Hydrophobic Coating for Ion Generation Electrode Support in Air Purifiers
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Solution Overview
Problem
Air cleaning devices with high-voltage electrostatic dusting face issues with reduced effectiveness and shortened lifespan due to insulating instability in high humidity environments, leading to discharge channel formation and arcing noise, which affects the performance and longevity of the apparatus.
Innovation Solution
A high-voltage ionic purification device with an ion generation electrode, a collecting electrode, and a support portion coated with a hydrophobic and electrically insulating material to resist ion bombardment and arcing, along with a method to adjust the transformer's operating frequency to optimize performance, ensuring the device operates efficiently and extends its lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-voltage electrostatic dusting device is used for air cleaning, then dust removal effectiveness is improved, but the device lifespan is reduced due to insulating instability in high humidity environments
Solution Approach 1:
The patent applies a hydrophobic coating to the support portion surface, fundamentally changing the surface properties from hydrophilic to hydrophobic. This parameter change prevents moisture adsorption on the insulating surface, maintaining electrical insulation stability in high humidity environments and preventing discharge channel formation, thus extending device lifespan while maintaining dust removal effectiveness
Solution Approach 2:
The patent uses a composite structure combining the support portion (insulating material) with a hydrophobic coating layer. This composite material approach creates a surface that兼具 electrical insulation properties and moisture repellency, solving the insulating instability problem in humid environments without compromising the high-voltage electrostatic dusting function
2Reliability
If the support portion is made of insulating material, then electrical isolation is achieved, but discharge channels form in high humidity environments due to moisture adsorption
Solution Approach 1:
The hydrophobic coating changes the surface energy parameters of the insulating material, transforming it from a moisture-attracting surface to a moisture-repelling surface. This parameter modification maintains electrical isolation by preventing the formation of conductive moisture paths on the insulating surface, even in high humidity conditions
Solution Approach 2:
The hydrophobic coating acts as an intermediary layer between the insulating support portion and the humid environment. This intermediate layer prevents direct interaction between moisture and the insulating material surface, blocking the formation of discharge channels while preserving the electrical isolation function
3Ease of operation
If the transformer operates at initial frequency, then the system is simple to operate, but performance is reduced due to frequency offset from optimum operating frequency
Solution Approach 1:
The patent implements a dynamic frequency adjustment mechanism that automatically tunes the transformer operating frequency to match the optimum frequency. This dynamic adaptation optimizes transformer performance by eliminating frequency offset issues, while the automated control maintains ease of operation without requiring manual intervention
Solution Approach 2:
The system employs feedback control to monitor and adjust the transformer operating frequency. By continuously comparing the actual operating frequency with the optimum frequency and making real-time adjustments, the system maximizes transformer performance while maintaining simple automated operation through closed-loop control
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 effectively prevents discharge channel formation and arcing noise, maintaining the air cleaning device's performance and extending its lifespan, even in high humidity environments, while optimizing transformer performance by adjusting its operating frequency to match the optimum frequency.
Implementation Method 1
the ion generation electrode is configured to apply a high-voltage; the collecting electrode is disposed opposite to the ion generation electrode and configured to form high electric field between the ion generation electrode and the collecting electrode
Implementation Method 2
a surface of the support portion between the ion generation electrode and the collecting electrode comprises a surface coating layer configured to resist ion bombardment and the accidental arcing
Implementation Method 3
A high-voltage source, shown in FIG. 1, generally includes of two opposing metal components a and b. The two metal components with a gas passage can be assembled together with an insulating frame. When a high voltage is applied on the two metal components, a high-voltage electric field is formed between the two metal components.
Data Source
AI summary
An air cleaning apparatus includes ion generation electrode, a collecting electrode, and a support portion. The ion generation electrode is configured to apply a high-voltage to thereby form a high-voltage electric field between the collecting electrode and the ion generation electrode. A passage is formed between the ion generation electrode and the collecting electrode along the high-voltage electric field direction. The support portion is configured to provide electrical isolation and mechanical support for the ion generation electrode and the collecting electrode. A surface of the support portion between the ion generation electrode and the collecting electrode comprises a surface coating layer configured to resist ion bombardment and the accidental arcing. A transformer frequency adjusting system includes a frequency storage cell, a control module, and a drive module, and can work with the air cleaning apparatus, alone, or with other apparatuses.