Device for injecting non-oxidizing gas into a furnace

Details Device for injecting non-oxidizing gas into a furnace Device for injecting non-oxidizing gas into a furnace

1997-03-13

1999-10-19

Hoang, Tu Ba

Industrial electric heating furnaces

Induction furnace device

Coreless

373141, 422248, H05B 622

Patent

active

059700831

ABSTRACT:
Device for injecting non-oxidizing gas into a furnace with a graphite concentrator (12) as the heating element used to heat a primary preform in the enclosure of the furnace (14) and moving relative to the furnace in its axial direction, and comprising at the inlet orifice (24) and at the outlet orifice (26) of the enclosure a respective annular injector (40, 42) for injecting two conical curtains of non-oxidizing gas, the gas for each of the curtains being directed towards the apex of the cone and in the direction away from the enclosure (14) so as to prevent any entry into the enclosure of air that could cause combustion of the graphite.

REFERENCES:
patent: 4030901 (1977-06-01), Kaiser
patent: 4142063 (1979-02-01), Boniort et al.
patent: 4174842 (1979-11-01), Partus
patent: 4321446 (1982-03-01), Ogawa et al.
patent: 4643890 (1987-02-01), Schramm
patent: 4666681 (1987-05-01), Ferrand et al.

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