INJECTOR NOZZLE FOR TURBOMACHINE COMPRISING A PRIMARY FUEL CIRCUIT ARRANGED AROUND A SECONDARY FUEL CIRCUIT

摘要

An injector nozzle (43) for a turbomachine comprises a primary fuel circuit ending in a fuel ejection pipe (66), and a secondary fuel circuit comprising an annular end portion for ejecting fuel (68) arranged around the fuel ejection pipe. A portion upstream from the primary fuel circuit comprises an annular channel (70), which extends around the secondary fuel circuit and is defined by an external wall (72) of the injector nozzle. The injector nozzle comprises air intake channels (126) extending through the annular channel (70) and having inlets opening into the external wall (72) and outlets (130) opening into an annular air injection channel (124) arranged radially in the interior in relation to the end portion for ejecting fuel, around the fuel ejection pipe, and cooperating with the end portion for ejecting fuel in order to form an aerodynamic secondary injector.