Vacuum Insulation Body with Protective Plate to Prevent Casing Damage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vacuum insulation bodies face challenges in safely and cost-effectively forming a vacuum due to damage to the casing from adsorbent materials and increased thermal conductivity caused by gas permeation, particularly water, which affects their insulation efficiency.
Innovation Solution
A vacuum insulation body design featuring a plate within the vacuum region to protect the casing from adsorbent material damage and a molded part with larger flow cross-sections to enhance gas evacuation, combined with a high-barrier film and filter material to reduce gas permeation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adsorbent material is placed directly in the vacuum region near the opening, then vacuum formation efficiency is improved, but the casing may be damaged by the adsorbent material
Solution Approach 1:
A plate is introduced as an intermediary component between the adsorbent material and the casing. The plate allows gas to pass through to the evacuation port while preventing direct contact between the adsorbent material and the casing, thus protecting the casing from damage while maintaining vacuum formation efficiency
Solution Approach 2:
The vacuum region is segmented into different functional zones: an adsorbent material region for efficient gas removal, a plate structure for protection and flow distribution, and an open space for gas flow. This segmentation allows each component to perform its function without interfering negatively with others
2Reliability
If gas permeation through the casing is reduced, then thermal conductivity remains low, but the cost of high-barrier materials increases
Solution Approach 1:
The patent changes the material parameters of the casing by using multi-layer composite structures with specific barrier properties. This allows achieving low gas permeation rates and maintaining low thermal conductivity while managing costs through optimized material selection and layer thickness
3Reliability
If the evacuation port is sealed after vacuum formation, then vacuum integrity is maintained, but the process requires precise timing and additional sealing operations
Solution Approach 1:
The plate is pre-installed in the vacuum region before vacuum formation begins. This preliminary action ensures that the protective structure is already in place, simplifying the subsequent vacuum formation and sealing operations by preventing potential damage during the process
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
The design ensures safe and efficient vacuum formation, maintains low thermal conductivity, and extends the service life of the insulation by minimizing gas input, achieving <50% rise in thermal conductivity over 15-30 years with low gas permeation rates.
Implementation Method 1
incorporate a material with a high adsorption capacity for water into the vacuum region, in order to keep the partial pressure in the vacuum region low even in the case of entering steam
Implementation Method 2
The plate prevents that the casing or the enveloping film of the vacuum insulation body reproduces the contour of the adsorbent material, which for example can be present as beads or packing
Implementation Method 3
To generate vacuum in the vacuum region, the vacuum insulation body is provided with an evacuation port to which negative pressure is applied and through which the gas is withdrawn from the vacuum region
Implementation Method 4
When the formation of vacuum is completed, the evacuation port, which for example is a film tube, is closed diffusion-tight, i.e. vacuum-tight, for example by thermal sealing
Data Source
AI summary
The present invention relates to a vacuum insulation body with at least one vacuum-tight casing and with at least one vacuum region which is surrounded by the casing, wherein the casing is provided with at least one opening, in particular with at least one evacuation port, for evacuating the vacuum region, and wherein in the vacuum insulation body at least one adsorbent material is disposed, which partly or entirely is arranged in the region of said opening, wherein around the opening and within the vacuum range at least one plate is arranged, which forms a wall of the space in which the adsorbent material is disposed.