空调配管动态特性研究

The Research on Dynamic Characteristics of Air Conditioner Pipe

以某空调样机的压缩机及其配管为研究对象,针对压缩机配管的振动与噪声问题。基于Ansys Workbench对其进行模态分析,得到其固有频率和振型。由于管路系统的6、7阶固有频率与压缩机工作频率接近,为避免共振对管路结构提出优化建议。分别基于压缩机内部转子旋转不平衡带来的激励,以及配管内气流脉动作为激励力对管路进行两次谐响应分析。并对两次谐响应仿真结果进行对比分析,根据分析结果提出了空调配管减振降噪措施。

This paper make a study on a prototype of the air conditioning compressor and piping for the problems on piping vibration and noise. First of all, modal analyzing is conducted by ANSYS Workbench and the natural frequencies and modal shapes of structure are outputted. Because the sixth and seventh natural frequencies of the pipeline system are close to the compressor excitation frequency, in order to avoid resonance on pipe, the paper have given some structure optimization suggestions. Twice harmonic response analysis on the piping and compressor are carried out, respectively based on two different exciting force. The two harmonic response simulation results are compared, based on the analysis of this thesis, the measures of vibration damping and noise reducing are presented for air - conditioning piping.