| 摘要 |
<p>To provide an axial flow fan configured to allow leakage flows in regions near rear edges of bent portions formed by bending outer peripheries of blades towards negative pressure surfaces to smoothly flow out to reduce the vortex scale of the leakage flows themselves and to be able to effectively control turbulence of the flows. An axial flow fan includes a bellmouth (5) and blades (13), with outer peripheries of the blades (13) being bent towards negative pressure surfaces (13e), wherein in regions near rear edges of bent portions (13c) that are bent towards the negative pressure surfaces (13e), there are disposed second bent portions (13f) formed by bending part of the bent portions (13c) further towards the negative pressure surfaces (13e).</p> |
