| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller of a blower for air-conditioning which comprises two pieces of impeller blades from the viewpoint of the improvement in the fan efficiency, and reduce rotation noise generated by the impeller. SOLUTION: A main wing 2 of the impeller of the blower for air-conditioning, which comprises two pieces of wings, is provided, and a chord length on the outer peripheral side of the main wing 2 is larger than that on the hub side. Then a nearly fan-shaped auxiliary wing 3 comprising two pieces of wings is provided between the main wings 2. The length of the auxiliary wing 3 in the radius direction is smaller than the length of the main wing 2 in the radius direction, and the height of the impeller blade of the auxiliary wing 3 on the outer peripheral side is lower than the height of the impeller blade of the main wing at the same circumference. COPYRIGHT: (C)2006,JPO&NCIPI
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