Feedback-Controlled Air Ionizer for Distributed Cabin Air Purification
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Solution Overview
Problem
Existing air filtration systems in aircraft, such as HEPA filters, are ineffective in continuously maintaining air quality due to their centralized placement and do not address odor removal, leading to potential circulation of harmful pathogens and odors within enclosed spaces.
Innovation Solution
A smart air ionizer system with a power circuit, high voltage circuit, and a controller that adjusts voltage output based on feedback to generate ions for pathogen and odor neutralization, integrated into passenger service units and air vents to ensure continuous air quality improvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HEPA filters are used to filter air during recirculation, then air filtration effectiveness is improved, but cost and energy consumption increase
Solution Approach 1:
The patent replaces the mechanical filtration system (HEPA filters requiring airflow forcing) with an electrostatic ionization system. The ionizer generates positive and negative ions that attach to particles, causing them to settle or be captured without requiring high-energy airflow forcing through dense filter media.
Solution Approach 2:
The system changes the physical-chemical parameters of air treatment from mechanical filtration to electrostatic ionization. By introducing ions and changing the electrical charge state of particles, the system achieves filtration and odor neutralization through electrostatic mechanisms rather than mechanical barrier methods.
2Reliability
If HEPA filters are placed at central locations, then air filtration is provided, but continuous effectiveness throughout the enclosed space is not achieved
Solution Approach 1:
The patent divides the air treatment function into multiple distributed ionizer units that can be placed throughout the aircraft cabin rather than relying on a single central filtration system. Each ionizer independently treats air in its local zone, collectively providing comprehensive coverage throughout the enclosed space.
Solution Approach 2:
The system transitions from centralized three-dimensional air handling to distributed multi-point ionization sources throughout the space. This dimensional distribution of treatment points ensures that no area is too far from an ionization source, improving uniformity of effectiveness across the entire cabin volume.
3Object-affected harmful factors
If air filters are used, then particulate matter is removed, but odors are not removed from the air
Solution Approach 1:
The ionizer system performs multiple functions simultaneously: it removes particulate matter through ion attachment and settling, neutralizes odors through oxidation and ion breakdown, and sanitizes surfaces. This multi-functional capability replaces the need for separate filtration and odor control systems.
Solution Approach 2:
The ionizer generates highly reactive oxygen species and ozone that act as strong oxidants, breaking down odor-causing molecules and organic contaminants. This chemical oxidation mechanism effectively eliminates odors that cannot be removed by physical filtration alone.
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 smart air ionizer effectively neutralizes pathogens and odors by generating ions, enhancing air quality in aircraft cabins and lavatories, and can be used alongside HEPA filters to achieve higher efficiency ratings than standalone HEPA filters.
Implementation Method 1
an electrode exposed to an airflow to ionize the air in the airflow
Implementation Method 2
a high voltage circuit, an electrode coupled to the high voltage circuit
Data Source
AI summary
A smart air ionizer is disclosed herein. The smart air ionizer includes a power circuit, a high voltage circuit, an electrode coupled to the high voltage circuit, the electrode configured to ionize air surrounding the electrode, and a controller circuit coupled to the power circuit and the high voltage circuit, the controller circuit including a controller configured to control a voltage output of the high voltage circuit to the electrode based on a feedback received from the high voltage circuit.