Airfoil of axial flow machine
AssigneeIHI Corporation
InventorMasaaki Hamabe
Life of this patent
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Abstract
An airfoil of an axial flow machine includes an airfoil part that has a suction surface and a pressure surface, an endwall as a shroud or a platform, and a fillet that is provided along a connecting portion between the airfoil part and the endwall. The fillet includes a first curved surface formed at least on a leading edge side and a trailing edge side in the airfoil part on the suction surface side and a second curved surface formed in a portion other than a portion where the first curved surface is formed. The second curved surface has a smaller curvature radius than the first curved surface.
Claims19
An airfoil of an axial flow machine comprising:
- an airfoil part that includes a pressure surface and a suction surface;
- an endwall as a shroud or a platform;
- and
- a fillet that is provided along a connecting portion between the airfoil part and the endwall and is formed as a curved surface extending from the airfoil part to the endwall, wherein
- the fillet includes a first curved surface and a second curved surface arranged in series around the airfoil part and along the connecting portion,
- a curvature radius of the second curved surface is smaller than a curvature radius of the first curved surface, and
- the first curved surface is formed at least in respective portions on a leading edge side and a trailing edge side of the airfoil part on a suction surface side of the airfoil part in a region where the fillet is formed, and the second curved surface is formed in a portion of the region other than portions of the region where the first curved surface is formed.
Dependencies are inferred from the claim text.