| 摘要 |
PROBLEM TO BE SOLVED: To attenuate noise of a heat exchanging unit by damming the air delivered from a centrifugal fan with a control plate having a smooth curved surface and introducing the air to each heat exchanger through Coanda effect thereby feeding the delivered air smoothly to the heat exchanger. SOLUTION: A control plate 211 is fixed only to the vicinity of minimum gap between a centrifugal fan 5 and the linear section 9a of a heat exchanger 9 on the suction side thereof. The control plate 211 has a smooth curved surface including a primary side face 21a for damming the air delivered from the centrifugal fan 5, and a secondary side face 21b for introducing the air to the heat exchanger 9 through Coanda effect. |
