Gas-in-Liquid Pressure Control for Accurate Dissolved Gas Adjustment
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Solution Overview
Problem
Existing devices for adjusting gas concentration in liquids, such as carbon dioxide in wine, face inefficiencies in gas dissolution and accuracy in concentration adjustment.
Innovation Solution
The device incorporates a pressure regulator with setpoints controlled by a gas concentration sensor, allowing for PID adjustments of gas pressure between the regulator and the cartridge, optimizing gas exchange and concentration accuracy by varying gas flow rates based on measured gas levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a gas adjusting valve with setpoint-controlled flow rate is used, then the gas flow rate can be controlled, but the liquid gassing efficiency and dissolution optimization are insufficient
Solution Approach 1:
The patent implements a feedback control system where a dissolved oxygen sensor continuously monitors the actual gas concentration in the liquid and compares it with the setpoint. The controller automatically adjusts the gas pressure regulator based on the deviation between actual and target values, creating a closed-loop system that simultaneously optimizes gassing efficiency and maintains precise concentration control.
Solution Approach 2:
The system dynamically changes the gas pressure parameter to optimize gas dissolution. By adjusting the pressure of gas supplied to the cartridge based on real-time concentration measurements, the system enhances mass transfer efficiency while maintaining accurate control over the final dissolved gas concentration in the liquid.
2Productivity
If gas pressure is increased to improve gas exchange, then gas dissolution efficiency improves, but control accuracy over concentration may deteriorate
Solution Approach 1:
The system employs dynamic pressure control where the gas pressure is continuously adjusted based on real-time feedback from the dissolved oxygen sensor. Rather than using a fixed high pressure, the pressure regulator dynamically modulates gas pressure to achieve optimal dissolution efficiency while preventing overshoot and maintaining precise concentration control through adaptive adjustment.
Solution Approach 2:
The closed-loop feedback system monitors dissolved gas concentration and automatically adjusts gas pressure to maintain the setpoint. When concentration approaches the target value, the system reduces pressure to prevent overshoot, thereby achieving both efficient gas exchange and precise concentration control through continuous adaptation.
3Measurement precision
If a pressure regulator with PID adjustment is used, then concentration control accuracy improves, but system complexity increases
Solution Approach 1:
The PID control system operates autonomously to maintain setpoint concentration. The controller automatically processes sensor feedback, calculates the necessary pressure adjustments, and actuates the pressure regulator without requiring manual intervention. This self-regulating capability achieves high concentration control accuracy while minimizing the need for complex external control mechanisms.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with an automated electronic control system. The PID controller uses electronic signal processing and automated actuation to replace what would otherwise require complex manual valve adjustments and mechanical feedback mechanisms, achieving superior control accuracy with a more streamlined system architecture.
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 approach significantly enhances the efficiency and accuracy of gas dissolution in liquids, ensuring rapid convergence to setpoint concentrations, particularly in wine, by dynamically adjusting gas pressure and flow paths.
Implementation Method 1
the amount of gas exchanging with the liquid in the cartridge (and therefore the flow rate of gas exchanging with the liquid) varies depending on the value of the pressure of the gas between the pressure regulator and the cartridge
Implementation Method 2
an amount of gas in the liquid measured by a gas concentration sensor located in the liquid discharge pipe
Implementation Method 3
a cartridge based on porous hydrophobic walls, which do not permit the passage of the gases into the liquid or out of the latter
Implementation Method 4
a cartridge based on porous hydrophobic walls
Data Source
AI summary
The device for adjusting the concentration of a gas in a liquid includes a cartridge in which the concentration of the gas in the liquid is adjusted, a pipe for supplying the liquid into the cartridge, a pipe for supplying gas into the cartridge, and a pipe for discharging the liquid from the cartridge. The gas supply pipe includes an expansion valve with of which the pressure setpoint that is controlled by a setpoint for the quantity amount of gas in the liquid and by an amount of a quantity of gas in the liquid measured by a gas concentration sensor located in the liquid discharge pipe.