| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial blower capable of lowering blowing noises while reducing the peeling of the flow to be generated in a blade negative pressure surface and improved in molding property thereof at a low cost. SOLUTION: Plural blades 13 are arranged in the periphery of a boss part 12, to which a rotary shaft is fixed. Plural streamlined ribs 14 smoothly continued from a front edge thereof toward a blade rear edge part 13d are arranged in each blade 13 at a negative pressure surface 13a side front edge part 13c along the outline of the front edge with the predetermined space in the radial direction of a blower. These streamlined ribs 14 are arranged in plural lines 14a, 14b with the predetermined space in the circumferential direction of the blower.
|
