Draft controlled boiler fuel nozzle
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United States of America Patent
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-
Apr 13, 2004
Grant Date -
N/A
app pub date -
Aug 30, 2002
filing date -
Aug 30, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-fuel boiler having multiple, independent draft or combustion air sources and controls. A conventional oil/gas burner and nozzle assembly is fitted to an injector tube and isolated from a thermal transfer medium. A butterfly valve is supported in the injector tube and a motorized linkage directs valve operation. When the burner is non-operational, the valve prevents secondary combustion air from passing through the oil/gas burner to effect combustion in the firebox.
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