Iron-core-provided self-circulating evaporating cooling disk-type motor

Abstract

Disclosed is an iron-core-provided self-circulating evaporating cooling disk-type motor. A stator of the motor is composed of a stator iron core (1), a stator coil (2), an enclosure (6) and a sealing disk (7). A rotor is composed of a bearing (8), a shaft (9), a rotor iron core (10) and magnetic steel (11). An evaporating cooling system is composed of a condenser (3), a steam inlet pipe (4), a liquid return pipe (5), a stator cavity (13) and evaporating cooling media (12). The enclosure (6) and the sealing disk (7) form the stator cavity (13) and the stator cavity (13) is filled with the evaporating cooling media (12). When the disk-type motor runs, heat generated by the stator iron core (1) and the stator coil (2) due to losses is transmitted to the evaporating cooling media (12), so that the temperature of the evaporating cooling media rises, the evaporating cooling media are gasified, phase-change heat absorption is generated, and the evaporating cooling media enter the condenser (3) through the steam inlet pipe (4) to be cooled and become liquid and then flow back into the stator cavity (13) through the liquid return pipe (5). Thus, the self-circulating evaporating cooling system without external force driving is formed.

Description

technical field [0001] The invention relates to a high-power-density and high-power disc motor adopting evaporative cooling technology. Background technique [0002] The air gap of the disc motor is planar, and the air gap magnetic field is distributed along the axial direction, also known as the axial magnetic field motor. The disc motor has high power density, small size, compact structure, high efficiency, large radius and shaft length ratio, and is very suitable for high-torque applications; the stator and rotor are all disc structures, and can be designed as a multi-disk structure , It is convenient to increase the power of the motor; the stator and rotor of the motor are parallel to each other, and the distance between the stator and rotor can be adjusted to adjust the air gap magnetic density and so on. Compared with radial motors, disc motors have a relatively large air gap and multi-air gap structure, and it is generally believed that disc motors have better coolin...

AI Technical Summary

Problems solved by technology

The cooling methods of high power density disc motors mainly include forced air cooling and water cooling. Forced air cooling disc motors require an external fan, and the flow direction of the wind must be parallel to the stator winding, which is difficult to implement for the closed structure of disc motors.

High-power-density disk motors are cooled by water-cooling methods, which require water pumps to provide external circulation power. The operating pressure is high, and additional deionization equipment must be equipped, which increases the cost of the system. At the same time, there is a problem of antifreeze in winter. Antifreeze needs to be added, and the circulation system requires special equipment. Material processing increases the cost; in addition, the cooling water has poor insulation and cannot directly contact the energized stator windings. The heat generated by the loss of the stator windings can only be transferred to the cooling water through heat conduction to take away the heat, making the water cooling effect general. , the cooling water cannot be in direct contact with the stator windings, and effective measures must be taken to prevent leakage and corrosion

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