Blower

A blower comprising:

• a scroll housing through which air flows;
• a motor which is secured on the scroll housing and has a rotating shaft 71 with circular cross section;
• a resin-made stator which is press-fitted on the rotating shaft;
• and
• a resin-made centrifugal fan which is housed in the scroll housing and has a boss 61 inserted on the stator, a cone extending from the boss, and a plurality of blades extending from an outer circumferential part of the cone,
• wherein the stator is a tubular member and includes:
• a stator first end face which is close to a tip of the rotating shaft,
• a stator second end face which is far from the tip of the rotating shaft,
• a stator outer circumferential face which is formed between the stator first end face and the stator second end face,
• a stator through hole in which the rotating shaft is inserted, and
• a concave or convex stator engagement part which is formed in the stator outer circumferential face,
• wherein the boss is a tubular member and includes:
• a boss through hole in which the stator is inserted, and
• a boss engagement part which is formed in an inner circumferential face of the boss through hole and engages with the stator engagement part, and
• wherein the stator has:
• a first weld face which is disposed between the stator first end face and the stator second end face so as to extend substantially perpendicular to an axial direction of the rotating shaft,
• a second weld face which is disposed between the stator first end face and the first weld face so as to extend in the axial direction of the rotating shaft, and
• a third weld face which is disposed between the stator second end face and the first weld face so as to extend in the axial direction of the rotating shaft and to be located at a different position from the second weld face in a circumferential direction.