Electrolyzed Water Generator Control Unit for Electrode Scale Management
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Solution Overview
Problem
The existing electrolyzed water generators face challenges in optimizing the timing for cleaning the electrolytic bath due to indirect methods of determining scale formation, which can lead to over-cleaning or insufficient cleaning, and risk damage to the electrode plates.
Innovation Solution
An electrolyzed water generator with a control unit that detects the cleaning timing based on the integrated value of current (i) and flow rate (f), using the parameter C·(i/f), where C is a constant, and performs cleaning when the absolute value of this integrated value reaches a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cleaning is performed at regular intervals, then the electrolytic bath is maintained, but over-cleaning or insufficient cleaning may occur leading to electrode damage
Solution Approach 1:
The control unit continuously monitors the integrated value of C·(i/f) during electrolysis and uses this feedback to determine the optimal cleaning timing. This closed-loop control ensures cleaning is performed only when scale formation reaches a critical threshold, preventing both over-cleaning and insufficient cleaning, thereby extending electrode plate durability while simplifying operation.
Solution Approach 2:
The system automatically calculates the integrated value of C·(i/f) and triggers cleaning operations without user intervention. The control unit self-manages the cleaning schedule based on real-time electrolysis parameters, eliminating the need for manual timing optimization and preventing electrode damage through automated threshold-based control.
2Measurement precision
If cleaning timing is determined by raw water hardness, then scale formation can be estimated, but the method is indirect and does not reflect actual scale formation during electrolysis
Solution Approach 1:
The patent replaces indirect chemical measurement methods (raw water hardness testing) with direct electrical parameter monitoring. By substituting the mechanical/chemical measurement approach with electrical measurement of current and flow rate during electrolysis, the system achieves more accurate scale formation detection that directly reflects actual conditions in the electrolytic bath.
Solution Approach 2:
The integrated value of C·(i/f) serves as an intermediary parameter that correlates electrolysis conditions with scale formation. This intermediary metric allows the control unit to indirectly measure scale formation trends without directly observing the scale, using readily available electrical measurements to infer the state of scale buildup during the electrolysis process.
3Object-generated harmful factors
If reverse polarity cleaning is used to remove scale, then scale can be removed, but there is a risk of damage or deterioration of the electrode plate
Solution Approach 1:
The control unit calculates the integrated value of C·(i/f) during normal electrolysis and predicts when scale formation will reach a problematic level. By performing cleaning operations based on this preliminary assessment rather than waiting for visible scale buildup, the system removes scale proactively at optimal intervals, reducing the need for aggressive reverse polarity cleaning and thereby minimizing electrode plate damage.
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 allows for appropriate timing of electrolytic bath cleaning, optimizing scale removal without relying on raw water hardness or mode of use, using existing sensors and avoiding additional device requirements, thus preventing electrode wear and scale buildup.
Implementation Method 1
a power supply unit for allowing current to flow between the anode and the cathode... the control unit controls the power supply unit so as to cause electrolysis of raw water introduced into the electrolytic bath
Data Source
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AI summary
A disclosed electrolyzed water generator 1 includes: at least a pair of an anode 32 and a cathode 31; an electrolytic bath 3 having anode and cathode compartments 32a and 31a separated from each other by a diaphragm 33, with the anode 32 housed in the anode compartment 32a and the cathode 31 housed in the cathode compartment 31a; a power supply unit for allowing current to flow between the anode 32 and the cathode 31; and a control unit 10 for controlling the power supply unit 14. The control unit 10 is configured to control the power supply unit 14 so as to cause electrolysis of raw water introduced into the electrolytic bath 3, so that cathode water and anode water are produced in the cathode compartment 31a and the anode compartment 32a, respectively. The control unit 10 detects an electrolytic bath cleaning timing, based on a value of C·(i/f), where the C is a constant, given that a current applied during the electrolysis is denoted by i [A] and a flow rate of the raw water during the electrolysis is denoted by f [L/sec]. Thus, the electrolytic bath 3 can be cleaned at an appropriate timing.