| 摘要 |
PROBLEM TO BE SOLVED: To provide a quiet blower with a centrifugal fan. SOLUTION: A blower is equipped with a casing which defines a fan accommodating space for accommodating a centrifugal fan 30, and an electric motor accommodating space. The fan accommodating space and the electric motor accommodating space are separated by a partition wall 10C, in which a partition wall through hole 10c is formed. A base 31 forming the centrifugal fan 30 is provided with a base through hole 31a. The partition wall 10C through hole 10c has the circumferential length increasing part for gradually increasing toward the fan accommodating part 10a from the electric motor accommodating space 10b, as the circumferential length of the partition wall through hole 10c in the circumferential direction of the base 31 of the centrifugal fan 30 goes to the opening end 10f opening to the fan accommodating part 10a of the partition wall through hole 10c from the opening end 10e opening to the electric motor accommodating space 10b. COPYRIGHT: (C)2005,JPO&NCIPI
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