US Patent 7422011 Fireplace front panel assembly for reducing temperature

A heating appliance includes an outer enclosure including a transparent front panel, a combustion chamber enclosure, and a variable speed blower. The combustion chamber enclosure is positioned within the outer enclosure and defines a combustion chamber wherein radiant heat is generated. The combustion chamber enclosure also includes a transparent front panel. The blower is configured to generate an adjustable airflow between the outer enclosure front panel and the combustion chamber enclosure front panel and to exhaust the airflow to a remote location. The airflow absorbs at least some of the radiant heat and varying a speed of the blower controls an amount of radiant heat transferred from the combustion chamber to a living space in which the heating appliance is exposed.