Temperature control module in biological reaction instrument

Abstract

The invention provides a temperature control module in a biological reaction instrument, the temperature control module comprises a flat plate and an upper cover, the upper cover and the flat plate are oppositely arranged and connected into a whole, a plurality of container holes for placing reaction consumables are formed in the upper cover, a containing cavity is formed between any two adjacent container holes on one side, facing the flat plate, of the upper cover, the containing cavities communicate with one another and are filled with a phase change heat transfer medium. Due to the adoption of the phase change heat transfer medium, the temperature increasing and decreasing rate is increased, the temperature uniformity of the temperature control module in the biological reaction instrument can be remarkably improved, the biochemical reaction time can be shortened, and due to the fact that the structure in the prior art is not adopted any more, the temperature regulation performance of the temperature control module in the biological reaction instrument does not excessively depend on the machining and assembling precision of related parts, so that the reliability of the module is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical and biological reaction instruments, and in particular relates to a temperature control module in a biological reaction instrument. Background technique [0002] Accurate temperature control performance is a necessary condition for the preservation of reagents and experimental operations involving biochemical reactions. At present, many instruments have the function of controlling the temperature of biochemical reactions, which can be widely used in various enzymatic reactions and the preservation of biological samples and reaction reagents, such as polymerase chain reaction analyzers, constant temperature amplification instruments, melting curve instruments, etc. The temperature control module in the biological reaction instrument in the instrument is mostly fixed in the form of a "sandwich". From the middle to both ends, it includes: heating and cooling components, thermal pads, temperature con...

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Problems solved by technology

[0005] There is usually a layer of thermal pad between the heating and cooling parts and the temperature control metal block, which is used to eliminate the gap between the heating part and the heating part, so that the contact between the two is more sufficient and the heat transfer is more uniform. Glue, thermally conductive carbon film, etc. The thermal conductivity of such materials is not high, and they will age after long-term use, and the thermal conductivity will decrease.

The temperature-controlling metal block acts as the middle layer of heat transmission, and finally transmits the heat to the reaction consumables. It does not have the ability to regulate the uniformity of heat transfer by itself.

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