HEATING COIL FOR INDUCTION HEATING DEVICE

摘要

PROBLEM TO BE SOLVED: To realize an inexpensive heating coil wherein the constitution is simple and a loss can be reduced, and provide a small-sized and a low cost induction heating device. SOLUTION: An electric conductor 12 is spirally wound and an electrical insulating material 13 and by the fact that a magnetic permeability exceeds one is installed between the electrical conductor, a high-frequency magnetic field generated by a heating coil is selectively concentrated on the electrical insulating material 13, by which a proximity effect generated between the electrical conductor 12 is greatly reduced and distribution of a high-frequency electric current flowing in the electric conductor 12 is homogenized, so that the loss reduction is aimed at and this is made to be the inexpensive induction heating device of a simple constitution.