Locking Mechanism for Liquid-Cooled Pluggable Modules
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Solution Overview
Problem
Information processing devices with movable cold plates for cooling pluggable modules face issues where users may forget to disengage the cold plates, leading to potential damage during the installation or removal of pluggable modules.
Innovation Solution
A pluggable module locking mechanism that automatically prevents the installation or removal of pluggable modules when the cold plates are engaged, and allows installation or removal when the cold plates are disengaged, thereby preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cold plates are made movable to allow easy installation and removal of pluggable modules, then ease of operation is improved, but the risk of damage during installation/removal increases when users forget to disengage cold plates
Solution Approach 1:
The locking mechanism performs a preliminary action by automatically detecting when cold plates are engaged and preventing installation or removal of pluggable modules before damage can occur. The blocking unit is positioned to block bay access in advance when cold plates are in the engaged state, eliminating the need for users to remember to disengage cold plates manually.
Solution Approach 2:
The system implements feedback through the follower component that continuously monitors the position/state of the cold plate engagement mechanism. When the cold plates are engaged, the follower detects this state and triggers the locking mechanism to block bay access, providing real-time feedback-based control to prevent damage.
2Reliability
If a locking mechanism is added to prevent damage during module installation/removal, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism merges multiple functions into a single integrated system: the follower monitors cold plate engagement, the cam converts linear motion to rotational motion, and the blocking unit prevents bay access. This consolidation achieves reliable damage prevention without requiring separate complex control systems, sensors, or actuators for each function.
Solution Approach 2:
The locking mechanism is self-service in that it automatically activates and deactivates based on the cold plate engagement state without requiring external control signals or user intervention. The mechanical components work together autonomously: when cold plates are engaged, the follower automatically positions the cam to block bay access, and when disengaged, the blocking is automatically removed.
3Reliability
If automatic locking based on cold plate engagement is implemented, then protection against inadvertent installation/removal is improved, but the extent of automation increases system complexity
Solution Approach 1:
The patent replaces electronic or software-based automation with a purely mechanical automation system. The follower, cam, and blocking unit work together through mechanical linkages to automatically detect cold plate engagement and prevent bay access. This mechanical substitution achieves automation without requiring sensors, microcontrollers, or complex control logic, thereby limiting the increase in system 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
The locking mechanism ensures that pluggable modules cannot be inadvertently installed or removed while the cold plates are engaged, thereby preventing damage to the cold plates, pluggable modules, and thermal interface materials.
Implementation Method 1
a cold plate may be thermally coupled with the pluggable module, and the cold plate may transfer heat from the pluggable module into a flow of liquid coolant
Implementation Method 2
the cold plate may transfer heat from the pluggable module into a flow of liquid coolant
Data Source
AI summary
An information processing device comprises bays to removably receive pluggable modules, a liquid cooling system comprising cold plates in the bays, and a module locking mechanism. The cold plates are movable between an engaged state with the pluggable modules and a disengaged state. The module locking mechanism prevents insertion and removal of the pluggable modules into or out of the bays if the cold plates are in the engaged state, and allows insertion/removal of the pluggable modules if the cold plates are in the disengaged state. The device may also comprise a cold plate engagement mechanism actuatable to move the cold plates between the engaged and disengaged states, and the module locking mechanism may be mechanically coupled to the cold plate engagement mechanism such that actuation of the cold plate engagement mechanism drives the module locking mechanism to switch between preventing and allowing insertion/removal.