消声器一般分阻性消声器和抗性消声器两大类。近些年来,随着工业技术的发展,对消声器提出了一些新的要求。例如,希望消声器除了能够消除气流噪声外,还能净化排气中的有害气体;消声器体积要小,但还要保持较高的消声效果;能够适用在各种高温高速气体下工作等等。根据这些要求国内 Mufflers are generally divided into two categories of resistive muffler and muffler. In recent years, with the development of industrial technology, some new requirements have been put forward on the muffler. For example, it is hoped that the muffler can not only eliminate the airflow noise but also purify the harmful gas in the exhaust gas; the muffler should be smaller in volume but still maintain a higher muffling effect; and can work under various high-temperature and high-speed gases and the like. According to these requirements domestically