Vacuum Suction Head Barriers for Large Debris Pickup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional suction heads for vacuum cleaners are inefficient in picking up larger particles of debris due to gaps that reduce suction efficiency and become less effective under conditions of reduced airflow, such as when the debris collection bag is full or the filter is blocked.
Innovation Solution
A suction head with diverging arms forming a V or U shape, featuring continuous ground-engaging barriers and a permanent gap between them to guide large particles into the suction head, along with air passageways that maintain airflow efficiency even under reduced conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gaps are provided along the leading edge to allow larger particles to pass through, then the ability to pick up large and heavy particles is improved, but the suction efficiency is reduced
Solution Approach 1:
The suction head is divided into multiple arms (typically three arms forming a Y-shape or V-shape), each with its own channel. This segmentation allows the suction head to handle different particle sizes through different paths while maintaining overall suction efficiency.
Solution Approach 2:
The invention introduces a vertical dimension by having channels extend from the free end of the arms downward to the outlet opening. This three-dimensional channel structure allows large particles to be funneled down into the suction path while maintaining efficient airflow, resolving the contradiction between particle size handling and suction efficiency.
2Productivity
If the suction head is designed for high airflow, then it can cope with most debris, but it fails to pick up denser items when airflow is reduced
Solution Approach 1:
Different regions of the suction head have different functions optimized for their specific roles. The arms and channels are designed with specific geometries to guide different types of debris (small particles vs. large dense items) into the suction path, ensuring reliable performance across varying airflow conditions.
Solution Approach 2:
The channel geometry parameters (angle of divergence, channel width, length) are specifically designed to optimize particle guidance under reduced airflow conditions. The channels are configured to create appropriate flow patterns that maintain pickup capability for dense items even when overall airflow is reduced.
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
Effectively collects larger particles and maintains suction efficiency even with reduced airflow, making it suitable for hard surfaces and cordless cleaners.
Implementation Method 1
a flow of air along each channel towards the outlet opening
Implementation Method 2
the first and second barriers being adapted to engage a substantially flat ground surface along the entire length of the first and second barriers
Implementation Method 3
when the suction head is moved forwardly the relatively large particles of debris are urged or roll along the forward edges of the arms towards the gap
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A suction head for a vacuum cleaner comprises a hollow body including a pair of arms (1, 3) which diverge from a predetermined region of the body at an angle less than 180 degrees relative to each other. Each arm is formed with a channel (14) for the passage of air, the channel extending from the free end of the arm to the region of the body from which the arms diverge. An outlet opening (5) is located in the region of the body from which the arms diverge for the passage of air to a vacuum cleaner. A first continuous ground-engaging barrier (21) extends along the region of an inner edge (19) of one of the arms (1) from the free end of the arm to the region of the body from which the arms diverge. A second continuous ground-engaging barrier (21) extends along the region of an inner edge (19) of the other of the arms (3) from the free end of the arm to the region from which the arms diverge. A gap (23) is formed between the first and second barriers (21) in the region from which the arms diverge for the passage of relatively large particles of debris into the suction head. The first and second barriers (21) are adapted to engage a flat ground surface along the entire length of the first and second barriers.