Leaf Bag Vacuum Adapter with Screen and Shield to Prevent Blockage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for compacting yard waste, such as fallen leaves, in plastic bags are inefficient and often rely on manual efforts, as the irregular shape and air pockets within the bags hinder effective compression.
Innovation Solution
An adapter device is designed for a vacuum hose that includes a screen and shield to prevent the bag from being sucked in while allowing air to be evacuated, compressing the leaves by reducing the internal volume of the bag through atmospheric pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual compacting methods (hands, feet, squeezing) are used to compress leaves in bags, then some volume reduction is achieved, but the process is labor-intensive and inefficient
Solution Approach 1:
The patent replaces manual mechanical compacting efforts with a vacuum-based system. A vacuum source creates negative pressure that automatically draws air out of the bag, causing leaves to compress together without requiring human hands or feet to physically squeeze them. This substitution of mechanical force with vacuum pressure resolves the contradiction by eliminating manual effort while maintaining high compacting speed.
Solution Approach 2:
The invention uses pneumatic principles by employing a vacuum source to create a pressure differential. The vacuum system generates negative pressure inside the bag, which forces air out and allows atmospheric pressure to compress the leaves. This pneumatic approach enables rapid, automated compacting without manual intervention, directly addressing both the productivity and ease of operation concerns.
2Productivity
If vacuum suction is applied directly to the bag opening, then air is removed efficiently, but the bag and leaves are sucked into the vacuum source causing blockage
Solution Approach 1:
The patent introduces a funnel-shaped adapter as an intermediary component between the bag opening and the vacuum source. This adapter serves as a mediator that allows air to pass through to the vacuum while preventing leaves and the bag from being directly sucked into the vacuum inlet. The funnel geometry maintains strong air suction while the screen and tapered shape block solid material, thus preserving both air removal efficiency and suction stability.
Solution Approach 2:
The adapter incorporates a screen with specific opening sizes that differ from the main funnel opening. The screen provides a local filtering function with smaller apertures that allow air passage but block leaves. This local quality differentiation enables the system to maintain high air removal efficiency at the main opening while preventing blockage at the vacuum interface through the screened region.
3Reliability
If screen openings are made small to block leaves, then leaf blockage is prevented, but air flow is restricted reducing compression speed
Solution Approach 1:
The patent resolves this contradiction by adding a spatial dimension to the solution. Instead of relying solely on small screen openings, the funnel adapter provides a large-volume air passage that runs parallel to the screened region. Air flows through the funnel's internal volume and exits through the screen, while leaves are blocked by the screen. This dimensional approach allows unrestricted air flow to coexist with effective leaf blocking, maintaining both reliability and productivity.
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 adapter device efficiently compresses yard waste in plastic bags by removing air, allowing for significant reduction in volume and space usage within a short time, typically in seconds, without manual effort.
Implementation Method 1
An adapter device for adapting a suction end of a vacuum hose of a vacuum cleaner for suctioning air out of plastic bags
Implementation Method 2
the shield being structured in a manner that is capable of preventing a plastic bag from being sucked by vacuum to the screen and the mouth being sized in a manner that is capable of blocking leaves or other yard waste matted in the bag from being sucked to the screen while allowing air in the bag to flow to the screen
Implementation Method 3
compressing the leaves by reducing the internal volume of the bag through atmospheric pressure
Data Source
AI summary
An adapter device for suctioning air out of plastic bags of a type typically used for containing fallen leaves and other yard waste for disposal comprises a screen that surrounds a space that is connectable in fluid flow relation with the suction end of the vacuum hose, a shield positioned around the screen that is capable of preventing a plastic bag from being sucked by vacuum to the screen. The mouth of the shield is sized for blocking leaves or other yard waste matted in the bag from being sucked to the screen while allowing air in the bag to flow to the screen.