Die-Cast Heat Exchanger Duct Integration for Seal and Heat Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat exchangers with die-cast elements suffer from hydraulic seal issues due to welding beads and have low thermal efficiency due to external duct portions that do not contribute to heat exchange and cause heat dissipation.
Innovation Solution
The method involves die-casting a heat exchanger using a contoured duct made from an aluminum tube with inner fins, pre-bent and cut to fit inside the die-cast element, eliminating the need for additional welding and enhancing thermal efficiency by integrating the duct within the die-cast element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional welding is used to connect tubular elements to form ducts, then the duct can be assembled from separate components, but the welding beads do not ensure correct hydraulic seal and require additional sealing measures
Solution Approach 1:
The patent merges the duct formation process with the die-casting process by inserting tubular elements into the die before casting. The duct becomes an integrated part of the die-cast element rather than a separate component requiring welding, thus eliminating hydraulic seal issues while maintaining manufacturing ease
Solution Approach 2:
The tubular elements are inserted into the die before the die-casting operation takes place. This preliminary positioning ensures that the duct is correctly placed and will be formed as an integral part of the final die-cast element, avoiding subsequent welding and sealing problems
2Ease of manufacture
If the duct is made with external portions outside the die-cast element, then the duct can be formed from standard tubular elements, but the external portions do not contribute to heat exchange and cause heat dissipation
Solution Approach 1:
The patent merges the duct with the die-cast element by forming the duct inside the die cavity during the die-casting process. This integration ensures that the entire duct length is surrounded by the die-cast material, maximizing heat exchange surface area and eliminating heat dissipation from external portions
Solution Approach 2:
The patent applies different material properties and structural characteristics to different regions: the duct portion inside the die-cast element has optimal thermal contact for heat exchange, while eliminating the need for external duct portions that would have poor thermal performance
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 method ensures a perfect hydraulic seal and improved thermal efficiency by eliminating external welds and optimizing the heat exchange surface, while being economically competitive with existing methods.
Implementation Method 1
The method comprises a step of die-casting at least one element of a heat exchanger by means of a die
Implementation Method 2
a heat exchanger with die-cast elements is provided by a die-cast element that is crossed by a duct in which the fluid with which heat exchange is to be performed flows
Data Source
Figure 1
Figure 2
AI summary
A method (100) for manufacturing a heat exchanger with die-cast elements, comprising a die-casting step (101) for die-casting at least one element of a heat exchanger by means of at least one die (1), further comprising a positioning step (102) for positioning at least one contoured duct (4) inside the die (1), performed prior to the die-casting step (101).