Extractor cleaning machine

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Solution Overview

Problem

Extractor cleaning machines lack an efficient self-cleaning mechanism, leading to residual dirt and cleaning fluid accumulation on the hose and accessories, which can hinder performance and require manual cleaning.

Innovation Solution

The integration of a cleaning chamber with a valve system and a mode valve assembly that allows for the selective introduction of cleaning fluid to flush and sanitize the hose and accessories, combined with a suction mechanism to draw out dirt and fluid, enabling automatic cleaning of the extractor's components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If manual cleaning is used for hose and accessories, then cleaning can be performed, but it requires time and labor that could be spent on customer service

Engineering Contradiction:
Improvetime for manual cleaningVSAvoidease of maintenance
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The extractor is equipped with a self-cleaning system that automatically cleans the hose and accessories using a cleaning chamber, cleaning fluid, and suction mechanism, eliminating the need for manual cleaning by operators

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The self-cleaning system performs cleaning operations automatically after use, preparing the components for the next use without requiring manual intervention, thus saving time and maintaining readiness

Inventive Principle:
Principle #10Preliminary action

2Extent of automation

If self-cleaning mechanism is added to the extractor, then automatic cleaning is achieved, but device complexity increases

Engineering Contradiction:
Improveautomatic cleaning capabilityVSAvoidstructure complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The self-cleaning system is integrated into the existing extractor structure by combining the cleaning chamber, valve system, and suction mechanism with the main body, rather than adding separate independent systems

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The suction mechanism serves dual purposes: it functions during normal extraction operations and also powers the self-cleaning process by drawing cleaning fluid through the hose and accessories

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

3Reliability

If cleaning fluid is introduced through valve system, then thorough cleaning is achieved, but risk of fluid leakage increases

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidfluid leakage risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The valve system includes a mode valve assembly that controls and monitors the introduction of cleaning fluid, ensuring proper flow management and preventing over-pressurization or leakage

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The cleaning chamber acts as an intermediary containment space that safely introduces cleaning fluid into the system, controlling its flow through the hose and accessories before discharge

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This solution allows for effective self-cleaning of the extractor's components, maintaining performance and reducing manual maintenance by ensuring the hose and accessories are thoroughly cleaned and sanitized, preventing dirt and fluid accumulation.

Implementation Method 1

The suction fan generates a vacuum force that draws in fluid, dirt, or waste from the surface being cleaned

Methodology Applied
Scientific EffectVacuum force: Pressure Gradient

Implementation Method 2

a fluid distribution system, an agitator brush, a pump

Methodology Applied
Scientific EffectFluid pressure: Pressure Gradient

Implementation Method 3

allows for the selective introduction of cleaning fluid to flush and sanitize the hose and accessories

Methodology Applied
Scientific EffectFlushing: Fluid Spray

Data Source

PatentEP3373790B1Extractor cleaning machine
Publication Date: 2019.06.12 TECHTRONIC FLOOR CARE TECH LTD
  • EP3373790B1 patent drawingFigure 1
  • EP3373790B1 patent drawingFigure 2
  • EP3373790B1 patent drawingFigure 3

AI summary

An extractor (20) including a housing (22), a suction source (29) disposed within the housing (22), and a suction nozzle (34) in communication with the suction source (29) and movable relative to the housing (22). The extractor (20) also includes a recovery tank (26) carried by the housing (22), and the suction source (29) is in communication with the recovery tank (26) for drawing fluid through the suction nozzle (34) and storing the drawn fluid in the recovery tank (26). A cleaning chamber (68) disposed on the housing (22) receives a portion of the suction nozzle (34), and the cleaning chamber (68) is configured to selectively receive a fluid along a fluid flow path (70) in communication with the cleaning chamber (68).