Blower and centrifugal fan

The utility model provides an air feeder and a centrifugal fan, and the air feeder is provided with an impeller which rotates with a central axis extending in the vertical direction as the center; a motor that rotates the impeller; and a support member that supports the motor, the support member having: a base section on which the motor is provided; a plurality of attachment parts which are disposed further to the outside in the radial direction than the impeller; and a plurality of arm sections extending radially outward from the base section and connected to the attachment section, the blower being characterized in that the arm sections have narrow sections having a narrowed width in the circumferential direction. 本实用新型提供送风机和离心风扇，该送风机具有：叶轮，其以在上下方向上延伸的中心轴线为中心进行旋转；马达，其使所述叶轮旋转；以及支承部件，其对所述马达进行支承，所述支承部件具有：基座部，其设置有所述马达；多个安装部，它们配置在比所述叶轮靠径向外侧的位置；以及多个臂部，它们从所述基座部向径向外侧延伸并与所述安装部连结，该送风机的特征在于，所述臂部具有周向的宽度变窄的狭窄部。