| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial fan capable of making a leak flow in a region near a trailing edge of a bent part which is bent to a negative pressure face side of a blade outer periphery to flow out smoothly and making a vortex scale of the leak flow itself small while effectively suppressing its turbulence. SOLUTION: The axial fan has a bellmouth 5 and the outer periphery of the blade 13 is bent to the negative pressure face 13e side. In the region near a trailing edge of the bent part 13c to the negative pressure face 13e side, a second bent part 13f which is a part of the bent part 13c further bent to the negative pressure face 13e side. With such a construction, by the existence of the second bent part 13f, the leak flow mentioned above can be made to flow out smoothly, its vortex diameter can be made small, and the turbulence in the flow can be suppressed. COPYRIGHT: (C)2007,JPO&INPIT
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