Vacuum Cleaner Filter Bag Structure for Even Dust Loading
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Solution Overview
Problem
Vacuum cleaner filter bags have a limited service life due to clogging and reduced suction power over time, as existing designs fail to effectively distribute airflow and manage dust accumulation.
Innovation Solution
A vacuum cleaner filter bag design featuring a deflection device and an air-permeable material layer with unconnected portions that allows airflow to pass underneath, distributing the filter cake evenly and increasing the service life by reducing stress on the bag walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a filter bag is designed with traditional structure, then manufacturing is simple, but service life is limited due to clogging and reduced suction power
Solution Approach 1:
The filter bag is divided into multiple functional zones: a deflector component that redirects airflow, an air-permeable material layer with unconnected portions for dust accumulation, and a base layer. This segmentation allows each component to perform its specific function optimally, extending service life while maintaining manageable complexity through modular design.
Solution Approach 2:
The air-permeable material layer with unconnected portions acts as an intermediary between the incoming airflow and the base layer. It distributes the filter cake evenly and allows airflow to pass through, preventing direct impact and clogging of the base layer, thereby extending service life.
2Quantity of substance
If filter cake accumulates uniformly on bag walls, then dust storage capacity is maximized, but suction power decreases due to clogging
Solution Approach 1:
The air-permeable material layer has unconnected portions that create localized zones for dust accumulation. This allows the filter cake to distribute evenly in specific areas while maintaining airflow channels, preventing uniform clogging and preserving suction power alongside dust storage capacity.
Solution Approach 2:
The unconnected portions of the air-permeable material layer maintain continuous airflow paths through the filter cake. This ensures that dust storage capacity increases over time while suction power remains consistent, as the airflow action continues without interruption or blockage.
3Reliability
If airflow directly impinges on bag walls, then filtration efficiency is high, but bag walls experience excessive stress and service life reduces
Solution Approach 1:
The deflector and air-permeable material layer serve as intermediaries that redirect and distribute airflow. Instead of direct impingement on the bag walls, airflow passes through the unconnected portions of the material layer, significantly reducing stress on the bag walls while maintaining filtration effectiveness.
Solution Approach 2:
The deflector changes the flow direction parameter of the incoming airflow, redirecting it away from direct impact on bag walls. The air-permeable material layer further modifies flow parameters by distributing airflow through its unconnected portions, reducing localized stress while maintaining overall filtration performance.
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 design significantly extends the service life of the filter bag by maintaining high suction power and dust storage capacity over a longer period, as airflow distribution and dust management are improved, leading to enhanced performance and durability.
Implementation Method 1
The deflection device ensures that an air flow entering through an inlet opening of the vacuum cleaner filter bag does not directly impinge on the inside of the bag opposite the inlet opening
Implementation Method 2
An incoming air stream can thus flow under the material layer that is at least partially unconnected to the vacuum cleaner filter bag, so that this layer is at least partially spaced from the inside of the vacuum cleaner filter bag. This air flow can continue to pass through the material layer away from the bag wall in the direction of the interior of the bag
Implementation Method 3
Vacuum cleaner filter bag with a deflection device and a material layer which is connected to the inside of the vacuum cleaner filter bag opposite the inlet opening and has at least one part which is unconnected to the vacuum cleaner filter bag and includes part of the edge of the sheet of material
Data Source
Figure 1~3
Figure 4~5
Figure 6A~6F
AI summary
The invention relates to a vacuum cleaner filter bag. Said bag comprises an inlet opening, a deflection device, which is situated inside said bag in the vicinity of the inlet opening and is configured in such a way that an air stream entering the inlet opening can be deflected by the deflection device, and an air-permeable material layer, which is situated inside the vacuum cleaner filter bag, is connected at least at one point to said bag and has at least one part that is not connected to the vacuum filter bag and that encloses part of the edge of the material layer.