目前国内生产的风冷式2V-6/8型空气压缩机是多声源动力装置。其噪声声压级高达90～93分贝（A）,严重污染环境,严重影响空压机产品质量。在多个声源中其进气噪声功率约占整机总噪声功率的20％以上,是空压机主要噪声源之一。本文通过实验研究,针对进气噪声具有低频且有峰值的特性,设计两种扩张室共振腔复合消声器,收到良好的降噪效果。 At present, the domestic production of air-cooled 2V-6/8 air compressor is a multi-source power plant. The noise sound pressure level as high as 90 to 93 dB (A), seriously pollute the environment, seriously affecting the quality of air compressor products. In many sound sources, its intake noise power accounts for about 20% of the total noise power of the machine, which is one of the main noise sources of air compressor. In this paper, through experimental research, aiming at the characteristics of low frequency and peak value of intake noise, two kinds of expansion chamber resonant muffler are designed and the noise reduction effect is well received.