Pleated Vacuum Cleaner Filter Bag for Low Pressure Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vacuum cleaner filter bags experience a decrease in suction power as the filter bag fill level increases, particularly with high separation efficiency designs, leading to reduced dust absorption capacity.
Innovation Solution
A vacuum cleaner filter bag with a bag wall made of at least partially pleated nonwoven material, connected by a circumferential weld seam, which increases the filtering area and dust storage capacity without altering the material properties, and can be designed as a flat or tubular bag with optional side gussets and a fixing device for fold stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the filter bag fill level increases, then the dust storage capacity increases, but the suction power and airflow decrease
Solution Approach 1:
The filter material is pleated in the machine direction to create a three-dimensional structure with increased surface area. This dimensional transformation allows more filtration surface to be packed into the same bag volume, maintaining effective filtration area even as dust accumulates and the bag fills up.
Solution Approach 2:
The filter material is divided into multiple pleats that create separate airflow channels. This segmentation allows air to flow through multiple parallel paths, reducing resistance and maintaining suction power even when one area becomes clogged with dust.
2Reliability
If high separation efficiency is used, then the dust absorption capacity increases, but the pressure loss increases
Solution Approach 1:
Pleating the filter material creates additional spatial dimensions for airflow. This allows the same filtration efficiency to be achieved with reduced face velocity and lower pressure drop, as the air is distributed across a larger effective area in three-dimensional space.
Solution Approach 2:
The pleated structure segments the airflow into multiple smaller channels, reducing the velocity and pressure loss in each individual channel while maintaining overall high separation efficiency through the cumulative effect of all pleats.
3Area of stationary object
If the filtering area is increased, then the dust storage capacity increases, but the bag geometry becomes more complex
Solution Approach 1:
Instead of increasing bag volume through complex geometries like block bottoms or side gussets, the invention increases filtering area by pleating the material in the machine direction. This creates surface area in the third dimension while maintaining a simple flat or tubular bag shape that is easy to manufacture and install.
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 pleated nonwoven material design maintains high dust storage capacity and separation performance with reduced pressure loss, even at high dust loads, by optimizing the filtration area and airflow efficiency.
Implementation Method 1
a vacuum cleaner filter bag with a bag wall made of filter material, which has a through opening through which air to be cleaned can flow into the vacuum cleaner filter bag
Implementation Method 2
the first and a second filter material layer are connected to one another by a circumferential weld seam
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention comprises a vacuum cleaner filter bag with a bag wall made of filter material, which has a through-opening (102) through which air to be cleaned can flow into the vacuum cleaner filter bag, characterized in that the bag wall comprises a non-woven material that is at least partially pleated.