Abstract: In order to solve the vibration problems of compressor pipelines of the inverter air conditioners, the dynamics analysis of pipelines was simulated by finite element method. The frequency conversion experiments were carried out at measured points range from 35 to 72 Hz. Energy consumption model of the particle dampers was established based on pipelines. In regard to the optimal design parameters, the influences of particle material, particle size and filling rate on the energy consumption were analyzed by the discrete element method. The vibration experiments of pipelines were performed and the experimental data indicate that when particle materials of iron base alloy, particle size of 2 mm and damper filling rate of 90% are adopted, the acceleration response of the intake pipe decreases evidently with B-type particle dampers in 45°way and the reduction of measured points is 36.57%, 30.15%, 45.79% respectively. The acceleration response of the exhaust pipe also decreases evidently with A-type particle dampers in horizontal way and the reduction of measured points reaches to 40.87%, 62.04% and 50.42% respectively. Eventually, the variation trend of the acceleration response in the tests was compared with the analysis results of the energy consumption model. The comparison results verify the feasibility of the energy consumption model of particle dampers for pipelines.

Key words: compressor pipelin, particle damper, energy consumption model, design parameter, arrangement

摘要： 为解决变频空调压缩机管路振动问题，利用有限元法对管路进行动力学分析，在测点位置进行35～72 Hz变频试验测试。建立管路颗粒阻尼的能耗模型，通过离散元法确定颗粒材质、粒径和填充率等最优设计参数，并搭建管路减振试验台。振动试验结果表明：采用颗粒材质为铁基合金、颗粒粒径为2 mm、阻尼器填充率为90%的设计参数，当进气管采用B型阻尼器和45°布置方式，3个测点位置的加速度最大减幅分别为36.57%，30.15%，45.79%，当排气管采用A型阻尼器和水平方式时，3个测点位置的加速度最大减幅分别为40.87%，62.04%，50.42%。最后将试验的加速度响应变化趋势与耗能模型分析结果进行对比，验证了管路颗粒阻尼耗能模型的可行性。

关键词: 压缩机管路, 颗粒阻尼, 能耗模型, 设计参数, 布置方式