Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent
1979-05-30
1981-04-28
Yeung, James C.
Stoves and furnaces
Hot-air furnaces
Liquid or gaseous fuel
126 15A, 126 99R, 126110R, 126111, 165DIG2, 237 55, 431 18, F24H 300, F24B 500
Patent
active
042638879
ABSTRACT:
A refractory lined firebox is encased in a low profile furnace shell of generally rectangular configuration. Mounted on top of the firebox within the furnace shell is a heat exchanger which provides alternating passageways at right angles to one another through which flue gas and air to be heated flow in heat exchange relationship. The heat exchanger and firebox are so related that the axes of the passageways are inclined from the horizontal and the flow through them is generally upward as well as lateral. The furnace includes special combustion air ducts for use in combustion of the solid fuel. The furnace is also equipped with a back-up liquid fuel burner and a control system which activates and operates the liquid fuel burner in response to total consumption or burn out of the solid fuel in the firebox.
REFERENCES:
patent: 1825498 (1931-09-01), Wogan
patent: 2578927 (1951-12-01), Esson
patent: 2806676 (1957-09-01), Frenkel
patent: 2828947 (1958-04-01), Hedbom
patent: 2988336 (1961-06-01), Woolard
patent: 3169516 (1965-02-01), Agnese
patent: 4078541 (1978-03-01), Roycraft
patent: 4130105 (1978-12-01), Melton
patent: 4141335 (1979-02-01), Wright
patent: 4147303 (1979-04-01), Talucci
patent: 4202318 (1980-05-01), Depopesta
O'Connor Daniel J.
Yeung James C.
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