Temperature-controlled microorganism preservation device

Abstract

The invention relates to the technical field, and discloses a temperature-controlled microorganism preservation device. The temperature-controlled microorganism preservation device comprises a shell;a semiconductor refrigeration sheet is fixedly connected to the bottom of the inner wall of the shell; a temperature guide plate is fixedly connected to the top of the semiconductor refrigeration sheet; a storage box is fixedly connected to the surface of the temperature guide plate; a heat transfer sheet is movably connected to the top of the storage box; the top of the heat transfer sheet is fixedly connected with expansion alloy; the top end of a right-angle rod is fixedly connected with a polarity conversion head; the top of the shell is fixedly connected with a supporting plate; the top of the supporting plate is fixedly connected with a positive electrode connector; one side face of the positive electrode connector is fixedly connected with a first electric wire; the other end of thefirst electric wire is fixedly connected with a direct-current power supply; temperature in the storage box is conducted to the expansion alloy; the polarity of the two ends of the semiconductor refrigeration sheet is changed by controlling the rotating direction of the polarity conversion head through expansion and contraction of the expansion alloy; and therefore, refrigeration or heating of the top of the semiconductor refrigeration sheet is controlled.

Description

technical field [0001] The invention relates to the technical field of microorganism preservation, in particular to a temperature-controlled microorganism preservation device. Background technique [0002] Strain preservation refers to the technology of maintaining the vitality and genetic characteristics of microbial strains. The basic principle is to keep the life activities of microorganisms in a semi-permanent dormant state, that is, to limit the metabolism of microorganisms to a minimum. Drying, low temperature and air isolation are the main measures to ensure this state. In daily work, 4°C refrigerators are often used for short-term preservation of bacteria. [0003] When microbial strains are stored in a 4°C refrigerator, they can only be stored for a short time. When stored for a long time, because the refrigerator works for too long, the internal temperature will vary. When it exceeds the tolerance range of microorganisms, it will damage the activity of microorganis...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a temperature-controlled microorganism storage device, which has the advantages of automatically regulating the internal temperature of the storage bin and can store microorganisms for a long time, and solves the problem that microorganisms cannot be stored for a long time in a refrigerator at 4°C. question

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