Micro-Pulsed Ionizer Blower Balancing Control
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Solution Overview
Problem
Existing ionizing blowers face challenges in achieving efficient air ionization with short discharge times and maintaining tight ion balance control, particularly in wide area coverage applications.
Innovation Solution
The method involves an air moving device with an ion emitter and reference electrode connected to a micro-pulsed AC power source, coupled with an ion balance monitor and corona discharge adjustment control, generating variable polarity groups of short duration ionizing micro-pulses that are predominantly asymmetric in amplitude and duration, ensuring balanced ionization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous corona discharge is used to generate air ions, then ion current increases and discharge time decreases, but ion balance control becomes difficult to maintain
Solution Approach 1:
The patent applies periodic pulsed corona discharge instead of continuous discharge. The system generates bursts of ions at regular intervals, allowing the ion balance to reset between pulses. This periodic action enables high ion current during discharge while maintaining balance control through the off-periods, directly resolving the contradiction between productivity and measurement precision.
Solution Approach 2:
The patent implements dynamic control of the corona discharge parameters including pulse width, frequency, and amplitude. By dynamically adjusting these parameters based on real-time ion balance feedback, the system can optimize ion current output while maintaining precise balance control, resolving the contradiction between high productivity and measurement precision.
2Loss of time
If high voltage is applied to generate sufficient ion current, then discharge time decreases, but ion balance becomes unstable
Solution Approach 1:
The pulsed high voltage application allows sufficient ion current to be generated during each pulse for fast discharge, while the periodic nature provides stability through consistent repetition. The system achieves short discharge times within each pulse while maintaining overall balance stability through the periodic pattern, resolving the contradiction between loss of time and stability.
Solution Approach 2:
The patent employs feedback control where ion balance is monitored and the high voltage pulse parameters are adjusted accordingly. This feedback mechanism ensures that even with high voltage application, the ion balance remains stable by making real-time corrections, directly addressing the contradiction between discharge time and stability.
3Measurement precision
If symmetric bipolar corona discharge is used, then ion balance is maintained, but discharge efficiency and coverage area are limited
Solution Approach 1:
The patent intentionally introduces asymmetry in the bipolar corona discharge by varying pulse width, amplitude, or frequency between positive and negative cycles. This asymmetric design allows one polarity to dominate during specific phases, increasing discharge efficiency and coverage area while the overall periodic pattern maintains ion balance, resolving the contradiction between measurement precision and productivity.
Solution Approach 2:
The system dynamically adjusts the symmetry of the bipolar discharge based on operational requirements. By making the discharge parameters variable rather than fixed, the system can optimize for efficiency when needed while maintaining balance control, resolving the contradiction between ion balance and discharge efficiency.
4Measurement precision
If micro-pulsed AC power source with asymmetric pulses is used, then ion balance control precision improves, but device complexity increases
Solution Approach 1:
The patent achieves precise ion balance control by varying parameters of the AC power source (pulse width, frequency, amplitude) rather than changing the fundamental device architecture. This parameter-based control allows sophisticated ion balance management with relatively simple device modifications, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The micro-pulsed AC power source incorporates dynamic control capabilities that allow real-time adjustment of pulse characteristics. This dynamic control enables precise ion balance management while the modular design keeps the overall device complexity manageable, addressing the contradiction between measurement precision and device complexity.
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 enables automatic balancing of the ionized air stream, achieving efficient air ionization with short discharge times and precise ion balance control, effectively addressing the limitations of existing technologies.
Implementation Method 1
generating variable polarity groups of short duration ionizing micro-pulses wherein said micro-pulses are predominantly asymmetric in amplitude and duration of both polarity voltages and have a magnitude of at least one polarity ionizing pulses exceed the corona threshold
Implementation Method 2
Monitoring or controlling the performance of a blower utilizes two measurements. The first measurement is balance. Ideal balance occurs when the number of positive air ions equals the number of negative air ions. On a charge plate monitor, the ideal reading is zero.
Data Source
AI summary
In one embodiment of the invention, a method of automatically balancing ionized air stream created in bipolar corona discharge is provided. The method comprises: providing an air moving device with at least one ion emitter and reference electrode connected to a micro-pulsed AC power source, and a control system with at least one ion balance monitor and corona discharge adjustment control; generating variable polarity groups of short duration ionizing micro-pulses: wherein said micro-pulses are predominantly asymmetric in amplitude and duration of both polarity voltages and have a magnitude of at least one polarity ionizing pulses exceed the corona threshold.