Water Filter Cartridge With Concentric Outlets for Hot and Cold Flow

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Solution Overview

Problem

Existing water processing appliances face challenges in efficiently supplying water for both cold and hot processing while minimizing limescale deposits, which affect machine efficiency and service life, and require complex and unreliable conduit alignment during refilling.

Innovation Solution

A water filter cartridge with two concentrically arranged outlets for separate cold and hot water flows, incorporating a descaling agent in the hot water channel, and a single connecting element with movable outlets for simplified and reliable water conduit sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate conduit connections are provided for cold and hot water processing, then water supply reliability is improved, but device complexity and alignment difficulty increase

Engineering Contradiction:
Improvewater supply reliabilityVSAvoidconduit connection complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges two separate conduit connections into a single connecting element that provides both cold and hot water outlets. This single connecting element integrates multiple functions (cold water supply, hot water supply, and descaling agent delivery) while maintaining separate internal flow channels, thereby reducing alignment complexity during refilling while ensuring reliable water supply for both processing types

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent segments the internal flow channels within the single connecting element into separate pathways for cold water and hot water. This segmentation allows independent control and separation of water flows while maintaining a unified external connection interface, resolving the contradiction between separate conduit requirements and connection simplicity

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If multiple separate conduits are used for water supply, then water flow separation is improved, but sealing reliability and refilling ease deteriorate

Engineering Contradiction:
Improvewater flow separationVSAvoidrefilling ease
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines multiple sealing interfaces into a single sealing location on the connecting element. The single connecting element provides multiple water outlets (cold water, hot water, descaling agent) while requiring sealing at only one interface with the water tank, significantly improving refilling ease and sealing reliability while maintaining water flow separation through internal channel design

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If a single connecting element is used for multiple water flows, then refilling simplicity is improved, but water flow separation and processing reliability worsen

Engineering Contradiction:
Improverefilling simplicityVSAvoidwater flow separation reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent segments the internal structure of the single connecting element into separate flow channels for cold water, hot water, and descaling agent delivery. This internal segmentation ensures reliable water flow separation and prevents cross-contamination between different water types while maintaining the external simplicity of a single connecting element for refilling operations

Inventive Principle:
Principle #1Segmentation

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

Ensures efficient and reliable water supply for both cold and hot processing, reducing limescale deposits and simplifying the refilling process by minimizing water discharge and ensuring secure conduit alignment.

Implementation Method 1

a first flow channel or flow path through the water filter cartridge, which is provided for feeding the subsequent hot water processing in the machine, may accordingly comprise a filter chamber with a descaling agent, which in particular may contain an ion exchanger, through which the water to be processed flows in order to avoid such precipitates and limescale deposits

Methodology Applied
Scientific EffectChemical reaction: Chemical Bonding

Implementation Method 2

In order to make the action of the filter material as useful as possible for the hot water processing, therefore, a first separate flow channel through the water filter cartridge is provided for this purpose

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS12427450B2Water tank with tank outlet valve and water filter cartridge with two water filter cartridge outlets which are arranged concentrically to one another
Publication Date: 2025.09.30 AQUIS WASSER LUFT SYST GMBH LINDAU ZWEIGNIEDERLASSUNG REBSTEIN
  • US12427450B2 patent drawing
  • US12427450B2 patent drawing
  • US12427450B2 patent drawing

AI summary

The invention relates to a water tank (1) and a water filter cartridge (2) where the water filter cartridge (2) has two different water filter cartridge outlets connected to two different filter treatment sections in a single filter cartridge housing to provide for the different treatment of water received from a common inlet. More particularly, the new filter can treat hot water separately from cold water and discharge the separately treated water from the which can be arranged concentrically to one another.