Floor Nozzle False Air Device for Reduced Pushing Force
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Solution Overview
Problem
Existing floor nozzles for suction devices, such as vacuum cleaners, face challenges in balancing increased suction power for better dirt pickup with excessive pushing force, which can lead to increased work effort. Known solutions that introduce false air to reduce suction power often compromise cleaning effectiveness by destroying suction energy.
Innovation Solution
The floor nozzle incorporates a false air device that supplies false air below the suction mouth edge, creating a fluid communication with the suction opening, reducing pushing forces and enhancing cleaning performance by loosening dirt through turbulence, while maintaining suction energy for effective dirt removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If suction power is increased to better pick up dirt, then cleaning performance is improved, but pushing force increases making the nozzle harder to use
Solution Approach 1:
The false air device is divided into multiple outlets arranged in rows across the width of the floor nozzle, with each outlet serving a specific zone. This segmentation allows localized air injection to reduce pushing forces in different areas while maintaining effective suction for dirt pickup.
Solution Approach 2:
False air is introduced at outlets positioned in front of the suction nozzle edge, creating a preliminary air cushion before the nozzle contacts the floor surface. This preliminary action reduces the pushing force required to move the nozzle while maintaining cleaning effectiveness.
2Ease of operation
If false air is introduced behind the suction nozzle to reduce pushing forces, then ease of operation is improved, but cleaning result deteriorates due to loss of suction energy
Solution Approach 1:
Instead of introducing false air behind the suction nozzle as in conventional designs, the false air device introduces air at outlets positioned in front of the suction nozzle edge. This inverted arrangement allows false air to reduce pushing forces while the suction opening remains positioned to effectively capture dirt particles.
Solution Approach 2:
The false air outlets are arranged in rows extending across the width of the floor nozzle, creating a two-dimensional distribution pattern. This spatial arrangement allows false air to be introduced at multiple locations simultaneously, reducing pushing forces across the entire nozzle width while maintaining effective suction.
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 design improves cleaning performance on floor surfaces by reducing pushing forces and enhancing dirt detachment and transport, making the nozzle easier to use without compromising suction power, thus achieving improved cleaning results.
Implementation Method 1
enhancing dirt detachment and transport, making the nozzle easier to use without compromising suction power
Implementation Method 2
a suction opening (4) extending through the suction nozzle (2) below the suction mouth edge (3)
Data Source
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AI summary
The invention relates to a floor nozzle (1) for a suction device, in particular for a vacuum cleaner, for cleaning floor surfaces, comprising: - a suction mouth (2) with at least one suction mouth edge (3) arranged on the floor side, which at least partially surrounds a suction opening (4), - a false air device (5) designed to supply false air to the floor nozzle (1), - wherein, in the operating state of the floor nozzle (1), the false air device (5) is in fluid communication with the suction mouth (2) via the suction opening (4), so that false air from at least one outlet (7) of the false air device (5) below the at least one suction mouth edge (3) flows into the suction opening (4).