Stoves and furnaces – Liquid heater
Patent
1975-10-15
1976-06-29
O'Dea, William F.
Stoves and furnaces
Liquid heater
126140, 237 51, F24B 700
Patent
active
039658864
ABSTRACT:
This invention is designed to increase the heating efficiency of an existing conventional fireplace. The device consists of a hollow metal air conveying channel which is designed to fit closely against the multiple inside walls of an existing fireplace in combination with a hollow metal guide vane that connects the upper inside portions of the side arms of the air channel. The guide vane is triangular in cross section with the two lower sides surrounded by a V shaped metal plate, being spaced therefrom and thus forming an exhaust heat extraction channel which, in conjunction with a control damper, can force the hot fire gases to flow along these vane surfaces to transfer additional heat to the room air passing through the vane. The vane and V shaped exhaust channel assembly is positioned so as to form a hot gas passageway between the rear surface of the assembly and the upper portion of the center panel of the three sided air channel. An outer metal front closure is attached to the inner air channel subassembly, having two pairs of hinged doors providing for control of air input to fire, increased efficiency and maximum safety during untended periods of operation. The channel and vane are heated by the fire and room air is forced to make multiple horizontal passes through the fireplace heating channel and one pass through the guide vane by a blower. The heated room air being vented back into room. The device is readily insertible in an existing fireplace structure and does not interfere with its normal functioning. Because of this feature the device is compatible with a broad range of existing fireplace sizes and types.
REFERENCES:
patent: 32283 (1861-05-01), Gauson et al.
patent: 1377108 (1921-05-01), Williams
patent: 1488195 (1924-03-01), Dawson
patent: 2052643 (1930-09-01), Modine
patent: 2359197 (1944-04-01), Brooks
patent: 2362526 (1944-11-01), Austin
patent: 3190282 (1965-06-01), Bauer
patent: 3762391 (1973-10-01), Andrews
Capossela Ronald C.
O'Dea William F.
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