Vacuum Cleaner Nozzle with Offset Ledges for Low-Power Dust Pick-Up
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Solution Overview
Problem
Existing vacuum cleaner nozzles face challenges in maintaining high dust pick-up efficiency with low motor power, requiring adjustments to other parameters to maintain suction efficiency and dust pick-up rate.
Innovation Solution
The vacuum cleaner nozzle design features offset ledges with protruding elements that facilitate dust and debris collection and release, allowing efficient browsing of carpet strands and surfaces, even with low-powered motors, by directing airflow and interacting with surfaces during forward and backward movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If motor power is reduced, then energy consumption is lowered, but dust pick-up efficiency deteriorates
Solution Approach 1:
The invention changes the geometric parameters of the nozzle by introducing offset ledges with protruding elements that extend into the flow channel. These structural modifications alter airflow patterns and increase turbulence, enhancing dust pickup efficiency without requiring increased motor power
Solution Approach 2:
The nozzle surface is segmented into multiple ledges at different offsets from the rim surface. Each ledge creates distinct airflow zones and turbulence patterns, allowing the system to maintain effective dust pickup with lower motor power by optimizing local flow characteristics
2Use of energy by stationary object
If motor power is reduced, then operating cost is reduced, but suction efficiency deteriorates
Solution Approach 1:
The nozzle geometry is modified with offset ledges that create enhanced turbulence and airflow mixing. This parameter change allows the system to maintain reliable suction efficiency at lower operating costs by improving aerodynamic performance
Solution Approach 2:
The invention utilizes pneumatic principles by designing ledges that manipulate air flow patterns through the nozzle. The offset ledges create vortexes and turbulence that enhance dust pickup, allowing lower motor power while maintaining suction efficiency
3Productivity
If protruding elements are added to ledges, then dust pick-up efficiency is improved, but device complexity increases
Solution Approach 1:
The invention modifies the nozzle structure by adding protruding elements to offset ledges, changing geometric parameters to enhance dust pickup. While this increases structural complexity, the elements are integrated into the nozzle body in a way that maintains manufacturing feasibility
Solution Approach 2:
The ledges are positioned at different offsets from the rim surface, creating multiple dimensional layers within the nozzle structure. This dimensional arrangement enhances dust pickup efficiency by creating varied airflow paths without requiring excessive 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 pick-up efficiency, particularly on carpets, by loosening and collecting debris effectively, even with motors less than 1000W, improving overall cleaning performance without increasing motor power.
Implementation Method 1
The protruding element may direct at least a part of the air flow, dust and debris into the flow channel which leads to the vacuum cleaner
Implementation Method 2
The vacuum cleaner normally comprises a motor which is configured to build up a low pressure within the vacuum cleaner and due to the low pressure caused by the motor, air is drawn through the vacuum cleaner nozzle and the hose
Data Source
Figure 1~2
Figure 3~5
Figure 6~9
AI summary
A vacuum cleaner nozzle (1) and a vacuum cleaner (50) are provided. The nozzle (1) comprises a rim (3) with a first rim surface (5) extending between an inner first rim surface edge (5a) and an outer first rim surface edge (5b) in a first plane (7) and a second rim surface (9) extending between an inner second rim surface edge (9a) and an outer second rim surface edge (9b) in a second plane (11). The first plane (7) intersects the second plane (11) in a blunt angle (α). The nozzle (1) also comprises a first ledge (13), arranged offset from the first rim surface (5). The first ledge (13) comprises a first protruding element (15) which protrudes towards the first plane (7) between the inner first rim surface edge (5a) and the outer first rim surface edge (5b).