Transition scrolls for use in turbine engine assemblies
AssigneeHoneywell International Inc.
InventorsJurgen C. Schumacher, Ian L. Critchley, David G. Walhood, Stony W. Kujala, Gregory O. Woodcock
Life of this patent
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Abstract
An engine assembly includes a combustor having a combustion chamber in which an air and fuel mixture is combusted to produce combustion gases. The engine assembly further includes a transition scroll coupled to the combustor for receiving the combustion gases. The transition scroll includes an interior surface, an exterior surface, and effusion cooling holes for providing cooling air to the interior surface. The engine assembly further includes a turbine coupled to the transition scroll for receiving and extracting energy from the combustion gases.
Claims18
An engine assembly, comprising:
- a combustor comprising a combustion chamber in which an air and fuel mixture is combusted to produce combustion gases;
- a transition scroll coupled to the combustor for receiving the combustion gases, the transition scroll comprising an interior surface, an exterior surface, and effusion cooling holes for providing cooling air to the interior surface, wherein the transition scroll is helical with an inlet and a B-width outlet;
- and
- a turbine coupled to the transition scroll for receiving and extracting energy from the combustion gases.
A transition scroll for receiving combustion gases from a combustor and providing the combustion gases to a turbine, the transition scroll comprising:
- a body configured to extend between the combustor and the turbine scroll, the body having a hot surface and a cold surface during operation;
- and
- effusion cooling holes formed in the body for supplying cooling air to the hot surface, wherein the effusion cooling holes comprise a first group with a first density and a second group with a second density, and wherein the body is helical with an inlet and an outlet, at least a portion of the effusion cooling holes being adjacent the inlet.
An engine assembly, comprising:
- a can combustor comprising a combustion chamber in which an air and fuel mixture is combusted to produce combustion gases;
- a turbine for receiving and extracting energy from the combustion gases;
- and
- a transition scroll coupling the can combustor to the turbine, the transition scroll being helical with an inlet coupled to the can combustor and a B-width outlet coupled to the turbine, the transition scroll having a hot surface, a cold surface, and effusion cooling holes for providing a layer of cooling air to the hot side, the transition scroll further having an inner portion and an outer portion, the effusion cooling holes comprising a first group with a first density on the outer portion and a second group with a second density on the inner portion, the first density being greater than the second density.
Dependencies are inferred from the claim text.