Concept and planning key of miniature constant temperature and humidity test box

In the postharvest treatment of agricultural commodities in China, the miniature constant temperature and humidity test chamber has a significant effect on the preservation of fruits and vegetables, but its effect on the rapid pre-cooling treatment of fruits and vegetables after harvest is bound to be restricted. The primary reason is that the miniature constant temperature and humidity test chamber cannot be moved with the change of the place of production. The fruits and vegetables harvested from the place of production must be transported to the warehouse before they can be cooled and stored.

There are many pre-cooling methods, such as vacuum pre-cooling, cold water pre-cooling and air pre-cooling. However, judging from the current application of these methods, they are not satisfied with China's household agricultural production methods. Based on the research of the miniature constant temperature and humidity test box, a new type of miniature constant temperature and humidity test box-portable constant temperature and humidity test box is proposed.

Its main feature is the integration of the refrigeration unit, the foldable enclosure structure, the installation and operation of the fruit and vegetable picking site, and the differential pressure air pre-cooling of the fruit and vegetable, so that the fruit and vegetable can reach the storage temperature in a short time. When planning, the main questions include the integration of organic groups, the selection of insulation materials for the enclosure structure, the shape of the warehouse and the calculation of the cooling capacity of the unit. In this section, the overall plan is analyzed, and more in-depth discussions are yet to be done in the next step.