Cross-flow fan and air conditioner equipped with same

摘要

A crossflow fan includes an impeller formed by plate-like blades 42. Each blade 42 is inclined such that the outer edge 42a is located on the leading side of the inner edge 42d with respect to the rotation direction of the impeller 41. The face of each blade 42 that is located on the leading side of the rotation direction forms a positive pressure surface 42p, and a face located on the trailing side forms a negative pressure surface 42q. Notches 42b are formed at the outer edge 42a of the blade 42. The notches 42b are arranged at predetermined intervals along the rotation axis of the impeller. A basic shape section 42c is formed between each adjacent pair of the notches 42b. The blade thickness L2 in the vicinity of the bottom 42y of each notch 42b is smaller than the blade thickness of the basic shape section 42c adjacent to the notch 42b.