Biochemical incubator capable of preventing frosting after long-term use

Abstract

The invention relates to a biochemical incubator capable of preventing frosting after long-term use. The biochemical incubator comprises a box body, a temperature controller, refrigeration equipment and a heating device, and the refrigeration equipment comprises a compressor and two evaporators; a culture cavity and an air flow channel are arranged in the box body, an air inlet and an air outlet are arranged between the air flow channel and the culture cavity, and a fan is arranged in the air flow channel; the two evaporators are respectively connected with the compressor, and electromagnetic valves are respectively arranged on pipelines connected with the compressor; and the heating device and the two evaporators are located in the air flow channel. According to the biochemical incubator capable of preventing frosting after long-term use, the two evaporators are switched for use, so that the evaporators can be prevented from frosting, the temperature in the incubator is kept stable, and the data accuracy of a culture sample is ensured.

Description

technical field [0001] The invention relates to the field of biochemical incubators, in particular to a biochemical incubator that prevents frost from long-term use. Background technique [0002] The operating temperature range of existing biochemical incubators is 0-70°C. If the operating temperature is lower than the ambient temperature within this range, the compressor needs to be continuously refrigerated to ensure the operating temperature, which will cause frosting of the refrigerating part, that is, the evaporator. , When the frost is serious, the surface of the refrigeration component will be frozen, the air-conditioning cannot be circulated, the cooling effect will be reduced, and the instrument will give a temperature alarm, which will affect the experimental work. [0003] At present, there are two main ways to avoid frosting: 1. Manual or semi-automatic defrosting: the compressor needs to be stopped before defrosting can be performed. Affect the continuation of ...

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Problems solved by technology

Affect the continuation of the experiment; 2. Automatic defrosting: the electric heating device is automatically activated when timing or when the frost is judged to be thick. Proper temperature in the incubator is a favorable condition for the survival of harmful bacteria and viruses, while bacteria and viruses will contaminate the samples, which will also make the experimental results inaccurate

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