| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial blower reducing noise without increasing axial dimensions of the axial blower. SOLUTION: The axial blower is provided with a boss 2 driven and rotated by a motor and a plurality of rotors 1 radially mounted to the boss 2 and blasting air in a rotary shaft 3 direction. A chord center line Pr1 in a first region from the boss 2 to a bending point Pw of a radial direction intermediate part of the rotor 1 is inclined to an upstream side by a fixed forward inclination angleδzw larger than 0°. The chord center line Pr1 in a second region from the bending point Pw to a rotor outer circumference is inclined to the upstream side by an angle larger than the first forward inclination angleδzw, and a forward inclination angleδzs of a tangent 15 of the chord center line Pr1 at the rotor outer circumference is set in a range of 30°-40°. COPYRIGHT: (C)2008,JPO&INPIT
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