Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Reexamination Certificate
2007-08-07
2007-08-07
Wilson, Gregory (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
Fluid fuel burner
C431S114000
Reexamination Certificate
active
10978571
ABSTRACT:
The gas-fired heater, especially a water heater, has an atmospheric gas burner (5) arranged within a nearly or completely closed combustion chamber (2) and associated with a premixing gas/air supply system (8) with a fuel gas feed nozzle (10). In order to avoid oscillations, which lead to sound waves and combustion instabilities, an oscillation-damping air supply chamber (11, 11′, 11″) is connected to the entrance (8a) of the gas/air supply system (8) for combustion air, within which the fuel gas feed nozzle is arranged. The air supply chamber (11, 11′, 11″) is provided with at least one air entrance (12, 12′, 12″). The air supply chamber can be box-like, duct-like embracing or extending around the combustion chamber or it can be a pipe with different diameter pipe sections.
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Groehl Alexander
Hirsch Robert
Roelfsema Klaas W.
Ceramat, S.coop.
Striker Michael J.
Wilson Gregory
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