| 摘要 |
PROBLEM TO BE SOLVED: To provide a blower that strikes a balance between a noise reduction effect and an inherent blowing performance of a vane.SOLUTION: An axial flow blower (10) includes an electric motor (300), and a blower fan (1) having a hub (4) attached to the electric motor (300) and a plurality of blades (3) provided at the hub (4) in a radial manner, wherein a negative pressure surface of a vane leading edge (6) of the blade (3), comprised of the negative pressure surface and a positive pressure surface, is provided with a plurality of triangle shape projections which have vertexes along the vane leading edge (6), and the positive pressure surface of the vane leading edge (6) of the blade (3) is not provided with the triangle shape projections but is a smooth continuous surface. |
