Stoves and furnaces – Fireplaces or accessories – Fluid fuel
Patent
1991-04-05
1992-03-03
Yeung, James C.
Stoves and furnaces
Fireplaces or accessories
Fluid fuel
126 83, 126 85B, 126 92AC, 126523, 126531, 431125, F24C 300
Patent
active
050923137
ABSTRACT:
A gas log fireplace includes a firebox which defines a combustion chamber, a gas burner located within the firebox, an artificial log set, a log support member positioned on the gas burner, a heat exchanger connected to an exhaust gas outlet of the firebox and a convection chamber which surrounds the firebox and the heat exchanger for heating of room air. The gas burner is fabricated of a refractory fiber material. A combustible gas and primary air are mixed in a Venturi inlet tube of the gas burner. Highly aerated gas flows through front ports and top ports in the gas burner. Secondary air is directed to the front ports and the top ports to obtain highly efficient combustion and high heat output. The artificial log set, the support member and the gas burner define a partially enclosed cavity which is maintained at a high temperature during operation by reradiation from the artificial logs, the support member and the gas burner. The heat exchanger includes an interior rib configuration that provides efficient transfer of heat to room air.
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Blackburn Richard S.
Byrne William A.
Ferguson Robert W.
Richardson Stephen F.
Vermont Castings, Inc.
Yeung James C.
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