Fine Bubble Generator with Opposing Swirling Vanes
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Solution Overview
Problem
Existing fine bubble generators often produce insufficient volumes of fine bubbles due to limitations in their design, particularly in the generation and refinement mechanisms within the fine bubble generation portions.
Innovation Solution
The fine bubble generator incorporates a dual fine bubble generation system with a first portion featuring diameter-reducing and increasing flow paths, and a second portion with swirling flow generation sections, including vanes that enhance turbulent flow by generating swirling flows in opposite directions, increasing the collision and refinement of bubbles into finer volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fine bubble generation portion with diameter-reducing and diameter-increasing flow paths is used, then the structure is simple, but the volume of fine bubbles generated is insufficient
Solution Approach 1:
The fine bubble generation device is divided into multiple independent fine bubble generation portions (first, second, third, and fourth portions), each capable of generating fine bubbles through diameter-reducing and diameter-increasing flow paths. This segmentation allows each portion to contribute to the overall fine bubble volume, resolving the contradiction between structural simplicity and sufficient fine bubble generation by creating a modular multi-component system.
2Quantity of substance
If swirling flow generation portions with vanes are added to enhance turbulent flow and bubble collision, then fine bubble volume increases, but the device complexity increases
Solution Approach 1:
The swirling flow generation portions are integrated within the fine bubble generation portions, merging the bubble generation function with the turbulent flow enhancement function into unified structures. The vanes are positioned within the flow paths of the fine bubble generation portions, allowing both functions to be achieved without adding separate independent systems, thus resolving the contradiction between enhanced fine bubble volume and device complexity.
3Quantity of substance
If multiple fine bubble generation portions are arranged in series, then fine bubble volume increases, but the flow path length and pressure loss increase
Solution Approach 1:
The multiple fine bubble generation portions are arranged in a radially extended configuration rather than a simple linear series arrangement. The portions are positioned at different radial positions around a central axis, allowing the flow to progress through multiple generation portions while maintaining a compact overall footprint. This dimensional arrangement increases fine bubble volume without proportionally increasing the linear flow path length, resolving the contradiction between fine bubble volume and flow path length.
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 significantly increases the volume of fine bubbles generated by enhancing turbulent flow and collision within the system, leading to more efficient bubble refinement and larger bubble production.
Implementation Method 1
A flow speed of the gas-dissolved water increases as it flows through the diameter-reducing flow path, as a result of which its pressure is reduced. Bubbles are generated as a result of this pressure reduction of the gas-dissolved water.
Implementation Method 2
Then, the pressure of the gas-dissolved water is gradually increased as the gas-dissolved water flows through the diameter-increasing flow path. When the pressure of the gas-dissolved water is increased after the bubbles were generated by the pressure reduction, the bubbles included in the gas-dissolved water break up into fine bubbles.
Implementation Method 3
a plurality of first vanes disposed inside the first outer peripheral portion and configured to generate a first swirling flow flowing in a first swirling direction with respect to a center axis of the second fine bubble generation portion
Implementation Method 4
Due to the gas-dissolved water transitioning from being the swirling flow flowing in the first swirling direction to the swirling flow flowing in the second swirling direction, a turbulent flow is thereby generated and enhanced.
Implementation Method 5
Due to the turbulent flow being enhanced, the gas-dissolved water flowing along the respective second vanes can easily collide with each other. Due to this collision of the gas-dissolved water, the fine bubbles in the gas-dissolved water break up and are refined into finer bubbles, and a volume of the fine bubbles increases.
Data Source
AI summary
A fine bubble generator may include an inlet; an outlet; a first fine bubble generation portion; and a second fine bubble generation portion. The first fine bubble generation portion includes: a diameter-reducing flow path and a diameter-increasing flow path. The second fine bubble generation portion includes: a first swirling flow generation portion; and a second swirling flow generation portion. The first swirling flow generation portion includes: a first outer peripheral portion; and a plurality of first vanes disposed configured to generate a first swirling flow flowing in a first swirling direction with respect to a center axis of the second fine bubble generation portion. The second swirling flow generation portion includes: a second outer peripheral portion; and a plurality of second vanes configured to generate a second swirling flow flowing in a second swirling direction opposite to the first swirling direction with respect to the center axis.