Leader Discharge Electrode for Active Component Generation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional discharge devices face challenges in increasing the generation of air ions and charged microparticle liquids while minimizing ozone production, as they struggle to balance energy input and ozone suppression.

Innovation Solution

A discharge device with a discharge electrode and voltage applicator that causes intermittent dielectric breakdown, transitioning from corona to leader discharge, which increases active component generation while maintaining low ozone levels, and includes features like needle-shaped electrodes and a liquid supplying unit for efficient electrostatic atomization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If input energy is increased to increase the generated amount of active component, then the generated amount of active component increases, but ozone production increases

Engineering Contradiction:
Improvegenerated amount of active componentVSAvoidozone production
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent changes the discharge mode parameter from conventional corona discharge to leader discharge by applying a voltage that causes intermittent dielectric breakdown. This parameter change enables the discharge to transition from a continuous corona mode to an intermittent leader discharge mode, where discharge paths are formed and extinguished periodically. This parameter transformation allows achieving higher active component generation while maintaining lower ozone production levels, as the intermittent nature of leader discharge reduces overall energy consumption and ozone generation compared to continuous corona discharge at high energy levels.

Inventive Principle:
Principle #35Parameter changes

2Object-generated harmful factors

If conventional corona discharge is used, then ozone production is suppressed, but the generated amount of active component is limited

Engineering Contradiction:
Improveozone productionVSAvoidgenerated amount of active component
Core Design Contradiction:
Object-generated harmful factorsVSQuantity of substance

Solution Approach 1:

The patent introduces dynamic characteristics to the discharge process by creating intermittent discharge paths through dielectric breakdown. The discharge transitions from a static corona discharge state to a dynamic leader discharge state where discharge paths are periodically formed and extinguished. This dynamic operation allows the system to achieve higher active component generation while maintaining lower average energy input and ozone production, as the discharge occurs in intense but brief intervals rather than continuously.

Inventive Principle:
Principle #15Dynamics

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 effectively enhances the production of active components while keeping ozone levels similar to corona discharge, with leader discharge generating radicals and charged microparticles efficiently, suitable for various applications.

Implementation Method 1

a voltage applicator that applies a voltage to the discharge electrode and thus causes discharge that is further developed from corona discharge at the discharge electrode

Methodology Applied
Scientific EffectCorona discharge: Corona Discharge

Implementation Method 2

a discharge path is intermittently formed by dielectric breakdown so as to stretch from the discharge electrode to a surrounding

Methodology Applied
Scientific EffectDielectric breakdown:

Implementation Method 3

a device that generates air ions by causing a voltage applicator to apply a voltage to a discharge electrode and causing corona discharged at the discharge electrode

Methodology Applied
Scientific EffectIonization: Ionisation

Implementation Method 4

a device that generates a charged microparticle liquid containing radicals by causing corona discharge at a discharge electrode to which a liquid has been supplied

Methodology Applied
Scientific EffectRadical generation:

Data Source

PatentUS11552457B2Discharge device and method for manufacturing same
Publication Date: 2023.01.10 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US11552457B2 patent drawing
  • US11552457B2 patent drawing
  • US11552457B2 patent drawing

AI summary

A discharge device according to the present disclosure includes a discharge electrode and a voltage applicator that applies a voltage to the discharge electrode and thus causes discharge that is further developed from corona discharge at the discharge electrode. The discharge is discharge in which a discharge path is intermittently formed by dielectric breakdown so as to stretch from the discharge electrode to a surrounding. This discharge can be called leader discharge. This makes it possible to increase an amount of generated active component while keeping an increase of ozone small.