Pleated Filter Assembly With Diffusion Member for Accurate Airflow Sensing
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Solution Overview
Problem
Conventional filters in air purifiers and fluid filtering systems suffer from clogged openings due to particle accumulation, leading to reduced filtration efficiency and measurement errors from air flow gaps, which affect the accuracy of filter replacement intervals.
Innovation Solution
A filter assembly with zigzag-type pleats and a diffusion member containing aromatic substances, antibacterial agents, or dehumidifying agents, where the diffusion member is seated between pleated parts and secured by attaching means, and a diffusion substance measuring sensor monitors the air flow to determine the filter replacement interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filters are used with flat filter surfaces, then the structure is simple and easy to manufacture, but foreign particles accumulate on the filter surface causing clogged openings and reduced filtration efficiency
Solution Approach 1:
The filter surface is designed with convex curvature instead of a flat surface. This curved geometry prevents foreign particles from accumulating and clogging the filter openings, thereby maintaining filtration efficiency over time while adding minimal structural complexity
2Measurement precision
If filters are installed in devices with gaps between filter edges and device housing, then installation is easier and filter replacement is simpler, but air flow gaps form causing measurement errors in sensor readings
Solution Approach 1:
A flexible sealing film is introduced between the filter assembly and device housing. This thin film compensates for gaps and irregularities, ensuring accurate air flow measurements while maintaining ease of filter installation and replacement
3Reliability
If filters operate for extended periods without replacement, then operational continuity is maintained, but deposited particles decompose causing contamination and odors in filtered air
Solution Approach 1:
A sensor system continuously monitors air flow and particle deposition on the filter. When the sensor detects that particle accumulation reaches a threshold that would cause decomposition and contamination, it triggers an alert for filter replacement, ensuring air quality is maintained while optimizing replacement timing
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
Ensures effective filtration throughout the air flow region and accurately measures the replacement interval for aromatic substances, improving filtration efficiency and reducing measurement errors.
Implementation Method 1
a diffusion member, which is seated in said seating place, and in that the flow of air that is filtered by said second pleated part passes through said diffusion member
Data Source
AI summary
Filter assemblies and filtering systems including the same are disclosed. In some embodiments the filter assemblies and systems include a diffusion member and first and second pleated parts, wherein the first and second pleated parts include different first and second peak heights h1 and h2, respectively. In some instances h1 is greater than h2, and h2 and the thickness of the diffusion member are set such that an upper surface of the diffusion member does not extend past said first upper peaks when the diffusion member is seated in a seating place defined by a seating place that is at least partly defined by the second pleated part. The filter assemblies and systems may also be configured such that an air flow filtered by said second pleated part passes through said diffusion member.