Patent ID: 6310334
Filing Date: 2001-10-30
Classification: H05B

Abstract:
A surface current heating apparatus, comprising:a plurality of hollow heat generating members each made of a ferromagnetic material and having a through-hole, said hollow heat generating members being spaced apart from each other so as to provide at least one array of said hollow heat generating members;an electrically conductive wire electrically insulated and extending through said through-hole of said each hollow heat generating member, an alternating current from a power source being applied to said electrically conductive wire, to cause a surface current to flow through a skin layer of said each hollow heat generating member which is located near an inner surface of said through-hole, whereby heat is generating from said skin layer; andat least one support tube made of a non-magnetic metal and having a bore, said at least one support tube extending through said through-hole of said each hollow heat generating member,and wherein said electrically conductive wire extends through said at least one support tube such that said electrically conductive wire has a plurality of turns each of which passes a bore of each of said at least one support tube.