Movable pressure difference pre-cooling and freezing integrated equipment and application method thereof

Abstract

The invention relates to movable pressure difference pre-cooling and freezing integrated equipment and an application method thereof. The equipment comprises a movable container chamber body, at leasttwo variable frequency refrigerating systems, an air cooler, at least three pressure difference ventilating devices and an intelligent automatic control system, wherein the movable container chamberbody is used for placing fresh agricultural products; the variable frequency refrigerating systems are mounted on the back end part of the chamber body for providing cooling capacity to the chamber body; the air cooler is fixedly arranged in the top of the movable container chamber body for exchanging heat between the fresh agricultural products of the movable container chamber body and the cold capacity generated by the variable frequency refrigerating systems; the pressure different ventilating devices are fixedly arranged in the movable container chamber body, heat of the fresh agriculturalproducts is extracted, and hot air is in full contact with cold air generated by the variable frequency refrigerating systems to cool and pre-cool; and the intelligent automatic control system controls the variable frequency refrigerating systems, the air cooler and the pressure difference ventilating devices, and controls the temperature of the chamber body, so that the pre-cooling function andthe freezing function of the chamber body are intelligently and automatically switched.

Description

technical field [0001] The invention relates to a mobile differential pressure pre-cooling and refrigeration integrated equipment suitable for fresh agricultural products such as fruits and vegetables and its use method, and relates to the cold chain technology field of pre-cooling and refrigeration of fresh agricultural products such as fruits and vegetables. Background technique [0002] Pre-cooling is the first process of the cold chain circulation technology of fresh agricultural products such as fruits and vegetables, and plays a vital role in the cold chain circulation and preservation of various fresh agricultural products. Differential pressure precooling is one of the commonly used precooling methods. It uses air as the cooling medium, and generates a certain pressure difference on both sides of the precooling fresh agricultural product packaging box through the suction of the differential pressure fan, so that the cold air can directly penetrate into the object to b...

AI Technical Summary

Problems solved by technology

[0003] China’s fresh agricultural products such as fruits and vegetables lack professional pre-cooling facilities in the fields where they are produced, and there are only a few fruit and vegetable fresh-keeping warehouses; at present, 99% of domestic fresh agricultural products are pre-cooled in ordinary cold storage, and the pre-cooling speed is slow and the time is long , high energy consumption, and most cold storages are far away from the fields, so the pre-cooling operation is very inconvenient, which also leads to the untimely pre-cooling of fresh agricultural products, especially fruits and vegetables, and the quality is greatly reduced

[0004] After cold storage pre-cooling or differential pressure pre-cooling operations, fresh agricultural products such as fruits and vegetables cannot be immediately transported to nearby cold storage and mobile cold storage for temporary storage, or immediately transported to consumption destinations through refrigerated transportation equipment

The original mobile pressure difference pre-cooling equipment only considers the rapid pre-cooling link, and the refrigeration system has a very strong cooling capacity. After the pre-cooling is completed, it needs to continue to operate the large refrigeration unit to maintain the temperature, and the large horse-drawn carts cause equipment Excessive use, excessive energy consumption, but also affect the quality of fruits and vegetables

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