Retention feature for fuel injector nozzle

摘要

A nozzle for a fuel injector can include an outer air swirler having an inner surface with the outer air swirler having a groove on the inner surface and a prefilmer located concentrically within the outer air swirler with the prefilmer having at least one detent finger to engage the groove on the inner surface of the outer air swirler. The nozzle can also include a fuel swirler located concentrically within the prefilmer and configured to convey fuel to a forward end of the nozzle with the fuel swirler having at least one tab extending axially at an aft end, and an inner air swirler having a cylindrical forward end located concentrically within the fuel swirler and an aft support extending radially outward to contact the outer air swirler with the cylindrical forward end contacting at least one tab of the fuel swirler to hold the fuel swirler in place.

主权项

1. A fuel injector with a nozzle, the nozzle comprising:
an outer air swirler having an outer surface and an inner surface and a forward end and an aft end, the outer air swirler having a groove on the inner surface; a prefilmer located concentrically within the outer air swirler, the prefilmer having at least one detent finger to engage the groove on the inner surface of the outer air swirler; a fuel swirler located concentrically within the prefilmer and configured to convey fuel to a forward end of the nozzle, the fuel swirler having at least one tab extending axially at an aft end; and an inner air swirler having a cylindrical forward end located concentrically within the fuel swirler and an aft support extending radially outward to contact the outer air swirler, the cylindrical forward end contacting the at least one tab of the fuel swirler to hold the fuel swirler in place and the aft support having an opening configured to allow a fuel tube to extend through to contact the fuel swirler.