| 摘要 |
<p>The airfoil member of the present invention is provided with an airfoil body (10), an end wall (20) which is installed at an end part (14) of the airfoil body in a blade span direction and extends so as to intersect in the blade span direction, a fillet portion (40) which smoothly connects the end part of the airfoil body with the end wall, and a cooling channel (50) which allows a cooling medium to circulate inside the airfoil body and the end wall and in which two main channels (52a, 52b, 52c) extending along the blade span direction are connected so as to bend in a folding manner at a return channel (52d, 52e) formed on the end wall side. The return channel is formed so as to run along the fillet portion on a cross section intersecting with a center line of a profile of the airfoil body and also formed in such a manner that the width thereof in the profile thickness direction is greater than the width of the main channel in the profile thickness direction.</p> |
