Heating – Work chamber having heating means – Work chamber having gaseous material supply or removal...
Patent
1973-11-20
1976-03-30
Davis, Jr., Albert W.
Heating
Work chamber having heating means
Work chamber having gaseous material supply or removal...
432 91, 165105, F27b 504, F28d 1500
Patent
active
039472442
ABSTRACT:
A vacuum furnace heats articles by radiation from a condenser portion of a heat pipe. The heat pipe further includes an adiabatic portion passing through the enclosing wall of the furnace and an evaporator portion outside the enclosure. The evaporator portion is preferably heated by a gas-fired burner which may surround it, and the heat pipe acts as a flux converter accepting heat outside the enclosure and delivering heat inside the enclosure to the articles to be heated. The condenser portion of the heat pipe may be panel-shaped and is disposed adjacent the articles to be heat-treated. In the more elaborate forms of the invention involving condenser panels, the condenser panel, or each condenser panel where several heat pipes are used, is a cylindrical section which partially, or substantially completely, surrounds the articles. The evaporator portion and the condenser portion of the heat pipe are connected by the adiabatic portion which is so arranged that heat loss is minimized at the point where the heat pipe passes through the furnace enclosure.
REFERENCES:
patent: 2237519 (1941-04-01), Bolling
patent: 2705137 (1955-03-01), Haltmeier
patent: 3160404 (1964-12-01), Potenzo et al.
patent: 3209062 (1965-09-01), Scholz
patent: 3257492 (1966-06-01), Westeren
patent: 3270250 (1966-08-01), Davis
patent: 3378449 (1968-04-01), Roberts et al.
patent: 3613774 (1971-10-01), Bliss, Jr.
patent: 3677329 (1972-07-01), Kirkpatrick
patent: 3712053 (1973-01-01), Kofink
Davis Jr. Albert W.
Neal James L.
Thermo Electron Corporation
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