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US 9,939,155 B2Granted
Flexible swirlers
AssigneeDelavan Inc.
InventorsBrett A. Pfeffer, Jason A. Ryon
Life of this patent
Estimating the term…
Abstract
A swirler includes a swirler body and a plurality of axial swirl vanes extending radially outward from the swirler body. At least one of the swirler body or vanes includes a spring channel defined therethrough. A fuel injector for a gas turbine engine can include an inner air swirler and/or outer air swirler as described above.
Claims10
A swirler comprising:
- a swirler body;
- and
- a plurality of axial swirl vanes extending radially outward from the swirler body, wherein at least one of the vanes includes a spring channel defined circumferentially through the thickness thereof, wherein the spring channel is located in the at least one vane extending radially outward of a base of the vane where the swirl vane connects to the swirler body, and extending radially inward of a radially outward tip of the swirl vane, wherein the spring channel is at least one of:
- the spring channel extending from an upstream portion of the vane to a channel opening at a trailing edge of the vane;
- and
- the spring channel extending from a downstream portion of the vane to a channel opening at a leading edge of the vane.
3 more elements
A fuel injector for a gas turbine engine comprising:
- a) an injector body having a feed arm with a nozzle body connected thereto;
- b) a fuel conduit fluidly connecting a fuel inlet portion of the feed arm to a fuel circuit in the nozzle body to form a fuel path through the injector body;
- c) an outer air swirler operatively connected to the nozzle body outboard of the fuel circuit, the outer air swirler including a barrel with a plurality of swirl vanes extending radially outward from the barrel;
- and
- d) an inner air swirler operatively connected to the nozzle body inboard of the fuel circuit, the inner air swirler including an inner aft swirler bullet with a plurality of swirl vanes extending radially outward from the bullet, wherein at least one of the vanes of the outer air swirler, or the swirl vanes of the inner air swirler includes a spring channel defined circumferentially through the thickness thereof, wherein the spring channel is located in the at least one vane extending radially outward of a base of the vane, and extending radially inward of a radially outward tip of the swirl vane, wherein the spring channel is at least one of:
- the spring channel extending from an upstream portion of the vane to a channel opening at a trailing edge of the vane;
- or
- the spring channel extending from a downstream portion of the vane to a channel opening at a leading edge of the vane.
5 more elements
Dependencies are inferred from the claim text.