Heat Exchanger Core Fin Stacking to Reduce Air Flow Resistance
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Solution Overview
Problem
Conventional air treatment devices with heat exchangers face inefficiencies in heat transfer due to the design of core fins and films, leading to suboptimal air flow resistance and heat exchange performance.
Innovation Solution
The heat exchanger design incorporates alternately stacked core fins and films with specific port lateral side parts and partitioning ribs, optimizing the air flow passage by varying fin interlayer distances and rib configurations to enhance flow rates and heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional core fins and films are stacked alternately to form air flow passages, then heat exchange structure is formed, but air flow resistance is high and heat transfer efficiency is insufficient
Solution Approach 1:
The port lateral side parts of the core fins are designed with different fin interlayer distances at different positions. Specifically, the fin interlayer distance at the outermost side of the port parts is made longer than at other positions, creating local quality variation that reduces air flow resistance at the inlet/outlet while maintaining compact structure in the heat exchange area.
Solution Approach 2:
The invention introduces a third dimension (fin interlayer distance in the stacking direction) to optimize air flow characteristics. By varying the fin interlayer distance along the stacking direction of core fins, the design creates dimensional variation that simultaneously addresses both heat exchange surface area and air flow resistance.
2Ease of manufacture
If uniform fin interlayer distance is used throughout the heat exchanger, then manufacturing is simplified, but air flow inhibition occurs at port parts
Solution Approach 1:
Instead of uniform fin interlayer distance, the invention applies local quality variation by making the fin interlayer distance longer at the outermost side of port parts compared to other positions. This localized modification optimizes air flow entry and exit without significantly complicating the overall manufacturing process.
3Productivity
If port part partitioning ribs are added to the core fins, then air flow distribution is improved, but device complexity increases
Solution Approach 1:
The port lateral side parts of the core fins are segmented into multiple regions by adding partitioning ribs. These ribs divide the port parts to optimize air flow distribution across different sections, ensuring more uniform air flow patterns while maintaining a relatively simple overall structure.
Solution Approach 2:
Partitioning ribs are added only at specific locations (port lateral side parts) rather than throughout the entire core fin structure. This localized modification improves air flow distribution where it is most needed while minimizing the increase in overall device complexity.
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
This configuration reduces air flow inhibition, increases flow rates, and improves heat exchange efficiency by minimizing resistance and maximizing the flow area within the heat exchanger.
Implementation Method 1
Air flows having two paths and crossing each other causes a heat transfer phenomenon and a total heat exchange process
Data Source
AI summary
A heat exchanger includes: core fins including a first core fin and a second core fin; and films each of which is attached to a side face of each of the core fins. The core fins and the films are alternately stacked. The first core fin and the second core fin are stacked. An air flow passage, formed by the alternately stacked core fins and films and the stacked first core film and second core film, includes: a first port part serving as a first inlet; and a second port part facing the first port part and serving as a first outlet. An air flow flows from the first inlet to the first outlet in an air flow direction. The first core fin and the second core fin each include a port lateral side part that constitutes one of the first port part and the second port part.