Ultrasonic Atomizer Reflected Wave Avoidance
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Solution Overview
Problem
Conventional ultrasonic atomization apparatuses suffer from poor durability due to reflected ultrasonic waves being received by the ultrasonic vibrator, leading to potential failure and reduced lifespan.
Innovation Solution
The apparatus is designed with a separator cup having a spherical bottom surface and ultrasonic vibrators positioned to avoid receiving reflected waves, along with specific placement and inclination to ensure the reflected waves are not transmitted to the vibrators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separator cup is used to separate the ultrasonic vibrator and source solution in a double chamber method, then the ultrasonic vibrator is protected from erosion by the source solution, but reflected ultrasonic waves are generated at the separator cup bottom surface which may be received by the ultrasonic vibrator causing failure and reduced durability
Solution Approach 1:
The bottom surface of the separator cup is designed with a specific spherical curvature radius that satisfies the reflected wave avoidance condition. This curved geometry causes reflected ultrasonic waves to diverge and prevent them from being received by the ultrasonic vibrator, thereby eliminating the harmful effect while maintaining the protective separation function.
Solution Approach 2:
The invention introduces a geometric dimension (spherical curvature radius) as a new parameter to control wave propagation. By adjusting the curvature radius to satisfy the reflected wave avoidance condition, the system transforms a one-dimensional separation problem into a three-dimensional wave propagation control problem, preventing reflected wave reception through spatial geometry rather than material properties alone.
2Reliability
If the acoustic impedances of the ultrasonic wave conveyance solvent and separator cup materials are matched to eliminate reflected waves, then transmitted waves are entirely obtained, but it is practically extremely difficult to achieve complete acoustic impedance matching
Solution Approach 1:
Instead of attempting difficult acoustic impedance matching between materials, the invention uses geometric curvature of the separator cup bottom surface to control wave reflection. This approach replaces material property matching with geometric design, significantly easing manufacturing while achieving the same goal of maximizing transmission efficiency and eliminating reflected wave reception.
Solution Approach 2:
The invention changes the control parameter from material acoustic impedance (difficult to match) to geometric curvature radius (easy to design and manufacture). By transforming the problem from material selection to geometric design, the system achieves high transmission efficiency without the practical difficulties of precise acoustic impedance matching.
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 configuration effectively prevents negative influences such as failure caused by received reflected waves, thereby enhancing the durability of the ultrasonic atomization apparatus.
Implementation Method 1
an ultrasonic vibrator provided in a bottom surface of the water tank... ultrasonic waves that are oscillated from an ultrasonic vibrator... atomizes a source solution into fine mist by using an ultrasonic vibrator
Implementation Method 2
When ultrasonic waves from the ultrasonic vibrator provided in the bottom surface of the water tank enter (impinge on) the bottom surface of the separator cup through the ultrasonic wave conveyance solvent being an inert liquid, transmission waves and reflected waves are generated
Implementation Method 3
The separator cup and the at least one ultrasonic vibrator are provided to satisfy a reflected wave avoidance condition... the at least one bottom surface-reflected wave is not received by any of the at least one ultrasonic vibrator
Data Source
AI summary
In an ultrasonic atomization apparatus of the present invention, a separator cup and four ultrasonic vibrators are provided to satisfy a reflected wave avoidance condition that “four reflected waves are not received by any of the four ultrasonic vibrators”. Specifically, a set curvature of a bottom surface of the separator cup is set to be larger than a conventional set curvature. In addition, a distance from a center point of a bottom surface of the water tank of each of the four ultrasonic vibrators is set to be longer than a conventional distance.