Aircraft Cooling Module with Dual Non-Return Valves
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Solution Overview
Problem
Existing cooling systems for electronic equipment in aircraft are either overly simplistic or complex, lacking a robust and efficient solution for cooling, especially when the primary air source fails.
Innovation Solution
A cooling and power module system with flexible contacts and magnetic/optical couplers, allowing for reversible common modules to be used in various configurations, combined with a dual non-return valve system and fan integration for efficient air circulation, ensuring reliable cooling regardless of air system status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a basic cooling module is used, then the device complexity is reduced, but the reliability of cooling is insufficient when the primary air source fails
Solution Approach 1:
The cooling module is designed with dual air inlet sources (first air inlet for primary cooling air source, second air inlet for secondary cooling air source) that can both serve the same cooling function. The module can operate with either air source independently, making it universally adaptable to different operating conditions and failure scenarios without requiring complex redundant systems.
Solution Approach 2:
The non-return valves are pre-installed in the air inlets to prevent backflow of air from one inlet to another. This preliminary protective measure ensures that when one air source fails or stops providing cooling air, the other air source can immediately take over without risk of air backflow interfering with the transition, thereby maintaining cooling reliability.
2Reliability
If a complex cooling module with redundant air sources is used, then the reliability of cooling is improved, but the device complexity increases
Solution Approach 1:
The cooling module is segmented into distinct functional components: first air inlet with first non-return valve, second air inlet with second non-return valve, fan, and cooling elements. Each component is independently designed and can be easily replaced or maintained. This segmentation allows the system to achieve high reliability through redundancy while keeping each individual component simple and the overall structure manageable.
Solution Approach 2:
The non-return valves automatically prevent air backflow without requiring external control mechanisms or complex valve actuation systems. The system self-regulates air flow direction based on pressure differentials, eliminating the need for additional sensors, actuators, or control logic that would increase device complexity while maintaining reliability.
3Reliability
If non-return valves are installed in air inlets, then air backflow is prevented, but the device complexity increases
Solution Approach 1:
The non-return valves are designed as simple, inexpensive components that can be easily replaced if needed. Their straightforward mechanical design makes them reliable for preventing air backflow without requiring complex maintenance or control systems. The simplicity of these valves means they add minimal complexity to the overall system while providing essential reliability.
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 solution enables efficient and reliable cooling of electronic equipment in aircraft, reducing maintenance and production costs by allowing identical modules to be used in multiple configurations and ensuring continuous cooling even in case of air system failures.
Implementation Method 1
a fan (140) arranged to move cooling air from the first air inlet (110) towards the electronic module (122)
Implementation Method 2
a first non-return valve (130.1) arranged to allow passage of cooling air from the first air inlet (110) into the housing (101) and to prevent air flow in an opposite direction
Data Source
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AI summary
The invention relates to a cooling module comprising a first air inlet, a second air inlet and an air-discharge vent, said module comprising two check valves, and each check valve being mounted in front of one of the inlets and arranged to allow air to pass into the module and to prevent air from flowing in the opposite direction. The invention also relates to an electronic unit comprising such a housing.