Gas duct arrangement for a vacuum furnace

Details Gas duct arrangement for a vacuum furnace Gas duct arrangement for a vacuum furnace

1981-01-02

1983-08-02

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

Houses, kilns, and containers

432 77, 34 66, F26B 1710

Patent

active

043958320

ABSTRACT:
The present invention is a duct arrangement for use with a vacuum furnace to permit inert gas to be supplied continuously to the hot zone enclosure of a vacuum furnace. The novel duct arrangement includes a plenum means that, in the preferred embodiment, is formed so that its inside wall is the outer wall of the hot zone enclosure and which is disposed to be wrapped around 95% of the hot zone enclosure (within the vacuum chamber) with which it is employed. The plenum is sealed at both ends and is formed to have a plurality of holes in the common wall of the hot zone enclosure and the plenum. Into each of said holes there is fitted a removable nozzle member. A relatively large hole is formed in the outside wall of the plenum to permit inert gas to be fed into the plenum and through the nozzles into the hot zone enclosure to cool the work piece therein.

REFERENCES:
patent: 55061 (1866-05-01), Clement
patent: 1698313 (1929-01-01), Luther
patent: 2132709 (1938-10-01), Vanderwerp
patent: 3222800 (1965-12-01), Siegel et al.
patent: 3309835 (1967-03-01), Peppler
patent: 3805408 (1974-04-01), Shadley
patent: 4259088 (1981-03-01), Moss

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