Pumps and Washing Equipment

Abstract

The present invention provides a pump and washing equipment. The pump includes a driving device. The driving device is provided with a driving shaft, a rotor assembly sleeved on the driving shaft, and a stator assembly located on the outer periphery of the rotor assembly. and a plastic connecting piece arranged between the rotor assembly and the drive shaft, the plastic connecting piece is provided with a first wall spaced between the rotor assembly and the drive shaft shaft wall, the At least one cavity extending along the axial direction of the drive shaft is provided in the first wall, one end of the cavity is sealed, and the other end of the cavity is provided with an opening. Such setting reduces the weight of the rotor assembly, reduces the moment of inertia of the rotor assembly, reduces the influence on the concentricity of the rotor assembly, and reduces the distance between the rotor assembly and the drive shaft. The generated noise and abnormal vibration enable the rotor assembly to be more precisely controlled.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a pump and washing equipment. Background technique [0002] With the development of brushless motors, especially the promotion and application in the field of household appliances, brushless motors are highly recognized for their advantages such as high power density and high efficiency. Brushless motor is an industry that has developed rapidly in recent years, and many processes need to be improved. [0003] In the prior art, the weight of the rotor core and plastic parts in the brushless motor is relatively heavy. During the operation of the motor, the moment of inertia of the rotor is large, and the adjustment amount during dynamic balancing is large. In the high-speed rotation of the motor, the concentricity is not good. , so that the motor produces abnormal vibration and noise, resulting in poor operation of the motor, which directly affects the work of the motor. Cont...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the weight of the rotor core and plastic parts in the brushless motor is relatively heavy. During the operation of the motor, the moment of inertia of the rotor is large, and the adjustment amount during dynamic balancing is large. In the high-speed rotation of the motor, the concentricity is not good. , causing the motor to generate abnormal vibration and noise, resulting in poor operation of the motor and directly affecting the work of the motor

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