Stator cores, motors and laundry handling equipment

Abstract

The present application provides a stator core, a motor, and clothes processing equipment. The stator core includes a stator yoke (1), a stator tooth (2) and pole shoes (3), and fillets and / or chamfers are formed between the stator yoke (1) and the stator teeth (2), Rounded corners and / or chamfered corners are formed between the stator teeth (2) and the pole pieces (3), the radius of the rounded corners R≥2mm, and the length of the right-angled sides of the chamfered corners C≥2mm. According to the stator core of the present application, the structural strength of the stator core can be increased, the electromagnetic noise caused by the cogging torque and torque ripple of the motor tooth vibration, and the noise generated by the tooth vibration caused by the radial electromagnetic force can be reduced .

Description

technical field [0001] The present application relates to the technical field of motor equipment, and in particular to a stator core, a motor and clothes processing equipment. Background technique [0002] Taking the direct drive (DD) motor of a washing machine as an example, the motor has a large electromagnetic noise problem when it works in high-speed dehydration conditions. The main principles of the formation of electromagnetic noise are: [0003] 1. Under the influence of radial electromagnetic force, the motor will cause the vibration of the teeth during operation, and then form electromagnetic noise; [0004] 2. The cogging torque and torque ripple of the motor itself will also cause the teeth of the motor to vibrate when the motor is working, forming electromagnetic noise. [0005] The traditional DD motor has only small rounded corners reserved for the mold opening process, which cannot overcome the above problems. In terms of noise, the electromagnetic peak of th...

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Problems solved by technology

[0003] 1. Under the influence of radial electromagnetic force, the motor will cause the vibration of the teeth during operation, and then form electromagnetic noise;

[0004] 2. The cogging torque and torque ripple of the motor itself will also cause the teeth of the motor to vibrate when the motor is working, forming electromagnetic noise

[0005] The traditional DD motor has only a small fillet reserved for the mold opening process, which cannot overcome the above problems. In terms of noise, the electromagnetic peak of the motor is particularly prominent, and there is sharp electromagnetic noise

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