Compact Fine Bubble Generator Using Porous Plate and Low-Pressure Flow

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Solution Overview

Problem

Existing fine bubble generation apparatuses are large in size, costly, and require high-pressure pumps, limiting their ability to generate desired amounts of fine bubbles efficiently, and existing washing methods with fine bubbles do not adequately address environmental impact and skin irritation concerns.

Innovation Solution

A compact fine bubble generation apparatus using a gas-liquid inflow pipe, cylindrical mixed phase generation mechanism, and eddy-current generation mechanism, combined with specific additives like alkali metal salts and surfactants, to produce fine bubbles at lower pressures and in smaller amounts, enhancing washing efficacy without detergents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a large pump and complex facilities are used to generate fine bubbles, then fine bubble generation capability is improved, but device complexity and cost increase

Engineering Contradiction:
Improvefine bubble generation capabilityVSAvoidfacility complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The invention extracts and eliminates the large pump and complex facilities from the fine bubble generation system. Instead of using mechanical pumping systems, the patent uses a simple container with a porous plate that allows water to naturally flow through and generate fine bubbles, thereby achieving fine bubble generation without the need for complex equipment.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system enables self-service fine bubble generation by utilizing the natural flow of water through the porous plate structure. The container design allows water to automatically create fine bubbles as it passes through the porous material, without requiring external pumping or complex control systems.

Inventive Principle:
Principle #25Self-service

2Productivity

If a large pump and complex facilities are used to generate fine bubbles, then fine bubble generation capability is improved, but apparatus size increases

Engineering Contradiction:
Improvefine bubble generation capabilityVSAvoidapparatus size
Core Design Contradiction:
ProductivityVSVolume of moving object

Solution Approach 1:

The invention removes the large pump and extensive facility infrastructure from the system, replacing them with a compact container design. This extraction of unnecessary components directly reduces the overall volume and footprint of the apparatus while maintaining fine bubble generation functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs a simple, disposable-like container structure with a porous plate that can be easily replaced or discarded. This approach eliminates the need for expensive, large-scale permanent installations and reduces the overall apparatus volume by using simple, replaceable components rather than complex, permanent structures.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Productivity

If a large pump and complex facilities are used to generate fine bubbles, then fine bubble generation capability is improved, but cost increases

Engineering Contradiction:
Improvefine bubble generation capabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The invention extracts and eliminates expensive components such as large pumps and complex facilities from the system. By removing these high-cost elements and replacing them with simple container and porous plate structures, the manufacturing cost is dramatically reduced while maintaining fine bubble generation capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent utilizes inexpensive, easily manufactured components including simple containers and porous plates that can be produced at low cost. These replace expensive pump systems and complex facilities, making the overall apparatus much more affordable to manufacture and deploy.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 apparatus generates fine bubbles with high density and small diameters efficiently, providing effective washing without environmental burden or skin irritation, achieving washing effects comparable to detergent use.

Implementation Method 1

a porous plate 42 that allows water to pass through

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

allows water to pass through and generate fine bubbles

Methodology Applied
Scientific EffectSurface tension: Surface Tension

Implementation Method 3

suppression of bacterial growth and decomposition of organic matter

Methodology Applied
Scientific EffectAntimicrobial action:

Data Source

PatentEP3888778B1Fine bubble generation apparatus
Publication Date: 2026.04.08 KINBOSHI INC
  • EP3888778B1 patent drawingFigure 1
  • EP3888778B1 patent drawingFigure 2
  • EP3888778B1 patent drawingFigure 3

AI summary

The present invention relates to a fine bubble generation apparatus 20. More specifically, the present invention relates to a fine bubble generation apparatus which does not need any facilities such as a large pump and which is small in size and low in cost. Furthermore, the present invention also relates to a washing method with fine bubbles produced by use of the aqueous composition and/or the fine bubble generation apparatus.