Hybrid Plasma Torch Stabilization via Electromagnetic Wave Injection
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Solution Overview
Problem
Conventional high-frequency plasma torches are sensitive to external disturbances, leading to quick quenching and instability when a reactant is introduced, which affects their operational stability and effectiveness in various applications.
Innovation Solution
An electromagnetic wave/high frequency hybrid plasma torch is developed, incorporating an electromagnetic wave oscillator, power supply, plasma-forming gas supply, cooling water channels, and a cylindrical induction coil structure to stabilize the plasma generation process by introducing a high-temperature and high-density plasma flow into the high-frequency plasma generation region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a high-frequency plasma torch is used to heat and process materials, then high-temperature plasma can be generated in a large volume, but the plasma becomes sensitive to external disturbances and reactsant inflow causing quick quenching and instability
Solution Approach 1:
The patent combines electromagnetic wave energy input with high-frequency energy input in a single plasma generation system. The electromagnetic wave oscillator and high-frequency generator work together to create a hybrid energy source that maintains plasma stability while achieving high temperatures, resolving the contradiction between temperature generation and plasma stability
Solution Approach 2:
The patent introduces a reactant supply system that controls the introduction of reactants into the plasma zone. This intermediary control mechanism manages the reactant inflow to prevent harmful quenching effects while maintaining the desired plasma temperature and stability
2Adaptability or versatility
If electrodes are removed to achieve electrodeless discharging, then the plasma torch can operate in various fields, but the system becomes very sensitive to external disturbance factors such as reactant inflow
Solution Approach 1:
The patent merges electromagnetic wave energy input with high-frequency energy input to create a hybrid system that maintains plasma stability without electrodes. This combination provides the versatility needed for various applications while the dual energy source compensates for the lack of electrode stabilization, reducing sensitivity to external disturbances
3Quantity of substance
If a large amount of reactant is introduced into plasma, then the plasma can perform various processing tasks, but it causes fluctuations and quick quenching of the plasma
Solution Approach 1:
The patent introduces a controlled reactant supply system that acts as an intermediary between the reactant source and the plasma zone. This system carefully manages the introduction of reactants, allowing sufficient quantity for processing tasks while maintaining plasma composition stability and preventing harmful quenching effects
Solution Approach 2:
The patent employs a hybrid energy input system that can adjust the ratio of electromagnetic wave energy to high-frequency energy. By changing the energy distribution parameters, the system can compensate for reactant introduction and maintain plasma stability across varying reactant quantities
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 hybrid plasma torch achieves quick quenching of high-frequency plasma and overcomes instability, ensuring stable operation and improved performance in applications such as spray coating and ultrafine powder synthesis.
Implementation Method 1
an electromagnetic wave oscillator configured to oscillate electromagnetic waves
Implementation Method 2
a coaxial induction coil structure having an induction coil inserted in the induction coil structure
Implementation Method 3
cooling water channels through which cooling water is introduced into the high frequency discharge pipe
Implementation Method 4
cooling water channels through which cooling water is introduced into the high frequency discharge pipe and discharged from the high frequency discharge pipe
Data Source
AI summary
The purpose of the present invention is to solve the problems of conventional high frequency plasma torches and develop a plasma torch which enables quick quenching of high frequency plasma and which overcomes instability resulting from the quick quenching. To accomplish the abovementioned objective, according to one embodiment of the present invention, disclosed is an electromagnetic wave high frequency hybrid plasma torch. The electromagnetic wave high frequency hybrid plasma torch may comprise: an electromagnetic wave oscillator for oscillating electromagnetic waves; a power supply unit for supplying power to the electromagnetic wave oscillator; an electromagnetic wave transmission line for transmitting the electromagnetic waves generated by the electromagnetic wave oscillator; a first plasma-forming gas supply unit for injecting a plasma-forming gas; an electromagnetic wave discharge pipe for generating plasma by the electromagnetic waves introduced from the electromagnetic wave transmission line and the plasma-forming gas injected by the first plasma-forming gas supply unit; a high frequency discharge pipe for introducing an electromagnetic wave plasma flow from the electromagnetic wave discharge pipe; an induction coil structure which is coaxial with the high frequency discharge pipe and which has an interior with an induction coil inserted therein; a cooling water channel for introducing cooling water around the high frequency discharge pipe and discharging the cooling water; and a second plasma-forming gas supply unit for introducing a plasma-forming gas into the high frequency discharge pipe.