PROPELLER FAN, AIR BLOWING EQUIPMENT, OUTDOOR UNIT

摘要

In a shape projected onto a surface that is perpendicular to a rotation axis, a leading edge (7) of a blade (5) has a leading edge convex section (15) that protrudes rearward in a fan rotation direction. A trailing edge (9) of the blade has a leading edge convex section (17) that protrudes rearward in the fan rotation direction. The inner peripheral side of a vertex (P) of the leading edge convex section moves ahead of the vertex (P) in the fan rotation direction. The diameter (Rq) at the position of a vertex (Q) of the trailing edge convex section is larger than the diameter (Rp) at the position of the vertex (P). The diameter (Rq) at the position of the vertex (Q) is larger than an intermediate radius (Rm) between the diameter (Ro) of the outer peripheral edge and the diameter (Ri) of the inner peripheral edge.