Drum-Based Floor Cloth Cleaning Device for Automated Mop Maintenance

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Solution Overview

Problem

Automatic floor cleaners face a reduction in cleaning effectiveness due to mop saturation, requiring frequent user intervention for mop replacement, which compromises their automated operation.

Innovation Solution

A cleaning device with a radially water-permeable drum and a control system that automatically transfers and reattaches a floor cloth to the floor cleaner, allowing for continuous cleaning without manual intervention, using a moistening device to flush dirt and a gripping mechanism to secure the cloth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the mop is operated for an extended period, then the floor cleaner can clean larger areas, but the mop becomes saturated with dirt and cleaning effectiveness is reduced

Engineering Contradiction:
Improvefloor area cleanedVSAvoidcleaning effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The cleaning device enables the floor cleaner to automatically clean its own floor cloth without external intervention. The drum-based mechanism with gripping elements automatically removes, cleans, and reattaches the floor cloth, allowing the system to maintain cleaning effectiveness while continuously operating over larger areas.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system automatically discards the soiled floor cloth from the floor cleaner, cleans it using the drum and moistening device, and recovers it by reattaching to the floor cleaner. This cycle allows continuous operation without manual intervention while maintaining cleaning performance.

Inventive Principle:
Principle #34Discarding and recovering

2Reliability

If the mop is manually cleaned or replaced, then cleaning effectiveness is restored, but user intervention is required which compromises automated operation

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidautomatic cleaning operation
Core Design Contradiction:
ReliabilityVSExtent of automation

Solution Approach 1:

The cleaning device automates the entire floor cloth maintenance process. The control device coordinates the drum rotation, gripping element engagement, and moistening device operation to automatically clean the floor cloth, eliminating the need for manual intervention and preserving the automated nature of the floor cleaner.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The cleaning device acts as an intermediary system between the floor cleaner and the floor cloth. It provides automated cleaning functionality that bridges the gap between the floor cleaner's operation and the floor cloth's maintenance needs, allowing both to work together without direct user involvement.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Extent of automation

If a drum-based automatic cleaning system is implemented, then user intervention is eliminated, but device complexity increases

Engineering Contradiction:
Improveautomatic floor cloth cleaningVSAvoidcleaning device structure
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The drum serves multiple functions: it acts as a cleaning surface, a storage spool for the floor cloth, and a mechanism for transferring the cloth between the cleaning device and the floor cleaner. The gripping elements perform both attachment and detachment functions. This multi-functionality reduces the need for separate components, managing complexity while achieving automation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The cleaning device merges the functions of floor cloth removal, cleaning, drying, and reattachment into a single integrated system. The drum combines cleaning, storage, and transfer functions, while the moistening device integrates washing and drying capabilities. This consolidation achieves high automation while controlling overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables unattended cleaning of larger areas by automatically cleaning and reusing the floor cloth, reducing environmental impact and maintaining cleaning effectiveness without user intervention.

Implementation Method 1

a radially water-permeable drum (205) adapted to receive the floor cloth (135) on its outer surface

Methodology Applied
Scientific EffectPermeation: Permeation

Implementation Method 2

The floor cloth can be attached to the floor cleaner using a hook-and-loop fastener, for example

Methodology Applied
Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentEP4070711B1Device for cleaning a floor cloth
Publication Date: 2024.05.08 BSH HAUSGERATE GMBH
  • EP4070711B1 patent drawingFigure 1
  • EP4070711B1 patent drawingFigure 2
  • EP4070711B1 patent drawingFigure 3

AI summary

A cleaning device for cleaning a floor cloth for an automatic floor cleaner comprises a radially water-permeable drum designed to receive the floor cloth on its outer surface; a moistening device for the floor cloth attached to the drum; and a control device for controlling the drum such that the floor cloth is pulled off or attached to a floor cleaner moving over the drum.