BLOWER

[Object] To obtain a fixing structure of a blower unit that improves the flexibility of the mount directions of a fixing member in the blower unit in which the fixing member is mounted onto a rotating shaft having a circular cross section and the idle running of a multi-blade impeller is prevented by the fixing member. [Solution] In a blower unit including a resinous fixing member 10 to which a rotating shaft 1 having a circular cross section has been fitted and a resinous fan 60 having a boss 30 attached to the fixing member 10, the fixing member 10 includes a fixing member through hole 14 to which the rotating shaft 1 is press-fitted, a fixing member first engagement part 15 that is engaged with a boss engagement part 35 provided in the boss 30 in a first mount attitude in which the rotating shaft 1 is press-fitted from one side of the fixing member through hole 14, and a fixing member second engagement part 16 that is engaged with the boss engagement part 35 in a second mount attitude in which the rotating shaft 1 is press-fitted from the other side of the fixing member through hole 14.