Low-temperature refrigerator

Abstract

The invention relates to a low-temperature refrigerator comprising a refrigerator body and a refrigerating system. The refrigerator box is divided into a freezing chamber, a quick-freezing chamber and a mechanical chamber. The refrigerating system comprises a low-temperature refrigerating machine, a first heat pipe heat transfer system and a second heat pipe heat transfer system, wherein the cooling capacity prepared by the refrigerating machine is transferred to the freezing chamber and the quick-freezing chamber through the first heat pipe heat transfer system and the second heat pipe heat transfer system correspondingly. The first heat pipe heat transfer system comprises at least one loop heat pipe, a coldness guiding plate and a heat transfer module. An electric heating piece is attached to the surface of a compensation device of each loop heat pipe to control the work temperature of the compensation device. The heat transfer module has three implementation modes, specifically, according to the heat transfer module (I), at least one gravity siphon heat pipe is included, according to the heat transfer module (II), at least one channel heat pipe is included, and according to the heat transfer module (III), at least one gravity siphon heat pipe and at least one channel heat pipe are included. The second heat pipe heat transfer system comprises at least one channel heat pipe. According to the low-temperature refrigerator, oil blocking is avoided, the structure is flexible, vibration caused due to the fact that a low-temperature refrigerating machine is placed above a freezing chamber is eliminated, the control accuracy is high, and the quick-freezing chamber is arranged, so that the functions are more complete.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a low-temperature refrigerator. Background technique [0002] With the rapid development of scientific fields such as low-temperature biology and low-temperature medicine, low-temperature refrigerators are increasingly used in experiments and long-term storage of samples such as biomolecules, colonies, pharmaceutical reagents, and organs. [0003] Most traditional cryogenic refrigerators use a cascade vapor compression refrigeration system, in which the compressor needs lubricating oil. However, in low temperature environment, lubricating oil is easy to condense, forming oil plugging and causing equipment failure. The new low-temperature refrigerator does not require any form of lubrication, eliminating the common oil plugging failures in traditional low-temperature refrigerators; and it has higher cooling efficiency in the low-temperature temperature zone and has signific...

AI Technical Summary

Problems solved by technology

[0007] In view of the oil plugging of traditional low-temperature refrigerators, the failure rate is high, and the vibration of the low-temperature refrigerator located above the freezer in the new low-temperature refrigerator is not good for the equipment; relying only on the low-temperature refrigerator for temperature control, the temperature control accuracy is low, and the temperature fluctuation is large; only refrigeration room, single function and other problems, the present invention proposes a low-temperature refrigerator

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