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Constant low temperature storage system and method for removing Dewar fog

A storage system and low-temperature technology, which is applied to shock-sensitive items, anti-rot containers, biological packaging, etc., can solve the problems that cannot be eliminated, heat insulation reduces temperature changes, etc., and achieves the effect of improving use efficiency

Active Publication Date: 2019-05-31
领航智飞管理咨询(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adiabatics can only reduce the amount of temperature change, not eliminate it

Method used

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  • Constant low temperature storage system and method for removing Dewar fog
  • Constant low temperature storage system and method for removing Dewar fog
  • Constant low temperature storage system and method for removing Dewar fog

Examples

Experimental program
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Embodiment 9

[0107] Such as Figure 10 , Figure 11 As shown, the structure of Embodiment 9 of the constant low temperature storage system of the present invention includes:

[0108] Dewar 1: includes a bottle body 2 and a foam cover 3 installed on the upper end of the bottle body 2. The bottle body 2 is composed of an inner wall 4 and an outer wall 5. There is a vacuum space 6 between the inner wall 4 and the outer wall 5. The inner cavity of the bottle body 2 A sample storage chamber 7 for storing samples or placing sample containers and a cryogen chamber 8 for containing liquid refrigerant and refrigerant gas are provided, and the cryogen chamber 8 is below the sample storage chamber 7;

[0109] At least one refrigerant input pipeline 9: used to pour the refrigerant from the outside of the Dewar 1 into the refrigerant chamber 8. In this embodiment, there are multiple refrigerant input pipelines 9, and of course there can be one, all of which are protected by the present invention range;...

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Abstract

A constant low temperature storage system and a method of removing dewar mist. The constant low temperature storage system comprises a dewar, at least one refrigerant inlet pipe, an airtight blocking device, at least one external vent pipe and at least one internal vent pipe,, wherein a sample storage room and a refrigerant room are arranged in the dewar; the inlet pipe is use for injecting a refrigerant from the dewar to the refrigerant room; the airtight blocking device is arranged between the sample storage room and the refrigerant room; the external vent pipe is used for venting gas in the refrigerant room out of the dewar; and the internal vent pipe is used for leading cool air in the refrigerant room into the sample storage room. The method of removing the dewar mist includes the steps that dry-filtered air is pressed from the external vent pipe and / or the refrigerant inlet pipe into the refrigerant room; and the gas flows from the internal vent pipe into the sample storage room to remove the mist and / or accelerate refrigeration of a sample after the gas foams in the refrigerant. The constant low temperature storage system and the method of removing the dewar mist can prevent a large quantity of cool air from entering the sample storage room in the process of adding the refrigerant and guarantees a constant storage temperature, and accordingly the service efficiency of the refrigerant is improved. Meanwhile, by pressing the dry-filtered air into the system, the mist in the sample storage room can be removed, and / or the sample can be refrigerated rapidly.

Description

technical field [0001] The invention relates to the technical field of low-temperature storage, in particular to a constant low-temperature storage system for storing biological samples and a method for removing Dewar fog. Background technique [0002] Vacuum Dewars (vacuum flasks) filled with liquid nitrogen (cryogen) are widely used for cryopreservation of biological samples. Cryopreservation of samples can be achieved either by storage in liquid nitrogen or by storage in cold air above the liquid nitrogen. Storing samples in the cold air in a Dewar, known as vapor phase storage, has both advantages and disadvantages. The advantage is that it can avoid mutual contamination between samples co-located in a liquid nitrogen pool and prevent the spread of infectious agents. Its disadvantage is that the temperature of the cold air on the liquid nitrogen surface varies greatly, so it does not have a constant temperature in the volatile liquid nitrogen liquid. [0003] The rise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D81/18B65D81/24B65D85/50
CPCB65D81/18B65D81/24B65D85/50
Inventor 蔡晨宇
Owner 领航智飞管理咨询(北京)有限公司
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