Combination burner with primary and secondary fuel injection
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United States of America Patent
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Dec 23, 1997
Issued Date -
N/A
app pub date -
May 12, 1995
filing date -
Jan 24, 1994
priority date (Note) -
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Abstract
A combination burner which uses primary and secondary fuel injection and improves liquid propane combustion. The burner supplies primary air, while secondary air is swirled to shape and mix the flame when the burner is firing 'on oil'. When the burner is firing 'on gas', primary air enters the burner through an annulus at the atomizing air pipe or conduit so as to have the primary gas enter that pipe; secondary gas is injected radially into the air stream at a downstream location relative to an atomizing nozzle. In using liquid propane (butane) to fire the burner, two stage fuel injection is used, with a stream of fuel being injected upstream and toward the burner centerline and another stream of fuel being injected downstream and outwardly away from the burner centerline.
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