Odor Filter Exchange Timing Using Air Quality Sensor Feedback
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Solution Overview
Problem
Existing methods for determining the exchange time of odor filters in extractor devices do not account for actual user-specific conditions, leading to unnecessary filter replacements or continued operation with saturated filters.
Innovation Solution
A procedure that uses sensor values, particularly from air quality sensors, to determine the exchange time based on actual odor load, saturation degree, and influencing variables like VOC levels, temperature, and moisture, with a system that includes an air quality sensor and processing unit to provide user-specific exchange recommendations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed exchange intervals are used for odor filters, then the system is simple to operate, but unnecessary replacements occur and filters may become saturated
Solution Approach 1:
The patent implements feedback by using air quality sensors to continuously monitor odor levels and automatically adjust filter exchange timing. The system receives feedback from sensor measurements of VOCs and other odor components, processes this information to determine actual filter saturation, and dynamically adjusts the exchange schedule accordingly, replacing filters based on actual need rather than fixed intervals
Solution Approach 2:
The patent applies dynamics by transitioning from static fixed exchange intervals to dynamic exchange scheduling. The system continuously adapts the filter exchange timing based on real-time cooking activity detection, odor load measurements, and filter saturation assessment, making the exchange schedule flexible and responsive to actual usage conditions
2Measurement precision
If sensor-based determination is implemented, then exchange time precision is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the air quality sensor system to serve multiple functions: monitoring cooking activities, measuring odor component levels, assessing filter saturation, and triggering exchange recommendations. This multi-functional approach consolidates what could be separate systems into a unified sensor-based platform, reducing overall system complexity while maintaining high measurement precision
Solution Approach 2:
The system implements self-service by automatically processing sensor data to determine filter exchange timing without requiring user intervention. The processor autonomously analyzes sensor readings, compares them against saturation thresholds, calculates optimal exchange times, and provides recommendations, eliminating the need for manual filter change scheduling and reducing operational complexity
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
This approach allows for precise determination of odor filter exchange times, preventing unnecessary replacements and ensuring the extractor device operates with unsaturated filters, thereby improving filter efficiency and user compliance with recommendations.
Implementation Method 1
In the air sealing sensor used according to the invention, the VOC substances are preferably monitored.
Implementation Method 2
Activated carbon filters are used as odor filters. By cleaning the air of odor substances, the air output from the extractor device can be returned to the room in which the extractor device is operated.
Data Source
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AI summary
The present invention relates to a method for determining the replacement time of an odor filter (13) of a range hood (1). The method is characterized in that the determination is carried out on the basis of sensor values from at least one air quality sensor. Furthermore, the invention relates to a system and a range hood for carrying out such a method.