Motor cooling structure based on cooling liquid

Abstract

The invention discloses a motor cooling structure based on cooling liquid. A cooler is installed at the top of a shell; a sealing hood penetrates through the inner diameter of a stator iron core to cover the stator iron core, extends into the cooler, and is isolated from the space of a rotor iron core in the shell to form a closed space; the cooling liquid is injected into the sealing hood to forma cooling liquid pool; vent pipes are located at the axial outer side of the stator iron core, and the two ends of each vent pipe are communicated with the space of the rotor iron core; several subplates are connected between the rotary shaft and the rotor iron core, and iron core axial ducts are formed by the spaces among the subplates; an air gap is formed between the rotor iron core and the inner circumferential face of the sealing hood; an inner fan is fixed to the shaft extension end of the rotary shaft, and is used for generating power airflow in a rotor circulating air path composed ofthe space of the rotor iron core, the vent pipes, the iron core axial ducts, rotor iron core radial ducts and the air gap. The motor cooling structure has a stator cooling loop and a rotor cooling loop which are independent from each other, however, both the stator cooling loop and the rotor cooling loop absorb heat through the cooling liquid, the complicated cooling structure is reduced, the using efficiency of the cooling liquid is improved, the cost is lowered, and the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of electric motors, in particular to a cooling liquid-based electric motor cooling structure. Background technique [0002] The motors used in the society now usually encounter the problem of motor heating, which is a major problem in the industry. Generally, the purpose of cooling is achieved by increasing materials and reducing motor capacity. It will directly cause the amount of copper and iron to be used far beyond the ordinary motor with the same capacity. How to solve this difficult problem in the industry, reduce the material and increase efficiency of ordinary motors, and make the cooling structure of high-tech motors based on coolant cool down and run smoothly has become the primary issue. [0003] In addition to changing the motor material and structure to achieve the purpose of cooling, the cooling method commonly used in the industry is air cooling, mainly including: [0004] 1. Open ventilati...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art, to provide a motor cooling structure based on coolant, with independent stator cooling system and rotor cooling system, to solve the existing structure based solely on air cooling technology The motor cooling structure has low heat dissipation efficiency, and it is impossible to cool the stator and rotor separately in a targeted manner.

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