Magnetic circuit structure of washer variable frequency DC motor

Abstract

The invention provides a magnetic circuit structure of a washer variable frequency DC motor, and relates to the technical field of washers. The magnetic circuit structure of the washer variable frequency DC motor comprises a stator iron core, magnetic shoes are arranged on the outer circumference of the stator iron core, and a magnetic yoke is arranged outside the magnetic shoes. The magnetic circuit structure of the washer variable frequency DC motor is characterized in that an N pole and an S pole are formed in the same magnetic shoe through magnetic steel magnetizing, the magnetic shoes are circumferentially and evenly distributed on the magnetic yoke so that each pair of N pole and S pole can deflect relative to the angle of the circle center, harmonic waves of 2p and the multiple of 2p are weakened, the efficiency of the motor is improved, and meanwhile the processing technology is simplified. Twelve magnetic shoes are evenly distributed on the magnetic yoke to form a motor with 12 pairs of poles, and cogging torque can also be weakened. The entire machine working noise caused by torque fluctuation is reduced, meanwhile, the motor can achieve higher torque density, the mechanical hardness of the motor is improved, and revolution drop caused by incremental loading of the motor is reduced. Meanwhile, the system response speed is increased under the condition of the same loads, the acceleration time can be shortened, and the unit eddy-current loss of the stator iron core of the motor can further be reduced.

Description

technical field [0001] The invention relates to the technical field of washing machines, in particular to a magnetic circuit structure of a frequency conversion direct current motor of a washing machine. Background technique [0002] Due to the soft mechanical properties of the motor in the existing frequency conversion DC pulsator washing machine, the motor accelerates slowly when the washing machine has a lot of clothes and a large load, resulting in a small impact force of the pulsator of the washing machine on the clothes and water flow, which cannot Effective rubbing and squeezing are formed on the clothes, and the washing effect is relatively poor. [0003] The working principle of the existing dual-power washing machine is that the inner cylinder of the washing machine and the pulsator move relative to each other to effectively rub, squeeze, beat, and impact the clothes to improve the washing effect, but the DDM DC motor used in the DC inverter washing machine The ch...

AI Technical Summary

Problems solved by technology

[0002] Due to the soft mechanical properties of the motor in the existing frequency conversion DC pulsator washing machine, the motor accelerates slowly when the washing machine has a lot of clothes and a large load, resulting in a small impact force of the pulsator of the washing machine on the clothes and water flow, which cannot Form effective rubbing and squeezing on clothes, and the washing effect is relatively poor

[0003] The working principle of the existing dual-power washing machine is that the inner cylinder of the washing machine and the pulsator move relative to each other to effectively rub, squeeze, beat, and impact the clothes to improve the washing effect, but the DDM DC motor used in the DC inverter washing machine The characteristics are relatively soft, and the acceleration time is relatively long under heavy load conditions, which relatively reduces the washing effect

Images