Patent ID: 8092181

Claim:
A resin cross flow fan comprising: a plurality of blades annually disposed about a rotation axis; and a plurality of circular disks disposed spaced apart in a direction of the rotation axis, the circular disks being including insertion portions, each of the insertion portions having a hole or a groove into which each of the blades is inserted, and projecting portions projecting from a periphery of the insertion portions in the direction of the rotation axis, each of the projecting portions being formed so as to extend along one circumferential side of one of the insertion portions, and each of the blades being fixed to the projecting portions by laser welding, pressing portions arranged to press the blades circumferentially toward the projecting portions in a state in which the blades are inserted into the insertion portions, with the pressing portions being arranged on opposite circumferential sides of the insertion openings from the projecting portions to circumferentially press the blades toward the projecting portions.