CN201388089Y - Rotating device - Google Patents
Rotating device Download PDFInfo
- Publication number
- CN201388089Y CN201388089Y CN200920149059U CN200920149059U CN201388089Y CN 201388089 Y CN201388089 Y CN 201388089Y CN 200920149059 U CN200920149059 U CN 200920149059U CN 200920149059 U CN200920149059 U CN 200920149059U CN 201388089 Y CN201388089 Y CN 201388089Y
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- Prior art keywords
- rotor
- tumbler
- magnetic pole
- magnetic
- stator
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Abstract
A rotating device comprises a stator and a rotor, wherein the stator comprises an accommodation space; the rotor is rotatablely arranged in the accommodation space, and comprises a plurality of magnetic poles; each magnetic pole comprises a magnetic flux part and two sunk parts; the two sunk parts are positioned on the two sides of the magnetic flux part; the arc length of the magnetic flux part accounts for 70-90 percent of that of the magnetic pole; and the ratio of the minimum distance and the maximum distance between each magnetic pole and the stator is 1:2 to 1:4. Through the design of the two sunk parts of each magnetic pole, the magnetic flux leakage caused when the known rotor magnetic poles face to the stator teeth parts directly is improved, and the running efficiency is favorably improved.
Description
Technical field
The utility model relates to a kind of tumbler, particularly a kind of tumbler that improves the leakage field phenomenon by the field structure design that changes rotor.
Background technology
Motor apparatus has been widely used in people's the life, and for example multiple electrical home appliances, manufacturing machine, computer equipment or the vehicles etc. all can be seen the existence of motor apparatus.Progress and novel permanent magnetic Development of Materials along with science and technology, making utilizes the permanent magnet motor of permanent magnetic material to significantly improve its usefulness, and because permanent magnet motor can be suitable under various states, and have advantages such as efficient height, the saving energy and volume are little, make the use of permanent magnet motor become present trend.
Please refer to Fig. 1, the schematic diagram of the magnetic line of force that it is produced in the running for known permanent magnet motor 100.As shown in Figure 1, rotor 120 is positioned at stator 110 inside, and rotor 120 and 110 of stators leave air gap 130, makes that rotor 120 is free to rotate.Rotor 120 is had a plurality of grooves 124 in vain to separate each magnetic pole 122 at the compass plane near air gap 130 1 sides, and each groove 124 promptly is defined as the Q axle of 122 of two magnetic poles, and makes each magnetic pole 122 present the design of a salient pole type.Thick black line among Fig. 1 is represented the magnetic line of force path of being simulated.In theory, when permanent magnet motor 100 running, the magnetic flux that permanent magnetic material produced can be crossed over air gap 130 and arrive stators 110, and after flowing through stator teeth 112 along ideal path, crosses over air gap 130 again and get back to rotor 120, to reach desirable usefulness; But when rotor 120 rotations make that the Q axle faces stator teeth 112, the part magnetic flux is after crossing over air gap 130 arrival stators 110, the attraction of the magnetic pole 122 that often is close to, thereby cross over air gap 130 at once and get back to rotor 120, seriously, even have magnetic flux can not arrive stator 110, but the situation of directly getting back to rotor 120 via air gap 130.This is so-called leakage field phenomenon, so that magnetic flux is lowered, and causes the usefulness of permanent magnet motor 100 runnings not good.
Therefore, how improving the leakage field phenomenon effectively to improve the rotational efficienty of motor, is a considerable problem.
Summary of the invention
Main purpose of the present utility model is to provide a kind of tumbler that improves the leakage field phenomenon by the field structure design that changes rotor.
For reaching above-mentioned main purpose, the utility model provides a kind of tumbler, and this tumbler comprises stator and rotor, and stator comprises accommodation space, and rotor is arranged in this accommodation space rotationally.Rotor comprises a plurality of magnetic poles, and each magnetic pole comprises magnetic flux portion and two depressed parts, and described two depressed parts are positioned at the both sides of magnetic flux portion.Wherein the arc length of magnetic flux portion account for magnetic pole arc length 70～90%, and the ratio of the minimum range between each magnetic pole and stator and ultimate range is 1: 2～1: 4.
In a preferred embodiment of tumbler of the present utility model, rotor also comprises a plurality of grooves, so that each magnetic pole presents salient pole type design, and stator also comprises a plurality of teeth groove, described a plurality of teeth groove comprises a plurality of grooves and a plurality of tooth portion, makes that the described a plurality of groove and the ratio of the quantity of described a plurality of magnetic poles are 3: 2.
Rotor design by tumbler of the present utility model, obstruction when utilizing two depressed parts of each magnetic pole to increase the magnetic fluxs circulation, make magnetic flux improve, improve the leakage field phenomenon thus, to improve tumbler of the present utility model magnetic flux in the running via the ratio that stator flows back to rotor again.
The beneficial effects of the utility model are that by two depressed part designs of each magnetic pole, formed leakage field phenomenon helps the lifting of running efficiency when improving known rotor magnetic pole over against stator teeth.
Description of drawings
The schematic diagram of the magnetic line of force that Fig. 1 is produced in the running for known permanent magnet motor.
Fig. 2 is the schematic diagram of tumbler of the present utility model.
Fig. 3 is the partial perspective view of the rotor of tumbler of the present utility model.
Fig. 4 is the stator of tumbler of the present utility model and the partial schematic diagram between rotor.
Wherein, description of reference numerals is as follows:
Tumbler 1 stator 10
The groove 14a tooth 14b of portion
The 22a of magnetic flux portion depressed part 22b
Groove 24 magnets 26
Groove 124 air gaps 130
Embodiment
For further understanding technology contents of the present utility model, be described as follows especially exemplified by going out preferred embodiment.
Below please refer to Fig. 2, it is the schematic diagram of tumbler 1 of the present utility model.Tumbler 1 of the present utility model is applied to a motor, and as shown in Figure 2, tumbler 1 of the present utility model comprises stator 10 and rotor 20, and stator 10 comprises accommodation space 12 and a plurality of teeth groove 14, and described a plurality of teeth groove 14 comprise a plurality of groove 14a and a plurality of tooth 14b of portion.Rotor 20 is arranged in the accommodation space 12 of stator 10, and rotor 20 comprises a plurality of magnetic poles 22.10 of rotor 20 and stators keep an air gap 30, make rotor 20 freely to rotate with respect to stator 10.
In a preferred embodiment of the present utility model, rotor 20 also comprises a plurality of grooves 24, and each groove 24 is arranged between each magnetic pole 22, in order to each magnetic pole 22 is separated, makes each magnetic pole 22 present salient pole type design simultaneously.And each groove 24 is defined as the Q axle of 22 of two magnetic poles.Design according to this preferred embodiment, a plurality of groove 14a that tumbler 1 of the present utility model is adopted are 3: 2 with the ratio of the quantity of a plurality of magnetic poles 22, for example 12 grooves, 8 utmost points, 18 grooves, 12 utmost points etc., but groove 14a is adjusted than visual different design with the quantity of magnetic pole 22, do not exceed, and the utility model is not limited to be applied to the pole design of salient pole type equally with this preferred embodiment.
In addition, rotor 20 also comprises a plurality of magnets 26, and each magnet 26 is to make with permanent magnetic material, and is provided with corresponding to each magnetic pole 22.In a preferred embodiment of the present utility model, a plurality of magnets 26 are arranged at the inside of each magnetic pole 22, and promptly rotor 20 adopts the structural design of interior magnet formula, but the utility model is not as limit.
Please refer to Fig. 3, it is the partial schematic diagram of the rotor 20 of tumbler 1 of the present utility model.As shown in Figure 3, each magnetic pole 22 of rotor 20 comprises the 22a of magnetic flux portion and two depressed part 22b, two depressed part 22b handle formed symmetrical structure at magnetic pole 22 both side surface by cutting or other modes, therefore two depressed part 22b are positioned at the both sides of the 22a of magnetic flux portion, and make the arc length of the 22a of magnetic flux portion less than the arc length of magnetic pole 22.Suppose that the arc length of magnetic pole 22 is S2 originally, and the arc length of the 22a of magnetic flux portion is S1, in a preferred embodiment of the present utility model, by the size design of two depressed part 22b, make that the ratio of S2 and S1 is 0.7～0.9, promptly the arc length S 1 of the 22a of magnetic flux portion be magnetic pole 22 arc length S 2 70～90%.
Please refer to Fig. 4, it is the partial schematic diagram of 20 of the stator 10 of tumbler 1 of the present utility model and rotors.As shown in Figure 4, the depressed part 22b of each magnetic pole 22 by rotor 20 design makes 10 of each magnetic pole 22 and stators can form a minimum range and a ultimate range; Wherein minimum range is the distances of stator 10 inner surfaces to magnetic flux portion 22a surface, and ultimate range then is the distances of stator 10 inner surfaces to depressed part 22b surface minimum point.
The minimum range of supposing 10 of each magnetic pole 22 and stators is D1, ultimate range is D2, in a preferred embodiment of the present utility model, by the size design of depressed part 22b, make that D2 is 2～4 times of D1, promptly the minimum range of 10 of magnetic pole 22 and stators is 1: 2～1: 4 with the ratio of ultimate range.By this design, make the distance of 22 of stator 10 and magnetic poles because of the formation of depressed part 22b difference to some extent.
Further designed and tested at depressed part 22b, in the obtained preferred embodiment of the present utility model, find that ratio as S2 and S1 is about 0.8 (be the arc length S 1 of the 22a of the magnetic flux portion arc length S 2 that is about magnetic pole 22 80%), and when D2 is about 3 times (minimum range that is 10 of magnetic pole 22 and stators is about 1: 3 with the ultimate range ratio) of D1, tumbler 1 of the present utility model can be obtained maximum magnetic flux, reaches best running efficiency.
Because air is the non-conductor of magnetic, therefore the design by tumbler 1 of the present utility model, utilize the width of air gap of 20 of each magnetic pole 22 formed two depressed part 22b increase stator 10 and rotors, make that two depressed part 22b will cause obstruction to the circulation of magnetic flux when the Q axle of 22 of two magnetic poles faces the 14b of tooth portion.So make magnetic flux after striding across short-range air gap 30 arrival stators 10, be difficult for directly crossing over air gap 30 once more and get back to rotor 20, improved the ratio of magnetic flux, improve known leakage field phenomenon thus along desirable path planning circulation.
And tumbler 1 of the present utility model is designed at the minimum range of 10 of the arc length ratio of 22a of magnetic flux portion and magnetic pole 22 and magnetic pole 22 and the stators ratio with ultimate range, limit the size of each depressed part 22b of institute's moulding, avoided when magnetic pole 22 is cut the scope deficiency and causes depressed part 22b too small, magnetic flux still can be crossed over air gap 30 nearby directly back and forth from rotor 20, thereby can't reach the situation that desirable leakage field improves effect; And avoided when magnetic pole 22 is cut scope and excessively extensively causes depressed part 22b excessive magnetic flux even can't cross over air gaps 30 from rotor 20, the minus effect that cause magnetic flux to descend on the contrary.
In addition, in a preferred embodiment of the present utility model, each depressed part 22b of each magnetic pole 22 forms a rescinded angle structure after passing through cutting or other mode moulding.According to design or demand difference, each depressed part 22b also can form an arc structure or other can provide the structure of same effect, and the utility model is not as limit.
Thus, the utility model changes with the structural design to rotor 20 a little by carry out the forming processes of depressed part 22b at each magnetic pole 22, can reach to change the leakage field phenomenon, improves tumbler 1 of the present utility model magnetic flux in the running, increases running efficiency.
In sum, no matter the utility model with regard to its purpose, means and effect, shows that all it is totally different in the feature of known technology, has realized technical breakthrough.But be noted that the foregoing description only is illustrative principle of the present utility model and effect thereof, but not be used to limit scope of the present utility model.Those skilled in the art all can be under the situation of know-why of the present utility model and spirit, and embodiment is made an amendment and changes.Therefore, protection range of the present utility model should be as the criterion as appending claims institute restricted portion.
Claims (10)
1. a tumbler is characterized in that, this tumbler comprises:
One stator comprises an accommodation space; And
One rotor is arranged in this accommodation space rotationally, and this rotor comprises:
A plurality of magnetic poles, each described magnetic pole comprise a magnetic flux portion and two depressed parts, described two depressions
Portion is positioned at the both sides of this magnetic flux portion;
Wherein the arc length of this magnetic flux portion be this magnetic pole arc length 70～90%, and the ratio of the minimum range between each described magnetic pole and this stator and ultimate range is 1: 2～1: 4.
2. tumbler as claimed in claim 1 is characterized in that this rotor also comprises a plurality of grooves, and each described groove is arranged between each described magnetic pole, makes each described magnetic pole be salient pole type design.
3. tumbler as claimed in claim 2 is characterized in that this stator also comprises a plurality of teeth groove, and described a plurality of teeth groove comprise a plurality of grooves and a plurality of tooth portion, and described a plurality of grooves are 3: 2 with the ratio of the quantity of described a plurality of magnetic poles.
4. tumbler as claimed in claim 2 is characterized in that, this rotor is an interior magnet formula rotor.
5. tumbler as claimed in claim 1 is characterized in that, each described depressed part is a rescinded angle structure.
6. tumbler as claimed in claim 1 is characterized in that, each described depressed part is an arc structure.
7. a tumbler is characterized in that, this tumbler comprises:
One stator comprises an accommodation space and a plurality of teeth groove, and described a plurality of teeth groove comprise a plurality of grooves and a plurality of tooth portion; And
One rotor is arranged in this accommodation space rotationally, and this rotor comprises:
A plurality of magnetic poles, each described magnetic pole comprise a magnetic flux portion and two depressed parts, and described two depressed parts are positioned at the both sides of this magnetic flux portion, and described a plurality of grooves are 3: 2 with the ratio of the quantity of described a plurality of magnetic poles; And
A plurality of grooves, each described groove are arranged between each described magnetic pole;
The arc length of wherein said magnetic flux portion be described magnetic pole arc length 70～90%, and the ratio of the minimum range between each described magnetic pole and this stator and ultimate range is 1: 2～1: 4.
8. tumbler as claimed in claim 7 is characterized in that, this rotor is an interior magnet formula rotor.
9. tumbler as claimed in claim 7 is characterized in that, each described depressed part is a rescinded angle structure.
10. tumbler as claimed in claim 7 is characterized in that, each described depressed part is an arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920149059U CN201388089Y (en) | 2009-04-14 | 2009-04-14 | Rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920149059U CN201388089Y (en) | 2009-04-14 | 2009-04-14 | Rotating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388089Y true CN201388089Y (en) | 2010-01-20 |
Family
ID=41580633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920149059U Expired - Lifetime CN201388089Y (en) | 2009-04-14 | 2009-04-14 | Rotating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388089Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510149A (en) * | 2011-11-22 | 2012-06-20 | 苏州大学 | Motor rotor |
| CN103701237A (en) * | 2013-12-17 | 2014-04-02 | 山东华力电机集团股份有限公司 | Rotor punching sheet for inner rotor permanent magnet motor |
| CN104143869A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | High-power high-speed permanent magnet motor rotor |
-
2009
- 2009-04-14 CN CN200920149059U patent/CN201388089Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510149A (en) * | 2011-11-22 | 2012-06-20 | 苏州大学 | Motor rotor |
| CN102510149B (en) * | 2011-11-22 | 2015-01-14 | 苏州大学 | Motor rotor |
| CN104143869A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | High-power high-speed permanent magnet motor rotor |
| CN104143869B (en) * | 2013-05-09 | 2016-12-28 | 上海电气集团上海电机厂有限公司 | A kind of Large-power High-Speed permanent magnet machine rotor |
| CN103701237A (en) * | 2013-12-17 | 2014-04-02 | 山东华力电机集团股份有限公司 | Rotor punching sheet for inner rotor permanent magnet 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 |
Granted publication date: 20100120 |
|
| CX01 | Expiry of patent term |