Rotary Valve Flow Switching to Prevent Scale in Electrolyzed Water Paths
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Solution Overview
Problem
In existing electrolyzed water generation devices, continuous selection of electrolytic hydrogen water leads to scale precipitation in the outer flow path due to continuous flow of cathode-side electrolyzed water, causing deposition and scaling issues.
Innovation Solution
A valve device with multiple switching positions that allows fluid paths to be changed between inner and outer flow paths, preventing continuous flow of electrolytic hydrogen water into the outer path and facilitating the use of electrolytic acidic water to clean the system, thereby reducing scale deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the first electrolyzed water drain outlet always communicates with the outer flow path, then electrolyzed water can be continuously discharged, but scale precipitates and deposits in the outer flow path causing maintenance issues
Solution Approach 1:
The patent implements periodic switching between inner and outer flow paths using a four-position rotary valve. The valve alternates which discharge outlet communicates with the outer flow path, preventing continuous scale deposition by periodically changing the flow path configuration. This allows the system to maintain continuous discharge capability while preventing scale accumulation in any single path.
Solution Approach 2:
The patent introduces a dynamic switching mechanism (rotary valve with four switching positions) that changes the communication relationships between supply ports, discharge ports, and flow paths based on operational needs. This dynamic reconfiguration allows the system to adapt between different discharge modes and prevent scale deposition by varying which path is active.
2Ease of repair
If polarity is reversed to clean scale from electrodes, then electrode cleaning is achieved, but the rotational angle position of the internal cylinder body must be changed requiring complex coordination
Solution Approach 1:
The patent combines the polarity reversal function with the flow path switching function into a single integrated control system. When the rotary valve switches between positions, it simultaneously changes both the flow path configuration and the polarity arrangement, eliminating the need for separate coordination mechanisms and reducing overall system complexity.
Solution Approach 2:
The rotary valve mechanism serves multiple functions: it controls flow path switching, selects discharge outlets, and coordinates polarity reversal. This multi-functionality reduces the need for separate control mechanisms and simplifies the overall device structure while maintaining the ability to clean electrodes effectively.
Data Source
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AI summary
A valve device 1 includes a housing 2 and a valve body 4. The valve body 4 has a first switching position where a first supply port 31 and a first discharge port 33 communicate via an inner flow path 44 and a second supply port 32 and a second discharge port 34 communicate via an outer flow path 45, a second switching position where the first supply port 31 and the second discharge port 34 communicate via the outer flow path 45 and the second supply port 32 and the first discharge port 33 communicate via the inner flow path 44, a third switching position where the first supply port 31 and the first discharge port 33 communicate via the outer flow path 45 and the second supply port 32 and the second discharge port 34 communicate via the inner flow path 44, and a fourth switching position where the first supply port 31 and the second discharge port 34 communicate via the inner flow path 44 and the second supply port 32 and the first discharge port 33 communicate via the outer flow path 45.