Low-Temperature Storage Insulation Layout for Vacuum Panel Protection
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Solution Overview
Problem
Conventional low-temperature storage systems face challenges in maintaining insulating effectiveness at extremely low temperatures due to thermal contraction of vacuum insulating materials, leading to increased thickness and power consumption, which limits storage volume and efficiency.
Innovation Solution
The use of a vacuum insulating panel with glass wool in a sealed container, disposed on the surface of the foamed insulating material, sets the thickness of the foamed material to maintain the surface temperature above the low-temperature-resistant limit of the panel, preventing thermal destruction and reducing the overall thickness of the insulating box article.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a considerable thickness of foamed insulating material is used to maintain extremely low temperature of −80° C. or less, then the insulating capability is improved, but the storage volume of the inner box is reduced and power consumption increases
Solution Approach 1:
The patent combines vacuum insulating material with foamed insulating material to create a composite insulating structure. The vacuum insulating material provides superior insulation performance with minimal thickness, while the foamed material fills remaining gaps and provides structural support, achieving both high insulating capability and maximized storage volume.
Solution Approach 2:
The patent changes the physical state of the insulating medium by creating a vacuum (removing gas molecules) in the insulating panel, which fundamentally alters the heat transfer mechanism from conduction/convection in foamed material to primarily radiation in vacuum, achieving superior insulation with reduced thickness.
2Volume of stationary object
If vacuum insulating material is used to reduce thickness dimension, then the storage volume is improved, but the bag material undergoes thermal contraction and destruction at extremely low temperatures
Solution Approach 1:
The patent introduces a heat-resistant barrier layer between the vacuum insulating material and the inner box surface. This intermediary layer prevents direct thermal contact with the extremely cold inner box environment, protecting the vacuum bag from thermal contraction and destruction while maintaining insulation effectiveness.
Solution Approach 2:
The patent applies different thermal protection strategies to different parts of the vacuum insulating structure. The barrier layer is selectively positioned at the surface exposed to extreme cold, while other portions can operate at lower temperatures, optimizing both protection and insulation performance locally.
3Use of energy by stationary object
If the thickness of the insulating box article is reduced using vacuum insulating material, then the power consumption is improved, but the insulating effect cannot be maintained due to bag destruction
Solution Approach 1:
The patent implements a protective barrier layer in advance before the vacuum insulating material is exposed to extreme cold temperatures. This pre-positioned barrier prevents thermal damage before it can occur, ensuring the vacuum structure maintains its integrity and insulating effect throughout operation, thereby reducing power consumption sustainably.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances insulating performance, reduces the thickness of the insulating box article, and increases storage volume while preventing thermal destruction of the vacuum panel, thus maintaining efficiency and reducing energy waste.
Implementation Method 1
a vacuum insulating panel disposed on the surface of the outer box on the side of the foamed insulating material
Implementation Method 2
an insulating box article constituted by placing a foamed insulating material between an outer box and an inner box
Implementation Method 3
a space constituted by combining an inner box and an outer box is filled with a foamed insulating material to reduce a leakage of cold in the inner box
Implementation Method 4
the temperature of the surface of the bag lowers below a heat-resistant temperature of the bag owing to the cold. As a result, thermal contraction occurs, and the bag itself is destroyed
Data Source
AI summary
An object is to provide a method of manufacturing a low-temperature storage in which an insulating performance of an insulating box article is enhanced, and an amount of contents of an inner box can be enlarged. In the low-temperature storage comprising: the insulating box article constituted by placing a foamed insulating material between an outer box and the inner box; and a vacuum insulating panel disposed on the surface of the outer box on the side of the foamed insulating material, a thickness dimension of the foamed insulating material between the inner box and the vacuum insulating panel is set so that a temperature of the surface of the vacuum insulating panel on the side of the inner box is not less than a predetermined temperature.