Point-of-Use Water Conditioning With Modular Treatment Cartridges

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Solution Overview

Problem

Conventional whole-home water treatment systems are inefficient, costly, and lack flexibility in treating water for specific uses, failing to address the unique needs of secondary water applications in residential settings, and require significant installation and maintenance efforts.

Innovation Solution

Implementing point-of-use water treatment devices with modular infrastructure that allow selective treatment of water streams at specific points of use, using swappable cartridges for customizable treatments such as pH modification, mineralization, or carbonation, and incorporating sensors for dynamic water management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional whole-home water treatment systems are implemented, then water treatment coverage is improved, but system complexity and installation cost increase significantly

Engineering Contradiction:
Improvewater treatment coverageVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the water treatment system into multiple point-of-use devices distributed throughout the home, each handling specific water streams independently. This segmentation replaces the centralized whole-home system, reducing overall system complexity while maintaining comprehensive treatment coverage through modular, localized units.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts the water treatment function from the centralized main water line and relocates it to individual point-of-use devices. Each device independently treats water at its specific location, eliminating the need for complex whole-home treatment infrastructure while achieving the same treatment coverage.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If conventional whole-home water treatment systems are implemented, then comprehensive water treatment is achieved, but installation and maintenance costs increase

Engineering Contradiction:
Improvewater treatment coverageVSAvoidinstallation and maintenance cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

By segmenting the treatment system into independent point-of-use devices, each unit can be manufactured as a standardized, cost-effective module. This eliminates the need for expensive custom whole-home system installation and allows for simpler, more affordable maintenance of individual units rather than complex system-wide service.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The point-of-use devices are designed to be easily installed by end-users without requiring professional plumbing infrastructure changes. The devices connect to existing water lines through simple interfaces, enabling self-service installation and reducing professional installation costs while maintaining comprehensive treatment coverage.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If conventional water treatment systems treat all water uniformly, then treatment consistency is improved, but treatment efficiency for specific uses decreases

Engineering Contradiction:
Improvetreatment consistencyVSAvoidtreatment efficiency
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

Each point-of-use device is configured to treat water according to the specific requirements of its location and intended use. For example, bathroom devices may focus on different parameters than kitchen devices, allowing treatment optimization for each application while maintaining consistency within each localized treatment stream.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adapts treatment parameters based on the specific water stream and intended use. Each point-of-use device can adjust its treatment process in real-time based on water quality sensors and usage patterns, improving treatment efficiency for specific applications while maintaining overall system consistency through centralized control protocols.

Inventive Principle:
Principle #15Dynamics

4Reliability

If conventional water treatment systems are implemented, then water quality improvement is achieved, but flexibility for different water uses is reduced

Engineering Contradiction:
Improvewater qualityVSAvoidflexibility for different uses
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

Each point-of-use device can be independently configured to deliver water quality optimized for its specific application. Bathroom devices may prioritize different quality parameters than kitchen or garden devices, allowing each location to receive water tailored to its needs while maintaining overall system reliability through standardized treatment protocols.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4314422B1System and method for point of use water modification
Publication Date: 2026.03.25 PROCTER & GAMBLE CO
  • EP4314422B1 patent drawingFigure 1
  • EP4314422B1 patent drawingFigure 2
  • EP4314422B1 patent drawingFigure 3~4

AI summary

A water use management system may be installed in a setting that contains a primary infrastructure for water use to provide an alternate, modular infrastructure for water use. Fresh water used at various points of use, such as a shower or sink, may be modified by a point of use water conditioner. Water may be modified at the point of use based upon pre-configured routines or manual user selections. Treatments performed on the water may include quality treatments, such as modifying the pH or mineral content, and may also include experience treatments, such as the addition of scents, colors, carbonation, or health and beauty supplements. Additives used during treatment are provided in cartridges that may be inserted and removed from the water conditioner. Cartridges may self-identify when inserted, to aid in compatibility and usability determinations and recycling/recertification processes.