Air purification device
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Solution Overview
Problem
Existing air filtration systems are ineffective in removing ultrafine particles and gaseous pollutants like VOCs, and they often require continuous operation regardless of air quality, leading to reduced filter efficiency and increased energy consumption.
Innovation Solution
An air purification device that includes a first sensing device to monitor airflow components, a blower with adjustable output based on sensor readings, and a dual filtration system comprising a particle filter and a carbon filter, along with an ionization device to enhance pollutant removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous filtration operation is maintained, then air quality is consistently improved, but filter life is reduced and energy consumption increases
Solution Approach 1:
The system dynamically adjusts blower operation based on real-time sensor readings of air quality parameters. When pollutants are detected above thresholds, the blower activates to drive air through filters; when air quality is good, the blower reduces or stops operation. This dynamic on-demand operation extends filter life while maintaining air quality when needed.
Solution Approach 2:
The system uses sensors to continuously monitor air quality parameters (particulate matter, VOCs, CO2) and provides feedback to the control system. Based on this feedback, the system intelligently determines when filtration is needed and adjusts blower operation accordingly, avoiding unnecessary continuous operation that would waste energy and reduce filter life.
2Reliability
If continuous filtration operation is maintained, then air quality is consistently improved, but energy consumption increases
Solution Approach 1:
The blower operates dynamically based on real-time air quality conditions rather than continuously. Sensors monitor pollutants and trigger blower operation only when needed, significantly reducing energy consumption while maintaining air quality when pollutants are present.
Solution Approach 2:
The control system receives continuous feedback from sensors monitoring air quality parameters and adjusts blower operation in response. This feedback-driven control ensures the blower runs only when air quality deteriorates, eliminating wasteful energy consumption during periods of good air quality.
3Reliability
If activated carbon filter is used to remove VOCs, then gaseous pollutant removal is improved, but filter life is reduced due to continuous activation
Solution Approach 1:
The system dynamically activates the carbon filter only when VOC sensors detect gaseous pollutants above threshold levels. When VOCs are absent or below thresholds, the carbon filter remains inactive, extending its service life while ensuring VOC removal capability when actually needed.
Solution Approach 2:
VOC sensors provide continuous feedback on gaseous pollutant levels, triggering carbon filter operation only when VOCs are detected. This feedback-based selective activation prevents unnecessary consumption of the carbon filter's adsorption capacity, extending filter life while maintaining effective VOC removal when required.
4Adaptability or versatility
If multiple filtration devices are used to handle both particulate and gaseous pollutants, then filtration capability is improved, but device complexity increases
Solution Approach 1:
The system uses a single blower to perform multiple functions: driving air through particle filters for particulate removal, driving air through carbon filters for gaseous VOC removal, and supporting ionization devices. This multi-functional approach achieves comprehensive filtration capability while avoiding the complexity of multiple separate filtration systems.
Solution Approach 2:
The patent combines particle filtration, carbon filtration, and ionization capabilities into a single integrated air purification system controlled by one blower. Sensors monitor both particulate and gaseous pollutants, and the control system coordinates all filtration components through centralized control, reducing overall system complexity compared to separate independent systems.
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 both particulate and gaseous pollutants only when needed, extending the life of filters and reducing energy usage by dynamically adjusting airflow and filtration based on real-time air quality readings.
Implementation Method 1
a first sensing device for sensing at least one component in an airflow along an airflow pathway, wherein the first sensing device determines a sensor reading for the at least one component
Implementation Method 2
a blower, wherein the blower is adjustable to control an amount of air flowing through the airflow pathway
Implementation Method 3
For large particle sizes of greater than 0.5 μm, the dominant mechanism for particle removal from the airflow is physical collection, namely impaction and interception
Implementation Method 4
For large particle sizes of greater than 0.5 μm, the dominant mechanism for particle removal from the airflow is physical collection, namely impaction and interception
Implementation Method 5
Some conventional air filters can be electrostatically charged while they are manufactured, resulting in the air filter having a static charge that increases the initial MERV (or efficiency) rating
Implementation Method 6
Once such material or substance is activated carbon, utilized in the filter to absorb the VOCs within the airflow and passing through the filter
Data Source
AI summary
An air purification device is provided. An example air purification device includes a first sensing device for sensing at least one component in an airflow along an airflow pathway. The first sensing device determines a sensor reading for the at least one component. The example air purification device also includes at least one filtration device. The at least one filtration device is positioned along the airflow pathway. The example air purification device further includes a blower. The blower is adjustable to control an amount of air flowing through the airflow pathway. A blower output of the blower is adjusted based on the sensor reading.