| 摘要 |
[Object] It is an object to obtain a centrifugal fan or the like resistant to an external pressure. [Solution] A centrifugal fan includes a main plate (3) fixed to a rotating shaft of a drive unit, a shroud (1) having an air suction port (1a), and a plurality of blades (2) disposed between the main plate (3) and the shroud (1). A rib (10) for reinforcement is formed in each of the blades (2). Deformation due to an external pressure can be suppressed, the main plate (3), the shroud (1), and the blades (2) are firmly fixed to each other, and a decrease in reliability, generation of noise, and the like due to deformation are suppressed. |
