Vacuum Adiabatic Panel Structure for Stable Insulation and Support
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Solution Overview
Problem
Existing vacuum adiabatic technologies for refrigerators face challenges in achieving a sufficient adiabatic effect while maintaining a stable vacuum state and preventing heat transfer at temperature contact points, leading to increased manufacturing costs and complexity, as well as limited applicability to household refrigerators.
Innovation Solution
A vacuum adiabatic body comprising a first and second plate member, a sealing part, a supporting unit, and a heat resistance unit, with an extending part to couple with the supporting unit, which maintains a vacuum state and reduces heat transfer between the plate members, utilizing conductive and radiation resistance sheets to enhance adiabatic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a foam urethane adiabatic wall with thickness of about 30 cm or more is provided, then adiabatic performance is improved, but internal volume of the refrigerator is reduced
Solution Approach 1:
The patent changes the physical state of the adiabatic medium from solid foam to vacuum, fundamentally altering the heat transfer parameters. By creating a vacuum environment between the inner and outer cases, the patent eliminates convective and conductive heat transfer, achieving superior adiabatic performance with minimal thickness, thus preserving internal volume while improving insulation effectiveness.
2Reliability
If additional foaming is performed to finish the exterior, then adiabatic performance is improved, but manufacturing cost is increased and manufacturing method is complicated
Solution Approach 1:
The patent merges the adiabatic function with the structural case design by making the outer case itself serve as the adiabatic barrier through vacuum insulation. This eliminates the need for separate foaming processes and additional adiabatic layers, simplifying the manufacturing method while maintaining effective adiabatic performance.
3Volume of stationary object
If a vacuum adiabatic body is applied, then internal volume is increased, but it is difficult to prevent deformation of the cases due to sound pressure in the vacuum state
Solution Approach 1:
The patent applies supporting units that act as counterforces to the atmospheric pressure acting on the vacuum space. These supporting units provide mechanical support to the inner case, counterbalancing the external atmospheric pressure and preventing case deformation, thereby enabling the vacuum adiabatic structure to maintain its shape and integrity.
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 effectively achieves a significant adiabatic effect with reduced heat transfer, maintaining a stable vacuum state and improving manufacturing efficiency, allowing for broader application in household refrigerators and other apparatuses.
Implementation Method 1
a vacuum space part (50) defined as a gap part between the first and second plate members (110, 120)
Implementation Method 2
a conductive resistance sheet (60) for preventing heat conduction between the first and second plate members (110, 120)
Implementation Method 3
a radiation resistance sheet (32) for reducing heat radiation between the first and second plate members (110, 120) through the vacuum space part (50)
Data Source
Figure 1
Figure 2
Figure 3(a)~3(c)
AI summary
A vacuum adiabatic body includes: a first plate member; a second plate member; a sealing part; a supporting unit; a heat resistance unit; and an exhaust port, wherein an extending part extending toward the third space to be coupled to the supporting unit is provided to at least one of the first and second plate members, and the extending part is formed to extend downward from an edge portion of the at least one of the first and second plate members.