Plasma Roller With Segmented Dielectric For Irregular Surfaces
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Solution Overview
Problem
Existing plasma roller designs are limited to smooth surfaces and cannot effectively treat irregular or uneven surfaces due to a decrease in plasma field intensity with distance from the contact line, making controlled and defined plasma treatment impossible.
Innovation Solution
A plasma treatment device with a flexibly adaptable roller featuring a highly flexible dielectric and optionally flexible electrode, equipped with elevations and interspaces to form a wide plasma field, allowing the roller to conform to surface irregularities and maintain a relatively uniform plasma field strength across the treatment area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plasma roller with a dielectric barrier is used for surface treatment, then plasma treatment is possible on conductive surfaces, but the plasma field intensity decreases greatly with distance from the contact line, limiting treatment to smooth surfaces only
Solution Approach 1:
The roller surface is segmented into multiple elevations (protrusions) distributed across the rolling surface. This segmentation creates multiple discrete plasma formation zones rather than a single contact line, allowing plasma treatment across a broader surface area while maintaining field intensity. The elevations are arranged in patterns that ensure comprehensive surface coverage during rolling motion.
Solution Approach 2:
The invention transitions from a linear contact line (one-dimensional plasma formation) to a two-dimensional rolling surface with distributed elevations. This dimensional expansion allows the plasma field to be formed across the entire rolling surface area, not just at the contact line, thereby treating both smooth and irregular surfaces effectively while maintaining controlled plasma treatment.
2Area of stationary object
If a flat electrode arrangement is used, then plasma treatment can be applied to large surfaces, but the arrangement cannot adapt to irregularities of the surface
Solution Approach 1:
The invention employs a rolling electrode arrangement that dynamically adapts to surface irregularities through rotational motion and flexible contact. The roller can be pressed against the surface with controlled force, allowing the flexible dielectric barrier to conform to surface variations while maintaining plasma formation. This dynamic approach combines large-area coverage with adaptability to irregular surfaces.
Solution Approach 2:
The dielectric barrier is implemented as a flexible layer surrounding the electrode, allowing it to conform to surface irregularities while maintaining the dielectric barrier plasma discharge. The flexibility of this thin film structure enables adaptation to various surface topographies while preserving the integrity of the plasma formation process across large areas.
3Reliability
If the roller is made rigid for structural stability, then the roller can be mounted reliably, but it cannot adapt flexibly to irregularities of the surface
Solution Approach 1:
The roller is constructed as a composite structure combining a rigid core (for structural stability and reliable mounting) with a flexible dielectric barrier layer (for adaptation to surface irregularities). This composite design allows the rigid electrode core to provide mechanical strength while the flexible dielectric coating enables conformation to various surface topographies, resolving the contradiction between stability and flexibility.
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
Enables controlled and defined plasma treatment on uneven surfaces of various sizes, including human skin, by maintaining a wide plasma field with homogeneous field strength, enhancing the applicability of plasma treatment for disinfection and surface preparation.
Implementation Method 1
air or another gas is ionized by a high-voltage field, but the flow of current resulting in principle because of the high potential differences is prevented by a dielectric arranged in between
Implementation Method 2
In dielectric barrier plasma discharge, air or another gas is ionized by a high-voltage field, but the flow of current resulting in principle because of the high potential differences is prevented by a dielectric arranged in between
Data Source
AI summary
A plasma treatment device for treating a surface with a dielectrically impeded plasma field which is generated between an electrode (16), to which a high voltage is supplied, and the surface, wherein the electrode (16) forms, with a dielectric (17) surrounding the electrode (16), a roller (6) mounted rotatably in a grip housing (1), which roller can be rolled on the surface, has an extended treatment field and enables defined and controlled plasma treatment of the surface by virtue of the fact that the roller (6) is designed such that it can be matched flexibly to irregularities on the surface and has a rolling area with elevations (19, 19′), between which interspaces (20) forming the plasma field are located.