Motor with internal circulation heat dissipation and its forming method

Abstract

The invention discloses a motor with internal circulation and heat dissipation and a forming method thereof. The method includes: forming a hot air passage for unidirectional flow of hot air formed when a rotor assembly and a stator assembly of the power supply motor are in operation in a housing chamber of the motor; A cold air channel is formed in the housing chamber for supplying the hot air and dissipating the heat carried by the hot air; the air inlet of the motor fan is connected with the air outlet of the hot air channel, and the air outlet of the fan is connected with the air inlet of the cold air channel Through, so that the hot air passage and the cold air passage communicate and form a closed internal circulation air passage located inside the motor. The motor with internal circulation heat dissipation formed by the method of the invention is stable and reliable, has strong application environment, good heat dissipation effect of the motor, and the rotor magnetic steel of the motor is not easily demagnetized.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor with internal circulation heat dissipation and a forming method thereof. Background technique [0002] The motors in the prior art usually adopt air-cooled heat dissipation, such as the motor with the prior patent No. CN203589918, which includes: the outer axial air gap, the radial air outlet holes of the stator, and the axial air passage holes of the stator jointly constitute the first One stator air passage structure; inner axial air gap, stator radial air outlet holes, and stator axial air passage holes together constitute the second stator air passage structure; axial air passage, rotor radial air outlet holes, rotor shaft The wind passing holes together form the structure of the rotor air passage. When the motor is working, the rotating shaft drives the axial flow fan to rotate, and the heat inside the motor is discharged to the outside of the machine base along the a...

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Problems solved by technology

[0003] However, in the motor with the above structure, the fan is coaxial with the rotating shaft, and the fan rotates under the drive of the rotating shaft. When the motor works at low speed, the fan has poor air extraction performance, which leads to low heat dissipation efficiency of the rotor magnet of the motor, and easily causes the rotor magnet to be damaged. Loss of magnetism affects the performance of the motor; in addition, the waterproof and explosion-proof performance of the above-mentioned motors is poor, and foreign matter such as external dust and water can easily enter the fan rotor cavity, causing the fan to stall or directly burn out

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