High temperature convection furnace
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United States of America Patent
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-
Jan 2, 1990
Grant Date -
N/A
app pub date -
May 21, 1986
filing date -
May 21, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel fired heat treating furnace having an imperforate inner shell for containing a work load in isolation. The shell is made of a refractory material which provides a good heat exchange from the outside to the inside. A multiplicity of hot gas streams is directed under pressure against the outside of the shell by means of a circulation system which includes a plenum, a fan within the plenum and a plurality of apertured distributor tubes extending from one end of the shell to the other. Fuel burners exhaust combustion gases into the system on the discharge side of the fan where the gases mix with returning gases from the intake side of the fan and are fed into the distributor tubes.
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