| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial flow fan which suppresses an absolute amount of power consumption in a region of a middle wind volume at the efficiency of static pressure equal to or higher than a conventional fan, and can efficiently supply a wind to the vicinity of a center.SOLUTION: An axial flow fan motor comprises: a casing outer frame; an impeller which is arranged at a suction port side of the casing outer frame, and has a blade arranged at an external periphery of a rotor housing; a rotor shaft being a rotating shaft arranged in a center of the impeller; a bearing housing which is arranged at an external periphery of the rotor shaft at the inside of the rotor housing, and rotatably supports the rotor shaft; and a base part hub which is arranged at a blow-out port side of the casing outer frame, and fixes the bearing housing. In a cross section view along the rotating shaft, the base part hub has an external peripheral part which at least partially inclines to the rotating shaft side at an angle of &thetas;1 toward the blow-out port side with respect to a linear line parallel with the rotating shaft, and the casing outer frame has an internal peripheral part which at least partially inclines to the rotating shaft side at an angle of &thetas;2 toward the blow-out port side with respect to the linear line parallel with the rotating shaft. |
