Inductive Atomizer Power Control for Dry-Burn Detection
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Solution Overview
Problem
Existing electronic atomization devices lack effective methods to monitor and address adverse conditions such as insufficient liquid supply, overheating, or improper coupling, which can affect user experience and safety.
Innovation Solution
Incorporating a magnetic field generating circuit and a susceptor that generates heat upon induction, with a controller to monitor electrical characteristics of the circuit to detect adverse conditions, such as changes in resonance voltage or current, allowing for precise control of power supply to the susceptor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heating element is used to heat the liquid substrate, then the liquid can be vaporized to generate aerosols, but the device lacks effective monitoring of adverse conditions such as insufficient liquid supply or overheating
Solution Approach 1:
The patent implements feedback by monitoring the electrical characteristic parameters (voltage, current, impedance) of the magnetic field generating circuit and using this information to detect adverse conditions in the susceptor. The controller continuously receives feedback from the circuit parameters and adjusts power supply accordingly to prevent dry burning and overheating
Solution Approach 2:
The patent replaces traditional mechanical or contact-based temperature sensing methods with electromagnetic field-based detection. By monitoring electrical characteristic parameters of the magnetic field generating circuit, the system can infer the state of the susceptor and liquid supply without direct physical contact or additional mechanical sensors
2Productivity
If the heating power is increased to improve aerosol generation efficiency, then more aerosols are produced, but the risk of overheating and dry burning increases
Solution Approach 1:
The controller monitors electrical characteristic parameters in real-time and uses this feedback to dynamically adjust the power supplied to the magnetic field generating circuit. When adverse conditions are detected (such as changes indicating dry burning or overheating), the controller reduces or stops power supply to prevent harmful effects while maintaining efficient aerosol generation during normal operation
Solution Approach 2:
The patent employs dynamic power adjustment rather than fixed heating power. The power supply to the susceptor is continuously adapted based on the monitored electrical characteristic parameters, allowing the system to operate at high power for efficient aerosol generation when conditions are favorable, and automatically reduce power when adverse conditions arise
3Measurement precision
If traditional resistance monitoring of the heating element is used, then operating temperature can be obtained, but the method cannot effectively detect adverse conditions in inductive heating systems
Solution Approach 1:
The patent replaces resistance-based temperature monitoring with electromagnetic parameter monitoring. By measuring electrical characteristic parameters (voltage, current, impedance) of the magnetic field generating circuit, the system achieves accurate detection of susceptor state and liquid supply conditions specifically tailored for inductive heating applications where resistance monitoring is ineffective
Solution Approach 2:
The patent changes the measurement parameter from electrical resistance (used in conventional heating) to electrical characteristic parameters of the magnetic field generating circuit (voltage, current, impedance). This parameter change enables effective monitoring in inductive heating systems where the heating mechanism and failure modes differ from traditional resistive heating
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
Enhances user experience by preventing dry burning, detecting liquid depletion, and ensuring safe operation by accurately monitoring and responding to adverse conditions.
Implementation Method 1
a magnetic field generating circuit, electrically connected to the power supply, and configured to generate a varying magnetic field; and a susceptor, configured to be penetrated by the varying magnetic field to generate heat
Implementation Method 2
a susceptor, configured to be penetrated by the varying magnetic field to generate heat, to heat the liquid substrate to generate aerosols
Data Source
AI summary
A power supply assembly, an electronic atomization device, and a control method thereof are provided. The electronic atomization device includes: a liquid storage cavity for storing a liquid substrate; a power supply for supplying electricity; a magnetic field generating circuit electrically connected to the power supply for generating a varying magnetic field; a susceptor to be penetrated by the varying magnetic field to generate heat. to heat the liquid substrate to generate aerosols; and a controller electrically connected to the magnetic field generating circuit, for monitoring an electrical characteristic parameter of the magnetic field generating circuit and determine, based on the electrical characteristic parameter of the magnetic field generating circuit, whether adverse conditions exist in the susceptor.