Solid fuel warm air furnace
OwnerJ. Vernon Christianinventor
Life of this patent
Estimating the term…
Abstract
A solid fuel furnace which includes a housing enclosing a firebox and a heat exchanger chamber. An open grate in the firebox supports solid fuel thereon. Combustion air is admitted to the area below the grate and is preheated and passes upwardly through the grate and fuel and mixes with volatile gases released from the fuel. The air/gas mixture is drawn downwardly through the fuel and exits the firebox through an inlet to an insulated burn-out chamber which is behind the firebox. A metal screen covers the inlet and serves to ignite the air/gas mixture. Hot flue gases exit the burn-out chamber to the heat exchanger chamber.
Claims19
A furnace comprising a housing, means defining a firebox in said housing, an open grate in said firebox adapted to support solid fuel thereon, combustion air inlet means in said housing and adapted to deliver air to said firebox beneath said grate for heating and passing said combustion air upwardly through said grate and said fuel thereon and mixing said combustion air with combustible gases released from said fuel, said air inlet means also adapted to deliver air to said firebox in a direction upwardly toward said grate, an insulated burn-out chamber having an inlet located at the rear of said firebox adjacent said grate and adapted to draw the mixture of heated air and combustible gas therethrough, an outlet for said burn-out chamber, means at the burn-out chamber inlet for igniting and retention of said mixture of air and combustible gas, and heat exchanger means communicated with said burn-out chamber outlet.
Dependencies are inferred from the claim text.