Differential-pressure pre-cooling fresh-keeping device for fruits and vegetables

Abstract

The invention discloses a differential-pressure pre-cooling fresh-keeping device for fruits and vegetables. The device comprises a differential-pressure pre-cooling fresh-keeping cabinet, a high-pressure control box, a low-pressure control box, a high-pressure internal transmission device, a bottom refrigeration fresh-keeping transmission box and a low-pressure internal transmission device; the bottom refrigeration fresh-keeping transmission box is provided with a high-pressure power control device, a fresh-keeping cabinet refrigeration control device and a low-pressure power control device; the low-pressure internal transmission device is provided with a second high-temperature heat exchange device, a second low-temperature cold exchange device and a low-pressure oil pressure control device; and the low-pressure oil pressure control device is provided with a low-pressure oil pressure guide pipe, a low-pressure check valve and a low-pressure slippage pump. When in use, the device makesup the problems of long-time pre-cooling and non-uniform pre-cooling through differential-pressure pre-cooling on the basis of storage pre-cooling. At the same time, when fruits and vegetables are taken out, fruit-vegetable crispers can avoid the entrance of hot air to avoid the situation that the hot air can affect the temperature of fruit-vegetable surfaces, cause deterioration, and affect thelong-time storage of fruits and vegetables.

Description

Technical field [0001] The invention is a differential pressure pre-cooling fruit and vegetable preservation device, belonging to the field of differential pressure pre-cooling fruit and vegetable preservation devices. Background technique [0002] The preservation and processing of agricultural products is the continuation of agricultural production and the "second-production economy" in the process of agricultural reproduction. Developed countries have put post-production storage and processing in the first place in agriculture. In addition to the high added value brought by preservation and processing, it only reduces The loss of existing fruits and vegetables can bring nearly 100 billion yuan of benefits to the society, not to mention that after China’s accession to the WTO, fruit and vegetable products are one of the most promising bulk agricultural products to enter the international market, so this advantage should be seized. The conditions and rare opportunities. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a differential pressure pre-cooling fruit and vegetable fresh-keeping device to solve the problem of long pre-cooling time and uneven pre-cooling of the prior art equipment when the prior art is used, and at the same time during storage Large temperature fluctuations due to access, testing and other operations can easily lead to condensation on the surface of agricultural products, prompting phase transition of cell membranes, and then lead to rapid aging and decay of agricultural products, failing to achieve a good preservation effect

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