Underwater Plasma Electrode Structure for Efficient Water Treatment

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Solution Overview

Problem

Existing underwater plasma discharge systems face limitations in enhancing plasma processing capacity and efficiency due to the constraints of electrode gap size, requiring multiple electrodes and high voltage, and lack the ability to produce nitrogen fertilizer components.

Innovation Solution

A water treatment device with an electrode structure that includes a first and second electrode separated by dielectric members, where micro-bubbles are introduced through seating holes to enhance discharge efficiency, and a gas supply module provides discharge gas for nitrogen-containing bubbles, generating nitrogen fertilizer components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the gap between two electrodes is increased to improve processing capacity, then the processing capacity increases, but the efficiency of power use deteriorates and a large number of electrodes and high voltage are required

Engineering Contradiction:
Improveprocessing capacityVSAvoidefficiency of power use
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent divides the electrode structure into multiple segments including first and second electrodes with dielectric members positioned between them. This segmentation allows the creation of multiple discharge spaces within a compact configuration, enabling increased processing capacity without requiring a single large electrode gap that would reduce power efficiency. The segmented structure with bubble inflow passages further divides the discharge regions to optimize plasma generation throughout the water treatment chamber.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the gap between two electrodes is increased to improve processing capacity, then the processing capacity increases, but the electrode structure complexity increases requiring more electrodes

Engineering Contradiction:
Improveprocessing capacityVSAvoidnumber of electrodes
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent introduces a third dimension by positioning dielectric members between the first and second electrodes, creating a three-dimensional electrode structure with multiple discharge spaces. This dimensional approach allows increased processing capacity without simply adding more electrodes in a linear fashion. The dielectric members with bubble inflow passages create vertical and horizontal discharge regions, utilizing spatial dimensionality to enhance capacity while maintaining a manageable number of electrodes.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If high voltage is applied to increase processing capacity in existing systems, then the processing capacity increases, but the energy consumption and system complexity increase

Engineering Contradiction:
Improveprocessing capacityVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by stationary object

Solution Approach 1:

The patent utilizes pneumatic principles by introducing gas bubbles through the dielectric members into the discharge spaces between electrodes. These bubbles serve as plasma generation media, allowing efficient plasma discharge at lower voltages compared to direct water discharge. The bubble inflow passages deliver controlled gas flow to specific discharge regions, enhancing processing capacity through plasma chemistry while reducing the energy consumption associated with high-voltage requirements.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 device achieves increased plasma discharge efficiency, enhanced sterilization performance, and the production of culture solutions with nitrogen fertilizer components, improving water treatment capabilities.

Implementation Method 1

An underwater plasma discharge is technology for making a plasma state using an underwater discharge

Methodology Applied
Scientific EffectPlasma discharge: Plasma

Implementation Method 2

causing a plasma discharge in water in a gap between the second electrode and the first electrode

Methodology Applied
Scientific EffectElectrical breakdown: Electric Arc

Implementation Method 3

a gas supply module for supplying a gas to the storage space or the flow space such that bubbles are supplied underwater, as a discharge gas

Methodology Applied
Scientific EffectBubble formation: Bubble

Data Source

PatentUS12441637B2Water treatment device using underwater plasma discharge
Publication Date: 2025.10.14 PURE PLATECH CO LTD
  • US12441637B2 patent drawing
  • US12441637B2 patent drawing
  • US12441637B2 patent drawing

AI summary

A water treatment device includes: an electrode structure installed in a storage space in which water is stored or in a flow space in which water flows so as to cause an underwater plasma discharge; and a gas supply module for supplying a gas to the storage space or the flow space such that bubbles are supplied underwater, as a discharge gas, to the electrode structure, wherein the electrode structure includes: a first electrode; a second electrode disposed opposite the first electrode; and a dielectric member disposed in a space between the first electrode and the second electrode.