Power plants – Combustion products used as motive fluid – Combustion products generator
Reexamination Certificate
2004-09-03
2009-11-24
Casaregola, Louis J (Department: 3741)
Power plants
Combustion products used as motive fluid
Combustion products generator
C060S749000, C060S750000
Reexamination Certificate
active
07621132
ABSTRACT:
The subject application is directed to burners for gas turbine engines that use a pilot flame to assist in sustaining and stabilizing the combustion process. An embodiment of the disclosed burners includes, inter alia, a burner housing, a pilot combustor and a quencher. The burner housing has axially opposed upstream and downstream end portions. Additionally, the housing has at least one main fuel inlet passage and at least one main air inlet passage which are adapted to supply fuel and air respectively to an internal chamber defined in the housing. The pilot combustor is disposed along the axis of the burner housing and has an inlet for receiving a rich fuel and air mixture, a combustion chamber within which the rich fuel and air mixture is combusted into combustion products, and an outlet for exhausting the combustion products from the combustion chamber. The quencher is disposed within the internal chamber of the burner housing along the central axis and positioned at the outlet of the pilot combustor. The quencher has an air inlet and a plurality of radially-oriented air outlets for directing cooling air toward the outlet of the pilot combustor and quenching the combustion products exhausted from the pilot combustor.
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International Search Report dated Apr. 15, 2005.
JP Patent Abstsracts of Japan, Aug. 3, 1982, Agency of Ind Science & Technol.
Cornwell Michael
Milosavljevic Vladimir Dusan
Casaregola Louis J
Delavan Inc.
Siemens Aktiengesellschaft
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