METHOD FOR PROTECTING MULTI-COILED, MULTI-LAYERED INDUCTIVE COILS FROM OVERHEATING Russian patent published in 2008 - IPC H05B6/42 H05B6/36 

FIELD: electric engineering and mechanical engineering, possible use at enterprises using inductive heating devices of low power, connected to alternating current network with voltage 220/380 V and frequency 50 Hz for heating objects up to temperature of 600°C and above; possible use in railroad transportation in heating devices used for repairs of train parts, melting of non-ferrous metals and other technological needs.

SUBSTANCE: in accordance to the invention, between multi-coiled, multi-layered inductive coil and its thermal isolation, an air slit gap is made, through which a flow of compressed air is forced, which creates an air protection screen, which prevents transfer of heat to multi-coiled, multi-layered inductive coil which penetrates thermal isolation from object being heated, which is absorbed by air flow and dispersed into atmosphere.

EFFECT: increased reliability of overheating protection of multi-coiled, multi-layered inductive coils due to increased efficiency of their cooling, ensuring simplification and cheapening of heating devices, created on basis of usage of multi-coiled, multi-layered inductive coils, connected to alternating current network supply with abovementioned parameters.

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