Three-Lip Wiper Assembly for Consistent Vacuum Cleaner Suction Flow
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Solution Overview
Problem
Existing cleaning devices for hard surface vacuum cleaners often struggle to maintain consistent suction flow and streak-free cleaning across various surfaces and user pressures, leading to inefficiencies and reduced user friendliness.
Innovation Solution
The introduction of a third flexible wiper lip between the first and second wiper lips, which spaces them apart and defines a constant suction nozzle opening, along with recesses and tapered designs, ensures consistent suction flow and improved cleaning quality regardless of user pressure or surface angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a third lip is added to space the first and second wiper lips apart, then cleaning quality and suction flow consistency are improved, but device complexity increases
Solution Approach 1:
The wiper assembly is segmented into three distinct lips (first, second, and third lips) where the third lip acts as a spacer to maintain consistent spacing between the first and second wiper lips. This segmentation ensures reliable suction flow consistency while distributing the functional requirements across multiple simple components rather than one complex component.
2Adaptability or versatility
If wiper lips are made flexible to adapt to various surfaces, then adaptability is improved, but manufacturing precision becomes more difficult to maintain
Solution Approach 1:
The wiper lips are designed as flexible components that can deform and adapt to various surface geometries and contact angles (40°-90°). This flexibility allows the cleaning device to maintain effective contact with different surfaces while the simple extruded geometry of each individual lip remains easy to manufacture with consistent dimensions.
3Productivity
If recesses are added to the second wiper lip for liquid collection, then cleaning effectiveness is improved, but device complexity increases
Solution Approach 1:
The second wiper lip features localized recesses (slots) at specific positions along its length, creating local liquid collection zones. This local modification enhances cleaning effectiveness by capturing liquid at critical points without requiring a complete redesign of the entire wiper lip structure, maintaining relative simplicity while improving performance.
4Reliability
If the suction nozzle opening is defined by the third lip, then suction flow consistency is improved, but ease of manufacture decreases
Solution Approach 1:
The suction nozzle geometry is segmented and defined by the position and dimensions of the third lip rather than requiring complex internal structures. The third lip acts as a simple spacer that naturally defines the opening cross-section, maintaining consistent flow conditions while allowing the nozzle to be manufactured using standard extrusion or molding processes for the individual lip components.
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 configuration allows for efficient streak-free cleaning across a wide range of surfaces and user pressures, maintaining consistent suction flow and reducing production costs and handling complexity.
Implementation Method 1
suction flow or consistent flow speeds can be provided for a fluid to be sucked in, in particular for a mixture of liquid and air
Implementation Method 2
liquid can be collected in the region of the recesses. Liquid can be sucked away from below the second wiper lip
Data Source
AI summary
A cleaning device, in particular for a cleaning attachment for a hard surface vacuum cleaner, includes at least a first wiper lip and a second wiper lip. A third lip is arranged between the first and second wiper lips so as to space apart the first and second wiper lips.