Air purifier and air purifying method
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Solution Overview
Problem
The existing air purifiers face challenges in maintaining performance due to the accumulation of fine dust in filters or adsorbents, leading to increased pressure drops and the need for frequent replacement or maintenance of pollutant removal units.
Innovation Solution
The air purifier employs a plasma reaction portion to generate discharge plasma, which purifies the air, and a gas-liquid mixing portion to create a gas-liquid mixture with fine droplets, allowing for improved pollutant removal without the need for frequent replacement of filters or adsorbents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter or adsorbent is used to capture fine dust and pollutants, then pollutant removal efficiency is improved, but the filter and adsorbent require periodic replacement due to degradation from accumulated fine dust
Solution Approach 1:
The patent extracts the captured fine dust and pollutants from the liquid phase and discharges them externally through a discharge pump, rather than allowing accumulation in the liquid. This prevents degradation of the liquid medium and eliminates the need for periodic replacement, thereby extending the service life while maintaining pollutant removal efficiency
Solution Approach 2:
The patent implements a system where captured pollutants are discarded from the liquid phase through external discharge, and the liquid medium is recovered and reused. This continuous recovery and reuse cycle maintains the effectiveness of the liquid medium indefinitely, resolving the contradiction between maintaining removal efficiency and extending service life
2Reliability
If the amount of fine dust captured in a filter or adsorbent increases, then pollutant removal efficiency is improved, but pressure drop in the filter increases
Solution Approach 1:
The patent uses a hydraulic approach by capturing pollutants in a liquid medium instead of a solid filter. The liquid phase allows for continuous removal of captured particles through pumping and external discharge, preventing pressure drop accumulation while maintaining high pollutant removal efficiency throughout operation
3Reliability
If filters or adsorbents are used for pollutant removal, then air purification performance is improved, but frequent maintenance and replacement are required
Solution Approach 1:
The patent implements a self-service system where the liquid medium continuously captures pollutants and the system automatically discharges the contaminated liquid through a pump while replenishing fresh liquid. This automated cycle maintains air purification performance without requiring manual maintenance or replacement operations, significantly reducing the maintenance burden
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 pollutant removal performance by ionizing or decomposing pollutants using discharge plasma and capturing them in a liquid, which can be easily discharged, thus reducing maintenance burdens and maintaining air purifier efficiency.
Implementation Method 1
a discharge region generating discharge plasma
Implementation Method 2
ionizing or decomposing pollutants using discharge plasma
Implementation Method 3
a droplet spraying device arranged in the gas-liquid mixing portion housing and including at least one spray nozzle spraying fine droplets
Implementation Method 4
the impactor may include a porous member for capturing the droplets from the gas-liquid mixture fluid
Data Source
AI summary
An air purifier includes an air inlet portion through which polluted air flows in, a plasma reaction portion connected to and in fluid communication with the air inlet portion and including a discharge region generating discharge plasma, a gas-liquid mixing portion connected to and in fluid communication with the plasma reaction portion, and including a gas-liquid mixing portion housing, a droplet spraying device arranged in the gas-liquid mixing portion housing and including at least one spray nozzle spraying fine droplets, and a fluid mixing device which mixes the fine droplets with first purified air transferred from the plasma reaction portion, and a gas-liquid contact portion connected to and in fluid communication with the gas-liquid mixing portion, defining micro-channels through which a gas-liquid mixture fluid transferred from the gas-liquid mixing portion passes, and including an impactor which captures droplets from the gas-liquid mixture fluid.