Fuel nozzle
A fuel distributor is disclosed comprising a body having a unitary construction, a fuel conduit located within the body, a fuel flow path located within the body that is oriented in a circumferential direction around an axis and in flow communication with the fuel conduit, and at least one orifice located in the body in flow communication with the fuel flow path such that a fuel entering the fuel conduit exits through the orifice.
1. A combustor component comprising:
a distributor body having an axis and an annular outer surface;
one or more fuel conduits located within the distributor body, the one or more fuel conduits oriented in a substantially axial direction;
a main fuel circuit located within the distributor body, the main fuel circuit oriented in a circumferential direction around the axis and communicating with each of the one or more fuel conduits at a corresponding fuel inlet;
a circumferential row of fuel orifices located in the distributor body in flow communication with the main fuel circuit, each orifice extending in a substantially radial direction and communicating with the outer surface, wherein a cross section area of the main fuel circuit varies in the circumferential direction;
wherein the distributor body and fuel conduits are monolithically formed as a single piece.
2. A combustor component according to claim 1 further comprising: an annular heat shield located at an axially aft end of the distributor body such that the heat shield is capable of shielding the distributor body from a flame located axially aft from the distributor body.
3. A combustor component according to claim 2 wherein the distributor body has a circumferential row of axial openings capable of flowing cooling air towards the heat shield.
4. A fuel nozzle comprising:
the combustor component of claim 1 , and
an annular air swirler located radially inside the distributor body and capable of swirling an air stream entering the annular air swirler; and
a fuel injector located radially inside the annular air swirler capable of injecting a stream of fuel into a mixing chamber such that the fuel and air are mixed within the mixing chamber.
5. A fuel nozzle according to claim 4 further comprising: an annular fuel distributor comprising a single monolithic element, the single monolithic element further comprising a center body having an annular outer wall surrounding the distributor body and having at least one circumferential row of openings corresponding to a plurality of fuel orifices located within the distributor body arranged circumferentially around the axis.
6. A fuel nozzle according to claim 5 further comprising: the at least one circumferential row of openings located on the outer wall capable of flowing cooling air over a portion of the outer wall.
7. A fuel nozzle according to claim 6 wherein the at least one circumferential row of openings are diffuser holes.
8. A fuel nozzle according to claim 4 further comprising:
an annular heat shield located at an aft end of a center body such that the annular heat shield is capable of shielding the center body from a flame located axially aft from the center body.
9. A fuel nozzle according to claim 8 further comprising:
at least one row of axial flow holes located on the center body capable of flowing cooling air towards the annular heat shield.
10. The combustor component of claim 1 further comprising:
a circumferential row of fuel posts extending radially outward from the outer surface of the distributor body;
a center body having an annular outer wall surrounding the distributor body, the annular outer wall of the center body spaced apart from the outer surface of the distributor body in a radial direction so as to define an annular passage for air flow between the outer wall and the distributor body, and having a circumferential row of openings, each opening aligned with one of the fuel posts;
wherein each orifice extends in a substantially radial direction through one of the fuel posts; and
wherein the distributor body, fuel conduits, and the center body are monolithically formed as a single piece.
11. The combustor component of claim 1 wherein the main fuel circuit includes two or more separate fuel paths, each fuel path extending in a circumferential direction within the distributor body and communicating with one of the fuel inlets and a plurality of the fuel orifices.