Biodegradable Filter Assembly for Electrical Appliances
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Solution Overview
Problem
Conventional high-efficiency filter assemblies for air purification systems and vacuum cleaners are not washable, making them difficult to recycle and resulting in environmental issues such as landfill disposal and toxic pollutants.
Innovation Solution
A biodegradable filter assembly comprising at least 80% bio-based polymers, which are compostable, ensuring the filter can be easily recycled and disposed of without harming the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional high efficiency filter assemblies are made from glass or petrochemical based polymers to achieve HEPA filtration, then filtration efficiency is improved, but recyclability deteriorates and environmental harm increases
Solution Approach 1:
The patent changes the material composition parameter from conventional glass or petrochemical polymers to bio-based polymers with at least 80% content. This parameter change enables the filter assembly to maintain HEPA filtration efficiency while becoming compostable and environmentally sustainable at end of life
Solution Approach 2:
The patent uses composite material structure combining multiple bio-based polymer materials (polyester, polyamide, polyacrylonitrile, acrylic) in the filter medium layers. This composite approach achieves both high filtration performance and compostability, resolving the contradiction between efficiency and recyclability
2Reliability
If conventional filters are made from multiple bonded materials to achieve high filtration performance, then filtration efficiency is improved, but separation and recycling difficulty increases
Solution Approach 1:
The patent applies homogeneity principle by ensuring all filter medium layers and frame are made from bio-based polymers with similar chemical characteristics. This homogeneous material composition maintains filtration performance while enabling unified composting treatment, eliminating the need for complex material separation processes
3Ease of operation
If conventional filters are disposed of in landfill to simplify waste management, then disposal ease is improved, but environmental toxicity increases
Solution Approach 1:
The patent converts the previously harmful characteristic of non-biodegradable filter materials into a beneficial compostable property. By using bio-based polymers, the filter assembly transforms from a persistent environmental pollutant into a beneficial compost material that enriches soil, turning waste disposal into a resource recovery process
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 biodegradable filter assembly maintains high filtration efficiency while providing a sustainable solution for disposal, reducing landfill waste and toxic pollutants.
Implementation Method 1
the biodegradable filter assembly being configured to filter particulate matter from the airflow
Implementation Method 2
comprised at least 80% bio-based polymers which are compostable at the end of filter service life
Data Source
AI summary
A biodegradable filter assembly for an electrical appliance including a motor for generating an airflow through the appliance, in use, the biodegradable filter assembly being configured to filter particulate matter from the airflow, wherein the biodegradable filter assembly includes a filter medium and a filter frame for the filter medium, wherein both the filter frame and the filter medium contain at least 80% bio-based polymers which are compostable at the end of filter assembly service life.