Fuel nozzle with discrete jet inner air swirler

摘要

A fuel nozzle (10; 100; 200; 300) includes an axial fuel circuit (12; 112) having a converging front surface (14; 114) with an axial fuel outlet (16; 116) formed therein, an air swirler (18; 118, 140) surrounding the axial fuel circuit and having a converging front wall (20; 120), a swirl chamber (24; 124) bounded by the converging front surface of the axial fuel circuit and the converging front wall of the air swirler, and an air cap (26; 142) surrounding the air swirler, such that an air circuit (28; 128, 144) is defined between the air cap and the air swirler. A plurality of circumferentially disposed discrete jet passages (32; 132) extend through the converging front wall of the air swirler for directing atomizing air from the air circuit to the swirl chamber.