Power plants – Combustion products used as motive fluid – Combustion products generator
Reexamination Certificate
2006-06-27
2006-06-27
Rodriguez, William H. (Department: 3746)
Power plants
Combustion products used as motive fluid
Combustion products generator
C060S740000, C060S737000
Reexamination Certificate
active
07065972
ABSTRACT:
A fuel-air mixer for use in a combustion chamber of a gas turbine engine is provided. The fuel air mixing apparatus comprises an annular fuel injector having a plurality of discrete plain jet orifices, a first swirler wherein the first swirler is located upstream from the fuel injector and a second swirler wherein the second swirler is located downstream from the fuel injector. The plurality of discrete plain jet orifices are situated between the highly swirling airstreams generated by the two radial swirlers. The distributed injection of the fuel between two highly swirling airstreams results in rapid and effective mixing to the desired fuel-air ratio and prevents the formation of local hot spots in the combustor primary zone. A combustor and a gas turbine engine comprising the fuel-air mixer of the present invention are also provided as well as a method using the fuel-air mixer of the present invention.
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Yankowich Paul R.
Zupanc Frank J.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
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