| 摘要 |
PURPOSE:To reduce noises of high frequency sounds by concentrically providing cylinder sections squeezing a part of a blowoff air flow in relation to disk-like plates so as to prevent disturbances from occurring in cross flow fans. CONSTITUTION:Cross flow fans 10, 11 are constituted with disk-like plates 16 arranged in parallel and a plurality of blades 17, and a fan cup 19 having cylinder sections 20, 21, 22 is concentrically fitted to the side of a plate 16. Accordingly, the air flow discharged from the cross flow fans 10, 11 is curved toward the center of the cylinder sections 20, 21, 22, thus disturbances are prevented from occurring. |
