| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal fan with drip-proof structure improving drip-proofness with simple structure, without using labyrinth structure or silicon potting and without restriction by a mounting posture. SOLUTION: The centrifugal fan having an annular gutter shape part opened to an outer peripheral side and attached and formed integrally with a casing side wall or a blade retaining part surface, is disposed in a space between a casing side wall inner face and a blade retaining part constituting a multiblade impeller. COPYRIGHT: (C)2009,JPO&INPIT
|
