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在消声器设计中,气流速度对其消声性能的影响是一个不容忽视的重要问题,已引起了人们的高度重视.在这方面,国内外已发表了许多专题论述.但是,纵观这些文献可以发现,实验研究的对象大部分是排气消声器,即气流方向与声传播方向相同的情形.而气流对进气消声器消声性能的影响,即气流方向与声传播方向相反的情形,则所见资料较少.在噪声控制工程中,有许多机器如空压机和鼓风机等,均需设计进气消声器,因此探讨进气口消声器消声量随气流速度的变化规律,以此来指导进气口消声器的设计就很有必要.
In the muffler design, the influence of the air velocity on its anechoic performance is an important issue that can not be ignored, which has aroused people’s attention. In this respect, many theses have been published at home and abroad. However, It is found that most of the experimental research is exhaust muffler, that is, the direction of the airflow is the same as the direction of the sound propagation, and the influence of the airflow on the muffling performance of the intake silencer, that is, the direction of the airflow is opposite to the direction of the sound propagation Less data.In the noise control project, there are many machines such as air compressors and blowers, etc., are required to design intake muffler, muffler inlet muffler volume with the air velocity changes, in order to guide the intake Muffler mouth design is necessary.