Aeration Diffuser Pores for Fine Bubble Oxygen Transfer
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Solution Overview
Problem
Existing aeration system diffusers face limitations in creating small and fine bubbles due to the material constraints of elastomeric membranes, which restrict slit size and density, thereby limiting the increase in dissolved gas concentration in water pools.
Innovation Solution
A diffuser design featuring a diaphragm with a textured structure of fibrous filaments and a reinforcement layer, allowing for the formation of fine bubbles by creating a back pressure that opens pores for gas diffusion and preventing backflow, enhancing radial diffusion and oxygen concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the slits are made as small as possible and provided at high density to increase dissolved gas concentration, then the gas diffusion efficiency is improved, but the tensile strength of the elastomeric membrane is insufficient to resist the back pressure
Solution Approach 1:
The patent uses a composite structure combining an elastomeric membrane with a porous plate made of sintered metal or plastic. This composite design allows the porous plate to provide the necessary mechanical strength to resist back pressure while the membrane provides the sealing function. The porous plate's controlled pore structure enables fine bubble formation and high gas diffusion efficiency without compromising structural integrity.
Solution Approach 2:
The patent introduces a porous plate with controlled pore size and distribution as a key component. This porous structure allows gas to pass through in a controlled manner, creating fine bubbles while the material's inherent strength supports the back pressure. The porous plate's design optimizes both gas diffusion efficiency and mechanical durability.
2Manufacturing precision
If the slits are made small and dense to form fine bubbles, then the bubble size is reduced and gas concentration is increased, but the manufacturing complexity and material constraints increase
Solution Approach 1:
The porous plate provides a ready-made structure with uniform pore distribution and controlled pore size. This eliminates the need for precise slit cutting or molding operations required in membrane diffusers. The porous structure is formed through sintering processes that naturally create consistent pore patterns, simplifying manufacturing while achieving fine bubble formation.
Solution Approach 2:
The patent extracts the gas diffusion function from the elastomeric membrane and assigns it to a separate porous plate component. This separation allows the membrane to focus solely on sealing while the porous plate handles gas distribution. The modular design simplifies manufacturing and maintenance.
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 diffuser significantly increases dissolved oxygen concentration in water pools by forming fine bubbles, outperforming conventional diffusers by enhancing gas diffusion and maintaining high oxygen levels.
Implementation Method 1
a valve member configured to engage the valve seat so as to close the inlet; and a diaphragm including... when the back pressure at the upstream side is higher than an ambient pressure at the downstream side, the valve member is forced to move away from the valve seat to place the diaphragm in an aerating position
Implementation Method 2
the introduced aerating gas is permitted to be bubbled through said plurality of pores... in the aerating position, the introduced aerating gas is permitted to be bubbled through said plurality of pores
Implementation Method 3
a surrounding web segment which is interposed between the central portion and the peripheral portion, and which is configured to stay in abutment with the outer major surface in the non-aerating position, the surrounding web segment including a plurality of fibrous filaments which are arranged to form a textured structure with a plurality of pores
Implementation Method 4
the surrounding web segment including a plurality of fibrous filaments which are arranged to form a textured structure with a plurality of pores of a dimension such that in the aerating position, the introduced aerating gas is permitted to be bubbled through said plurality of pores
Data Source
AI summary
This invention relates to a diffuser for an aeration system, including a base, a diaphragm and a valve member attached to the diaphragm. The base is provided with a valve seat for engaging with the valve member to close the inlet of the aerating gas. Furthermore, the diaphragm includes a central portion, a peripheral portion attached to the periphery of the base, and a surrounding web segment interposed therebetween. The surrounding web segment includes a plurality of fibrous filaments which are arranged to form a textured structure with a plurality of pores of a dimension such that the aerating gas, when introduced, is permitted to be bubbled through the plurality of pores, so as to form fine and small bubbles in the water.