Ultrasonic Bubble Volume Control via Resonance Frequency Tuning

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Solution Overview

Problem

Current techniques lack a precise method for adjusting the volume of bubbles in liquids by increasing or decreasing their size using ultrasonic waves, which is essential for various applications including medical and chemical processes.

Innovation Solution

A bubble volume control method and apparatus that utilizes an ultrasonic generator to emit a resonance frequency ultrasonic wave towards a bubble in a container, adjusting the liquid surface height to control the bubble's volume through resonance effects, defined by specific equations for resonance frequency and pressure wave transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If ultrasonic waves are emitted to control bubble volume, then bubble volume control capability is improved, but precision in adjusting bubble volume to desired size is insufficient

Engineering Contradiction:
Improvebubble volume control capabilityVSAvoidprecision in adjusting bubble volume
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent utilizes ultrasonic vibration to apply periodic pressure to the bubble, causing it to oscillate at its resonance frequency. This mechanical vibration approach enables precise control of bubble volume by tuning the ultrasonic frequency to match the bubble's natural resonance frequency, thereby achieving the desired precision in bubble volume adjustment.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The patent changes the frequency parameter of the ultrasonic wave to match the resonance frequency of the bubble. By adjusting the ultrasonic frequency parameter, the system achieves precise control over bubble volume, transforming the general capability into a precision control mechanism through parameter optimization.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If liquid surface height is adjusted to maximize resonance effect, then bubble volume adjustment function is improved, but device complexity increases

Engineering Contradiction:
Improvebubble volume adjustment functionVSAvoidliquid surface height adjustment mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces the liquid surface height dimension as a control parameter to optimize the resonance effect. By adjusting the height of the liquid surface relative to the ultrasonic source, the system creates standing waves that maximize pressure amplitude at the bubble location, thereby enhancing bubble volume control without requiring complex mechanical adjustment mechanisms.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent employs periodic ultrasonic waves at the resonance frequency to repeatedly compress and expand the bubble. This periodic action, combined with optimal liquid surface height positioning, maximizes the resonance effect and enables precise bubble volume control through rhythmic pressure application rather than continuous complex adjustments.

Inventive Principle:
Principle #19Periodic action

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

Effectively controls the volume of bubbles by applying controlled pressure, allowing for precise growth, contraction, or removal, enhancing the resonance effect and pressure application, thereby managing bubble behavior and liquid compression.

Implementation Method 1

emitting an ultrasonic wave having a resonance frequency corresponding to the size of the bubble located at the bottom of a container containing a liquid

Methodology Applied
Scientific EffectResonance: Resonance

Implementation Method 2

emitting an ultrasonic wave having a resonance frequency fN toward the bubble through an ultrasonic generator

Methodology Applied
Scientific EffectUltrasonic wave: Ultrasound

Data Source

PatentUS11406950B2Bubble volume control method and bubble volume controlling apparatus
Publication Date: 2022.08.09 SOGANG UNIV RES FOUND
  • US11406950B2 patent drawing
  • US11406950B2 patent drawing
  • US11406950B2 patent drawing

AI summary

Provided is a bubble volume control method and apparatus, and more particularly, to a bubble volume control method and apparatus for controlling the volume of a bubble by increasing or decreasing the volume of the bubble by emitting an ultrasonic wave having a resonance frequency corresponding to the size of the bubble located at the bottom of a container containing a liquid, such as water with bubbles composed of air, vapor, etc., toward the bubble by using an ultrasonic generator above the container, and maximizing a function of adjusting the volume of a bubble through a resonance effect by adjusting a liquid surface height of a liquid with the bubble according to a wavelength of an emitted ultrasonic wave.