A centrifugal blower includes a stator housing (14). The stator housing (14) includes a radial contact surface (63) which makes contact with a casing (30) in a radial direction, a circumferential contact surface (62) which makes contact with the casing (30) in a circumferential direction, and an axial contact surface (61) which makes contact with the casing (30) in an axial direction. With such configuration, it is possible to reduce the vibration of the blower by increasing a contact area between the casing (30) and the stator housing (14). Further, the stator housing (14) includes a heat dissipating surface (64). As a result, it is possible to efficiently dissipate the heat, which is generated from the stator (13), from the heat dissipating surface (64) of the stator housing (14) to the gas existing within the wind tunnel (35).
