103 of magnetic air gaps be separating every magnetic bridge 104 of 0.4mm.
See also Fig. 2, be the structural representation of the utility model the second embodiment.
The outline of rotor 101 is standard round, is uniformly distributed with four magnet grooves 102 at rotor 101, be provided with a permanent magnet (not shown) in each magnet groove 102, and the pole shoe of each magnet groove 102 1 side is provided with adjustable magnetic hole 105; The two ends of magnet groove 102 are respectively equipped with every magnetic air gap 103, should be inner recessed to rotor 101 every magnetic air gap 103; Two bar magnet grooves 102 are adjacent two to be provided with width every 103 of magnetic air gaps be separating every magnetic bridge 104 of 0.8mm.
See also Fig. 3, be the structural representation of the utility model the 3rd embodiment.
The outline of rotor 101 is nonstandard director circle, is alternately connected to form by the circular arc of eight sections two kinds of different-diameters; Be uniformly distributed with four magnet grooves 102 at rotor 101, be provided with a permanent magnet (not shown) in each magnet groove 102; The two ends of magnet groove 102 are respectively equipped with every magnetic air gap 103, should be inner recessed to rotor 101 every magnetic air gap 103; Two bar magnet grooves 102 are adjacent two to be provided with width every 103 of magnetic air gaps be separating every magnetic bridge 104 of 1.5mm.
The above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model; Every equivalence of doing according to the utility model changes and revises, and is all covered by the scope of the utility model claims.
Claims (3)
1. novel permanent magnet motor rotor structure, comprise rotor, be distributed with even number magnet groove on this rotor, be provided with a permanent magnet in each magnet groove, it is characterized in that: the two ends of described magnet groove are respectively equipped with every magnetic air gap, are provided with every between magnetic air gap every magnetic bridge at adjacent two and separate.
2. according to right 1 described a kind of novel permanent magnet motor rotor structure, it is characterized in that: described recessed to rotor inside every magnetic air gap.
3. according to right 1 described a kind of novel permanent magnet motor rotor structure, it is characterized in that: described width every magnetic bridge is 0.4-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315020 CN202772688U (en) | 2012-06-29 | 2012-06-29 | Novel permanent magnet motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315020 CN202772688U (en) | 2012-06-29 | 2012-06-29 | Novel permanent magnet motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772688U true CN202772688U (en) | 2013-03-06 |
Family
ID=47779230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315020 Expired - Fee Related CN202772688U (en) | 2012-06-29 | 2012-06-29 | Novel permanent magnet motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429410A (en) * | 2014-09-19 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet synchronous motor |
-
2012
- 2012-06-29 CN CN 201220315020 patent/CN202772688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429410A (en) * | 2014-09-19 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet synchronous motor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20210629 |