Combustor cooling hole pattern
First Claim
Patent Images
1. A combustor liner assembly comprising:
- a liner defining an opening;
a first group of cooling holes formed in said liner beginning upstream of a leading edge of said opening and ending before at least a trailing edge of the opening, wherein the cooling holes in the first group are spaced apart according to a first hole density; and
a second group of cooling holes disposed outside of said first group of cooling holes, said cooling holes in the second group spaced apart according to a second hole density that is less than the first hole density, wherein said second group of cooling holes is disposed upstream of said first group of cooling holes.
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Abstract
A combustor assembly includes an inner and outer liner defining a combustion chamber. The inner and outer liners include a plurality of cooling holes spaced a specified distance apart. The cooling holes include first, second and third groups. The first group of cooling holes is the most densely spaced, followed by the second group and then the third group. The first group of cooling holes begin upstream of a leading edge of a large opening and terminates downstream of the leading edge. The increased density of cooling holes adjacent the large openings provide increased cooling airflow in areas where cooling may be affected by local disturbances in cooling airflow.
54 Citations
29 Claims
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1. A combustor liner assembly comprising:
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a liner defining an opening; a first group of cooling holes formed in said liner beginning upstream of a leading edge of said opening and ending before at least a trailing edge of the opening, wherein the cooling holes in the first group are spaced apart according to a first hole density; and a second group of cooling holes disposed outside of said first group of cooling holes, said cooling holes in the second group spaced apart according to a second hole density that is less than the first hole density, wherein said second group of cooling holes is disposed upstream of said first group of cooling holes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A combustor liner assembly comprising:
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a liner defining an opening; a first group of cooling holes formed in said liner beginning upstream of a leading edge of said opening and ending before at least a trailing edge of the opening, wherein the cooling holes in the first group are spaced apart according to a first hole density; a second group of cooling holes disposed outside of said first group of cooling holes, said cooling holes in the second group spaced apart according to a second hole density that is less than the first distance; and a third group of cooling holes, wherein said third group of cooling holes are spaced apart according to a third distance, wherein the third distance is less than said first and second bole densities for the first and second group of cooling holes. - View Dependent Claims (19, 20)
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21. A combustor assembly comprising:
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a liner including an opening; a first group of cooling holes within said liner supplying a flow of cooling air, said first group of cooling holes disposed within said liner beginning upstream of a leading edge of said opening and ending at least before a trailing edge of said opening; and a second group of cooling holes within said liner supplying a flow of cooling air, said second group of cooling holes disposed outside of said first group of cooling holes, said second group of cooling holes spaced apart according to a second hole density that is less than a spacing between cooling holes according to a first hole density within said first group of cooling holes, wherein said second group of cooling holes is disposed upstream of said first group of cooling hole. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A combustor assembly comprising:
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a liner including an opening; a first group of cooling holes within said liner supplying a flow of cooling air, said first group of cooling holes disposed within said liner beginning upstream of a leading edge of said opening and ending at least before a trailing edge of said opening; a second group of cooling holes within said liner supplying a flow of cooling air, said second group of cooling holes disposed outside of said first group of cooling holes, said second group of cooling holes spaced apart according to a second hole density that is less than a spacing according to a first hole density between cooling holes within said first group of cooling holes; and a third group of cooling holes spaced apart from each other according to a third hole density that is less than said first hole density of said first group of cooling holes and said second hole density of said second group of cooling holes. - View Dependent Claims (28, 29)
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Specification