Air Purifier Multi-Layer Filter Design for VOC and Particulate Removal
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Solution Overview
Problem
There is a need for an air purification device that can effectively filter and purify harmful gases, such as particulate matter (PM 2.5) and volatile organic compounds (VOCs), in activity spaces to improve air quality in real-time, addressing the growing concern of air quality affecting human health.
Innovation Solution
An air purification device comprising a device main body with a purification filter that includes stacked activated carbon and zeolite layers, and a gas detection module to detect air quality, enabling intelligent filtration and purification of air by guiding polluted air through the filter to produce a purified gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single type of filter material is used, then the device structure is simple, but the purification efficiency for different types of pollutants is insufficient
Solution Approach 1:
The filter is divided into multiple functional layers: a coarse filtration layer for large particles, an activated carbon layer for adsorbing volatile organic compounds, and a HEPA filtration layer for fine particulate matter. Each layer targets specific pollutants, allowing the system to maintain structural organization while achieving comprehensive purification efficiency.
Solution Approach 2:
The filter combines different materials with complementary properties: fibrous materials for particle capture, activated carbon for chemical adsorption, and specialized membranes for fine filtration. This composite structure enables simultaneous removal of various pollutant types without requiring separate devices.
2Productivity
If the filtration layer thickness is increased, then the purification effect is improved, but the air flow resistance increases
Solution Approach 1:
Instead of using one thick filtration layer, the system segments the filtration function across multiple thinner layers with different pore sizes and material properties. This allows gradual particle capture while maintaining adequate air flow channels, reducing overall flow resistance compared to a single dense thick layer.
Solution Approach 2:
Different regions of the filtration system have optimized local properties: the activated carbon layer provides high adsorption capacity for gases, while the HEPA layer provides high particle capture efficiency. Each layer's thickness and density are locally optimized for its specific function, achieving overall purification effectiveness without uniform excessive thickness that would increase resistance.
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 efficiently filters and purifies suspended particles and VOCs, improving air quality by generating a purified gas, which reduces the risk of breathing harmful gases in activity spaces, enhancing the efficiency of air purification in real-time.
Implementation Method 1
The activated carbon layer filters and absorbs suspended particles contained in an air introduced into the device main body through the gas-inlet opening
Implementation Method 2
the zeolite layer includes porous structures with hydrophobic property for controlling and absorbing volatile organic compounds contained in the air introduced into the device main body through the gas-inlet opening
Data Source
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AI summary
An air purification device includes a device main body (1), a purification filter (2) and a gas detection module (3). The device main body (1) includes a gas-inlet opening (1a) and a gas-outlet opening (1b). The purification filter (2) is disposed in the device main body (1) and includes at least one activated carbon layer (21a) and at least one zeolite layer (21b) stacked on each other, wherein the activated carbon layer (21a) filters and absorbs suspended particles contained in an air introduced through the gas-inlet opening (1a), and the zeolite layer (21b) includes porous structures with hydrophobic property for controlling and absorbing volatile organic compounds contained in the air introduced through the gas-inlet opening (1a), thereby a purified gas is generated from the air and is discharged through the gas-outlet opening (1b). The gas detection module (3) is disposed in the device main body (1) for detecting and obtaining a gas quality data of the air passing through the gas-inlet opening (1a) and outputting the gas quality data.