Movable Fan Assemblies for Dynamic Thermal Management
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Solution Overview
Problem
Peripheral processing units, such as infrastructure processing units and graphics cards, face inefficiencies in cooling due to fixed fan locations, which can lead to under-cooled 'hot spots' and disruptions when fans fail, requiring downtime for replacement.
Innovation Solution
A field replaceable fan assembly with a tray that carries a fan, allowing it to be dynamically positioned over the heat sink and adjusted in speed and direction based on temperature monitoring, enabling targeted augmented cooling and minimizing downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed fan locations are used in peripheral processing units, then the device structure is simplified and easier to manufacture, but cooling effectiveness deteriorates due to under-cooled hot spots
Solution Approach 1:
The patent implements a movable fan assembly that can be dynamically repositioned along the heat sink surface. The fan is no longer fixed but can be adjusted to different locations to target hot spots, resolving the contradiction between simplified structure and effective cooling by introducing controlled mobility to the fan positioning system
2Device complexity
If fixed fan locations are used, then device complexity is reduced, but reliability deteriorates when fans fail requiring downtime for replacement
Solution Approach 1:
The movable fan assembly can be repositioned to alternative locations on the heat sink, providing redundancy and flexibility. If one fan fails, the system can potentially relocate fans or adjust positioning to maintain cooling, thereby improving reliability without significantly increasing device complexity
Solution Approach 2:
The system changes the positional parameter of the fan assembly from fixed to variable, allowing dynamic adjustment of fan location based on thermal conditions and failure states, which enhances reliability while maintaining reasonable device complexity
3Ease of operation
If fixed fan locations are used, then the device is easier to operate, but adaptability deteriorates due to inability to address varying hot spots
Solution Approach 1:
The fan assembly is designed with movable capability along the heat sink, allowing it to adapt to varying thermal conditions and hot spot locations. This dynamic positioning system maintains ease of operation through automated or semi-automated control while significantly improving cooling adaptability to different operational scenarios
4Reliability
If fans are replaced when failing, then system reliability is maintained, but productivity deteriorates due to downtime
Solution Approach 1:
The movable fan assembly allows for preventive repositioning or hot-swapping capabilities. Fans can be relocated before failure occurs or replaced without shutting down the peripheral processing unit, maintaining system reliability while eliminating productivity loss from downtime
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 solution provides efficient, dynamic cooling that mitigates hot spots and allows for hot-swapping of fans without disrupting the operation of peripheral processing units, enhancing reliability and performance.
Implementation Method 1
Some peripheral processing units include fans to increase airflow at the heat sink and, thus, the dissipation of the heat
Data Source
AI summary
Example field replaceable fan assemblies for peripheral processing units and related systems and methods are disclosed. An example apparatus includes a temperature sensor; a fan having a base; at least one memory; machine readable instructions; and processor circuitry to execute operations corresponding to the machine readable instructions to determine a first temperature based on an output of the temperature sensor; and cause the base of the fan to move based on the first temperature.