Heat exchanger construction for solid fuel burning furnace

Details Heat exchanger construction for solid fuel burning furnace Heat exchanger construction for solid fuel burning furnace

1980-04-07

1982-01-26

Scott, Samuel

Stoves and furnaces

Hot-air furnaces

Air baffles

126110R, F24H 300

Patent

active

043123210

ABSTRACT:
A heat exchanger construction for use in a solid fuel burning heating system. A plurality of tubular members are provided for receiving hot, smoke laden gases and directing said gases through the zone in which clean, forced air to be heated is present. The tubes are supported between two parallel, spaced apart support plates having apertures formed therethrough for receiving opposed ends of the tubes. A clean-out box is provided at one end of the heat exchanger tubes and because a predetermined spacing is maintained between the rear surface of the clean-out box and one of the two support plates, it is possible to utilize an inexpensive tack weld to hold the parts in place, rather than a 360.degree. welded seam between the tubes and the support plate through which they pass. That is, the pressure differentials resulting from the construction ensure that no smoke laden gases will enter the clean air zone, even upon occurrence of pressure reversals in the chimney flue, thereby obviating the necessity of a totally welded seal between the heat exchanger tubes and the support plate and clean-out box through which the tubes pass.

REFERENCES:
patent: 92822 (1869-07-01), Hart
patent: 726374 (1903-04-01), Thompson
patent: 2309356 (1943-01-01), Peterson
patent: 3813039 (1974-05-01), Wells
patent: 4201187 (1980-05-01), Skow
patent: 4204518 (1980-05-01), Smith

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