Patent ID: 8257644

Claim:
An iron core annealing furnace for annealing amorphous iron cores, which comprises a furnace body constituting an outer wall; an inner partition wall being arranged inside the outer wall; louvers disposed in the partition wall at a plurality of positions; a heat source; and a fan, both the heat source and the fan being disposed in a top section of the furnace body, wherein the inner partition wall defines a furnace interior, the inner partition wall and the outer wall form a double space structure so as to define a space between the inner partition wall and the outer wall, and the fan is positioned at the center of the top section, and wherein the fan draws hot gas from the furnace interior and feeds it into the space between the inner partition wall and the outer wall so as to flow into the furnace interior through a lower section of the furnace body and so as to be able to flow into the furnace interior through the louvers to heat an iron core in the furnace interior thereby circulating the hot gas.