COOLING DEVICE FOR TAKEOFF INJECTOR OF DOUBLE HEAD COMBUSTION CHAMBER

摘要

PURPOSE: To provide a cooling device for a takeoff injector of a double injector of a double head combustion chamber capable of improving cooling of the takeoff injector, especially its outlet part. ;CONSTITUTION: In this device, the whole fuel flow amount Q1 for an idling injector is sent to and returned from an outlet part 10 of a takeoff injector through first conduits 16, 15 and a coaxial second conduit 20 to the first conduits 16, 15 connected with the first conduits 16, 15 through flow channels 21, while a fuel flow amount for the takeoff injector is fed to injection nozzles of the takeoff injector through third conduits 25, 17 disposed between the first conduits 16, 15 and the second conduit 20. The flow channels 21 and the injection nozzles are alternately disposed in the circumference of the outlet part 10. Thereby, the outlet part 10 is effectively cooled to prevent a coking phenomenon.;COPYRIGHT: (C)1996,JPO