Multi-frequency Ionizing Electrode Static Neutralization
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Solution Overview
Problem
Existing static neutralization technologies are limited in effectively neutralizing electrostatically charged objects at a wide range from an ion generating source without the use of a stream of gas or other means.
Innovation Solution
The application of a multi-frequency voltage to an ionizing electrode in an ionizing cell generates a bipolar ion cloud, which is redistributed by a polarizing electrical field, increasing the effective range of ion displacement towards charged objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single-frequency voltage is applied to an ionizing electrode, then the ion generation is simple and device complexity is low, but the effective range of ion displacement is limited
Solution Approach 1:
The patent applies periodic action by using multi-frequency voltages with different frequencies to periodically generate ions of opposite polarities. The first voltage has a first frequency and the second voltage has a second frequency, creating periodic ion generation that redistributes ions over a wider spatial range compared to single-frequency operation.
Solution Approach 2:
The patent implements dynamics by adjusting the frequencies and amplitudes of the applied voltages to dynamically control ion cloud distribution. The system can adaptively optimize the ion displacement range by varying electrical parameters rather than using a fixed single-frequency approach.
2Length of stationary object
If gas streams are used to transport ions to charged objects, then the neutralization range is extended, but additional mechanisms and system complexity increase
Solution Approach 1:
The patent extracts and eliminates the need for gas delivery mechanisms by directly generating and redistributing ions through multi-frequency electrical fields. The ionizing electrode system produces ions in situ and uses electrical field redistribution to extend the neutralization range without requiring external gas streams or mechanical transport systems.
Solution Approach 2:
The patent replaces mechanical gas delivery systems with an electrical field-based ion redistribution mechanism. Instead of using gas flows to transport ions physically, the system uses alternating voltages at different frequencies to create electrical fields that move and redistribute ions to the charged object.
3Area of stationary object
If multiple ionizing electrodes are used to expand coverage area, then the neutralization range increases, but device complexity and cost increase
Solution Approach 1:
The patent makes a single ionizing electrode multi-functional by applying multiple voltages with different frequencies to the same electrode. This allows one electrode to perform the work of multiple electrodes by generating and redistributing ions of both polarities through frequency-modulated electrical fields, thereby expanding coverage area without proportionally increasing the number of physical electrodes.
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 method enhances the range and efficiency of static neutralization by creating and redistributing ions within the ion cloud, effectively neutralizing charged objects over a wider area without the need for additional gas or mechanisms.
Implementation Method 1
When the multi-frequency voltage, measured between the ionizing electrode and a reference electrode available from the ionizing cell, exceeds the corona onset voltage threshold of the ionizing cell, the multi-frequency voltage generates a mix of positively and negatively charged ions
Implementation Method 2
The multi-frequency voltage also redistributes these ions into separate regions according to their negative or positive ion potential when the multi-frequency voltage creates a polarizing electrical field of sufficient strength
Data Source
AI summary
Static neutralization of a charged object is provided by applying an alternating voltage having a complex waveform, hereinafter referred to as a “multi-frequency voltage”, to an ionizing electrode in an ionizing cell. When the multi-frequency voltage, measured between the ionizing electrode and a reference electrode available from the ionizing cell, equals or exceeds the corona onset voltage threshold of the ionizing cell, the multi-frequency voltage generates a mix of positively and negatively charged ions, sometimes collectively referred to as a “bipolar ion cloud”. The bipolar ion cloud oscillates between the ionizing electrode and the reference electrode. The multi-frequency voltage also redistributes these ions into separate regions according to their negative or positive ion potential when the multi-frequency voltage creates a polarizing electrical field of sufficient strength. The redistribution of these ions increases the effective range in which available ions may be displaced or directed towards a charged object.