Semiconductor refrigeration constant-temperature and vacuumizing rice cabinet and refrigeration control method thereof

Abstract

The invention relates to the field, in particular to a semiconductor refrigeration constant-temperature and vacuumizing rice cabinet and a refrigeration control method thereof. The rice cabinet comprises a box body, an inner container, a semiconductor refrigeration assembly, a vacuum assembly and a controller; a refrigeration cavity and a temperature sensor are arranged in the inner container; the semiconductor refrigeration assembly comprises a semiconductor refrigeration device, a radiator, a cold radiator and a liquid flow circulation assembly. The liquid flow circulating assembly is at least partially wound outside the inner container; the whole inner container in the rice cabinet is cooled more uniformly, so that refrigeration operation of the rice cabinet is more efficient, rapid and uniform, rice caking caused by too low local temperature of the inner container is avoided, the inner container can be vacuumized through the vacuum set, the interior of the refrigeration cavity of the inner container can be kept in an emptying state for a long time, and the service life of the rice cabinet is prolonged. Condensed water cannot be generated in the inner container, constant-temperature dry storage of the rice can be achieved, and the rice can be stored for a longer time and is not prone to qualitative change.

Description

technical field [0001] The invention relates to the field, in particular to a semi-conductor refrigerated constant temperature, vacuumized rice cabinet and a refrigerated control method thereof. Background technique [0002] At present, the storage method of large-package rice in shopping malls is vacuum pumping. Under the vacuum pumping state, the storage time of rice will be prolonged. However, after the large package of rice is sealed and opened, the storage time will be greatly shortened. If the rice is not eaten in time, the rice will have problems such as mold, rice worms, and caking, making it inedible and causing rice waste. In order to solve the storage environment of rice and increase the storage time of rice, it is necessary to store the unsealed rice in a specific refrigeration device. [0003] There are two types of constant temperature refrigeration for storing rice on the market. One is the direct cooling type. The cold end of the refrigeration system is in c...

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Problems solved by technology

[0003] There are two types of constant temperature refrigeration for storing rice on the market. One is the direct cooling type. The cold end of the refrigeration system is in contact with the metal liner. This structure causes the problem of uneven cooling in the system. The temperature of the location is extremely low, and the rice is easy to agglomerate at this location; the other is an air-cooled structure, with small holes in the metal inner container, and the cold air from the refrigeration system is blown into the inner container to keep the rice at a constant temperature. Blowing into the inner tank, the cold air is easy to generate condensed water in the inner tank, which is easy to cause the rice to deteriorate. At the same time, the cooling efficiency of the air-cooled structure is very low, and there is a large temperature gradient difference in the inner tank temperature.

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