Dust collecting filter and method for manufacturing dust collecting filter

The filter medium is bent into a corrugated shape with multiple peaks and valleys, transforming the electrode arrangement from a two-dimensional planar structure to a three-dimensional spatial structure. This dimensional transformation increases the electric field activation area by utilizing the vertical and lateral spaces created by the corrugated geometry, while the spaced-apart electrode arrangement in the valleys reduces blocking of the transmission area, thereby decreasing pressure loss.

The electrodes are selectively positioned only in the valley portions of the corrugated filter medium, with specific spacing between them. This local positioning strategy activates the electric field precisely in the regions where foreign substances are most effectively collected, while leaving the peak regions and transmission paths relatively unobstructed, thereby maintaining low pressure loss while achieving high collection efficiency.

The corrugated structure with its curved peaks and valleys provides natural spatial separation between electrodes. The curved geometry of the valleys allows electrodes to be positioned in a three-dimensional arrangement that maintains sufficient spacing to prevent contact and energization, while still creating a strong electric field through the curved field lines concentrated in the valley regions.

The filter medium is transformed from a flat two-dimensional structure to a corrugated three-dimensional structure with peaks and valleys. This dimensional change dramatically increases the filtering area and electric field activation area without requiring additional material or complex assembly processes, making the manufacturing process remain relatively simple while achieving enhanced performance.