Pool Water Filter With Adjustable Chlorine Bypass Dosing

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Solution Overview

Problem

Existing methods for chlorinating swimming pool water are either uneven in distribution, impractical for dosage adjustment, or require complex and costly integration into the filter system, posing challenges for small to medium-sized pools.

Innovation Solution

A device combining a filter container with a disinfection chamber and a distribution valve that directs a portion of incoming water through a disinfection chamber containing chlorine tablets, allowing adjustable mixing ratios of treated and untreated water to ensure precise chlorination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chlorine tablets are placed in a floating dispenser, then chlorine is continuously released into the pool water, but the chlorine distribution becomes relatively uneven throughout the water

Engineering Contradiction:
Improvecontinuous chlorine releaseVSAvoidchlorine distribution uniformity
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The device segments the water flow into multiple paths: part of the water flows through the disinfection chamber where chlorine tablets are placed, while another part bypasses it. This segmentation allows controlled chlorination of only the necessary portion of water, ensuring even distribution throughout the pool while maintaining continuous chlorine release.

Inventive Principle:
Principle #1Segmentation

2Reliability

If chlorine tablets are added directly to the fill water via a surface skimmer, then the chlorine-enriched water flows back into the pool via return jets, but the chlorine tablets dissolve even when the pool filter isn't running, causing heavy exposure of skimmer water to aggressive chlorine

Engineering Contradiction:
Improvechlorine dosing effectivenessVSAvoidskimmer water exposure to aggressive chlorine
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device performs preliminary action by providing a bypass path that allows water to flow through the disinfection chamber only when the filter is running and water is actively circulating. When the filter is off, no water flows through the chamber, preventing unnecessary chlorine dissolution and protecting the skimmer from aggressive chlorine exposure.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If a chlorine dosing system is integrated into the filter system, then continuous and finely dosable chlorination is achieved, but construction effort and costs increase

Engineering Contradiction:
Improvechlorine dosing precisionVSAvoidfilter system integration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The device merges the chlorine dosing function with the existing filter system by integrating the disinfection chamber into the filter housing. The distribution valve is incorporated into the filter's existing flow control mechanism, allowing precise chlorine dosing without requiring a separate dosing system, thereby reducing construction effort and costs.

Inventive Principle:
Principle #5Merging (Combining)

4Quantity of substance

If the distribution valve directs more water through the disinfection chamber, then higher chlorine dosage is achieved, but the risk of excessive chlorine buildup increases

Engineering Contradiction:
Improvechlorine dosage amountVSAvoidexcessive chlorine buildup
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The device incorporates feedback through the distribution valve that responds to water flow conditions. When the filter is running, water flows through the disinfection chamber and chlorine is dosed appropriately. When the filter stops, flow through the chamber stops, preventing excessive chlorine buildup. This automatic feedback mechanism ensures safe chlorine dosage levels.

Inventive Principle:
Principle #23Feedback

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

Provides a simple, cost-effective, and precise method for continuously dosing chlorine in pool water, ensuring even distribution and avoiding excessive chlorine buildup, suitable for small to medium-sized pools.

Implementation Method 1

Filtration plays a major role in water treatment; it is a mechanical cleaning process that captures impurities and adsorbs them in a filter medium.

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

Solid chlorine products are available as chlorinating agents, both in granular and tablet form. These stabilized chlorine products have the advantage of being formulated to dissolve quickly or slowly

Methodology Applied
Scientific EffectDissolution: Solvation

Implementation Method 3

as a strong oxidizing agent, chlorine breaks down oxidizable organic contaminants dissolved in the water

Methodology Applied
Scientific EffectOxidation: Oxidation

Data Source

PatentEP4151603B1Device for treating the water in swimming pools
Publication Date: 2026.03.11 T I P TECHN IND PROD
  • EP4151603B1 patent drawingFigure 1
  • EP4151603B1 patent drawingFigure 2
  • EP4151603B1 patent drawingFigure 3

AI summary

A device for treating the fill water of swimming pools comprises a filter vessel (10) with a filter chamber (14) for a filter medium, an openable lid (13), an inlet (16) for the raw water to be treated, and an outlet (17) for the treated water. Inside the filter vessel (10) is a disinfection chamber (20) for holding a solid, water-soluble disinfectant. A portion of the raw water flows through the disinfection chamber (20). The incoming raw water is divided by a distribution valve (30) into a first partial flow that flows through the disinfection chamber (20) and a second partial flow that flows directly into the filter chamber (14). The distribution valve (30) has a movable shut-off element to adjust the ratio between the two partial flows.The device not only filters the pool's fill water, but also disinfects it reliably, especially through continuous and finely dosed chlorination.