Multi-functional Air Purification Filter with Bends
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Solution Overview
Problem
Conventional air purification devices with multiple filters arranged in parallel face challenges of increased volume, weight, and reduced airflow due to differential pressure, limiting their performance and application area.
Innovation Solution
A multi-functional air purification filter with a breathable support layer, a mesh layer coated with photocatalytic, adsorption, or sterilizing materials, and a filter layer, featuring a design with multiple bends and incorporating beads filled with these materials, which reduces volume and differential pressure, enhancing airflow and application area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple filters are arranged in parallel to achieve multiple purification functions, then purification performance is improved, but device volume and weight increase
Solution Approach 1:
The patent combines multiple purification functions (photocatalysis, adsorption, sterilization) into a single integrated filter element. The filter includes a support layer with multiple functional layers: a photocatalytic layer containing TiO2 particles, an adsorption layer with activated carbon, and a sterilization layer with silver particles. This merging of multiple filter functions into one element resolves the contradiction by maintaining comprehensive purification performance while reducing device volume compared to using separate parallel filters for each function.
Solution Approach 2:
The filter employs composite material structures where different functional materials are integrated within a single filter element. The support layer is composed of multiple functional layers with distinct materials: photocatalytic TiO2, adsorptive activated carbon, and antimicrobial silver particles. This composite structure enables multiple purification mechanisms to coexist in one filter, achieving high purification performance without increasing device volume through multiple separate filters.
2Reliability
If multiple filters are arranged in parallel to achieve multiple purification functions, then purification performance is improved, but device weight increases
Solution Approach 1:
The patent combines multiple purification functions (photocatalysis, adsorption, sterilization) into a single integrated filter element. The filter includes a support layer with multiple functional layers: a photocatalytic layer containing TiO2 particles, an adsorption layer with activated carbon, and a sterilization layer with silver particles. This merging of multiple filter functions into one element resolves the contradiction by maintaining comprehensive purification performance while reducing device weight compared to using separate parallel filters for each function.
3Reliability
If multiple filters are arranged in parallel to achieve multiple purification functions, then purification performance is improved, but differential pressure increases and air flow decreases
Solution Approach 1:
The filter structure is designed with varying local properties in different layers to optimize airflow while maintaining purification functions. The support layer has a specific porosity (30-70%) to facilitate airflow, while the functional layers (photocatalytic, adsorption, sterilization) are positioned at specific locations within the filter element. This local optimization of structural properties allows multiple purification functions to be achieved without excessively increasing differential pressure, thereby maintaining better air flow compared to multiple dense parallel filters.
4Volume of stationary object
If a compact filter design is used to reduce device volume, then device size is reduced, but purification performance may be compromised
Solution Approach 1:
The filter employs a nested multi-layer structure where functional layers are arranged concentrically or sequentially within a compact cylindrical or rectangular element. The support layer forms the outer structure, with photocatalytic, adsorption, and sterilization layers nested within or on the support layer. This nesting arrangement maximizes the utilization of filter volume, allowing multiple purification functions to be packed into a compact space without compromising the effectiveness of each functional layer.
Solution Approach 2:
The filter employs composite material structures where different functional materials are integrated within a single filter element. The support layer is composed of multiple functional layers with distinct materials: photocatalytic TiO2, adsorptive activated carbon, and antimicrobial silver particles. This composite structure enables multiple purification mechanisms to coexist in one filter, achieving high purification performance without increasing device volume through multiple separate filters.
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 solution results in a compact air purification device with improved design flexibility and increased application area, maintaining high purification performance while minimizing pressure loss and maintenance costs.
Implementation Method 1
the mesh layer includes a coating layer of at least one of a photocatalytic material, an adsorption material, or a sterilizing material
Implementation Method 2
the mesh layer includes a coating layer of at least one of a photocatalytic material, an adsorption material, or a sterilizing material
Data Source
AI summary
A multi-functional air purification filter includes: a breathable support layer; a mesh layer provided on the breathable support layer; and a filter layer provided on the mesh layer, wherein at least a portion of the multi-functional air purification filter has a plurality of bends, and the mesh layer includes a coating layer of at least one of a photocatalytic material, an adsorption material, or a sterilizing material.