Furnaces – Combined
Patent
1991-10-17
1992-07-28
Favors, Edward G.
Furnaces
Combined
110110, 110297, 126 58, 126200, F23B 700
Patent
active
051332663
ABSTRACT:
A pellet burning heating device (20) designed to operate at a combustion efficiency of about 90-98% (based on the carbon derived combustion efficiency formula), and to emit exhaust gases having a carbon monoxide concentration, by volume, of about 0.04% or less, which device does not incorporate a fan system for introducing combustion air into, or extracting exhaust gases from, the stove. High combustion efficiency and clean burning are accomplished by providing a plurality of apertures (130, 132) in the burn pot (120) of the device having a predetermined size, number, and placement. More specifically, the total area of the apertures in the bottom wall (122) and portions of the sidewall (124) at or below the pellet level (134) in the burn pot is equal to the total area of the apertures in the sidewall positioned above the pellet level. The pellet level refers to the position of the top surface of the pellets positioned in the burn pot when the device is coupled with a chimney having a predetermined draft and when pellets are fed into the burn pot at a predetermined feed rate.
REFERENCES:
patent: 4017254 (1977-04-01), Jones
patent: 4593629 (1986-06-01), Pedersen et al.
patent: 4941414 (1990-07-01), Carlson
patent: 5001993 (1991-03-01), Gramlow
patent: 5070798 (1991-12-01), Jurgens
Favors Edward G.
Mountain Home Development Company
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