Porous Vacuum Cleaner Filter Bag for Stable Suction
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Solution Overview
Problem
Conventional vacuum cleaner filter bags face challenges in achieving high mechanical stability while minimizing the tendency to clog, which reduces their service life and suction capacity.
Innovation Solution
A vacuum cleaner filter bag design featuring a first layer with high air permeability, such as a netting or perforated non-woven, combined with a fibre layer made of man-made or vegetable fibres, connected through calendering or adhesive methods to create a stable and non-clogging filter medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If protection layers are used to protect sensitive filter layers against abrasion, then mechanical stability is improved, but the layers become clogged with house dust, reducing service life
Solution Approach 1:
The patent employs a perforated sheet with numerous holes as the protection layer, allowing air and dust particles to pass through freely. This porous structure provides mechanical protection to sensitive filter layers while preventing clogging, as the perforations enable continuous airflow and dust passage without blocking the protective layer
Solution Approach 2:
The filter bag combines multiple materials with different functions: a perforated sheet for mechanical protection, a meltblown layer for filtration, and a carded web for dust holding. This composite structure integrates the advantages of each material while mitigating their individual disadvantages, achieving both mechanical stability and resistance to clogging
2Strength
If compact protection layers are used to protect sensitive layers, then mechanical stability is improved, but air permeability is reduced, reducing maximum suction capacity
Solution Approach 1:
The perforated sheet protection layer features numerous holes with a total open area that maintains high air permeability. This porous structure allows air to flow freely through the protection layer, preserving the vacuum cleaner's suction capacity while still providing the necessary mechanical protection to sensitive underlying layers
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 achieves high mechanical stability with a low tendency to clog, maintaining suction power throughout the service life by ensuring the layers are interconnected and not displaced, thus preventing dust accumulation.
Implementation Method 1
a first layer consisting of a netting, a perforated sheet or a perforated non-woven with an air permeability of at least 10,000 l/(m2 s), and a first fibre layer consisting of man-made fibres and/or vegetable fibres and connected to one side of the first layer
Data Source
AI summary
The invention relates to a vacuum cleaner filter bag having a filter medium comprising a first layer consisting of a netting, a perforated sheet or a perforated non-woven with an air permeability of at least 10,000 l/(m2 s), and a first fiber layer consisting of man-made fibers and/or vegetable fibers and connected to one side of the first layer.