Outdoor machine for air conditioner

TLDR: In this paper, the upper and lower parts of the suction side end members of a bell mouth installed to the front side of a main member with a top plate and a bottom plate so that they may surround over the outer periphery of a motor-driven fan, and expanding gradually the side member to the SUction side.

Abstract: PURPOSE:To improve air suction efficiency, by connecting the upper part and the lower part of the suction side end members of a bell mouth installed to the front side of a main member with a top plate and a bottom plate so that they may surround over the outer periphery of a motor-driven fan, and expanding gradually the side member to the suction side. CONSTITUTION:A bell mouth 12 is circular or oval in cross sectional view. The bell mouth is gradually reduced into a smaller-size as it approaches a fan 8 from a front face 19 of main body 1, thereby forming a first section A. Then is formed a second section B which gradually expands, then surrounds over the outer periphery of the fan 8 in succession with the first section A. The side end member of a discharge nozzle 6 of the section A is connected with the periphery of the discharge nozzle 6, while the upper and lower parts of the suction side end member of the section B are connected with a top plate and a bottom plate and the side members are connected with a neighboring part of a suction nozzle 5 of a heat exchanger 7 and a soundproof plate 10. This construction makes it possible to improve ventilation efficiency (air suction efficiency) of a motor-driven fan 8.