Gas phase liquid nitrogen biology storage tank

Abstract

The invention relates to a gas phase liquid nitrogen biology storage tank and belongs to the technical field of biological medicines. The gas phase liquid nitrogen biology storage tank comprises a vacuum tank wall, an inner cavity located in the vacuum tank wall, and a tank opening for communicating the inner cavity and the outer side of the vacuum tank wall. The inner cavity is internally provided with an inner cavity liquid nitrogen layer located on the bottom, and a cryopreservation frame platform located above the inner cavity liquid nitrogen layer. A cryopreservation frame is placed on the cryopreservation frame platform. A liquid nitrogen storage cavity is arranged between the vacuum tank wall and the inner cavity. The liquid nitrogen storage cavity is communicated with the inner cavity through a liquid supplementing pipe, the liquid nitrogen capacity in a tank body is increased greatly, evaporation of liquid nitrogen in an inner cavity body is reduced, temperature uniformity in the tank body is also improved, the liquid nitrogen consumption amount is reduced, and thus the use cost is reduced wholly and greatly. Meanwhile, the number of times and the use frequency for replacing external liquid nitrogen tanks are reduced, and daily use and maintenance are more convenient. Moreover, the gas phase liquid nitrogen biology storage tank is simple in structure and also fairly wide in application range.

Description

technical field [0001] The invention relates to the technical field of biomedicine, in particular to the technical field of low-temperature storage, in particular to a gas-phase liquid nitrogen biological storage tank. Background technique [0002] At present, in the field of biological research and clinical treatment, relevant users use a large number of gas-phase liquid nitrogen biological storage tanks to store biological samples. Especially in cord blood banks, various stem cell banks, and immune cell banks, this equipment must be used to ensure the safe storage of cells. [0003] The gas-phase liquid nitrogen biological storage tank is a large stainless steel container, surrounded by a vacuum insulation layer, and externally connected to a liquid nitrogen supply tank. The liquid nitrogen in the gas-phase liquid nitrogen biological storage tank is continuously evaporated and cooled to ensure the low-temperature storage of biological samples. Its product quality requires...

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Problems solved by technology

[0023] The purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art, and to provide a gas-phase liquid nitrogen storage tank that can work normally for a long time without an external liquid nitrogen supply tank, thereby greatly reducing the evaporation of liquid nitrogen in the entire liquid nitrogen

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