Gas log fireplace heat exchanger

F - Mech Eng,Light,Heat,Weapons – 24 – B

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126/96

F24B 7/04 (2006.01) F24B 1/18 (2006.01)

Patent

CA 1239314

GAS LOG FIREPLACE HEAT EXCHANGER ABSTRACT OF THE DISCLOSURE A gas fueled heat exchange machine consists of a fan-driven, air fed, sealed chamber manifold resting flush on the base of a fireplace and centered square to its back wall. A series of cylindrical thick-walled ceramic tubes act as heated air conduits which are inset with heat-resistant cement both in the rear manifold and in the extended forward ends of the front body wall at the fireplace opening. Desirably the sealed air chamber is rectangular and has horizontal fixed louvered fins across its lower front to allow room-temperature air to be drawn upward from the cooler floor level into the fireplace, then forced through the lint-filtered sealed chamber and manifold and heated ceramic conduits, returning the warmed air to the room by vertical-slated louvers which divert the air flow to ascend at wide angles from the machine. The forced air cycle is provided by an electric transflow blower which is heat protected inside the sealed cham- ber at the internal base of the manifold. On the top surface of the sealed chamber, there is a horizontal U-shaped gas burner with a controllable primary air inlet on the underside thereof, together with side vents on both ends of the machine's walls to provide secondary combustion air supply. The hollow gas burner has a plurality of apertures on its top, spaced apart and in varying sizes, forming a consistent design which governs the height of the gas flame in a regulated undulating pattern.

552805

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