Plasma Generation Device With Arc-Microwave Volume Expansion
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Solution Overview
Problem
Existing plasma torches struggle to generate a sufficient volume of plasma, leading to reduced processing efficiency, particularly in applications requiring high-temperature plasma for waste gas treatment.
Innovation Solution
A plasma generation device that incorporates an electromagnetic wave generator and waveguide to heat one side of the plasma generated by a plasma torch, using electromagnetic waves transmitted perpendicular to the plasma's longitudinal direction, with a predetermined distance of ¼ wavelength from the plasma outlet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If only a plasma torch generating plasma through arc discharge is used, then the device structure remains simple, but the plasma volume is insufficient and processing efficiency is reduced
Solution Approach 1:
The patent combines a plasma torch (arc discharge method) and an electromagnetic wave generator (microwave heating method) into a single plasma generation device. The plasma torch generates initial plasma through arc discharge between electrodes, while the electromagnetic wave generator simultaneously heats the plasma to expand its volume. This merging of two different plasma generation methods allows the device to achieve large plasma volume without requiring an overly complex structure, as both methods work synergistically within an integrated device framework.
Solution Approach 2:
The plasma generation device is designed to perform multiple functions: it can generate plasma through arc discharge using the plasma torch, and simultaneously heat and expand the plasma using electromagnetic waves from the electromagnetic wave generator. This multi-functionality allows the device to achieve both initial plasma formation and subsequent plasma expansion, resolving the contradiction between maintaining simple structure and achieving sufficient plasma volume.
2Productivity
If electromagnetic wave generator and waveguide are added to heat plasma, then plasma volume is enlarged, but device complexity increases
Solution Approach 1:
The electromagnetic wave generator and waveguide are merged with the plasma torch into an integrated plasma generation device. The waveguide serves as both a transmission component for electromagnetic waves and as a structural element that guides plasma. This merging reduces the number of separate components and simplifies the overall device structure while still achieving the dual function of plasma generation and expansion, thereby improving processing efficiency without proportionally increasing device complexity.
3Volume of moving object
If electromagnetic wave heats plasma at a position spaced apart by predetermined distance from plasma outlet, then plasma volume is maximized, but the positioning precision requirement increases
Solution Approach 1:
The patent specifies that the waveguide should be positioned at a distance of approximately 1/4 wavelength from the plasma outlet, which is a specific parameter optimization. This parameter setting allows the electromagnetic wave to effectively heat the plasma and maximize plasma volume expansion. By providing this specific parameter guidance, the patent reduces the need for high positioning precision while still achieving optimal plasma volume, as the 1/4 wavelength positioning is a straightforward measurement based on the electromagnetic wave properties rather than requiring complex precision alignment.
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 device enlarges plasma volume, improving energy efficiency by maintaining the same power usage, enhancing the plasma's reaction time and temperature distribution.
Implementation Method 1
an electromagnetic wave generator (50) for generating an electromagnetic wave (80); a waveguide (40) for guiding the electromagnetic wave (80) generated by the electromagnetic wave generator (50) to be transmitted to the plasma side, wherein the electromagnetic wave transmitted through the waveguide (40) heats one side portion of the plasma
Implementation Method 2
a plasma torch (20) for generating plasma (70) by arc discharge
Data Source
AI summary
Disclosed is a plasma generation device. A plasma generation device, according to an exemplary embodiment of the present invention, comprises: an electromagnetic wave generator; a plasma torch which generates plasma by arc discharge; and a waveguide which guides an electromagnetic wave generated by the electromagnetic wave generator to be transmitted to the plasma side, wherein the electromagnetic wave transmitted through the waveguide heats one side portion of the plasma.