A commutator cooling device

Abstract

The invention discloses a commutator cooling device, comprsing an insulating washer, wherein the insulating washer is added with a circle of fan structure along the external circumferential surface of the insulating washer; the fan structure includes a plurality of fans and heat vents; the plurality of fans are evenly distributed on the external circumferential surface of the insulating washer; the heat vents are formed between adjacent fans; the external sides of the plurality of fans are connected into a circle; each blade of the fans has an arc-shaped top surface and a wave-shaped bottom surface, and a chamfered surface is arranged for transition between the top surface and the bottom surface. According to the invention, since the top surface of each blade of the fans is arranged to be arc-shaped and the bottom surface is arranged to be wave-shaped, when chilling shrink happens, the arc-shaped surfaces can absorb part of deformation and the wave-shaped bottom surfaces enable the fans to reset rapidly at the same time, which functions as springs, so that the blades of the fans can reset rapidly in the case of deformation, thus effectively improving the dust blocking performance of the fans.

Description

technical field [0001] The invention relates to the field of commutators, in particular to a commutator cooling device. Background technique [0002] The rotor rotates in the stator. In the prior art, a commutator is installed at one end of the rotor, and a fan is installed at the other end of the rotor. Although the setting of the fan can reduce the temperature inside the stator, the temperature at the commutator end is still high, and some dust particles Erosion of the motor commutator and the surface of the wire package reduces the service life, so now some commutators will add a fan structure on the outer ring to cool down and block dust. However, due to temperature changes thereon, the blades of the fan often have gaps between the blades due to cold shrinkage, thereby reducing the blocking performance for dust. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a commutator cooling device that can effecti...

AI Technical Summary

Problems solved by technology

[0002] The rotor rotates inside the stator. In the prior art, a commutator is installed at one end of the rotor, and a fan is installed at the other end of the rotor. Although the setting of the fan can reduce the temperature inside the stator, the temperature at the commutator end is still high, and some dust particles Erosion of the motor commutator and the surface of the wire package reduces the service life, so now some commutators will add a fan structure on the outer ring to cool down and block dust

However, due to the temperature change on it, the blades of the fan often have gaps between the blades due to cold shrinkage, thereby reducing the blocking performance for dust.

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