Extractor Cleaning Machine Air Duct for Fluid Collection Efficiency

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Solution Overview

Problem

Extractor cleaning machines face inefficiencies in fluid and dirt collection due to limitations in the design of air ducts connecting recovery tanks and suction nozzles, which affect the overall cleaning performance and fluid separation process.

Innovation Solution

The design includes a base with a suction nozzle and a body coupled to a tank tray, where an air duct is integrated to fluidly couple the recovery tank and suction nozzle, facilitating airflow and fluid separation, and allowing for adjustable positioning and auxiliary tool integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a traditional air duct design is used to connect the recovery tank and suction nozzle, then the structure is simple, but the fluid and dirt collection efficiency is insufficient

Engineering Contradiction:
Improvefluid and dirt collection efficiencyVSAvoidair duct structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air duct is divided into multiple segments including a first air duct portion, a second air duct portion, and a third air duct portion. Each segment serves a specific function in the fluid flow path from the suction nozzle to the recovery tank, allowing optimized design of each section while maintaining overall system efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air duct incorporates a vertical passage that extends upward from the tank tray, creating a three-dimensional flow path. This vertical dimension allows the air duct to bypass obstacles and optimize the flow path from the suction nozzle to the recovery tank inlet, improving collection efficiency without increasing horizontal complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the air duct is integrated with the tank tray, then the fluid separation process is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvefluid separation processVSAvoidair duct integration complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The air duct is integrated with the tank tray to form a unified structure. The air duct portions are coupled to the tank tray in a manner that creates a sealed fluid path, ensuring proper fluid separation while maintaining manufacturability through standardized coupling mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tank tray serves as an intermediary structure that connects the air duct to the recovery tank. This intermediate component facilitates the integration by providing a mounting surface and sealing interface, simplifying the overall manufacturing process while ensuring reliable fluid separation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the suction source is positioned to optimize fluid draw, then the cleaning performance improves, but the device complexity increases

Engineering Contradiction:
Improvesurface cleaning performanceVSAvoidsuction source positioning complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The suction source is positioned to create dynamic fluid flow patterns that optimize cleaning performance. The air duct configuration allows the suction source to effectively draw fluid and dirt from the surface through the suction nozzle and transport it to the recovery tank, with the positioning optimized for maximum suction efficiency.

Inventive Principle:
Principle #15Dynamics

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 configuration enhances the efficiency of fluid and dirt collection, improves surface cleaning performance, and allows for versatile use with various surfaces and tools, optimizing the cleaning process.

Implementation Method 1

a suction source operable to draw fluid and dirt from the surface through the suction nozzle

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 2

an air duct coupled to the tank tray such that the air duct and the tank tray define a passageway that fluidly couples the recovery tank and the suction nozzle

Methodology Applied
Scientific EffectFluid flow through passageway:

Data Source

PatentEP3116370B1Air duct for an extractor cleaning machine
Publication Date: 2021.09.22 TECHTRONIC IND CO LTD
  • EP3116370B1 patent drawingFigure 1
  • EP3116370B1 patent drawingFigure 2~3
  • EP3116370B1 patent drawingFigure 4

AI summary

An extractor cleaning machine that includes a base having a suction nozzle and a body coupled to the base. The extractor cleaning machine also includes a suction source in fluid communication with the suction nozzle. The extractor cleaning machine further includes a recovery tank configured to store fluid and dirt drawn through the suction nozzle, and a tank tray coupled to at least one of the base and the body. The tank tray including a top surface and a bottom surface. The recovery tank is coupled to the tank tray adjacent the top surface. The extractor cleaning machine also includes an air duct coupled to the tank tray adjacent the bottom surface to define a passageway that fluidly couples the recovery tank and the suction nozzle.