Channel induction furnace bushing cap cooling device

Details Channel induction furnace bushing cap cooling device Channel induction furnace bushing cap cooling device

1991-12-06

1993-06-22

Reynolds, Bruce A.

Industrial electric heating furnaces

Induction furnace device

Core-type

373160, 373161, 373165, 75 1014, H05B 616

Patent

active

052220974

ABSTRACT:
A bushing cap used to close a gap in a liquid cooled bushing which surrounds a coil contained in a channel induction furnace. The coil, bushing and bushing cap is further surrounded by a thin refractory layer which is further surrounded by a molten metal loop. The bushing cap and bushing are liquid cooled to maintain a substantial uniform thermal gradient about the thin refractory layer surrounding the bushing and bushing cap. Preferably, this is accomplished by way of a bushing cap having a cooling member attached to a cover and mounted within the bushing gap. A cooling fluid is passed through both the cooling member of the bushing cap and cooling channels within the bushing to maintain a substantial uniform thermal gradient about the thin refractory layer.

REFERENCES:
patent: 2473311 (1949-06-01), Tama et al.
patent: 2993943 (1961-07-01), Cooke
patent: 3297811 (1967-01-01), Kugler
patent: 4101726 (1978-07-01), Griffiths

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