12-pole external-rotor capacitor-run asynchronous motor

Abstract

The invention relates to a 12-pole external-rotor capacitor-run asynchronous motor, which comprises a motor stator arranged on a motor shaft, and a motor rotor sleeved outside the motor stator; the number of stator slots of the motor stator is 24, wherein the number of main winding slots and the number of secondary winding slots are respectively 12; the ratio of the number of the stator slots of the motor stator to the number of rotor slots of the motor rotor is 0.3-0.7; the ratio of the stator outer diameter D1 of the motor stator to the rotor outer diameter D2 of the motor rotor is 0.68-0.95. The 12-pole external-rotor capacitor-run asynchronous motor has the characteristics of small motor shock, low noise, high rotating speed and the like; in addition, in order to fully utilize the iron core punching area, the slot type is designed into a double-row slot structure, the slot area and tooth area are increased and the service efficiency of an iron core is effectively improved; moreover, the slot type adopts arc transition, the width of tooth parts and yoke parts of the rotor and the stator is uniformly designed, the distribution of magnetic flux density of the tooth parts and yoke parts of the rotor and the stator is reasonable and relative balanced, the reduction of iron consumption of the punching is facilitated, the radiation of the motor is reduced, the winding temperature rise is reduced, and the magnetic flux density and motor noise are reduced.

Description

technical field [0001] The invention relates to a 12-pole outer-rotor capacitor-operated asynchronous motor, in particular to a 12-pole outer-rotor capacitor-operated asynchronous motor for fans, and belongs to the transformation technology of the 12-pole outer-rotor capacitor-operated asynchronous motor. Background technique [0002] At present, there are 12 poles, 14 poles and 16 poles for rotor capacitor running asynchronous motors at home and abroad. Among them, the 14-pole electromagnetic speed is 428.5rpm, the 16-pole electromagnetic speed is 375rpm, and the 12-pole electromagnetic speed is 500rpm. The electromagnetic speed of the 12-pole motor is the highest, and it has the characteristics of high wind speed when applied to ceiling fans. In addition, the 1200mm ceiling fan and the 1400mm ceiling fan use the existing domestic 14-pole or 16-pole motor compared with the 12-pole motor. When the national fan energy efficiency standard is met, the cost of using the 12-pole ...

AI Technical Summary

Problems solved by technology

However, the vibration and noise of the existing 12-pole motor are also relatively large, and it has not been applied to 48-inch and 46-inch ceiling fans.

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