冰箱门封技术现状与研究进展

Current technology situation and research progress of refrigerator gasket

门封漏热约占冰箱总热负荷15%,其密封和绝热性能对冰箱的制冷效果和运行能耗产生较大影响。本文讨论了门封的发展趋势、传热传质、材料配方和结构优化研究现状,可为同行开展门封领域的研究提供参考。根据文献资料,常采用CFD技术和反向热平衡测试(RHLM)获取门封传热量,而传质测试一般采用示踪气体技术和对冷凝水的收集。门封材料配方是影响其抗迁移性和力学性能的重要因素。同时,为了提高密封和绝热性能,门封从基础的平直结构逐步优化成适应不同场合的复杂多飞边、多气囊结构。

The heat leakage through gasket accounts for 15% of the total heat leakage of refrigerator. Its sealing and thermal insulation properties have a large influence on refrigeration effect and energy consumption of a refrigerator. Development trend, heat and mass transfer, material formulation and structure optimization are discussed in this paper, which is expected to provide guideline for researchers in the field of gasket. According to the literatures, the CFD technology and Reverse Heat Loss Method(RHLM) are often used to evaluate heat leakage of gasket, while mass transfer load mostly adopt tracer gas technology and collection of condensate. Material formulation is the key factor to determine the migration resistance and mechanical properties. In order to improve the sealing and thermal insulation properties, gasket is gradually optimized from a straight structure to a complex multi-edges and multi-air cells structure adapted to the characteristics of different application.