Mountable fan filter assembly

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Solution Overview

Problem

Existing air quality monitoring systems are inadequate for detecting and controlling indoor air pollution due to unstable gas flow and fixed location of monitoring stations, posing health risks from suspended particles and pollutants, and there is a need for real-time, intelligent air purification systems to meet clean room standards.

Innovation Solution

A mountable fan filter assembly with integrated gas detectors, air guiding fans, filter components, and a flow guiding pathway, connected to a networked cloud computing service via IoT, enabling real-time air pollution detection and purification through multiple cycles of filtration and ventilation, with intelligent fan control for energy-efficient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fixed gas-quality monitoring station is used, then the monitoring location is stable, but the system cannot detect real-time air quality in different environments due to unstable gas flow and variable wind direction

Engineering Contradiction:
Improvemonitoring location stabilityVSAvoidreal-time detection capability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent transitions from a fixed monitoring station to a mobile detection device that can be dynamically positioned and moved to different locations. The device incorporates movable wheels and a flexible mounting structure, enabling it to adapt to various environments and provide real-time air quality detection across multiple spatial locations, thus resolving the contradiction between location stability and real-time detection capability.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If traditional air purification systems are used, then air filtration is provided, but the systems cannot intelligently adjust operation based on real-time air quality detection

Engineering Contradiction:
Improveair filtration capabilityVSAvoidintelligent control capability
Core Design Contradiction:
Ease of manufactureVSExtent of automation

Solution Approach 1:

The patent implements a closed-loop feedback system where gas sensors continuously detect air quality parameters (PM2.5, CO, CO2, VOCs), and the detection data is transmitted to a control module that automatically adjusts the purification device operation. The system compares real-time detection results with preset standards and dynamically controls fan speed and purification intensity, achieving intelligent automation that resolves the contradiction between filtration capability and intelligent control.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If multiple gas sensors are integrated for comprehensive detection, then detection accuracy improves, but device complexity and energy consumption increase

Engineering Contradiction:
Improveair quality detection accuracyVSAvoidsystem structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent integrates multiple gas sensors (PM2.5 sensor, CO sensor, CO2 sensor, VOC sensor) into a single unified detection module that simultaneously monitors various air quality parameters. The control module processes data from all sensors and coordinates a single purification device to handle all detected pollutants. This multi-functional integration achieves comprehensive detection accuracy while avoiding the complexity of separate independent systems for each pollutant type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Achieves real-time air purification and clean room treatment by filtering and purifying indoor air, preventing backflow, and optimizing energy consumption based on ambient air quality, ensuring safe and balanced environmental protection.

Implementation Method 1

air pollution is filtered and purified through the at least one filter component under the filter duct

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Implementation Method 2

air in the indoor field is introduced through the circulating return air port and passed the flow guiding pathway into the filter duct

Methodology Applied
Scientific EffectMechanical air movement: Fan

Data Source

PatentEP4682434A1Mountable fan filter assembly
Publication Date: 2026.01.21 MICROJET TECH
  • EP4682434A1 patent drawingFigure 1A
  • EP4682434A1 patent drawingFigure 1B
  • EP4682434A1 patent drawingFigure 2

AI summary

A mountable fan filter assembly used in an indoor air cleaning network mechanism is provided and includes a detector (1) and a unit main part (2). The unit main part (2) is built-in and suspended in the indoor field (A) and comprises an air guiding fan (21), a filter component (22), a driving controller (23) and a flow guiding pathway (24). The flow guiding pathway (24) is horizontally parallel to and separated from the filter duct (24b), and the air guiding fan (21) and the filter component (22) are arranged under the filter duct (24b). The gas detector (1) controls the actuation operation of the air guiding fan (21) through the Internet of Things communication. Consequently, air in the indoor field (A) is introduced into the filter duct through the circulating return air port (24a), and air pollution is filtered and purified for multiple cycles to implement circulation filtration and purification treatment in real time and prevent the backflow of the filtered gas.