| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiblade fan capable of increasing the quantity of air flowing into a space between blades and thereby improving blowing performance. SOLUTION: A protrusion 19 protruding toward a rotational direction is provided on a flow-in end part of the blade 13. By straightening the efficiency of the protrusion, the air flow-in quantity to the space 16 between the blades increases, and the blowing performance of the multiblade fan 10 is improved. COPYRIGHT: (C)2004,JPO
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