Turbofan and manufacturing method thereof

It discloses a turbo fan, and a manufacturing method to reduce the manufacturing defect rate exhibit excellent blowing performance, as well as to increase productivity. Turbofan according to the invention and the shroud that guides the intake air, and arranged to face the shroud coupling shaft in the center and the outer diameter is less than or connected to the same first rotation plate and, once the shroud than the shroud diameter and the other end is the connected to the first rotating plate and to the part of the inner diameter is combined with a plurality of blades, and the outer side of the first rotating disk blade integrally molded with the shroud and the first rotation plate and a second rotating plate in contact with the outer diameter portion of the first rotating plate .