TURBOFAN AND INDOOR AIR CONDITIONER EQUIPPED WITH SAME

摘要

Disclosed is an indoor air conditioner (100) equipped with a turbofan (1). The turbofan is made up of blades (4), which have formed, near a blade following edge (4b) on a blade perimeter surface (4c) of the blades (4), a plurality of following edge horizontal grooves (5) of a prescribed length (L2) that reach the blade following edge (4b) in a horizontal direction (within a plane perpendicular to the center of rotation (O)). The following edge horizontal grooves (5) incorporate groove recesses (5a) of a prescribed depth in the blade perimeter surface (4c), and groove communicating parts (5b), which are formed on the terminus of the blade following edge (4b), and which connect to the groove recesses (5a). The following edge horizontal grooves (5) are formed so as to be within the range of a distance (H1) upward from a main shroud (2) and within the range of a distance (H2) downward from a shroud (3).