High frequency heating device with flexible coil

Details High frequency heating device with flexible coil High frequency heating device with flexible coil

H - Electricity

05

B

H05B 6/36 (2006.01) B23K 13/01 (2006.01) H05B 6/38 (2006.01)

Patent

CA 2253139

High frequency heating coil device having sufficient flexibility and heating effect is provided. Coils 2 are contained in outer jacket 1. Coils 2 are made of tube of steel, copper or brass which is annealed sufficiently to be given flexibility. Plural pieces of magnetic substance are arranged in series between the coils 2. Flexible spacer 9 is arranged between the magnetic substance 10 and the coils 2. Upper and lower end faces of each piece of the magnetic substance 10, making direct contact with each other between adjacent pieces, are made in curved faces a. Heating coil device so constructed is inserted into hole of object to be heated and high frequency current is supplied to the coils 2 from electric source 6 to thereby generate eddy current in inner surface of the hole to heat the object. The heating coil device, while being bent to avoid obstruction, can be inserted into, and drawn out of, the hole.

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