Electrolyzed Water Generator Segmented Membrane Gas Management

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Solution Overview

Problem

Conventional electrolyzed water generators experience a decrease in electrolyzed water concentration due to retained gases acting as insulators between the anode and cathode, requiring increased voltage to maintain desired concentrations, which can lead to inefficient operation and scale formation.

Innovation Solution

Incorporating a cation exchange membrane with membrane holes and a high electrical resistance material on the cathode's inner surface, along with gaps for water flow between the anode, cation exchange membrane, and cathode, to prevent gas retention and reduce voltage requirements by ensuring efficient gas mixing into the water stream.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the anode and cation exchange membrane are provided in contact with each other, then the device structure is compact, but gas is retained in the gap and acts as an insulator causing voltage to be progressively increased

Engineering Contradiction:
Improvedevice structureVSAvoidelectrolyzed water concentration stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The contact surface between the anode and cation exchange membrane is segmented into multiple contact points rather than continuous contact. This segmentation allows gas to escape through the gaps between contact points while maintaining sufficient electrical contact for current flow, resolving the contradiction between structural compactness and gas retention prevention.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the cation exchange membrane and cathode are provided in contact with each other, then the device structure is compact, but gas is retained in the gap and acts as an insulator causing voltage to be progressively increased

Engineering Contradiction:
Improvedevice structureVSAvoidelectrolyzed water concentration stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The contact surface between the cation exchange membrane and cathode is segmented into multiple contact points rather than continuous contact. This segmentation allows gas to escape through the gaps between contact points while maintaining sufficient electrical contact for current flow, resolving the contradiction between structural compactness and gas retention prevention.

Inventive Principle:
Principle #1Segmentation

3Reliability

If voltage applied between anode and cathode is progressively increased to maintain electrolyzed water concentration, then desired concentration is maintained, but energy consumption increases and scale formation occurs

Engineering Contradiction:
Improveelectrolyzed water concentrationVSAvoidvoltage
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The gaps between contact points, which initially cause gas retention problems, are converted into beneficial gas escape channels. By designing the contact structure to include these intentional gaps, gas can escape smoothly without forming insulating layers, thereby maintaining stable electrolyzed water concentration without requiring progressive voltage increases.

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

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

This configuration maintains electrolyzed water concentration by preventing gas retention, reducing the need for increased voltage and minimizing scale formation, thereby enhancing the efficiency and longevity of the electrolyzed water generation process.

Implementation Method 1

The electrolyzed water generator includes an anode, a cathode, and a cation exchange membrane provided between the anode and the cathode

Methodology Applied
Scientific EffectIon exchange: Ion Exchange

Implementation Method 2

The cathode hole of the cathode is provided with a high electrical resistance material having an electrical resistance value higher than an electrical resistance value of the cathode

Methodology Applied
Scientific EffectElectrical resistance: Electrical Resistance

Implementation Method 3

A gap in which a flow of water occurs is present between the cation exchange membrane and at least one of the anode and the cathode

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentUS11795072B2Electrolyzed water generator and electrolyzed water generation system
Publication Date: 2023.10.24 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US11795072B2 patent drawing
  • US11795072B2 patent drawing
  • US11795072B2 patent drawing

AI summary

An electrolyzed water generator includes anode, cathode, and cation exchange membrane provided between anode and cathode so as to be in contact with at least one of anode and cathode. Gaps in which a flow of water occurs are present between cation exchange membrane and at least one of anode and cathode.