Stoves and furnaces – Fireplaces or accessories – Inlet air supply from outside fireplace room
Patent
1997-09-25
1999-11-09
Lazarus, Ira S.
Stoves and furnaces
Fireplaces or accessories
Inlet air supply from outside fireplace room
126500, 126518, 126533, 126521, F24B 118, F24B 1188, F23L 1183
Patent
active
059794372
ABSTRACT:
Air control apparatus for a fireplace prevents or inhibits the buildup of soot and dirt on the inside surface of the glass doors of the fireplace.
A combustion control system for a fireplace for controlling the volume and direction of air circulating through the combustion chamber of a fireplace includes an air control apparatus constructed for insertion underneath a log grate; ducts for conveying an external source of combustion air to an ash pit; an air flow valve in the conveying ducts for controlling the flow of air through the conveying ducts; a filter in the conveying ducts for preventing contaminants from entering the conveying ducts; a thermostat connected to an air flow valve which controls operation of the air flow valve; a forced air heat exchanger functionally connected to the thermostat; a temperature sensing cutoff switch near the heat exchanger; a natural gas log apparatus having a gas flow valve, a burner and ignitor, the gas flow valve and ignitor being functionally connected to said thermostat; and, a booster fan in the conveying means which is functionally connected to the thermostat.
REFERENCES:
patent: Re30725 (1981-09-01), Meeker
patent: 4026263 (1977-05-01), Boyd
patent: 4066061 (1978-01-01), Wolford
patent: 4192458 (1980-03-01), Pinnock et al.
patent: 4213445 (1980-07-01), Mayo
patent: 4338914 (1982-07-01), Braswell
patent: 4372288 (1983-02-01), Nicholas
patent: 4471756 (1984-09-01), Eberhardt
patent: 5685290 (1997-11-01), Collins et al.
A. Earley John F.
A. Earley III John F.
Lazarus Ira S.
Lee David
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