| 摘要 |
PROBLEM TO BE SOLVED: To restrain hairs, etc. sucked from a suction port from becoming entangled with an output shaft of a drive motor.SOLUTION: An external surface 61 of a boss part 60 of a propeller fan 50 includes: an upstream end part 62; an upstream surface 64 extending outward in a rotation radius direction as going toward the downstream side; a downstream part 67 located downstream of a downstream end 65 of the upstream surface 64; and a downstream surface 66 connecting the downstream end 65 of the upstream surface 64 to the downstream part 67. The downstream surface 66 has a shape extending in a direction parallel to a rotation axis 80. |
