Direct Contact Heatsink for Pluggable Network Interface Thermal Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat transfer solutions for pluggable network interface devices rely on convection and conduction cooling methods, which often result in high thermal resistance due to mechanical gaps between heatsinks and heat-generating components, leading to elevated component temperatures.
Innovation Solution
The implementation of a direct contact heat transfer solution where the heatsink is arranged in direct contact with the heat-generating circuit package, eliminating the need for thermal interface materials and thereby reducing thermal resistance and component temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat transfer solutions using convection and conduction cooling methods are used, then heat dissipation is achieved, but thermal resistance increases due to mechanical gaps between heatsinks and heat-generating components
Solution Approach 1:
The heatsink is merged directly with the heat-generating circuit package, eliminating the mechanical gap between them. This direct contact merges the heat source and heat sink into a unified thermal management structure, allowing heat to flow continuously from the component through the heatsink without interruption, thereby reducing thermal resistance and lowering component temperature.
2Manufacturing precision
If mechanical gaps are introduced between heatsink and heat-generating components, then assembly tolerance is improved, but thermal performance deteriorates due to increased thermal resistance
Solution Approach 1:
The invention changes the physical state of the interface between the heatsink and heat-generating component from a gap-filled state to a direct contact state. By eliminating the gap parameter entirely, the thermal resistance is minimized. The design accommodates assembly variations through the heatsink's structural configuration rather than relying on gap-filling materials, maintaining both manufacturing feasibility and thermal performance.
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 approach significantly improves heat conduction by eliminating gaps, resulting in lower component temperatures and enhanced thermal performance in pluggable network interface devices, while also ensuring compliance with standard form factors like OSFP.
Implementation Method 1
The heatsink includes a first surface and a second surface, disposed opposite the first surface, that is maintained in direct contact with a surface of a heat-generating circuit of the PCB
Data Source
AI summary
A pluggable network interface device includes a printed circuit board (“PCB”), a housing, and a heatsink. The heatsink includes a first surface and a second surface, disposed opposite the first surface, that is maintained in direct contact with a surface of a heat-generating circuit of the PCB. The housing includes an outer shell defining an exterior of the housing, a receiving cavity disposed inside the outer shell, and an aperture extending through a first side of the outer shell from the exterior of the housing into the receiving cavity. A portion of the PCB and the second surface of the heatsink are disposed inside the receiving cavity while a portion of the heatsink extends from within the receiving cavity through the aperture arranging the first surface of the heatsink adjacent the exterior of the housing.