E-Cigarette Atomizer Power Control for Consistent Vapor Output
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Solution Overview
Problem
Electronic cigarettes often fail to deliver a consistent quality of vapor due to varying nicotine concentrations and liquid compositions, which can lead to inadequate atomization and user dissatisfaction, and lack effective mechanisms for monitoring liquid levels and cartridge compatibility.
Innovation Solution
The implementation of control electronics and sensors in e-cigarettes that determine the required vaporization energy based on liquid characteristics, adjust atomizer power according to airflow, and monitor liquid levels, ensuring consistent vapor production and preventing device activation when the liquid is low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed power atomizer is used in e-cigarettes, then the device structure is simple, but the vapor quality is inconsistent due to varying liquid compositions and nicotine concentrations
Solution Approach 1:
The patent implements dynamic power adjustment for the atomizer based on real-time detection of liquid characteristics (nicotine concentration, viscosity, surface tension). The control system continuously adapts the heating power to match the specific liquid properties, transforming the static atomization process into a dynamic one that maintains consistent vapor quality across different e-liquid compositions.
Solution Approach 2:
The system changes multiple operating parameters simultaneously including heating power, airflow rate, and duty cycle based on detected liquid properties. By adjusting these parameters in combination rather than relying on fixed settings, the system achieves consistent atomization quality across varying liquid compositions while managing the complexity through integrated control.
2Ease of operation
If airflow-based activation is used, then user activation is convenient, but vapor production becomes inconsistent under varying puff conditions
Solution Approach 1:
The system incorporates sensors that detect airflow characteristics, liquid temperature, and atomizer resistance in real-time. This feedback is processed by the control system which continuously adjusts the power delivery to maintain consistent vapor production regardless of variations in puff strength, duration, or frequency, while preserving the convenient hands-free activation.
Solution Approach 2:
The control system implements periodic monitoring and adjustment cycles during each puff event. Rather than a single activation threshold, the system continuously samples airflow and liquid parameters at regular intervals, making incremental adjustments to maintain optimal atomization throughout the duration of the user's puff.
3Reliability
If no liquid level monitoring is implemented, then the device structure is simpler, but the atomizer may overheat and malfunction when liquid is depleted
Solution Approach 1:
The system performs preliminary detection of liquid level and liquid properties before activating the atomizer. By checking liquid availability and characteristics in advance, the system prevents malfunction conditions from developing, ensuring reliable operation while using relatively simple sensing mechanisms that detect liquid presence and basic properties.
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 solution ensures a uniform quality of puff by tailoring vaporization energy to the specific liquid in the e-cigarette, providing a consistent user experience and preventing device malfunction due to low liquid levels.
Implementation Method 1
a mass airflow sensor, which generates a signal that is read by a processor included on the power supply portion
Implementation Method 2
determine a total amount of vaporization energy required to vaporize an amount of liquid stored in a reservoir of an electronic cigarette
Implementation Method 3
an electrically operable atomizer. The atomizer vaporizes or atomizes liquid supplied from a reservoir
Implementation Method 4
The atomizer vaporizes or atomizes liquid supplied from a reservoir and provides vaporized or atomized liquid as an aerosol
Data Source
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AI summary
In accordance with one aspect of the present invention there is provided a non-transitory computer readable medium comprising computer executable instructions for controlling an atomizer (28) of an electronic cigarette (10), the instructions executable by a processor (106) to: determine a characteristic associated with the electronic cigarette based on data stored on a memory (112) of a reservoir portion (16, 104) of the e-cigarette; determine a flow rate of air provided to the atomizer, based on a signal received from a mass airflow sensor (26); and determine an amount of power to deliver to the atomizer, based on the characteristic and the flow rate of air. In accordance with one aspect of the present invention there is provided a method (120) for controlling an operation of an electronic cigarette. The method can include determining (122) a total amount of vaporization energy required to vaporize an amount of liquid stored in a reservoir (36) of an electronic cigarette. The method can include determining (124) a total amount of atomizer power that is delivered to an atomizer associated with the electronic cigarette over a period of time. The method can include determining (126) an amount of liquid remaining in the reservoir of the electronic cigarette, based on a comparison between the total amount of vaporization energy and the total amount of atomizer power delivered to the atomizer over the period of time.