Heat Dissipative Air Guide for Shielding Cage Thermal Management
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Solution Overview
Problem
Existing heat sink devices for electronic components face challenges in optimal airflow due to crowded module configurations, leading to inefficient thermal dissipation, especially in ganged shielding cage assemblies where airflow is restricted.
Innovation Solution
A heat dissipative air guide system with thermal transfer members and an air guide that directs airflow into and out of the shielding cage assembly, utilizing materials with high heat transfer capabilities and strategically designed passages and fins to enhance heat dissipation and electromagnetic interference (EMI) management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic modules are arranged in a ganged configuration within a shielding cage assembly, then the device can accommodate multiple ports and modules, but the crowded arrangement restricts airflow and reduces heat dissipation efficiency
Solution Approach 1:
The thermal transfer member is segmented into multiple discrete passage channels that guide airflow through specific paths. The air guide member is also segmented with multiple openings positioned to direct air to different module regions, allowing independent airflow management for each module while maintaining compact packaging
Solution Approach 2:
The thermal transfer member acts as an intermediary component between the modules and the external environment. It provides a structured interface that channels airflow across module surfaces and facilitates heat transfer without requiring direct exposure of each module to the external environment, thus enabling efficient cooling in dense configurations
2Temperature
If solid fins are used for heat transfer, then heat conduction from modules to air is enhanced, but the structure does not promote airflow from the interior of the shielding cage
Solution Approach 1:
The system transitions from static fins to a dynamic airflow guidance system. The air guide member with its positioned openings creates active airflow paths that adapt to the module configuration, directing air through the thermal transfer passages and across module surfaces to enhance convective heat transfer
Solution Approach 2:
The invention adds the dimension of controlled airflow direction to the traditional fin structure. Instead of relying solely on passive fin surfaces, the system introduces guided airflow paths that move air in specific directions across and through the thermal transfer member, enhancing heat dissipation in the crowded cage environment
3Object-affected harmful factors
If passage lengths are increased to reflect or absorb EMI, then electromagnetic interference is reduced, but the physical dimensions of the thermal transfer member increase
Solution Approach 1:
The thermal transfer member provides localized thermal management at each module position through strategically positioned passages. The air guide member complements this with localized airflow direction at its openings, creating efficient local airflow paths that achieve EMI mitigation without requiring uniformly long passages throughout the entire structure
Solution Approach 2:
The system optimizes passage parameters including length, cross-sectional area, and routing configuration to achieve adequate EMI reflection/absorption. By adjusting these parameters and utilizing the angular disposition between air guide openings and thermal transfer passages, the system achieves electromagnetic shielding effectiveness while maintaining compact dimensions
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
The system effectively directs airflow to improve thermal transfer, reduces EMI escape, and enhances heat dissipation efficiency by ensuring heated air is properly evacuated, even in densely packed electronic module configurations.
Implementation Method 1
formed from a material that has high heat transfer capabilities, such as aluminum
Implementation Method 2
directs air into the interior of the shielding cage assembly and across at least one surface of a module
Implementation Method 3
the lengths of the passages thereof are long enough so that EMI generated by operation of the modules or elements within the enclosure, is mostly reflected or absorbed within the exit passages
Data Source
AI summary
An improved shielding cage assembly that utilizes air guides is disclosed. The shielding cage has a hollow interior configured to receive an electronic module therein which generates heat during operation. An air guide member is provided that defines an entry for surrounding air to enter the shielding cage interior and circulate around the electronic module. A thermal transfer member is provided that defines at least one exit passage for the air in the interior of the shielding cage to exit.