Rail Vehicle Electronic Cooling via Segmented Air Guide
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Solution Overview
Problem
Hot spots in electronic components can be difficult to predict and access, leading to potential damage from exceeded temperature limits, especially in compact designs where conventional cooling methods are hindered by component positioning.
Innovation Solution
An electronic arrangement featuring an air guiding body and a fan that supplies cooling air to the component through strategically positioned air outlets, often within a closed housing, utilizing a heat exchanger for enhanced cooling and an electrically insulating material to prevent electrical issues, allowing for targeted and reliable cooling of components inaccessible for direct fan mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling methods are used with direct fan mounting, then cooling effectiveness is improved for accessible components, but cooling capability is lost for inaccessible hot spots in compact designs
Solution Approach 1:
The cooling system is segmented into a fan unit and a separate air guide body with multiple air outlets. The air guide body is divided into multiple regions with air outlets positioned at different locations to target specific hot spots. This segmentation allows cooling air to be delivered to inaccessible areas without requiring direct fan mounting near each component.
Solution Approach 2:
The air guide body serves as an intermediary between the fan and the electronic components. It receives cooling air from the fan and redistributes it through multiple air outlets to reach hot spots that would be inaccessible to direct fan mounting. The air guide body mediates the cooling function, enabling thermal management of inaccessible components.
2Strength
If the air guide body is made of electrically conductive material, then structural strength is improved, but electrical short circuit risk increases in high-voltage environments
Solution Approach 1:
The air guide body is made of an electrically insulating material that also provides the necessary structural strength. This composite material approach resolves the contradiction by selecting a material that simultaneously satisfies both mechanical strength requirements and electrical insulation requirements for high-voltage environments.
3Temperature
If additional heat exchangers are added to enhance cooling, then cooling performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The air guide body serves multiple functions: it distributes cooling air to multiple hot spots, provides structural support, and acts as an electrical insulator. By making the air guide body multi-functional, the patent avoids adding separate heat exchangers, thereby maintaining simplicity while achieving enhanced cooling performance.
4Temperature
If the housing is opened for air exchange with external environment, then cooling efficiency is improved, but protection against dusty conditions is reduced
Solution Approach 1:
The housing maintains a closed environment that protects electronic components from dusty external conditions. The air guide body redirects cooling air from within the closed housing to inaccessible hot spots, enabling effective cooling without requiring openings in the housing that would expose components to dust and other harmful environmental factors.
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
Effectively minimizes the risk of damage to electronic components by providing targeted cooling, maintaining component reliability even in high-voltage environments and dusty conditions, without requiring architectural revisions or additional heat exchangers, and is particularly suitable for rail vehicles.
Implementation Method 1
a fan (4), wherein the fan (4) supplies the air guide body (3) with cooling air during operation of the electronic arrangement (1)
Implementation Method 2
an air guide body (3) having at least one air outlet (31) through which the air guide body (3) cools the electronic component (2) with the cooling air
Implementation Method 3
utilizing a heat exchanger for enhanced cooling
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
An electronic arrangement (1) is described, comprising at least one electronic component (2), an air guide (3), and a fan (4) that supplies the air guide with cooling air during operation of the electronic arrangement. The air guide has at least one air outlet (31) through which the air guide cools the electronic component with the cooling air. A rail vehicle (9) and a method for manufacturing an electronic arrangement are also described.