Pleated Vacuum Cleaner Filter Bag for Sustained Suction
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Solution Overview
Problem
Vacuum cleaner filter bags with high filtration efficiency experience a significant reduction in suction power as the filling degree increases, leading to inadequate dust intake and cleaning effect due to the decrease in volume flow of air as the bag fills up.
Innovation Solution
A vacuum cleaner filter bag design featuring a first and second bag wall connected along their periphery with at least five folds, increasing the surface area for airflow and maintaining flexibility to adapt to the installation space, thereby reducing pressure drop and enhancing dust holding capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter bag uses high filtration efficiency material, then particle separation is improved, but suction power is significantly reduced as filling degree increases
Solution Approach 1:
The filter bag transitions from a flat two-dimensional structure to a three-dimensional folded structure with multiple pleats. This dimensional change dramatically increases the filter surface area within the same installation space, allowing air to flow through multiple folded layers simultaneously, thereby maintaining suction power while preserving high filtration efficiency.
Solution Approach 2:
The filter bag employs a nested folded structure where multiple layers of filter material are folded and nested within each other. The folds create a compact configuration that expands when air flows through, allowing the filter to maintain its filtration efficiency while adapting to the installation space and reducing pressure drop.
2Productivity
If the filter bag volume is increased to maintain airflow, then the installation space requirement increases, but the available space in vacuum cleaners is limited
Solution Approach 1:
By folding the filter material into multiple pleats, the design transforms a large two-dimensional surface area into a compact three-dimensional structure. This allows the filter bag to provide sufficient surface area for maintaining volume flow while occupying minimal installation space within the vacuum cleaner housing.
Solution Approach 2:
The filter bag uses flexible nonwoven material that can be folded into a compact configuration for installation. When air flows through the bag, the flexible folds expand to provide the necessary surface area for maintaining airflow, allowing the filter to adapt between a compact installed state and an expanded functional state.
3Strength
If the filter bag is made completely closed with welded seams, then structural integrity is improved, but flexibility and adaptability to installation space are reduced
Solution Approach 1:
The filter bag is divided into multiple folded sections or pleats, each maintaining structural integrity through localized welding at the seams. This segmentation allows each fold to flex independently while the welded seams provide structural strength, combining rigidity where needed with flexibility for adaptation to installation space.
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 extends the filter's service life, maintains higher suction power with lower power consumption, and improves particle separation by reducing media passage speed, allowing for effective dust collection even at higher filling degrees.
Implementation Method 1
the filter material of the first and of the second bag wall is formed from a nonwoven
Implementation Method 2
at least five folds, increasing the surface area for airflow and maintaining flexibility to adapt to the installation space, thereby reducing pressure drop
Data Source
AI summary
The invention relates to a vacuum cleaner filter bag, including a first bag wall containing a filter material and a second bag wall containing a filter material. The first and the second bag walls are joined together along the periphery thereof such that the vacuum cleaner filter bag is completely closed. The filter material of the first and the second bag walls is made of a non-woven fabric. The vacuum cleaner filter bag includes an inlet through which the air which is to be filtered can flow into the vacuum cleaner filter bag, also including a retaining plate. The vacuum cleaner filter bag is characterized in that the first and/or the second bag wall includes at least five folds.