Block-Bottom Vacuum Bag Diffuser for Even Dust Distribution
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Solution Overview
Problem
Existing vacuum cleaner bags suffer from inadequate dust distribution, leading to premature blocking and reduced service life due to insufficient dust storage capacity.
Innovation Solution
A block bottom bag with at least one diffuser made of material strips and/or flat structures featuring elongated flow openings, which are connected to the bag wall, effectively swirling incoming air and dust particles, preventing blockages and enhancing dust storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a small deflection device is attached directly below the inlet opening to redirect airflow, then the air flow is redirected in the area of the inlet opening, but the bag becomes blocked by dust accumulated between the inlet opening and the deflection device, reducing service life
Solution Approach 1:
The diffuser is divided into multiple material strips arranged relative to one another, creating multiple flow paths that segment the dust-laden airflow. This segmentation prevents dust accumulation in a single location and distributes the flow evenly across the bag interior, resolving the contradiction between effective airflow redirection and prevention of dust blockage
Solution Approach 2:
The diffuser extends in multiple directions from the inlet opening, utilizing three-dimensional space within the bag rather than a simple planar deflection. This dimensional expansion creates multiple outlet paths for the airflow, preventing dust accumulation and maintaining reliable operation throughout the service life
2Speed
If flow distributors are attached in the area of the inlet opening to divide and redirect incoming air flow, then the air flow is divided into partial flows, but the dust storage capacity and service life are not sufficiently extended
Solution Approach 1:
The diffuser is positioned and configured to create locally optimized flow patterns at different locations within the bag. The material strips are arranged to direct airflow to specific areas, ensuring even dust distribution throughout the bag volume and maximizing dust storage capacity while extending service life
3Reliability
If the diffuser consists of multiple material strips arranged relative to one another, then the incoming air flow is effectively swirled and distributed, but the device complexity increases
Solution Approach 1:
The diffuser is constructed from flexible material strips that can be easily manufactured and installed. These thin film-like structures create the necessary flow distribution and swirling effects without requiring complex rigid components, thus achieving reliable dust distribution while minimizing device 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
The solution significantly extends the service life of the vacuum cleaner bag by improving dust storage capacity and preventing blockages at the air inlet, ensuring efficient airflow and prolonged usage.
Implementation Method 1
at least one diffuser which consists of at least two individual material strips arranged relative to one another and/or flat material structures with elongated flow openings
Data Source
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AI summary
The invention relates to a block-bottom bag (1) for vacuum cleaners, which on the inside has at least one diffuser (8) made of material strips and/or flat structures with elongated flow openings. Bags (1) such as these are characterized by an excellent dust storage capacity and a longer service life.