Segmented Shell Air Ducting for Downstream Component Cooling
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Solution Overview
Problem
Computing devices face challenges in evenly distributing cooling air within a chassis due to varying cooling needs of components and the arrangement of components relative to air movers, leading to overheating and noise issues from high fan speeds.
Innovation Solution
The use of shell-geometry air ducts with interior dividers and air vents to direct and reconfigure air flow, ensuring cool air reaches downstream components, reducing fan speeds and maintaining lower air temperatures, thereby enhancing thermal margins and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single air mover is used to cool all components, then device complexity is reduced, but downstream components receive preheated air and overheat
Solution Approach 1:
The air duct is segmented into multiple channels using interior dividers, allowing a single air mover to deliver cool air to multiple downstream components through separate pathways. This segmentation prevents air mixing and maintains cool air temperature throughout the duct system.
Solution Approach 2:
The air duct acts as an intermediary structure that transports cool air from the air mover to downstream components. The duct with its internal divider system mediates the air flow distribution, ensuring each component receives appropriately directed cool air without direct exposure to preheated air from upstream components.
2Reliability
If fan speed is increased to cool downstream components, then cooling effectiveness improves, but noise increases
Solution Approach 1:
By segmenting the air duct into multiple channels, the system maintains cool air temperature without requiring increased fan speed. Each channel delivers cool air directly to components, improving cooling effectiveness while allowing the fan to operate at lower, quieter speeds.
3Adaptability or versatility
If components are placed far from the air mover, then flexible component placement is achieved, but air temperature at components increases
Solution Approach 1:
The segmented air duct with multiple channels enables cool air to be delivered to components located far from the air mover. Each channel maintains separate cool air flow, allowing components to be positioned at various distances and locations without receiving preheated air, thus providing placement flexibility while maintaining appropriate temperatures.
4Device complexity
If traditional ducting is used without interior dividers, then device complexity is reduced, but cool air cannot reach downstream components effectively
Solution Approach 1:
The air duct incorporates interior dividers that segment the internal volume into multiple channels. This segmentation structure, while adding some complexity to the duct, enables reliable delivery of cool air to downstream components by preventing air mixing and maintaining distinct cool air pathways throughout the duct system.
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 even cooling to all components within the chassis, increases thermal margins, and decreases fan noise by ensuring cool air delivery to downstream components, independent of their proximity to the air mover, allowing for more flexible component placement and reduced fan speed operation.
Implementation Method 1
The air duct is to receive air flow from a first end and direct the air flow to a second end of the air duct. The air duct includes a plurality of channels configured to deliver the air flow to a component furthest downstream from an air mover within the chassis.
Implementation Method 2
An air vent is to be provided within the air duct and enables air within the air duct to escape prior to exiting the air duct at the far end. The air vent is disposed between a first end of the air duct and a second end of the air duct.
Data Source
AI summary
An air duct is described herein. The air duct includes a duct housing having a first end and a second end and at least one vent disposed between the first end and the second end. The air duct also includes a plurality of dividers disposed between the first end and the second end and a plurality of channels. The plurality of channels are disposed between the first end and the second end and are derived from the plurality of dividers. The plurality of channels are to cool a first component and a second component of a computing device, wherein the duct housing is to encompass the first component and the second component. The duct housing is positioned with the first component located upstream of an air flow and the second component disposed downstream of the air flow.