Removable Extraction Nozzle and Spray Unit for Carpet Cleaning

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Solution Overview

Problem

Conventional carpet extractors lack a modular and efficient system for delivering cleaning fluid and recovering spent fluid and dirt, which can lead to inadequate cleaning and maintenance challenges.

Innovation Solution

A surface cleaning apparatus with a modular nozzle/spray unit that includes a fluid delivery system for depositing cleaning fluid and a fluid recovery system for removing spent fluid and dirt, featuring a removable modular unit with a primary and auxiliary fluid distributor, and an extraction nozzle integrated with a suction source for effective cleaning and easy maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional non-modular extractor design is used, then the device structure is simple, but the cleaning efficiency and maintenance accessibility are inadequate

Engineering Contradiction:
Improvecleaning efficiencyVSAvoiddevice structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The extractor is divided into modular components including a removable nozzle assembly, fluid distributor system, and recovery tank that can be independently accessed and maintained. This segmentation allows for improved cleaning efficiency through targeted application while maintaining structural simplicity through standardized modular interfaces.

Inventive Principle:
Principle #1Segmentation

2Ease of repair

If a conventional fixed design is used, then the device is easy to manufacture, but the maintenance accessibility is poor

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoiddevice manufacturing
Core Design Contradiction:
Ease of repairVSEase of manufacture

Solution Approach 1:

The fluid distributor and nozzle assembly are designed as extractable modular units that can be removed from the main body for easy maintenance and cleaning. This extraction design provides excellent maintenance accessibility while the standardized connection interfaces keep manufacturing complexity manageable.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If cleaning fluid delivery is not focused, then the device structure is simple, but the stain treatment effectiveness is insufficient

Engineering Contradiction:
Improvestain treatment effectivenessVSAvoidfluid delivery system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The fluid distributor system incorporates adjustable spray patterns and targeted delivery mechanisms that concentrate cleaning fluid precisely where needed on stains. This local quality approach enhances stain treatment effectiveness while the modular design keeps the overall system relatively simple.

Inventive Principle:
Principle #3Local quality

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

The modular design enhances cleaning efficiency by allowing focused treatment of stains and easy access for maintenance, improving the overall cleaning process and user experience.

Implementation Method 1

a suction source in fluid communication with the recovery tank and configured to generate a working airflow through the extraction nozzle and into the recovery tank

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentEP2668883B1Extraction cleaner
Publication Date: 2015.03.04 BISSELL HOMECARE INC
  • EP2668883B1 patent drawingFigure 1
  • EP2668883B1 patent drawingFigure 2
  • EP2668883B1 patent drawingFigure 3

AI summary

An extraction cleaner for a floor surface comprises a fluid delivery system for storing cleaning fluid and delivering the cleaning fluid to the surface to be cleaned and a fluid recovery system for removing the spent cleaning fluid and dirt from the surface to be cleaned and storing the spent cleaning fluid and dirt. The fluid delivery system includes at least one fluid distributor and the fluid recovery system includes an extraction nozzle. The extraction nozzle and the at least one fluid distributor can be simultaneously removed from the extraction cleaner.