Honeycomb-type closed ventilation cooling device for motor

Abstract

The invention provides a honeycomb-type closed ventilation cooling device for a motor. The scheme of the invention is that the back of a stator yoke of the motor is provided with axial vent holes in the peripheral direction; the axial vent holes are separated from a stator winding of the motor; stainless steel circular pipes are inserted into the axial vent holes; two ends of an axial ventilation pipe are fixedly connected with a round plate; a part, above the round plate, of a case is provided with a vent hole. The axial vent holes are uniformly arranged in the peripheral direction. The device provided by the invention is simple in structure, improves the ventilation cooling effect of the motor, and improves the capability of safety and stable operation of the motor. The device can cool a stator yoke back iron core and a linear winding, also can cool a stator terminal winding and a rotor core, can effectively improve the cooling effect of the stator yoke back iron core and the winding, also can enable the terminal winding to be isolated from the outside, and protects the terminal winding from being damaged by an environment.

Description

technical field [0001] The invention relates to the technical field of motor cooling, in particular to a honeycomb type airtight ventilation cooling device for a motor. Background technique [0002] At present, the motors used in many fields such as high-speed rail and rail transit are affected by natural conditions such as wind, sand, dust, rain and fog. Traditional cooling methods are not only difficult to meet the cooling requirements of the motor, but may also increase the temperature of the motor. , short circuit and other faults, especially for permanent magnet traction motors, the above factors may lead to partial demagnetization of the permanent magnets. Therefore, the study of high-efficiency ventilation and cooling systems is not only related to the operating life of the motor, but also related to the operating safety of the train. [0003] In the traditional open ventilation cooling structure, the end winding is affected by natural conditions such as wind, sand a...

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Problems solved by technology

[0003] In the traditional open ventilation cooling structure, the end winding is affected by natural conditions such as wind, sand and moisture, which makes the end damp and the insulation resistance decreases, resulting in short circuit of the winding and even burning the motor; while the traditional closed ventilation cooling structure is due to permanent magnets and end windings. If the winding is not cooled effectively, the temperature of the end winding and the permanent magnet will be too high, and the end winding may be burned due to excessive temperature, and the permanent magnet is extremely sensitive to temperature. Excessive temperature can easily cause local failure of the permanent magnet. magnetism, causing damage to the motor

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