Gas turbine combustor liner with integral chute made by additive manufacturing process

1. A combustion liner assembly for a gas turbine engine, the combustion liner assembly comprising:

at least a portion of a combustion liner of a combustor, the combustion liner defining a combustion chamber;

a chute integral with the at least the portion of the combustion liner, the chute having an inlet, an outlet, and a body extending between the inlet and the outlet, wherein the body of the chute projects into the combustion chamber, wherein the inlet is located on an outer surface of the at least the portion of the combustion liner and the outlet opens into the combustion chamber; and

a cooling channel extending from the outer surface of the at least the portion of the combustion liner along a portion of the body of the chute that projects into the combustion chamber,

wherein the cooling channel comprises a plurality of cooling channels, each of the cooling channels haying a channel inlet hole at one end and a channel outlet hole at an oppositely disposed end, and

wherein the channel outlet hole of one of the cooling channels is split into three exit passages.

2. The combustion liner assembly of claim 1 , wherein a diameter of each of the cooling channels increases from the channel inlet hole to the channel outlet hole.

3. The combustion liner assembly of claim 1 , wherein the cooling channel curves away from the inlet of the chute.

4. The combustion liner assembly of claim 1 , wherein the at least the portion of the combustion liner and the chute comprise a metal alloy.

5. The combustion liner assembly of claim 1 , wherein the at least the portion of the combustion liner comprises a combustor tile.

6. A combustion liner system comprising:

at least a portion of a combustion liner defining a combustion chamber of a combustor of a gas turbine engine;

a chute wall defining a chute, wherein the chute wall is integral with the at least the portion of the combustion liner and projects into the combustion chamber, the chute comprising an inlet located on an outer surface of the at least the portion of the combustion liner and an outlet opening into the combustion chamber; and

a channel wall extending along at least a portion of the chute wall that projects into the combustion chamber, the channel wall defining a plurality of cooling channels positioned between the chute wall and the channel wall, wherein each of the plurality of cooling channels extends along the chute from a channel inlet hole to a channel outlet hole,

wherein the channel outlet hole of one of the plurality of cooling channels splits into three exit passages.

7. The system of claim 6 , wherein the plurality of cooling channels comprises a first portion and an oppositely disposed second portion, wherein the first portion is in fluid communication with the second portion.

8. The system of claim 7 , wherein the plurality of cooling channels is arranged around a circumference of the chute, and wherein the plurality of cooling channels curves away from the inlet.

9. The system of claim 8 , wherein the second portion comprises a channel body comprising pedestals.

10. The system of claim 6 , wherein the chute further comprises an upstream side relative to a primary flow path of the gas turbine engine, and a downstream side relative to the primary flow path, and wherein the downstream side of the chute extends further into the combustion chamber than the upstream side of the chute.

11. A method for fabricating a combustion liner chute, the method comprising:

forming a chute wall and a channel wall in at least a portion of a combustion liner of a combustor by additive layer manufacturing, the additive layer manufacturing comprising producing a chute and a plurality of cooling channels by adding layers of a material to a target surface, wherein the chute has an inlet, an oppositely disposed outlet, and an body extending between the inlet and the outlet, wherein the chute projects into a combustion chamber of the combustor, and

wherein the plurality of cooling channels is between the chute wall and the channel wall, and wherein each of the plurality of cooling channels extends along the body of the chute from a channel inlet hole to a channel outlet hole,

wherein the channel outlet hole of one of the plurality of cooling channel splits into three exit passages.

12. The method of claim 11 , the method further comprising producing turbulators in the cooling channel.

13. The method of claim 11 , wherein the plurality of cooling channels diverges at the outlet.

14. The method of claim 11 , wherein the additive layer manufacturing comprises electron beam melting.

15. The method of claim 11 , wherein the additive layer manufacturing comprises laser powder bed fusion.

16. The method of claim 11 , the method further comprising producing the combustion liner, the chute, and the plurality of cooling channels as one continuous piece by additive layer manufacturing.