AIR BLOWER

PROBLEM TO BE SOLVED: To provide a small sized air blower with low noise by mounting two same shaped front and rear step axial impellers on both side of a rotary shaft of double axial motor supported in a casing by plurality of installing legs, and arranging stationary blades for rectifying turning flow by the front step axial flow impeller on respective installing legs. SOLUTION: An air blower in a ventilating air blower and an air conditioner suspended and fixed to an anchor bolt suspended from a space and the like in the ceiling is formed by mounting two same shaped front and rear step axial flow impellers 5, 6 o both sides of a rotary shaft of a double axial motor 4 supported in a casing 2 by eight installing legs 3. A connecting port parts 9 for composing a suction port 7 and a blowout port 8 are fitted to both ends of the casing 2, and a duct is externally fitted. In this case, a front step stationary blade 17 and a rear step stationary blade 18 are integratedly formed with the front step axial flow impeller 5 side and the rear step axial flow impeller 6 side of each installing leg 3, and the stationary blades 17, 18 are respectively inclined opposite to rotational directions of respective axial flow impellers 5, 6.