Reverse Osmosis Filtration System with Pump Unit for Low Pressure Stability
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Solution Overview
Problem
Reverse osmosis filtration systems struggle to operate stably when the pressure of the raw water pipeline is low, leading to instability and potential dissatisfaction in water supply.
Innovation Solution
Incorporating a pump unit with a low-pressure control portion and a high-pressure control portion, along with a bypass pipeline, to selectively pump water and manage pressure thresholds in the raw water and product water pipelines, ensuring stable operation even at low pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional reverse osmosis filtration system is used without a pump unit, then the system structure is simple and cost is low, but the system cannot operate stably when the raw water pipeline pressure is low
Solution Approach 1:
A pump unit is introduced as an intermediary component between the raw water pipeline and the reverse osmosis filtration unit. The pump unit acts as a mediator that actively regulates water pressure and flow, enabling the system to operate stably under varying raw water pressures. This intermediary component resolves the contradiction by adding controlled complexity only where needed to ensure reliable operation.
Solution Approach 2:
The pump unit incorporates dynamic pressure regulation capabilities with low-pressure and high-pressure control portions that automatically adjust system operation based on real-time pressure conditions. This dynamic adaptation allows the system to maintain stability across a wide pressure range, transforming a static system into one that can respond to changing operating conditions.
2Reliability
If a high power pump is used to ensure stable operation at low pressure, then the operation stability is improved, but the noise and vibration increase
Solution Approach 1:
The pump unit utilizes parameter changes in pressure thresholds to optimize its operation. By incorporating low-pressure and high-pressure control portions with specific pressure thresholds, the pump can adjust its power consumption and operating parameters dynamically. This allows the system to use lower power when conditions permit, reducing noise and vibration while maintaining stability when needed.
Solution Approach 2:
The pump unit operates in periodic cycles, activating only when pressure conditions require intervention. The control portions monitor pressure continuously and trigger pump operation only during low-pressure periods, allowing the system to remain passive during normal pressure conditions. This periodic action reduces overall noise and vibration compared to continuous high-power operation.
3Reliability
If the pump operates continuously to maintain pressure, then the pressure stability is improved, but the energy consumption increases
Solution Approach 1:
The pump unit incorporates feedback control through low-pressure and high-pressure control portions that continuously monitor system pressure conditions. This feedback mechanism allows the pump to operate only when and where pressure deviations occur, rather than running continuously. The feedback loop ensures pressure stability is maintained through minimal, targeted pump intervention, significantly reducing energy consumption compared to continuous operation.
Solution Approach 2:
The system is designed to maintain pressure stability through passive pressure equalization and storage tank pressure when possible, with the pump unit serving only to correct pressure deficiencies. This self-service approach allows the system to regulate itself during normal operation, requiring pump energy only when external pressure conditions fall below operational thresholds.
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 maintains stable operation and reduces noise and vibration by using a lower power pump, while accurately determining the working state for on-demand water supply, thus enhancing the overall stability and efficiency of the filtration process.
Implementation Method 1
a reverse osmosis membrane filter element configured to separate purified water from concentrated water
Implementation Method 2
the pump unit is configured to selectively pump the raw water in the raw water pipeline to the reverse osmosis filtration unit
Implementation Method 3
a pressure chamber of a water storage tank contains concentrated water flowing out from a reverse osmosis membrane filter element, and inflow and outflow of the concentrated water in the pressure chamber are controlled according to a pipeline pressure in the filtration system
Data Source
AI summary
A reverse osmosis filtration system (100, 100A, 100B, 100C), comprising: a raw water pipeline (L1); a reverse osmosis filtration unit (10, 10A, 10B, 10C) configured to filter raw water supplied by the raw water pipeline (L1); and a faucet (30, 30A, 30B, 30C) connected to the reverse osmosis filtration unit (10, 10A, 10B, 10C), wherein the faucet (30, 30A, 30B, 30C) is operable such that a water outlet (33) of the faucet (30, 30A, 30B, 30C) is selectively in communication with a product water outflow pipeline of the reverse osmosis filtration unit (10, 10A, 10B, 10C). The reverse osmosis filtration system (100, 100A, 100B, 100C) further comprises a pump unit (50, 50A, 50B, 50C) arranged between the raw water pipeline (L1) and the reverse osmosis filtration unit (10, 10A, 10B, 10C), wherein the pump unit (50, 50A, 50B, 50C) is configured to selectively pump the raw water in the raw water pipeline (L1) to the reverse osmosis filtration unit (10, 10A, 10B, 10C) according to a pressure in the product water outflow pipeline. The reverse osmosis filtration system (100, 100A, 100B, 100C) can operate stably even when a pressure in the raw water pipeline (L1) is low, can provide the operation stability of the reverse osmosis filtration system (100, 100A, 100B, 100C), and can realize on-demand water supply for the reverse osmosis filtration unit (10, 10A, 10B, 10C).