Stoves and furnaces – Fireplaces or accessories – Inlet air supply from outside fireplace room
Patent
1989-10-27
1991-05-14
Jones, Larry
Stoves and furnaces
Fireplaces or accessories
Inlet air supply from outside fireplace room
126517, 126518, 126540, 126163R, 126163A, F24B 1189
Patent
active
050146831
ABSTRACT:
A fireplace combustion system in which a sealed firebox contains: a base having apertures connected to a source of combustion air and wherein a hollow grate is connected to one of the apertures to conduct combustion air to a quantity of fuel disposed on the grate; a plurality of baffles and deflectors are utilized to direct the products of combustion above the grate for flow through a quantity of porous refractory material so that the refractory material is heated by the products of combustion to a temperature sufficient to ignite the unburned gases present; and a flue for exhausting the products of combustion. The grate is provided with a plurality of apertures at various levels above the bottom to supply combustion air at varying temperatures at different locations in the burning fuel. Suitable valve means are used to control the amount and direction of the air flow through the apertures in the base to different primary and secondary burning zones in the firebox.
REFERENCES:
patent: 4173967 (1979-11-01), Brown
patent: 4350139 (1982-09-01), Robichaud
patent: 4362146 (1982-12-01), Schuller
patent: 4392477 (1983-07-01), Milligan
Jones Larry
Sturm Warren A.
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