CONNECTION CONSTITUTING MEMBER OF CROSS-FLOW FAN, CROSS-FLOW FAN AND INDOOR UNIT OF AIR CONDITIONER

PROBLEM TO BE SOLVED: To solve the problems of chipping a corner part of a blade and a projecting ring, generating an abnormal sound when blowing air, and reducing an air-blowing quantity of a cross-flow fan when the height of the projecting ring cuts off a part of an air duct, since a conventional connection constituting member causes a hitch of the blade in the corner part where a wall surface of a welding groove contacts with the tapered projecting ring. SOLUTION: This connection constituting member of the cross-flow fan has the blade projected on one surface side of an annular ring-shaped plate-like support member, the welding groove arranged on an opposite surface of a surface of projecting the blade, having a bottom surface of a similar figure as a cross-sectional shape of the blade and forming a calling-in wall surface of inclining the wall surface whole periphery at an inclination α, and the annular ring-shaped projecting ring arranged on a surface for forming the welding groove of the plate-like support member, having a lower end part connecting with the inner peripheral surface of the calling-in wall surface, having on the outer periphery an inclined surface of expanding a tip part of the blade up to the welding groove by inclining at an inclination β and formed of a larger width in the radial direction than the height of the plate-like support member. COPYRIGHT: (C)2009,JPO&INPIT