CN105071559A - Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine - Google Patents
Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine Download PDFInfo
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- CN105071559A CN105071559A CN201510582987.7A CN201510582987A CN105071559A CN 105071559 A CN105071559 A CN 105071559A CN 201510582987 A CN201510582987 A CN 201510582987A CN 105071559 A CN105071559 A CN 105071559A
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Abstract
The invention discloses a stator punching sheet applied to an external rotor permanent-magnet brushless motor of an impeller type washing machine. The stator punching sheet is characterized by comprising a punching sheet body provided with stator teeth and a stator yoke part, wherein a proportion of the outer diameter to the inner diameter of the punching sheet body is 1.51875-1.91875. The stator punching sheet can reduce loss of the motor, so as to improve energy conversion efficiency.
Description
Technical field
the present invention relates to a kind of stator punching, particularly a kind of stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine.
Background technology
motor is while converting electric energy to mechanical energy, and loss part energy own, typical AC-DC motor loss generally can be divided into fixed loss, variable loss and stray loss three part.Variable loss, with load variations, comprises stator resistance loss (copper loss), rotor resistance loss and brush resistance loss; Fixed loss and load have nothing to do, and it comprises core loss (iron loss) and mechanical loss.Iron loss is made up of magnetic hysteresis loss and eddy current loss again, its square to be directly proportional to voltage, and wherein magnetic hysteresis loss is also inversely proportional to frequency; Other stray loss is then mechanical loss and other loss, comprises the frictional dissipation rotor windage loss etc. of bearing.Therefore, the energy conversion efficiency of conventional motor is lower.
Summary of the invention
the object of the invention is to, a kind of stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine is provided.The present invention can reduce the loss of motor, thus improves energy conversion efficiency.
technical scheme of the present invention: a kind of stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, is characterized in that: comprise the punching body with stator tooth and stator yoke, the ratio of punching body diameter and punching body internal diameter is 1.51875 ~ 1.91875.
in the aforesaid stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, the ratio of described stator tooth width and stator yoke width is 0.9 ~ 1.1.
in the aforesaid stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, the external diameter of described punching body is 150 ~ 200mm.
in the aforesaid stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, described punching body is formed by connecting by one or more punching monomer.
compared with prior art, the present invention, by after the ratio of punching body diameter and punching body internal diameter specifically being limited, makes brushless electric machine under unit effective volume, can significantly improve the energy conversion efficiency of brushless electric machine, by experiment, if stator outer diameter is 165mm, diameter of stator bore is 96mm, and iron core folds the thick brushless electric machine for 18mm, the most high workload timeliness of this motor can reach 86%, power output 350w, rotating speed 1000rpm, torque 3.3Nm.And coordinate the proportionate relationship of stator tooth width and stator yoke width, substantially increase on the whole in unit iron core weight (volume) situation, the loss of motor can be reduced to greatest extent, thus improve the efficiency of motor.Wherein, can realize obtaining maximum power output with most economical size, the effect of maximum efficiency.The feature that the invention process structure is comparatively simple and easy to use.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention.
being labeled as in accompanying drawing: 1-punching body, 2-stator yoke, 3-stator tooth.
Embodiment
below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation limited the present invention.
embodiment.For a stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, it is characterized in that: comprise the punching body with stator tooth and stator yoke, the ratio of punching body diameter A and punching body internal diameter B is 1.51875 ~ 1.91875; The ratio of described stator tooth width C and stator yoke width D is 0.9 ~ 1.1.
be preferably, the ratio of described punching body diameter A and punching body internal diameter B is 1.71875; Described stator tooth width C and the ratio of stator yoke width D are 1.02857.
described punching body diameter A is 150 ~ 200mm.
described punching body is formed by connecting by one or more punching monomer.When assembling punching monomer forms stator core, be all generally that punching monomer is superimposed as iron core monomer, then continue to be connected from beginning to end by being coordinated by draw-in groove and convex falcon between iron core monomer, thus obtain stator core.
the such as motor of stator outer diameter A=165mm diameter of stator bore B=96mm, it is 18mm that iron core is folded thick, and it is in actual applications provable, and the efficiency of described brushless, permanently external rotor electric machine can reach 86%, power output 350w, rotating speed 1000rpm, torque 3.3Nm.The ratio of described size makes brushless electric machine under unit effective volume, has very high energy conversion efficiency.The determination of these two proportionate relationships, substantially increases on the whole in unit iron core weight (volume) situation, can reduce the loss of motor to greatest extent, thus improves the efficiency of motor.Wherein, can realize obtaining maximum power output with most economical size, the effect of maximum efficiency.
Claims (4)
1. for a stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine, it is characterized in that: comprise the punching body with stator tooth and stator yoke, the ratio of punching body diameter and punching body internal diameter is 1.51875 ~ 1.91875.
2. the stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine according to claim 1, is characterized in that: the ratio of described stator tooth width and stator yoke width is 0.9 ~ 1.1.
3. the stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine according to claim 1, is characterized in that: the external diameter of described punching body is 150 ~ 200mm.
4. the stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine according to claim 1,2 or 3, is characterized in that: described punching body is formed by connecting by one or more punching monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582987.7A CN105071559A (en) | 2015-09-15 | 2015-09-15 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582987.7A CN105071559A (en) | 2015-09-15 | 2015-09-15 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071559A true CN105071559A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510582987.7A Pending CN105071559A (en) | 2015-09-15 | 2015-09-15 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105071559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
Citations (6)
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| CN202575651U (en) * | 2012-03-16 | 2012-12-05 | 北京明正维元电机技术有限公司 | Directly-driven permanent-magnet synchronous elevator traction machine |
| CN103746475A (en) * | 2013-12-03 | 2014-04-23 | 广东威灵电机制造有限公司 | Washing machine outer rotor motor, and stator iron core and stator lamination thereof |
| CN104124788A (en) * | 2013-04-26 | 2014-10-29 | 苏州奥宝杰电机科技有限公司 | Brushless motor punching sheets |
| CN204258457U (en) * | 2014-12-08 | 2015-04-08 | 北京京仪敬业电工科技有限公司 | Industrial ceiling fan AC permanent magnet synchronous motor stator punching |
| CN204258458U (en) * | 2014-12-08 | 2015-04-08 | 北京京仪敬业电工科技有限公司 | A kind of permanent magnet synchronous motor stator punching |
| CN204886441U (en) * | 2015-09-15 | 2015-12-16 | 浙江伟康电机有限公司 | A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor |
-
2015
- 2015-09-15 CN CN201510582987.7A patent/CN105071559A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202575651U (en) * | 2012-03-16 | 2012-12-05 | 北京明正维元电机技术有限公司 | Directly-driven permanent-magnet synchronous elevator traction machine |
| CN104124788A (en) * | 2013-04-26 | 2014-10-29 | 苏州奥宝杰电机科技有限公司 | Brushless motor punching sheets |
| CN103746475A (en) * | 2013-12-03 | 2014-04-23 | 广东威灵电机制造有限公司 | Washing machine outer rotor motor, and stator iron core and stator lamination thereof |
| CN204258457U (en) * | 2014-12-08 | 2015-04-08 | 北京京仪敬业电工科技有限公司 | Industrial ceiling fan AC permanent magnet synchronous motor stator punching |
| CN204258458U (en) * | 2014-12-08 | 2015-04-08 | 北京京仪敬业电工科技有限公司 | A kind of permanent magnet synchronous motor stator punching |
| CN204886441U (en) * | 2015-09-15 | 2015-12-16 | 浙江伟康电机有限公司 | A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |