Motor and washing machine

Abstract

The invention discloses a motor and a washing machine. The motor comprises a stator iron core, wherein the stator iron core is provided with an axial through hole, the inner wall of the stator iron core is provided with a plurality of open slots along the circumferential direction, a stator tooth is formed between two adjacent open slots, and the stator tooth at least comprises an equal-width partwith equal tooth width; a rotor core which is arranged in the through hole, wherein a plurality of mounting grooves used for arranging the permanent magnets are formed in the rotor core in the circumferential direction, and a magnetic isolation area used for magnetic isolation and a magnetic conduction area used for magnetic conduction are arranged in the area, outside the mounting grooves, of the rotor core; the magnetic conductive area comprises a first area adjacent to the mounting groove, a second area adjacent to the outer periphery of the rotor core, and a third area connecting the first area and the second area, the width of the third area is equal, and the value range of the width of the third area is + / -0.5 mm of the width of the equal-width part. The power density of the motor can be improved on the premise of reducing the use amount of permanent magnet materials, so that the stack thickness and the axial size of the motor are reduced.

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

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