evaporative cooling motor

Abstract

The invention relates to the technical field of motors, particularly provides an evaporative cooling motor, and aims to solve the problems that an existing evaporative cooling motor is uneven in heatdissipation, relatively long in axial size, relatively large in material consumption and relatively low in motor performance. The motor comprises a shell; the shell is internally provided with a firstcavity for containing a stator and a second cavity located above the first cavity; the first cavity is internally provided with a liquid cooling working medium; the motor further comprises a condensing device arranged above the second cavity; the second cavity communicates with the first cavity and the condensing device, so that the cooling working medium sequentially enters the second cavity andthe condensing device after being changed into a gas state, is condensed into a liquid state in the condensing device and then flows back to the first cavity under the action of gravity; a recessed structure is formed on the outer circumferential surface of the stator, and at least a part of the recessed structure is not opened to the inner circumferential surface of the stator. Therefore, the cooling working medium flows more smoothly, the cooling effect is good, the axial length and the material consumption of the motor are reduced, the electromagnetic performance is optimized, and the motor performance is improved.

Description

technical field [0001] The invention relates to the technical field of motors, and specifically provides an evaporative cooling motor. Background technique [0002] There are two main cooling methods for existing motors: one is air cooling, that is, a coaxial rotating fan is installed on the motor shaft or a cooling fan is added outside the motor. Exchange and take away heat to achieve cooling; the other is water cooling, the cooling water is driven by the circulating water pump to circulate between the channel in the motor casing and the outside to take away the heat of the motor to achieve cooling. However, due to the small specific heat capacity of air, the cooling efficiency of air cooling is low. The water cooling is to exchange heat between the cooling water and the housing of the motor, and cannot directly exchange heat with the heat-generating parts of the motor, so the cooling efficiency is not very high. [0003] In view of this, an evaporative cooling motor has ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of uneven heat dissipation, long axial dimension, large material consumption and low motor performance of the existing evaporative cooling motor, the present invention provides an evaporative cooling motor, The motor includes a housing, the housing has a first cavity for accommodating the stator and a second cavity above the first cavity, the first cavity has a liquid cooling medium, and the motor It also includes a condensing device arranged above the second cavity; wherein, the second cavity communicates with the first cavity and the condensing device respectively, so that the cooling working fluid enters the The second cavity and the condensing device are condensed into a liquid state in the condensing device and then flow back to the first cavity under the action of gravity; wherein, a concave structure is arranged on the outer peripheral surface of the stator, and the concave structure at least a portion of which is not opened to the inner peripheral surface of the stator

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