Stoves and furnaces – Liquid heater
Patent
1981-03-11
1982-10-12
Capossela, Ronald C.
Stoves and furnaces
Liquid heater
165109T, 165175, 237 51, F24B 700
Patent
active
043533507
ABSTRACT:
A fireplace heat exchanger is disclosed comprising a spacer frame assembly adapted to provide a frame for surrounding the open front of a fireplace opening, and a heat exchanger assembly in communication with said frame assembly. The heat exchanger assembly comprises a pair of laterally-spaced horizontal manifold tubes, and a plurality of horizontally-extending parallel heat exchanger or convection tubes interconnecting said manifold tubes, said convection tubes having opposite sides thereof indented, with the indentations of each tube facing the indentations of adjacent tubes to thereby form substantially circular flues for the escape of smoke vertically therethrough. Means are provided, for removably securing the heat exchanger assembly, at an elevated position to the side walls of the fireplace, and for removably securing the spacer frame assembly to walls surrounding the front of the fireplace. Each of the convection tubes contains a spiral strip or element which is designed to increase the heat transfer area and direct the air in spiral flow extending the time the air is in the tubes.
REFERENCES:
patent: 1852490 (1932-04-01), Sullivan
patent: 2343542 (1944-03-01), Faunce
patent: 2882023 (1959-04-01), Rizzo
patent: 4018209 (1977-04-01), Bonvicini
patent: 4122824 (1978-10-01), Borgran
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