CN101345442A - Rotor of electric motor used for compressor - Google Patents
Rotor of electric motor used for compressor Download PDFInfo
- Publication number
- CN101345442A CN101345442A CNA2007100436415A CN200710043641A CN101345442A CN 101345442 A CN101345442 A CN 101345442A CN A2007100436415 A CNA2007100436415 A CN A2007100436415A CN 200710043641 A CN200710043641 A CN 200710043641A CN 101345442 A CN101345442 A CN 101345442A
- Authority
- CN
- China
- Prior art keywords
- rotor
- magnetic
- air gap
- magnet
- magnetic air
- 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.)
- Granted
Links
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to a rotor of a motor for a compressor. Even number of magnet slots are arranged on the rotor and one permanent magnet is inserted into each magnet slot, which is characterized in that a magnetism isolating gap is arranged between the adjacent magnet slots, a connecting rib divides the isolating gap and each magnet slot, a notch is arranged on the circumference of the rotors between the magnetic poles of adjacent magnetism and a magnetism isolating bridge divides the magnetism isolating gap and the notch.
Description
Technical field
The present invention relates to a kind of permanent magnet machine rotor, in particular for the rotor of the magneto of compressor.
Background technology
Usually magneto is made of the stator of an outside and the rotor of an inside, wherein, is provided with stator slot on stator, embeds winding in stator slot, inserts permanent magnet in rotor.By the magnetic field of feeding electric current generation in fixing stator winding and the magnetic field interaction of rotor permanent magnet generation, make the rotor rotation.
The different permanent magnetic materials that insert in the rotor according to magneto will have the compressor permanent magnet rotor now and be divided into two classes, and a class is used ferrite permanent-magnet materials, and a class is used Nd-Fe-Bo permanent magnet material.
In the rotor that uses ferrite permanent-magnet materials, because the remanent magnetism of ferrite permanent-magnet materials is lower, HCJ is also less, in order to produce certain magnetic flux and to keep enough anti-degaussing abilities, the area and the thickness of permanent magnet are bigger, make that like this use amount of permanent magnetic material is more, the use amount of electromagnetic steel plate is also more.
In the rotor that uses Nd-Fe-Bo permanent magnet material, permanent magnet inserts in the rotor core, though magnetic permeability approaching owing to the magnetic permeability of permanent magnet and air, but because Nd-Fe-Bo permanent magnet material remanent magnetism is higher, HCJ is bigger, the permanent magnetic material thinner thickness that design is used, the ac-dc axis magnetic circuit magnetic resistance of motor is variant but be not very big, and therefore available reluctance torque is also little.
Summary of the invention
The objective of the invention is to increase the magnetic resistance that rotor is handed over the axle magnetic circuit, make and hand over the axle inductance, and make the difference Shanghai Communications University of the two, thereby increase available reluctance torque less than the d-axis inductance.
The invention provides the rotor of a kind of compressor with magneto, this rotor is provided with even number magnet groove, insert a permanent magnet in each magnet groove, it is characterized in that: be provided with one every magnetic air gap between adjacent magnet groove, dowel will separate every magnetic air gap and each magnet groove; On the rotor periphery between the magnetic pole of adjacent magnets, be provided with recess, will separate every magnetic air gap and recess every magnetic bridge.
By new rotor shapes of the present invention, make the friendship axle inductance of compressor electric motor less than the d-axis inductance, can obtain positive reluctance torque, thereby improve the electromagnetic torque that unitary current produces by the Control current phase angle, promptly improve efficiency of motor, increased exerting oneself of motor.
Description of drawings
Below by detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings, feature of the present invention and advantage will be clearer.
Fig. 1 has represented the schematic diagram of electric machine rotor;
Fig. 2 has represented the partial schematic diagram of rotor of the present invention every the magnetic air gap place;
Fig. 3 has represented the partial schematic diagram of rotor of the present invention every magnetic air gap.
Description of reference numerals:
The 5-stator
The 6-stator slot
The 7-permanent magnet
The 8-rotating shaft
The 9-rotor core
10-stator fixing hole
11-rotor rivet hole
The 12-rotor is every magnetic air gap
13-rotor periphery recess
14-is every magnetic bridge
15-magnet groove
The 16-magnetic pole
The 17-dowel
The 21-stator winding
Embodiment
Fig. 1 has represented the schematic diagram of electric machine rotor, and described rotor is made of the stator 5 of an outside and the rotor 9 of an inside.Wherein, in stator 5, be provided with the circumferential equally distributed stator slot 6 in a plurality of edges, in stator slot 6, embed winding 21.Circumferentially equally spaced be provided with even number magnet groove 15 in rotor 9 punching upper edges, insert a permanent magnet 7 in each magnet groove 15, the polarity of adjacent two permanent magnets 7 is opposite.Clearly visible by Fig. 2, between adjacent magnet groove 15, be provided with one every magnetic air gap 12, dowel 17 will separate every magnetic air gap 12 and each magnet groove 15.In addition, on the magnetic pole 16A of adjacent permanent magnet 7 and the rotor periphery between the 16B, be provided with recess 13, connect adjacent magnetic pole 16A and 16B every magnetic bridge 14 between magnetic air gap 12 and recess 13 so that will separate every magnetic air gap 12 and recess 13.Like this, be positioned at rotor every magnetic air gap 12 and hand on the axle magnetic circuit, make and hand over axle magnetic circuit magnetic resistance greater than d-axis magnetic circuit magnetic resistance.Owing to all be positioned on the friendship axle magnetic circuit of rotor every magnetic air gap 12 and groove 13, and the magnetic permeability of air is very little, therefore hand over the magnetic resistance of axle magnetic circuit a lot of greatly than the magnetic resistance of d-axis magnetic circuit, the big more reluctance torque that is produced by the difference of ac-dc axis magnetic resistance of the two difference is also big more.
Figure 3 illustrates the partial schematic diagram of rotor of the present invention every magnetic air gap 12, shown in be polygonal shape every magnetic air gap 12.Wherein, every the ratio of the upper width A of magnetic air gap 12 and lower width B between 0.5～1.2.And upper width A and permanent magnet 7 at the ratio of in the radial direction thickness between 1.5～3.Every magnetic air gap 12 and magnet groove 15 opposed side edges C and permanent magnet 7 at the ratio of in the radial direction thickness between 0.8～2, except shape shown in the figure, can be other shape polygon, as long as function class seemingly is this patent coverage every magnetic air gap 12.
Claims (5)
1. a compressor is with the rotor (9) of magneto, this rotor (9) is provided with even number magnet groove (15), insert a permanent magnet in each magnet groove (15), it is characterized in that: be provided with one every magnetic air gap (12) between adjacent magnet groove (15), dowel (17) will separate every magnetic air gap (12) and each magnet groove (15); (16A, 16B) the rotor periphery between is provided with recess (13), will separate every magnetic air gap (12) and recess (13) every magnetic bridge (14) at the magnetic pole of adjacent magnets.
2. rotor as claimed in claim 1 is characterized in that: every magnetic air gap (12) is polygonal shape.
3. rotor as claimed in claim 1 or 2 is characterized in that: every the ratio of the upper width (A) of magnetic air gap (12) and lower width (B) between 0.5～1.2.
4. rotor as claimed in claim 1 or 2 is characterized in that: every the upper width (A) of magnetic air gap (12) and permanent magnet (7) at the ratio of in the radial direction thickness between 1.5～3.
5. rotor as claimed in claim 1 or 2 is characterized in that: every magnetic air gap (12) and magnet groove (15) opposed side edges (C) and permanent magnet (7) at the ratio of in the radial direction thickness between 0.8～2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100436415A CN101345442B (en) | 2007-07-10 | 2007-07-10 | Rotor of electric motor used for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100436415A CN101345442B (en) | 2007-07-10 | 2007-07-10 | Rotor of electric motor used for compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101345442A true CN101345442A (en) | 2009-01-14 |
| CN101345442B CN101345442B (en) | 2011-06-08 |
Family
ID=40247361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100436415A Expired - Fee Related CN101345442B (en) | 2007-07-10 | 2007-07-10 | Rotor of electric motor used for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101345442B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296803A (en) * | 2012-02-22 | 2013-09-11 | 上海电机系统节能工程技术研究中心有限公司 | Rotor structure of permanent-magnet synchronous motor for spinning frame |
| CN103607061A (en) * | 2013-12-03 | 2014-02-26 | 山东省科学院自动化研究所 | Permanent magnet motor rotor with direct-axis inductance larger than quadrature-axis inductance |
| CN107394919A (en) * | 2017-07-28 | 2017-11-24 | 广东美芝制冷设备有限公司 | Compressor electric motor, inverter compressor and air-conditioning |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497468Y (en) * | 2001-09-26 | 2002-06-26 | 朱明聪 | Built-in permanent-magnet motor rotor |
| CN1238942C (en) * | 2003-06-24 | 2006-01-25 | 哈尔滨工业大学 | Permanent magnetic motor rotor capable of automatically regulating magnetism |
| JP4739726B2 (en) * | 2004-10-28 | 2011-08-03 | 日本電産テクノモータホールディングス株式会社 | Three-phase brushless DC motor for electric tools |
| CN2862478Y (en) * | 2005-10-31 | 2007-01-24 | 上海日立电器有限公司 | Magnetic-iron built-in type permanent magnetic synchro speed regulation motor rotor |
-
2007
- 2007-07-10 CN CN2007100436415A patent/CN101345442B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296803A (en) * | 2012-02-22 | 2013-09-11 | 上海电机系统节能工程技术研究中心有限公司 | Rotor structure of permanent-magnet synchronous motor for spinning frame |
| CN103607061A (en) * | 2013-12-03 | 2014-02-26 | 山东省科学院自动化研究所 | Permanent magnet motor rotor with direct-axis inductance larger than quadrature-axis inductance |
| CN107394919A (en) * | 2017-07-28 | 2017-11-24 | 广东美芝制冷设备有限公司 | Compressor electric motor, inverter compressor and air-conditioning |
| CN107394919B (en) * | 2017-07-28 | 2023-04-07 | 广东美芝制冷设备有限公司 | Compressor motor, inverter compressor and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101345442B (en) | 2011-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9331532B2 (en) | Permanent magnet rotor brushless motor | |
| JP5774081B2 (en) | Rotating electric machine | |
| US8664823B2 (en) | Magnetic barrier for minimizing demagnetization in bi-permanent magnet synchronous machines | |
| US9906083B2 (en) | Rotors with segmented magnet configurations and related dynamoelectric machines and compressors | |
| EP2485370A2 (en) | Permanent magnet electrical machine | |
| CN101330231A (en) | Permanent magnet motor stator and rotor for compressor | |
| US8664822B2 (en) | Bi-permanent magnets in synchronous machines | |
| CN102347656B (en) | Permanent magnet type rotary machine | |
| EP1786085A3 (en) | Permanent magnet rotating electric machine | |
| US20110163618A1 (en) | Rotating Electrical Machine | |
| JP2007043897A (en) | Salient pole electric machine | |
| JP2006223052A (en) | Permanent-magnet motor | |
| CN108432091A (en) | Motor | |
| CN110212724B (en) | Self-starting synchronous reluctance motor and compressor with same | |
| EP1744437B1 (en) | Self magnetizing motor and stator thereof | |
| CN108462268A (en) | The rotor of electric rotating machine | |
| WO2014192683A1 (en) | Rotating electrical machine in which permanent magnet is used | |
| CN110838779B (en) | Mixed excitation wound rotor and mixed excitation wound synchronous motor | |
| CN101345442B (en) | Rotor of electric motor used for compressor | |
| WO2019026932A1 (en) | Magnetism generation device for electric motor, soft magnetic core, and production method for magnet | |
| US9735634B2 (en) | Split pole spoke type PM machine with enclosed magnets | |
| JP2008136352A (en) | Rotor for permanent magnet motor, manufacturing method of same, permanent magnet motor, compressor, and refrigerating cycle | |
| JP2010206884A (en) | Rotor of permanent magnet type motor | |
| JP2023053154A (en) | Rotor and method for manufacturing rotor | |
| JP2007228771A (en) | Permanent magnet type motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20120710 |