Centrifugal blower

A centrifugal blower that blows air, comprising:

• a centrifugal fan that rotates with a rotation shaft to draw in air in an axial direction of the rotation shaft and to blow out the air outward in a radial direction of the rotation shaft;
• and
• a case that houses the centrifugal fan, the case having an intake port to draw in air into the centrifugal fan, wherein
• the centrifugal fan includes a plurality of blades arranged around an axis center of the rotation shaft, and an intake side plate shaped in a ring that connects ends of the plurality of blades adjacent to the intake port to each other,
• the case has an intake side case portion facing the intake side plate with a predetermined gap, the intake side case portion having the intake port,
• each of the plurality of blades has
• a positive pressure surface extending along the axial direction,
• a negative pressure surface opposite to the positive pressure surface, and
• an intake side edge portion extending from the intake side plate inward in the radial direction,
• the intake side edge portion has a negative pressure side inclined portion inclined to the negative pressure surface with respect to the axial direction, and
• the negative pressure side inclined portion has an inclination length in the axial direction, and the inclination length is larger in a proximal portion of the intake side edge portion adjacent to the intake side plate than in a radially innermost portion of the intake side edge portion located at an innermost side in the radial direction.