Patent ID: 11920496
Assignee: DOOSAN ENERBILITY CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An airfoil comprising:
a suction side forming a curved surface convexly protruding outward;
a pressure side forming a curved surface concavely recessed toward the suction side;
a leading edge connecting the suction side and the pressure side and formed at a front end of the airfoil;
a trailing edge connecting the suction side and the pressure side and formed at a rear end of the airfoil;
a first cooling passage allowing a first cooling fluid introduced from the bottom of the leading edge to flow into a first serpentine channel formed on the pressure side, and to be then discharged to the rear of the trailing edge; and
a second cooling passage allowing a second cooling fluid introduced from the bottom of the suction side to be divided and flow into at least two second serpentine channels formed on the suction side, and allowing the divided cooling fluids introduced into the at least two second serpentine channels to be joined at the bottom thereof and to be then discharged to the rear of the trailing edge.