High temperature vacuum insulation panel
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Solution Overview
Problem
High temperature vacuum heat insulators face challenges in maintaining long-term heat insulation and barrier properties, flame retardancy, and high manufacturing costs, especially when used in electronic appliances and high-temperature conditions.
Innovation Solution
A high temperature vacuum heat insulator is developed with an inorganic core of glass fibers and a shell comprising a composite film with a heat-fusing layer, protective layer, barrier layer, and a flame retardant layer, which includes phosphorus compounds, nitrogen compounds, aluminum hydroxide, or antimony trioxide, to enhance flame retardancy and barrier properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a vacuum heat insulator uses a heat resistant shell structure and getter material for high temperature electronic appliances, then heat insulation performance is improved, but flame retardancy is lost and manufacturing costs increase
Solution Approach 1:
The shell is constructed as a multi-layer composite film structure combining heat-resistant polymer layers (polyimide, polyetheretherketone) with metal barrier layers (aluminum foil) and flame retardant coatings. This composite structure simultaneously achieves heat resistance, flame retardancy, and barrier properties against gas and moisture permeation.
Solution Approach 2:
The patent specifies precise compositional parameters for the flame retardant coating, including 10-90 wt% flame retardant content and specific ratios of phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide. These parameter optimizations ensure flame retardancy while maintaining heat insulation performance.
2Use of energy by moving object
If a vacuum heat insulator uses a heat resistant shell structure for high temperature applications, then heat insulation performance is improved, but manufacturing costs increase
Solution Approach 1:
The patent optimizes the thickness parameters of each shell layer (heat-fusing layer: 5-50 μm, barrier layer: 1-20 μm, protective layer: 5-50 μm, flame retardant layer: 1-10 μm) to achieve the minimum required performance at lowest cost. The flame retardant coating composition is also optimized with specific concentration ranges to balance performance and material cost.
Solution Approach 2:
Different layers of the shell are assigned different material compositions and thicknesses according to their specific functional requirements. The heat-fusing layer uses heat-resistant polymers for bonding, the barrier layer uses metal foils for gas/moisture blocking, the protective layer uses impact-resistant materials, and the flame retardant layer uses fire-resistant compounds. This localized optimization reduces overall manufacturing cost while maintaining necessary performance.
3Temperature
If a vacuum heat insulator operates at high temperatures, then heat insulation capability is maintained, but long-term heat insulation properties and barrier properties deteriorate
Solution Approach 1:
The shell uses a multi-layer composite structure with heat-resistant polymers (polyimide, polyetheretherketone) that maintain structural integrity at high temperatures, metal barrier layers (aluminum foil) that provide stable gas and moisture blocking, and flame retardant coatings that prevent thermal degradation. This composite structure resists deterioration under continuous high-temperature operation.
Solution Approach 2:
The flame retardant coating is applied in advance to the shell surface, creating a protective layer that prevents thermal degradation and maintains barrier properties before high-temperature operation begins. The heat-resistant polymer layers are also pre-configured to resist thermal breakdown, ensuring long-term stability.
4Reliability
If a vacuum heat insulator uses inorganic heat insulator materials for high temperature conditions, then flame retardancy is achieved, but heat insulation performance is insufficient
Solution Approach 1:
The patent combines organic heat-resistant polymers (polyimide, polyetheretherketone) with inorganic flame retardant materials (phosphorus compounds, nitrogen compounds, aluminum hydroxide, antimony trioxide) in a multi-layer composite structure. This combination achieves both superior heat insulation performance and flame retardancy, overcoming the limitations of using inorganic materials alone.
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 flame retardancy and heat insulation, reducing power consumption by 10% to 25% in hot water storage tanks, and can be widely applied to various fields requiring flame retardancy and heat insulation.
Implementation Method 1
a heat-fusing layer brought into close contact with a surface of the inorganic core
Implementation Method 2
a protective layer absorbing and distributing external impact
Implementation Method 3
a barrier layer blocking permeation of gas or moisture
Implementation Method 4
a flame retardant layer formed by coating a composition including 10% by weight (wt%) to 90 wt% of at least one flame retardant selected from phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide
Implementation Method 5
an inorganic core including glass fibers
Implementation Method 6
a vacuum heat insulator including a core and a shell
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.