Air cooling structure of outer rotor electric roller

Abstract

The invention discloses an air cooling structure of an outer rotor electric roller. The air cooling structure comprises a fixed seat (27), an end cover assembly and a stator assembly, the stator assembly comprises a stator sleeve (1), an axial rib plate (4), an air deflector structure, a bearing pedestal (3), a main shaft (9) and a stator coil iron core assembly (12). The air deflector structure is connected with the axial rib plate (4) and the main shaft (9); the axial rib plate (4) is connected with the bearing seat (3), the stator sleeve (1) and the main shaft (9); air inlet and outlet ducts are distributed on the fixed seat (27); air inlets and outlets are distributed in the end cover assembly; a ventilating duct is formed outside a shaft among the stator sleeve (1), the air deflectorstructure and the axial rib plate (4); the fan at one end of the main shaft (9) sends cooling air flow into the ventilating duct through a fixing base (27) and the end cover assembly to cool a statoriron core, and then through the ventilating duct outside the shaft, the flow of the cooling air entering the stator is increased, the heat dissipation effect is enhanced, and therefore the service life of the electric roller is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of electric drive systems, and more specifically relates to an air-cooled structure of an outer rotor electric drum. Background technique [0002] The outer rotor electric drum has the advantages of simple structure, reliable operation, less loss, high efficiency, and can realize direct drive control. It is especially suitable for low-speed, high-torque applications, so it is widely used in petroleum, mining, metallurgy and steel rolling industries. When the outer rotor electric drum is working, the coil installed on the stator will generate a large amount of induction heat, which will easily lead to the aging of the motor and affect the service life of the outer rotor electric drum. In order to improve the heat dissipation capacity of the outer rotor electric drum, a reasonable cooling The system is very necessary to control the temperature rise of the outer rotor electric drum, so the equipment needs to be...

AI Technical Summary

Problems solved by technology

[0005] When the above-mentioned cooling structure drum is designed as a water-cooling structure, additional water-cooling equipment is required, and the on-site installation takes up a lot of space. Both the water-cooling equipment and pipe joints need to spend manpower and material resources for regular maintenance, and the manufacturing cost of the equipment itself is also high. At the same time, in the air-cooling technology The small air inlet of the hollow shaft hole leads to small air flow, and the distance between the shaft hole and the heating part of the motor stator is long, the heat transfer is slow, and it is difficult to dissipate heat in time. In addition, the wind resistance flowing into the stator from the shaft radial hole is relatively large, requiring high-pressure air. The installation site is often limited by conditions

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