Vacuum Cleaner Flat Bag Diffuser for Dust Distribution
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Solution Overview
Problem
Existing vacuum cleaner filter bags suffer from inadequate dust distribution, leading to premature blockages and reduced dust storage capacity and lifespan due to insufficient airflow distribution at the inlet opening.
Innovation Solution
A flat bag design featuring at least one diffuser formed by strips or sheet materials with oblong-shaped flow openings, positioned between the upper and underside of the bag, which creates turbulence in incoming air and dust particles, preventing blockages and enhancing dust storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a small deflection device is fitted directly below the inlet opening, then the airflow is deflected at the inlet region, but the bag becomes blocked due to dust accumulating between the inlet opening and the deflection device
Solution Approach 1:
The diffuser is divided into multiple strips arranged side by side, creating multiple flow openings that distribute airflow across different regions of the bag interior. This segmentation prevents dust accumulation in a single location and eliminates blockages while maintaining effective airflow deflection.
Solution Approach 2:
The diffuser strips are arranged in a pattern that extends airflow distribution into additional spatial dimensions within the bag interior. By creating flow openings at various positions and orientations, the design distributes dust particles across a larger volume, preventing concentration in the region between the inlet and deflection device.
2Quantity of substance
If flow distributors are added to improve dust distribution, then dust storage capacity increases, but the device complexity increases
Solution Approach 1:
The diffuser is constructed from strips with oblong-shaped flow openings that create a porous-like structure. This allows airflow to pass through multiple pathways, distributing dust particles effectively throughout the bag interior and increasing dust storage capacity without requiring complex mechanical components.
Solution Approach 2:
The diffuser strips are designed with specific geometric parameters including oblong-shaped flow openings with defined dimensions and spacing. By optimizing these parameters, the design achieves effective dust distribution and increased storage capacity while maintaining a simple, manufacturable structure.
3Reliability
If the diffuser area is increased to improve dust distribution, then blockage prevention improves, but the manufacturing cost increases
Solution Approach 1:
Rather than using a single large diffuser component, the design segments the diffuser function into multiple smaller strips. This approach achieves comprehensive airflow distribution and blockage prevention across the entire bag interior while using less total material and simplifying manufacturing, as each strip can be produced independently and assembled into the bag.
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 diffuser design significantly extends the lifespan of the filter bag by improving dust distribution and preventing blockages at the inlet opening, resulting in enhanced dust storage capacity and reduced pressure loss during operation.
Implementation Method 1
at least one diffuser which forms an intermediate plane and is made of strips of material and/or sheet materials with oblong-shaped flow openings... creates turbulence in incoming air and dust particles
Data Source
AI summary
A flat bag is for vacuum cleaners. The bad includes, in the interior thereof, at least one diffuser which forms an intermediate plane and is made of strips of material and/or sheet materials with oblong-shaped flow openings. Such flat bags are distinguished by excellent dust storage capacity and extension of the useful life.