Blind Hole Pressure Sensor Flow Meter for Hydroxyl Radical Generation
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Solution Overview
Problem
Conventional flow meters, such as rotameters and electromagnetic flow meters, have limitations in measuring flow rates in large-diameter pipelines and low-conductivity liquids, and they often have complex structures that are prone to blockages and difficult to miniaturize, limiting their application, especially in producing active hydroxyl free radical solutions.
Innovation Solution
A flow meter with a simple structure comprising a meter body and a pressure sensor, where the pressure sensor is mounted in a blind hole within the meter body, allowing it to measure changes in liquid pressure caused by flow rate changes, integrated into a device for producing active hydroxyl free radicals by electrolyzing conductive initial fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flow meters (rotameter or electromagnetic flow meter) are used, then flow rate measurement is achieved, but the structure becomes complex and prone to blockage
Solution Approach 1:
The patent extracts the flow measurement function from complex mechanical or electromagnetic structures and implements it using a simple pressure sensor that detects pressure changes caused by flow rate variations. This reduces the device to essential components only, eliminating complex moving parts while maintaining measurement capability
Solution Approach 2:
The patent replaces mechanical measurement mechanisms (float in rotameter, moving parts in electromagnetic flow meter) with a pressure-based detection system. The pressure sensor converts flow rate information into electrical signals without mechanical movement, thereby simplifying the structure and reducing blockage risks
2Measurement precision
If conventional flow meters are used, then flow rate measurement is achieved, but miniaturization is difficult
Solution Approach 1:
The patent extracts only the essential measurement function and implements it with a compact pressure sensor and simple pressure chamber structure. By eliminating unnecessary components, the device achieves miniaturization while preserving flow measurement accuracy
Solution Approach 2:
The pressure sensor is mounted within the pressure chamber in a nested configuration, with the sensor integrated into the chamber structure. This space-efficient arrangement allows the measurement function to be contained within a minimal volume
3Device complexity
If simple structure flow meter is used, then device complexity is reduced, but measurement capability in various conditions may be limited
Solution Approach 1:
The pressure-based measurement principle is universally applicable to various fluid types and flow conditions. The same simple structure can measure flow rates in different applications by adjusting the pressure chamber dimensions and sensor parameters, providing measurement adaptability without increasing structural complexity
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 flow meter effectively measures flow rates of incompressible fluids, enabling the production of sterilized fluids with active hydroxyl free radicals, controlling the activation of the sterilization unit based on flow rate, and ensuring efficient generation and concentration of hydroxyl radicals.
Implementation Method 1
The pressure sensor is mounted in the mounting hole, and has a resistance value that is configured to be measured and that is configured to be changed correspondingly with a change in liquid pressure caused by a change in flow rate
Implementation Method 2
The sterilization unit is disposed in the first chamber portion for electrolyzing the initial fluid so as to form the initial fluid into the sterilized fluid
Data Source
AI summary
A flow meter includes a meter body and a pressure sensor. The meter body has a liquid impact surface, a sensing surface opposite to the liquid impact surface, and a mounting hole extending from the sensing surface toward the liquid impact surface. The mounting hole is a blind hole. The pressure sensor is mounted in the mounting hole, and has a resistance value that can be measured and that can be changed correspondingly with a change in liquid pressure caused by a change in flow rate. A device for producing an active hydroxyl free radical solution is also disclosed.