Bipolar Ionizer Circuit With External Imbalance Indication
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Solution Overview
Problem
Existing bipolar ion generators suffer from low efficiency due to the use of shields, which result in a significant portion of ion current being absorbed by the shield rather than escaping to reach the air, leading to inaccurate control of ion balance.
Innovation Solution
A circuit using two opposite polarity voltage multiplying circuits fed from a single high voltage AC generator, with capacitive coupling to ionizing electrodes, eliminates the need for a shield by automatically balancing positive and negative ions through capacitive coupling and an external imbalance indicator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a shield is positioned adjacent to the ionizing electrodes to control ion balance, then ion balance control is attempted, but ion generation efficiency deteriorates significantly as 90-95% of ion current is absorbed by the shield
Solution Approach 1:
The invention removes the shield component entirely from the ionizer system. Instead of using a shield to attempt ion balance control, the patent employs separate ionizing electrodes for positive and negative ions, each with independent high voltage control, allowing direct generation of balanced ion currents without the shield's harmful absorption effect
Solution Approach 2:
The invention changes the control parameter from shield voltage adjustment to independent high voltage control of separate positive and negative ionizing electrodes. By applying different high voltage levels to each electrode type, the system directly controls ion current balance at the source, achieving both efficiency and accuracy
2Reliability
If a shield is used to adjust ion balance, then some ion balance control is achieved, but measurement precision of external ion current balance deteriorates due to the shield absorbing most ion current
Solution Approach 1:
The shield is completely removed from the system. The invention replaces the shield-based control mechanism with separate ionizing electrodes that generate balanced ion currents directly, eliminating the distortion caused by shield absorption and enabling accurate measurement of external ion balance
Solution Approach 2:
The invention incorporates ion current sensors that continuously monitor the ion currents from each electrode type and provide feedback to the control system. This feedback mechanism allows real-time adjustment of high voltage levels to maintain precise ion balance, achieving both reliability and measurement precision
3Manufacturing precision
If a shield is positioned near the ionizing electrodes, then ion balance adjustment is possible, but device complexity increases due to the additional shield component and its control circuitry
Solution Approach 1:
The shield component and its associated control circuitry are completely removed from the system. The invention achieves ion balance control through a simpler architecture using separate ionizing electrodes with independent high voltage control, eliminating the complexity of shield positioning and voltage adjustment mechanisms
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 configuration enhances the efficiency of ion generation, allowing for accurate ion balance control and improved ion distribution in the air, with automatic correction of imbalances and increased ion output reaching the air.
Implementation Method 1
generating AC high voltage using a stationary AC generator
Implementation Method 2
applying the AC high voltage to one or more AC/DC voltage converters via capacitive air coupling between a high voltage terminal of the AC generator and one or more high voltage terminals of the AC/DC voltage converters
Implementation Method 3
each AC/DC voltage converter is connected to an air ionizing electrode that rotates with the AC/DC voltage converter it is connected to when that AC/DC voltage converter is rotated, relative to the AC generator, in an air flow
Data Source
AI summary
Bipolar ionizer circuit includes a high voltage AC voltage generator having a high potential output and a low potential output, the high potential output being capacitively coupled to respective high potential inputs of a pair of mutually opposite polarity voltage multipliers and the low potential output being capacitively coupled via an auxiliary capacitor to respective low potential inputs of the voltage multipliers. Outputs of the voltage multipliers are connected to respective ionizing electrodes, and an external ion imbalance indicator is connected in parallel to the auxiliary capacitor, which is thereby able to provide automatic balance of the ion current.