Air decontamination device
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Solution Overview
Problem
Current air decontamination devices are inadequate in reducing microbial contamination in healthcare settings, particularly in Intensive Care Units (ICUs), due to inefficiencies in removing bacterial, fungal, and viral contaminants, and are often too expensive, bulky, and power-intensive, limiting their widespread installation in hospitals and other critical areas.
Innovation Solution
An air decontamination device utilizing a decontamination cassette with conducting plates that apply a static electric field between 2.7 kV/cm to 4.2 kV/cm to trap and kill microbial cells using a three-dimensional material with microbiocidal properties, enhancing the inherent antimicrobial activity of the surface moieties by aligning them with the electric field, thereby reducing microbial counts by over a billion-fold within 15-30 minutes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filtration or incineration methods are used to remove microbes from air, then microbial contamination is reduced, but the devices become expensive, bulky, and power-intensive
Solution Approach 1:
The patent replaces mechanical filtration systems and thermal incineration systems with an electrostatic field-based microbial inactivation system. Conducting plates generate electrostatic fields that penetrate microbial cell membranes, causing cell death through electrical disruption rather than physical filtration or thermal destruction. This substitution eliminates bulky filters, high-power heating elements, and complex mechanical components while achieving effective microbial control.
Solution Approach 2:
The patent changes the operational parameters from mechanical/thermal processes to electrostatic field parameters. By applying high voltage (creating electrostatic fields of 1-10 kV/cm) between conducting plates, the system achieves microbial inactivation through electrical parameters rather than mechanical pressure drops or thermal temperatures. This parameter change enables a more compact, energy-efficient device design.
2Reliability
If filtration systems are used to remove microbes, then microbial count is reduced, but pressure drop increases and airflow speed decreases
Solution Approach 1:
The patent replaces mechanical filtration that physically blocks air flow with an electrostatic field system that inactivates microbes in place. Conducting plates generate electrostatic fields throughout the air passage without requiring physical barriers. Microbes are inactivated by the electrostatic field as air flows freely through the system, maintaining high airflow speed while achieving effective microbial removal.
3Reliability
If high power consumption is used for UV lamps or heating elements in air purifiers, then microbial inactivation is enhanced, but energy efficiency deteriorates
Solution Approach 1:
The patent replaces high-power UV lamps and heating elements with an electrostatic field generation system. The conducting plates require electrical power to generate the electrostatic field, but the energy consumption is significantly lower than thermal incineration or UV sterilization systems. The electrostatic field directly disrupts microbial cell membranes, achieving effective inactivation with minimal energy input compared to heating large volumes of air to high temperatures or powering intense UV sources.
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 device achieves a significant reduction in microbial contamination with low power consumption and no pressure drop, making it suitable for installation in various healthcare and manufacturing settings, providing a more effective and efficient air decontamination compared to conventional systems.
Implementation Method 1
A static electric field that ranges from 2.7 KiloVolt/centimetre (kV/cm) to 4.2 kV/cm is applied between the conducting plates
Implementation Method 2
enhance the surface moieties dipole of the three dimensional material to complete realignment to a direction of the static electric field to potentiate the antimicrobial activity
Implementation Method 3
The three dimensional material is coated on the surface and its three dimensional structure with chemical moieties for imparting microbiocidal activity to both surfaces of the positively charged conducting plate and the negatively charged conducting plate
Data Source
AI summary
An air decontamination device (100) comprising: an input unit (102); an output unit (103); and a decontamination unit (104) coupled at a first end (122) to the input unit (102) and coupled at a second end (124) to the output unit (103). The decontamination unit (104) comprises: pairs of conducting plates (108), where one conducting plate of each pair is for being positively charged and the other conducting plate of each pair is for being negatively charged. The positively charged plate and negatively charged plate are separated to form an airflow path (212) and a 3D material (110) that is capable of being potentiated by static electric field is coupled to each side of conducting plate (108). When the static electric filed is applied, the surface moieties of the 3D material (110) are realigned to a direction of the static electric field to potentiate the antimicrobial activity of the 3D material (110) for destroying the microbes present in the received air.