Integrated heat shield

摘要

A fuel injector for a gas turbine engine includes a nozzle tip assembly having a substantially monolithically formed nozzle body. The nozzle body has an annular outlet chamber for issuing a spray from the nozzle tip. A feed channel is in fluid communication with the outlet chamber through a feed passage. A heat shield void substantially surrounds the feed channel(s).

主权项

1. A fuel injector for a gas turbine engine comprising:
a nozzle tip including a substantially monolithic nozzle body having:
an annular outlet chamber for issuing a spray of fuel from the nozzle tip;a feed channel in fluid communication with the annular outlet chamber through a feed passage; anda heat shield extending circumferentially and axially to surround the feed channel relative to a longitudinal axis defined by the nozzle tip, the heat shield void further extending from a radial position outside of the feed passage to a position radially interior of the feed passage, wherein the heat shield void is an internal cavity of the nozzle body that is sealed from the fuel and any other fluids flowing through or around the fuel injector.