| 摘要 |
PROBLEM TO BE SOLVED: To improve the air supply efficiency of a multiblade blower, such as a crossflow fan, etc., and to reduce the generation of air supply noise. SOLUTION: A multiblade blower 9 is provided with an impeller 9a consisting of a number of blades 19, 19, etc., juxtaposed at given pitches in a peripheral direction. A camber line radius R2 on the outer periphery C2 of the impeller consisting of the blades 19, 19, etc., is increased to a value higher than a camber line radius R1 on the inner periphery C1 side of the impeller.
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