Mineralization Cartridge Proportional Dosing via Pressure Gradient
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Solution Overview
Problem
Existing conduit-connected water filter cartridges are ineffective in mineralizing large volumes of water uniformly and sustainably, particularly for drinking water, leading to inadequate mineral replacement during sporting activities and an unpleasant taste due to low or high mineralization levels.
Innovation Solution
A method and device using a conduit-connected water filter cartridge with a pressure vessel housing, where a main flow of water is mixed with a dosing flow of concentrated salt solution from a storage vessel containing sulfate, chloride, or hydrogencarbonate salts, utilizing a resistance section to create a differential pressure for proportional dosing, ensuring stable mineralization and independent of line pressure fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If granular materials (CaCO3 or MgCo3) are used for mineralization, then the corrosivity of water is reduced and pH is raised, but the dissolution kinetics are very low and only a few mg of Ca or Mg can be dissolved
Solution Approach 1:
The patent changes the physical state of the mineralizing agent from solid granular material to liquid concentrated salt solution. This parameter change enables rapid dissolution and high mineralization capacity while maintaining the beneficial effect of reducing water corrosivity through controlled mineral addition.
Solution Approach 2:
The patent uses a dosing pump to deliver the concentrated salt solution and employs a diffuser to disperse the liquid into fine droplets within the water flow. This hydraulic approach enables efficient mixing and rapid mineralization of large water volumes, overcoming the low dissolution kinetics of granular materials.
2Ease of operation
If ion exchangers are used to release minerals into water, then certain desired minerals can be released in a specific manner, but the overall mineral content in eq./l of the output water remains constant
Solution Approach 1:
The patent extracts the limitation of ion exchangers by not relying on their ion exchange mechanism. Instead, it directly adds concentrated salt solution containing desired minerals (CaCl2, MgCl2, KCl, NaHCO3) to the water, thereby increasing the overall mineral content while maintaining controlled release through the dosing pump system.
3Ease of operation
If weakly mineralized water is produced, then the taste is acceptable, but salts lost through sweat are not replaced and the water is not suitable for sporting activity
Solution Approach 1:
The patent employs a dynamically adjustable dosing system using a dosing pump that can be programmed to deliver varying amounts of concentrated salt solution based on the desired mineralization level. This enables flexible adaptation between weak mineralization for drinking and strong mineralization for sweat replacement during sporting activities.
4Quantity of substance
If high mineralization is achieved with conductivity greater than 1500 μS/cm, then necessary minerals are available for sweat replacement, but the high mineral content can be tasted and the water is perceived as salty
Solution Approach 1:
The dosing pump system allows dynamic adjustment of the salt solution dosage to achieve the precise mineralization level required (conductivity of 1000-2000 μS/cm) that provides sufficient minerals for sweat replacement while remaining below the threshold where water tastes noticeably salty.
5Productivity
If mineralization filters treat large volume flows, then sufficient water can be mineralized for practical use, but the degree of mineralization becomes unstable and inconsistent
Solution Approach 1:
The patent incorporates a feedback mechanism where the actual mineralization level (conductivity) is measured and used to adjust the dosing pump operation. This ensures stable and consistent mineralization degree even when treating large volume flows, as the system automatically compensates for variations in water flow rate and mineralization requirements.
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 solution achieves stable mineralization of water to at least 200 μS/cm, effectively replacing lost minerals during sporting activities while maintaining a pleasant taste, with the dosing ratio remaining consistent despite pressure changes, and minimizing overdosing during startup.
Implementation Method 1
the flow resistance in the main flow is set by means of a resistance section in the main flow, which is arranged upstream of the dosing point in the direction of flow, such that a differential pressure arises between the main flow and the dosing flow
Implementation Method 2
this differential pressure bringing about a volume flow of the dosing flow of the salt solution, through the dosing opening that opens into the main flow, which is substantially proportional to the main flow
Implementation Method 3
a dosing flow of concentrated salt solution is conducted through a dosing conduit... containing a concentrated salt solution formed of sulfate salt, chloride salt and/or hydrogencarbonate salt
Data Source
AI summary
The invention relates to a method for operating a water filter cartridge in a pipe, said water filter cartridge having a housing in the form of a pressure vessel, and an inlet and an outlet for water, characterized in that a main flow of water to which minerals are added is conducted through a main pipe inside the pressure vessel, and a dosing flow of concentrated salt solution is conducted through a dosing pipe, wherein the dosing pipe branches off from the main pipe and passes through a reservoir of constant volume and in which there is a concentrated salt solution consisting of sulphate salt, chloride salt and/or hydrogen carbonate salt, wherein the part of the dosing pipe extending from the reservoir leads into the main flow at a dosing point through a dosing opening with a constant flow cross-section, and wherein a resistance section which is situated upstream of the dosing point in the main flow is used to set the flow resistance in the main flow such that a pressure difference results between the main flow and the dosing flow and causes a volumetric flow rate of the dosing flow of salt solution which is substantially proportional to the main flow, through the dosing opening into the main flow.