Totally-enclosed motor with heat dissipation function

Abstract

The invention provides a totally-enclosed motor with a heat dissipation function. The motor comprises a stator component, a rotor component and two sealing end covers. The rotor component comprises arotating shaft, a rotor iron core and two rotor pressing rings. The rotating shaft, the sealing end covers and the stator component are enclosed to form a motor sealing space; the rotor iron core andthe rotor pressing rings are arranged in the motor sealing space and rotate along with the rotating shaft; internal circulation cooling air channels are arranged between the stator component and the rotor component and inside the rotor iron core, and each rotor pressing ring is provided with heat dissipation blades used for promoting hot air in the motor sealing space to flow in the internal circulation cooling air channels for cooling. The motor has the advantages that the internal cooling effect is good, and the small-size and light-weight requirements of the motor are met.

Description

technical field [0001] The invention relates to the field of motor equipment, in particular to a fully enclosed motor with heat dissipation function. Background technique [0002] As the miniaturization and weight reduction of trains has become a trend, the miniaturization and weight reduction of motors, which are important components of trains, is also imperative. The small size and light weight of the motor will increase the load capacity of the motor per unit volume, increase the heat generated per unit volume, and make the cooling structure of the motor more stringent. Especially for motors with low ground clearance, small wheel diameter and harsh operating environment, in order to prevent iron filings, water, ground garbage, etc. from entering the motor, the motor is usually a fully enclosed self-ventilated structure. The motor with fully enclosed self-ventilation structure has poor cooling performance and low efficiency compared with open structure and forced ventilat...

AI Technical Summary

Problems solved by technology

The motor with fully enclosed self-ventilation structure has poor cooling performance and low efficiency compared with open structure and forced ventilation structure

[0003] However, the cooling air of the existing fully enclosed motor cannot enter the inside of the motor to directly cool the winding and the rotor.

[0004] It makes it impossible to take away the heat generated inside the motor, resulting in high internal temperature of the motor and poor cooling performance; and the front bearing is cooled by the hot air cooling the stator, which makes the temperature of the front bearing rise and the cooling effect is poor

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