| 摘要 |
PROBLEM TO BE SOLVED: To provide an induction heating apparatus capable of more uniformly heating the whole of a cylindrical metallic member.SOLUTION: Regarding the induction heating apparatus in which a cylindrical metallic member formed of a conductive metal is subjected to induction heating, a planar upper side induction heating coil and a planar lower side induction heating coil composed in such a manner that coil conductors are spirally coiled are arranged respectively by approaching both the upper and lower sides of the cylindrical metallic member, and a cylindrical inside induction heating coil composed in such a manner that a coil conductor is spirally coiled is arranged by being inserted at the inside hollow part by approaching the inner circumferential face of the cylindrical metallic member. |
