Fuel nozzle structure for air assist injection
First Claim
1. A fuel nozzle apparatus, comprising:
- an annular outer body, the outer body extending parallel to a centerline axis, the outer bodyhaving a generally cylindrical exterior surface extending between forward and aft ends, and having a plurality of openings passing through the exterior surface;
an annular inner body disposed inside the outer body, cooperating with the outer body to define an annular space;
an annular main injection ring disposed inside the annular space, the main injection ring including an annular array of fuel posts extending radially outward therefrom;
each fuel post being aligned with one of the openings in the outer body and separated from the opening by a perimeter gap which communicates with the annular space, wherein;
each fuel post is elongated in plan view and includes a perimeter wall defining a lateral surface and a radially-outward-facing floor recessed radially inward from a distal end surface of the perimeter wall to define a spray well; and
the perimeter gap is defined between the opening and the lateral surface;
a main fuel gallery extending within the main injection ring in a circumferential direction; and
a plurality of main fuel orifices, each main fuel orifice communicating with the main fuel gallery and extending through one of the fuel posts.
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Accused Products
Abstract
A fuel nozzle includes an outer body extending parallel to a centerline axis, having a generally cylindrical exterior surface, forward and aft ends, and a plurality of openings through the exterior surface. The fuel nozzle further includes an inner body inside the outer body, cooperating with the outer body to define an annular space, and a main injection ring inside the annular space, the main injection ring including fuel posts extending therefrom. Each fuel post is aligned with one of the openings and separated from the opening by a perimeter gap which communicates with the annular space. There is a circumferential main fuel gallery in the main injection ring, and a plurality of main fuel orifices, wherein each orifice communicates with the main fuel gallery and extends through one of the fuel posts.
199 Citations
8 Claims
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1. A fuel nozzle apparatus, comprising:
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an annular outer body, the outer body extending parallel to a centerline axis, the outer body having a generally cylindrical exterior surface extending between forward and aft ends, and having a plurality of openings passing through the exterior surface; an annular inner body disposed inside the outer body, cooperating with the outer body to define an annular space; an annular main injection ring disposed inside the annular space, the main injection ring including an annular array of fuel posts extending radially outward therefrom; each fuel post being aligned with one of the openings in the outer body and separated from the opening by a perimeter gap which communicates with the annular space, wherein; each fuel post is elongated in plan view and includes a perimeter wall defining a lateral surface and a radially-outward-facing floor recessed radially inward from a distal end surface of the perimeter wall to define a spray well; and the perimeter gap is defined between the opening and the lateral surface; a main fuel gallery extending within the main injection ring in a circumferential direction; and a plurality of main fuel orifices, each main fuel orifice communicating with the main fuel gallery and extending through one of the fuel posts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification