Pleated and Honeycomb Filter Elements for Mobile Device Air Ducts
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Solution Overview
Problem
Existing filter arrangements for mobile devices combine particle filtration and gas adsorption in a single component, limiting the ability to optimize each filter function independently and resulting in suboptimal performance and maintenance challenges.
Innovation Solution
A filter arrangement featuring a pleated filter element for particle filtration and a separately designed honeycomb filter element for gas adsorption, allowing independent configuration and high filtration performance with low pressure loss, where the honeycomb filter can be designed with activated carbon and modified for specific air resistance and adsorption performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If filter functions are combined in a single filter element, then device complexity is reduced, but filtration performance and adaptability are limited
Solution Approach 1:
The filter system is divided into separate first and second filter elements, each optimized for specific filtration tasks. The first filter element handles particle filtration while the second filter element handles gas adsorption, allowing independent optimization of each component's structure and materials.
Solution Approach 2:
The second filter element (adsorption filter) is extracted as a separate component from the first filter element. This extraction allows the adsorption filter to be independently designed with optimal characteristics for gas filtration, including customizable honeycomb structure parameters such as cell density, channel length, and wall thickness.
2Ease of manufacture
If adsorption filter is integrated with pleated filter, then manufacturing is simplified, but air resistance increases
Solution Approach 1:
By segmenting the filter system into separate elements, each with optimized flow characteristics, the overall pressure loss is reduced. The honeycomb structure of the second filter element is specifically designed to minimize air resistance while maintaining effective adsorption surface area.
3Reliability
If filter elements are designed independently and mounted at distance, then filtration efficiency is improved, but device complexity increases
Solution Approach 1:
The filter system is segmented into functionally independent first and second filter elements that can be mounted at different positions in the air duct. This segmentation enables each element to be optimized for its specific filtration function while maintaining a relatively simple overall structure through modular installation.
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 configuration enables effective separation of particles and gases, reduces noise emissions, and allows for easy maintenance of the gas adsorption filter without disassembling the vent, providing enhanced filtration performance and service life.
Implementation Method 1
The first filter element is designed as a pleated filter, comprising at least one layer of nonwoven fabric
Implementation Method 2
The second filter element is designed as an adsorption filter... The second filter element can comprise activated carbon
Data Source
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AI summary
Filter arrangement (10) for a mobile device, comprising at least a first filter element (1) and a second filter element (2) which are arranged in an air duct (4) of the mobile device, wherein the first filter element (1) is designed as a pleated filter and the second filter element (2) as an adsorption filter, wherein the first filter element (1) and the second filter element (2) are designed separately from each other and are mounted spaced apart from each other in the air duct (4), wherein the first filter element (1) has at least one layer of a nonwoven fabric and wherein the second filter element (2) is designed as a honeycomb filter, comprising a plurality of channels (8) which are bounded by channel walls (9).