| 摘要 |
To obtain a blade of a cross-flow fan with which it is possible to provide a cross-flow fan that is highly efficient and that produces little noise even when high loads are applied. A leading-edge portion (42) and a trailing-edge portion (43) of a blade (40) are formed such that the radius R1 of the leading-edge portion (42) is greater than the radius R2 of the trailing-edge portion (43). A base portion (41) of the blade (40) has a maximum thickness ± at a position (Mxp) of maximum thickness located closer to the leading-edge portion (42) than to the trailing-edge portion (43), a thickness ² at an intermediate position (CLm) along a chord length, and a thickness ³ at a position (CL5) set apart from an outer-peripheral end (CLp) of the blade chord by 5% of the chord length CL. The base portion (41) is formed such that a value obtained by dividing the thickness ² by the maximum thickness ± is greater than a value obtained by dividing the thickness ³ by the thickness ². |
