Ultrasonic Oscillator Capacitance Tuning for Stable Aerosol Atomization
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Solution Overview
Problem
Aerosol generating devices using ultrasonic vibration face issues with varying atomization performance due to the properties of the ultrasonic oscillator, which can lose characteristics when heat exceeds the Curie temperature, affecting efficiency and user experience.
Innovation Solution
The device determines the capacitance value of the ultrasonic oscillator within a specific range (0.6 nF to 1.1 nF) to optimize its properties, using additives like cobalt, antimony, and niobium, and controls the oscillator's thickness and diameter to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ultrasonic oscillator operates at high power to improve atomization efficiency, then aerosol generation performance is improved, but heat generation increases causing loss of ultrasonic characteristics when exceeding Curie temperature
Solution Approach 1:
The patent optimizes the capacitance value of the ultrasonic oscillator within a specific range (0.6 nF to 1.1 nF) to balance power output and heat generation. This parameter adjustment allows the oscillator to maintain effective atomization performance while limiting temperature rise below the Curie temperature, thereby preserving ultrasonic characteristics and ensuring reliable operation.
2Ease of manufacture
If the capacitance value of the ultrasonic oscillator is not optimized, then manufacturing is easier, but atomization performance varies and efficiency is reduced
Solution Approach 1:
The patent establishes a specific capacitance value range (0.6 nF to 1.1 nF) for the ultrasonic oscillator that ensures optimal atomization performance. By defining this parameter range, the patent provides clear manufacturing specifications that balance ease of production with consistent, high-quality atomization output, eliminating performance variability.
3Productivity
If the ultrasonic oscillator generates high heat to improve atomization, then aerosol generation is enhanced, but material leakage and droplet emission increase
Solution Approach 1:
The patent optimizes the capacitance value to control heat generation at levels that enable effective aerosol generation without causing excessive temperature rise. This parameter optimization prevents the ultrasonic oscillator from generating harmful droplets and material leakage, maintaining a balance between productivity and operational safety.
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
The optimized ultrasonic oscillator generates aerosols at lower temperatures, improving user experience by preventing droplet emission and reducing material leakage, thus enhancing device reliability.
Implementation Method 1
an aerosol is generated by breaking the liquid into small pieces by the ultrasonic vibrations that vibrate at a frequency included in the alternating-current voltage
Implementation Method 2
the oscillator includes lead zirconate titanate (PZT)
Implementation Method 3
the viscosity of liquid in contact with the ultrasonic oscillator is decreased with heat generated from the ultrasonic oscillator
Implementation Method 4
the at least one value includes the additive, and the additive includes at least one of cobalt (Co), antimony (Sb), and niobium (Nb)
Data Source
AI summary
An aerosol generating device includes a storage configured to store an aerosol generating material, a liquid delivery element configured to absorb the aerosol generating material stored in the storage, and an atomizer configured to atomize the aerosol generating material absorbed by the liquid delivery element into an aerosol by generating ultrasonic vibrations, wherein the atomizer includes an oscillator, and the oscillator has a capacitance value of 0.6 nF to 1.1 nF.