Electronic Cigarette Airflow Sensor Sensitivity via Dual Passageway Design
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Solution Overview
Problem
Existing electronic cigarettes have poor sensitivity due to the perpendicular orientation of the first airflow channel, which makes it difficult to form negative pressure around the airflow sensor, resulting in inconvenient usage.
Innovation Solution
The electronic cigarette design includes a first airflow passageway that extends from the air inlet to the airflow sensor, and a second airflow passageway that communicates with the aerosol passageway, allowing air to flow towards the airflow sensor and then reverse direction, increasing negative pressure around the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the first airflow channel is oriented perpendicular to the axial direction of the electronic cigarette, then the structure is simple, but the sensitivity is poor due to insufficient negative pressure formation around the airflow sensor
Solution Approach 1:
The airflow channel is divided into two distinct segments: a first airflow channel extending perpendicular to the axial direction and a second airflow channel extending along the axial direction. This segmentation allows each channel to serve its specific function - the first channel provides simple structural integration while the second channel ensures proper airflow direction for negative pressure formation around the airflow sensor, thereby improving sensitivity without overcomplicating the overall structure.
Solution Approach 2:
The airflow channel transitions from a two-dimensional perpendicular orientation to a three-dimensional configuration by adding the axial direction component. The second airflow channel extends along the axial direction, creating a three-dimensional airflow path that enables proper negative pressure formation around the airflow sensor while maintaining structural simplicity through efficient spatial arrangement.
2Ease of manufacture
If the first airflow channel is perpendicular to the axial direction, then manufacturing is easier, but negative pressure is not easily formed around the airflow sensor
Solution Approach 1:
The airflow channel is segmented into two functional parts: the first airflow channel perpendicular to the axial direction that is easy to manufacture and integrate, and the second airflow channel along the axial direction that ensures reliable negative pressure formation. This segmentation allows each segment to optimize for its specific requirement while maintaining overall ease of manufacture through modular construction.
Solution Approach 2:
The second airflow channel acts as an intermediary element that connects the first airflow channel to the airflow sensor. It mediates the airflow path, ensuring that negative pressure is properly formed around the airflow sensor by guiding air flow along the axial direction, thus bridging the gap between manufacturing simplicity and functional reliability.
3Measurement precision
If the airflow sensor is positioned to detect negative pressure, then sensitivity can be improved, but the perpendicular airflow channel orientation prevents effective negative pressure detection
Solution Approach 1:
The airflow detection system is segmented into two channels: the first airflow channel perpendicular to the axial direction that maintains ease of operation and structural simplicity, and the second airflow channel along the axial direction that ensures effective negative pressure detection. This segmentation allows the airflow sensor to detect negative pressure accurately while maintaining user convenience through straightforward operation.
Solution Approach 2:
The airflow detection capability is enhanced by adding the axial dimension to the airflow channel configuration. The second airflow channel extends along the axial direction, creating a three-dimensional airflow path that enables effective negative pressure detection around the airflow sensor while maintaining ease of operation through intuitive user interaction.
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 design enhances the sensitivity of the electronic cigarette by increasing negative pressure around the airflow sensor, making the device more convenient to use.
Implementation Method 1
When the user smokes, negative pressure is generated in the electronic cigarette. The airflow sensor receives information of the negative pressure
Implementation Method 2
The second airflow passageway is used to be spatially communicated with the first airflow passageway and the aerosol passageway, respectively, and is used to lead air from the first airflow passageway flowing toward the aerosol passageway along a reverse direction facing away from the airflow sensor
Implementation Method 3
An electronic cigarette is a product that adopts methods, such as atomization, etc., to atomize tobacco liquid containing nicotine, etc., into aerosols in order for inhaling of users
Implementation Method 4
Heating wires of the atomizing device is electrified to heat tobacco liquid for generating aerosols directly inhaled by the user
Data Source
AI summary
An electronic cigarette includes a device housing, and an atomizing device disposed in the device housing and an airflow sensor. An airflow path is formed between an air inlet and an aerosol passageway of the device housing so that air outside the electronic cigarette flows into the aerosol passageway through the airflow path. The airflow path includes a first airflow passageway and a second airflow passageway. The first airflow passageway extends along a direction from the air inlet toward the airflow sensor to be spatially communicated with the airflow sensor, and to lead the air outside the electronic cigarette flowing toward the airflow sensor. The second airflow passageway is used to be spatially communicated with the first airflow passageway and the aerosol passageway, respectively, and is used to lead air from the first airflow passageway flowing toward the aerosol passageway along a reverse direction facing away from the airflow sensor.