Remote Rack Exhaust Ducting for Quiet Fan-Less Cooling
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Solution Overview
Problem
Conventional thermal management systems in electronic devices, such as computers, often result in overheating, noise, and increased costs due to the need for multiple fans, which also limit space and acoustic performance in large rack-based systems.
Innovation Solution
A remote exhaust system that uses a network of branch and main lines connected to an exhaust pump to remove hot air from heat-generating components to a physically remote environment, reducing the number of fans required, improving acoustics, and allowing for customizable airflow and recycling of hot air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multiple cooling fans are used to cool all components in rack-based systems, then heat dissipation is improved, but noise level increases and room temperature rises
Solution Approach 1:
The patent extracts the exhaust function from individual chassis fans and consolidates it into a single remote exhaust pump located outside the rack. This removes the noise-generating fans from the rack environment while maintaining effective heat dissipation through centralized exhaust pumping.
Solution Approach 2:
The patent introduces ductwork as an intermediary medium to transport hot air from the rack components to the remote exhaust pump. This allows the exhaust function to be separated spatially from the heat-generating components, enabling quiet operation within the rack while maintaining effective thermal management.
2Temperature
If multiple cooling fans are installed in rack systems, then cooling capacity is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple individual chassis exhaust fans into a single centralized remote exhaust pump. This consolidation reduces the total number of fan components from many individual fans to one centralized unit, simplifying the system while maintaining adequate cooling capacity through the ductwork network.
Solution Approach 2:
The remote exhaust pump serves as a universal exhaust solution for multiple chassis simultaneously. Instead of each chassis requiring its own dedicated fan, the single remote pump handles exhaust for the entire rack system through the ductwork network, demonstrating multi-functionality and reducing overall system complexity.
3Temperature
If multiple cooling fans are used, then heat removal is improved, but available space for components decreases
Solution Approach 1:
The patent extracts the exhaust function from within the chassis space and relocates it to a remote pump outside the rack. This removal of fan components from the rack interior frees up valuable space that can be used for additional components or improved airflow channels within the chassis.
Solution Approach 2:
The patent moves the exhaust function from the horizontal plane (fans mounted within the rack) to the external environment (remote pump located outside). This spatial reorganization in another dimension allows the rack interior to be dedicated entirely to component housing and airflow pathways.
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 efficiently dissipates heat, decreases costs, increases space for components, and enhances acoustic performance by eliminating the need for internal fans, while enabling flexible configuration and energy-efficient operation.
Implementation Method 1
the exhaust pump draws cooler air through a front end of the chassis, past at least one heat-generating component... and out the back of the chassis through the branch lines and main line to the remote environment
Data Source
AI summary
Embodiments of remote exhaust for dissipating heat in computers or other electronic devices are disclosed. An exemplary method may include coupling branch lines to each of a plurality of fan-less chassis in the rack system. The method may also include coupling the branch lines to at least one main line. The method may also include connecting the main line to at least one exhaust pump to remove heat generated in each of the plurality of fan-less chassis to a physically remote environment.