Electronic Cigarette Sensor Isolation via Inductive Chamber
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Solution Overview
Problem
Conventional electronic cigarettes face issues with sensor detection due to the heating member obstructing airflow and potential smoke liquid leakage, which can lead to sensor short-circuiting and reduced 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, allowing unobstructed suction detection and preventing smoke liquid from entering the sensor, thus extending the sensor's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is located in the airflow passage between the heating member and the air inlet, then the sensor can detect suction action, but the heating member obstructs the airflow and requires greater suction force
Solution Approach 1:
The patent divides the airflow path into two separate channels: one for the heating member and one for the sensor. The sensor is positioned in a dedicated airflow passage that does not intersect with the heating member's location, allowing independent airflow paths that eliminate mutual obstruction.
Solution Approach 2:
The patent introduces a airflow passage structure that acts as an intermediary between the air inlet and the sensor, routing air flow around the heating member to reach the sensor location without direct obstruction from the heating member.
2Power
If the heating member is located in the airflow passage, then heating can be performed, but smoke liquid may leak into the airflow passage and block the air inlet
Solution Approach 1:
The patent separates the heating function and sensing function into different spatial zones with independent airflow passages. The heating member is confined to its own passage while the sensor has access to a separate passage, preventing smoke liquid from the heating zone from contaminating the sensor zone.
Solution Approach 2:
The patent extracts the sensor from the heating member's environment by placing it in a separate airflow passage. This extraction removes the sensor from the harmful environment where smoke liquid leakage occurs, protecting it while maintaining the heating function in its original location.
3Measurement precision
If the sensor is exposed to the airflow passage with smoke liquid leakage, then detection can occur, but the sensor may short-circuit and service life is reduced
Solution Approach 1:
The patent extracts the sensor from the harmful environment of the heating member's airflow passage and places it in a separate, protected airflow passage. This extraction eliminates exposure to smoke liquid leakage, preventing short-circuiting and extending sensor service life while maintaining detection capability.
Solution Approach 2:
The patent introduces a separate airflow passage as an intermediary pathway for the sensor, isolating it from the smoke liquid-prone environment of the heating member's passage while still allowing the sensor to detect suction actions through the intermediary air flow.
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 sensor detection accuracy and reliability by eliminating airflow obstruction and reducing the risk of short-circuiting, thereby extending the device's operational lifespan.
Implementation Method 1
the suction of the user is hindered by the heating member, and thus a greater suction force is needed to allow the airflow in the airflow passage cause air pressure for the detection by the sensor
Implementation Method 2
the heating member is also located in the airflow passage
Data Source
AI summary
An electronic cigarette with a sensor assembly in an isolated and protected location includes a heating member and a cigarette holder having an air suction port opened to the air outside. The sensor assembly includes an inductive chamber. An open end of the inductive chamber is in air communication with the air suction port. The heating member is arranged outside of the inductive chamber. Inhalations on the electronic cigarette cause decrease of air pressure in the inductive chamber, the resulting reduced air pressure being sensed by the sensor assembly, which is located in the inductive chamber.