| 摘要 |
PROBLEM TO BE SOLVED: To provide blades of a transverse flow fan allowing great reduction of rotational frequency noise of the blades of the transverse flow fan, and vibration and noise in a low frequency band region due to arrangement unbal ance of the blades of the transverse flow fan. SOLUTION: In this transverse flow fan of an air conditioner, whole many blades are divided into many groups with same number of blades. The blades in each group are arranged so that angle between any adjacent blades gradually increases, and arrangement patterns of blades in respective groups are the same as each other. |
