Motor and air blower

Abstract

The embodiment of the invention relates to a motor and air blower. The motor includes a housing, a pressure expander, a rotor assembly and a stator assembly. The housing includes a shell part, an inner ring part, a plurality of clamping arms and a plurality of vertical blades. A circular passage is formed between the inner ring part and the shell part, and the plurality of vertical blades are connected with the shell part and the inner ring part. The plurality of clamping arms are arranged on an inner wall of the shell part in a surrounding manner, and are connected and fixed to the shell part. The pressure expander includes a main body part and a plurality of bent blades. The bent blades are annularly arranged on the main body part, are in one-to-one correspondence with the vertical blades on the housing, and are connected with the vertical blades. The rotor assembly includes a bearing assembly, a rotating shaft and a magnetic force piece. The bearing assembly is fixedly arranged on the inner ring part, the rotating shaft is connected with the bearing assembly in a matched manner, and the magnetic force piece is annularly arranged on the rotating shaft. The stator assembly is connected and fixed to the clamping arms. The motor provided by the invention can stably run at high rotating speed, air speed that is formed is high, air volume is large, and manufacturing cost is controllable.

Description

technical field [0001] The embodiments of the present invention relate to the field of motors, in particular to a motor and a hair dryer. Background technique [0002] A hair dryer is an electrical appliance mainly used for drying and shaping hair, and generally consists of a set of heating wires and a small fan. When energized, the heating wire will generate heat, and the wind blown by the fan will become hot air after passing through the heating wire. If only a small fan turns, but the heating wire is not hot, then what is blowing out is cold air. The rotation of the small fan is driven by a motor. The motors used in existing hair dryers are usually brushed motors or low-speed brushless DC motors. [0003] However, the inventors found that the low-speed brushless DC motor has a low speed, and the small fan driven by it rotates to form a low wind speed and a small air volume. The brushed motor not only has the same problem as the low-speed brushless motor, but also has a...

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Problems solved by technology

[0003] However, the inventor found that the low-speed brushless DC motor has a low speed, and the small fan driven by it rotates to form a low wind speed and a small air volume. The brushed motor not only has the same problem as the low-speed brushless motor, but also has a short service life of its carbon brushes.

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