Abstract: An air blower capable of preventing a deformation of the vane wheel is provided. A cylindrical holder is provided on rotatable shaft. A vane wheel is provided on the outer circumference of the holder. The holder includes a top section including a plurality of first openings at one end thereof in the axial direction, and includes a flange including a plurality of second openings at the other end thereof, and the vane wheel includes first protrusions to be inserted into the first openings of the holder and fixed to the top section by deformed sections protruding from the first openings, and second protrusions to be inserted into the second openings of the holder and fixed to flange by deformed sections protruding from the second openings.

Abstract: A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.

Abstract: An air blower capable of preventing a deformation of the vane wheel is provided. A cylindrical holder is provided on rotatable shaft. A vane wheel is provided on the outer circumference of the holder. The holder includes a top section including a plurality of first openings at one end thereof in the axial direction, and includes a flange including a plurality of second openings at the other end thereof, and the vane wheel includes first protrusions to be inserted into the first openings of the holder and fixed to the top section by deformed sections protruding from the first openings, and second protrusions to be inserted into the second openings of the holder and fixed to flange by deformed sections protruding from the second openings.

Abstract: A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.