Sensor-Controlled Air Purifier for Fast, Low-Energy Filtration
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Solution Overview
Problem
Indoor air quality is challenging to control due to factors like poor air circulation, bacteria, fungi, and viruses, which affect human health, necessitating an effective air purification solution that can quickly detect and remove air pollutants.
Innovation Solution
An air purifier system with a main body, air guiding fan, filtering component, and networking controller that guides polluted air through a filtering component, detects air quality in real-time, and adjusts airflow to ensure complete purification within 5 minutes, using a clean air delivery rate of over 600 m³/h and integrating gas detection modules for intelligent control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the air guiding fan operates at high speed to quickly purify air, then the purification speed improves, but energy consumption increases
Solution Approach 1:
The air guiding fan operates dynamically with variable speeds rather than fixed high speed. The control system adjusts fan speed based on real-time air quality detection, using high speed only when pollution levels require rapid purification, and lower speeds during normal conditions, thus balancing purification effectiveness with energy efficiency
Solution Approach 2:
The system incorporates air quality sensors that continuously monitor indoor air conditions and provide feedback to the control system. This feedback loop enables the air guiding fan to operate only when and at the level necessary to address detected pollution, avoiding unnecessary high-speed operation and reducing overall energy consumption while maintaining effective purification capability
2Productivity
If the air guiding fan guides strong air convection to quickly remove pollutants, then the purification efficiency improves, but noise increases
Solution Approach 1:
The air guiding fan uses dynamic speed adjustment rather than continuous high-speed operation. During periods when air quality is acceptable, the fan operates at low or zero speed, minimizing noise. When pollution is detected, the fan increases speed to improve purification efficiency, thus balancing noise levels with purification performance based on actual air quality conditions
3Reliability
If the air purifier operates continuously to maintain air quality, then air purification effectiveness improves, but energy consumption increases
Solution Approach 1:
The air purifier operates periodically rather than continuously, based on air quality conditions. The system uses air quality sensors to detect pollution levels and activates the air guiding fan only when pollutants are detected or when air quality thresholds are exceeded. This periodic operation maintains effective air purification while significantly reducing energy consumption compared to continuous operation
Solution Approach 2:
The control system receives continuous feedback from air quality sensors and adjusts fan operation accordingly. When air quality is good, the system remains inactive or operates at minimal level. When pollution is detected, the system activates to restore air quality, then reduces or stops operation once targets are met, ensuring purification effectiveness while minimizing energy use through condition-based operation
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 system effectively detects and purifies indoor air pollutants in real-time, ensuring safe breathing conditions by quickly filtering and purifying air pollutants, including particulate matter, gases, and microorganisms, maintaining ambient air quality within safe limits.
Implementation Method 1
The air guiding fan is disposed in the airflow path, and operated to guide an air convection
Implementation Method 2
guide air pollution to pass through filtering component for filtering the air pollution
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An air purifier is disclosed and includes a main body (10), an air guiding fan (1), a filtering component (2), and a networking controller (F). The main body (10) is configured to form an airflow path (L). The air guiding fan (1) is disposed in the airflow path (L) and is operated to guide an air convection with a clean air delivery rate (CADR) over 600m3/h. The filtering component (2) is disposed in the airflow path (L) and filters an air pollution in the air convection guided by the air guiding fan (1). The networking controller (F) receives a control command through wireless communication to perform an activation operation of the air guiding fan (1).