Multi-Layer Vacuum Cleaner Filter Bag for Dust Capacity and Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum cleaner filter bags face challenges in optimizing dust storage capacity and air flow rate due to restricted installation space, leading to unpredictable performance with changes in thickness, density, or fiber geometry in the coarse filter layer.
Innovation Solution
A vacuum cleaner filter bag design featuring a first filter layer composed of 3 to 25 individual dry-laid non-woven fabric layers with specific air permeability and penetration characteristics, functioning as a coarse filter, and a second fine filter layer, enhancing dust storage capacity and air flow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the thickness or grammage of the coarse filter layer is increased to improve dust storage capacity, then dust storage capacity improves, but service life does not necessarily improve and unexpected undesirable effects occur
Solution Approach 1:
The coarse filter layer is segmented into multiple individual layers (at least 3, at most 25) each with a specific basis weight range (5-50 g/m²). This segmentation allows the filter to achieve high dust storage capacity through cumulative effect of multiple layers while maintaining service life by preventing any single layer from becoming excessively thick or dense, which would cause unpredictable performance degradation.
2Quantity of substance
If the thickness, density or geometry of the coarse filter layer is changed to improve dust storage capacity, then dust storage capacity may improve, but filtering properties become unpredictable
Solution Approach 1:
The invention changes the parameter of basis weight for each individual layer to a specific range (5-50 g/m²) and the number of layers to a specific range (3-25 layers). This parameter control ensures that the total grammage is achieved through a controlled combination of multiple layers rather than through unpredictable changes in thickness, density, or geometry of single layers, thereby maintaining consistent filtering performance.
3Volume of moving object
If the available installation space is reduced, then the vacuum cleaner becomes more compact, but the material quality (thickness, grammage, stiffness) that can be used is restricted
Solution Approach 1:
Instead of increasing the thickness (one dimension) of a single filter layer to improve dust storage capacity, the invention uses multiple individual layers stacked in sequence. This approach achieves the required filtering performance within restricted installation space by utilizing the layering dimension rather than relying on increased thickness of individual layers, thereby avoiding the need for complex material compositions.
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 multi-layer design significantly improves dust storage capacity and maintains high air permeability, reducing pressure loss and maintaining suction power consistency even when loaded with dust, thus enhancing the overall filtering performance.
Implementation Method 1
a first filter layer and a second filter layer, the first filter layer being arranged in front of the second filter layer in the air flow direction
Implementation Method 2
each individual layer a dry-laid non-woven fabric with a basis weight of 5 g/m 2
Data Source
Figure 1A~2
Figure 3
Figure 4
AI summary
The invention provides a vacuum cleaner filter bag, comprising a first filter layer and a second filter layer, the first filter layer being arranged in front of the second filter layer in the air flow direction, and the first filter layer having at least 3 and at most 25 individual layers, in particular at least 5 and at most 15 individual layers , wherein each individual layer is a dry-laid nonwoven fabric with a basis weight of 5 g/m2 to 50 g/m2, in particular with a basis weight of 8 g/m2 to 30 g/m2.