Reverse Osmosis Water Blending Control via Flow Restrictor
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Solution Overview
Problem
Current commercial water filtration systems are costly and complex due to the need for multiple filtering components to achieve consistent water quality across varying water sources and pressures, making them impractical for widespread use.
Innovation Solution
A reverse osmosis water filtration system with a housing, reverse osmosis cartridge, unfiltered waterline, and blend waterline, where the flow restrictor and blend valve control the flowrates to achieve a consistent blended water mixture with a specific total dissolved solids (TDS) value, allowing for efficient and consistent filtration without the need for multiple components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple filtering components are used to achieve consistent water quality, then water quality consistency is improved, but system complexity and cost increase
Solution Approach 1:
The system segments the water treatment process into two distinct pathways: a reverse osmosis pathway for highly purified water and a bypass pathway for partially treated water. This segmentation allows each pathway to be optimized independently, achieving consistent blended water quality without requiring multiple filtering components in series.
Solution Approach 2:
The system changes the operational parameters by controlling flow rates through the reverse osmosis cartridge and bypass line to achieve a target TDS range. By dynamically adjusting the blend ratio based on feed water conditions, the system maintains consistent output quality without requiring fixed, complex filtration configurations.
2Reliability
If multiple filtering components are used to achieve consistent water quality, then water quality consistency is improved, but system cost increases
Solution Approach 1:
The system extracts only the essential reverse osmosis filtration step while removing unnecessary intermediate filtration components. By taking out the core RO function and combining it with a simple bypass mechanism, the system achieves consistent water quality at a lower cost than traditional multi-component filtration systems.
Solution Approach 2:
The system uses the feed water itself to provide the bypass flow, eliminating the need for additional treatment components. The natural pressure differential and flow characteristics of the feed water are utilized to maintain the bypass line, reducing system complexity and cost while ensuring consistent blended water quality.
3Manufacturing precision
If flow rates are controlled to achieve specific TDS values, then water quality consistency is improved, but system complexity increases
Solution Approach 1:
The system incorporates TDS sensors that continuously monitor the blended water output and provide feedback to the controller. This feedback mechanism allows the system to automatically adjust flow rates through the reverse osmosis cartridge and bypass line to maintain the target TDS range, achieving precise control without complex manual intervention.
Solution Approach 2:
The system replaces complex mechanical flow control mechanisms with electronic control via solenoid valves and a controller. This substitution allows for precise, dynamic adjustment of flow rates based on real-time TDS measurements, achieving manufacturing precision with simpler overall 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
The system provides a compact, efficient, and cost-effective solution for achieving consistent water quality by balancing flowrates and mineral content, reducing installation time, and minimizing waste and energy consumption, while allowing for tailored mineral content adjustments.
Implementation Method 1
a reverse osmosis cartridge... The reverse osmosis cartridge receives a first portion of pretreated water from the pre-filter cartridge
Implementation Method 2
The unfiltered waterline includes a flow restrictor... The flow restrictor provides the second flowrate at a substantially equal rate to the first flowrate
Data Source
AI summary
A reverse osmosis water system including a housing, a reverse osmosis cartridge, an unfiltered waterline, and a blend waterline. The housing includes an inlet and an outlet. A medial waterline transports pretreated water to the reverse osmosis cartridge. An unfiltered waterline includes a flow restrictor. A blend waterline transports a blended water mixture to the outlet. The blended waterline receives filtered water at a first flowrate from the medial waterline and unfiltered water at a second flowrate downstream of the flow restrictor. The flow restrictor provides the second flowrate at a substantially equal rate to the first flowrate.