Brushless electric machine for dust collector

Abstract

The invention discloses a brushless electric machine for a dust collector. The brushless electric machine for the dust collector comprises a controller, a rectifier, a stator core, a rotor core and a shell, wherein the stator core is embedded with windings; the rotor core is arranged inside the stator core; the shell is fixedly connected with the stator core and the rotor core; three groups of windings are embedded on the stator core; rubidium, ferrum and boron magnet steel is sintered at the periphery of the middle part of the rotor core; the magnetic poles of the direction in which axle wires are positioned, pointing to the adjacent magnet steel are different; a stainless steel hoop is arranged at the periphery of the magnet steel; the controller comprises a driver and a position detection chip; and the rectifier comprises a transformer and an alternating current converter. According to the brushless electric machine, the rotating speed of the motor is effectively increased in a manner that the stator is outside and the rotor is inside, the position of the motor can be detected by the position detection chip, and the accuracy of position detection is effectively improved. In addition, the brushless electric machine also has the characteristics of being low in noise, small in generated interference, small in volume, high in efficiency, wide in speed adjusting range, easy to maintain, long in service life, strong in versatility and the like.

Description

technical field [0001] The present invention relates to the field of vacuum cleaners, and more specifically, to a brushless motor for vacuum cleaners. Background technique [0002] The vacuum cleaner motor is the heart of the vacuum cleaner. The main types of vacuum cleaner motors are dry vacuum cleaner motors and wet and dry vacuum cleaners. The motor of the vacuum cleaner is composed of two parts: the motor part and the fan part. The motor of the vacuum cleaner has high requirements on the speed, generally at 20,000 to 30,000 rpm. In addition, in order to save indoor space, vacuum cleaner motors are usually required to be small in size. [0003] Usually, vacuum cleaner motors mainly use series-excited motors, also known as series-excited motors. The brush structure of this type of motor usually has the following disadvantages: [0004] Due to the high-speed rotation, the brushes are easy to wear and tear, which may cause limited service life of the motor and high mainte...

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Problems solved by technology

[0006] In order to overcome the defects that existing brushless motors are difficult to be used in vacuum cleaners, such as small volume and high speed, the technical problem to be solved by the present invention is to propose a brushless motor for vacuum cleaners, which has high speed, small size and high efficiency , easy maintenance, strong versatility and little interference

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