Microfiber Vacuum Dust Bag Seams That Prevent Wall Clogging
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Solution Overview
Problem
Microfiber dust bags in vacuum cleaners tend to clog due to close adherence to suction chamber walls, limiting air transmission and filtering effectiveness, especially in industrial cleaners with straight walls, and require additional materials for optimal performance.
Innovation Solution
A microfiber dust bag structure with outwardly seamed edges, forming wide air channels between the bag and suction chamber walls, using solely microfiber fabric with seams that are at least 20mm wide, allowing even air flow and filtration across the entire surface, and optionally reinforced with additional materials for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microfiber fabric is used for dust bag to improve air transmittance and filtering capacity, then the dust bag adheres closely to suction chamber walls, but air transmission is blocked and filtering capacity is wasted due to clogging
Solution Approach 1:
The dust bag is divided into multiple compartments or sections that create intentional air channels between the bag and suction chamber walls. This segmentation prevents complete adhesion and maintains airflow paths while preserving the microfiber fabric's filtering surface area.
Solution Approach 2:
An intermediary structure (air channels or spacers) is introduced between the microfiber dust bag and the suction chamber walls. This intermediary prevents direct contact and adhesion, allowing air to flow through designated channels while the microfiber fabric continues to filter effectively.
2Reliability
If microfiber fabric is used to achieve good filtering properties, then the dust bag becomes soft and flexible, but it adheres closely to chamber walls resulting in fast clogging
Solution Approach 1:
The problem is solved by adding a spatial dimension - creating three-dimensional air channels or gaps between the flexible microfiber bag and the chamber walls. This dimensional approach allows the soft bag to maintain its filtering properties while preventing adhesion through the introduced space.
Solution Approach 2:
The microfiber fabric itself acts as a flexible shell that is intentionally designed with controlled adhesion characteristics. By combining the flexible nature of microfiber with structured air channels, the system maintains flexibility for effective filtering while preventing harmful adhesion to walls.
3Device complexity
If paper bags are used to maintain simple structure, then air channels are naturally formed, but filtering capacity for small particles is insufficient
Solution Approach 1:
The invention uses microfiber fabric, which is inherently a porous material with fine interstices suitable for filtering small particles. The porous structure of microfiber provides superior filtering capacity compared to paper while maintaining reasonable structural simplicity through the use of air channels.
Solution Approach 2:
The system combines microfiber fabric (for filtering) with an air channel structure (for airflow management). This composite approach integrates two functional elements - the filtering microfiber material and the airflow-guiding structural design - to achieve both good filtration and maintained productivity.
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 design ensures effective air transmission and filtration throughout the suction chamber, preventing clogging and utilizing the full filtering capacity of microfiber fabric, while simplifying manufacturing and reducing costs by eliminating the need for additional materials.
Implementation Method 1
microfiber fabric which is known to have good air transmittance and at the same time to filter different and even very small particles from air
Implementation Method 2
the outwardly folded edges of the microfiber fabric by which the fabric is or the fabrics are seamed together to form the bag-shaped structure are at least 20mm in width. In such structure, the fact that sufficiently large seam structures outside the dust bag form good air channels for the air flows between the dust bag and the walls of the suction chamber
Data Source
Figure 1~4
AI summary
Dust bag of a vacuum cleaner comprising a bag section (1) made from microfiber fabric by seaming and having at least one seam (3) which is substantially equally long as the dust bag and provided at the outwardly folded edges (2) of the bag fabric. According to the invention, there are one or more bag sections which are all made from microfiber fabric. Further, the out¬ wardly folded edges (2) of the fabric are at least 20mm in width.