Laminated Heat Exchanger Structure for Thin, Corrosion-Resistant Packaging
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Solution Overview
Problem
Conventional heat exchangers face limitations in thinning due to the use of metal materials, leading to size constraints, and the bonding of metal and resin layers in laminate materials affects corrosion resistance and durability in high-temperature environments.
Innovation Solution
A heat exchanger using a laminate structure with a metal heat transfer layer and resin thermal fusion layer bonded via an acid-modified polyolefin-based adhesive agent, containing a polyolefin resin with carboxyl groups and a polyfunctional isocyanate compound, enhances bonding, heat resistance, and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional metal materials are used for heat exchangers, then structural strength is maintained, but thickness cannot be reduced leading to large size
Solution Approach 1:
The patent applies composite materials by combining metal foil layers with resin layers to create a laminate structure. This composite construction allows the heat exchanger to achieve reduced thickness while maintaining structural strength, as the combination of metal and resin provides both mechanical integrity and thermal conductivity without requiring solid metal blocks.
Solution Approach 2:
The patent utilizes thin film technology by employing metal foil and resin film layers that can be laminated together. These thin films enable the heat exchanger to achieve compact thickness while the lamination structure provides the necessary structural strength, replacing conventional thick metal constructions with flexible thin-film composite layers.
2Length of moving object
If metal and resin layers are bonded in laminate materials, then thickness is reduced, but corrosion resistance and durability deteriorate in high-temperature environments
Solution Approach 1:
The patent applies parameter changes by carefully controlling the bonding conditions and adhesive properties in the lamination process. By optimizing parameters such as bonding temperature, pressure, and adhesive composition, the patent achieves strong bonding between metal and resin layers that maintains corrosion resistance and durability even in high-temperature environments, while still enabling thickness reduction.
3Length of moving object
If metal foil and resin layer are bonded, then thinning is achieved, but bonding strength and thermal performance are affected
Solution Approach 1:
The patent uses composite materials by creating a multi-layer laminate structure where metal foil and resin layers are bonded together. This composite construction allows thinning of the overall heat exchanger while maintaining bonding strength through the intimate contact and chemical bonding between the different material layers.
Solution Approach 2:
The patent applies parameter changes by optimizing bonding conditions during the lamination process. By controlling temperature, pressure, and time parameters, the patent ensures strong bonding between metal foil and resin layers, achieving both thinning and maintained bonding strength simultaneously.
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 laminate structure provides a heat exchanger with improved durability, heat resistance, and corrosion resistance, preventing delamination and metal layer corrosion even in high-temperature conditions.
Implementation Method 1
the inner adhesive agent layer is configured by an acid-modified polyolefin-based adhesive agent containing an acid-modified polyolefin-based resin, in which a polyolefin resin having a carboxyl group and a polyfunctional isocyanate compound are used
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3
AI summary
A heat exchanger excellent in heat resistance, antifreeze resistance, water resistant, and durability is provided. The heat exchanger of the present invention includes: an outer packaging member 2 provided with a heat transfer medium inlet 24 and a heat transfer medium outlet 25, the outer packaging member being configured to allow a heat transfer medium flowed to an inside of the outer packaging member from the heat transfer medium inlet 24 to pass through the inside and flow out from the heat transfer medium outlet 25. The outer packaging member 2 is made of outer packaging laminate materials L1 each including a metal heat transfer layer 51 and a resin thermal fusion layer 53 provided on one surface of the heat transfer layer 51. The outer packaging laminate materials are superimposed one on the other, the thermal fusion layers being integrally bonded along peripheral edge portions thereof. The heat transfer layer 51 and the thermal fusion layer 53 of the outer packaging laminate material L1 are laminated via an inner adhesive agent layer 52 made of an acid-modified polyolefin-based adhesive agent containing an acid-modified polyolefin-based resin.