Filter Pocket Tuck Fold Design for Increased Media Area
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Solution Overview
Problem
Conventional filter pocket arrays in gas turbine air intake systems have limited surface area due to the depth constraints of the filter housing, which restricts their performance in removing contaminants and affects the turbine's efficiency and service life.
Innovation Solution
The filter assembly features a filter frame with filter pockets that include a tuck fold design, creating two sub-filter pockets, increasing the surface area by folding the closed end back onto itself, and supported by additional members to prevent unfolding, allowing for a more compact and efficient filtration system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the depth of filter pockets is increased to improve surface area, then the filter media area increases, but the filter housing size must increase
Solution Approach 1:
The closed end of the filter pocket is folded back onto itself to form a tuck fold, creating nested sub-pockets within the existing pocket structure. This nesting approach allows the filter media to be folded back on itself, effectively doubling the filter media area within the same housing volume without requiring additional space.
Solution Approach 2:
Instead of increasing depth in one dimension, the invention utilizes the third dimension by folding the filter media back onto itself. The tuck fold creates sub-pockets that extend in the opposite direction, effectively using spatial folding rather than linear extension to increase surface area.
2Area of stationary object
If the number of filter pockets is increased to improve filtration performance, then the filter media area increases, but the device complexity increases
Solution Approach 1:
Each filter pocket is segmented into sub-pockets through the tuck fold, creating multiple filtration zones within a single pocket structure. This segmentation increases the effective filter media area without requiring additional separate pockets, thereby maintaining structural simplicity while achieving enhanced filtration capacity.
3Quantity of substance
If the filter pocket surface area is increased to improve dust loading capacity, then the filter media area increases, but the housing size must increase
Solution Approach 1:
The tuck fold creates nested sub-pockets that are contained within the original pocket boundaries, allowing the filter media area to be doubled without expanding the housing volume. This nesting configuration enables increased dust loading capacity within the same spatial footprint.
Data Source
AI summary
A filter pocket arrangement that provides increased filter media area is described. In one embodiment, each filter pocket includes a pocket mouth that attaches to a filter frame and a pocket body extending longitudinally away from the pocket mouth to a closed end. The closed end is folded back inward towards the pocket mouth to form a tuck fold that defines a first sub-filter pocket and a second sub-filter pocket at the pocket mouth. The first sub-filter pocket and the second sub-filter pocket each has a sub-pocket mouth that coincides with a portion of the pocket mouth, with sidewalls extending longitudinally therefrom to form an apex at the closed end of the filter pocket. The first sub-filter pocket is separated from the second sub-filter pocket by the tuck fold.