Circular hole and needle based air corona disinfection device
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Solution Overview
Problem
Existing electrostatic precipitator technologies face issues with ozone levels exceeding standards, limited disinfection ability, and excessive thickness, making them unsuitable for direct replacement of traditional filter screens due to space constraints.
Innovation Solution
A circular hole and needle-based air corona disinfection device that generates a high-speed corona zone using a discharge alloy needle at the central axis of metal-surrounded circular holes, controlled within specific voltage and current limits to ensure safety and compliance with ozone emission standards, while enhancing disinfection efficiency and reducing device thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If traditional electrostatic precipitator technology is used, then dust removal function is provided, but ozone level exceeds standards and disinfection ability is limited
Solution Approach 1:
The patent changes the electrical parameters by using pulsed high voltage with specific duty cycles and frequency, rather than continuous DC voltage. This parameter modification allows the system to generate sufficient corona discharge for disinfection while controlling ozone generation within acceptable limits, thus resolving the contradiction between disinfection ability and ozone level.
Solution Approach 2:
The patent employs periodic pulsed voltage instead of continuous voltage. The pulsed operation with controlled duty cycle creates corona discharge only during specific time windows, enabling effective disinfection during the pulse while allowing ozone decomposition during the off-period, thereby simultaneously achieving disinfection ability and controlling ozone levels.
2Length of stationary object
If electrostatic precipitator technology is used, then air purification is achieved, but device thickness is excessive for replacing traditional filter screens
Solution Approach 1:
The patent uses pulsed high voltage parameters to enhance the intensity and efficiency of the corona discharge process. This allows the system to achieve effective air purification in a shorter distance, reducing the required device thickness while maintaining or improving purification efficiency compared to traditional continuous voltage systems.
Solution Approach 2:
The pulsed high voltage approach creates intense corona discharge episodes that rapidly ionize and neutralize particles in the air path. This 'rushing through' approach achieves purification goals in a compressed spatial and temporal manner, enabling thinner device design without sacrificing air purification efficiency.
3Object-generated harmful factors
If pulsed voltage is applied to control ozone, then ozone levels are reduced, but energy consumption increases
Solution Approach 1:
The pulsed voltage system applies high voltage only during necessary time windows (controlled duty cycle) rather than continuously. This periodic action concentrates energy input when corona discharge is needed for particle neutralization, while allowing energy dissipation during off-periods, thus controlling ozone generation while managing overall energy consumption more efficiently than continuous operation.
Solution Approach 2:
By optimizing pulsed voltage parameters including amplitude, duration, and duty cycle, the system achieves effective corona discharge and ozone control with minimized energy input. The parameter optimization ensures that energy is applied only when and where needed, resolving the contradiction between ozone control and energy consumption.
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 achieves effective air disinfection and PM2.5 reduction with minimal ozone generation, allowing for a thinner design that can replace traditional filter screens and reduce maintenance needs.
Implementation Method 1
a tip of a discharge alloy needle discharges to generate a corona zone in the middle of the metal-surrounded circular hole
Implementation Method 2
a power supply configured to provide a voltage, a negative plate with a metal-surrounded circular hole and a positive bracket. The negative plate is connected with a negative electrode of the power supply through a wire
Data Source
AI summary
A circular hole and needle based air corona disinfection device includes: a power supply configured to provide a voltage; a negative plate connected with a negative electrode of the power supply through a wire, and defining a plurality of metal-surrounded circular holes; a discharge alloy needle arranged in each metal-surrounded circular hole; and a positive bracket connected with a positive electrode of the power supply through a wire, in which an end of the discharge alloy needle is fixedly connected inside the positive bracket.