Extractor Air Duct Layout for Fluid Separation and Collection

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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, which affect the overall cleaning performance and fluid separation process.

Innovation Solution

The extractor cleaning machine incorporates a movable base with a suction nozzle, a recovery tank, and an air duct system that fluidly connects the tank and nozzle, utilizing a tank tray and air duct with specific apertures and a nonlinear central axis to facilitate airflow and fluid separation, enhancing the collection and separation of cleaning solutions and dirt.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional air duct design is used, then the structure is simple, but the fluid and dirt collection efficiency is poor

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 body portion, a tank tray portion, and a recovery tank portion, each with specific functions. The body portion has a nonlinear central axis for airflow, the tank tray portion provides structural support and fluid passage, and the recovery tank portion collects separated fluid and dirt, allowing efficient collection without excessive complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air duct transitions from a simple linear structure to a three-dimensional complex shape with a nonlinear central axis in the body portion and integrated tank tray features. This dimensional complexity enables improved airflow patterns and separation efficiency while maintaining a unified duct structure

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

2Reliability

If the air duct is coupled to the tank tray, then fluid separation is improved, but the device complexity increases

Engineering Contradiction:
Improvefluid separation effectivenessVSAvoidair duct and tank tray integration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The air duct is coupled to the tank tray to integrate the airflow path with the fluid collection system. The tank tray portion of the air duct serves dual functions as both an air passage and a support structure for the recovery tank, improving fluid separation while consolidating components

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tank tray portion of the air duct serves multiple functions: it provides structural support for the recovery tank, creates a fluid passage between the suction nozzle and recovery tank, and contributes to the overall airflow dynamics. This multi-functionality improves separation effectiveness without adding separate dedicated components

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

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 design improves the efficiency of fluid and dirt collection, allowing for effective separation and discharge of cleaning solutions, enhancing the cleaning performance and surface cleanliness.

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

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

Methodology Applied
Scientific EffectAirflow: Convection

Data Source

PatentUS9138119B1Air duct for an extractor cleaning machine
Publication Date: 2015.09.22 TECHTRONIC IND CO LTD
  • US9138119B1 patent drawing
  • US9138119B1 patent drawing
  • US9138119B1 patent drawing

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.