Submersible Nano-Bubble Generator Using Rotatable Permeable Member
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Solution Overview
Problem
Existing aeration systems are inefficient for large bodies of water and often impractical due to equipment accessibility issues, necessitating a need for an alternative means to increase oxygen saturation levels.
Innovation Solution
A submersible aeration device using a rotatable permeable member with pores that simulates turbulent flow above the threshold, shearing gas to form nano-bubbles, which are then dispersed in the liquid to enhance oxygenation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If pump or blower systems are used to supply gas to liquid medium, then gas saturation level can be achieved, but the system becomes inefficient for large bodies of water and equipment accessibility becomes difficult
Solution Approach 1:
The liquid medium itself serves as the carrier for gas distribution through its natural circulation patterns. The permeable member allows gas to transfer directly into the liquid, eliminating the need for external pumping systems to recirculate large volumes of water for aeration purposes
Solution Approach 2:
The invention extracts the core function of gas transfer from the complex pump-blower-recirculation system and isolates it into a simple permeable member that directly introduces gas into the liquid medium at the desired location, removing unnecessary equipment
2Quantity of substance
If recirculation pumping is used to dissolve gas into liquid, then oxygen saturation can be increased, but energy efficiency decreases and equipment accessibility becomes an issue
Solution Approach 1:
The liquid medium's natural movement and the direct gas introduction through the permeable member create an energy-efficient system that dissolves oxygen without requiring external pumping energy to force circulation through aeration equipment
Solution Approach 2:
The invention replaces the mechanical pump-blower system with a passive permeable member that allows gas to dissolve into the liquid through natural diffusion and contact, eliminating the need for mechanical energy input to drive the aeration process
3Productivity
If traditional aeration systems are used for large bodies of water, then gas transfer can occur, but the systems become impractical due to equipment accessibility and efficiency issues
Solution Approach 1:
The invention extracts the essential gas transfer function from the complex traditional aeration system and implements it through a single permeable member, simplifying the overall system while maintaining or improving gas transfer efficiency in large water bodies
Solution Approach 2:
The system utilizes the natural properties of the liquid medium and direct gas introduction to achieve efficient aeration without requiring complex recirculation infrastructure, making it practical for large bodies of water where traditional systems fail
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 device efficiently generates nano-bubbles, enhancing gas diffusion and dissolution in large volumes of liquid without requiring additional pumping, suitable for various applications including lakes, ponds, and oceans.
Implementation Method 1
When rotated, the axially rotatable permeable member simulates turbulent flow above the turbulent velocity threshold (e.g., 2 m/s or higher) in the liquid such that the liquid shears gas from the outer surface of the rotatable permeable member to form nano-bubbles
Implementation Method 2
the liquid shears gas from the outer surface of the rotatable permeable member to form nano-bubbles
Implementation Method 3
The axially rotatable permeable member includes a body having a wall and a plurality of pores through which gas introduced into the axially rotatable permeable member can flow
Implementation Method 4
enhancing gas diffusion and dissolution in large volumes of liquid
Data Source
Figure 1A
Figure 1B~1C
Figure 1D
AI summary
An apparatus for producing nano-bubbles in a volume of liquid is described. The apparatus includes a motor having a rotatable shaft, an axially rotatable permeable member couplable to a gas inlet, and a rotatable tube support coupled to the rotatable shaft of the motor and having an inner cavity that houses the axially rotatable permeable member. When rotated, the axially rotatable permeable member is rotated so that the surface velocity of the rotatable permeable member simulates axial turbulent flow above the turbulent threshold in the liquid that allows the liquid to shear gas from the outer surface of the axially rotatable permeable member, thereby forming nano-bubbles in the liquid.