Folded Nonwoven Filter Bag Spacing for Higher Dust Capacity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum cleaner devices with filter bags have limited dust holding capacity and separation efficiency due to the rigid walls of the filter bag receiving space, which restrict the filter bag's ability to unfold and maximize its surface area.
Innovation Solution
The design incorporates a nonwoven filter bag with surface folds and spacer devices within the vacuum cleaner's filter bag accommodation space to keep the surface folds elevated, allowing for increased effective filter surface area during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the filter bag is placed in a receiving space with rigid walls, then the device structure is simple and stable, but the filter bag surface area is reduced due to contact with walls
Solution Approach 1:
A spacer device is introduced as an intermediary element between the filter bag and the rigid walls of the receiving space. The spacer maintains a distance between the filter bag surface and the walls, preventing contact and allowing the filter bag to maintain its full surface area while still providing structural support and defining the receiving space boundaries.
2Quantity of substance
If the filter bag uses nonwoven fabric with high resilience, then dust absorption capacity and service life are improved, but the ability to fold permanently is reduced
Solution Approach 1:
The filter bag is pre-formed with surface folds during manufacturing while the material is still pliable. These preliminary folds are created in the nonwoven fabric before it gains full resilience, allowing the complex 3-dimensional folded structure to be established in advance. Once folded, the high-resilience nonwoven material maintains these folds without requiring permanent deformation capability.
3Ease of manufacture
If the filter bag is designed as a flat bag with surface folds, then manufacturing complexity is reduced, but the internal volume before use is essentially zero
Solution Approach 1:
The filter bag transitions from a dynamic compressed state during transport and storage to a static expanded state during operation. The surface folds are designed to unfold automatically when the filter bag is installed in the vacuum cleaner and air flow is applied, transforming the bag from a flat 2D structure with zero internal volume to a 3D structure with sufficient internal volume to contain dust while maintaining manufacturing simplicity.
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
This configuration enhances the dust absorption capacity and separation efficiency of the filter bag, extending its service life while maintaining cost-effective production.
Implementation Method 1
can be unfolded during suction operation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a vacuuming device with a vacuum cleaner and a filter bag, in which the filter bag is designed as a nonwoven filter bag, a disposable filter bag, and a flat bag with a first filter bag wall and a second filter bag wall, the filter bag has at least one surface fold, wherein each surface fold has areas that lie within the surface of the filter bag wall and areas that project beyond the surface of the filter bag wall and can be unfolded during vacuuming operation, the vacuum cleaner has a filter bag receiving chamber with rigid walls, wherein at least one first spacer device is provided on the walls of the filter bag receiving chamber such that it keeps the areas lying within the surface of the filter bag wall spaced away from the wall of the filter bag receiving chamber, and at least one second spacer device is provided such thatthat it keeps the unfolded areas of at least one surface fold spaced away from the wall of the filter bag receiving chamber.