Dielectric Barrier Discharge Plasma Generator for Air-Gap Reduction
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Solution Overview
Problem
Conventional dielectric barrier discharge (DBD) plasma generators suffer from ineffective discharge due to air gaps between high voltage electrodes and dielectric barriers, leading to reduced plasma generation efficiency and overheating.
Innovation Solution
A resiliently deformable mechanism is introduced to bias the high voltage electrode against the dielectric barrier, reducing or eliminating the air gap and enhancing contact between the two components, thereby improving discharge efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air gaps are present between high voltage electrodes and dielectric barriers, then assembly is easier, but discharge efficiency deteriorates due to ineffective discharge
Solution Approach 1:
The high voltage electrode is designed with a resilient portion that can dynamically adjust its position to maintain optimal contact with the dielectric barrier. This dynamic capability allows the electrode to compensate for manufacturing tolerances and thermal expansion, ensuring consistent discharge efficiency without requiring extremely tight assembly tolerances.
Solution Approach 2:
The resilient portion changes the physical state of the electrode contact interface from rigid non-contact to flexible contact. By introducing elasticity as a parameter change, the system achieves both easy assembly and effective discharge, as the resilient material can deform to fill minor gaps while maintaining electrical contact.
2Manufacturing precision
If air gaps are present between high voltage electrodes and dielectric barriers, then manufacturing tolerance is easier to achieve, but plasma generation efficiency deteriorates
Solution Approach 1:
The resilient portion performs self-adjustment to eliminate air gaps without requiring precision assembly. The elastic material automatically deforms to conform to the dielectric barrier surface, making the system self-correcting regarding assembly tolerances while maintaining optimal plasma generation conditions.
3Productivity
If high voltage electrodes are biased against dielectric barriers to reduce air gaps, then discharge efficiency improves, but risk of overheating increases
Solution Approach 1:
The resilient portion is designed with specific material properties and geometric characteristics that concentrate contact pressure at optimal locations. This localized quality ensures maximum discharge efficiency at the contact interface while distributing thermal load through the resilient material's thermal conductivity and heat dissipation capabilities.
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 mechanism significantly reduces ineffective discharge and enhances plasma generation efficiency by ensuring full contact between the high voltage electrode and dielectric barrier, while also incorporating cooling mechanisms to prevent overheating.
Implementation Method 1
a resiliently deformable mechanism operative to bias the high voltage electrode against the first surface of the dielectric barrier
Implementation Method 2
a discharge gap being formed between the second surface of the dielectric barrier and the ground electrode for generating plasma
Data Source
AI summary
A dielectric barrier discharge plasma generator includes a ground electrode and a high voltage electrode which are configured to form a circuit to receive a power input for plasma generation, a dielectric barrier having a first surface attached to the high voltage electrode, and a second surface facing the ground electrode, and discharge gap being formed between the second surface of the dielectric barrier and the ground electrode for plasma generation, and a resiliently deformable mechanism operative to bias the high voltage electrode against the first surface of the dielectric barrier.