Stoves and furnaces – Stoves – Heating
Patent
1979-07-18
1981-12-08
Scott, Samuel
Stoves and furnaces
Stoves
Heating
110207, F24B 500, F23B 502
Patent
active
043042147
ABSTRACT:
A system of wood combustion employing forced draft is disclosed and comprises a forced draft air and flue arrangement which is utilized with a typical wood heater or wood stove. The forced air and flue arrangement includes a blower, a plenum on which the blower is attached, a panel to which the plenum is attached having air inlets formed therethrough, the air inlets being internal to the plenum, and a flue arrangement attached to the other side of the panel. The flue arrangement includes ducts leading from the air inlets, the ducts having air nozzle slits formed on the other end thereof which are communicable with the internal portions of the wood heater or wood stove. Forced air from the blower enters the combustion chamber through the air nozzle slits. Immediately adjacent to the air nozzle slits and formed as a portion of the flue arrangement is an internal flue outlet for providing an exhaust exit for combustion gases, the flue outlet being communicable with an exhaust pipe. This forced draft air and flue arrangement provides for more complete combustion by combining secondary combustion of the excess air and unburned combustibles released during a previous primary combustion with the current primary combustion of the wood fuel thereby minimizing the amount of excess air and unburned combustibles and thereby improving the combustion efficiency of the wood stove. This is accomplished by forcing the combustion exhaust gases which are attempting to exit through the flue outlet to recirculate back into the combustion chamber. Directly adjacent locations of the air nozzle slits with the flue outlet causes this forced recirculation of the excess air and unburned combustibles generated during the primary combustion of the wood fuel.
REFERENCES:
patent: 554499 (1896-02-01), Schnigge
patent: 606667 (1898-07-01), Humphreys
patent: 3933145 (1976-01-01), Reich
Ratliff, Jr. Wesley S.
Scott Samuel
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