Power plants – Combustion products used as motive fluid – With safety device
Reexamination Certificate
2005-05-31
2005-05-31
Kim, Ted (Department: 3746)
Power plants
Combustion products used as motive fluid
With safety device
C060S740000, C060S742000, C060S748000
Reexamination Certificate
active
06898926
ABSTRACT:
A fuel injector includes a main fuel nozzle with a main nozzle fuel circuit and a pilot nozzle fuel circuit in fuel supply communication with a pilot nozzle. The injector further includes a purge means for purging the main nozzle fuel circuit while the pilot nozzle fuel circuit supplies fuel to the pilot nozzle and a purge air cooling means for supplying a cooled portion of purge air to the main nozzle fuel circuit during purging. The cooled portion is cooled with fuel that flows through the pilot nozzle fuel circuit. The purge air cooling means may include a purge air cooling path in thermal conductive communication with the pilot nozzle fuel circuit and operable to flow the cooled portion therethrough to the main nozzle fuel circuit during purging. The purge air cooling path may be in thermal conductive communication with at least one annular pilot leg of the pilot nozzle fuel circuit.
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Andes William Scott
General Electric Company
Kim Ted
Rosen Steven J.
LandOfFree
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