Constant low temperature storage system and method of removing dewar mist

A storage system and low-temperature technology, which is applied to impact-sensitive items, anti-rot containers, biological packaging, etc., can solve problems such as inability to eliminate, heat insulation and reduce temperature changes, and achieve the effect of improving use efficiency

Active Publication Date: 2017-06-13
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 of removing dewar mist
  • Constant low temperature storage system and method of removing dewar mist
  • Constant low temperature storage system and method of removing dewar mist

Examples

Experimental program
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Embodiment 9

[0107] like 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 into the refrigerant chamber 8 from the outside of the Dewar 1. In this embodiment, there are multiple refrigerant input pipelines 9, and of course, it can also 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 present invention relates to the technical field of cryogenic storage, in particular to a constant cryogenic storage system for storing biological samples and a method for removing Dewar mist. Background technique [0002] Vacuum Dewars (thermo flasks) filled with liquid nitrogen (refrigerant) are widely used for cryopreservation of biological samples. The cryopreservation of samples can be achieved either by storing in liquid nitrogen liquid or by storing in cold air on the liquid nitrogen surface. Storing samples in cold air in a Dewar, known as gas-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. The disadvantage is that because the temperature of the cold air on the liquid nitrogen surface varies greatly, it does not have a constant temperature in the volatile liquid nitrogen liquid. ...

Claims

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Application Information

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Patent Type & Authority Applications(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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