Outer rotor brushless motor heat dissipation assembly

Abstract

The invention relates to the technical field of motor heat dissipation, in particular to an outer rotor brushless motor heat dissipation assembly which comprises a motor shaft, a shell, a stator and a rotor, the left end opening and the right end opening of the shell are fixedly installed on the motor shaft through bearings, the stator is fixedly installed on the motor shaft, and the rotor is arranged on the periphery of the stator. The rotor is fixedly installed in the middle of the inner side of the shell, and a belt wheel is installed on a protruding pipe opening in the left side of the shell. Different from the prior art, according to the invention, the fan blades on the right side are improved to be electrically-driven heat dissipation fan blades, the rotating speed of the fan blades is not related to the rotating speed of the brushless motor, the fan blades are independently driven, the rotating speed of the fan blades can be adjusted according to needs to change the air inlet flow speed, and different heat dissipation effects are achieved; and according to the invention, the heat exchange pipes are arranged on the two sides of the motor shaft, and air cooling is combined, so that the air flow entering the shell is cooled, heat is directly taken away through the low-temperature air flow while cooling is conducted through heat exchange, and the heat dissipation effect of liquid cooling is greatly improved through the design mode.

Description

technical field [0001] The invention relates to the technical field of motor heat dissipation, in particular to a heat dissipation assembly of an outer rotor brushless motor. Background technique [0002] Electric motors are the power source provider for almost all electric equipment. During the working process of the existing motor, a large amount of heat is generated, and the heat can cause the temperature rise of the motor, consume more energy and cause fires. Therefore, a fan is fixed at the shaft end of the motor, and the heat generated in the motor is taken away by the synchronous rotation of the fan and the motor shaft. However, in the application process, it was found that the temperature drop of the motor was not very obvious. The reason was that although the wind blown by the fan was blowing against the motor, the blowing could not form smooth convection, which caused The heat cannot be effectively discharged, which will affect the service life of the motor and c...

AI Technical Summary

Problems solved by technology

In the present invention, the inner sides of the end covers on both sides of the motor are respectively designed as axial-flow and centrifugal fan blades, so that the heat generated by the motor is forcibly taken away by the wind flow that enters and exits the motor during the working process, ensuring the motor's stability. Effective heat dissipation, but the following problems exist in the above structure. For some low-speed high-torque motors, they also generate more heat when they work, and because of their low speed, if the heat dissipation mechanism is designed like this, the air flow generated by the fan blades will be too slow. , the heat dissipation effect is extremely poor;

[0004] Patent CN201820043887.6 discloses a DC outer rotor brushless motor liquid cooling structure, the DC outer rotor brushless motor liquid cooling structure is simple, the external power supply is connected, the rotating motor is started, and the circular turntable is driven to rotate. The connecting rod hinged on the edge of the front side wall of the turntable drives the piston to reciprocate horizontally in the hydraulic cylinder; when the piston moves to the right, the cooling water in the water tank enters the inner cavity of the hydraulic cylinder through the third connecting pipe; when the piston moves to the left, the hydraulic pressure The cooling water in the inner cavity of the cylinder pushes the ball away from the water inlet of the first spring tube, and enters the water cooling part through the water inlet pipe. The water enters the water tank through the second connecting pipe for cooling. The combination of the two, through the flow of water, the large amount of heat generated by the operation of the DC outer rotor brushless motor body greatly improves the practicability, but the rotor part is only used for heat exchange and heat dissipation by water cooling. , the heat dissipation range is small, and the heat dissipation effect is poor

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