Hydrogen Peroxide Decontamination Solution for Mist Charging Control

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Solution Overview

Problem

Hydrogen peroxide mists used for decontamination electrostatically adhere to chamber walls, causing non-uniform wetting and dripping, which leads to insufficient aeration and decontamination effects.

Innovation Solution

A decontamination solution with an adjusted electric conductivity of 14 μS/cm or more, using an organic acid electrolyte, is used to prevent mist charging and wall adhesion, combined with a device and method to discharge and aerate the mist effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If hydrogen peroxide solution is converted into a mist for decontamination, then decontamination efficiency is improved, but the mist electrostatically adheres to wall surfaces causing non-uniform wetting and liquid dripping

Engineering Contradiction:

Improvedecontamination efficiencyVSAvoiduniformity of mist distribution

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The invention changes the electric conductivity parameter of the hydrogen peroxide solution by adding an electrolyte, adjusting it from below 14 μS/cm to 14 μS/cm or more. This parameter change prevents spray charging of the mist particles, eliminating electrostatic adhesion to wall surfaces and achieving uniform mist distribution throughout the working chamber.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If spray charging is used to generate mist for decontamination, then mist generation is achieved, but excessive wetting and liquid dripping occur on wall surfaces

Engineering Contradiction:

Improvemist generation capabilityVSAvoidexcessive wetting and liquid dripping

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The invention modifies the electric conductivity parameter of the decontamination solution by adding electrolytes, raising it to 14 μS/cm or more. This prevents spray charging during mist generation, eliminating the harmful electrostatic adhesion that causes excessive wetting and liquid dripping on wall surfaces while maintaining effective mist generation.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If hydrogen peroxide solution with low electric conductivity is used, then solution purity is maintained, but mist charging occurs leading to non-uniform decontamination effects

Engineering Contradiction:

Improvedecontamination effect uniformityVSAvoidmist charging

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention changes the electric conductivity parameter of the hydrogen peroxide solution by adding electrolytes in controlled amounts, adjusting it from below 14 μS/cm to 14 μS/cm or more. This parameter modification prevents spray charging of mist particles, eliminating the harmful effect of mist charging and ensuring uniform decontamination throughout the working chamber.

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

Prevents mist charging and wall wetting, ensuring uniform decontamination and aeration, maintaining a sterile environment.

Implementation Method 1

the decontamination solution is composed of a hydrogen peroxide solution where an electrolyte increasing the electric conductivity of an aqueous solution is dissolved, wherein the electrolyte is an organic acid and the electric conductivity of the hydrogen peroxide solution is adjusted at 14 μS/cm or more

Methodology Applied

Scientific EffectElectric conductivity adjustment through electrolyte dissolution: Electrolyte

Implementation Method 2

conversion of a liquid having a small electric conductivity such as ultrapure water into a mist generates spray charging

Methodology Applied

Scientific EffectSpray charging:

Implementation Method 3

these spray-charged mists for decontamination electrostatically adhere to a wall surface near a mist discharge port

Methodology Applied

Scientific EffectElectrostatic adhesion: Electrostatics

Implementation Method 4

hydrogen peroxide gas has a strong sterilization effect, and is inexpensively available and effectively utilized as an environmentally-friendly decontamination gas that is ultimately resolved into oxygen and water

Methodology Applied

Scientific EffectDecomposition of hydrogen peroxide: Decomposition (biological)

Data Source

PatentUS20250288711A1Decontamination solution and device and method for decontamination using same

Publication Date: 2025.09.18 AIREX

AI summary

Solution for decontamination of a working chamber that prevents charging a mist for decontamination and excessive wetting and liquid dripping on a wall surface (such as an isolator) inside a space during decontamination of such space with the mist. Device and method for decontamination using the same. The solution includes hydrogen peroxide solution in which a substance increasing the electric conductivity of an aqueous solution is dissolved. The substance may be an electrolyte or an inorganic salt or an organic acid. The decontamination solution preferably has an electric conductivity of 14 μS/cm or more and has a residue on evaporation of 30 ppm or less. The device and the method are configured to discharge the decontamination solution toward the inside of a room to be decontaminated as the mist, thereby decontaminating the inside of the room to be decontaminated.