| 摘要 |
PROBLEM TO BE SOLVED: To provide a straightening vane for an impeller, mounted to the impeller for a centrifugal blower to reduce noise of the centrifugal blower. SOLUTION: The impeller 4 is provided with the main plate 41 formed in disk shape, a plurality of vanes 42 annularly erected on the main plate 41, and top plates 43 arranged opposedly to the main plate 41 to fix the respective vanes 42 together with the main plate 41. The straightening vane 5 is mounted on the main plate 41 of the impeller 4 so that the center axis is coaxial with the rotation axis of the main plate 41. The straightening vane 5 is formed in conical shape with the tip part projecting onto the top plate 43 side in the mounted state. COPYRIGHT: (C)2004,JPO
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