Modular Extraction Nozzle Assembly for Focused Carpet Cleaning

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Solution Overview

Problem

Existing carpet extractors lack an efficient and modular design for fluid delivery and recovery systems, which limits their effectiveness in deep cleaning and maintenance, particularly in handling focused treatments and debris separation.

Innovation Solution

A modular extraction cleaner with a fluid delivery system that includes a primary and auxiliary fluid distributor, a modular nozzle/spray unit with an agitator assembly, and a fluid recovery system supported by a base assembly, allowing for effective cleaning fluid delivery and debris extraction, along with a modular design for easy maintenance and component replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If a modular design is implemented with removable nozzle assemblies, then ease of maintenance and component replacement is improved, but device complexity increases due to additional mounting and locking mechanisms

Engineering Contradiction:
Improveease of maintenanceVSAvoiddevice complexity
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The extraction cleaner is divided into modular components including a base assembly, handle assembly, and removable nozzle/spray unit. Each component can be independently maintained or replaced. The nozzle assembly specifically is segmented into a housing, fluid distributors, and extraction nozzle that can be removed as a unit or individually accessed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The nozzle assembly is designed with dynamic mounting characteristics - it can be quickly attached and detached from the base assembly through complementary mounting features and lock assemblies. This dynamic interface allows the system to transition between integrated operation and separated maintenance states.

Inventive Principle:
Principle #15Dynamics

2Reliability

If a lock assembly is provided for selectively coupling the secondary housing to the base assembly, then reliability of component attachment is improved, but ease of operation deteriorates due to additional coupling steps

Engineering Contradiction:
ImprovereliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The lock assembly replaces complex mechanical fastening systems with a simplified coupling mechanism. The lock body is selectively received within retainers through a single motion operation, eliminating the need for multiple fasteners, screws, or complex latching mechanisms while maintaining secure attachment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If multiple fluid distributors are used for focused treatments, then cleaning effectiveness is improved, but device complexity increases due to additional fluid delivery components

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

Solution Approach 1:

The system employs multiple fluid distributors with different functions positioned at specific locations within the nozzle assembly. A primary fluid distributor delivers cleaning fluid for general cleaning, while an auxiliary fluid distributor provides focused treatment for spot cleaning or pre-treatment. Each distributor is optimized for its specific cleaning task.

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 providing focused fluid delivery and effective debris extraction, reducing user effort and improving maintenance accessibility, while ensuring thorough cleaning of surfaces.

Implementation Method 1

a source of suction in fluid communication with the conduit to draw the cleaning fluid from the surface to be cleaned and through the nozzle and the conduit to the recovery tank

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS11607100B2Extraction cleaner
Publication Date: 2023.03.21 BISSELL INC
  • US11607100B2 patent drawing
  • US11607100B2 patent drawing
  • US11607100B2 patent drawing

AI summary

An extraction cleaner for a floor surface includes an extraction nozzle. The extraction nozzle that defines a fluid flow path having an elongated nozzle opening, and includes one or more stiffening elements that stiffens the walls around the nozzle opening to prevent collapsing or deformation of the extraction nozzle during use.