Motor and washing machine

Abstract

The invention discloses a motor and a washing machine. The motor includes: a stator core, the stator core is provided with an axially through hole, the inner wall of the stator core is provided with a plurality of open slots along the circumference, and stator teeth are formed between two adjacent open slots, and the stator teeth include at least Equal width part with equal tooth width; rotor core, the rotor core is set in the through hole, and a plurality of installation grooves for setting permanent magnets are opened on the rotor core along the circumferential direction, and the rotor core is in the area outside the installation groove A magnetic isolation area for magnetic isolation and a magnetic permeation area for magnetic conduction are set; wherein, the magnetic permeation area includes: a first area adjacent to the installation groove, a second area adjacent to the outer periphery of the rotor core, and a connection between the first area and the second area. In the third area of ​​the area, the width of the third area is equal to the width, and the value range of the width of the third area is ±0.5 mm from the width of the equal width portion. On the premise of reducing the amount of permanent magnet materials, the power density of the motor can be increased, thereby reducing the stacked thickness of the motor and the axial dimension of the motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor and a washing machine. Background technique [0002] Permanent magnet synchronous motors are widely used in household appliances such as washing machines because of their high efficiency. However, due to the high price of the permanent magnet synchronous motor, the range and space of its application are limited. Permanent magnet synchronous motors need to install permanent magnets on the rotor core to form magnetic poles. However, when the rotor core cooperates with the stator core, there will often be magnetic flux leakage. In order to improve the power density of the motor, it is often necessary to increase the stack thickness of the motor. Correspondingly, the amount of iron core and permanent magnet materials will be increased, thereby increasing the manufacturing cost of the motor. Contents of the invention [0003] In view of this, an embodiment of the present in...

AI Technical Summary

Problems solved by technology

However, due to the high price of permanent magnet synchronous motors, the scope and space of its application are limited.

Permanent magnet synchronous motors need to install permanent magnets on the rotor core to form magnetic poles. However, when the rotor core cooperates with the stator core, there will often be magnetic flux leakage. In order to improve the power density of the motor, it is often necessary to increase the stack thickness of the motor. Correspondingly, the amount of iron core and permanent magnet materials will be increased, thereby increasing the manufacturing cost of the motor

Images