| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a centrifugal blower capable of suppressing decrease in fan efficiency caused by a leak flow. <P>SOLUTION: The centrifugal blower 51 includes an impeller 23 and a bell mouth 25. The bell mouth 25 has a plurality of walls 27 on the outer peripheral surface 25s thereof, and the walls are arranged at predetermined intervals in the circumferential direction and raised from the outer peripheral surface 25s. Each wall 27 is parallel to the axial direction A and the radial direction of the bell mouth 25. A portion 271 at a radial outer side of each wall 27 is positioned closer to a rear side R in the axial direction A than a facing portion 273. <P>COPYRIGHT: (C)2013,JPO&INPIT |
