Independent humidifying type fruit and vegetable ice-temperature stereoscopic storehouse carbon dioxide refrigerating system

Abstract

The invention provides an independent humidifying type fruit and vegetable ice-temperature stereoscopic storehouse carbon dioxide refrigerating system. The system structurally comprises a circulatingbarrel, a compressor, a condenser, liquid accumulators and an evaporator. The evaporator is mounted in a refrigeration house. The condenser is embedded underground so as to conduct heat exchange directly with the earth or underground water. A carbon dioxide refrigerant ceaselessly flows in a circulation loop to realize continuous refrigerating on the refrigeration house. Carbon dioxide belongs toa unique working medium of the refrigerating system. Even if the carbon dioxide refrigerant leaks underground, underground water resources cannot be polluted, and the underground ecological balance cannot be destructed. The evaporator comprises air coolers and overhead exhaust pipes. The refrigeration house is subjected to cooling and precooling through the air coolers, and then the overhead exhaust pipes conduct cyclic refrigerating to keep the internal temperature of the refrigeration house stable, so that the fluctuation range of the temperature difference in the refrigeration house is verysmall. Accordingly, ice-temperature storage is realized. Since the condenser is embedded underground and can conduct heat exchange directly with the earth, loss of mechanical energy during condensation heat exchange is avoided, and energy consumption is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of cold storage refrigeration, in particular to a carbon dioxide refrigeration system for an independent humidification type fruit and vegetable ice-temperature three-dimensional storage. Background technique [0002] With the rapid development of the economy and the continuous improvement of people's living standards, consumers' demand for fruits and vegetables continues to increase, and their requirements for freshness, appearance, nutrition, and taste are also getting higher and higher. This requirement has greatly promoted Scientists at home and abroad have made unremitting research on the methods of fruit and vegetable storage and preservation. [0003] Ice temperature technology is the third generation of food storage and preservation technology after traditional refrigeration and freezing. However, the narrow range of ice temperature limits the rapid promotion of ice temperature technology in my count...

AI Technical Summary

Problems solved by technology

The existing refrigeration system for cooling the cold storage not only consumes a lot of energy, but also cannot ensure that the temperature difference in the cold storage can be adjusted within a very small range, which makes it impossible to store the fruits and vegetables in the cold storage for a long time at ice temperature

In addition, in terms of refrigerants, freon and ammonia are mostly used as refrigerants in domestic and foreign cold storage refrigeration systems, but freon will destroy the ozone layer and produce a certain greenhouse effect, which is not environmentally friendly, while ammonia is poisonous and has potential hazards of explosion. high security risk

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