Heat Exchange Plate With Elongated Protrusions For Strength And Efficiency
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Solution Overview
Problem
Plate-type heat exchangers face challenges in achieving high strength and cost-effectiveness due to the limitations of existing heat exchange plate designs, where inverted-V-shaped patterns provide good fluid distribution but low strength, and dimple patterns offer better strength but compromised fluid distribution and efficiency.
Innovation Solution
A heat exchange plate with alternately arranged recesses and protrusions in two directions, featuring elongated protrusions that enhance transverse fluid distribution and vortex generation, allowing for reduced thickness and increased installation contact area for improved strength and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heat exchange plates with inverted-V-shaped patterns are used, then fluid distribution is improved, but strength is reduced
Solution Approach 1:
The invention applies different geometric features (protrusions with specific aspect ratios) to different regions of the heat exchange plate. The protrusions have optimized dimensions (aspect ratio 0.5-2.0) that locally enhance fluid distribution while maintaining structural integrity. This local optimization allows the plate to achieve good fluid distribution without compromising overall strength.
Solution Approach 2:
The invention changes the geometric parameters of the plate surface features by using protrusions with aspect ratios between 0.5 and 2.0, which is a significant deviation from conventional designs. This parameter optimization enables the plate to simultaneously achieve good fluid distribution and high strength, resolving the contradiction between heat exchange efficiency and structural strength.
2Ease of manufacture
If heat exchange plates are made thinner to reduce cost, then manufacturing cost is reduced, but strength is compromised
Solution Approach 1:
The invention enhances the local quality of the plate surface by adding optimized protrusions that increase structural rigidity without requiring increased plate thickness. These protrusions act as structural reinforcements that allow the use of thinner plates while maintaining sufficient strength, thereby reducing manufacturing cost.
Solution Approach 2:
The invention uses curved surface features (protrusions with optimized aspect ratios) that provide structural strength more efficiently than flat surfaces. The curved geometry of the protrusions distributes stress more effectively, enabling thinner plate designs that maintain required strength levels.
3Productivity
If multiple protrusions and recesses are arranged densely to improve fluid distribution, then heat exchange efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The invention segments the heat exchange plate surface into a regular pattern of protrusions and recesses arranged in alternating rows. This segmentation creates multiple fluid distribution zones that enhance heat exchange efficiency while maintaining a relatively simple, repeatable structural pattern that is easy to manufacture.
Solution Approach 2:
The invention uses smoothly curved protrusions with optimized aspect ratios that can be formed using standard molding or rolling processes. The curved geometry promotes fluid distribution and vortex formation while being manufacturable with conventional equipment, avoiding the need for complex manufacturing processes.
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 design ensures reliable strength and reduced manufacturing costs while maintaining high heat exchange efficiency by optimizing fluid distribution and stress distribution through the elongated protrusions and transitional surfaces, allowing for thinner plates and increased installation contact points.
Implementation Method 1
the elongated shape of the protrusions is more conducive to the generation of vortices. Thus the heat exchange efficiency is increased.
Implementation Method 2
When the heat exchange fluid flows through the channels, it contacts the heat exchange plates, and thereby achieves heat exchange.
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3
AI summary
A heat exchanging board (1) and a board-type heat exchanger provided with the heat exchanging board (1). The heat exchanging board (1) comprises a board main body (11). Multiple recessed portions (12) and multiple raised portions (13) are disposed on the surface of the board main body (11). The multiple recessed portions (12) and the multiple raised portions (13) are disposed in a staggered manner along a first direction (S1) and are disposed in a staggered manner along a second direction (S2) perpendicular to the first direction (S1). Top portions of the multiple raised portions (13) are provided slender forms along the first direction (S1). The heat exchanging board (1) and the board-type heat exchanger provided with the heat exchanging board (1) can ensure good strength of the heat exchanger in the case of ensuring the heat exchanging efficiency, and can reduce manufacturing cost of the heat exchanging board (1).