Angled Embossments in Pleated Filter Media
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Solution Overview
Problem
Existing filter media technologies do not effectively optimize fluid flow and particulate matter collection due to limitations in embossment design, leading to suboptimal performance in directing fluid streams and separating clean and dirty sides in pleated filter elements.
Innovation Solution
A pleated filter media with angled embossments on both sides of the filter media panels, where the embossments extend transversely and are angled relative to the fluid flow direction, enhancing fluid redirection and particulate collection by increasing the distance between clean and dirty sides and improving fluid flow along gaps between panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional filter media without angled embossments is used, then the structure is simple and easy to manufacture, but the fluid flow directionality and particulate matter collection efficiency are suboptimal
Solution Approach 1:
The filter media incorporates embossments with specific angular orientations (e.g., 45 degrees) at particular locations on the media surface. These localized structural modifications create regions that redirect fluid flow and enhance particulate collection without requiring the entire structure to be complex. The embossments are strategically positioned to optimize performance in critical areas while maintaining overall structural simplicity.
Solution Approach 2:
The embossments add a dimensional element to the otherwise flat filter media surface. By creating raised and recessed areas with specific angular orientations, the invention transforms a two-dimensional surface into a three-dimensional structure that actively manipulates fluid flow paths and enhances particulate matter interception efficiency.
2Reliability
If angled embossments are added to filter media panels, then fluid flow directionality and particulate collection are improved, but manufacturing complexity increases
Solution Approach 1:
The embossments are formed by controlling specific parameters during the filter media manufacturing process, including the angular orientation (e.g., 45 degrees), the depth of embossing, and the spacing between embossment features. By optimizing these parameters, the invention achieves reliable fluid flow directionality while keeping the manufacturing process compatible with existing production methods.
3Productivity
If the distance between clean and dirty sides is increased through embossments, then particulate matter collection is enhanced, but the filter media thickness and pressure drop increase
Solution Approach 1:
The embossments create curved surfaces and angular features that redirect fluid flow along the filter media surface. This curvature and angular orientation extend the effective flow path length without requiring a linear increase in media thickness, thereby enhancing particulate collection efficiency while minimizing the pressure drop penalty associated with increased thickness.
Data Source
AI summary
A pleated filter media configured to receive a stream of fluid flowing in a first direction is provided. The pleated filter media includes a first filter media panel and a second filter media panel coupled to the first filter media panel at a first pleat extending in a second direction transverse to the first direction. The pleated filter media also includes a first embossment disposed on the first filter media panel and the second filter media panel. The first embossment extends in a third direction transverse to the first direction and the second direction.