| 摘要 |
<p>The disclosed crossflow fan is provided with a plurality of fan blades (21) that are provided in the circumferential direction with mutually intervening gaps. The fan blades (21) each have an inner edge (26) disposed at the inner periphery and at which air flows in and out, and an outer edge (27) disposed at the outer periphery and at which air flows in and out. A wing surface (23) extending between the inner edge (26) and the outer edge (27) is formed on each fan blade (21). Each wing surface (23) comprises a positive pressure surface (25) disposed on the side of the direction of rotation of the crossflow fan, and a negative pressure surface (24) disposed on the reverse side of the positive pressure surface (25). When sectioned in a plane that is perpendicular to the axis of rotation of the crossflow fan (10), each fan blade (21) has an airfoil profile wherein depressions (57, 56) are formed on the positive pressure surface (25) and the negative pressure surface (24). A plurality of depressions (57, 57p, 57q) are formed on the positive pressure surface (25). By means of this configuration, it is possible to provide a crossflow fan exhibiting an excellent ability to blow air, a molding die used in the production of this crossflow fan, and a fluid feeding device provided with this crossflow fan.</p> |
