COOLING STRUCTURE OF INDUCTION HEATING FURNACE

摘要

PROBLEM TO BE SOLVED: To provide a water-cooled heat insulation structure of an induction heating furnace in which the temperature of an induction heating coil is made to be kept in a low-temperature as far as possible by installing a water-cooled heat insulation layer between an electromagnetic induction heating furnace and the induction heating coil. SOLUTION: A heat-resistant heat insulating material layer 5 is installed at an outside of a furnace body 2, and the water-cooled heat insulation layer consisting of water-cooled tubes 7 is formed between the heat insulating material layer 5 and the induction heating coil 11, and the water-cooled tubes 7 are made of metal tubes and pipes which are connected with a cooling water inlet 8 and a cooling water outlet 9 of the water-cooled tubes 7 are made of rubber or resin, and an electrically closed circuit is made not to be formed by the metal part of the water-cooled tube.