Electric blower, electric vacuum cleaner, and hand dryer

An electric blower comprising:

• a centrifugal impeller including a hub and a plurality of rotor blades;
• and
• an electric motor unit configured to rotate the centrifugal impeller,
• the hub having a circular outer shape in plan view,
• the hub comprising:
• a central portion protruding in a direction of a rotational axis of the centrifugal impeller;
• and
• a surface portion inclined from the central portion toward an outer circumferential portion of the hub,
• the plurality of rotor blades comprising:
• a first rotor blade joined to the surface portion of the hub;
• and
• a second rotor blade provided apart from the first rotor blade in a circumferential direction of the hub and joined to the surface portion,
• the electric blower further comprising
• a fan cover located outside the plurality of rotor blades in the direction of the rotational axis of the centrifugal impeller to cover the centrifugal impeller,
• the first rotor blade and the second rotor blade each including:
• a lower edge joined to the surface portion of the hub;
• an upper edge facing the fan cover;
• and
• an inner circumferential edge connecting the upper edge and the lower edge,
• a distance from the inner circumferential edge of the second rotor blade to the outer circumferential portion of the hub being shorter than a distance from the inner circumferential edge of the first rotor blade to the outer circumferential portion of the hub in a direction along the surface portion,
• the inner circumferential edge of the second rotor blade including:
• a first portion connected to the lower edge;
• a second portion connected to the upper edge;
• and
• a third portion located between the first portion and the second portion, and
• among the first portion, the second portion, and the third portion, the first portion being located closest to the outer circumferential portion of the hub in the direction along the surface portion,
• wherein the first portion is provided more downstream in an air flow direction than the second portion and the third portion, and
• wherein, in a radial direction perpendicular to the rotational axis, an outermost circumferential portion of the first rotor blade is located outside an outermost circumferential portion of the second rotor blade.