密閉型圧縮機の低騒音化, 低振動化のための研究 第5報 : 圧縮機の防音構造 [in Japanese] Experimental Study for Reduction of Noises and Vibrations in Hermetic Type Compressor (5th Report : Enclosure Construction for Compressor) [in Japanese]
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In order to further reduce the noises from the outdoor-unit, sound absorption and obstruction characteristics in the sound absorption structuring section are examined and the relationship between noises and cavity resonances in the interior space is clarified. The effects of the aperture prepared in the sound absorption structuring section are carefully examined, thus resulting in a large influence on sound absorption, such as the materials used for sound damping. A domestic use air-conditioner is installed in an ordinary house and the radiation of noises produced by the indoor-units and outdoor-units during cooling operation is measured. Quality of outdoor-unit noise for a domestic use air-conditioner is described.
Trans.JSRAE 14(3), 245-253, 1997-11-01
Japan Society of Refrigerating and Air Conditioning Engineers