Furnace for heat treatment in vacuo with cooling by a stream of gas
AssigneeFours Industriels B.M.I.
InventorBernard Jomain
Life of this patent
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Abstract
A furnace for heat treatment in vacuo with cooling by a stream of gas wherein there is a rotating volute mounted between a heat enclosure and a turbine and wherein the rotating volute is in the form of a helical flange arranged on the outside of a hollow cylinder through which gas is directed from the enclosure to the turbine and which volute also includes a gas outlet deflector associated with the helical flange through which gas may be directed toward the heat enclosure.
Claims6
In a furnace for heat treating articles and in which includes a housing, an enclosure mounted within the housing in which articles are placed, a turbine rotatably mounted within the housing for circulating gas relative to a heat exchanger also mounted within the housing and the enclosure, the improvement comprising an air deflection volute means mounted within said housing between the enclosure and the turbine so that air passing between the enclosure and the turbine passes therethrough, drive means for rotating said volute means within the housing, a plurality of openings into the enclosure through which gas is circulated relative to articles placed therein, said volute means including a gas inlet and gas outlet portions for directing gas to the turbine and from the turbine toward the enclosure respectively, said gas outlet portion being reoriented with respect to the enclosure as said volute means is rotated to thereby continuously alter the direction of gas flow relative to the articles in the enclosure.
Dependencies are inferred from the claim text.