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US 6,539,724 B2Granted
Airblast fuel atomization system
AssigneeDelavan Inc.
InventorsMichael Dale Cornwell, Anthony William Newman, Vladimir Dusan Milosavljevic
Life of this patent
Estimating the term…
Abstract
An airblast fuel injector assembly for use in conjunction with a gas turbine is disclosed which includes an elongated tubular body having first and second concentric tubes separated from one another by a helical spacer wire so as to define a fuel passage therebetween. The injector assembly is situated such that fuel flow exiting the fuel passage is intersected by an air flow at a predetermined angle of incidence so as to atomize the fuel flow.
Claims14
A method of atomizing fuel comprising the steps of:
- a) providing a fuel injector having an elongated tubular body including inner and outer concentric tubes that are separated from one another by a helical spacer wire so as to define a fuel passage therebetween;
- b) flowing fuel through the fuel passage so as to extrude the fuel flow;
- and
- c) intersecting the extruded fuel flow exiting the fuel passage with an air flow at a predetermined angle of incidence so as to atomize the extruded fuel flow.
1 more element
A fuel nozzle comprising:
- a) a nozzle body including a discharge section having an interior chamber, the discharge section having a fuel inlet port formed therein for admitting an extruded fuel film into the interior chamber thereof, and an air inlet port adjacent the fuel inlet port for directing an air stream into the interior chamber of the discharge section so as to intersect the fuel film at a predetermined angle to effect atomization of the fuel film;
- and
- b) a fuel injector communicating with the fuel inlet port, the fuel injector having an elongated tubular body including inner and outer concentric tubes that are separated from one another so as to define a fuel passage therebetween.
A fuel nozzle comprising:
- a) a nozzle body including a discharge section having an interior chamber defining a central axis, and an annular swirl plate disposed within the interior chamber of the discharge section, the swirl plate having a plurality of circumferentially spaced apart air channels formed therein for directing air radially inwardly in a plane extending generally perpendicular to the central axis of the interior chamber, the swirl plate having a plurality of circumferentially spaced apart fuel inlet ports formed therein, each fuel inlet port adapted to admit an extruded fuel film into the interior chamber of the discharge section at a location adjacent a radially inner end of a corresponding air channel, such that air flowing through each channel intersects a corresponding fuel film at a predetermined angle to effect atomization of the fuel film;
- and
- b) a fuel injector communicating with each fuel inlet port, each fuel injector having an elongated tubular body including inner and outer concentric tubes that are separated from one another so as to define a fuel passage therebetween.
Dependencies are inferred from the claim text.