关键词: 压缩机管路, 颗粒阻尼, 能耗模型, 设计参数, 布置方式

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