Electronic Cigarette Sensor Isolation via Inductive Chamber
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Solution Overview
Problem
Conventional electronic cigarettes face issues with sensor detection due to obstruction by the heating member and potential short-circuiting from leaked smoke liquid, which affects airflow and sensor service life.
Innovation Solution
The electronic cigarette design isolates the sensor from the heating member by placing it in an inductive chamber outside the airflow passage, using a splitter plate and shutoff piece to create separate air paths, and employing a flexible material for the airflow passage to sense suction without direct exposure to smoke liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is arranged in the airflow passage to detect suction action, then the detection function is achieved, but the heating member obstructs the suction and requires greater suction force
Solution Approach 1:
The sensor is extracted from the airflow passage and placed in a separate detection chamber. The airflow passage and detection chamber are isolated from each other, allowing the sensor to detect pressure changes without being obstructed by the heating member. This resolves the contradiction by separating the detection function from the airflow path.
2Measurement precision
If the sensor is located between the heating member and the air inlet for detection, then the detection function is achieved, but leaked smoke liquid may block the air inlet and affect sensor detection
Solution Approach 1:
The sensor is extracted from the airflow passage and placed in an isolated detection chamber. The air inlet and airflow passage remain separate from the detection chamber, preventing leaked smoke liquid from reaching and blocking the air inlet or entering the sensor. This ensures reliable sensor detection independent of liquid leakage issues.
3Measurement precision
If the sensor is placed in the airflow passage for detection, then the detection function is achieved, but leaked smoke liquid may enter the sensor and cause short-circuit
Solution Approach 1:
The sensor is extracted from the airflow passage and positioned in a separate detection chamber that is isolated from the liquid communication path. The heating member remains in liquid communication with the smoke liquid storage member, but the sensor is positioned outside this liquid pathway, preventing leaked smoke liquid from entering the sensor and causing short-circuits.
4Measurement precision
If the sensor operates in the airflow passage environment, then the detection function is achieved, but residual smoke causes humid environment that reduces sensor service life
Solution Approach 1:
The sensor is extracted from the humid airflow passage environment and placed in a separate detection chamber. This isolation prevents residual smoke and moisture from the airflow passage from affecting the sensor, thereby extending the sensor's service life while maintaining its detection functionality.
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 configuration allows unobstructed suction detection, reduces the risk of sensor short-circuiting, and extends the sensor's service life by maintaining a dry environment within the inductive chamber.
Implementation Method 1
The sensor assembly includes an inductive chamber and a sensor arranged in the inductive chamber... The open end of the inductive chamber is in air communication with the air suction port
Implementation Method 2
A passage wall of the airflow passage is at least partially made of a flexible material, to form an elastic portion. The sensor is arranged on the elastic portion and located outside of the airflow passage
Data Source
AI summary
An electronic cigarette includes a heating member; a sensor assembly includes an inductive chamber; a sensor arranged in the inductive chamber; and an airflow passage isolated from the sensor; wherein the heating member is arranged in the airflow passage.