Vertical Heat Exchange Tubes for Exhaust Gas Cooling
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Solution Overview
Problem
Conventional exhaust gas cooling apparatuses and exhaust heat recovery systems face challenges with high flow resistance and low heat exchange performance due to complex structures and difficult assembly and mass production, particularly in limited spaces.
Innovation Solution
The design features a plurality of heat exchange tubes with a height longer than their width, arranged to reduce flow resistance and enhance heat exchange performance, incorporating specific surface features and a main plate with communication holes for secure fixation, along with a heat radiating fin to improve turbulence and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional heat exchange tubes with complex arrangement structure are used, then heat exchange area is increased, but flow resistance increases and heat exchange performance decreases
Solution Approach 1:
The patent transitions from a conventional horizontal arrangement of heat exchange tubes to a vertical arrangement where tubes extend in the height direction. This dimensional change allows the coolant to flow smoothly from top to bottom without navigating around complex tube configurations, significantly reducing flow resistance while maintaining effective heat exchange area.
2Reliability
If conventional complex structure is used, then heat exchange performance is improved, but assembly and mass production become difficult
Solution Approach 1:
The heat exchange tube is divided into multiple separate sections that can be independently manufactured and then assembled by stacking. This segmentation simplifies the manufacturing process for each individual section while allowing flexible assembly to achieve the desired total heat exchange area, making mass production more feasible.
Solution Approach 2:
Multiple standardized heat exchange tube sections are combined through stacking to form the complete heat exchange assembly. This merging approach allows for modular manufacturing where identical sections can be produced in bulk and then quickly assembled, greatly simplifying both assembly and mass production processes.
3Volume of moving object
If limited space is available, then compact design is required, but flow resistance increases
Solution Approach 1:
By arranging heat exchange tubes vertically in the height direction rather than horizontally, the patent achieves compact footprint while maintaining smooth coolant flow paths. The vertical configuration allows the coolant to flow directly through the tubes without encountering the flow resistance problems associated with compact horizontal arrangements.
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 flow resistance, maximizes heat exchange performance, simplifies assembly, and facilitates mass production by minimizing leakage and the need for separate holes, while maintaining effective heat exchange between coolant and exhaust gas.
Implementation Method 1
the exhaust gas flowing into the EGR cooler is cooled by a coolant (cooling fluid) discharged through the engine
Implementation Method 2
the coolant supplied through the coolant inflow pipe is heat-exchanged with the exhaust gas flowing through the gas tube in the cooler body
Implementation Method 3
a heat radiating fin to improve turbulence and assembly efficiency
Data Source
AI summary
The present invention relates to an exhaust gas cooling apparatus and, more specifically, to an exhaust gas cooling apparatus capable of reducing flow resistance and improving heat exchange performance, the apparatus comprising: a plurality of heat exchange tubes (200), which is spaced apart from each other by a predetermined distance in the width direction and has a height longer than the width, and through which an exhaust gas flows; and a main plate (300) including a first communication hole (310) to which one end of each of the heat exchange tubes (200) is fixed and a second communication hole (320) to which the other end of each of the heat exchange tubes (200) is fixed.