A deep low temperature liquid nitrogen transfer tank

CN224448823UActive Publication Date: 2026-07-03SHANGHAI SQBQ BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI SQBQ BIOTECHNOLOGY CO LTD
Filing Date
2025-08-01
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing cryogenic liquid nitrogen transport containers suffer from problems such as rapid liquid nitrogen evaporation, unstable connections, and inefficient use of internal space, which affect the preservation of biological samples and ease of operation.

Method used

A phase change energy storage device is installed at the bottom of the Dewar jar. The outer shell is designed as a top cover, shell and base structure. The bottom plate of the cryopreservation box is fixed to the inside of the Dewar jar by welding seat to enhance the connection stability and space utilization.

Benefits of technology

It achieves stable temperature control of liquid nitrogen, reduces volatilization, improves vibration resistance, standardizes sample placement, extends the service life, and facilitates sample handling.

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Abstract

This utility model relates to the field of liquid nitrogen transport container technology and discloses a cryogenic liquid nitrogen transport container, comprising: a lid, an outer shell, a Dewar flask, a cryopreservation box bottom plate, and a phase change energy storage device; the Dewar flask is located inside the outer shell, and the opening of the Dewar flask is sealed by the lid; the outer shell includes an upper cover, a shell, and a base, the upper cover is fixed to the Dewar flask, the shell is connected to the lower part of the upper cover and embedded around the Dewar flask, and the base is connected to the lower part of the shell; the cryopreservation box bottom plate is fixed to the inside of the Dewar flask by a welding seat inside the Dewar flask; the phase change energy storage device is located at the bottom of the Dewar flask, and a gap is formed between the phase change energy storage device and the cryopreservation box bottom plate. This utility model stabilizes the temperature through the phase change energy storage device, reducing liquid nitrogen evaporation; adopts a combined outer shell structure to enhance stability; standardizes the placement of cryopreservation boxes, improves space utilization, extends the service life, and ensures safe and convenient sample storage and retrieval.
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