Swirler for gas turbine engine fuel injector
AssigneeUnited Technologies Corporation
InventorAlbert K. Cheung
Life of this patent
Estimating the term…
Abstract
A swirler for a gas turbine engine fuel injector comprises a swirler body extending from an upstream end to a downstream end. A fuel injector extends into the body, and has a downstream end for injecting fuel in a downstream direction. A first flow path directs air in a first circumferential direction about a central axis of the swirler body. A second flow path directs air to intermix with the air in the first flow path, and then to mix with fuel injected by the fuel injector. The first and second flow paths are positioned to inject air upstream of the downstream end of the fuel injector where fuel is injected. The first flow path is provided in a greater volume than the volume provided in the second flow path. The second flow path directs air at a location downstream of the first flow path.
Claims19
A swirler for a gas turbine engine fuel injector comprising:
- a swirler body extending from an upstream end to a downstream end, a fuel injector extending into the body, and having a downstream end for injecting fuel in a downstream direction;
- a first flow path for directing air in a first circumferential direction about a central axis of the swirler body;
- a second flow path directing air to intermix with the air in the first flow path, and then to mix with fuel injected by the fuel injector, said first and second flow paths being positioned to inject air upstream of the downstream end of the fuel injector where fuel is injected;
- and
- said first flow path is provided in a greater volume than the volume provided in the second flow path, said second flow path directing air at a location downstream of said first flow path.
A swirler for a gas turbine engine comprising:
- a swirler body extending from an upstream end to a downstream end, a fuel injector extending into the body, and having a downstream end for injecting fuel in a downstream direction;
- a first flow path for directing air in a first circumferential direction about a central axis of the swirler body;
- a second flow path delivering air to intermix with the air in the first flow path, and then to mix with fuel injected by the fuel injector, said first and second flow paths mixing air upstream of the downstream end of the fuel injector;
- and
- a third flow path injecting air downstream of the downstream end of the fuel injector, and said third flow path being generally in the same circumferential direction as said first flow path, and the air injected in the second flow path being generally opposed to the direction of air flow from the first and third air flow paths.
Dependencies are inferred from the claim text.