噪声与振动控制2019，Vol.39Issue(2)：234-238,5.DOI:10.3969/j.issn.1006-1355.2019.02.045
往复式冰箱压缩机噪声测试与消声分析
Noise Test and Reduction Analysis of Refrigerator Compressors
摘要
Abstract
In order to reduce the noise of refrigerator compressors in operation, the noise spectrum test and sound source identification of a compressor under five different conditions are carried out. It is shown that the aerodynamic noise is the main noise source, the mechanical noise is the secondary noise source, and the electromagnetic noise has little effect on the compressor. The aerodynamic noise has the characteristic of broadband distribution, which is caused by airflow fluctuation and airflow injection noises from the exhaust pipe. The peak frequency of the noise is 2 000 Hz, corresponding to the noise value of 49.3 dB (A). In addition, the compressor excitation frequency causes low frequency vibration of the exhaust pipe. According to the analysis results, some improvement methods, such as installing muffler and damping spring on the exhaust pipe and so on, are proposed. Compared with the test results before the improvement, the peak noise at 2 000 Hz is reduced by 13.8 dB(A) and the overall compressor noise is reduced by 1.83 dB(A).关键词
声学/冰箱压缩机/声源识别/排气管消声器Key words
acoustics/ refrigerator compressor/ sound source identification/ exhaust pipe muffler分类
通用工业技术引用本文复制引用
兰同宇,王孚懋,孙海滨,韦艳娟,张玉环..往复式冰箱压缩机噪声测试与消声分析[J].噪声与振动控制,2019,39(2):234-238,5.基金项目
山东省重点研发计划资助项目(2017GGX203005) （2017GGX203005）
中国煤炭工业协会科学技术研究资助项目(MTKJ2015-249) （MTKJ2015-249）
