Stoves and furnaces – Hot-air furnaces – Feeding air
Patent
1983-02-17
1984-07-31
O'Connor, Daniel J.
Stoves and furnaces
Hot-air furnaces
Feeding air
126117, 165DIG2, 237 55, F24H 300
Patent
active
044623852
ABSTRACT:
A gas furnace is described which is of conventional design except for the means by which combustion air is supplied to the burner assembly. The gas furnace includes a cabinet having a burner assembly, heat exchanger and flue provided therein. The flue is in communication with a chimney extending upwardly from the building. An enclosure extends around the chimney and is spaced therefrom to define an air passageway. The upper end of the air passageway is in communication with the atmosphere outside of the building. Duct work connects the lower end of the air passageway with the combustion air opening formed therein so that combustion air for the burner assembly will be drawn from the outside atmosphere downwardly through the air passageway rather than from the interior of the building. As the air passes downwardly through the air passageway, the air is heated by the chimney.
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