Heat Exchange Assembly for EMI Shielding and Thermal Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication system receptacle cages face challenges with electromagnetic interference (EMI) leakage due to the design of heat transfer assemblies, which compromise the EMI shielding effectiveness.
Innovation Solution
A heat exchange assembly with a plate stack comprising fin and spacer plates, where the fin plates are independently movable relative to the spacer plates, and a plate stabilizer structure with stabilizing fingers is used to control the spacing and positioning of the fin plates, enhancing thermal interface efficiency and airflow channels while maintaining EMI shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat transfer assembly is attached to the receptacle cage to dissipate heat from the pluggable module, then heat dissipation performance is improved, but EMI shielding effectiveness deteriorates due to the opening in the top wall
Solution Approach 1:
The heat exchange assembly is nested within the receptacle cage structure, with the plate stack positioned inside the cage and the stabilizer structure integrated into the cage walls. This nesting allows the heat dissipation function to be embedded within the EMI shielding structure, enabling both functions to coexist without compromising EMI protection.
Solution Approach 2:
The plate stack with fin plates and spacer plates acts as an intermediary thermal management structure that interfaces with the pluggable module through thermal contact at the lower thermal interface, while the stabilizer structure serves as an intermediary mechanical element that secures the assembly within the cage. These intermediary structures enable heat dissipation without requiring openings in the EMI shielding cage walls.
2Manufacturing precision
If fin plates are made independently movable relative to spacer plates to improve thermal interface articulation, then thermal contact efficiency is improved, but structural stability deteriorates
Solution Approach 1:
The fin plates are designed to be independently movable relative to the spacer plates, allowing the lower thermal interface to dynamically articulate and conform to the surface of the pluggable module. This dynamic capability enables the heat exchange assembly to maintain optimal thermal contact under varying conditions while the stabilizer structure provides static structural support.
Solution Approach 2:
The plate stack is segmented into multiple fin plates and spacer plates that can move independently relative to each other. This segmentation allows each fin plate to articulate independently for optimal thermal contact while the collective assembly maintains structural integrity through the stabilizer structure that positions the fin upper edges relative to each other.
3Productivity
If air flow channels are formed in gaps between fin plates above spacer plates, then heat dissipation efficiency is improved, but EMI leakage risk increases
Solution Approach 1:
The plate stack is designed with localized air flow channels formed in the gaps between fin plates above the spacer plates, creating specific regions for thermal management. The stabilizer structure with plate stabilizers and stabilizing fingers provides localized structural support that maintains the positioning of fin plates while allowing these controlled air flow paths for heat dissipation without compromising overall EMI shielding.
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 solution effectively dissipates heat from electrical components while minimizing EMI leakage by providing improved EMI shielding and efficient thermal management through the articulation of plates and airflow channels, enhancing the overall performance of communication systems.
Implementation Method 1
The fin lower edges and the spacer lower edges define a lower thermal interface configured to be in thermal communication with an electrical component to dissipate heat from the electrical component
Implementation Method 2
Air flow channels are formed in gaps between the fin plates above the spacer plates
Data Source
AI summary
A heat exchange assembly includes a plate stack having fin plates and spacer plates interleaved with the fin plates in the plate stack. Each fin plate has fin sides extending between a fin lower edge and a fin upper edge. Each spacer plate has spacer sides extending between a spacer lower edge and a spacer upper edge. The fin upper edges of the fin plates are located above the spacer upper edges. Air flow channels are formed in gaps between the fin plates above the spacer plates. The fin lower edges and the spacer lower edges define a lower thermal interface configured to be in thermal communication with an electrical component to dissipate heat from the electrical component. The fin plates are independently movable relative to the spacer plates in the plate stack to independently articulate the fin lower edges and the spacer lower edges at the lower thermal interface. The heat exchange assembly includes a plate stabilizer structure positioning the fin upper edges relative to each other. The plate stabilizer structure includes plate stabilizers having stabilizing fingers. The stabilizing fingers coupled to at least two fin plates to control spacing of the fin upper edges of the corresponding fin plates.