| 摘要 |
PROBLEM TO BE SOLVED: To suppress the increase of the blast noise caused by the influence of an electric equipment storage box on a bell mouth, in an air conditioner with a built-in centrifugal fan. SOLUTION: In the air conditioner where a centrifugal fan 11 for blast possessing, a shroud 6 corresponding to a bell mouth 15 capably of relative rotation at a specified interval with the bell mouth 15 is provided, and a specified volume member 20 is installed at one part of the vacant space on the bell mouth 15. Auxiliary members 21, 16a, 15c, and 15e in the relation of dimensions and shape roughly equal to the dimension and shape relation between the specified volume member concerned and the end 6a on air suction side of the above shroud 6 are installed in the left vacant space excluding the above specified volume member of the above bell mouth 15, so that the leak flow state between the shroud 6 and the bell mouth 15 may be equal all around. |
