Optical Transceiver Rib Structure Gas Flow Heat Dissipation
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Solution Overview
Problem
QSFP-DD optical transceivers face thermal performance challenges due to heat accumulation from high-power active components, as traditional designs often rely on single metallic elements that are insufficient for effective heat dissipation.
Innovation Solution
The optical transceiver incorporates a rib structure on its inner housing surface with gas flow passages between ribs, combined with a heat conductive module and interlayer element, facilitating both thermal conduction and convection to manage heat dissipation, and an external heat sink for enhanced airflow and dust protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional single metallic element heat dissipation design is used, then device structure is simple, but heat dissipation effectiveness is insufficient
Solution Approach 1:
The heat dissipation system is segmented into multiple functional components: heat conductive modules positioned at heat-generating components, interlayer elements between housing layers, and rib structures with gas flow passages. This segmentation allows each component to specialize in specific heat transfer functions (conduction, convection), significantly improving heat dissipation effectiveness while maintaining reasonable structural complexity through modular design.
Solution Approach 2:
Interlayer elements serve as thermal intermediaries between the upper and lower housing layers, conducting heat from the optical communication component through the housing structure to external heat sinks. This intermediary approach enables efficient heat transfer paths without requiring direct structural modifications to the core optical components, resolving the contradiction between heat dissipation effectiveness and device complexity.
2Productivity
If high-power active components are used to increase communication rate, then productivity is improved, but heat accumulation increases
Solution Approach 1:
The patent replaces reliance on passive mechanical thermal mass (single metallic elements) with an active thermal management system incorporating gas flow passages and forced convection pathways. This substitution enables high-power active components to operate at elevated communication rates while the active cooling system dynamically manages the resulting heat accumulation, preventing thermal throttling and maintaining productivity.
Solution Approach 2:
Gas flow passages are integrated into the housing structure to enable pneumatic cooling of high-power active components. The optical communication component generates heat during high-rate data transmission, and the gas flow system carries away this heat through controlled airflow paths, allowing sustained high productivity without excessive heat accumulation that would limit performance.
3Temperature
If multiple heat dissipation components are added, then heat dissipation effectiveness is improved, but device complexity increases
Solution Approach 1:
Multiple heat dissipation functions are merged into integrated structural elements: the housing itself incorporates gas flow passages, the rib structures serve both structural support and heat conduction purposes, and the interlayer elements combine thermal conduction with electrical isolation functions. This merging approach improves heat dissipation effectiveness while minimizing the increase in device complexity by combining multiple functions into unified components rather than adding separate dedicated parts.
Solution Approach 2:
The rib structures and housing components are designed with multi-functionality, serving simultaneously as structural support elements and heat conduction pathways. The interlayer elements provide both thermal conduction and electrical isolation. This universality allows the system to achieve effective heat dissipation through existing structural components rather than adding dedicated heat dissipation parts, thereby improving thermal performance without proportionally increasing device complexity.
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 design effectively prevents heat accumulation by promoting efficient heat transfer and airflow, maintaining optimal performance and reliability of the transceiver by ensuring thermal management within specified temperature ranges.
Implementation Method 1
The optical communication component is in thermal contact with the housing through the heat conductive module and the rib structure
Implementation Method 2
a gas flow passage formed between each pair of adjacent ribs of the rib structure mounted on an inner surface of the housing
Data Source
AI summary
An optical transceiver includes a housing, a rib structure mounted on an inner surface of the housing, an optical communication module accommodated in the housing, and a heat conductive module. A gas flow passage is formed between each pair of adjacent ribs of the rib structure. The optical communication module includes a substrate and an optical communication component, and the optical communication component is in thermal contact with the housing. The heat conductive module is in thermal contact with the rib structure and the optical communication component.