小容积冰箱风道数值模拟研究及优化

Numerical simulation and optimization of air duct of small volume refrigerator

利用有限元仿真的方法对某小容积三门冰箱风道流动过程进行数值模拟,分析其流场特性和风量分配。通过对原型机进行实验和仿真,对比分析结果,验证了仿真模型的可靠性。在原型机仿真结果分析的基础上,对风道导风结构进行优化,最终仿真总风量为35.94 m3/h,较原型机提升18.03%,基本满足更新产品后对风量的要求。同时根据标准化要求,对该容积冰箱导风圈直径进行仿真探究,通过多组不同直径导风圈仿真风量对比,最终确定该型号冰箱导风圈直径为90 mm时,风量最大,为37.46 m3/h。

The flow process of an air duct of a small volume three-door refrigerator was numerically simulated by using the finite element method.The flow field characteristics and air volume distribution were analyzed.The reliability of the simulation model is verified by comparing the experimental results with the simulation results of the prototype.Based on the analysis of the simulation results of the prototype,the air duct structure was optimized,and the total simulated air volume was 35.94 m3/h,18.03%higher than that of the prototype,basically meeting the requirements of the air volume after updating the product.At the same time,according to the standardization requirements,the diameter of the air duct of the volume refrigerator was simulated and explored.By comparing the simulated air volume of several groups of air duct with different diameters,the maximum air volume was finally determined when the diameter of the air duct of the refrigerator was 90 mm,and the maximum air volume was 37.46 m3/h.