Dielectric Plasma Emitter for Liquid Processing
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Solution Overview
Problem
Existing methods for emitting plasma to liquids face issues such as electrode impurities dissolving in the liquid and limited capacity, leading to temperature increases and impracticality in plasma processing.
Innovation Solution
A plasma emitting method and device where a tubular member made of insulating material is used with electrodes on its outer walls, applying voltage to generate plasma within the tubular member, which is then directed to flowing liquid, preventing electrode impurity intrusion and allowing efficient processing of large quantities of liquid without temperature rise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electrodes are immersed in liquid for plasma processing, then plasma can be emitted to the liquid, but electrode impurities dissolve in the liquid causing contamination
Solution Approach 1:
A dielectric layer is introduced as an intermediary between the electrode and the liquid. This dielectric layer prevents direct contact between the electrode and liquid, thereby preventing impurity dissolution while still allowing plasma to be generated and emitted to the liquid through the dielectric barrier.
2Ease of manufacture
If plasma is emitted to a small amount of liquid in a container, then plasma processing can be performed, but the liquid temperature increases significantly
Solution Approach 1:
The system transitions from static liquid in a container to dynamic flowing liquid. The liquid continuously flows through the plasma generation region, ensuring that plasma energy is distributed across a large volume of liquid over time, preventing localized overheating and maintaining stable processing conditions.
3Object-affected harmful factors
If electrodes are not immersed in liquid with vaporized gas, then no plasma is emitted to the liquid, but the liquid quantity is limited and temperature rises
Solution Approach 1:
The system implements continuous plasma emission to continuously flowing liquid. The liquid flow ensures that plasma generation occurs continuously across a large quantity of liquid, maintaining constant processing productivity while the flowing nature prevents temperature accumulation.
4Power
If voltage is applied to electrodes for plasma generation, then plasma is emitted, but electrode constituents dissolve into the liquid
Solution Approach 1:
The dielectric layer serves as a protective intermediary that prevents electrode material dissolution while allowing electrical power to be applied for plasma generation. The dielectric barrier isolates the electrode from the liquid, eliminating material loss while maintaining the electrical field necessary for plasma production.
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
This approach enables the creation of highly oxidized liquid efficiently, preventing electrode contamination and temperature increases, thus enhancing the practicality of plasma emission methods and devices.
Implementation Method 1
voltage being applied to the pair of electrodes. Accordingly, gas present inside the tubular member is plasmarized, and plasma is emitted to the liquid flowing inside the tubular member
Data Source
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AI summary
Water 50 is flowed inside main body section 12 formed from an insulating material such that a specified space remains inside the main body section. Electrodes 14 and 16 are arranged along the outer walls of the main body section and voltage is applied to the electrodes. Processing gas 56 present inside the main body section is plasmarized and plasma is emitted to the water flowing inside the main body section. Thus, it is possible to separate the electrode and the water that is the target for processing, thus it is not necessary to consider the issue of foreign matter getting into the liquid by the dissolving of the electrodes. Also, it is possible to emit plasma to a large quantity of liquid by emitting plasma to a flowing liquid, meaning that plasma-processed water is generated efficiently. Also, it is possible to curtail an increase in the temperature of the liquid by emitting plasma to a flowing liquid.