Induction heater for unwinding motor stators

Abstract

The invention relates to an induction heater for unwinding motor stators. The induction heater comprises a heating control device connected with a high-frequency power generator, the high-frequency power generator is connected with a power-frequency power supply, high-frequency power outputted by the high-frequency power generator is connected with induction coils wound on fixed silicon steel cores, movable silicon steel cores are placed on the two columnar fixed silicon steel cores, an equipment seat is arranged below the fixed silicon steel cores, a supporting surface is arranged on the equipment seat, and temperature measurement elements are arranged on two sides of the fixed silicon steel cores for placing the motor stators and connected with the heating control device through leads. Heating time can be controlled, and a heating environment is safe. According to information feedback of the temperature measurement elements, when the set heating temperature is reached, the heating control device automatically cuts off a heating power supply and gives an alarm to inform workers of finishing heating of the stators. The induction heater is controllable in temperature, uniform in heating and free from contamination.

Description

technical field [0001] The invention relates to an induction heater for dismantling the stator of a motor, which is specially used in the motor repair and repair industry. When the motor stator coil to be repaired is removed, the motor stator needs to be heated. Background technique [0002] With the increasing degree of industrialization, motors are used as power equipment for production, and the scale of use is increasing, and the corresponding motor repair industry has also developed rapidly. During the repair process of the motor, the removal of the old stator coil is the most demanding and difficult task. Because the stator coil impregnated with insulating varnish is tightly embedded in the stator slot, and needs to be heated to soften the insulating varnish before the wire can be pulled out from the stator slot. The traditional method generally adopts the method of heating by fire, but this method has many disadvantages. First of all, the temperature is not easy to c...

AI Technical Summary

Problems solved by technology

First of all, the temperature is not easy to control. Once it is too high, it will cause great damage to the iron core silicon steel sheet; secondly, the heating is uneven, and the local temperature is already too high, but the local insulating paint has not softened; medium, and will also ignite the insulating varnish, producing a lot of smoke and pungent smell

It is not advisable to use the drying room heating method, the heating time is long, and the electricity cost is high

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