Fuel nozzle
AssigneePratt & Whitney Canada Corp.
InventorsYen-Wen WANG, Nigel Davenport, Eduardo Hawie
Life of this patent
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Abstract
A fuel nozzle for a combustor of a gas turbine engine includes a body defining an axial direction and a radial direction, an air passageway defined axially in the body, and a fuel passageway defined axially in the body radially outwardly from the air passageway. The fuel passageway has an outer wall including an exit lip at a downstream portion of the outer wall. The lip generally increases in diameter as it extends downstream.
Claims18
A fuel nozzle for a combustor of a gas turbine engine, the fuel nozzle comprising:
- a body defining an axial direction and a radial direction;
- an air passageway defined axially in the body;
- a fuel passageway defined axially in the body radially outwardly from the air passageway, the fuel passageway having an outer wall including an exit lip at a downstream end of the outer wall, the exit lip generally increasing in diameter as it extends downstream.
A gas turbine engine comprising:
- a combustor;
- and
- a plurality of fuel nozzles disposed inside the combustor, each of the fuel nozzles including:
- a body defining an axial direction and a radial direction;
- an air passageway defined axially in the body;
- a fuel passageway defined axially in the body radially outwardly from the air passageway, the fuel passageway having an outer wall including an exit lip at a downstream portion of the outer wall, the lip generally increasing in diameter as it extends downstream.
A method of delivering fuel from a fuel nozzle of a gas turbine engine, the method comprising:
- carrying by a fuel passageway of the fuel nozzle a film of pressurised fuel, the fuel passageway being disposed radially outwardly from an air passageway carrying a flow of pressurised air;
- and
- directing the film of pressurised fuel onto an inside surface of an exit lip of an outer wall of the fuel passageway and thinning the film of pressurised fuel as it travels therealong, the exit lip generally increasing in diameter as it extends downstream.
Dependencies are inferred from the claim text.