基于压缩机低频噪音的仿真优化设计

Simulation optimization design based on low frequency noise of compressor

阐述了压缩机低频噪音的形成机理,运用ANSYS分析了分液器一阶模态频率对低频噪音的影响,通过优化分液器支架,来改变分液器一阶模态频率,使其频率与压缩机运行频率的倍频错开,避免了因结构共振导致的低频噪音,并试验验证了理论模态仿真结果的准确性。在某款压缩机机型上,可使目标值降低,有效地降低了低频噪音,为后续的设计有一定的借鉴意义。

The formation mechanism of the frequency noise is expounded,applying ANSYS to analyze the influence that the first order modal frequency of distributor to low frequency noise,in order to change the first order modal frequency of distributor by optimizing the bracket of distributor,the frequency and the compressor running frequency are avoided,which avoids the low-frequency noise caused by structure resonance,and the accuracy of the theoretical modal simulation results is verified by the experiments.In a certain type of compressor,the target value can be reduced,which effectively reduces the low frequency noise and has certain reference significance for the subsequent design.