| 摘要 |
A cross-flow fan (8) includes an impeller (8a) and a shaft (8f, 12a). The impeller includes a plurality of support plates (8b) and a plurality of blades (8c). The blades are different in a blade cross section orthogonal to an impeller rotational axis, and each have a plurality of regions (8ca, 8cb, 8cc) arranged in a direction of the impeller rotational axis and a coupling portion (8ce) formed so as to couple the plurality of regions to each other. A rib is formed on the coupling portion, or formed in a region adjacent to the coupling portion within a range separated away from the coupling portion by up to 20% of a length of the region adjacent to the coupling portion in the rotational axis direction. |
