AXIAL FLOW FAN FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To suppress a blast air from flowing in the outer diametrical direction without flowing axially in an axial flow fan. SOLUTION: The front edge part 212b of a blade 211 is so constituted as to be deviated in the upstream side of an air flow of a shaft end surface 211a viewed from a direction orthogonal to the axial direction of a boss part 211 and a part from a root side of the blade 212 to the shaft end surface 211a is connected by a smooth curved surface 213. This constitution can distribute the air from the side of the shaft end surface 211a to the root side of the blade 212 so that the resistance between the blade surface and the air in the root side of the blade 212 is reduced by the air flowing from the side of the shaft end surface 211a toward the root side of the blade 212 so as to suppress a stall in the root side of the blade 212. The air in the front side of the boss part 211 is thus efficiently guided in the outward direction (blade 212) so as to suppress the lowering of the blast quantity and the fan efficiency of a blower 200.