CN204886441U - A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor - Google Patents
A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor Download PDFInfo
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- CN204886441U CN204886441U CN201520710996.5U CN201520710996U CN204886441U CN 204886441 U CN204886441 U CN 204886441U CN 201520710996 U CN201520710996 U CN 201520710996U CN 204886441 U CN204886441 U CN 204886441U
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- stator
- punching
- rotary drum
- drum washing
- washing machine
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Abstract
(B, ) the utility model discloses a stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor, its characterized in that: including having the dash lamellar body of stator tooth with stator yoke portion, be (b) (b) 1.51875 (b) (b)-1.91875 (b) (b) towards lamellar body external diameter and the proportion towards the lamellar body internal diameter. The utility model discloses can reduce the loss of motor to improve energy conversion efficiency. (B, )
Description
Technical field
the utility model 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.
Utility model content
the purpose of this utility model is, provides a kind of stator punching for rotary drum washing machine external rotor permanent magnet brushless electric machine.The utility model can reduce the loss of motor, thus improves energy conversion efficiency.
the technical solution of the utility model: for the stator punching of 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.
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 utility model, 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 utility model implements structure feature comparatively simple and easy to use.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model.
being labeled as in accompanying drawing: 1-punching body, 2-stator yoke, 3-stator tooth.
Embodiment
below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation limited the utility model.
embodiment.For the stator punching of 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 the stator punching of 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 |
|---|---|---|---|
| CN201520710996.5U CN204886441U (en) | 2015-09-15 | 2015-09-15 | A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710996.5U CN204886441U (en) | 2015-09-15 | 2015-09-15 | A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886441U true CN204886441U (en) | 2015-12-16 |
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ID=54830762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520710996.5U Active CN204886441U (en) | 2015-09-15 | 2015-09-15 | A stator towards piece for rotary drum washing machine external rotor permanent magnetism brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204886441U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071559A (en) * | 2015-09-15 | 2015-11-18 | 浙江伟康电机有限公司 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
| CN106300718A (en) * | 2016-08-30 | 2017-01-04 | 珠海凯邦电机制造有限公司 | Motor and stator punching thereof |
| CN107046354A (en) * | 2016-02-06 | 2017-08-15 | 南京德朔实业有限公司 | Brushless motor and electric tool |
| CN110768401A (en) * | 2018-07-25 | 2020-02-07 | 广东美芝制冷设备有限公司 | Motor, compressor and refrigeration plant |
-
2015
- 2015-09-15 CN CN201520710996.5U patent/CN204886441U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071559A (en) * | 2015-09-15 | 2015-11-18 | 浙江伟康电机有限公司 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
| CN107046354A (en) * | 2016-02-06 | 2017-08-15 | 南京德朔实业有限公司 | Brushless motor and electric tool |
| CN107046354B (en) * | 2016-02-06 | 2020-05-26 | 南京德朔实业有限公司 | Brushless motor and electric tool |
| CN106300718A (en) * | 2016-08-30 | 2017-01-04 | 珠海凯邦电机制造有限公司 | Motor and stator punching thereof |
| CN110768401A (en) * | 2018-07-25 | 2020-02-07 | 广东美芝制冷设备有限公司 | Motor, compressor and refrigeration plant |
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