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US 7,350,357 B2Granted
Nozzle
AssigneeUnited Technologies Corporation
InventorsAlexander G. Chen, Catalin G. Fotache
Life of this patent
Estimating the term…
Abstract
The fuel injector has a first means defining a number of flowpaths each having an inlet for receiving air and an outlet for discharging a fuel/air mixture. One or more arrays of vanes are each positioned to impart swirl to an associated one or more of the flowpaths. Second means are provided for introducing the fuel to the air.
Claims15
A fuel injector apparatus comprising:
- a plurality of generally annular passageways, the passageways being coaxial about an injector axis, each passageway defining a gas flowpath having an inlet for receiving air and an outlet for discharging a fuel/air mixture;
- a plurality of arrays of vanes, each array in an associated one of the passageways;
- and
- a plurality of fuel flows introducing said fuel to said air, wherein:
- each of the vanes in a first of the arrays is oriented at a first relative orientation to provide a first circulation;
- and
- each of the vanes in a second of the arrays, inboard of said first of said arrays, is oriented at a second relative orientation different from the first relative orientation, to provide a second circulation of like sign to the first circulation.
4 more elements
A fuel injector apparatus comprising:
- first means defining a plurality of flowpaths having an inlet for receiving air and an outlet for discharging a fuel/air mixture;
- one or more arrays of vanes, each such array in positioned to impart swirl to an associated one or more of the flowpaths;
- and
- second means for introducing said fuel to said air, wherein:
- each of the vanes in a first of the arrays is oriented at a first relative orientation to provide a first circulation;
- and
- each of the vanes in a second of the arrays, inboard of said first of said arrays, is oriented at a second relative orientation different from the first relative orientation, to provide a second circulation of like sign to the first circulation.
4 more elements
A fuel injector apparatus comprising:
- a plurality of generally annular passageways, the passageways being coaxial about an injector axis, each passageway defining a gas flowpath having an inlet for receiving air and an outlet for discharging a fuel/air mixture;
- a plurality of arrays of vanes, each array in an associated one of die passageways;
- and
- a plurality of fuel flows introducing said fuel to said air, wherein:
- each of the vanes in a first of the arrays is oriented at a first relative orientation;
- each of the vanes in a second of the arrays is oriented at a second relative orientation different from the first relative orientation;
- and
- there are at least ten vanes in each of at least the first and second of the arrays.
5 more elements
Dependencies are inferred from the claim text.