Filter Screen Impedance Material Air Flow Regulation
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Solution Overview
Problem
Conventional filter screens require varying corrugation heights and pitches to regulate air flow, making them difficult to fabricate and mass-produce, as they rely on pressure differences to control air volume passing through.
Innovation Solution
A filter screen with a fixed corrugation height and pitch, partially or fully covered with an impedance material to increase impedance and regulate air flow without altering corrugation dimensions, using materials like filter paper, wire screen, or perforated sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different corrugation heights and pitches are used to regulate air flow, then air flow volume can be controlled, but manufacturing complexity increases
Solution Approach 1:
The filter screen is divided into multiple regions with different corrugation heights, allowing each region to have different air flow characteristics while maintaining a standardized manufacturing process for the overall structure
Solution Approach 2:
Different regions of the filter screen are designed with locally optimized corrugation heights to achieve specific air flow distribution patterns, while the pitch remains uniform throughout, simplifying manufacturing
2Adaptability or versatility
If different corrugation pitches are used to regulate air flow, then air flow volume can be controlled, but manufacturing complexity increases
Solution Approach 1:
The patent varies corrugation heights in different regions while maintaining a constant pitch, which simplifies manufacturing compared to varying both parameters. The uniform pitch allows for standardized tooling and production processes
Solution Approach 2:
The patent changes only one geometric parameter (corrugation height) while keeping another (pitch) constant, thereby achieving air flow regulation with simpler manufacturing requirements compared to varying both parameters
3Quantity of substance
If pressure difference is increased to increase air volume, then air flow volume increases, but energy consumption increases
Solution Approach 1:
Different regions of the filter screen have different corrugation heights optimized for their specific functions, allowing air to flow more efficiently through regions with lower impedance while maintaining filtration in other areas, reducing overall pressure requirements
Solution Approach 2:
The filter screen design allows dynamic adjustment of air flow distribution across different regions by varying corrugation heights, enabling the system to optimize pressure drop and energy consumption based on operational requirements
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
Enables easy adjustment of air flow impedance to control air volume passing through, simplifying production and allowing for consistent air flow regulation across different areas without changing corrugation dimensions, reducing manufacturing complexities.
Implementation Method 1
The filter screen is partially or fully covered by the impedance material to increase the impedance thereof and thereby reduce the speed of air flowing through the filter screen
Data Source
AI summary
A filter screen structure includes a filter screen having air vents distributed thereon, and one or more layers of impedance material attached to the filter screen to increase an impedance of the filter screen and reduce the speed of air flowing through the filter screen. Through proper attachment of the impedance material to the filter screen in predetermined manners, the speed of air flown through the filter screen may be effectively adjusted to thereby regulate the volume of air flown through the filter screen.