CN201515268U - Rotor of permanent magnet synchronous motor - Google Patents
Rotor of permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN201515268U CN201515268U CN2009202368737U CN200920236873U CN201515268U CN 201515268 U CN201515268 U CN 201515268U CN 2009202368737 U CN2009202368737 U CN 2009202368737U CN 200920236873 U CN200920236873 U CN 200920236873U CN 201515268 U CN201515268 U CN 201515268U
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- boss
- rotor
- permanent magnet
- rotor core
- permagnetic synchronous
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a rotor of a permanent magnet synchronous motor. The rotor comprises a rotor core (1) and a plurality of permanent magnets (2), wherein, a plurality of grooves (3) are formed on the rotor core (1) near thereof; the permanent magnets (2) are embedded and mounted in the grooves (3); a plurality of convex lug bosses are formed on the outer edge of the rotor core (1); the grooves (3) are formed on the inner sides of the lug bosses; one lug boss is formed between every two adjacent grooves (3); the radial outward magnetic polarities of the permanent magnets (2) are identical; and the amount of the permanent magnets (2) is one half of that of the lug bosses. The utility model not only reduces the amount of permanent magnets and reduces the structural cost, but also improves a magnetic circuit, so that the distribution of the magnetic circuit is more reasonable, the power consumption is low, and the structural noise is reduced.
Description
Technical field:
The utility model relates to a kind of rotor of permagnetic synchronous motor.
Background technology:
At present, the rotor of most of permagnetic synchronous motors, no matter adopting the surface-mount type permanent magnet still is the built-in permanent magnetic body, putting in order of permanent magnet surfaces polarity all is N-S-N-S......, the quantity of permanent magnet equals number of magnetic poles, and there are the following problems: 1) permanent magnet quantity is more, and infrastructure cost is higher; 2) the magnetic circuit distribution is reasonable inadequately, and structureborne noise is bigger.
Summary of the invention:
The purpose of this utility model provides a kind of rotor of permagnetic synchronous motor, and it has not only reduced the quantity of permanent magnet, has reduced infrastructure cost, and has improved magnetic circuit, and it is more reasonable that magnetic circuit is distributed, and power consumption is little, has reduced structureborne noise.
The purpose of this utility model is achieved by following technical proposals.
A kind of rotor of permagnetic synchronous motor, comprise rotor core and permanent magnet, be provided with several trough at rotor core near the edge, permanent magnet embeds and is installed in the groove the inside, the outer rim of rotor core is provided with several boss that arches upward outward, groove is arranged between inboard and adjacent two grooves of boss boss at interval, and the magnetic polarity of several permanent magnet radial outward all is the same, and the quantity of permanent magnet equals half of quantity of boss.
Above-mentioned described boss comprises small boss and big boss, and small boss and big boss distribute alternately, and groove is arranged on the inboard of small boss, and several permanent magnets all are the same towards the polarity of the small boss of correspondence, and the quantity of permanent magnet equals the quantity of small boss.
The outer edge surface of above-mentioned described small boss and big boss all is an arc surface, the distribution straggly of their arc surface, and the circular arc peak of small boss is littler from the distance in the center of circle of rotor core than the circular arc peak of big boss from the distance in the center of circle of rotor core.
Be provided with the space of circumferential distribution in the both sides of above-mentioned described permanent magnet, the space can fuse with groove, also moulding separately.
Below the inboard of above-mentioned described rotor core, permanent magnet, be provided with the through hole of circumferential distribution.
Below the next door of the centre bore of above-mentioned described rotor core, through hole, be provided with the cavity of a plurality of circumferential distributions, form narrow limit between adjacent two cavities.
The shape of above-mentioned described through hole can be geometries such as triangle, subtriangular or polygon.
The cross sectional shape of above-mentioned described permanent magnet can be rectangle, rhombus, watt shape, polygon such as trapezoidal, fan-shaped.
The utlity model has following effect: 1) outer rim at rotor core is provided with the boss that several arch upward outward, boss in interval between the two adjacent permanent magnets, this boss that is used for separating is equivalent to one " recessive magnet ", thereby has reduced the quantity of permanent magnet, has reduced infrastructure cost; 2) the circular arc peak of small boss is littler from the distance in the center of circle of rotor core than the circular arc peak of big boss from the distance in the center of circle of rotor core, small boss distributes alternately with big boss, forms height space structure straggly, makes the distribution of magnetic circuit more reasonable, power consumption is little, has reduced structureborne noise; 3) both sides of permanent magnet are provided with the space of circumferential distribution, have effectively prevented the generation of leakage field phenomenon; 4) below of permanent magnet is provided with the through hole of circumferential distribution, has improved magnetic circuit greatly; 5) below the next door of the centre bore of rotor core, through hole, be provided with the cavity of a plurality of circumferential distributions, and form narrow limit between adjacent two cavities, effectively alleviated pulsation moment, reduced the product noise.
Description of drawings:
Fig. 1 is a rotor stereogram of the present utility model.
Fig. 2 is the plane structure chart of Fig. 1.
Fig. 3 is the magnetic circuit distribution map that rotor is used.
Fig. 4 is the partial schematic diagram of A-A among Fig. 3.
Embodiment:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment
As Fig. 1, shown in Figure 2, a kind of rotor of permagnetic synchronous motor, comprise rotor core 1 and permanent magnet 2, be provided with several trough 3 at rotor core 1 near the edge, permanent magnet 2 embeds and is installed in groove 3 the insides, the outer rim of rotor core 1 is provided with several boss that arches upward outward, groove 3 is arranged between inboard and adjacent two grooves 3 of boss boss at interval, the magnetic polarity of several permanent magnet 2 radial outward all is the same, promptly can all be the N utmost point or all be the S utmost point that shown in Fig. 2 is the rotor structure that the full N utmost point of permanent magnet 2 is arranged, and the quantity of permanent magnet 2 equals half of quantity of boss, by reducing the quantity of permanent magnet 2, reduced infrastructure cost.
Wherein boss comprises small boss 11 and big boss 22, small boss 11 and big boss 22 distribute alternately, joint at them forms step 12, make small boss 11 and big boss 22 height straggly, groove 3 is arranged on the inboard of small boss 11, several permanent magnets 2 all are the same towards the polarity of the small boss 11 of correspondence, promptly can all be the N utmost point or all be the S utmost point, and the quantity of permanent magnet 2 equals the quantity of small boss 11; The outer edge surface of small boss 11 and big boss 22 all is an arc surface, the distribution straggly of their arc surface, and the circular arc peak of small boss 11 is littler from the distance L 2 in the center of circle of rotor core 1 than the circular arc peak of big boss 22 from the distance L 1 in the center of circle of rotor core 1; Be provided with the space 31 of circumferential distribution in the both sides of permanent magnet 2, space 31 can fuse with groove 3, also moulding separately; Below the inboard of rotor core 1, permanent magnet 2, be provided with the through hole 13 of circumferential distribution; Below the next door of the centre bore 14 of rotor core 1, through hole 13, be provided with the cavity 15 of a plurality of circumferential distributions, form narrow limit 16 between adjacent two cavities 15; The shape of through hole 13 can be geometries such as triangle, subtriangular or polygon; The cross sectional shape of permanent magnet 2 can be rectangle, rhombus, watt shape, polygon such as trapezoidal, fan-shaped.It is the permanent magnet of making raw material that permanent magnet 2 can be selected for use with the rare earth material.
Shown in Fig. 3 is the magnetic circuit distribution map that the utility model rotor is used.In conjunction with Fig. 2, Fig. 3, Fig. 4 as can be known, rotor is an internal rotor, because the circular arc peak of the small boss 11 of its rotor core 1 is littler from the distance L 2 in the center of circle of rotor core 1 than the circular arc peak of big boss 22 from the distance L 1 in the center of circle of rotor core 1, the center of circle of rotor core 1 all is the same from the distance of the stator teeth 4 of periphery, therefore, big boss 22 apart from the minimal air gap g1 of stator teeth 4 less than the minimal air gap g2 of small boss 11 apart from stator teeth 4, minimal air gap g1 is the beeline of big boss 22 apart from stator teeth 4, and minimal air gap g2 is the beeline of small boss 11 apart from stator teeth 4.As everyone knows, the magnetic line of force is to pass through from the place of minimum reluctance, also can be described as from the minimal air gap between stator core and the rotor core and pass through, such design causes big boss 22 to become an implicit expression magnetic pole, magnetic circuit is concentrated and is distributed in the little path on every side of air gap, make the distribution of magnetic circuit more reasonable, power consumption is little, has reduced structureborne noise.
Claims (8)
1. the rotor of a permagnetic synchronous motor, comprise rotor core (1) and permanent magnet (2), be provided with several trough (3) at rotor core (1) near the edge, permanent magnet (2) embeds and is installed in groove (3) the inside, it is characterized in that: the outer rim of rotor core (1) is provided with the boss that several arch upward outward, groove (3) is arranged between inboard and adjacent two grooves (3) of boss boss at interval, the magnetic polarity of several permanent magnets (2) radial outward all is the same, and the quantity of permanent magnet (2) equals half of quantity of boss.
2. the rotor of a kind of permagnetic synchronous motor according to claim 1, it is characterized in that: boss comprises small boss (11) and big boss (22), small boss (11) and big boss (22) distribute alternately, groove (3) is arranged on the inboard of small boss (11), several permanent magnets (2) all are the same towards the polarity of the small boss (11) of correspondence, and the quantity of permanent magnet (2) equals the quantity of small boss (11).
3. the rotor of a kind of permagnetic synchronous motor according to claim 2, it is characterized in that: the outer edge surface of small boss (11) and big boss (22) all is an arc surface, the distribution straggly of their arc surface, the circular arc peak of small boss (11) is littler from the distance L 2 in the center of circle of rotor core (1) than the circular arc peak of big boss (22) from the distance L 1 in the center of circle of rotor core (1).
4. according to the rotor of claim 1 or 2 or 3 described a kind of permagnetic synchronous motors, it is characterized in that: be provided with the space (31) of circumferential distribution in the both sides of permanent magnet (2), space (31) can fuse with groove (3), also moulding separately.
5. according to the rotor of claim 1 or 2 or 3 described a kind of permagnetic synchronous motors, it is characterized in that: be provided with the through hole (13) of circumferential distribution in the inboard of rotor core (1), the below of permanent magnet (2).
6. the rotor of a kind of permagnetic synchronous motor according to claim 5, it is characterized in that: be provided with the cavity (15) of a plurality of circumferential distributions in the next door of the centre bore (14) of rotor core (1), the below of through hole (13), form narrow limit (16) between adjacent two cavities (15).
7. the rotor of a kind of permagnetic synchronous motor according to claim 6 is characterized in that: the shape of through hole (13) can be geometries such as triangle, subtriangular or polygon.
8. the rotor of a kind of permagnetic synchronous motor according to claim 6 is characterized in that: the cross sectional shape of permanent magnet (2) can be rectangle, rhombus, watt shape, polygon such as trapezoidal, fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202368737U CN201515268U (en) | 2009-09-28 | 2009-09-28 | Rotor of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202368737U CN201515268U (en) | 2009-09-28 | 2009-09-28 | Rotor of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201515268U true CN201515268U (en) | 2010-06-23 |
Family
ID=42486679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202368737U Expired - Lifetime CN201515268U (en) | 2009-09-28 | 2009-09-28 | Rotor of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201515268U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790456A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor iron core, motor and assembling method of motor |
| CN104868646A (en) * | 2015-06-10 | 2015-08-26 | 广东美芝制冷设备有限公司 | Rotor lamination and motor with same |
| CN105226860A (en) * | 2015-10-23 | 2016-01-06 | 苏州爱知科技有限公司 | A kind of motor rotor core structure |
| CN107257172A (en) * | 2017-07-31 | 2017-10-17 | 广东威灵电机制造有限公司 | Rotor and motor and compressor with the rotor |
| CN107332376A (en) * | 2017-07-31 | 2017-11-07 | 广东威灵电机制造有限公司 | Rotor and motor and compressor with the rotor |
| CN111082561A (en) * | 2019-12-16 | 2020-04-28 | 珠海格力电器股份有限公司 | Electric motor rotor and alternating-pole electric motor |
-
2009
- 2009-09-28 CN CN2009202368737U patent/CN201515268U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790456A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor iron core, motor and assembling method of motor |
| CN104868646A (en) * | 2015-06-10 | 2015-08-26 | 广东美芝制冷设备有限公司 | Rotor lamination and motor with same |
| CN105226860A (en) * | 2015-10-23 | 2016-01-06 | 苏州爱知科技有限公司 | A kind of motor rotor core structure |
| CN107257172A (en) * | 2017-07-31 | 2017-10-17 | 广东威灵电机制造有限公司 | Rotor and motor and compressor with the rotor |
| CN107332376A (en) * | 2017-07-31 | 2017-11-07 | 广东威灵电机制造有限公司 | Rotor and motor and compressor with the rotor |
| CN107332376B (en) * | 2017-07-31 | 2020-03-31 | 广东威灵电机制造有限公司 | Rotor, motor with rotor and compressor |
| CN111082561A (en) * | 2019-12-16 | 2020-04-28 | 珠海格力电器股份有限公司 | Electric motor rotor and alternating-pole electric motor |
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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: 20100623 |