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US 2025/0035079 A1Published application
Airblast fuel injectors
AssigneeCollins Engine Nozzles, Inc.
InventorsJason A. Ryon, Brandon P. Williams, Andy W. Tibbs
Life of this patent
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Abstract
An airblast fuel injector assembly for a gas turbine engine is disclosed, which includes an annular air swirler and a fuel injector, wherein the annular air swirler includes a main body, an inner air cooler, an inner air swirler and a prefilmer, and wherein the fuel injector includes a feed tube, which has at least one fuel tip projecting through a respective reception hole formed in the annular wall of the main body radially outboard from the inner air swirler.
Claims19
An airblast fuel injector assembly for a gas turbine engine comprising:
- a) an annular air swirler including:
- i) a main body having a rear end wall defining a central axis of the annular air swirler, and a radially outwardly expanding conical wall portion extending downstream from the rear end wall;
- ii) an inner air cooler formed in the rear end wall of the main body portion;
- iii) an inner air swirler formed in an annular wall of the main body radially outboard from the conical wall portion;
- iv) a prefilmer radially outboard from the inner air swirler and including a circumferential prefilming surface extending downstream from the inner air swirler, wherein the prefilming surface has a circumferential internal fuel passage formed therein;
- b) a fuel injector including a feed tube having at least one fuel tip projecting through a respective reception hole formed in the annular wall of the main body radially outboard from the inner air swirler, each fuel tip having a fuel port positioned to direct fuel tangentially into the internal fuel passage in the prefilming surface.
3 more elements
Dependencies are inferred from the claim text.