FAN GUARD FOR AIR SUPPLY UNIT

摘要

PROBLEM TO BE SOLVED: To suppress a pressure loss and noise and maintain a high rigidity in the direction of thickness in a fan guard for an air supply unit. SOLUTION: The fan guard (18) of an outdoor unit is provided with an outer frame, a plurality of radial ribs (27) and a plurality of annular ribs (28). The outer frame is arranged in the outer periphery of an upper cover member for an air outlet port. The plural radial ribs (27) are bent radially outward from a part near the central part of the outer frame (26) in the rotating direction of an air supply fan. The plural annular ribs (28) are formed integrally with the radial ribs (27) and radially and concentrically arranged at prescribed intervals about the axis of rotation of the air supply fan. At least the outer peripheral sides of the ribs are inclined radially outward along the air supply flow of the air supply fan.