Electric blower and electric cleaner using same

An electric blower, comprising:

• a motor having a rotary shaft;
• and
• an impeller rotationally driven by the motor, the impeller including:
• a front shroud having a suction opening;
• a rear shroud disposed with a space from the front shroud;
• a plurality of sheet-metal blades fitted to and fixed between a pair of the front shroud and the rear shroud;
• and
• a resin inducer disposed at a center portion of the impeller, the resin inducer including:
• a cone-shaped hub part;
• and
• a plurality of blade parts in a periphery of the hub part, the resin inducer rectifying suction-air flow taken from the suction opening, the resin inducer being divided into two parts in a plane perpendicular to the rotary shaft, the two parts being a first inducer and a second inducer, the first inducer including:
• a ring-shaped first hub part forming the hub part and comprising a first fitting part;
• and
• a plurality of first blade parts forming the blade parts, the first inducer being located upstream close to the suction opening in a passage of the suction-air flow,
• the second inducer including:
• a cone-shaped second hub part forming the hub part and comprising a second fitting part engaging with the first fitting part;
• and
• a plurality of second blade parts forming the blade parts, the second inducer being located downstream farther away from the suction opening than the first inducer in the passage of the suction-air flow,
• the second blade parts and the first blade parts each having a mating surface, the second blade parts and the first blade parts being mated and assembled to each other at the respective mating surfaces, the mating surfaces each having an engaging part for mating the second blade parts and the first blade parts,
• the first hub part being disposed around an outer periphery of the second hub part,
• the second inducer being secured to the rotary shaft by a fastener from a first hub part side,
• the second blade parts and the first blade parts being guided to assemble by the first and the second fitting parts and coupled to each other at the engaging parts,
• wherein
• outer-peripheral blade-tips of the first blade parts are disposed in a proximity of the front shroud, an upper surface of the first hub part is disposed to be proximally covered by a lower surface of the fastener, and a height of the second hub part is one of equal to and larger than a height of the first hub part, with the first hub part disposed around the outer periphery of the second hub part,
• whereby the first inducer is restricted from moving both in an axial direction of the rotary shaft and in a rotational direction of the rotary shaft.