Electrostatic Filter Refresh for Particulate-Laden Hardware Cooling

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Solution Overview

Problem

Computing devices face operational impairments due to particulate accumulation on filters, leading to reduced airflow and increased power consumption, especially in environments with unfiltered air, which can impact thermal management and system performance.

Innovation Solution

A particulate management system that electrically charges and discharges particulates on filter media using electromagnets, facilitating their migration away from the filter, thereby reducing impedance and maintaining airflow efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If filters are used to remove particulates from air flowing through chassis, then particulate accumulation on filter media occurs, but airflow is blocked and thermal management is impaired

Engineering Contradiction:
Improveparticulate accumulationVSAvoidairflow efficiency
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent applies electrostatic charging to convert the harmful effect of particulate accumulation on filters into a beneficial effect. By charging the filter media, particulates are attracted to and collected on the filter surface, preventing them from entering the chassis while maintaining airflow. The charged particulates are then periodically discharged to prevent filter clogging, thus converting the potential harm of blockage into a beneficial filtration mechanism.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the electrical parameter of the filter media by applying an electrostatic charge. This parameter change allows the filter to attract and hold charged particulates, enabling effective filtration without mechanical blockage. The charge level and discharge timing are controlled to optimize both filtration efficiency and airflow maintenance.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If filters are used to protect hardware components from particulates, then filter media becomes clogged over time, but power consumption increases and operation is impaired

Engineering Contradiction:
Improveparticulate protectionVSAvoidpower consumption
Core Design Contradiction:
Object-affected harmful factorsVSUse of energy by moving object

Solution Approach 1:

The patent converts the harmful effect of particulate accumulation into a beneficial electrostatic filtration mechanism. By charging the filter media, particulates are electrostatically attracted and collected, providing protection without the need for high-power mechanical filtration systems. Periodic discharge of accumulated charge removes particulates efficiently, maintaining low power consumption throughout operation.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent implements periodic discharge of the electrostatic charge from the filter media. Instead of continuous high-power operation, the system periodically releases accumulated charge to remove particulates, then recharges the filter. This periodic action significantly reduces average power consumption while maintaining continuous protection capability.

Inventive Principle:
Principle #19Periodic action

3Adaptability or versatility

If filters are installed to enable operation in unfiltered air environments, then filter impedance increases due to particulate buildup, but airflow through chassis is restricted

Engineering Contradiction:
Improveenvironmental adaptabilityVSAvoidairflow rate
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent enables operation in unfiltered air environments by converting particulate accumulation into a beneficial electrostatic filtration system. The charged filter media attracts and holds particulates, allowing the system to operate in harsh environments without restricting airflow. Periodic discharge prevents impedance buildup, maintaining high airflow rates even in unfiltered environments.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the electrical properties of the filter media to enable electrostatic filtration. By controlling the charge state and discharge timing, the system adapts to different environmental conditions while maintaining optimal airflow rates. This parameter control allows versatile operation across various environments without airflow restriction.

Inventive Principle:
Principle #35Parameter changes

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

Enhances computing device usability in varied environmental conditions by preventing filter clogging and maintaining airflow, allowing operation in environments without filtered air.

Implementation Method 1

activating a field applicator to apply an electric field to a filtration media of a filter covering an opening in a chassis of the data processing system to charge at least a portion of particulates accumulated on the filtration media to a charge level to obtain charged particulates

Methodology Applied
Scientific EffectElectric field charging: Electrostatic Induction

Implementation Method 2

the opening facilitate airflow through the chassis to dissipate heat from the hardware components; while the particulates are being charged to the charge level

Methodology Applied
Scientific EffectElectrophoresis: Electrophoresis

Implementation Method 3

grounding at least a frame of the filter to discharge the charged particulates; while grounding the at least the frame of the filter, identifying that the particulate accumulation elimination event has ended

Methodology Applied
Scientific EffectElectrostatic discharge: Electrostatic Discharge

Data Source

PatentUS12484199B2Management of hardware in environments that include particulates
Publication Date: 2025.11.25 DELL PROD LP
  • US12484199B2 patent drawing
  • US12484199B2 patent drawing
  • US12484199B2 patent drawing

AI summary

Devices, systems, and methods for managing data processing systems are disclosed. The data processing systems may include hardware components that generate heat. The heat may be managed using flows of gasses. Filters may be used to screen particulates entrained in the flows of gasses. The data processing systems may include a system for managing accumulations of particulates over time. The system may refresh the filters over time by reducing the particulate accumulations on the filters.