Stoves and furnaces – Stoves – Heating
Patent
1984-07-31
1986-09-16
Yeung, James C.
Stoves and furnaces
Stoves
Heating
126 60, 126 83, F24C 114
Patent
active
046115722
ABSTRACT:
A low emission stove includes a firebox divided by an inverted baffle into a large lower primary combustion chamber, in which the solid fuel is placed, and a substantially smaller upper secondary combustion chamber. A restrictive vertical passage formed between a sidewall of the firebox and a downturned free end portion of the baffle connects the two chambers to convey combustion products produced in the lower chamber to the upper chamber before exiting from the stove. The air for the primary combustion in the lower chamber is drawn from beneath the firebox and directed upward to the firebox. The air enters the primary chamber through air inlets on multiple sides of the primary chamber, both at the fuel level and substantially above the fuel level. The combustion products produced are temporarily trapped within the primary chamber by the downturned free end portion of the baffles. A secondary air inlet near the vertical passage supplies air for secondary combustion of the combustion products within the secondary chamber, which is heated by the inverted baffle. A plurality of deflective baffles within the secondary chamber delays the passage of air and combustion products therethrough so that they may thoroughly burn before discharge from the stove.
REFERENCES:
patent: 2393855 (1946-01-01), Cheasley
patent: 3808986 (1974-05-01), Logdon
patent: 4111181 (1978-09-01), Canney
patent: 4154212 (1979-05-01), Wilkinson
patent: 4359040 (1982-11-01), Martenson
patent: 4426992 (1984-01-01), Martenson
patent: 4432335 (1984-02-01), Kilham
patent: 4461273 (1984-07-01), Barker et al.
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