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US 7,546,734 B2Granted
Homogenous mixture formation by swirled fuel injection
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorsThomas Dörr, Leif Rackwitz
Life of this patent
Estimating the term…
Abstract
A fuel injection device for a gas turbine includes an airflow passage 1 whose walls 2 are provided with at least one fuel opening 3 for the injection of fuel into the airflow, with the center axes 4 of the fuel openings 3 being inclined at least in a circumferential direction.
Claims7
A fuel injection device for a gas turbine, comprising:
- an airflow passage having an outer annular wall, a main stream of the airflow through the fuel injection device passing through the airflow passage within the outer annular wall,
- an air swirler positioned to swirl the main stream of the airflow and which thereby creates a high local air mass flow positioned at a radially outward portion of the main stream of the airflow near the outer annular wall,
- a plurality of fuel openings positioned on the outer annular wall of the airflow passage, downstream of the air swirler, for the injection of liquid fuel into the main stream of the airflow, wherein, a center axis of each fuel opening is inclined in a circumferential direction and also inclined axially against the main stream of the airflow such that the liquid fuel is injected radially inwardly, axially upstream and with a circumferential component to a controlled penetration depth within the high local air mass flow.
Dependencies are inferred from the claim text.