Patent ID: 7967008

Claim:
A fireplace system comprising: a fireplace cavity; a secondary combustion assembly disposed adjacent to a rear wall of the fireplace cavity, wherein the secondary combustion assembly includes a plurality of combustion chambers configured to facilitate secondary combustion; a plurality of inlets disposed in the rear wall of the fireplace cavity, wherein one or more of the plurality of inlets are configured to provide fluid communication between the fireplace cavity and a respective one of the plurality of combustion chambers; an exhaust gas collection chamber in fluid communication with at least the secondary combustion assembly, the exhaust gas collection chamber including a vent configured to release exhaust gas into a chimney; and an ambient air bypass aperture disposed in a top baffle of the fireplace cavity, the ambient air bypass aperture configured to divert at least a portion of ambient air entering the fireplace cavity into the exhaust gas collection chamber; wherein the plurality of combustion chambers include at least: one or more lower level combustion chambers, wherein the one or more lower level combustion chambers include one or more lower inlet openings disposed in a front wall of the secondary combustion assembly in fluid communication with one or more of the plurality of inlets disposed in the rear wall of the fireplace cavity; one or more intermediate level combustion chambers disposed above the one or more lower level combustion chambers, wherein the one or more intermediate level combustion chambers include one or more intermediate inlet openings disposed in a front wall of the secondary combustion assembly in fluid communication with one or more of the plurality of inlets disposed in the rear wall of the fireplace cavity; and one or more upper level combustion chambers disposed above the one or more intermediate level combustion chambers, wherein the one or more upper level combustion chambers include one or more upper inlet openings disposed in a front wall of the secondary combustion assembly in fluid communication with one or more of the plurality of inlets disposed in the rear wall of the fireplace cavity.