基于仿真分析的冰箱回气管优化设计

Optimal design of refrigerator suction pipe based on simulation analysis

冰箱噪声问题一直都是产品改善研究的重点,冰箱噪声主要包括压缩机噪声、制冷剂噪声、异音、管路噪声等方面,而由排气管和回气管引起的管路共振是造成管路噪声的主要原因。针对冰箱管路共振问题,采用仿真和实验两种手段,对我司某一款型号冰箱机械室内回气管进行固频和刚度分析。结合实验应力测试结果,对回气管路进行优化,优化后的回气管路低阶固频有效地避开了压缩机的固有频率,降低了管路的刚度,避免了压缩机工作过程中的管路共振,为解决冰箱管路共振问题提供了方案。

Refrigerator noise has always been the focus of product improvement research.Refrigerator noise mainly includes compressor noise,refrigerant noise,abnormal noise,pipeline noise,and so on.Pipeline resonance caused by exhaust pipes and suction pipes is the main cause of pipeline noise.Aiming at the problem of the resonance of the refrigerator pipeline,the experimental and simulation methods are used to analyze the fixed frequency and stiffness of the suction pipe of a certain type of refrigerator machinery in our company.Optimize the suction pipe combined with the results of the experimental stress test.The low-order fixed frequency of the suction pipe effectively avoids the natural frequency of the compressor,and reduces the rigidity of the pipeline,avoids pipeline resonance during the work of the press,and provides a solution to the problem of refrigerator pipeline resonance.