Surface cleaning apparatus
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Solution Overview
Problem
Existing multi-surface vacuum cleaners lack an efficient fluid delivery and recovery system that minimizes streaking and dry debris scatter, and often require multiple components like tubing and fittings, increasing manufacturing costs and maintenance complexity.
Innovation Solution
A surface cleaning apparatus with integrated fluid delivery channels between the nozzle housing and cover, a dual wiper configuration to reduce streaking, and a hybrid brushroll for optimized cleaning on various surfaces, along with a visible indicator system for fluid delivery feedback and a storage tray for self-cleaning and drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional tubing and fittings are used for fluid delivery, then the system is easier to manufacture with separate components, but the device complexity and maintenance complexity increase
Solution Approach 1:
The patent integrates the fluid delivery channel directly into the nozzle housing structure, merging what were previously separate components (tubing, fittings, and housing) into a single integrated component. This reduces the number of parts, simplifies assembly, and decreases maintenance complexity while maintaining manufacturability through integral forming processes.
2Device complexity
If fluid delivery channels are integrated between nozzle housing and cover, then device complexity and maintenance complexity are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The nozzle housing is designed with segmented or modular features that allow the fluid delivery channel to be formed as an integral part while maintaining precision through controlled manufacturing processes. The integration is achieved through precision molding or machining of the housing itself, rather than assembling multiple separate components.
3Productivity
If cleaning fluid is delivered to the surface, then cleaning performance is improved, but streaking and dry debris scatter increase without proper fluid management
Solution Approach 1:
The fluid delivery system is designed to distribute cleaning fluid locally and uniformly across the cleaning surface through strategically positioned outlets in the nozzle housing. This localized fluid application ensures optimal wetting of the surface and debris, preventing streaking and scatter while maximizing cleaning effectiveness in each specific area.
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 solution enhances cleaning performance by minimizing streaking and dry debris scatter, reduces manufacturing costs and maintenance complexity, and provides improved visibility and feedback for fluid delivery, while allowing for efficient fluid distribution and debris removal across different surfaces.
Implementation Method 1
a source of suction in fluid communication with the working air conduit to draw the cleaning fluid from the surface to be cleaned and through the nozzle and the working air conduit to the recovery tank
Data Source
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AI summary
A surface cleaning apparatus (10) includes a housing including an upright handle assembly (12) and a base (14) mounted to the handle assembly (12) and adapted for movement across a surface to be cleaned The surface cleaning apparatus (10) is further provided with a fluid delivery system comprising a fluid dispenser (554) and at least one fluid delivery channel (40) forming a portion of a fluid delivery pathway. The fluid delivery channel (40) can be formed by a portion of a suction nozzle assembly (580) on the base (14). A light (517) provided on the base (14) can be configured to illuminate the fluid delivery channel (40) when cleaning fluid is being delivered.