Airfoil and gas turbine including same
AssigneeDoosan Enerbility Co., Ltd.
InventorIn Hyung PARK
Life of this patent
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Abstract
Proposed is an airfoil including a suction surface, a pressure surface, a leading edge, a trailing edge, and a through hole. The suction surface protrudes with an outward convex curved surface. The pressure surface is formed on a surface opposite to the suction surface and has a curved surface recessed concavely. The leading edge is arranged at an upper stream of an air flow and formed where front ends of the pressure surface and the suction surface are joined. The trailing edge is arranged at a lower stream of the air flow and formed where rear ends of the pressure surface and the suction surface are joined. The through hole is formed through the airfoil in a direction from the pressure surface to the suction surface.
Claims20
An airfoil comprising:
- a suction surface having an outwardly convex curved surface;
- a pressure surface disposed opposite the suction surface and having a curved surface recessed concavely toward the suction surface;
- a leading edge disposed upstream with respect to a direction of airflow and formed where front ends of the pressure surface and the suction surface are joined;
- a trailing edge disposed downstream with respect to the direction of the airflow and formed where rear ends of the pressure surface and the suction surface are joined;
- and
- at least one through hole extending through the airfoil from the pressure surface to the suction surface.
A gas turbine comprising:
- a compressor configured to compress inflow air, and comprising multiple stages of compressor blades installed radially and a compressor vane installed between the multiple stages of compressor blades;
- a combustor configured to mix and burn air compressed by the compressor with fuel;
- and
- a turbine configured to generate power with gas burned by the combustor,
- wherein at least one of the compressor blade and the compressor vane comprises an airfoil, wherein the airfoil comprises:
- a suction surface having an outwardly convex curved surface;
- a pressure surface disposed opposite the suction surface and having a curved surface concavely toward the suction surface;
- a leading edge disposed upstream with respect to a direction of airflow and formed where front ends of the pressure surface and the suction surface are joined;
- a trailing edge disposed downstream with respect to the direction of the airflow and formed where rear ends of the pressure surface and the suction surface are joined;
- and
- at least one through hole extending through the airfoil from the pressure surface to the suction surface.
Dependencies are inferred from the claim text.