Stable Electrolyzed Water Preparation via Voltage Feedback Control
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Solution Overview
Problem
Existing methods for preparing slightly acidic electrolyzed water result in an uncontrollable and unstable concentration of hypochlorous acid, leading to low effective power due to varying electrolyte stock solution concentrations and increased heat generation.
Innovation Solution
A method and device that adjust the solution addition velocity of an electrolyte stock solution based on the difference between detected and control voltages in the electrolytic cell, ensuring real-time addition and maintaining a stable concentration of slightly acidic electrolyzed water by compensating for electrolyte stock solution decrease and increasing electrolysis velocity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a constant current is used and electrolyte stock solution is added at intervals, then the preparation process is simple, but the concentration of hypochlorous acid water becomes unstable and effective power decreases
Solution Approach 1:
The patent implements a feedback control system where the concentration of electrolyte stock solution in the electrolytic cell is continuously detected, and the metering pump's addition velocity is automatically adjusted based on the detected concentration to maintain stable hypochlorous acid output. This resolves the contradiction by replacing simple intermittent addition with an automated feedback-controlled continuous addition system.
Solution Approach 2:
The patent transitions from static constant current electrolysis to dynamic electrolysis where both the current and electrolyte addition rate are continuously adjusted. The system dynamically adapts the electrolysis parameters based on real-time concentration feedback, enabling stable hypochlorous acid concentration while maintaining process simplicity through automation.
2Quantity of substance
If electrolyte stock solution concentration is high at the beginning, then large amount of chlorine gas is produced and hypochlorous acid water concentration is high, but heat generation is greatly increased and effective power is low
Solution Approach 1:
The patent applies dynamic control to the electrolyte stock solution addition rate, adjusting it in real-time based on detected concentration and heat generation levels. This prevents excessive concentration buildup that causes high heat generation, thereby maintaining efficient effective power utilization while controlling chlorine gas production at optimal levels.
Solution Approach 2:
The patent changes the operating parameters of the electrolysis process dynamically, specifically adjusting the electrolyte addition rate and current based on real-time monitoring of concentration and temperature. This enables the system to operate at optimal efficiency points, preventing the condition where high concentration leads to excessive heat and reduced effective power.
3Quantity of substance
If electrolyte stock solution concentration decreases after electrolysis, then chlorine gas production is low and hypochlorous acid water concentration is low, but continuous operation requires frequent manual intervention
Solution Approach 1:
The patent implements automated feedback control where the metering pump continuously monitors electrolyte stock solution concentration and automatically adjusts the addition rate to maintain optimal levels. This eliminates the need for manual intervention to replenish electrolyte, achieving continuous stable operation with high automation while maintaining appropriate chlorine gas production levels.
Solution Approach 2:
The system performs self-service by automatically detecting and replenishing electrolyte stock solution as needed. The metering pump monitors its own operational parameters and autonomously adjusts the electrolyte addition rate, enabling the system to maintain stable hypochlorous acid production without external manual intervention, thus resolving the contradiction between continuous operation and automation level.
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 solution achieves a controllable and stable concentration of slightly acidic electrolyzed water by enhancing chlorine gas generation and reaction velocity, overcoming the limitations of previous methods and ensuring consistent output.
Implementation Method 1
an electrolyte stock solution is pumped into an electrolytic cell by a metering pump, and then electrolyzed by energization, and the generated chlorine gas
Implementation Method 2
the generated chlorine gas is introduced into a mixer and mixed with tap water, thereby producing hypochlorous acid water
Data Source
AI summary
The disclosure provides a method and device for preparing slightly acidic electrolyzed water with a controllable and stable concentration. According to the method, a solution addition velocity of a first solution addition device is adjusted according to a difference between a detected voltage Udetected and a control voltage Ucontrol in an electrolytic cell, so that the first solution addition device adds an electrolyte stock solution to the electrolytic cell in real time, thereby preparing the slightly acidic electrolyzed water with a controllable and stable concentration. The device includes an electrolyte stock solution storage, an electrolytic cell and a first mixer connected sequentially. A first solution addition device is connected in series between the electrolyte stock solution storage and the electrolytic cell. The disclosure overcomes the defects of uncontrollable and unstable concentration in the preparation of present slightly acidic electrolyzed water.