Vacuum Cleaner Nozzle Grooves for Low-Resistance Carpet Pickup
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Solution Overview
Problem
Existing vacuum cleaner nozzles with high dust pick-up levels experience increased motion resistance, making carpet cleaning physically demanding.
Innovation Solution
The vacuum cleaner nozzle features a suction plate with a longitudinal suction opening and sealing edges, along with grooves that allow carpet fibers to partially recover and re-distort, enhancing dust removal without significantly increasing motion resistance, by arranging grooves in front of and behind the suction opening to optimize fiber movement regardless of cleaning direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction force is increased to achieve high dust pick-up level, then dust removal efficiency is improved, but motion resistance increases making the nozzle harder to move
Solution Approach 1:
The suction opening is segmented into multiple zones by introducing grooves that divide it into a first suction zone and a second suction zone. This segmentation allows different regions to serve different functions: one zone optimized for dust pickup while the other zone helps reduce motion resistance, thereby resolving the contradiction between high dust pick-up level and ease of movement.
Solution Approach 2:
Different regions of the suction opening are given different qualities through the groove structure. The first suction zone and second suction zone have distinct characteristics that optimize local performance. This local differentiation enables the nozzle to achieve high dust pick-up in critical areas while maintaining lower overall motion resistance.
2Productivity
If the suction opening is enlarged to increase dust removal capacity, then dust pick-up level is improved, but the structural complexity and motion resistance increase
Solution Approach 1:
The suction opening is divided into multiple zones using grooves, which provides functional complexity without requiring a complete redesign of the suction plate structure. This segmentation approach increases dust removal capacity through optimized airflow distribution while keeping the overall structural complexity manageable.
Solution Approach 2:
The grooves serve multiple functions simultaneously: they segment the suction opening into different zones, guide airflow patterns, and contribute to reducing motion resistance. This multi-functionality allows the structure to achieve enhanced dust removal capacity without proportionally increasing structural complexity.
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 enhances dust removal efficiency while maintaining low motion resistance, allowing for effective carpet cleaning with reduced physical effort.
Implementation Method 1
A vacuum cleaner is a device that uses a suction force generated by a fan unit to create a partial vacuum to suck up objects like dust, particles, fibres, hair etc.
Implementation Method 2
In the area of the groove, the carpet fibers are able to at least partially recover their shape, i.e. the carpet fibers at least partially re-raise. Said shape-recovering causes an increased movement of the carpet fibers which yield in an optimized removal of dust out of the carpet fibers.
Data Source
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AI summary
The invention relates to a vacuum cleaner nozzle (1) comprising a suction plate (2) having an inlet side (2.1) and an outlet side (2.2), said suction plate (2) comprising - an air duct (3), wherein said air duct (3) extends through the suction plate (2) from a suction opening (4) on the inlet side (2.1) to the outlet side (2.2), the suction opening (4) having a longitudinal shape extending with its longitudinal sides transversely to a cleaning direction (CD); - first and second sealing edges (5) for engaging with a surface being cleaned and for at least partly sealing said suction opening (4) against said surface being cleaned, wherein the first and second sealing edges (5) extend along at least a side portion of said suction opening (4) at opposite sides of the suction opening (4), wherein at least one groove (6, 6', 7, 7') extends parallel to the longitudinal sides of the suction opening (4), the groove (6, 6', 7, 7') being formed in the suction plate (2) by a recess in proximity to the suction opening (4) and wherein the least one groove (6, 6', 7, 7') and the suction opening (4) is separated exclusively by the sealing edge (5).