Ultrasonic Atomization Assembly Vibration Loss Reduction
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Solution Overview
Problem
Existing ultrasonic atomization assemblies suffer from high invalid vibration loss, noise, and heat generation, with a low proportion of small-particle-size aerosol in the atomized output.
Innovation Solution
An ultrasonic atomization assembly is designed with a piezoelectric drive element, an atomizer plate, and a loading board, where the loading board is placed on the side surface of the atomizer plate away from the piezoelectric drive element, and the ratio of the aperture of the second through hole to the diameter of the microporous zone is optimized to reduce vibration loss and noise, while the microporous zone is positioned to enhance aerosol particle size distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a piezoelectric ceramic ring and microporous atomizer plate are used for ultrasonic atomization, then aerosol generation is achieved, but invalid vibration loss is large and working noise is high
Solution Approach 1:
The patent optimizes the thickness of the atomizer plate and the diameter of microporous zones as key parameters to change the vibration characteristics of the system, reducing invalid vibration modes and improving energy utilization efficiency
Solution Approach 2:
The patent introduces microporous zones with specific aperture ratios at critical locations on the atomizer plate to locally enhance vibration transmission efficiency and reduce energy loss in non-productive vibration modes
2Productivity
If high frequency micro-oscillation is generated to split the aerosol-generating substrate surface, then aerosol with vector property is formed, but heating problems occur
Solution Approach 1:
The patent optimizes the thickness of the atomizer plate and piezoelectric drive element to control the amplitude and frequency of micro-oscillation, thereby reducing excessive heat generation while maintaining effective atomization
Solution Approach 2:
The ultrasonic vibration operates at high frequency periodic cycles, creating controlled micro-oscillation that efficiently atomizes liquid while the periodic nature allows for heat dissipation between cycles, preventing excessive temperature rise
3Productivity
If the existing ultrasonic atomization assembly structure is used, then atomization function is achieved, but the proportion of small-particle-size aerosol is low
Solution Approach 1:
The patent creates microporous zones with specific aperture ratios (0.3-0.8mm) at defined locations on the atomizer plate, where the local pore structure controls the atomization process to generate higher proportion of fine aerosol particles
Solution Approach 2:
The atomizer plate is divided into multiple microporous zones with different characteristics, where each zone contributes to different aspects of aerosol generation, enabling optimized particle size distribution across the total output
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 solution effectively reduces invalid vibration and noise, increases the proportion of small-size particles in the aerosol, and minimizes temperature rise, improving the overall efficiency and performance of the ultrasonic atomization process.
Implementation Method 1
A main working principle is to use inverse piezoelectric effect of the piezoelectric ceramic ring to generate high frequency micro-oscillation
Data Source
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AI summary
The present disclosure provides an ultrasonic atomization assembly (20) and an ultrasonic atomization device. The ultrasonic atomization assembly (20) includes a piezoelectric drive element (21), an atomizer plate (22a/22b), and a loading board (23). The piezoelectric drive element (21) is provided with a first through hole (211); the atomizer plate (22a/22b) is stacked with the piezoelectric drive element (21), and the atomizer plate (22a/22b) is provided with a microporous zone (201) at a position corresponding to the first through hole (211); the loading board (23) is disposed on a side surface of the atomizer plate (22a/22b) which faces away from the piezoelectric drive element (21).The loading board (23) is provided with a second through hole (301) at a position corresponding to the microporous zone (201), and a ratio of an aperture of the second through hole (301) to a diameter of the microporous zone (201) is from 0.75 to1. 5.