Fuel nozzle
AssigneePratt & Whitney Canada Corp.
InventorsYen-Wen WANG, Nigel DAVENPORT
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 air passageway has a swirl-inducing relief defined at an exit lip of an outer wall of the air passageway. A gas turbine engine and a method of inducing swirl in an air passageway of a fuel nozzle of a gas turbine engine are also presented.
Claims19
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, the air passageway having a swirl-inducing relief defined at an exit lip of an outer wall of the air passageway;
- and
- a fuel passageway defined axially in the body radially outwardly from the air passageway.
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;
- and
- a fuel passageway defined axially in the body radially outwardly from the air passageway, the air passageway having a swirl-inducing relief defined at an exit lip of an outer wall of the air passageway, the swirl-inducing relief inducing swirl to pressurised air exiting the air passageway.
A method of inducing swirl in an air passageway of a fuel nozzle of a gas turbine engine, the method comprising:
- carrying pressurised air through a core air passageway in the fuel nozzle;
- and
- directing the pressurised air through a swirl-inducing relief and inducing swirl in the pressurised air exiting the air passageway, the swirl-inducing relief being disposed at an exit lip of an outer wall of the air passageway.
Dependencies are inferred from the claim text.