| 摘要: |
| 目的 研究生鲜食品运输过程中使用的物流箱的结构优化和保冷效果。方法 设计一种冷板可拆卸的物流箱，由冷板、外壳层、保温隔热层、接触层构成，并且建立物流箱保冷效果的物理模型，利用有限元方法对其不同情况下的保冷效果进行分析，通过多项式拟合的方法得到物流箱表面热流密度和保温隔热层厚度的关系。结果 发现在物流箱外空气温度为25 ℃时，采用保温隔热层厚度为15 mm时物流箱表面热流密度比25 mm时高出约20 W/m2。结论 设计的物流箱可多次重复使用，便于箱内空间的利用与货物摆放，分析的结果有助于在设计物流箱时选取合适的保温隔热层厚度。 |
| 关键词: 物流箱 冷板 保冷效果 保温隔热层 |
| DOI：10.19554/j.cnki.1001-3563.2018.09.018 |
| 分类号:TB485.3 |
| 基金项目:广东省青年创新类人才项目基金（2016KQNCX226）；广东省质量工程项目（51-SC150201） |
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| Design of Logistics Box with Detachable Cold Plate and Analysis on the Cooling Effect |
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LI Xi-xia, LYU Dong-lin, WANG Li, LI Chang-yu
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Guangzhou College of South China University of Technology, Guangzhou 510800, China
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| Abstract: |
| The work aims to study the structure optimization and cooling effect of the logistics box used in the transportation of fresh food. A detachable logistics box with cold plate was designed. It consisted of a cold plate, a shell layer, a thermal insulation layer and a contact layer; and the physical model for the cooling effect of the logistics box was set up. The cooling effect under different conditions was analyzed in the finite element method. The relationship between the heat flow density on the surface of logistics box and the thickness of the thermal insulation layer was obtained by the polynomial fitting method. It was found that, when the air temperature outside the logistics box was 25 ℃, if the thickness of thermal insulation layer was 15 mm, the heat flow density of the surface of the box was about 20 W/m2 higher than that of 25 mm. The designed logistics box can be reused for many times, convenient for the use of space in the box and the placement of goods. The analyzed results help select the proper thickness of thermal insulation layer at the time of designing the logistics box. |
| Key words: logistics box cold plate cooling effect thermal insulation layer |
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