Floor nozzle
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Solution Overview
Problem
Current vacuum cleaner nozzles with flat underplates struggle to efficiently pick up dust from carpets due to reduced air current entry and trapped large-particle dust, resulting in poor vacuum performance and increased movement resistance.
Innovation Solution
The vacuum cleaner nozzle features groove-type auxiliary ducts and convex ribs on its bottom, which reduce air resistance, loosen carpet wool, and ensure negative air pressure, enhancing dust removal capability and reducing movement resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a flat underplate structure is used, then the nozzle structure is simple, but the air volume is reduced and movement resistance increases
Solution Approach 1:
The underplate is segmented into multiple functional elements: groove-type auxiliary ducts (5) that divide the airflow path, convex ribs (4) that segment the carpet contact areas, and a separation rib (6) that divides the primary duct opening. This segmentation increases air volume by creating multiple airflow channels while maintaining structural simplicity.
Solution Approach 2:
The underplate transitions from a traditional two-dimensional flat surface to a three-dimensional structured surface with grooves, ribs, and ducts. This dimensional change creates additional airflow paths and reduces carpet compression area, thereby increasing air volume without significantly complicating the overall nozzle structure.
2Device complexity
If a flat underplate structure is used, then the nozzle structure is simple, but the movement resistance increases
Solution Approach 1:
The underplate surface is segmented into multiple small contact points through convex ribs and grooves, rather than one large flat surface. This segmentation reduces the total contact area with the carpet, thereby reducing movement resistance while keeping the structural design relatively simple.
Solution Approach 2:
Convex ribs with curved surfaces replace flat contact areas. The curved geometry of the convex ribs allows for easier penetration into and movement across carpet fibers, reducing friction and movement resistance compared to flat surfaces.
3Device complexity
If the flat underplate compresses the carpet, then the structure is simple, but the dust removal capability deteriorates
Solution Approach 1:
The primary duct opening is divided by a separation rib into multiple sub-openings, and groove-type auxiliary ducts create additional air intake paths. This segmentation allows air to enter from multiple locations, improving the ability to lift and remove dust particles that would otherwise be trapped by a single flat surface.
Solution Approach 2:
The addition of vertical grooves and raised ribs creates three-dimensional airflow paths that can access dust particles at different depths in the carpet, enhancing dust removal capability beyond what a flat two-dimensional surface could achieve.
4Productivity
If groove-type auxiliary ducts and convex ribs are added, then the air volume increases, but the device complexity increases
Solution Approach 1:
The groove-type auxiliary ducts and convex ribs are integrated into a single underplate component rather than being separate attachments. This merging of functions into one piece achieves the desired air volume increase while minimizing the increase in device complexity.
Solution Approach 2:
The underplate serves multiple functions simultaneously: it provides structural support, creates airflow channels through grooves, reduces carpet compression through convex ribs, and directs air into the primary duct. This multi-functionality achieves complex performance goals without adding proportionally complex structure.
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 design increases air volume and dust removal efficiency, improving the nozzle's ability to pick up dust and reducing movement resistance by 33%, from Grade F to Grade D, while maintaining vacuum degree.
Implementation Method 1
the groove-type auxiliary duct on the bottom of the vacuum cleaner nozzle reduces the region where the nozzle underplate compresses the carpet, correspondingly reducing resistance of the air current in the carpet
Implementation Method 2
the convex rib on the bottom of the vacuum cleaner nozzle will also poke aside the carpet wool on the carpet, comb the compact carpet wool loose
Implementation Method 3
The separation rib disposed at the junction of the primary duct with the groove-type auxiliary duct plays a role in sealing the primary duct opening, and ensuring a negative air pressure at the primary duct opening
Data Source
Figure 1
Figure 2~3
AI summary
The present invention discloses an efficient floor brush, which comprises a brush body, a brush underplate mounted on the bottom of the brush body, and a primary duct disposed in the brush body, the primary duct being provided with a primary duct opening located at the brush underplate, some groove-type auxiliary ducts being formed on the front and rear sides of the primary duct opening on the bottom of the brush underplate, a separation rib being disposed at a junction of the primary duct with the auxiliary duct. This efficient floor brush of the present invention can increase the air volume of the floor brush, thus improving the vacuum efficiency of the floor brush, with the movement resistance of the floor brush on a carpet reduced.