High frequency heating coil device

Details High frequency heating coil device High frequency heating coil device

1998-11-05

2000-07-25

Paschall, Mark

Electric heating

Inductive heating

Specific heating application

219643, H05B 638

Patent

active

060939176

ABSTRACT:
A high frequency heating coil device having sufficient flexibility and heating ability is provided. Coils 2 are contained in outer jacket 1. The coils 2 are made of steel, copper or brass tubing which is annealed sufficiently to be flexible. Plural pieces of magnetic substance 10 are arranged in series between the coils 2. Flexible spacer 9 is arranged between a magnetic substance 10 and the coils 2. Upper and lower end faces of each piece of the magnetic substance 10, make direct contact with other adjacent pieces, and are made with curved faces a. Heating coil device is so constructed that when inserted into a hole of an object to be heated and high frequency current is supplied to the coils to the coils 2 from electric source 6, eddy currents are generated in an inner surface of the hole in order to heat the object. The heating coil device, while being bent to avoid obstructions, can still be inserted into and drawn out of the hole.

REFERENCES:
patent: 4590347 (1986-05-01), Thatcher et al.
patent: 5053593 (1991-10-01), Iguchi
patent: 5397876 (1995-03-01), Shimamoto et al.
patent: 5523546 (1996-06-01), Lake

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