Combined circulating spraying quick-freezing refrigeration house system and implementation method thereof

Abstract

The invention discloses a combined circulating spraying quick-freezing refrigeration house system and an implementation method thereof. A circulating spraying quick-freezing system and a low-temperature storage system are connected to the same high-temperature side cooling cycle system in series through two cascaded heat exchangers, so that a refrigerant in the spraying quick-freezing process is recycled, the loss of the refrigerant is greatly reduced, and the spraying quick-freezing cost is saved; the natural convection type heat exchangers are adopted, the temperature difference in a storage chamber is small, no blind area exists in the temperature, temperature fluctuation is small, fan power consumption is avoided, and energy consumption of a refrigerating system is reduced; the heat of each low-temperature refrigeration cycle is recycled in a centralized mode through one high-temperature side refrigeration cycle, so that the recovered temperature of the waste heat of a condenser is increased, the grade of the recovered waste heat is improved, and the performance of the system is improved; the two functions of quick freezing and storage are achieved, two low-temperature cycles do not influence each other, and the system safety and stability are high; and one combined system simultaneously realizes quick freezing and storage processes of frozen objects, so that the investment cost is reduced.

Description

technical field [0001] The invention relates to quick-freezing storage technology for frozen objects, in particular to a combined circulation spraying quick-freezing cold storage system and a realization method thereof. Background technique [0002] Spray quick-freezing technology is a direct contact freezing technology, through the direct contact of low-temperature liquid refrigerant (such as liquid nitrogen, liquid carbon dioxide, etc.) Vitrification or partial vitrification of food can be achieved through the largest ice crystal formation zone. The ice crystals formed by the moisture in the food are uniform and small, and the food damage is small. The food after thawing can maintain the original color, aroma and taste to the greatest extent. There are a wide range of applications in the chain. However, the spray quick-freezing devices currently used are all open systems. After the refrigerant absorbs heat and vaporizes, it is pumped out by the exhaust fan and directly di...

AI Technical Summary

Problems solved by technology

However, according to statistics, the current fan energy consumption has accounted for 12.3% of the total energy consumption of the cold storage. The introduction of the fan has significantly increased the energy consumption of the cold storage and increased the operating cost of the cold storage, which is not conducive to the environmental protection and economic operation of the cold storage. It will increase the dry consumption of stored food, which is not conducive to the maintenance of food quality

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