| 摘要 |
<p>An axial-flow fan (70) is an axial-flow fan having blades (91) in which recessed parts (101) that are recessed toward the front edges are formed in the rear edges, rounded stress-relieving parts (105) being formed in the positive pressure surface sides and negative pressure surface sides of front-edge-side edge parts of the recessed parts (101) in a cross-sectional view of the blades (91).</p> |
