Vacuum Filter Bag with Immobilized Odor Particles for Low Abrasion
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Solution Overview
Problem
Current vacuum filter bags suffer from malodor generation due to the decomposition of organic materials, which are not effectively addressed by separate odor filters that increase filter resistance and reduce airflow, and previous solutions with integrated odor-absorbing particles face issues with particle abrasion and loss, leading to reduced odor absorption and dust holding capacity over time.
Innovation Solution
A vacuum filter bag with a layer containing immobilized odor-retaining particles, such as zeolites or carbon, that are strongly fixed to prevent abrasion loss during air flow, maintaining high dust holding capacity and odor removal efficiency throughout the filter bag's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If separate odor filter units are arranged downstream of the filter bag, then malodors can be absorbed, but filter resistance increases and airflow rate is reduced
Solution Approach 1:
The patent combines the odor absorption function with the dust filtration function by integrating odor-absorbing particles directly into the vacuum filter bag structure. This merging eliminates the need for separate odor filter units, thereby maintaining high airflow rate while still achieving effective malodor absorption at the source.
2Object-affected harmful factors
If separate odor filter units are used, then odor absorption is possible, but the vacuum cleaner must be specifically constructed to allow their use
Solution Approach 1:
By integrating the odor absorption layer directly into the vacuum filter bag, the invention eliminates the need for separate odor filter units and the associated complex construction requirements. The filter bag itself becomes a multi-functional component that handles both dust filtration and odor absorption without requiring specific modifications to the vacuum cleaner housing or airflow path.
3Object-affected harmful factors
If adsorber particles are incorporated into the vacuum filter bag, then odor absorption is improved, but particles may be released by air flow causing abrasion loss
Solution Approach 1:
The patent employs a composite structure where odor-absorbing particles are embedded within a matrix material that provides mechanical support and retention. This composite approach allows the particles to remain fixed during air flow while maintaining their odor absorption capability, preventing the abrasion loss that would occur with loose particles.
Solution Approach 2:
The invention utilizes a porous layer structure where odor-absorbing particles are distributed within a porous matrix. This porous structure allows air to pass through while the matrix holds the particles in place, preventing their release by air flow. The porosity maintains airflow characteristics while the embedded particles provide sustained odor absorption.
4Object-affected harmful factors
If multiple layers are used in the vacuum filter bag, then odor absorption and dust filtration are both achieved, but filter resistance and bag clogging increase
Solution Approach 1:
The patent merges the dust filtration function and odor absorption function into a single integrated layer rather than using separate layers. This is achieved by incorporating odor-absorbing particles directly into the dust filter bag matrix, creating a multi-functional single layer that eliminates the cumulative filter resistance and clogging issues associated with multiple separate 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 immobilized odor-retaining particles ensure minimal abrasion loss and sustained odor removal efficiency, reducing filter resistance and extending the service life of the vacuum filter bag while maintaining effective dust removal and odor absorption.
Implementation Method 1
The vacuum filter bags of the prior art are still unsatisfactory. According to DE 19 615 209 C1, the adsorber particles may be introduced into the filter paper by way of impregnation.
Implementation Method 2
the abrasion loss of said odor-retaining particles caused by an air flow of 90 cm/s through a 200 cm2 specimen of said layer for two hours, measured in accordance with DIN 44956 T2, is 0 to 10% by weight of the total odor-retaining particles present before the air is allowed to flow through said layer
Data Source
AI summary
The present invention relates to a vacuum filter bag comprising a layer containing immobilized odor-retaining particles characterized in that the abrasion loss of said odor-retaining particles caused by an air flow of 90 cm/s through a 200 cm2 specimen of said layer for two hours, measured in accordance with DIN 44956 T2, is 0 to 10% by weight of the total odor-retaining particles present before starting the air flow. The vacuum filter bags of the invention have a high dust holding capacity and an excellent long lasting odor removing effect.