Water Softener Brine Tank Fill Time Adjustment
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Solution Overview
Problem
Water softeners often underdose due to the slower-than-expected dissolution rate of salt in the brine solution, leading to inadequate brine saturation, especially in smaller systems where regeneration times are shorter and salt doses are lower.
Innovation Solution
A method to adjust the fill time of the brine tank by calculating a non-adjusted fill time based on the actual salt dose requested, empirically deriving a multiplier factor from a saturation curve, and multiplying the fill time by this factor to ensure the correct salt dose is achieved, accounting for lower-than-100% saturated brine concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the fill time is reduced to speed up regeneration, then productivity is improved, but the salt dissolution is insufficient leading to lower brine saturation
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing saturation curves and multiplier factors before the regeneration process. The system determines the appropriate multiplier based on the desired salt dose and applies it to the fill time calculation, ensuring sufficient dissolution time is built into the regimen before regeneration begins. This allows the system to maintain reliable brine saturation while operating at optimized speeds.
2Device complexity
If the salt dose is reduced for smaller systems, then device complexity is reduced, but brine saturation becomes insufficient due to shorter regeneration times
Solution Approach 1:
The patent applies parameter changes by introducing a multiplier factor that adjusts the fill time based on the desired salt dose and saturation requirements. Instead of changing the physical size or complexity of the system, the solution modifies the temporal parameter (fill time) through calculated multipliers derived from saturation curves. This allows smaller systems to achieve proper brine saturation by extending the fill phase proportionally, without increasing device complexity.
3Reliability
If the fill time is extended to ensure salt dissolution, then brine saturation is improved, but productivity decreases due to longer regeneration cycles
Solution Approach 1:
The patent applies feedback by using empirically determined saturation curves that show the relationship between fill time, salt dose, and brine saturation. The system calculates the appropriate multiplier factor based on the desired salt dose and feedback from the saturation curve data. This feedback mechanism allows the system to determine the minimum necessary fill time to achieve target saturation levels, optimizing the balance between reliability and productivity without unnecessary extensions of the fill phase.
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 ensures the water softener receives the correct salt dose, maintaining optimal capacity and reducing capacity reduction due to lower brine concentration, thereby extending the resin's efficiency and softening performance.
Implementation Method 1
the slower-than-expected dissolution rate of salt in the brine solution
Implementation Method 2
Water softening is an ion exchange technique used for removing calcium and magnesium ions
Data Source
AI summary
A process of analytically determining the adjusted fill time for a brine tank based on non-adjusted fill time and an analytically derived multiplier factor, in order to compensate for brine saturation. Calculating a non-adjusted fill time as a function of actual salt dose requested; determining a multiplier factor (MF) for the non-adjusted fill time utilizing an empirically generated fill time curve; and calculating the fill time as a product of the non-adjusted fill time and the multiplier factor for a given salt dose, such that a water softener system can be provided with extra water to account for a brine concentration lower than 100% saturated brine.