Odor Sensor Pre-Chamber Flow Design for Uniform Gas Sensing
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Solution Overview
Problem
Existing odor measurement systems face issues with non-uniform distribution of odor measurement target gas and mixing with fresh air, leading to inaccurate measurements and sensitivity to temperature and humidity, which degrade the accuracy of odor sensors.
Innovation Solution
A device with a pre-chamber containing a gas flow chamber, vortex generation block, and gas distribution guide to uniformly distribute odor measurement target gas to an odor sensor, while preventing mixing with fresh air and adjusting temperature and humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If odor measurement target gas is supplied directly to the odor sensor, then the measurement process is simple, but the gas distribution is non-uniform and mixing with fresh air occurs leading to inaccurate measurements
Solution Approach 1:
The patent introduces a pre-chamber where the odor measurement target gas is preliminarily treated before reaching the sensor. The pre-chamber includes a gas distribution guide that uniformly distributes the gas and a vortex generation block that prevents mixing with fresh air, ensuring accurate measurement conditions are established before the gas contacts the sensor.
Solution Approach 2:
The pre-chamber acts as an intermediary component between the gas supply and the odor sensor. It mediates the gas flow by uniformly distributing it through the gas distribution guide and preventing contamination from fresh air, thereby protecting the measurement accuracy without requiring direct connection between the gas source and sensor.
2Temperature
If fresh air is supplied to the pre-chamber, then temperature and humidity conditions can be adjusted, but mixing with odor measurement target gas occurs degrading measurement accuracy
Solution Approach 1:
The pre-chamber is segmented into different functional zones: a first region where fresh air is supplied for temperature and humidity adjustment, and a second region where odor measurement target gas is supplied for measurement. The vortex generation block creates separate flow paths that prevent mixing between these two gas streams, allowing independent control of environmental conditions and measurement accuracy.
3Adaptability or versatility
If fresh air is supplied to the pre-chamber, then temperature and humidity can be adjusted, but mixing with odor measurement target gas degrades measurement accuracy
Solution Approach 1:
The pre-chamber is segmented into different functional zones: a first region where fresh air is supplied for temperature and humidity adjustment, and a second region where odor measurement target gas is supplied for measurement. The vortex generation block creates separate flow paths that prevent mixing between these two gas streams, allowing independent control of environmental conditions and measurement accuracy.
4Device complexity
If gas flows directly through the measurement chamber, then the device structure is simple, but gas distribution is non-uniform leading to measurement errors
Solution Approach 1:
The gas distribution guide is installed in the pre-chamber to preliminarily distribute the odor measurement target gas uniformly before it reaches the measurement region. This preliminary action ensures that when the gas contacts the odor sensor, it is evenly distributed, eliminating measurement errors caused by non-uniform distribution without requiring complex chamber structures.
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
Ensures accurate odor data by uniformly distributing and sensing the odor measurement target gas, minimizing contamination, and maintaining optimal temperature and humidity conditions, thereby enhancing measurement precision.
Implementation Method 1
having a vortex generation block, a gas distribution guide, and the like in the gas flow chamber, thereby being able to prevent mixing of the gas of an odor measurement target and fresh air that flow through the gas flow chamber
Implementation Method 2
having a gas distribution guide formed at a predetermined position on a bottom of the gas flow chamber to distribute the gas of the odor measurement target or the fresh air
Implementation Method 3
accurate measurement through an odor sensor and establishment of odor data must precede for analysis of the causes of various odors
Data Source
AI summary
A device for measuring odor has a pre-chamber having a gas flow chamber therein in which the gas of an odor measurement target or fresh air flows. The device additionally has a vortex generation block, a gas distribution guide, or the like in the gas flow chamber, thereby being able to prevent mixing of the gas of the odor measurement target and the fresh air that flow through the gas flow chamber. The device is able to prevent errors in measurement data that is measured by an odor sensor and provides the accuracy of odor data by enabling the gas of the odor measurement target to be uniformly mixed and distributed and then supplied to the odor sensor such that the gas can be sensed.