Liquid cooling motor and flow control method

Abstract

The invention discloses a liquid cooling motor. The motor comprises an outer shell which is a hollow first cylinder, and the cylinder wall of the first cylinder being provided with a liquid inlet anda liquid outlet; a cooling shell, being a second cylinder with the hollow interior, the second cylinder being located in the first cylinder, a cooling water channel being formed in the outer wall of the second cylinder, the cooling water channel extending to the position, corresponding to the liquid outlet, of the second cylinder from the position, corresponding to the liquid inlet, of the secondcylinder, and a motor stator being arranged in the second cylinder; a flow adjusting assembly, comprising an adjusting valve, a temperature sensor and a controller, the adjusting valve being used foradjusting the flow of cooling liquid entering the motor, and the temperature sensor being used for detecting the temperature of a motor stator. The controller adjusts the opening degree of the adjusting valve according to the temperature detected by the temperature sensor to control the flow of the cooling liquid entering the motor. According to the liquid-cooled motor, self-adjustment of the flowof the motor cooling liquid can be realized, the temperature rise of the motor is uniform, the stability is improved, and the structure is simple.

Description

technical field [0001] The invention belongs to the technical field of liquid-cooled motors, and in particular relates to a flow control method for a liquid-cooled motor meter. Background technique [0002] As the requirements for motor applications become more and more stringent, the power density of motors continues to increase, causing serious problems with motor heating. More motors use external cooling methods. For existing liquid-cooled motors, the cooling structure is fixed, and the cooling flow rate fixed. For motors used in high-precision occasions such as machine tools, the temperature rise of the motor is required to be stable, and the existing coolant flow rate is fixed, resulting in low temperature rise of the motor at low load and high temperature rise at high load, which seriously affects the thermal deformation. The running accuracy of the motor and other performances are improved. [0003] Although the solution mentioned in the existing patent CN106374681A...

AI Technical Summary

Problems solved by technology

[0002] As the requirements for motor applications become more and more stringent, the power density of motors continues to increase, causing serious problems with motor heating. More motors use external cooling methods. For existing liquid-cooled motors, the cooling structure is fixed, and the cooling flow rate fixed

For motors used in high-precision occasions such as machine tools, the temperature rise of the motor is required to be stable, and the existing coolant flow rate is fixed, resulting in low temperature rise of the motor at low load and high temperature rise at high load, which seriously affects the thermal deformation. The running accuracy of the motor and other performance

[0003] Although the solution mentioned in the existing patent CN106374681A can realize the adjustment of the motor coolant flow, it needs to add an external electric pump, and at the same time requires the linkage control of the motor controller and the electric pump. For most current applications such as machine tools , each part is required to be compact in structure, and the external parts should be reduced as much as possible. This implementation has obvious disadvantages

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