Filter With Conductive Coating Pattern To Reduce Fiber Adhesion

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional non-woven fabric filters face challenges with high pressure loss and adhesion between bent fibers, which reduce dust collection efficiency, and electric dust collecting filters need improved efficiency without increasing pressure loss.

Innovation Solution

A filter with a conductive coating layer pattern and a wrinkle-shaped filter media, where the conductive coating layer pattern has parallel patterns that create a repulsive force between adjacent parts, reducing adhesion and pressure loss, and a charging unit for enhanced dust collection using electric and Van der Waals forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the number of bent mountains is increased to increase filter area, then dust collection efficiency is improved, but adhesion between adjacent bent mountains occurs, reducing dust collection efficiency and increasing pressure loss

Engineering Contradiction:
Improvedust collection efficiencyVSAvoidadhesion between bent mountains
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces mechanical fixing methods (hot melt fixing) with an electrical field-based solution. Conductive patterns are formed on the filter fabric, and when voltage is applied, electrostatic repulsion forces act between adjacent bent mountains to prevent adhesion, eliminating the need for mechanical or thermal fixing processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state and properties of the filter fabric by introducing conductive patterns with specific electrical characteristics. By controlling the conductivity, pattern geometry, and voltage application, the system achieves controllable electrostatic repulsion forces that prevent adhesion while maintaining filter performance.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If hot melt fixing is used to inhibit adhesion between bent mountains, then adhesion is reduced, but an additional process is required and fixing force is deteriorated

Engineering Contradiction:
Improveadhesion between bent mountainsVSAvoidadditional fixing process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces mechanical/thermal fixing processes with an electrical field-based solution. Conductive patterns are formed on the filter fabric, and when voltage is applied, electrostatic repulsion forces act between adjacent bent mountains to prevent adhesion, eliminating the need for mechanical or thermal fixing processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The filter fabric itself, through the conductive patterns integrated into its structure, provides the fixing function. The electrostatic repulsion forces are generated internally by the filter's own conductive elements when voltage is applied, eliminating the need for external fixing processes or additional materials.

Inventive Principle:
Principle #25Self-service

3Productivity

If the space between non-woven fabric fibers is narrowed to increase dust collection rate, then dust collection efficiency is improved, but pressure loss increases

Engineering Contradiction:
Improvedust collection rateVSAvoidpressure loss
Core Design Contradiction:
ProductivityVSStress or pressure

Solution Approach 1:

The patent uses electrostatic forces to enhance dust collection without mechanically compressing the filter fabric to narrow fiber spaces. The conductive patterns generate electrostatic attraction forces that pull dust particles onto the filter fabric, achieving high collection rates while maintaining open fiber structures and low pressure loss.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 solution improves dust collection efficiency while minimizing pressure loss and adhesion between fibers, maintaining the wrinkle shape without additional fixing structures, and effectively collects fine dust particles using electric and Van der Waals forces.

Implementation Method 1

currents of opposite directions to each other may flow between the adjacent parallel patterns. When a voltage is applied to the conductive coating layer pattern, a repulsive force may act between the parallel patterns of adjacent connection parts.

Methodology Applied
Scientific EffectElectromagnetic repulsion: Ion Repulsion/Attraction

Implementation Method 2

a charging unit disposed in a front of the dust collecting unit and charging a dust particle may be further included. The dust particles charged in the charging unit may be collected in the conductive coating layer pattern by an electric force and Van der Waals force.

Methodology Applied
Scientific EffectElectric charging: Electrostatics

Implementation Method 3

The dust particles charged in the charging unit may be collected in the conductive coating layer pattern by an electric force and Van der Waals force.

Methodology Applied
Scientific EffectElectric force: Electrostatics

Implementation Method 4

The dust particles charged in the charging unit may be collected in the conductive coating layer pattern by an electric force and Van der Waals force.

Methodology Applied
Scientific EffectVan der Waals force: Van der Waals Force

Data Source

PatentUS12257587B2Filter and manufacturing method thereof
Publication Date: 2025.03.25 HYUNDAI MOTOR CO LTD
  • US12257587B2 patent drawing
  • US12257587B2 patent drawing
  • US12257587B2 patent drawing

AI summary

A filter manufacturing method includes: folding a filter media up and down and forming a wrinkle shape composed of a plurality of bent parts and a connection part connecting adjacent bent parts among the plurality of bent parts; and forming a conductive coating layer pattern on the filter media. The filter manufacturing method further includes: electrically connecting a first end and a second end of the conductive coating layer pattern to a first power source. In particular, the conductive coating layer pattern includes a plurality of parallel patterns, and the plurality of parallel patterns are formed to be positioned on the connection part.