Mountable gas exchange device

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Solution Overview

Problem

Existing air quality monitoring systems are unable to provide real-time detection of air pollution, especially suspended particles and other harmful gases, due to unstable gas flow and fixed monitoring stations, posing health risks and difficulty in maintaining indoor air quality.

Innovation Solution

A mountable gas exchange device equipped with a gas detector, air guiding fan, filter component, and driving controller, connected to a networked cloud computing service via IoT, allowing for intelligent air pollution detection and purification by introducing outdoor air through multiple filtration cycles and temperature adjustment, maintaining a positive pressure to prevent outdoor pollution from entering the indoor space.

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 gas flow becomes unstable due to variable wind direction and air volume, making real-time detection impossible

Engineering Contradiction:
Improvemonitoring location stabilityVSAvoidreal-time detection capability
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent transforms the fixed monitoring station into a movable, portable device that can be dynamically positioned and deployed. The gas quality monitoring device is designed to be mobile rather than fixed, allowing it to adapt to different locations and environmental conditions, thereby resolving the contradiction between location stability and real-time detection capability.

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If outdoor air is introduced for ventilation, then indoor air quality can be improved, but outdoor air pollution may enter the indoor field

Engineering Contradiction:
Improveindoor air freshnessVSAvoidoutdoor pollution intrusion
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by filtering outdoor air through multiple filtration stages (including HEPA filters and activated carbon filters) before it enters the indoor environment. This pre-processing of the air ensures that pollutants are removed in advance, allowing ventilation to occur without introducing harmful substances indoors.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces filtration systems as intermediary components between the outdoor air source and the indoor environment. These filters act as mediators that selectively allow clean air to pass while blocking pollutants, thus enabling air exchange without direct exposure to outdoor contamination.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If multiple filtration cycles are performed, then air purification effectiveness is improved, but energy consumption and operation time increase

Engineering Contradiction:
Improveair purification effectivenessVSAvoiddevice energy consumption
Core Design Contradiction:
Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent employs multiple filtration stages in sequence, where each filter handles specific types of pollutants. Rather than using one overly complex filter, the system uses a series of specialized filters (partial action on different pollutant types), achieving comprehensive purification while optimizing energy use by matching filter capacity to actual pollution levels.

Inventive Principle:
Principle #16Partial or excessive action

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 complete indoor air purification, maintaining zero CO2 difference between indoor and outdoor environments, effectively filtering PM2.5 and other pollutants, while optimizing energy efficiency and noise levels.

Implementation Method 1

at least one gas detector is arranged in an indoor field for detecting air pollution information and temperature-humidity information of gas

Methodology Applied
Scientific EffectGas diffusion: Diffusion

Implementation Method 2

at least one air guiding fan...so that air in the outdoor field is introduced and filtered through the at least one filter component under the filter duct into the indoor field

Methodology Applied
Scientific EffectPressure gradient-driven flow: Pressure Gradient

Implementation Method 3

at least one filter component...perform the clean room treatment to purify the PM2.5 and other air pollution in the indoor field completely

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Implementation Method 4

at least one filter component...achieve complete indoor air purification

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 5

The at least one gas detector receives a control instruction and transmits it to the driving controller through an Internet of Things communication

Methodology Applied
Scientific EffectIoT wireless communication:

Data Source

PatentEP4682436A1Mountable gas exchange device
Publication Date: 2026.01.21 MICROJET TECH
  • EP4682436A1 patent drawingFigure 1A
  • EP4682436A1 patent drawingFigure 1B
  • EP4682436A1 patent drawingFigure 2

AI summary

A mountable gas exchange device used in an indoor air cleaning network mechanism is provided and includes a detector (1) and a gas exchange main part (2). The gas exchange 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) has a gas introducing entrance (24a), a gas exchange fan (25) is arranged at the gas circulation entrance (24a). The gas detector (1) controls the actuation operation of the air guiding fan (21) and the gas exchange fan (25) through the Internet of Things communication. Consequently, air in the outdoor field (B) is introduced into the indoor field (A) through the filter duct (24c), and air in the indoor field (A) enters the filter duct (24c) through the circulating return air port (24b) for multiple cycles of filtration to air pollution purification.