Adaptive DBD Electrode Assembly for Consistent Plasma Gaps
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Solution Overview
Problem
Conventional DBD plasma devices face limitations in scalability and reproducibility due to the need for precise control of electrode distance, which becomes challenging for large area treatments and varying work piece sizes.
Innovation Solution
A plasma device with a mechanically adaptive system using a combination of levers and spacers to maintain a consistent gap distance, allowing the electrodes to self-adapt to different work pieces without requiring elaborate electronic controls or extensive adaptations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the distance between electrodes is increased to treat larger areas, then the treatment area is improved, but the required voltage exceeds commonly available power supplies
Solution Approach 1:
The treatment area is segmented into multiple zones with separate electrode pairs. Each electrode pair treats a localized area with manageable voltage requirements, while the combined effect covers the entire large surface area that would otherwise require excessive voltage.
2Reliability
If the electrode gap width is precisely maintained to ensure reproducibility, then the treatment reproducibility is improved, but the device complexity increases
Solution Approach 1:
The electrode assembly is designed to self-adjust and self-maintain the optimal gap width through mechanical compliance and elastic deformation. The system automatically compensates for variations in workpiece surface topology without requiring external sensors or active control mechanisms, thereby ensuring treatment reproducibility while minimizing device complexity.
3Reliability
If a mechanically adaptive system with levers and spacers is used to maintain consistent gap distance, then the treatment reproducibility is improved, but the device complexity increases
Solution Approach 1:
A flexible dielectric membrane is introduced between the electrode and workpiece. This membrane naturally conforms to the workpiece surface topology while maintaining a consistent effective treatment gap, eliminating the need for complex lever and spacer mechanisms while ensuring treatment reproducibility across varying workpiece geometries.
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 plasma device ensures reliable and reproducible plasma treatment across various materials and work piece sizes, simplifying the application of DBD plasmas and maintaining correct gap distances without complex controls.
Implementation Method 1
A plasma discharge 4 is generated in the gaps between the electrodes 1A, 1B and the work piece 3
Data Source
Figure 1A~2A
Figure 2B~2D
Figure 3A~3C
AI summary
A plasma device (10) comprises a mounting support (11), at least one first lever (12) rotatably mounted on the mounting support (11), at least one second lever (13) rotatably mounted on the at least one first lever (12), and a first electrode (14) attached to the at least one second lever (13).