초록

A feed diffuser is disclosed. The diffuser may comprise a base disposed orthogonal to a flow, a body extending from the base toward the flow, and an apex provided at a termination of the body in a direction toward the flow. The body may decrease in cross-sectional area from the base to the apex.

대표청구항 ▼

1. A feed diffuser for supplying a flow of coolant to a surface of a liner, comprising: a base disposed orthogonal to a the flow of coolant;a body extending from the base toward the flow;an apex provided at a termination of the body in a direction toward the flow, the body directing the flow of cool

1. A feed diffuser for supplying a flow of coolant to a surface of a liner, comprising: a base disposed orthogonal to a the flow of coolant;a body extending from the base toward the flow;an apex provided at a termination of the body in a direction toward the flow, the body directing the flow of coolant radially outwardly along the surface of the liner, relative to a central axis of the body; anda plurality of spacers extending from the base, the spacers configured to mount the base to the liner at a distance from the liner, the liner having effusion holes. 2. The feed diffuser of claim 1, wherein a surface of the body converges from the base to the apex for smoothly diffusing the flow. 3. The feed diffuser of claim 2, wherein the surface of the body has a concave shape. 4. The feed diffuser of claim 1, wherein the base has a generally circular shape. 5. The feed diffuser of claim 4, wherein the apex is a conical point. 6. The feed diffuser of claim 5, wherein the apex and a center of the base are aligned with a central axis of the flow. 7. The feed diffuser of claim 1, wherein the base is mounted on the surface of the liner. 8. The feed diffuser of claim 1, wherein the flow exits from a coolant supply tube situated within a pressure sheet. 9. The feed diffuser of claim 8, wherein the pressure sheet and the liner define a plenum for coolant air flow. 10. A system for providing flow of coolant to a surface of a liner, comprising: a coolant supply source configured to provide a flow of coolant in an orthogonal direction onto the liner; anda diffuser having a body with a downstream end mounted on the liner and an upstream end facing the flow of coolant, the diffuser increasing in cross-sectional area from the upstream end to the downstream end, the body directing the flow of coolant radially outwardly along the surface of the liner, relative to a central axis of the body; anda plurality of spacers extending from the base, the spacers configured to mount the base to the liner at a distance from the liner, the liner having effusion holes. 11. The system of claim 10, wherein the coolant supply source is a compressor of a gas turbine engine and the liner is a liner of a combustor of the gas turbine engine. 12. The system of claim 10, wherein the diffuser has a central axis aligned with a central axis of the flow. 13. The system of claim 10, wherein the upstream end comprises an apex, and wherein the body diverges from the upstream end to the downstream end in an arcuate shape. 14. The system of claim 12, wherein the body is concaved from the upstream end to the downstream end thereby diverting impingement of flow upon the target sheet liner. 15. A combustor, comprising: a shell having impingement holes;a liner having effusion holes extending therethough; andat least one diffuser mounted on the liner directly under one of the impingement holes in the shell, the at least one diffuser having a body disposed in a path of a flow of coolant, the body directing the flow of coolant radially outwardly along the surface of the liner, relative to a central axis of the body; anda plurality of spacers mounting the at least one diffuser to a surface of the liner at a distance from the surface of the liner so as to prevent blockage of the effusion holes in the liner. 16. The combustor of claim 15, wherein the at least one diffuser smoothly diffuses a flow from the impingement hole. 17. The combustor of claim 16, wherein the at least one diffuser has a generally arcuate shape. 18. The combustor of claim 15, wherein the at least one diffuser decreases in cross-sectional area from a base to an apex.