Vacuum Cleaner Nozzle V-Shaped Scraper for Large Waste and Wall Access
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Solution Overview
Problem
Existing vacuum cleaner nozzles face issues with suction efficiency due to accumulation of large debris, which affects the suction of both large waste and small particles like dust, and have a bulky design making it difficult to clean along walls or plinths.
Innovation Solution
A vacuum cleaner nozzle with a front scraping member featuring elongated branches inclined at an angle of 165° to 178°, including lateral passage openings and notched zones, to direct large waste towards a central passage while minimizing accumulation and frontal size, ensuring effective suction of both large and small debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the angle of inclination between the first and second scraping branches is increased (e.g., 135°), then large waste can be rapidly directed towards the central passage opening, but waste accumulation occurs at the central passage opening and the nozzle requires large frontal space
Solution Approach 1:
The patent changes the angle of inclination parameter from the conventional 135° to a narrower range of 150°-170°. This parameter modification optimizes the balance between directing large waste efficiently toward the central passage opening and preventing waste accumulation, while also reducing the frontal space requirement of the nozzle.
2Productivity
If the central passage opening width is increased to prevent waste accumulation, then large waste suction is improved, but suction losses occur for very small waste such as dust or flour
Solution Approach 1:
The patent introduces lateral passage openings in addition to the central passage opening, creating a multi-channel suction system. The central passage maintains a moderate width suitable for small particles, while the lateral passages handle large waste, thus preventing waste accumulation without causing suction losses for dust and flour.
3Productivity
If the angle of inclination is 135° to achieve rapid waste movement, then large waste is efficiently channeled, but the nozzle has large frontal space requirement making it difficult to clean along walls
Solution Approach 1:
By reducing the angle of inclination between the scraping branches to 150°-170°, the patent narrows the frontal profile of the nozzle while maintaining its ability to direct waste effectively toward the suction channel, thereby improving accessibility for cleaning along walls and baseboards.
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 suction efficiency by preventing waste accumulation, maintaining effective suction of large waste like rice grains or lentils, and allows for easier cleaning along surfaces like walls and plinths without compromising suction of small particles.
Implementation Method 1
a suction channel opening into the lower face of the sole... allow suction of waste through the central passage opening and in the direction of the suction channel
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The vacuum cleaner nozzle (2) includes a sole (3) having a lower face (4) and a suction channel (5) opening into the lower face (4);and a front scraping member (13) located at the front of a front edge of the suction channel (5) and delimiting at least in part a central passage opening (16) which is fluidly connected to the suction channel (5), the front scraping member (13) having an overall V-shape with an apex oriented towards a central part of the suction channel (5), the front scraping member (13) comprising a first scraping branch (14) extending along a first extension direction (De1) and a second scraping branch (15) extending along a second extension direction (De2), the first and second scraping branches (14, 15) being configured to direct waste, coming into contact with the front scraping member (13) during a forward movement of the vacuum nozzle (2), towards the central passage opening (16).