【摘要】 本文在对食堂离心风机噪声测定的基础上,详细分析了其频谱及测试结果,并提出了相应的降噪措施,设计制作了一套消声装置,使噪声得到大幅度下降,改善了居民生活环境和工人操作条件。更多还原

【Abstract】 We make an analysis on the frequency spectrum and the test result after measuning the noise raised from a centrifugal fan used in a mess hall. This paper advances a measure to suppress the noise. We have designed and made a suppressing noise device. The Noise has been greatly lowered after the use of the device, and the residential enviroment and the worker’s working conditions are improved.更多还原