Furnace
AssigneeFire Chief Industries LLC
InventorsDanny N. Haynes, Gregory A. Miller
Life of this patent
Estimating the term…
Abstract
A furnace including a combustion chamber for burning fuel can have increased fuel burning efficiency, increased heating efficiency, and decreased harmful emissions of combustion byproducts. A combustion air delivery system delivers primary and secondary combustion air to the combustion chamber. Primary and secondary combustion air may be delivered at amounts that increase burning efficiency. An amount of secondary combustion air can be controlled by a valve system. A heat transfer device efficiently transfers heat from products of combustion for heating an enclosed space.
Claims29
A forced-air furnace for heating a space, the furnace comprising:
- a housing having a top, bottom, front, rear, and opposite sides,
- a firebox in the housing having a combustion chamber adapted for receiving fuel to be combusted for producing products of combustion, and
- a combustion air delivery system for delivering combustion air to the combustion chamber, the combustion air delivery system including:
- a primary combustion air passage including a primary combustion air outlet in the combustion chamber for delivering primary combustion air to the combustion chamber,
- a secondary combustion air passage including a secondary combustion air outlet positioned in the combustion chamber for delivering secondary combustion air to the combustion chamber, and
- a valve system in fluid communication with the secondary combustion air passage configured for changing the amount of secondary combustion air delivered to the combustion chamber in response to combustion chamber temperature.
(canceled)
(canceled)
18-26. (canceled)
28-32. (canceled)
(canceled)
A forced-air furnace for heating a space, the furnace comprising:
- a housing having a top, bottom, front, rear, and opposite sides,
- a firebox in the housing having a combustion chamber adapted for receiving fuel to be combusted for producing products of combustion, the combustion chamber having an exit for permitting products of combustion to exit the combustion chamber, and
- a combustion air delivery system for delivering combustion air to the combustion chamber, the combustion air delivery system including:
- a primary combustion air passage including at least one primary combustion air outlet in the combustion chamber for delivering primary combustion air to the combustion chamber, and
- a secondary combustion air passage including a secondary combustion air outlet positioned in the combustion chamber for delivering secondary combustion air to the combustion chamber,
- wherein the combustion chamber exit is positioned adjacent a first end of the combustion chamber, and the primary combustion air outlet is positioned adjacent the first end of the combustion chamber lower than the combustion chamber exit, the primary combustion air outlet being configured for directing primary combustion air therefrom toward a second end of the combustion chamber opposite the first end.
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.