Jacket type liquid nitrogen spraying refrigerator

Abstract

The invention discloses a jacket type liquid nitrogen spraying refrigerator. Jacket type air supply is adopted. Low-temperature nitrogen formed after liquid nitrogen is atomized and sprayed is more evenly supplied into a refrigerator body, and uniform cooling is achieved in the refrigerator body. The top of the refrigerator body is separated by a partition plate to form a jacket layer. The partition plate is provided with a plurality of air outlet holes. A liquid nitrogen spraying device is arranged in the jacket layer. The liquid nitrogen spraying device is connected with a liquid storage pot through a liquid inlet pipeline. The liquid inlet pipeline is provided with a spraying control valve and a pressure increasing valve. An air supply fan is arranged in the jacket layer. An air inlet control valve is arranged in the jacket layer. An air outlet control valve is arranged at the bottom of the refrigerator body. A fruit and vegetable storage and transportation area in the refrigerator body is provided with an oxygen concentration detection device, a temperature detection device and a pressure detection device. The oxygen concentration detection device, the temperature detection device, the pressure detection device, the spraying control valve, the air inlet control valve and the air outlet control valve are all connected with a controller. The refrigerator adopts the jacket type spraying air supply way, so that the temperature field is more uniform; the partition plate prevents the liquid nitrogen from dripping on fruits and vegetables to frostbite the fruits and vegetables.

Description

technical field [0001] The invention relates to the technical field of cold storage, in particular to a jacketed liquid nitrogen spray refrigerator. Background technique [0002] Refrigerators are important portable tools during food transportation. With the continuous development of the circulation field, refrigerators have a wide range of market application scenarios. [0003] At present, most widely used refrigerators are mechanical refrigeration or cold storage. The structure of the mechanical refrigeration device is complicated, and the initial investment is relatively large; the temperature field of the cold storage type is uneven. With the continuous advancement of technology, liquid nitrogen spray technology has been applied in the field of refrigerators. However, the existing liquid nitrogen spray refrigerators use nozzles to directly atomize and spray the liquid nitrogen into the compartment, which will produce many liquid nitrogen droplets, which will cause fro...

AI Technical Summary

Problems solved by technology

However, the existing liquid nitrogen spray refrigerators use nozzles to directly atomize and spray liquid nitrogen into the compartment, which will produce many liquid nitrogen droplets, which will cause frostbite to the stored fruits and vegetables, and the temperature field is not uniform enough.

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