Vacuum Cleaner Filter Bag Airflow Deflection for Longer Suction
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Solution Overview
Problem
Vacuum cleaner filter bags face challenges in maintaining high suction power over a long period while preventing clogging, as existing designs struggle to effectively distribute dust and manage air flow, leading to reduced service life.
Innovation Solution
A vacuum cleaner filter bag design featuring a deflection strip and a separate piece of material inside the bag, which deflects the air flow and guides it away from the bag wall, allowing for even dust distribution and reduced stress on the bag walls, thereby extending the service life and maintaining high suction power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a conventional filter bag design is used, then the structure is simple, but the service life is reduced due to clogging and uneven dust distribution
Solution Approach 1:
The filter bag is segmented into functional zones using a deflection strip that divides the interior space. This segmentation creates distinct regions for dust accumulation and air flow, preventing uniform clogging across the entire bag surface and extending service life without requiring complex external mechanisms
Solution Approach 2:
A deflection strip acts as an intermediary element between the incoming air flow and the bag wall. This intermediate structure redirects the air flow to create even dust distribution while maintaining a relatively simple overall bag design, resolving the contradiction between extended service life and structural simplicity
2Productivity
If the air flow directly hits the bag wall, then the structure is simple, but dust distribution becomes uneven and suction power decreases
Solution Approach 1:
The deflection strip is designed to dynamically interact with the air flow, creating moving patterns of dust distribution along the bag wall. This dynamic approach maintains high suction power by preventing static dust accumulation zones, while the simple strip geometry keeps internal structure complexity low
3Duration of action of stationary object
If the filter material is exposed to high velocity air flow, then no additional components are needed, but the filter pores clog faster reducing service life
Solution Approach 1:
The bag wall is functionally segmented by the deflection strip, creating protected zones where air flow velocity is reduced. This segmentation allows the filter material to operate at lower effective velocities, reducing pore clogging and extending service life without modifying the filter material itself or adding complex structural elements
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 effectively divides the air flow into partial flows, reducing stress on the bag walls and improving dust distribution, resulting in a longer service life and sustained high suction power during operation.
Implementation Method 1
a deflection strip for deflecting an air flow entering through the inlet opening
Implementation Method 2
The piece of material guides an air flow on the side of the material strip facing away from the inlet opening (ie behind the strip) in the direction of the material strip. The strip of material is thus lifted in a simple manner by the air flow
Data Source
Figure 1~3
Figure 4
AI summary
The invention relates to a vacuum cleaner filter bag with a bag wall made of filter material, wherein an inlet opening is provided in the bag wall, a deflecting strip for deflecting an airflow entering through the inlet opening, wherein the deflecting strip is arranged inside the vacuum cleaner filter bag, a material strip which is arranged inside the vacuum cleaner filter bag and connected to the bag wall, wherein at least a part of the edge of the material strip is not connected to the bag wall, and a material piece which is arranged inside the vacuum cleaner filter bag and connected to the bag wall, wherein the material piece is arranged such that the material strip is kept at least partially spaced away from the bag wall with its side facing away from the inlet opening.