| 摘要 |
A centrifugal fan device includes an impeller (20A) supported to rotate about a center axis (9A) extending in an up-down direction; a motor (10A) arranged to rotate the impeller (20A); and a housing (30A) arranged to surround the impeller (20A). The housing (30A) includes an intake portion (71A) positioned above the impeller (20A) and an exhaust portion (72A) positioned radially outward of the impeller (20A). The housing (30A) further includes a plurality of ribs (73A) protruding from an inner surface of the intake portion (71A) toward a shroud (62; 62A). |
