AIRBLAST FUEL INJECTOR

摘要

An airblast fuel injector is provided for a fuel spray nozzle of a gas turbine engine. The injector has an annular air passage for the passage of a swirling air flow therethrough. The swirling air flow is used by the injector to produce an atomised fuel spray. The air passage contains a swirler for producing the swirling air flow, the swirler comprising a circumferential row of vanes which span inner and outer side walls of the air passage. Viewed on a longitudinal section through the injector, the air passage has a bend downstream of the swirler, the bend changing the direction of the air passage. The vanes are configured to introduce a radial component to the air flow exiting the swirler, the radial component guiding the air flow around the bend.

主权项

1. An airblast fuel injector for a fuel spray nozzle of a gas turbine engine, the fuel injector having an annular air passage for the passage of a swirling air flow therethrough, the swirling air flow being used by the fuel injector to produce an atomised fuel spray, wherein:
the air annular passage contains a swirler for producing the swirling air flow, the swirler comprising a circumferential row of vanes which span inner and outer side walls of the annular air passage; viewed on a longitudinal section through the fuel injector, the annular air passage has a bend downstream of the swirler, the bend changing the direction of the annular air passage; and the vanes are configured to introduce a radial component to the air flow exiting the swirler, the radial component guiding the air flow around the bend.