Low temperature refrigerator

Abstract

The invention discloses a low temperature refrigerator, comprising a refrigerator body, a refrigerator door, an evaporator and a semiconductor refrigeration plate. A refrigerating chamber and a freezing chamber are respectively defined in the refrigerator body, the front side of the refrigerator body is provided with an opening, the refrigerator door is installed on the refrigerator body and used for opening and closing the opening, the evaporator is arranged in the back wall of at least one of the refrigerating chamber and the freezing chamber, the hot end of the semiconductor refrigeration plate is in contact with the evaporator, and the cold end is located in at least one of the refrigerating chamber and the freezing chamber. In the low temperature refrigerator, by using the high temperature difference characteristics at two ends of the refrigeration plate, a refrigerating system of the refrigerator is used for dissipating heat at the hot end of the refrigeration plate, thereby achieving the purpose of low temperature at the cold end of the refrigeration plate, and cooling the temperature in a low temperature chamber to 40 to 50 DEG C below zero. Therefore, the low temperature refrigerator has low production cost, small refrigerator volume, and simplified structure of the refrigerating system, can achieve accurate temperature control and has wide adaptability.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a low-temperature refrigerator. Background technique [0002] Traditional refrigerators usually use single-stage compression refrigeration. The refrigeration temperature of the freezer is generally between -18°C and -20°C, and it is impossible to achieve a low temperature below -40°C. Therefore, the refrigeration temperature is limited and the applicability is reduced. Traditional cryogenic refrigerators capable of cooling below -40°C usually use two-stage compression refrigeration or use special refrigerants to achieve low temperatures. However, due to the use of a two-stage compression system or a special refrigerant to achieve low temperatures, traditional low-temperature refrigerators have problems such as bulky, complex structures, high prices, and inaccurate temperature control, which prevent them from being widely used. Contents of the invention [000...

AI Technical Summary

Problems solved by technology

However, due to the use of two-stage compression systems or special refrigerants to achieve low temperatures, traditional low-temperature refrigerators have problems such as bulky, complex structures, expensive prices, and inability to accurately control the temperature, which makes them unable to be widely used

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