Tool-less Air Filter Enclosure for IHS Node Maintenance
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Solution Overview
Problem
Existing air filtration systems in information handling systems (IHSs) are inefficient and costly to install and maintain, requiring custom designs and tool-based filter replacements, which disrupt device operations and obscure status indicators.
Innovation Solution
An air filter enclosure with a top slot for manual insertion and retention of replaceable filters, attachable to IHS nodes without tools, ensuring compliance with industry standards and maintaining device status visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a custom-designed fan filter assembly is fabricated to meet NEBS standards, then air filtration compliance is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The air filter assembly is divided into separate modular components: a filter holder assembly that attaches to the fan module and a removable filter element. This segmentation allows the holder to be customized for NEBS compliance while using a standardized, off-the-shelf filter element, reducing overall design complexity and cost.
Solution Approach 2:
The filter holder assembly is designed with universal mounting features that can accommodate different fan module configurations. The same holder design can be applied across multiple node types by simply changing the attachment location, eliminating the need for completely custom designs for each node variant.
2Reliability
If a fan filter assembly is fabricated to cover the entire fan intake, then air filtration effectiveness is improved, but ease of filter replacement deteriorates
Solution Approach 1:
The filter assembly is segmented into a permanent holder structure and a removable filter element. The holder remains attached to the fan module while the filter element can be independently removed through a designated access point, enabling easy replacement without tools while maintaining comprehensive coverage.
Solution Approach 2:
The filter element is designed with dynamic accessibility - it is securely held during operation but can be easily removed when needed through a specific access mechanism. This allows the filter to provide continuous protection while enabling simple maintenance operations.
3Reliability
If a retrofitted fan filter assembly is installed to add air filtration, then air filtration compliance is improved, but device availability deteriorates due to complex installation
Solution Approach 1:
The retrofit solution uses a modular filter holder assembly that can be independently installed on existing fan modules. This segmentation allows the filtration system to be added without requiring complex custom fabrication or extensive installation time, maintaining node availability during deployment.
Solution Approach 2:
The filter element is designed as a disposable, off-the-shelf component that can be quickly installed and replaced. This eliminates the need for expensive custom-made filter assemblies and enables rapid deployment and maintenance operations.
4Strength
If a fan filter assembly with handles is used, then structural integrity is improved, but ease of operation deteriorates due to handle interference
Solution Approach 1:
The filter holder assembly is designed as a separate structural component that provides the necessary handles and mounting features, while the filter element itself remains simple and accessible. This segmentation allows the holder to provide structural integrity without the handles interfering with filter removal, as the filter can be accessed through designated openings in the holder.
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
Facilitates easy, tool-free replacement of air filters, ensuring continuous system operation and compliance with stringent industry standards while preserving visual indicators for monitoring.
Implementation Method 1
The air filter filters the air prior to the air entering the node enclosure to remove impurities and possible particulates
Implementation Method 2
The air mover creates cooling air flow through the node to absorb and transfer thermal energy from the at least one heat-generating component
Implementation Method 3
The air mover creates cooling air flow through the node to absorb and transfer thermal energy from the at least one heat-generating component
Data Source
AI summary
An information handling system (IHS) includes a node having a node enclosure provisioned with at least one heat-generating component. A device that provides infrastructure support to the node contains an air mover is attached to the node enclosure. The air mover creates cooling air flow through the node to absorb and transfer thermal energy from the at least one heat-generating component. An air filter enclosure is attachable over an air intake of the device. The air filter enclosure has a top slot sized to receive a manually inserted air filter into an air filter receiving frame. Replacement of the air filter can be achieved without tools. The air filter filters the air prior to the air entering the node enclosure to remove impurities and possible particulates that can damage the internal components of the device.