CN202178686U - Asynchronous squirrel-cage motor and rotor thereof - Google Patents
Asynchronous squirrel-cage motor and rotor thereof Download PDFInfo
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- CN202178686U CN202178686U CN2011203057179U CN201120305717U CN202178686U CN 202178686 U CN202178686 U CN 202178686U CN 2011203057179 U CN2011203057179 U CN 2011203057179U CN 201120305717 U CN201120305717 U CN 201120305717U CN 202178686 U CN202178686 U CN 202178686U
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Abstract
The utility model relates to an asynchronous squirrel-cage motor and a rotor thereof, wherein the motor comprises the rotor, the rotor is a sectional type squirrel-cage rotor comprising at least three segments orderly connected in series, and between any two segments there is provided a permanent magnetism ring. The motor is integrated with the advantages of the three-phase asynchronous machine and the permanent magnetism motor through employing the rotor, and simultaneously has the advantages of being low in cost, simple in structure, reliable in performance, high in efficiency, and saving in energy utilization, and small in current, thereby having a wide market application prospect.
Description
Technical field
The utility model belongs to the threephase asynchronous machine technical field, relates to a kind of asynchronous squirrel cage motor and rotor thereof.
Background technology
Present threephase asynchronous machine simple in structure, reliable, rotor strength is high, cheap, cost is lower.But its shortcoming is also more outstanding; At the bottom of having a power factor, power low (75% ~ 85%) and efficient is low, not energy-conservation, starting current big (be about rated current 4 ~ 7 times); The problem that moment coefficient is little; And slip is arranged, rotating speed is unfixing with frequency relation, needs the exciting curent component to set up main flux.Structurally the threephase asynchronous machine stator is a straight trough, and rotor can be made skewed slot, and motor volume is bigger.
And the permagnetic synchronous motor power factor is high, and efficient is high, energy-conservation, moment coefficient is big, electric current is little, no slip, and rotating speed and frequency relation relative fixed, built-in magnet steel of rotor or surface are pasted magnet steel and need not current excitation, set up main flux by permanent magnet.Its shortcoming is: complex structure, cost is high, can not directly start.Permagnetic synchronous motor makes rotor chute be difficult to because of being bumped into permanent magnet on the rotor on the structure, has only skewed stator slot.Make rotor structure complicated simultaneously, intensity difference, particularly permanent magnet are embedded in the squirrel-cage bar inboard, away from the air gap resultant magnetic field, make that the leakage flux of permanent magnet is bigger, and the utilance of permanent magnet is not high, and motor volume is less.
Just because of the pluses and minuses of these two kinds of motors make the threephase asynchronous machine cost hang down the large-scale use of popularizing that but reliably is able to simple in structure; The magneto cost is high, and structure is complicated, and it is popularized on a large scale and uses relatively difficulty.
The length that how can combine the two, acquisition has more the motor of advantage, is the direction of further researching and developing.
Summary of the invention
The utility model is high for the cost of the high consumption, poor efficiency and the permagnetic synchronous motor that solve threephase asynchronous machine, the problem of complex process; And a kind of asynchronous squirrel cage motor and rotor thereof are proposed; Make this motor have the performance efficient, energy-conservation, that cost is low, and can directly start.
The utility model is realized through following scheme:
Above-mentioned asynchronous squirrel cage motor, comprise casing, be fixed on said casing stator, be sheathed on the rotor in the said stator and the said rotor that is rigidly connected rotating shaft, support the end cap and the bearing of said rotating shaft; Said rotor is the segmented cage rotor, comprises at least three sections of series connection successively, and is provided with permanent-magnetic clamp between every adjacent two sections.
Described asynchronous squirrel cage motor, wherein: the mouse cage of said each section rotor is positioned at same straight line, and lays at interval with said permanent-magnetic clamp and connect through said rotating shaft crimping and be one; Said each section rotor has the skewed slot of skew certain angle vertically, and the skewed slot of said each section rotor is skew angle and bearing of trend unanimity vertically.
Described asynchronous squirrel cage motor; Wherein: said rotor is three sections; Comprise first section rotor, second section rotor and three-stage rotor, be provided with first permanent-magnetic clamp between first section rotor and second section rotor, be provided with second permanent-magnetic clamp between second section rotor and the three-stage rotor; Said first section rotor has first end ring and the first section rotor that is positioned at two ends; First end ring away from a side of first permanent-magnetic clamp is provided with the fan page or leaf; Said second section rotor is positioned at the opposite side of first permanent-magnetic clamp, has second end ring and the rotor that are positioned at two ends; Second section rotor is for to be complementary with first section rotor; Said three-stage rotor has the 3rd end ring and the three-stage rotor groove that is positioned at two ends; The 3rd end ring away from a side of second permanent-magnetic clamp is provided with the fan page or leaf; The three-stage rotor groove is for to be complementary with first section rotor and second section rotor; Said first permanent-magnetic clamp is consistent with the second permanent-magnetic clamp pole orientation.
Described asynchronous squirrel cage motor, wherein: said permanent-magnetic clamp is made up of the silicon steel sheet of Nd-Fe-B permanent magnet and multilayer stack; Said permanent magnet is a strip structure, and said silicon steel sheet is provided with the draw-in groove of a plurality of former point symmetries, and permanent magnet is placed in the draw-in groove.Said have air gap between the two adjacent permanent magnets in same draw-in groove, to intercept the magnetic line of force.
The rotor of above-mentioned asynchronous squirrel cage motor, said rotor is the segmented cage rotor, comprises at least three sections of series connection successively, and is provided with permanent-magnetic clamp between every adjacent two sections.
The rotor of described asynchronous squirrel cage motor, wherein: the mouse cage of said each section rotor is positioned at same straight line, and lays at interval with said permanent-magnetic clamp and connect through said rotating shaft crimping and be one.Said each section rotor has the skewed slot of skew certain angle vertically, and the skewed slot of said each section rotor is skew angle and bearing of trend unanimity vertically.
The rotor of described asynchronous squirrel cage motor; Wherein: said rotor is three sections; Comprise first section rotor, second section rotor and three-stage rotor, be provided with first permanent-magnetic clamp between first section rotor and second section rotor, be provided with second permanent-magnetic clamp between second section rotor and the three-stage rotor; Said first section rotor has first end ring and the first section rotor that is positioned at two ends; First end ring away from a side of first permanent-magnetic clamp is provided with the fan page or leaf; Said second section rotor is positioned at the opposite side of first permanent-magnetic clamp, has second end ring and the rotor that are positioned at two ends; Second section rotor is for to be complementary with first section rotor; Said three-stage rotor has the 3rd end ring and the three-stage rotor groove that is positioned at two ends; The 3rd end ring away from a side of second permanent-magnetic clamp is provided with the fan page or leaf; The three-stage rotor groove is for to be complementary with first section rotor and second section rotor; Said first permanent-magnetic clamp is consistent with the second permanent-magnetic clamp pole orientation.
The rotor of described asynchronous squirrel cage motor, wherein: said permanent-magnetic clamp is made up of the silicon steel sheet of Nd-Fe-B permanent magnet and multilayer stack; Said permanent magnet is a strip structure, and said silicon steel sheet is provided with the draw-in groove of a plurality of former point symmetries, and permanent magnet is placed in the draw-in groove.
Beneficial effect:
The motor of the utility model is owing to adopt the new structure rotor; In rotor, increase the permanent-magnetic clamp made from this best permanent magnet material at present of neodymium iron boron; The cage rotor of threephase asynchronous machine is divided into multistage, permanent-magnetic clamp and rotor are laid at interval, cage rotor still keeps skewed slot rate in the past; The magnetic direction of two permanent-magnetic clamps is consistent; Thereby integrated the advantage of threephase asynchronous machine and magneto, had simultaneously that cost is low, simple in structure, dependable performance and efficient is high, energy-conservation, electric current is little characteristics, thereby had wide market application prospect.
Description of drawings
Fig. 1 is the structural representation of the asynchronous squirrel cage motor of the utility model.
Fig. 2 is the structural perspective of the rotor of the asynchronous squirrel cage motor of the utility model.
Fig. 3 is the structural representation of the rotor of the asynchronous squirrel cage motor of the utility model.
Fig. 4 is the permanent-magnetic clamp structural representation of the asynchronous squirrel cage motor of the utility model.
Fig. 5 is the A-A cutaway view of Fig. 4.
Embodiment
As shown in Figure 1, the asynchronous squirrel cage motor of the utility model comprises casing 1, stator 2, rotor 3, rotating shaft 4, end cap 5 and bearing 6;
Like Fig. 2, shown in Figure 3; Rotor 3 is selected three-stage rotor for use in the present embodiment; Comprise successively first section rotor 31 of series connection, second section rotor 33 and three-stage rotor 35; Be provided with between 32, the second sections rotors 33 of first permanent-magnetic clamp and the three-stage rotor 35 between first section rotor 31 and the second section rotor 33 and be provided with second permanent-magnetic clamp 34.Above various piece is installed by rotating shaft 4 successively, and the mouse cage of the three-stage rotor casting and pouring of first section rotor 31, second section rotor 33 and three-stage rotor 35 point-blank.
Three-stage rotor 35 has the 3rd end ring 351 and the three-stage rotor groove 352 that is positioned at two ends; The 3rd end ring 351 away from a side of second permanent-magnetic clamp 34 is provided with fan page or leaf 350; Three-stage rotor groove 352 for and first section rotor 312 and second section skewed slot that rotor 332 is complementary, skew angle and bearing of trend are consistent vertically with it, promptly work as this three-stage rotor and combine, skewed slot is continuous.
First permanent-magnetic clamp 32 is consistent with second permanent-magnetic clamp, 34 pole orientation, and structure is identical.Be that example further specifies structure with first permanent-magnetic clamp 32 below:
Like Fig. 4, shown in Figure 5, first permanent-magnetic clamp 32 is made up of the Nd-Fe-B permanent magnet 321 and the silicon steel sheet 322 of multilayer stack.Permanent magnet 321 is a strip structure, and silicon steel sheet 322 is provided with the draw-in groove 323 of a plurality of former point symmetries, and permanent magnet 321 is placed in the draw-in groove 323, and this draw-in groove 323 can be provided with difformity and the varying number permanent magnet 321 with ccontaining varying number as required.If a plurality of permanent magnets 321 are arranged in same draw-in groove 323, then has air gap between the two adjacent permanent magnets 321, to intercept the magnetic line of force.
The installation of permanent-magnetic clamp it should be noted that: will guarantee that when mounted first permanent-magnetic clamp 32 is consistent with the pole orientation of second permanent-magnetic clamp 34; To guarantee that simultaneously silicon steel sheet can not disperse; Silicon steel sheet must compress, but can not let permanent magnet stressed, to prevent the stressed fragmentation of permanent magnet.
Operation principle:
When electric motor starting, because also keeping squirrel-cage bar on the rotor.Keeping two independently mouse cages, the S revolutional slip of these two mouse cages is the same, S=(N.-N)?∕N。Can know N=0 when starting, S=1 rotor relative stator rotating speed this moment differs maximum, and rotor upper bar induced electromotive force is maximum, thereby the electric current of rotor is also maximum;
The utility model rotor is divided into two parts, sees on the whole, and rotor resistance suitably increases, thereby has reduced starting current.N reaches N when rotating speed of motor.80 ﹪, permanent-magnetic clamp is with the rotor pull-in step rotational speed N of motor., making motor stabilizing work, the electric current in this moment rotor mouse cage is zero, no longer produces heat; When if motor load changes, when particularly load increased, motor speed N descended, and revolutional slip S then rises, and the increase of rotor cutting magnetic line makes the electric current in the rotor mouse cage increase, and comes balanced loaded variation thereby change torque.
The motor of the utility model is owing to increase the permanent-magnetic clamp made from this best permanent magnet material at present of neodymium iron boron in rotor; The cage rotor of threephase asynchronous machine is divided into multistage, permanent-magnetic clamp and rotor are laid at interval, cage rotor still keeps skewed slot rate in the past; The magnetic direction of two permanent-magnetic clamps is consistent; Nearer apart from the air gap resultant magnetic field, greatly reduce leakage flux, thereby integrated the advantage of threephase asynchronous machine and magneto; Make that motor has simultaneously that cost is low, simple in structure, dependable performance and efficient is high, energy-conservation, electric current is little characteristics, thereby have vast market prospect.
The protection range of non-so limitation the utility model so use the equivalence techniques variation that the utility model specification and diagramatic content do such as, all is contained in the protection range of the utility model.
Claims (10)
1. asynchronous squirrel cage motor, comprise casing, be fixed on said casing stator, be sheathed on the rotor in the said stator and the said rotor that is rigidly connected rotating shaft, support the end cap and the bearing of said rotating shaft; It is characterized in that: said rotor is the segmented cage rotor, comprises at least three sections of series connection successively, and is provided with permanent-magnetic clamp between every adjacent two sections.
2. asynchronous squirrel cage motor as claimed in claim 1 is characterized in that: the mouse cage of said each section rotor is positioned at same straight line, and lays at interval with said permanent-magnetic clamp and connect through said rotating shaft crimping and be one; Said each section rotor has the skewed slot of skew certain angle vertically, and the skewed slot of said each section rotor is skew angle and bearing of trend unanimity vertically.
3. according to claim 1 or claim 2 asynchronous squirrel cage motor; It is characterized in that: said rotor is three sections; Comprise first section rotor, second section rotor and three-stage rotor; Be provided with first permanent-magnetic clamp between first section rotor and second section rotor, be provided with second permanent-magnetic clamp between second section rotor and the three-stage rotor;
Said first section rotor has first end ring and the first section rotor that is positioned at two ends; First end ring away from a side of first permanent-magnetic clamp is provided with the fan page or leaf;
Said second section rotor is positioned at the opposite side of first permanent-magnetic clamp, has second end ring and the rotor that are positioned at two ends; Second section rotor is for to be complementary with first section rotor;
Said three-stage rotor has the 3rd end ring and the three-stage rotor groove that is positioned at two ends; The 3rd end ring away from a side of second permanent-magnetic clamp is provided with the fan page or leaf; The three-stage rotor groove is for to be complementary with first section rotor and second section rotor;
Said first permanent-magnetic clamp is consistent with the second permanent-magnetic clamp pole orientation.
4. asynchronous squirrel cage motor as claimed in claim 1 is characterized in that: said permanent-magnetic clamp is made up of the silicon steel sheet of Nd-Fe-B permanent magnet and multilayer stack; Said permanent magnet is a strip structure, and said silicon steel sheet is provided with the draw-in groove of a plurality of former point symmetries, and permanent magnet is placed in the draw-in groove.
5. asynchronous squirrel cage motor as claimed in claim 4 is characterized in that: said have air gap between the two adjacent permanent magnets in same draw-in groove, to intercept the magnetic line of force.
6. the rotor of an asynchronous squirrel cage motor, it is characterized in that: said rotor is the segmented cage rotor, comprises at least three sections of series connection successively, and is provided with permanent-magnetic clamp between every adjacent two sections.
7. the rotor of asynchronous squirrel cage motor as claimed in claim 6, it is characterized in that: the mouse cage of said each section rotor is positioned at same straight line, and lays at interval with said permanent-magnetic clamp and connect through said rotating shaft crimping and be one.
8. the rotor of asynchronous squirrel cage motor as claimed in claim 6, it is characterized in that: said each section rotor has the skewed slot of skew certain angle vertically, and the skewed slot of said each section rotor skew angle and bearing of trend vertically is consistent.
9. like the rotor of claim 6,7 and 8 arbitrary described asynchronous squirrel cage motors; It is characterized in that: said rotor is three sections; Comprise first section rotor, second section rotor and three-stage rotor; Be provided with first permanent-magnetic clamp between first section rotor and second section rotor, be provided with second permanent-magnetic clamp between second section rotor and the three-stage rotor;
Said first section rotor has first end ring and the first section rotor that is positioned at two ends; First end ring away from a side of first permanent-magnetic clamp is provided with the fan page or leaf;
Said second section rotor is positioned at the opposite side of first permanent-magnetic clamp, has second end ring and the rotor that are positioned at two ends; Second section rotor is for to be complementary with first section rotor;
Said three-stage rotor has the 3rd end ring and the three-stage rotor groove that is positioned at two ends; The 3rd end ring away from a side of second permanent-magnetic clamp is provided with the fan page or leaf; The three-stage rotor groove is for to be complementary with first section rotor and second section rotor;
Said first permanent-magnetic clamp is consistent with the second permanent-magnetic clamp pole orientation.
10. the rotor of asynchronous squirrel cage motor as claimed in claim 6 is characterized in that: said permanent-magnetic clamp is made up of the silicon steel sheet of Nd-Fe-B permanent magnet and multilayer stack; Said permanent magnet is a strip structure, and said silicon steel sheet is provided with the draw-in groove of a plurality of former point symmetries, and permanent magnet is placed in the draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203057179U CN202178686U (en) | 2011-08-22 | 2011-08-22 | Asynchronous squirrel-cage motor and rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203057179U CN202178686U (en) | 2011-08-22 | 2011-08-22 | Asynchronous squirrel-cage motor and rotor thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202178686U true CN202178686U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203057179U Expired - Fee Related CN202178686U (en) | 2011-08-22 | 2011-08-22 | Asynchronous squirrel-cage motor and rotor thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882298A (en) * | 2012-09-18 | 2013-01-16 | 无锡锡山特种风机有限公司 | Structure of rotor of three-phase permanent-magnet synchronous motor |
| CN104617728A (en) * | 2015-01-21 | 2015-05-13 | 广东威灵电机制造有限公司 | Mouse cage type motor |
| CN105978184A (en) * | 2016-05-06 | 2016-09-28 | 吕三元 | High-efficient asynchronous motor for new-energy automobile |
| CN106160387A (en) * | 2016-08-31 | 2016-11-23 | 伊泽瑞尔(大连)科技有限公司 | A kind of high startability permanent magnet machine rotor |
| CN106451854A (en) * | 2016-11-17 | 2017-02-22 | 南京航空航天大学 | Interdigital consequent-pole permanent magnet motor |
| CN106505760A (en) * | 2016-11-17 | 2017-03-15 | 南京航空航天大学 | A kind of Consequent pole permanent magnet motor of rotor segment |
| CN107222070A (en) * | 2017-06-23 | 2017-09-29 | 江苏航天动力机电有限公司 | Compact asynchronous starting permagnetic synchronous motor segmented rotor processing technology |
-
2011
- 2011-08-22 CN CN2011203057179U patent/CN202178686U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882298A (en) * | 2012-09-18 | 2013-01-16 | 无锡锡山特种风机有限公司 | Structure of rotor of three-phase permanent-magnet synchronous motor |
| CN104617728A (en) * | 2015-01-21 | 2015-05-13 | 广东威灵电机制造有限公司 | Mouse cage type motor |
| CN105978184A (en) * | 2016-05-06 | 2016-09-28 | 吕三元 | High-efficient asynchronous motor for new-energy automobile |
| CN106160387A (en) * | 2016-08-31 | 2016-11-23 | 伊泽瑞尔(大连)科技有限公司 | A kind of high startability permanent magnet machine rotor |
| CN106451854A (en) * | 2016-11-17 | 2017-02-22 | 南京航空航天大学 | Interdigital consequent-pole permanent magnet motor |
| CN106505760A (en) * | 2016-11-17 | 2017-03-15 | 南京航空航天大学 | A kind of Consequent pole permanent magnet motor of rotor segment |
| CN106451854B (en) * | 2016-11-17 | 2019-03-29 | 南京航空航天大学 | A kind of interdigital Consequent pole permanent magnet motor |
| CN107222070A (en) * | 2017-06-23 | 2017-09-29 | 江苏航天动力机电有限公司 | Compact asynchronous starting permagnetic synchronous motor segmented rotor processing technology |
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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 |
Granted publication date: 20120328 Termination date: 20140822 |
|
| EXPY | Termination of patent right or utility model |