CN202353346U - Motor rotor structure, permanent magnet synchronous motor and inverter compressor - Google Patents
Motor rotor structure, permanent magnet synchronous motor and inverter compressor Download PDFInfo
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- CN202353346U CN202353346U CN 201120274219 CN201120274219U CN202353346U CN 202353346 U CN202353346 U CN 202353346U CN 201120274219 CN201120274219 CN 201120274219 CN 201120274219 U CN201120274219 U CN 201120274219U CN 202353346 U CN202353346 U CN 202353346U
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Abstract
The utility model provides a motor rotor structure, which is provided with a magnetic steel slot hole. A magnetic isolation hole is arranged on the outer side of the magnetic steel slot hole and can influence magnetic fields to enable the magnetic fields to be distributed according to a certain rule, and magnetic paths are optimized, therefore higher harmonics such as fifth harmonic and seventh harmonic are reduced effectively, and counter potential waveform is sine. The utility model further provides a permanent magnet synchronous motor and an inverter compressor, and rotors of the permanent magnet synchronous motor and the inverter compressor adopt the motor rotor structure. By arranging appropriate magnetic isolation hole, the higher harmonics can be reduced effectively, and the magnetic paths are optimized. Therefore, the counter potential waveform is sine, motor efficiency is improved effectively, and noise is reduced.
Description
[technical field]
The utility model relates to the frequency-changeable compressor field, refers in particular to the permagnetic synchronous motor and the rotor structure thereof of frequency-changeable compressor.
[background technology]
The frequency-changeable compressor motor of exploitation is internal permanent magnet synchronous motor in the industry at present, and its rotor punching structure all has very big influence to motor performance and compressor noise etc., and existing rotor structure is as shown in Figure 1; Its counter potential waveform sineization is not enough, and higher harmonic content is higher, particularly 5 subharmonic and 7 subharmonic; As shown in Figure 2; 5 subharmonic amplitudes reach 18.4V among the figure, have a strong impact on the permagnetic synchronous motor performance, make permagnetic synchronous motor efficient lower; Cost increases, and uses the compressor noise of present this kind permagnetic synchronous motor bigger.
Therefore, the motor rotor construction and the little permagnetic synchronous motor of the good noise of performance that provide a kind of magnetic circuit to optimize are necessity in fact.
[summary of the invention]
The purpose of the utility model is to provide a kind of motor rotor construction of magnetic circuit optimization.
A purpose again of the utility model is to provide the good noise of a kind of performance little permagnetic synchronous motor.
Another purpose of the utility model is to provide the good noise of a kind of performance little frequency-changeable compressor.
For realizing the utility model purpose, following technical scheme is provided:
The utility model provides a kind of motor rotor construction, and it is provided with the magnet steel slotted eye, is provided with in said magnet steel slotted eye outside portion at a distance from the magnetic hole.Should can influence magnetic field at a distance from the magnetic hole it is distributed according to certain rules, optimizes magnetic circuits, thus effectively reduce high order harmonic component, like 5 subharmonic and 7 subharmonic, make more sineization of counter potential waveform.
Preferably, this at a distance from magnetic pore geometry center line and pole center line angle theta satisfied concern 180 °/(np)-2 °≤θ≤180 °/(np)+2 °, wherein n is a nth harmonic, p is a number of pole-pairs.As preferred embodiment, this is θ=180 °/(np)=180 °/(5*3)=12 ° at a distance from magnetic pore geometry center line and pole center line angle theta.
Preferably, said separated magnetic hole is along pole center line symmetric arrangement.
But as execution mode, said can be that Long Circle is oval or trapezoidal at a distance from the magnetic hole shape.Has certain width H at a distance from the magnetic hole.Preferably, this width H at a distance from the magnetic hole satisfies 1.0mm≤H≤2.5mm, wherein Width and its geometric center line parallel.
Preferably, this rotor is the built-in type permanent-magnet structure, and the magnet steel that this rotor adopted is a NdFeB material.
The utility model also provides a kind of permagnetic synchronous motor, and its rotor adopts aforesaid motor rotor construction.As preferred embodiment, motor adopts 9 grooves, 6 electrode structures.The motor rotor construction that this permagnetic synchronous motor adopted distributes it through influencing magnetic field at a distance from the magnetic hole according to certain rules, optimizes magnetic circuits, thus effectively reduce high order harmonic component; Make more sineization of counter potential waveform; Effectively improve motor performance, reduce cost, and reduce noise.
The utility model also provides a kind of frequency-changeable compressor, and it adopts internal permanent magnet synchronous motor, and this internal permanent magnet synchronous motor adopts aforesaid motor rotor construction, can effectively improve performance, reduces cost, and reduces noise, improves competitiveness of product.
The contrast prior art the utlity model has following advantage:
The utility model can effectively reduce high order harmonic component through suitable separated magnetic hole is set, and mainly is 5 times and 7 subharmonic, optimizes magnetic circuits, thus make more sineization of counter potential waveform, effectively improve electric efficiency and reduce noise.The utility model is conceived to improve the compressor permanent magnet synchronous electric motor performance, reduces compressor noise, solves the main bottleneck problem that the motor exploitation runs into; Improving performance can further reduce cost, and improves product competitiveness.
[description of drawings]
Fig. 1 is the structural representation of existing rotor;
Fig. 2 is the 5 subwave content diagram of existing rotor;
Fig. 3 is the sketch map of the utility model rotor embodiment one;
Fig. 4 is the sketch map of the utility model rotor embodiment two;
Fig. 5 is the sketch map of the utility model permagnetic synchronous motor;
Fig. 6 is the 5 subwave content diagram of the utility model rotor.
[embodiment]
See also Fig. 3, the utility model motor rotor construction is the built-in type permanent-magnet structure, is provided with in magnet steel slotted eye 1 outside portion of rotor 10 at a distance from magnetic hole 21.
Should satisfy relation at a distance from magnetic pore geometry center line and pole center line angle theta:
180 °/(np)-2 °≤θ≤180 °/(np)+2 °, wherein n is a nth harmonic, p is a number of pole-pairs.
In the present embodiment, this is θ=180 °/(np)=180 °/(5*3)=12 ° at a distance from magnetic pore geometry center line and pole center line angle theta.
Said separated magnetic hole is along pole center line symmetric arrangement.In the present embodiment, be divided into and be furnished with 12 at a distance from the magnetic holes.
Embodiment illustrated in fig. 3 a kind of, said is Long Circle at a distance from magnetic hole 2, has certain width H at a distance from the magnetic hole, and this width H at a distance from the magnetic hole satisfies 1.0mm≤H≤2.5mm, wherein Width and its geometric center line parallel.
Said separated magnetic hole 2 shapes also can be oval or trapezoidal, embodiment two as shown in Figure 4, and said separated magnetic hole 22 is shaped as trapezoidal.
Should can influence magnetic field at a distance from the magnetic hole it is distributed according to certain rules, optimizes magnetic circuits, thus effectively reduce high order harmonic component, like 5 subharmonic and 7 subharmonic, make more sineization of counter potential waveform, as shown in Figure 6,5 subharmonic amplitudes are 8.5V among the figure, effectively improve performance.
See also Fig. 5, the utility model permagnetic synchronous motor 20 adopts 9 grooves, 6 electrode structures, and its rotor 10 is provided with in magnet steel slotted eye 1 outside portion at a distance from magnetic hole 22.The magnet steel that this rotor adopted is a NdFeB material.The utility model also provides a kind of frequency-changeable compressor, and it adopts internal permanent magnet synchronous motor, and this internal permanent magnet synchronous motor adopts aforesaid motor rotor construction.
The above is merely the preferred embodiment of the utility model, and the protection range of the utility model is not limited thereto, and anyly all belongs within the utility model protection range based on the equivalent transformation on the utility model technical scheme.
Claims (10)
1. motor rotor construction, it is provided with the magnet steel slotted eye, it is characterized in that, is provided with in said magnet steel slotted eye outside portion at a distance from the magnetic hole.
2. motor rotor construction as claimed in claim 1 is characterized in that, this at a distance from magnetic pore geometry center line and pole center line angle theta satisfied concern 180 °/(np)-2 °≤θ≤180 °/(np)+2 °, wherein n is a nth harmonic, p is a number of pole-pairs.
3. motor rotor construction as claimed in claim 2 is characterized in that, this is 12 ° at a distance from magnetic pore geometry center line and pole center line angle theta.
4. according to claim 1 or claim 2 motor rotor construction is characterized in that, this width H at a distance from the magnetic hole satisfies 1.0mm≤H≤2.5mm, wherein Width and its geometric center line parallel.
5. motor rotor construction as claimed in claim 1 is characterized in that, said separated magnetic hole is along pole center line symmetric arrangement.
6. motor rotor construction as claimed in claim 1 is characterized in that, said is that Long Circle is oval or trapezoidal at a distance from the magnetic hole shape.
7. motor rotor construction as claimed in claim 1 is characterized in that the magnet steel that this rotor adopted is a NdFeB material.
8. a permagnetic synchronous motor is characterized in that, its rotor adopts like each described motor rotor construction of claim 1 ~ 7.
9. permagnetic synchronous motor as claimed in claim 8 is characterized in that, motor adopts 9 grooves, 6 electrode structures.
10. frequency-changeable compressor, it adopts internal permanent magnet synchronous motor, it is characterized in that, and this internal permanent magnet synchronous motor adopts like each described motor rotor construction of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120274219 CN202353346U (en) | 2011-08-01 | 2011-08-01 | Motor rotor structure, permanent magnet synchronous motor and inverter compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120274219 CN202353346U (en) | 2011-08-01 | 2011-08-01 | Motor rotor structure, permanent magnet synchronous motor and inverter compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353346U true CN202353346U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120274219 Expired - Lifetime CN202353346U (en) | 2011-08-01 | 2011-08-01 | Motor rotor structure, permanent magnet synchronous motor and inverter compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353346U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916544A (en) * | 2011-08-01 | 2013-02-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor structure, permanent-magnet synchronous motor and variable-frequency compressor |
| CN103633805A (en) * | 2013-05-24 | 2014-03-12 | 西安庆安制冷设备股份有限公司 | Brushless DC motor used for small rotor type refrigeration compressor |
| CN106300739A (en) * | 2016-10-28 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor, rotor and rotor punching |
| CN106655681A (en) * | 2015-10-29 | 2017-05-10 | 富士通将军股份有限公司 | Rotor and permanent magnet electric motor |
| CN107112828A (en) * | 2014-10-01 | 2017-08-29 | 大众汽车有限公司 | Rotor, synchronous motor and hybrid drive |
| KR101791544B1 (en) | 2016-07-07 | 2017-10-30 | 하이윈 마이크로시스템 코포레이션 | Permanent magnet motor |
| CN109962545A (en) * | 2017-12-26 | 2019-07-02 | 上海海立电器有限公司 | Rotor and its compressor |
-
2011
- 2011-08-01 CN CN 201120274219 patent/CN202353346U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916544A (en) * | 2011-08-01 | 2013-02-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor structure, permanent-magnet synchronous motor and variable-frequency compressor |
| CN102916544B (en) * | 2011-08-01 | 2015-06-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor structure, permanent-magnet synchronous motor and variable-frequency compressor |
| CN103633805A (en) * | 2013-05-24 | 2014-03-12 | 西安庆安制冷设备股份有限公司 | Brushless DC motor used for small rotor type refrigeration compressor |
| CN107112828A (en) * | 2014-10-01 | 2017-08-29 | 大众汽车有限公司 | Rotor, synchronous motor and hybrid drive |
| CN106655681A (en) * | 2015-10-29 | 2017-05-10 | 富士通将军股份有限公司 | Rotor and permanent magnet electric motor |
| US11171525B2 (en) | 2015-10-29 | 2021-11-09 | Fujitsu General Limited | Rotor and permanent magnet electric motor |
| CN113783329A (en) * | 2015-10-29 | 2021-12-10 | 富士通将军股份有限公司 | Rotor |
| KR101791544B1 (en) | 2016-07-07 | 2017-10-30 | 하이윈 마이크로시스템 코포레이션 | Permanent magnet motor |
| CN106300739A (en) * | 2016-10-28 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor, rotor and rotor punching |
| CN109962545A (en) * | 2017-12-26 | 2019-07-02 | 上海海立电器有限公司 | Rotor and its compressor |
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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: 20120725 |