Space Modulation Apparatus Gas Phase Plasma Generation
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Solution Overview
Problem
Existing space modification apparatuses face low plasma generation efficiency and insufficient oxidizing components in the modification liquid, leading to weak decomposition capabilities for odorous substances and bacteria.
Innovation Solution
A space modification apparatus that generates a rotating flow of liquid to create a gas phase, applying a pulse voltage to produce plasma within this gas phase, thereby generating a modification liquid with oxidizing components like OH radicals and hydrogen peroxide, which is then sprayed as mist to efficiently decompose odorous substances and bacteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a high voltage pulse is applied to vaporize liquid and generate plasma directly in the liquid, then plasma is generated, but the application voltage is high and plasma generation efficiency is low
Solution Approach 1:
Gas is introduced as an intermediary medium between the electrodes. The gas facilitates plasma generation at lower voltages compared to direct liquid plasma generation. The plasma generated in the gas phase then contacts the liquid surface, transferring active species to the liquid without requiring direct high-voltage breakdown of the liquid itself.
Solution Approach 2:
The invention changes the phase parameter of the working medium from liquid to gas for plasma generation. By generating plasma in the gas phase rather than directly in the liquid, the breakdown voltage is significantly reduced while still achieving effective liquid modification through plasma-liquid interaction at the interface.
2Power
If gas is introduced from the outside and interposed between both electrodes, then application voltage is lowered and plasma generation efficiency is improved, but the apparatus complexity increases
Solution Approach 1:
The liquid being treated serves multiple functions: it is both the target medium to be modified and the source of gas vapor that forms the plasma-generating atmosphere. This eliminates the need for separate gas supply systems while still achieving gas-phase plasma generation between the electrodes.
Solution Approach 2:
The treatment liquid itself vaporizes to provide the gas medium for plasma generation. The system uses its own material (the liquid being treated) to create the conditions necessary for plasma formation, eliminating the need for external gas supply infrastructure and simplifying the overall apparatus design.
3Productivity
If plasma is generated in the liquid directly, then modification liquid is generated, but it takes a long time to modify the liquid
Solution Approach 1:
A pulsed voltage is applied to generate plasma in periodic bursts rather than continuous operation. This allows the liquid to be rapidly modified during each pulse while the inter-pulse periods allow for circulation and distribution of the modified liquid, achieving efficient bulk modification without excessive processing time.
Solution Approach 2:
The system maintains continuous circulation of the liquid through the treatment zone and plasma generation occurs continuously or in rapid succession, ensuring that all liquid receives modification treatment without interruption. This continuous processing approach eliminates idle time and maximizes productivity.
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 enhances plasma generation efficiency with low electric power, improves the ability to decompose odorous substances and bacteria, and allows for effective space modification by spraying the modification liquid as mist, reducing energy input and apparatus size while maintaining stability and efficiency.
Implementation Method 1
a treatment tank that generates a gas phase around a rotating center of a rotating flow of a liquid by rotating the liquid which is introduced from an introduction portion around a central axis to generate the rotating flow
Implementation Method 2
a power source that applies a voltage between the first electrode and the second electrode to generate plasma in the gas phase to generate modification components in the modification liquid
Implementation Method 3
a nozzle that is connected to a stored water discharging portion of the storage tank and discharges the stored water in the storage tank into a treatment target space in a form of mist
Data Source
AI summary
A space modification apparatus includes a treatment tank configured to generate a gas phase around a rotating center of a rotating flow of a liquid by rotating the liquid, a first electrode of which at least a part is in the treatment tank so as to be in contact with the liquid in the treatment tank, a second electrode in contact with the liquid in the treatment tank, and a power source configured to apply a voltage between the first electrode and the second electrode to generate plasma in the gas phase to generate modification components, the modification components being dissolved and dispersed in the liquid, and a modification liquid being generated and retained in a storage tank. The modification liquid is sprayed or scattered from a nozzle into a treatment target space via a supply pump in the form of mist.