Energy efficient furnace with movable end wall

Details Energy efficient furnace with movable end wall Energy efficient furnace with movable end wall

1980-05-07

1982-09-07

Roskoski, Bernard

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

148189, 118 501, F27B 514, F27D 1900

Patent

active

043485804

ABSTRACT:
A tubular furnace, such as a diffusion furnace, having a temperature controlled central region bounded by end walls heated to the temperature of the central region, at least one of said end walls being movable to and from the outer edge of said central region. By means of a temperature-sensing feed-back circuit, the entire temperature controlled region can be maintained at a predetermined isothermal condition, or a temperature gradient can be maintained by heating one of the end walls to a specified higher temperature and heating the other to a specified lower temperature. A combustor, for example for an exothermic chemical reaction, can be located within a guard heater adjacent one of the end walls.

REFERENCES:
patent: 3299196 (1967-01-01), Lasch, Jr.
patent: 3311694 (1967-03-01), Lasch, Jr.
patent: 3370120 (1968-02-01), Lasch, Jr.
patent: 3387078 (1968-06-01), Montgomery, Jr. et al.
patent: 3554162 (1971-01-01), Cota
patent: 3573116 (1971-03-01), Cohen
patent: 3578495 (1971-05-01), Pammer et al.
patent: 3852128 (1974-12-01), Kreuzer
patent: 3852129 (1974-12-01), Diguet
patent: 4061870 (1977-12-01), Mizushina

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