Removable Filter Change Display for Dishwasher Safety

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Solution Overview

Problem

Existing table water filters with exchange displays often require the lid to be designed in a way that compromises dishwasher safety, as the exchange display is typically integrated into the lid.

Innovation Solution

The exchange display is designed as a removable module that clips onto the bottom of the water collection container, allowing for easy removal and cleaning, including dishwasher safety, while ensuring the display is only reset when removed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the exchange display is integrated into the lid of the water collection container, then the display is easily accessible and visible, but the lid cannot be placed in a dishwasher

Engineering Contradiction:

ImproveAccessibility of exchange displayVSAvoidDishwasher safety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The exchange display is separated from the water collection container and implemented as an independent, detachable module. This segmentation allows the display to be removed for cleaning while maintaining its functionality and visibility when attached.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The exchange display is extracted from the integrated lid structure and positioned as a separate component that attaches to the bottom of the container. This extraction enables the lid to be dishwasher-safe while the display can be removed and cleaned separately.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the exchange display is designed as a separate removable module, then the water collection container can be cleaned in a dishwasher, but the display must be manually cleaned

Engineering Contradiction:

ImproveDishwasher safetyVSAvoidCleaning convenience

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The system enables self-service cleaning where the user can easily detach the display module for separate cleaning and reattach it. The simple attachment mechanism allows users to perform this maintenance task without tools or complex procedures.

Inventive Principle:

Principle #25Self-service

3Device complexity

If the exchange display is permanently attached to the bottom of the container, then the structure is simplified, but the container cannot be cleaned separately

Engineering Contradiction:

ImproveStructural simplicityVSAvoidCleanability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The display is implemented as a separate module that attaches to the container bottom rather than being permanently integrated. This segmentation maintains relative structural simplicity while enabling separate cleaning of the container.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The attachment between the display and container is designed to be dynamic and reversible rather than fixed. This allows the display to be easily detached for container cleaning and reattached when needed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP3728135B1Table water filtering device with a change display

Publication Date: 2025.04.09 BWT HLDG GMBH

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AI summary

The invention relates to a table water filtering device (1) which comprises a water collecting container (2), a filter cartridge (9) and a change display (7). The change display (7) shows when filter cartridge (9) needs to be changed and can be detachably fastened to the base of the table water filter device (1).