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对一个实用离心风机用实验系统地研究了在不同风舌间隙条件下，声学共振器的空 穴长度、穿孔率和孔径对风机噪声及气动力性能的影响，得到了良好的隆噪效果。还提 出一种解析模型来建立共振频率与共振器几何参数的关系式，该式己为现有的一些实验 结果所证实。
The effect of cavity length, perforation rate and aperture of acoustic resonator on the noise and aerodynamic performance of fan is studied experimentally and systematically for a practical centrifugal fan. An analytical model is also proposed to establish the relationship between the resonant frequency and the resonator geometry parameters, as evidenced by some of the existing experimental results.