Vehicle-mounted energy-saving and environment-friendly vacuum rapid precooling equipment for fruit and vegetable

Abstract

The invention belongs to the technical field of vacuum application, and relates to vehicle-mounted energy-saving and environment-friendly vacuum rapid precooling equipment for fruit and vegetable. Thevacuum rapid precooling equipment comprises a vacuum heat insulation outer box and a honeycomb expansion plate heat sink inner box, and vacuum heat insulation layers are arranged between the vacuum heat insulation outer box and the honeycomb expansion plate heat sink inner box; the honeycomb expansion plate heat sink inner box is formed by supercharging and bulging double-layer metal plates, and / or the inside surface of the honeycomb expansion plate heat sink inner box is blackened; and thus, the rapid cooling of the stored fruit and vegetable is benefited. Vacuum pressure is provided for thehoneycomb expansion plate heat sink inner box by a vehicle exhaust gas utilization device through a working medium generator, an injection pump and the like; the vacuum pressure is supplemented and provided for the honeycomb expansion plate heat sink inner box through a holding pump and a differential pressure valve II; and the honeycomb expansion plate heat sink inner box is maintained in the low temperature state through a refrigerator and a low temperature valve. The equipment stated in the application is rational in structural design, and the effects of energy saving and emission reduction are achieved; the equipment is high in practicability, and especially suitable for cold chain logistics transportation of fruit and vegetable product origins; the effective preservation and long-time storage of the fruit and vegetable are ensured, and the application range is wide, and the economic benefits are very obvious.

Description

technical field [0001] The invention belongs to the technical field of vacuum applications, and in particular relates to a vehicle-mounted energy-saving and environment-friendly vacuum rapid precooling device for fruits and vegetables, which is mainly used in the field of cold chain logistics transportation of fruits and vegetables to realize high-quality preservation of fruits and vegetables. Background technique [0002] After the vegetables and fruits are harvested, they still rely on the consumption of sugar and starch in the form of carbon assimilation in leaves, stems or fruits to maintain their lives. Respiration generates heat, which increases the temperature of fruits and vegetables; the rise in product temperature strengthens respiration and promotes water evaporation. Microbial reproduction and oxidation are intensified, which eventually leads to discoloration and deterioration of fruit and vegetable products, and loses their original flavor and nutritional value. ...

AI Technical Summary

Problems solved by technology

At present, the main problems of the vacuum pre-cooling device are: 1) the use of refrigerants, high energy consumption; 2) most of the existing equipment is warehouse-type, which is not conducive to rapid vacuum pre-cooling after picking in the production area, and it takes a certain period of time to enter and exit the warehouse and the process of removing the air in the warehouse, and vacuum pre-cooling fruits and vegetables, the best effect cannot be achieved; 3) The one-time investment of equipment is large, and the recovery period of investment is long. The equipment cannot meet the needs of the processing site, has no mobility, and has no form. A certain cold chain, in the actual production can not achieve instant pre-cooling

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