Fan

The embodiment of the invention provides a fan which comprises a cup part which is configured to be in a cylindrical shape and can rotate with a rotation axis as the center; an impeller part disposed on the outside in the radial direction of the cup part and connected to the cup part; the magnet is arranged on the cup part; the stator is at least partially accommodated in the cup part; a tower part for supporting the stator; an extension portion extending radially outward from one end of the tower portion in the axial direction; and a blocking wall part which extends from the extension part to the cup part in the axial direction and is arranged on the radial outer side of the tower part in the radial direction. According to the water cup, the blocking wall part is arranged, so that the blocking wall part and the cup part form a bent structure, and dust and water vapor can be effectively prevented from entering the water cup. 本申请实施例提供一种风机，所述风机包括：杯部，其被配置为能够以旋转轴线为中心进行旋转的圆筒状；叶轮部，其被配置在所述杯部的径向外侧，与所述杯部连接；磁石，其设置于所述杯部