Kitchen Fume Exhaust Layout With Cloud-Controlled Gas Detection

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Solution Overview

Problem

Current air quality monitoring systems are inadequate for detecting and mitigating indoor air pollution, particularly in kitchen areas, due to unstable gas flows and limited real-time detection capabilities.

Innovation Solution

An air pollution prevention system for kitchen units, featuring multiple negative pressure exhausting devices equipped with gas detectors and connected to a cloud computing server, which detects air pollution, issues control commands to exhaust devices, and filters pollutants before exhausting them outdoors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fixed gas-quality monitoring station is used, then the monitoring location is stable, but it cannot detect suspended particle concentration in the current environment due to unstable gas flow and variable wind direction

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

Solution Approach 1:

The patent transitions from a fixed monitoring station to a mobile monitoring device that can be moved to different locations. The mobile device includes a gas sensor, processor, and communication module, enabling real-time detection of suspended particles at various positions to adapt to changing environmental conditions and provide current location-specific air quality data

Inventive Principle:
Principle #15Dynamics

2Measurement precision

If general gas-quality monitoring stations are deployed, then air quality can be monitored at fixed points, but real-time detection and warning capabilities are insufficient due to unstable gas flow

Engineering Contradiction:
Improveair quality detection accuracyVSAvoidreal-time warning response time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The mobile monitoring device incorporates real-time detection and feedback mechanisms. The gas sensor continuously monitors suspended particle concentrations, the processor analyzes the data in real-time, and the system provides immediate warnings through the communication module when hazardous levels are detected, enabling timely response to air quality changes

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces traditional fixed mechanical monitoring infrastructure with a mobile electronic monitoring system. The mobile device uses electronic sensors, processors, and wireless communication to achieve real-time detection and warning capabilities, substituting the static mechanical monitoring station with a dynamic electronic system that can rapidly respond to environmental changes

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Loss of information

If indoor air quality is monitored without targeted pollution removal, then general air quality can be assessed, but indoor air pollution sources cannot be effectively controlled and removed

Engineering Contradiction:
Improveair quality information availabilityVSAvoidindoor air pollution from kitchen units
Core Design Contradiction:
Loss of informationVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and removes the harmful pollution source from the indoor environment. The system identifies kitchen units as specific pollution sources and uses exhaust devices to extract and remove contaminated air, separating the harmful pollutants from the indoor air supply to protect occupants

Inventive Principle:
Principle #2Taking out (Extraction)

4Productivity

If multiple negative pressure exhausting devices are deployed above and in front of the cooking device, then air pollution can be rapidly exhausted, but the system complexity increases with multiple gas detectors and cloud computing servers

Engineering Contradiction:
Improvepollution removal efficiencyVSAvoidsystem structure with multiple components
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the pollution control system into multiple functional components: gas detectors positioned above and in front of the cooking device, negative pressure exhausting devices, filter elements, and cloud computing servers. This segmentation allows each component to perform its specific function efficiently while enabling modular installation and maintenance

Inventive Principle:
Principle #1Segmentation

5Extent of automation

If cloud computing servers are used for intelligent computing and control command issuance, then pollution removal can be optimized, but the system requires real-time data transmission and processing infrastructure

Engineering Contradiction:
Improveintelligent control automationVSAvoiddata transmission and processing requirements
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent introduces a cloud computing server as an intermediary between the gas detectors and exhaust devices. The server receives real-time pollution data from detectors, performs intelligent analysis and computing, generates optimized control commands, and transmits them to the exhaust devices. This intermediary enables automated intelligent control while centralizing the complex data processing functions

Inventive Principle:
Principle #24Intermediary (Mediator)

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 removes air pollutants from kitchen areas, preventing cooks from inhaling fumes and preventing pollution from spreading to other rooms, while maintaining real-time monitoring and control.

Implementation Method 1

The at least one fan is controlled to generate a negative pressure for guiding the air pollution to flow into the respective exhausting channel

Methodology Applied
Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

pass through the at least one filter element for filtration and exhausting to an outdoor

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentEP4553389A1Air pollution prevention system for kitchen unit in indoor field
Publication Date: 2025.05.14 MICROJET TECH
  • EP4553389A1 patent drawingFigure 1
  • EP4553389A1 patent drawingFigure 2
  • EP4553389A1 patent drawingFigure 3

AI summary

An air pollution prevention system for a kitchen unit in an indoor field includes a cooking device (H), negative pressure exhausting devices (A), gas detectors (1) and a cloud computing server (2). The negative pressure exhausting devices (A) are disposed above and in front of the cooking device (H) and respectively connected to exhausting channels (B). Each of the negative pressure exhausting devices (A) includes a fan (A1) and a filter element (A2). The gas detectors (1) detect air pollution and output air pollution information. The cloud computing server (2) receives the air pollution information, calculates the concentration of air pollution, and issues the control command to the negative pressure exhausting devices (A) to enable the fans (A1), so as to guide the air pollution to flow into exhausting channels (B) and pass through the filter elements (A2) for exhausting to the outdoor, thereby achieving a gas state in the kitchen unit with a level of air pollution close to zero.