Injectors for multipoint injection
AssigneeDelavan Inc.
InventorsLev Alexander Prociw, Jason Ryon
Life of this patent
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Abstract
An injector for a multipoint combustor system includes an inner air swirler which defines an interior flow passage and a plurality of swirler inlet ports in an upstream portion thereof. The inlet ports are configured and adapted to impart swirl on flow in the interior flow passage. An outer air cap is mounted outboard of the inner swirler. A fuel passage is defined between the inner air swirler and the outer air cap, and includes a discharge outlet between downstream portions of the inner air swirler and the outer air cap for issuing fuel for combustion. The outer air cap defines an outer air circuit configured for substantially unswirled injection of compressor discharge air outboard of the interior flow passage.
Claims19
An airblast injector for a multipoint combustor system comprising:
- an inner air swirler defining an interior flow passage and a plurality of swirler inlet ports in an upstream portion thereof configured and adapted for fluid communication of compressor discharge air through the swirler inlet ports into the interior flow passage such that swirl is imparted on flow in the interior flow passage;
- and
- an outer air cap mounted outboard of the inner swirler with a fuel passage defined between the inner air swirler and the outer air cap, the fuel passage including a discharge outlet between downstream portions of the inner air swirler and the outer air cap for issuing fuel for combustion, and wherein the outer air cap defines an outer air circuit configured for substantially swirl-free injection of compressor discharge air outboard of the interior flow passage.
An airblast injector for a multipoint combustor system comprising:
- an inner air swirler defining an interior flow passage and a plurality of swirler inlet ports in an upstream portion thereof configured and adapted for fluid communication of compressor discharge air through the swirler inlet ports into the interior flow passage such that swirl is imparted on flow in the interior flow passage;
- and
- an outer air cap mounted outboard of the inner swirler with a fuel passage defined between the inner air swirler and the outer air cap, the fuel passage including a discharge outlet between downstream portions of the inner air swirler and the outer air cap for issuing fuel for combustion, wherein the outer air cap includes a plurality of cylindrical bores therethrough radially outboard of the fuel passage, wherein the cylindrical bores define an outer air circuit and are all oriented to converge toward a longitudinal axis defined by the inner air swirler and the outer air cap for substantially swirl-free injection of compressor discharge air outboard of the interior flow passage.
An airblast injector for a multipoint combustor system comprising:
- an inner air swirler defining an interior flow passage and a plurality of swirler inlet ports in an upstream portion thereof configured and adapted for fluid communication of compressor discharge air through the swirler inlet ports into the interior flow passage such that swirl is imparted on flow in the interior flow passage;
- and
- an outer air cap mounted outboard of the inner swirler with a fuel passage defined between the inner air swirler and the outer air cap, the fuel passage including a discharge outlet between downstream portions of the inner air swirler and outer air cap for issuing fuel for combustion, wherein the outer air cap includes at least one slotted outer air flow channel radially outboard of the fuel passage configured and adapted for substantially swirl-free injection of compressor discharge air outboard of the interior flow passage, wherein the at least one slotted outer air flow channel defines an outer air circuit, and wherein the at least one slotted airflow channel converges downstream toward a longitudinal axis defined by the inner air swirler and the outer air cap.
Dependencies are inferred from the claim text.