Ozone-Containing Ultrafine Bubble Liquid Generation via Ultrasonic Cavitation
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Solution Overview
Problem
Existing methods for generating ozone-containing ultrafine bubble liquids result in bubbles larger than desired, causing them to rise and disappear over time, making it impossible to obtain a high-concentration UFB liquid that can be stored long-term.
Innovation Solution
A device comprising an ultrafine bubble generating unit that applies energy to a liquid and ejects it through a small-diameter port, followed by irradiation with ultraviolet rays to produce ozone-containing ultrafine bubbles with an average particle diameter of 200 nm or smaller, maintaining a narrow particle diameter distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If oxygen nano bubble water is generated by generating swirl flows in water and causing collision of the swirl flows, then oxygen nano bubbles are produced, but bubbles greater than the desirable particle diameter are included and rise and disappear over time
Solution Approach 1:
The invention changes the physical parameters of bubble generation by using ultrasonic vibration at specific frequencies (20 kHz or higher) and controlling the liquid ejection speed to exceed the sound speed, thereby generating ultrafine bubbles with diameters of 100 nm or less that maintain stability in the liquid phase
Solution Approach 2:
The invention replaces the conventional mechanical swirl flow collision method with an ultrasonic vibration-based generation method, where ultrasonic waves are applied to the liquid to generate cavitation and produce ultrafine bubbles through acoustic pressure variations rather than mechanical turbulence
2Reliability
If the particle diameter of UFBs is reduced to about 100 nm to suppress rising speed, then stability is improved, but existing methods cannot achieve uniform particle diameter distribution
Solution Approach 1:
The invention employs periodic ultrasonic vibration at frequencies of 20 kHz or higher to generate ultrafine bubbles through cyclic cavitation and collapse, which produces a uniform particle diameter distribution of 100 nm or less that remains stable in the liquid phase
Solution Approach 2:
The invention uses dynamic control of liquid ejection speed, maintaining it above the sound speed during ultrasonic vibration, to optimize the bubble generation process and achieve consistent ultrafine bubble production with narrow particle diameter distribution
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
Enables the generation of ozone-containing UFB liquids that can be stored at high concentrations over time by maintaining equilibrium between dissolved ozone in the liquid and ozone within the ultrafine bubbles.
Implementation Method 1
an ultrafine bubble generating unit that generates an ultrafine bubble liquid containing ultrafine bubbles by applying energy to a liquid and ejecting the liquid from an ejecting port having a small diameter
Implementation Method 2
a radiating unit that irradiates the ultrafine bubble liquid with ultraviolet ray
Data Source
AI summary
Provided are a device for generating an ozone-containing UFB liquid and a method for generating the ozone-containing UFB liquid, which enable the generation of the ozone-containing UFB liquid that can be stored long-term at a high concentration. To this end, an ultrafine bubble liquid containing ultrafine bubbles is generated by applying energy to a liquid and ejecting the liquid from an ejecting port having a small diameter, and the generated ultrafine bubble liquid is irradiated with ultraviolet ray.