CN2164611Y - Electric motor - Google Patents
Electric motor Download PDFInfo
- Publication number
- CN2164611Y CN2164611Y CN 93231403 CN93231403U CN2164611Y CN 2164611 Y CN2164611 Y CN 2164611Y CN 93231403 CN93231403 CN 93231403 CN 93231403 U CN93231403 U CN 93231403U CN 2164611 Y CN2164611 Y CN 2164611Y
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- stator
- ratio
- diameter
- motor
- rotor
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- Expired - Fee Related
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Abstract
The utility model discloses an electric motor with an improved internal structure, being composed of a front end cover, a centrifugal switch, a connection box, a stator, a rotor, a starting capacitor, a back end cover, a fan, a fan housing and a base. When the number of pole pairs is 1, the ratio of the inner diameter of the stator to the outer diameter of the stator is in the range of from 0.55 to 0.59, the ratio of the height of a stator groove to the height of a high-gain groove at the yoke part of the stator is in the range of from 0.38 to 0.44, and the ratio of the iron core length of the stator to the inner diameter of the stator is in the range of from 0.9 to 1.1. The utility model has the advantages that the output power can be enhanced under the condition of unchanged external size; if the output power is the same, material can be saved, and the comprehensive performance of the electric motor can be enhanced.
Description
The utility model relates to a kind of improvement of electric machine structure, is that motor can increase its rotor diameter specifically, promptly increases diameter of stator bore accordingly, and stator slot area shape etc. has all been done suitable improvement, to improve the motor power output.
One of main performance of motor is its power output, promptly under identical main raw material(s) condition, higher power output is arranged for well.This performance of motor is to have good electromagnetic performance to realize by motor internal, and the geometry and the size of good electromagnetic performance and electric machine iron core punching each several part magnetic circuit and stator and rotor flute profile have much relations.And present motor all is the modular in design that adopts, i.e. its rotor of motor of certain power and the fixed size of stator, i.e. and the physical dimension and the fixed in shape of electric machine iron core punching each several part magnetic circuit and stator and rotor, thereby can not improve its power output.
The utility model purpose is to overcome the shortcoming in the existing electric machine structure, the internal structure of motor is done one to be improved, promptly to after motor stator and rotor shape and the certain improvement of size do, do not change the overall dimension of motor, do not change frame diameter and core length, can improve the power output and the main performance of motor.
The utility model purpose is achieved through the following technical solutions: this kind motor, be assembled by front end housing, centrifugal switch, terminal box, stator, rotor, start capapcitor, rear end cap, fan, fan housing, support, when number of pole-pairs is 1, the ratio of its diameter of stator bore and stator outer diameter is 0.55～0.59, it is 0.38～0.44 that the stator slot height adds the high ratio of groove with stator yoke portion height, and stator core length is 0.9～1.1 with diameter of stator bore ratio.
For number of pole-pairs is 2 o'clock, this kind motor also is to be assembled by front end housing, centrifugal switch, terminal box, stator, rotor, start capapcitor, rear end cap, fan, fan housing, support, the ratio of its diameter of stator bore and stator outer diameter is 0.62～0.67, it is 0.5～0.65 that the stator slot height adds the high ratio of groove with stator yoke portion height, and stator core length is 0.9～1.1 with diameter of stator bore ratio.
The power output of motor is measured with kilogram meter/per second, and the rotating speed of alternating current machine is relevant with the number of poles of the frequency of electrical network and motor, and its expression formula is n=(f60)/(p), n: be motor speed, revolution/per minute; F: mains frequency; P: number of pole-pairs; When the number of pole-pairs of having determined motor, mains frequency is fixed, and rotating speed of motor has also just been determined.Under the situation of identical exciting curent, rotor diameter strengthens like this, and the rotor linear velocity also increases, thereby power output has also increased.But the increase of rotor diameter has certain limit; because keep the exciting curent value not reduce; be that claimed stator yoke portion sectional area does not reduce; make the magnetic density of yoke portion keep not reducing; when this just requires, internal diameter constant at stator outer diameter to strengthen; its each several part size keeps certain proportion, and the certain space of stator slot maintenance, to hold due lead.
Owing to strengthened rotor diameter, diameter of stator bore is also with regard to corresponding increase, so must rationally change stator slot shape in the hope of the rational magnetic circuit of stator each several part cross section, so former conventional stator slot size has been done change, rational flute profile should be arranged, and take into account enough yoke portion height, to reach the utility model purpose.
The utility model has the advantages that because internal structure of motor has been done improvement, externally can improve the motor power output under the condition of size constancy, if power output is constant, according to electric machine structure of the present utility model, can save raw material, improve the potential ability of unit materials, improved the comprehensive effectiveness of motor.
Existing embodiment of accompanying drawings:
Fig. 1 is the structure chart of motor.
Fig. 2 is with former CO
2Stator laminating structure figure after 550 watt of 2 utmost point motor retrofit design of 8022 types, the raising of remodeling back is exerted oneself 100 watts.
This motor is assembled by front end housing 1, centrifugal switch 2, terminal box 3, stator 4, rotor 5, start capapcitor 6, rear end cap 7, fan 8, fan housing 9, support 10.Its rotor diameter r
1, promptly diameter of stator bore is than former CO
2550 watt of 2 utmost point motor of 8022 types is increased to 73 millimeters by 67 millimeters, and stator outer diameter R remains unchanged, and is 128 millimeters, and diameter of stator bore/stator outer diameter ratio is 0.57, and the height hjs of stator yoke portion changes 16.5 millimeters into by former 17.7 millimeters, the high h of stator slot
2Change 11 millimeters into by 12.8 millimeters, stator slot height/(stator yoke portion height+groove height) is 0.4, because the stator width has reduced, the stator slot height has shortened, in order to guarantee to hold the lead of some, channel-section will suitably be widened, so the facewidth has diminished, stator core length is 75 millimeters, and stator core length/diameter of stator bore is 1.02.The present embodiment measured result: power is 650 watts; Efficient brings up to 69% by specified standard 68%～61%; Power factor brings up to 0.873 by 0.79～0.72 of regulation; Starting torque brings up to 3.0 by specified standard 2.8～2.38; Breakdown torque is brought up to 2.5 times by 1.8～1.62 times of specified standards; Starting current is reduced to 30.4 peaces by specified standard 29～34.8 peaces; Temperature rise is reduced to 72 ℃ by 75 ℃ of standard code, (more than be the E class F insulation.) combination property improves a lot.
The utility model result of use in the scope of 250 watt of 2 utmost point of motor power output, 4 utmost points～2.2 kilowatt 2 utmost points, 4 utmost points is best.
Claims (2)
1, a kind of motor, be assembled by front end housing, centrifugal switch, terminal box, stator, rotor, start capapcitor, rear end cap, fan, fan housing, support, it is characterized in that when number of pole-pairs is 1, the ratio of its diameter of stator bore and stator outer diameter is 0.55～0.59, it is 0.38～0.44 that the stator slot height adds the high ratio of groove with stator yoke portion height, and stator core length is 0.9～1.1 with diameter of stator bore ratio.
2, a kind of motor, be assembled by front end housing, centrifugal switch, terminal box, stator, rotor, start capapcitor, rear end cap, fan, fan housing, support, it is characterized in that when number of pole-pairs is 2, the ratio of its diameter of stator bore and stator outer diameter is 0.62～0.67, it is 0.5～0.65 that the stator slot height adds the high ratio of groove with stator yoke portion height, and the long ratio with diameter of stator bore of stator core is 0.9～1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231403 CN2164611Y (en) | 1993-07-19 | 1993-07-19 | Electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231403 CN2164611Y (en) | 1993-07-19 | 1993-07-19 | Electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164611Y true CN2164611Y (en) | 1994-05-11 |
Family
ID=33807872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93231403 Expired - Fee Related CN2164611Y (en) | 1993-07-19 | 1993-07-19 | Electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164611Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433504C (en) * | 2004-09-27 | 2008-11-12 | 乐金电子(天津)电器有限公司 | Stator core of motor of washing machine |
-
1993
- 1993-07-19 CN CN 93231403 patent/CN2164611Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433504C (en) * | 2004-09-27 | 2008-11-12 | 乐金电子(天津)电器有限公司 | Stator core of motor of washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |