目的 为了减少保温箱的冷量损耗，且能够将多种生鲜产品共同贮藏，设计一种相变蓄冷式双温区保温箱。方法 保温箱内设有冷藏区和微冻区，通过热负荷计算得出各区域所需蓄冷剂用量，并利用数值模拟和试验验证等2种方法来研究保温箱的保温效果，最后将试验数据与模拟数据进行对比，验证理论计算和数值模拟的可靠性。结果 蓄冷板放置在保温箱顶部时，保温箱箱体中部的温度最高，顶部的温度最低，温度场虽有分布不均的情况出现，但两区域总体温度在2 h内趋于稳定，并分别维持在适宜生鲜产品保存的温度区间（1~4 ℃和?10~0.5 ℃）。结论 所设计的保温箱可以有效维持保鲜温度，并满足多种生鲜产品共同贮藏的设计要求。

The work aims to design a cold storage phase-change incubator with two temperature zones in order to reduce the loss of cooling capacity of the incubator and store a variety of fresh foods together. The incubator has a cold storage zone and a superchilling storage zone, and the consumption of the cold storage material in each zone was obtained by thermal load calculation. The heat insulation effect of the incubator was studied by numerical simulation and experimental verification. Finally, the test data were compared with the simulated data to verify the reliability of theoretical calculation and numerical simulation. When the cold storage plate was placed at the top of the incubator, the temperature in the middle of the incubator was the highest, and the temperature at the top was the lowest. Although the temperature field was sometimes unevenly distributed, the overall temperature of the two zones tended to be stable within 2 h, and maintained at 1~4 ℃ and ?10~0.5 ℃, respectively, which were suitable for fresh foods preservation. The designed incubator can effectively maintain the preservation temperature and meet the design requirements of various fresh foods stored together.