Movable fruit and vegetable batch pre-cooling device and method

Abstract

The invention provides a movable fruit and vegetable batch pre-cooling device and method. The device comprises a pre-cooling compartment body and a differential pressure pre-cooling system arranged inthe pre-cooling compartment body; the differential pressure pre-cooling system comprises a centrifugal fan, an evaporator and an adjustable wind shield; and the centrifugal fan and the evaporator arerespectively arranged at the top in the pre-cooling compartment body, the centrifugal fan is embedded in the middle of the evaporator, an air outlet of the centrifugal fan is formed in the side face,an air inlet of the centrifugal fan is formed in the lower portion, the adjustable wind shield is located below the centrifugal fan, and the pre-cooled fruits and vegetables are located below the adjustable wind shield. The evaporator, the centrifugal fan and the wind shield adopt the top design, so that the consistency of the pre-cooling speed or effect in the pre-cooling compartment body can beensured, and meanwhile, the effective space is saved.

Description

technical field [0001] The invention belongs to the technical field of fruit and vegetable transportation, and in particular relates to a mobile batch precooling device and method for fruits and vegetables. Background technique [0002] In recent years, with the rapid development of the economy, people's requirements for dietary structure have also increased. For fruit and vegetable products, they are no longer satisfied with eating well, but also want to eat well. "Fresh" has become the value of fruit and vegetable products. However, fruits and vegetables are still living organisms after they are harvested, because their respiration will generate a large amount of respiration heat. If these respiration heat cannot be quickly taken away and the product temperature of fruits and vegetables is reduced to a low enough In the process of transportation and storage, the product temperature of fruits and vegetables will be too high due to the accumulation of respiratory heat, and t...

AI Technical Summary

Problems solved by technology

[0005] (1) The applied pressure differential pre-cooling equipment generally adopts the method of roller blinds to cover the top of the stacked fruits and vegetables. The biggest problem with this method is that the goods cannot be stacked too high, cannot exceed the upper part of the pre-cooling fan, and cannot be higher than the roll. Therefore, the stacking volume of pre-cooled goods is usually less than half of the volume of the pre-cooled box, resulting in a waste of box space;

[0006] (2) The fan of the existing differential pressure pre-cooling equipment is usually located at the front side of the pre-cooling box, which will cause a problem that the fruit and vegetable packaging boxes close to the fan have a large static pressure difference, a fast wind speed, and a fast pre-cooling speed, while those away from the fan Small static pressure difference, slow wind speed, and slow pre-cooling speed in far-away fruit and vegetable packaging boxes will cause uneven pre-cooling, and in severe cases may cause chilling damage and affect the quality of fruit and vegetable products

Images