High-Temperature Vacuum Insulation Panel With Composite Barrier Shell
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Solution Overview
Problem
High temperature vacuum heat insulators face challenges with long-term heat insulation and barrier properties, flame retardancy, and high manufacturing costs, particularly in high temperature electronic appliances where they suffer from deterioration and lack of self-extinguishability.
Innovation Solution
A high temperature vacuum heat insulator is designed with an inorganic core of glass fibers and a composite shell that includes a heat-fusing layer, a protective layer, a barrier layer, and a flame retardant layer, using materials like phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide to enhance adhesion, impact resistance, gas and moisture blocking, and flame retardancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a vacuum heat insulator uses a simple shell structure, then manufacturing cost is reduced, but flame retardancy and heat resistance are insufficient
Solution Approach 1:
The shell is constructed as a composite film comprising multiple layers with distinct functions: a heat-resistant base layer, a flame retardant layer containing phosphorus compounds and nitrogen compounds, and a protective outer layer. This composite structure integrates flame retardancy, heat resistance, and mechanical protection while maintaining manufacturing feasibility through layer-by-layer fabrication processes
Solution Approach 2:
The shell is divided into functionally distinct layers: the heat-resistant base layer provides structural integrity and thermal stability, the flame retardant layer contains phosphorus and nitrogen compounds for fire suppression, and the protective layer offers mechanical strength and environmental resistance. This segmentation allows each layer to be optimized for its specific function while collectively achieving comprehensive performance
2Duration of action of stationary object
If a vacuum heat insulator uses a heat resistant shell structure, then long-term heat insulation performance is improved, but manufacturing cost increases
Solution Approach 1:
The composite film structure combines heat-resistant materials with flame retardant additives in a layered configuration, achieving long-term thermal stability and fire resistance. The use of phosphorus and nitrogen compounds in the flame retardant layer provides sustained fire suppression capability, while the layered architecture maintains structural integrity under prolonged thermal stress, extending the service life of the insulator
Solution Approach 2:
The shell incorporates flame retardant compounds that undergo chemical parameter changes when exposed to fire, transforming from stable solid compounds to active fire-suppressing species. The phosphorus and nitrogen compounds release flame-inhibiting gases and form protective char layers, dynamically responding to thermal threats while maintaining structural stability
3Ease of manufacture
If a vacuum heat insulator uses conventional shell materials, then manufacturing cost is controlled, but barrier properties deteriorate at high temperatures
Solution Approach 1:
The composite film integrates a heat-resistant base layer with a flame retardant layer containing phosphorus and nitrogen compounds. This composite structure maintains barrier properties at high temperatures by combining the thermal stability of the base layer with the fire-resistant characteristics of the flame retardant layer, preventing material degradation and maintaining vacuum integrity under thermal stress
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 solution achieves improved thermal conductivity (0.01 W/mK or less), reduced power consumption (up to 25% in hot water storage tanks), and simultaneous realization of flame retardancy and heat insulation, making it suitable for various applications including electronic appliances and industrial uses.
Implementation Method 1
a heat-fusing layer which is brought into close contact with a surface of the inorganic core
Implementation Method 2
a barrier layer which blocks permeation of gas or moisture
Implementation Method 3
a protective layer which absorbs and distributes external impact
Implementation Method 4
at least one flame retardant selected from phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide
Data Source
AI summary
The present invention relates to a vacuum insulation panel comprising a core material, and a shell material, and more specifically, to a high temperature vacuum insulation panel usable in a high temperature range. The present invention provides a high temperature vacuum insulation panel including: an inorganic core material comprising glass fiber; and a shell material for sealing the inorganic core material in which the shell material comprises a composite film including a thermal deposition layer adhered to the surface of the inorganic core material, a protective layer for absorbing and dispersing external impact, and a barrier layer for blocking the permeation of gas or moisture between the thermal deposition layer and the protective layer.