| 摘要 |
PROBLEM TO BE SOLVED: To provide a blade structure of an impeller and the like for effectively suppressing vibration generated in a blade of a turbine impeller. SOLUTION: In this structure of a blade B of the impeller of a radial turbine, a cross section including a hub and a tip is shaped to be gradually bent in the circumference direction of the impeller from the hub to the tip. The cross section along a blade chord direction is formed in the position gradually shifted toward the blade chord in the vicinity of the trailing edge from the position along the radial direction of the impeller as it goes from the hub to the tip. COPYRIGHT: (C)2008,JPO&INPIT
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