Pluggable Module Heat Removal Device Dynamics
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Solution Overview
Problem
High-performance optical transceivers face challenges in heat removal due to poorly optimized mechanical interfaces for cooling, which affects the longevity and reliability of lasers and complicates hot-pluggability in optical data transmission systems.
Innovation Solution
A pluggable module design featuring a heat removal device that is movable between positions, controlled by an armature, to form a thermal pathway with the optical transceiver, allowing for effective heat dissipation while maintaining easy insertion and removal of the transceiver, using a screw to exert controlled vertical force through a high-performance thermal interface material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat removal device is used to effectively remove heat from optical transceivers, then laser lifetime is extended, but the mechanical interface complexity increases and hot-pluggability becomes difficult
Solution Approach 1:
The heat removal device is designed to be movable between a first position (when plug is inserted) and a second position (when plug is removed). The armature enables selective manipulation to move the heat removal device between these positions, allowing the system to adapt its thermal management configuration based on whether a plug is present, thus resolving the contradiction between effective heat removal and hot-pluggability
Solution Approach 2:
The thermal management system is segmented into movable and stationary components. The heat removal device can be independently positioned relative to the plug receptacle, allowing the thermal interface to be engaged or disengaged separately from the electrical/optical connections, thereby simplifying the hot-plugging operation while maintaining effective heat removal when needed
2Loss of energy
If a heat removal device is fixed in position to ensure close contact with the plug, then heat removal efficiency is maximized, but the ability to easily insert and remove the transceiver is compromised
Solution Approach 1:
The heat removal device transitions from a fixed to a dynamic configuration, moving to a first position when the plug is inserted to ensure close thermal contact, and to a second position when the plug is removed. This dynamic positioning maximizes heat removal efficiency during operation while enabling easy hot-plugging by clearing the insertion path
3Reliability
If a thermal interface material is used to ensure good thermal contact, then heat conductivity is improved, but the material can be damaged during repeated insertion and removal operations
Solution Approach 1:
The heat removal device is movable rather than fixed, allowing it to be positioned close to the plug receptacle only when a plug is inserted. The thermal interface material remains undisturbed during plug insertion/removal operations since the heat removal device moves out of the way, preventing damage to the thermal interface material while maintaining excellent thermal contact during operation
Solution Approach 2:
The armature is configured to move the heat removal device to the first position in advance of plug insertion, ensuring the thermal interface is ready before the plug is inserted. This preliminary positioning allows the thermal interface material to make contact without being subjected to mechanical stress during the insertion process
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 enables efficient heat removal from optical transceivers, extending their lifespan and ensuring reliable operation by maintaining close contact with a heat sink, while allowing for easy hot-pluggability without damaging the thermal interface material.
Implementation Method 1
the heat removal device forms a thermal pathway with the plug by which heat is removed from the plug
Implementation Method 2
using a screw to exert controlled vertical force through a high-performance thermal interface material
Data Source
AI summary
A pluggable module is provided and includes a plug receptacle in which a plug is receivable, a housing coupled to the plug receptacle, a heat removal device partially disposable within the housing to assume and be movable between first and second positions and an armature. The armature is interposed between corresponding portions of the housing and the heat removal device and is configured for selective manipulation to thereby move the heat removal device from the second position to the first position. With the plug received in the plug receptacle and the heat removal device in the first position, the heat removal device forms a thermal pathway with the plug by which heat is removed from the plug.