Valve Manifold with Automatic Bypass for Water Purification
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Solution Overview
Problem
Existing water purification systems often remain in filtration mode until manually switched back to bypass mode, leading to unnecessary filtration and increased costs due to filter wear and unfiltered water dispensing when not needed.
Innovation Solution
A valve manifold with an electrically operated valve and a control unit that automatically switches back to bypass mode after a predetermined time has elapsed since the faucet was closed, ensuring filtered water is only dispensed when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system remains in filtration mode until manually switched back, then filtered water is always available when the faucet is opened, but filters wear out faster and unfiltered water is dispensed when not needed
Solution Approach 1:
The system performs preliminary action by keeping the valve in filtration mode for a predetermined time after faucet closure to ensure filtered water is ready for the next opening, while the timer mechanism preliminarily determines when to switch back to bypass mode to prevent unnecessary filtration
Solution Approach 2:
The timer mechanism provides feedback control by monitoring the time since faucet closure and automatically switching the valve between filtration and bypass modes based on whether the predetermined time has elapsed, creating a closed-loop system that adjusts filtration based on actual usage patterns
2Stress or pressure
If the inlet port is aligned coaxially with the outlet port, then water flow is quieter with less pressure drop, but the valve manifold structure becomes more complex
Solution Approach 1:
The valve manifold is segmented into distinct functional sections: a body portion with coaxially aligned inlet and outlet ports for quiet water flow, and a separately mounted valve assembly containing the solenoid valve and timer mechanism. This segmentation allows the coaxial port configuration to be implemented without overly complicating the overall structure
Solution Approach 2:
The valve assembly is merged with the body portion through fluid communication, combining the benefits of coaxial port alignment for quiet flow with the functionality of an electrically controlled valve. The merged design allows unfiltered water to flow quietly through the coaxial ports while the valve assembly controls diversion to the filter based on timer feedback
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 solution extends the life of filters by reducing unnecessary filtration and ensures filtered water is available when needed, while also minimizing the dispensing of unfiltered water.
Implementation Method 1
a solenoid valve assembly positioned within the bypass passageway and adapted to be energized by the control unit in response to receipt of a filtered water request
Data Source
AI summary
Various examples are provided for water purification systems that employ filters, and more particularly to water purification systems that extend the life of such filters. In one example, the water purification system includes a valve that in an energized position allows the flow of unfiltered water through a filter assembly containing filters. A monitor is provided to detect whether the faucet has been moved to the closed position. In the event no movement of the faucet from the closed position is detected within a predefined time interval, then the valve is de-energized causing water flow to bypass the filter assembly, thus extending filter life. In another example, the water purification system provides a flow path having a straight-line geometry to provide for quieter water flow and reduces pressure drop.