Aerosol Cartridge Inlet Flow Guide for Protected Airflow Sensing
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Solution Overview
Problem
Existing aerosol-generating devices face challenges in accurately detecting air flow, efficiency of air-flow, and preventing leaking material and external contaminants from entering sensors.
Innovation Solution
The device incorporates a cartridge with an inlet, a housing, a base with a sensing hole, and a flow guide that projects upwards to surround the inlet, connected to a flow sensor, enhancing air flow detection accuracy and preventing contaminants from entering the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a flow sensor is directly exposed to the reception space to detect air flow, then the detection accuracy is improved, but leaking material and external contaminants can enter the sensor
Solution Approach 1:
The patent introduces a flow guide as an intermediary component between the reception space and the flow sensor. The flow guide has an inlet facing the reception space and an outlet connected to the flow sensor, allowing air flow detection while preventing direct exposure of the sensor to contaminants and leaking material in the reception space.
2Productivity
If the flow sensor is positioned to detect air flow efficiently, then the air-flow efficiency is improved, but the sensor becomes vulnerable to contamination
Solution Approach 1:
The flow guide serves as a mediator that maintains efficient air flow detection while protecting sensor reliability. It allows the sensor to be positioned optimally for detection efficiency while the guide structure filters out contaminants that would otherwise compromise sensor reliability.
3Reliability
If the sensor is protected from contaminants by enclosing it, then the sensor reliability is improved, but the air flow detection accuracy deteriorates
Solution Approach 1:
The flow guide enclosure protects the sensor from contaminants while maintaining detection accuracy through its specially designed inlet and outlet structure. The inlet allows air flow to reach the sensor, and the outlet connects to the sensor, ensuring that the protective enclosure does not compromise measurement precision.
4Measurement precision
If a flow guide structure is added to protect the sensor and improve detection, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The flow guide is designed to perform multiple functions simultaneously: it protects the flow sensor from contaminants, guides air flow to improve detection accuracy, and connects the reception space to the sensor. This multi-functionality reduces the need for separate components, thereby limiting the increase in device 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
Improves the accuracy of air flow detection and efficiency while preventing leaking material and external contaminants from entering the sensor, ensuring reliable operation.
Implementation Method 1
a flow sensor, which is disposed inside the housing, and is connected to the reception space through the sensing hole to detect air that flows toward the inlet from the base
Data Source
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AI summary
An aerosol-generating device is disclosed. The aerosol-generating device includes a cartridge having an inlet formed at a lower portion thereof; a housing, which has a reception space into which the cartridge is inserted; a base having a bottom surface and an inner circumferential surface, which surround a lower portion of the reception space, wherein the inner circumferential surface has a sensing hole; a flow sensor, which is disposed inside the housing, and is connected to the reception space through the sensing hole to detect air that flows toward the inlet from the base; and a flow guide, which projects upwards from the bottom surface of the base to surround the inlet, and is open toward the sensing hole.