FAN, MOLD FOR MOLDING, AND FLUID FEEDING DEVICE

摘要

Provided is a cross-flow fan having fan blades (21) provided at intervals in the circumferential direction. The fan blades (21) each have an inner edge section (27) which is disposed on the inner peripheral side and an outer edge section (26) which is disposed on the outer peripheral side. The fan blades (21) each comprises a blade surface (23) composed of a positive-pressure surface (25) and a negative-pressure surface (24) which extend between the inner edge section (27) and the outer edge section (26). The cross-section of each of the fan blades (21) is shaped in such a manner that the thick section of the fan blade (21), said thick section being that at which the distance between the positive-pressure surface (25) and the negative-pressure surface (24) is maximum, is disposed offset to the inner edge section (27). A recessed section (41) recessed from the blade surface (23) is formed at a position closer to the inner edge section (27), at which the thick section is disposed, than the outer edge section (26). The configuration provides the fan with high air blowing performance. Also provided are a molding mold and a fluid feeding device.