Surface cleaning apparatus
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Solution Overview
Problem
Conventional surface cleaning devices, such as vacuum cleaners, face challenges in effectively removing debris from surfaces due to limitations in suction power, agitator efficiency, and debris separation and collection mechanisms, particularly in small, portable forms.
Innovation Solution
A hand-held surface cleaning apparatus with a base assembly, suction nozzle, hand-held portion, and wand, featuring a suction source, agitator chamber, and a debris separation and collection module, which includes a cyclonic separator and a removable dirt cup for efficient debris collection and easy emptying, along with a headlight array positioned close to the surface for improved illumination and visibility of debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vacuum cleaner is made small and portable, then ease of operation is improved, but suction power is reduced
Solution Approach 1:
The patent employs dynamic elements including a pivoting base assembly that can rotate relative to the upright assembly, and a wand that can be detached and reattached. These dynamic features allow the vacuum to adapt to different cleaning scenarios while maintaining compact storage, resolving the contradiction between portability and cleaning effectiveness.
Solution Approach 2:
The vacuum cleaner is divided into separate modular components: a base assembly with cleaning head, an upright assembly with power source, and a connecting wand. This segmentation allows each component to be optimized independently - the base remains compact for portability while the upright can house sufficient power components, and they connect when needed for effective cleaning.
2Illumination intensity
If the headlight array is positioned close to the surface, then illumination of debris is improved, but the risk of damaging the surface is increased
Solution Approach 1:
The lighting system uses multiple LEDs positioned at different locations on the base assembly, with each LED providing localized illumination to specific areas of the cleaning surface. This allows bright lighting for debris visibility while distributing the physical presence across multiple points rather than concentrating it at a single close point.
Solution Approach 2:
The light acts as an intermediary that allows the user to see debris from a distance without the cleaning head needing to be extremely close to the surface. The illumination extends the user's visual range, enabling effective cleaning while maintaining a safer operational distance between the cleaning head and the surface.
3Productivity
If the cyclonic separator is integrated into the hand-held portion, then debris separation efficiency is improved, but device complexity is increased
Solution Approach 1:
The cyclonic separator, collection container, and motor housing are merged into a single integrated assembly within the hand-held portion. This consolidation achieves efficient debris separation while avoiding the complexity of separate components and connection mechanisms, as the air stream naturally flows through the integrated structure from the base through the separator to the exhaust.
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 apparatus provides effective debris removal and separation, enhanced by adjustable suction power and improved illumination, allowing for efficient cleaning of small areas with ease and visibility of debris, improving cleaning performance and user experience.
Implementation Method 1
a cyclonic separator in fluid communication with the working air path and configured for separating debris from the working airstream
Implementation Method 2
a source of suction in fluid communication with the conduit to draw debris-laden air from the surface to be cleaned and through the nozzle and the conduit to the recovery container
Data Source
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AI summary
A surface cleaning apparatus such as a vacuum cleaner (10) includes a suction source (18), a recovery container, and a base assembly (34) with at least one agitator (26) within an agitator chamber (74). The recovery container (20) can be coupled to a separator assembly (140) configured to remove dirt and debris from working fluid through the surface cleaning apparatus (10). In addition, a user interface (84) can be provided for selective operation of components of the surface cleaning apparatus (10).