Electronic Cigarette With Pressure-Differential Child Lock
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Solution Overview
Problem
Existing electronic cigarettes lack a child lock function to prevent minors from using them.
Innovation Solution
An electronic cigarette with a pressure control module that locks or unlocks the heating device based on a pressure difference between chambers, using airflow sensors and capacitance value reading to detect user inhalation or exhalation patterns, and a controllable switch to control power supply to the heating device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is used to control the electronic cigarette based on negative pressure sensing, then the electronic cigarette can be activated or deactivated, but it cannot effectively prevent minors from using electronic cigarettes
Solution Approach 1:
The interior of the outer tube is divided into a first chamber and a second chamber by a partition layer, with each chamber having independent airway communication with the atmosphere. This segmentation allows the system to detect specific inhalation patterns (such as prolonged inhalation or multiple sequential inhalations) that are characteristic of minors, thereby enabling the child lock function through differentiated pressure sensing in separate chambers.
Solution Approach 2:
The pressure control module continuously monitors the pressure difference between the first chamber and the second chamber, and based on the detected pressure变化 patterns, it automatically locks or unlocks the heating device. This feedback mechanism enables the system to learn and respond to different user behaviors, effectively preventing minor usage without requiring complex manual configuration.
2Ease of operation
If the heating device is always accessible, then the electronic cigarette can be used conveniently, but minors can accidentally or intentionally use it
Solution Approach 1:
The accessibility of the heating device is made dynamic rather than static. The pressure control module continuously adjusts the locking state of the heating device based on real-time pressure difference measurements. During legitimate user inhalation, the pressure change triggers an unlock signal, allowing temporary access. However, if the inhalation pattern matches minor usage characteristics (such as prolonged or repeated inhalations), the system maintains or re-activates the lock, thus dynamically balancing accessibility with safety.
Solution Approach 2:
The pressure control module acts as an intermediary between the user's inhalation action and the heating device activation. Instead of directly connecting the inhalation detection to the heating element, the pressure control module analyzes the pressure difference patterns and mediates whether to unlock the heating device. This intermediary layer filters out minor usage attempts while allowing legitimate adult usage to pass through.
3Reliability
If the pressure control module locks the heating device based on preset pressure conditions, then minor usage is prevented, but the system requires complex pressure differential detection
Solution Approach 1:
By dividing the internal space into two separately ventilated chambers, the system can detect pressure differences that arise from specific inhalation behaviors. The partition layer with independent airways for each chamber allows the pressure sensor to measure differential pressure that reflects the user's inhalation pattern, making it easier to distinguish between adult and minor usage without requiring overly complex measurement systems.
Solution Approach 2:
The system uses pneumatic principles by utilizing air pressure changes in sealed chambers during inhalation. The first and second chambers communicate with the atmosphere through separate airways, creating a pneumatic system where the pressure difference naturally reflects the user's breathing pattern. This pneumatic approach simplifies the detection mechanism compared to direct flow sensing, as pressure differential measurement is inherently more robust and easier to implement reliably.
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
Effectively prevents minors from accidentally using the electronic cigarette by controlling the heating device's operation based on preset pressure conditions, ensuring safe usage.
Implementation Method 1
an airflow sensor, configured to detect the pressure difference between the first chamber and the second chamber and to generate a capacitance change value corresponding to the pressure difference
Implementation Method 2
a heating device, configured to heat
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present application relates to an electronic cigarette having child lock function, including: an outer tube; a partition layer connected to the inner wall of the outer tube, configured to divide the interior of the outer tube into a first chamber and a second chamber, the first chamber communicating with atmospheric pressure through a first airway and a third airway, and the second chamber communicating with atmospheric pressure through a second airway; a pressure control module, connected to the partition layer, configured to generate a working signal based on the pressure difference between the first chamber and the second chamber; a heating device, configured to heat; a pressure control module, connected to the heating device in the partition layer, configured to control the heating device based on the pressure difference between the first chamber and the second chamber, and to lock or unlock the heating device when the pressure difference meets a preset condition; a battery cell, connected to the heating device through the pressure control module and located within the outer tube, configured to provide power. The above electronic cigarette having child lock function can effectively prevent minors from accidentally ingesting the electronic cigarette.