CAJ | 학술논문

对某型号商用空调压缩机在不同频率下工作的噪声进行测试，并分析压缩机的噪声频谱特性。结合实际安装时的限制条件，制定相应的压缩机隔声罩噪声控制方案，利用声学仿真技术预测采用压缩机隔声罩降噪的可行性。经实际声学测试对比，优选两种材料作为隔声罩的主体。实际实验表明，在空调机组左、右、后方三个测点平均降噪约6 dB，在机组正前方降噪量为1 dB到4 dB不等。由此，可确认PVC/PET纤维吸隔声复合材料的隔声罩能有效降低压缩机噪声和空调机组的噪声。
대모형호상용공조압축궤재불동빈솔하공작적조성진행측시，병분석압축궤적조성빈보특성。결합실제안장시적한제조건，제정상응적압축궤격성조조성공제방안，이용성학방진기술예측채용압축궤격성조강조적가행성。경실제성학측시대비，우선량충재료작위격성조적주체。실제실험표명，재공조궤조좌、우、후방삼개측점평균강조약6 dB，재궤조정전방강조량위1 dB도4 dB불등。유차，가학인PVC/PET섬유흡격성복합재료적격성조능유효강저압축궤조성화공조궤조적조성。
The noise of a commercial air-conditioner’s compressor was tested under different operation conditions. The noise spectral characteristic was analyzed. Considering the actual installation restrictions, a noise control method using acoustic enclosure for the compressor was made. Feasibility of the compressor’s acoustic enclosure was forecasted by acous-tic simulation. Two materials, PVC and PET, were chosen for the enclosure through acoustic comparative test. Results of the test show that after the installation of the enclosure, the noise of the measurement points at the left, the right and the rear of the air-conditioner is reduced by 6 dB in average. In front of the air-conditioner, the noise is reduced by 1-4 dB. Thus, it can be concluded that the acoustic enclosure made up of PVC/PET fibrous composite material can effectively reduce the noise of air-conditioners.