Ion air supply module needle net layout method and ion air supply module
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Solution Overview
Problem
Traditional ionic wind generators with a needle-to-mesh configuration face inefficiencies in air velocity, intensity, and efficiency due to voltage limitations that can lead to spark discharge and reduced wind production.
Innovation Solution
Optimizing the needle-to-mesh electrode configuration by adjusting the distance between emitter needles and the metallic mesh to maximize ionic wind velocity, with specific ranges for distance and spacing to ensure uniform distribution and high capacity, while minimizing the number of needles and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the applied voltage is raised to produce higher ionic wind velocity, then the ionic wind velocity increases, but the discharge changes into a spark causing voltage drop and extremely weak or no ionic wind
Solution Approach 1:
The patent changes the geometric parameters of the electrode configuration, specifically optimizing the distance between emitter needles and metallic mesh (set to 0.7L to 1.3L where L is the optimal distance for maximum velocity) and the spacing between adjacent emitter needles (set to 0.7r to 1.3r where r is the radius of projection area). This parameter optimization allows achieving high ionic wind velocity while maintaining stable corona discharge without spark breakdown
Solution Approach 2:
The patent divides the emitter into multiple needle electrodes arranged in an array rather than using a single emitter. This segmentation distributes the electric field across multiple points, preventing localized field concentration that would lead to spark discharge, while collectively generating strong ionic wind velocity
2Productivity
If the number of emitter needles is increased to improve ionic wind capacity, then the ionic wind capacity increases, but the device complexity and power consumption increase
Solution Approach 1:
The patent determines the optimal number of emitter needles based on the size of the metallic mesh and the optimized spacing parameter r. By setting the distance between adjacent emitter needles to 0.7r to 1.3r, the patent achieves uniform ionic wind distribution with high capacity while minimizing the total number of needles required, thus reducing device complexity and power consumption
3Speed
If the distance between emitter needle and metallic mesh is adjusted to maximize ionic wind velocity, then the ionic wind velocity increases, but the configuration becomes less adaptable to different sizes
Solution Approach 1:
The patent establishes optimized distance ranges (0.7L to 1.3L and 0.7r to 1.3r) rather than fixed values, where L and r are determined based on the specific application requirements and metallic mesh size. This range-based parameter optimization allows the configuration to be adapted to different sizes while maintaining high ionic wind velocity and uniform distribution
Solution Approach 2:
The patent creates a universal configuration method that can be applied to different sized metallic meshes and application scenarios by scaling the parameters L and r accordingly. The optimized distance ranges work across different device sizes, making the solution universally applicable while maintaining performance
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
Enhances ionic wind velocity, intensity, and efficiency while maintaining uniform distribution and reducing power consumption, ensuring stable operation without spark discharge.
Implementation Method 1
high voltage is applied on emitter needle electrode to create an electric field in the vicinity of the tip of the emitter needle which is strong enough to ionize gas molecules in the dielectric surrounding
Implementation Method 2
ionize gas molecules in the dielectric surrounding
Implementation Method 3
Charged particles are induced to move by the strong electric field, and in the process, they will undergo collisions with neutral particles and give them momentum to enable them to flow together, and thereby generating the ionic wind
Data Source
Figure 1
Figure 2~3
AI summary
Provided are an ion air supply module needle net layout method and an ion air supply module. The layout method comprises: step 1, a wind speed test: adjusting a distance between a single discharge needle and a metal net, so that an ion wind speed at the wind speed central point position of the metal net is at the maximum, and measuring a distance value L between a tip of the discharge needle and the metal net; step 2, a projection radius measurement: measuring a wind speed Vr deviating from the wind speed central point position, and when Vr = aVmax, measuring that the distance between a wind speed measurement point and a wind speed central point is r; and step 3, a needle net layout: setting the distance between the tip of the discharge needle and the metal net to be within the range of (0.7-1.3)L, with the distance between tips of two adjacent discharge needles being within the range of (0.7-1.3)r. The present invention improves the air supply speed, air supply volume and air supply efficiency of an ion air supply module.