Alternating-current input brushless direct-current motor for fan

Abstract

The invention discloses an alternating-current input brushless direct-current motor for a fan and belongs to the technical field of motors. The alternating-current input brushless direct-current motor comprises a stator, a rotor, a circuit board and a motor shell, wherein the motor shell comprises a front end cover and a back end cover; the stator, the rotor and the circuit board are arranged in the motor shell; the circuit board is used for providing electric drive and control for the brushless direct-current motor; the circuit board is connected with an external power line; a rectifying circuit and a driving circuit are arranged on the circuit board. The alternating-current input brushless direct-current motor for the fan is simple in structure, low in material consumption, low in production cost, convenient to process and favorable for environmental protection; the driving circuit comprises a distributor, only two field-effect tubes and a Hall sensor, and is combined with a capacitor C1 to regulate power and adjust rotation speed; the driving circuit is energy-saving and lower in price, and the aims of saving energy and reducing emission are fulfilled.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to an AC input brushless DC motor for a fan. Background technique [0002] With the increasingly tense global energy supply and the deteriorating climate and environment, energy issues have increasingly become a bottleneck restricting social development, and electricity shortage has become a global problem. In China in recent years, when the power consumption peaks in summer, some urban areas have to take measures to cut power, and even some industrial areas have to cut power, which will seriously affect industrial production. Therefore, energy conservation and emission reduction are imperative. Row. Due to the low energy utilization rate in our country, the energy consumption of output value is higher than the world average level. High energy consumption and low efficiency are one of the main reasons for the current energy shortage in our country. In the research on the motor ...

AI Technical Summary

Problems solved by technology

The cast aluminum rotor of the shaded pole motor needs to consume a certain amount of electric energy, and the short-circuit copper ring for the starting function of the motor needs to consume a certain amount of electric energy, which consumes a lot of power.

[0003] In response to the above problems, the applicant applied for a patent number: ZL201220405259.0 on August 16, 2012, named: a patent for a combined motor stator structure; on August 16, 2012, he also applied for a patent The number is ZL 201220405257.1, and the name is a patent for a motor bearing seal sleeve, which is specially used under the conditions of high dustproof and waterproof requirements for motors; through these two patents, the problems of many materials and high costs for motors are solved. At present, some manufacturers have developed and Some trial productions use AC brushless DC motors as the power to drive fans, but the drive circuit of this motor has a relatively complicated structure and high cost, about 100-120 yuan / set, and the circuit is basically imitation foreign products

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