Appartus for limiting vacuum and pressure in a furnace

Details Appartus for limiting vacuum and pressure in a furnace Appartus for limiting vacuum and pressure in a furnace

1974-10-15

1976-06-22

Wayner, William E.

Automatic temperature and humidity regulation

Furnace controlled

Furnace controlled responsive to combustion products...

110162, F23N 108

Patent

active

039646750

ABSTRACT:
A furnace system having a combustion chamber, and heat transfer surfaces, forced and induced draft fans for moving gas through the burner, chamber, and heattransfer surfaces, first controls for maintaining predetermined gas flows and furnace pressure or draft dependent upon the desired normal operating conditions, and second controls responsive to the flow of the gas exterior to the chamber, e.g., at the inlet or outlet of the induced draft fan and, if desired, at the outlet of the forced draft fan, for controlling a damper or dampers in the gas path or the speed of the fans so as to limit the vacuum which can be developed in the chamber by the induced draft fan to a value less than the chamber vacuum withstanding design value. Also, if desired, the second controls at the outlet of the forced draft fan can limit pressure which can be developed in the chamber by the forced draft fan to a value less than the chamber pressure withstanding design value.

REFERENCES:
EEI Prime Movers Committe Meeting, 4/30/73, Euchner, Jr.

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