| 摘要: |
| 冰箱门封是连接门体和箱体的重要结构，门封的传热量是冰箱热负荷的重要组成部分。通过实验和三维CFD模拟相结合的方法，研究了冷藏室门封及周边结构的传热特性，重点分析了门封的传热途径及各传热途径热负荷的占比，为冰箱门封的优化设计提供依据。结果表明：门封总负荷为2.2 W，约占冰箱负荷的5.5%；门封传入箱体的热负荷、门封传入冷藏室间室的热负荷分别占门封总传热负荷的41.56%，45.07%。门封磁条是影响门封热负荷的重要因素，磁条宽度从9.6 mm下降为8.4 mm时，门封与箱体传热负荷降低51.7%，从而导致门封总传热负荷降低21.1%。 |
| 关键词: 冰箱 门封 热负荷 传热特性 |
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| A Study on the Heat Transfer Characteristics of Refrigerating Cabinet Gasket |
| Chen Qi,Yan Gang,Fang Zhongcheng,Yuan Baoli,Ren Wei |
| (Department of Refrigerating & Cryogenic Engineering, Xi'an Jiaotong University;Refrigeration Division, Midea Group) |
| Abstract: |
| Gasket is an important connection structure between refrigerator door and body, and heat transfer through gasket is an important component of refrigerator thermal load. Both CFD simulations and experimental test were carried out to analyze the heat transfer characteristics near gasket region. This paper primarily focuses on heat transfer paths and the proportions, which lays the foundation for the optimal design of gasket. The result shows that total thermal load of gasket is 2.2W, accounting for 5.5% of the total heat loss of a refrigerator, and thermal loads from gasket to refrigerating body and from gasket to refrigerating cabinet account for 41.56% and 45.07% of the total thermal load near the gasket region, respectively. Besides, the magnetic stripe is a key factor of the total thermal load of gasket. To reduce the width of gasket from 9.6mm to 8.4mm could effectively reduce the gasket thermal load from gasket to refrigerating body by 51.7%, resulting in a 21.1% reduction of total thermal load near gasket． |
| Key words: refrigerator gasket thermal load heat transfer characteristics |
