Heat exchanger and corresponding production method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional plate-type heat exchangers produced using Roll-Bonding technology face challenges with material elongation during rolling, leading to inefficiencies and difficulties in precisely positioning heat exchange channels close to the perimeter edge, which limits their effectiveness in cooling or heating zones near the edges.
Innovation Solution
A method that involves depositing detaching material to extend heat exchange channels beyond the predefined shearing perimeter, allowing for a closing edge to be formed in proximity to the perimeter edge during the finishing step, thereby reducing the distance between channels and the edge, enhancing efficiency and enabling precise positioning of connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If Roll-Bonding technology is used to produce plate-type heat exchangers, then the heat exchanger achieves reduced thickness and large heat exchange surface, but material elongation during rolling causes difficulty in precisely positioning heat exchange channels near the perimeter edge
Solution Approach 1:
The detaching material is deposited on the plates before the rolling process, defining the intended position of heat exchange channels in advance. This preliminary positioning allows the circuit design to account for and compensate for the material elongation that will occur during rolling, enabling precise final positioning of channels near the perimeter edge despite the deformation
Solution Approach 2:
The patent changes the design parameter approach by using nominal extension sizes that are deliberately smaller than the final surface area to be covered, accounting for the expected material elongation during rolling. This parameter adjustment allows the heat exchange channels to be positioned closer to the perimeter edge (3-7 mm distance) while maintaining manufacturing precision
2Manufacturing precision
If nominal extension sizes smaller than the final surface area are used in circuit design, then material elongation during rolling is compensated, but the maximum coverage of heat exchanger areas is not achieved and solutions become approximate
Solution Approach 1:
The detaching material is deposited beyond the pre-defined shearing perimeter, allowing the heat exchange channels to extend closer to the final perimeter edge. This preliminary extension, combined with the safety margin in nominal sizing, ensures both precise positioning and maximum area coverage are achieved
Solution Approach 2:
The patent optimizes the nominal extension sizes used in circuit design to balance two requirements: being small enough to compensate for material elongation during rolling (maintaining positioning accuracy) and large enough to allow heat exchange channels to reach close to the perimeter edge (maximizing surface coverage). The optimal distance of 3-7 mm from the edge achieves this balance
3Productivity
If heat exchange channels are positioned close to the perimeter edge, then heat exchange efficiency near edges is improved, but the uncontrollable elongation of material during rolling makes it difficult to identify exact channel positions
Solution Approach 1:
The detaching material is deposited in a pattern that defines the intended heat exchange channel positions before rolling occurs. This preliminary definition, combined with controlled nominal extension sizing, allows exact channel positions to be identified even when channels are positioned close to the perimeter edge, because the deposition pattern accounts for expected material behavior during rolling
Solution Approach 2:
The patent changes the design approach by specifying nominal extension sizes and deposition patterns that incorporate the expected material elongation characteristics. This allows the system to achieve high heat exchange efficiency (channels 3-7 mm from edge) while maintaining the ability to precisely identify channel positions through the predetermined deposition pattern
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 approach allows for efficient heat exchange near the perimeter edges, improving the overall performance of the heat exchanger by reducing the distance between channels and the edge from 35-40 mm to 3-7 mm, enabling precise placement of connectors and optimizing heat transfer.
Implementation Method 1
the process of elongation of the material as a consequence of its compression during the rolling process
Implementation Method 2
The rolling action allows to weld the two plates together on the entire surface of reciprocal contact
Implementation Method 3
The pressure of the air that is delivered has to be high enough to deform at least one of the two plates
Implementation Method 4
a heat exchanger made with two or more plates overlapping and joined together, between which a circuit is made in which a heat-carrier fluid is made to flow
Data Source
AI summary
Heat exchanger, and production method, including at least two plates of metal material, overlapping and reciprocally joined together so as to define a perimeter edge of the heat exchanger, and at least one circuit for the passage of a heat-carrier fluid defined by at least one or more heat exchange channels made between the plates.