Humidity-Sensed Vapour Flow Control for Stable Draw Resistance
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Solution Overview
Problem
Hand-held vapour generating devices face risks due to the use of non-genuine or unsuitable vapour-generating substances, leading to potential exposure to adverse components in the vapor, and variability in resistance to draw (RTD) for users.
Innovation Solution
A hand-held vapour generating device equipped with a humidity sensor to detect vapour properties, a gas sensor to measure adverse components, and an automatic flow control mechanism, which adjusts based on sensor data to prevent inappropriate vapour from being inhaled and regulate RTD, ensuring only genuine substances are used and providing a consistent user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a humidity sensor is used to detect vapour properties and control device operation, then user safety is improved by preventing inhalation of inappropriate vapour, but device complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The humidity sensor performs preliminary detection of vapour properties before the user inhales. The device controller evaluates the humidity measurement and proactively prevents inappropriate vapour from reaching the user by controlling the vaporization process, rather than reacting after contamination occurs.
Solution Approach 2:
The humidity sensor acts as an intermediary between the vaporization chamber and the user's inhalation path. It provides measurement data to the device controller, which then mediates the vapour flow by controlling the heating element or flow pathways to prevent harmful vapour from reaching the user.
2Measurement precision
If a gas sensor is used to measure adverse components in vapour, then detection precision of harmful substances is improved, but device complexity and cost increase
Solution Approach 1:
The gas sensor provides feedback information about adverse components in the vapour to the device controller. Based on this feedback, the controller adjusts the vaporization process in real-time to minimize the presence of harmful substances, creating a closed-loop control system that continuously optimizes vapour quality.
Solution Approach 2:
The patent replaces complex mechanical filtration systems with electronic sensing and control mechanisms. Instead of using physical filters or complex separation mechanisms to remove harmful substances, the system uses gas sensors to detect adverse components and electronically controls the vaporization parameters to prevent their formation.
3Ease of operation
If an automatic flow control mechanism is implemented to regulate vapour flow and RTD, then user experience consistency is improved, but device complexity increases due to additional control components
Solution Approach 1:
The flow control element is designed to be dynamically adjustable rather than fixed. It can change its position or opening degree in response to signals from the device controller based on humidity sensor data, allowing the system to adapt vapour flow characteristics to maintain consistent RTD and user experience under varying conditions.
Solution Approach 2:
The system changes flow parameters (such as flow rate, pressure, or temperature) dynamically based on sensor measurements. By adjusting these parameters in real-time according to humidity and gas sensor data, the device maintains consistent vapour delivery characteristics and RTD despite variations in substrate properties or environmental conditions.
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 effectively minimizes the inhalation of inappropriate vapour by blocking or diverting vapour outside acceptable humidity ranges and adjusts RTD to provide a consistent and safe user experience, enhancing the quality and safety of vapour produced.
Implementation Method 1
a humidity sensor for generating a measurement of a vapour produced by said substrate
Implementation Method 2
a gas sensor for measuring adverse/undesirable components in the produced vapour
Implementation Method 3
the heating mechanism causes a vapour to be generated
Implementation Method 4
heat, rather than burn, a substance to produce a vapour
Data Source
Figure 1
Figure 2a~3
Figure 4~5
AI summary
A vapour generating device comprises an oven arranged to receive a substrate to be vaporized, an inlet, an outlet, an airflow passageway for providing a fluid connection between the inlet and the outlet via the oven through which generated vapour can flow from the oven to the outlet. A device controller and a humidity sensor for generating a measurement of a vapor produced by the substrate are provided. The controller is operable to control the operation of the device based on measurement data from the humidity sensor.