Vacuum Adapter with Screen and Shield for Leaf Bag Compression
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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 lead to suboptimal space utilization.
Innovation Solution
An adapter device for vacuum cleaners that includes a screen and shield to allow air to be suctioned out of plastic bags, compressing the contents by reducing internal pressure, while preventing the bag material and larger debris from being drawn into the vacuum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual compacting methods (hands, feet, squeezing) are used to compress leaves in bags, then some space reduction is achieved, but the compaction efficiency is low and labor-intensive
Solution Approach 1:
The patent replaces manual mechanical compaction (hands, feet, squeezing) with a vacuum system that uses pneumatic pressure differential to compress leaves. The vacuum compressor creates negative pressure that draws air out of the bag, causing leaves to compact automatically without manual intervention, thereby dramatically improving compaction efficiency and reducing time required.
Solution Approach 2:
The invention employs pneumatic principles by using a vacuum compressor to create a pressure differential. The vacuum system removes air from the bag through a valve mechanism, and the resulting pressure difference causes the leaves to collapse and compact naturally, replacing manual mechanical compression with a pneumatic-based system.
2Productivity
If vacuum suction is applied directly to the bag opening without protection, then air is effectively removed from the bag for compression, but leaves and debris are sucked into the vacuum system causing clogs
Solution Approach 1:
The patent introduces a protective cage or screen as an intermediary component between the bag opening and the vacuum suction inlet. This intermediary structure allows air to pass through while blocking leaves and debris, enabling effective air removal without causing clogs in the vacuum system, thus maintaining both productivity and reliability.
3Productivity
If the vacuum suction inlet is positioned close to the bag opening, then air is efficiently drawn out, but the bag material and leaves are drawn into the suction system
Solution Approach 1:
The protective cage acts as an intermediary barrier positioned at the suction inlet, allowing the vacuum to operate close to the bag opening for efficient air removal while preventing leaves and bag material from being drawn into the suction system. The cage structure permits airflow but blocks solid debris.
Solution Approach 2:
The vacuum inlet design incorporates local quality differentiation by creating a protected zone at the suction inlet with the protective cage, while the rest of the system maintains open airflow paths. This localized protection allows efficient suction while preventing debris ingestion at the critical inlet area.
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 compresses yard waste in plastic bags within a short time frame, reducing volume and enhancing space efficiency without clogging issues, allowing for convenient disposal of low-density materials.
Implementation Method 1
An adapter device for vacuum cleaners that includes a screen and shield to allow air to be suctioned out of plastic bags, compressing the contents by reducing internal pressure
Implementation Method 2
compressing the contents by reducing internal 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.