Magnetic Field Mask Deflects Charged Microorganisms

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Solution Overview

Problem

Existing masks fail to effectively filter microorganisms, particularly in humid environments, while maintaining breathability and cost-effectiveness, due to limitations in filtering small-dimension particles and high respiratory resistance.

Innovation Solution

A mask with a three-dimensional magnetic field generated by magnets around the breathing zone, combined with an antimicrobial fiber layer, deflects charged microorganisms and enhances filtration efficiency without increasing respiratory resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple layers of non-woven fabrics are superimposed to filter microorganisms, then filtering effect is improved, but respiratory resistance increases and breathability deteriorates

Engineering Contradiction:
Improvefiltering effectVSAvoidbreathability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the traditional mechanical filtration mechanism (multiple fabric layers physically blocking particles) with an electrostatic filtration mechanism. The electrostatically charged filter layer generates electrostatic attraction forces that capture microorganisms and particles, achieving high filtration efficiency without requiring multiple thick fabric layers, thus maintaining breathability and low respiratory resistance.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs a composite mask structure integrating different functional layers: outer layer, intermediate electrostatic filter layer, and inner layer. This composite structure combines the advantages of each layer - the electrostatic layer provides efficient particle capture while the fabric layers provide structural support and comfort, achieving both high filtration effect and good breathability simultaneously.

Inventive Principle:
Principle #40Composite materials

2Ease of operation

If the number of filter layers and respiratory resistance are reduced, then breathability is improved, but filtering effect deteriorates

Engineering Contradiction:
ImprovebreathabilityVSAvoidfiltering effect
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent substitutes mechanical blockage-based filtration with electrostatic field-based filtration. The electrostatically charged fibers create attraction forces that capture particles efficiently, allowing the use of fewer and thinner filter layers. This reduces respiratory resistance and improves breathability while maintaining or enhancing the filtering effect through the electrostatic mechanism.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If fabrics with small apertures are used to filter microorganisms, then filtering effect is improved, but manufacturing cost increases and the mask becomes disposable

Engineering Contradiction:
Improvefiltering effectVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces mechanical filtration requiring very small fabric apertures with electrostatic filtration. The electrostatically charged filter layer can capture sub-micron particles and microorganisms effectively without requiring the fabric itself to have extremely small pores. This allows the use of more durable, washable fabric materials that can be manufactured at lower costs and reused multiple times.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If electrostatic adsorption masks are used, then filtering efficiency is improved, but the mask cannot be cleaned and becomes disposable

Engineering Contradiction:
Improvefiltering efficiencyVSAvoidcleanability
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The patent creates a composite structure where the electrostatic filter layer is integrated with washable fabric layers. The electrostatic layer is designed to be part of a removable or washable assembly, allowing the mask to be cleaned and reused. The fabric layers provide structural integrity that withstands washing, while the electrostatic layer maintains its charging properties through proper material selection and construction.

Inventive Principle:
Principle #40Composite materials

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

The mask effectively reduces inhalation of microorganisms by deflecting their trajectories with a magnetic field, improving filtration efficiency by up to 65.9% to 79.2% compared to single-layer antimicrobial non-woven fabrics, while being washable and reusable, thus addressing breathability and cost concerns.

Implementation Method 1

arranging two or more magnets around the breathing zone of the mask, the magnets generating a three-dimensional magnetic field, so as to change the moving trajectories of charged microorganisms in gas to be inhaled

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

change the moving trajectories of charged microorganisms in gas to be inhaled

Methodology Applied
Scientific EffectLorentz force: Lorentz Force

Data Source

PatentUS11801403B2Method and mask for reducing inhalation of microorganisms
Publication Date: 2023.10.31 THE HONG KONG RES INST OF TEXTILES & APPAREL
  • US11801403B2 patent drawing
  • US11801403B2 patent drawing
  • US11801403B2 patent drawing

AI summary

The present disclosure provides a method for reducing the inhalation of microorganisms, a washable mask for reducing the inhalation of microorganisms, applications of the mask and a method for manufacturing the same. The method for reducing the inhalation of microorganisms includes the steps of: providing a mask with a breathing zone, the breathing zone being used for covering a breathing part of a user; arranging two or more magnets around the breathing zone of the mask, the magnets generating a three-dimensional magnetic field, so as to change the moving trajectories of charged microorganisms in gas to be inhaled thereby increasing the probability of the microorganisms being captured by the filtering material.