Mixing Device for Hydrogen Peroxide and Water
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Solution Overview
Problem
Existing mixing devices for hydrogen peroxide and water do not facilitate efficient mixing, as they rely on laminar flow which is less effective for hydrogen peroxide dispersion compared to turbulent flow.
Innovation Solution
A mixing device with a mixing chamber design that includes a 90-degree bend piece and strategically positioned nozzles to create turbulent flow, where the water supply opening is larger than the nozzle opening, and hydrogen peroxide is injected perpendicular to the water flow, enhancing turbulence and mixing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional mixing device with laminar flow is used, then the structure is simple, but the mixing efficiency is low
Solution Approach 1:
The mixing chamber is segmented into distinct functional zones: an injection zone with multiple nozzles for hydrogen peroxide delivery, a mixing zone with optimized geometry to generate turbulence, and an outlet zone. This segmentation allows each zone to be optimized for its specific function while collectively achieving efficient mixing without excessive overall complexity.
Solution Approach 2:
The patent introduces multi-dimensional flow patterns by positioning nozzles at different angles and heights within the mixing chamber. The water supply opening and drain opening are arranged at right angles to each other, creating three-dimensional flow paths that generate turbulence and enhance mixing efficiency beyond what linear or two-dimensional arrangements can achieve.
2Productivity
If hydrogen peroxide is injected parallel to water flow, then the injection is simple, but the mixing is insufficient
Solution Approach 1:
The nozzles are arranged asymmetrically with respect to the water flow direction. Some nozzles inject hydrogen peroxide parallel to the flow, while others inject at angles (including perpendicular injection). This asymmetric arrangement creates varied flow patterns that enhance turbulence and dispersion effectiveness compared to uniform parallel injection.
Solution Approach 2:
The patent employs nozzles oriented in multiple dimensions relative to the water flow, including perpendicular injection angles. This multi-dimensional injection strategy creates complex flow patterns that accelerate dispersion and mixing by introducing turbulence at multiple orientations simultaneously.
3Productivity
If the water supply opening cross section is equal to or smaller than the nozzle opening, then the flow is smooth, but turbulence is insufficient for effective mixing
Solution Approach 1:
The patent deliberately changes the geometric parameter relationship between the water supply opening cross-section and nozzle opening cross-section, making the water supply opening larger than the nozzle opening. This parameter change creates a contraction effect that generates turbulence and enhances mixing speed by accelerating the flow and creating chaotic flow patterns.
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 improves the mixing of hydrogen peroxide and water by creating turbulent flow, allowing for faster and more effective dispersion of hydrogen peroxide, enhancing disinfection or purification processes.
Implementation Method 1
the cross section of the mixing chamber at the location of the water supply opening being larger than the cross section of the water supply opening so that the water leaving the water supply opening and entering the mixing chamber creates a turbulence in the water flow
Implementation Method 2
at the water supply opening there is at least one nozzle for injecting hydrogen peroxide into the water flow, which nozzle is directed to the water flow entering the mixing chamber
Implementation Method 3
Hydrogen peroxide and water can be mixed faster in a turbulent flow than in a laminar flow
Implementation Method 4
a bend piece being inside the mixing chamber, a first end of the bend piece being connected to one of the connecting pieces and the other end of the bend piece defining the water supply opening, that is at right angles to the drain opening, such that the direction of the water flow entering the mixing chamber and the direction of the flow of the mixture leaving the mixing chamber are at right angles to each other
Data Source
Figure 1~2
Figure 3~5
AI summary
A mixing device 1 comprises a mixing chamber 3 with a water supply opening 5 and an drain opening 6 for draining the mixture of hydrogen peroxide and water. The cross section of the mixing chamber 3 at the location of the water supply opening 5 is larger than the cross section of the water supply opening 5 so that the water leaving the water supply opening 5 and entering the mixing chamber 3 creates a turbulence in the water flow. At or near the water supply opening 5 there are four nozzles 7 for injecting liquid hydrogen peroxide into the water flow. A bend piece 17 being inside the mixing chamber 3 and being connected to the connecting piece 13. The other end 17b of the bend piece defining the water supply opening 5, that is at right angles to the drain opening 6.