Conductive Edge Band Filter Element for Ionization Integration
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Solution Overview
Problem
Existing filter solutions for air streams face challenges with high costs and complexity due to the use of electrically conductive wires or coatings on pleated filter media, and limited space for control electronics in air ducts, making maintenance and retrofitting difficult.
Innovation Solution
A filter element with a pleated filter medium forming a bellows, featuring at least two layers including a particle filter layer and an electrically conductive filter layer, and an additional electrically conductive edge band that forms a pocket for easy connection of electronic units, allowing for direct electrical and mechanical integration of ionization or sensor units within the filter assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrically conductive wires or coatings are applied to the bellows of the filter, then ionization function is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent combines the ionization function with the edge band structure by integrating conductive elements into the edge band rather than applying separate wires or coatings to the bellows. This merging of functions reduces manufacturing steps and complexity while achieving the same ionization effect.
Solution Approach 2:
The edge band acts as an intermediary carrier for the conductive elements, which in turn provide the ionization function. This intermediary approach allows the conductive components to be easily attached and removed through the pocket mechanism, simplifying installation and maintenance.
2Extent of automation
If control electronics for ionization electrodes are installed in the air channel, then ionization control is enabled, but installation space requirements increase and maintenance becomes difficult
Solution Approach 1:
The patent segments the filter element into modular components with the edge band and pocket structure, allowing control electronics to be integrated into the filter element itself rather than requiring separate installation in the air channel. This segmentation enables easy removal and maintenance of electronic components.
Solution Approach 2:
The patent moves the control electronics from the three-dimensional air channel space into the two-dimensional plane of the filter element by integrating them into the edge band assembly. This dimensional transition eliminates the need for additional installation space in the air duct while maintaining full control functionality.
3Reliability
If multiple layers including conductive filter layer are added to the bellows, then filtration performance is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent merges the conductive filter layer with the particle filter layer into a single multi-layer structure, combining filtration and ionization functions in one integrated component rather than requiring separate layers or assemblies.
Solution Approach 2:
The patent uses composite material structures where different filter layers with distinct properties (particle filtration and electrical conductivity) are combined into a single multi-layer assembly, achieving enhanced performance while streamlining the overall structure.
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
This configuration enables a compact and cost-effective filtration system with simplified integration and maintenance of electronic components, enhancing filtration performance and reducing installation space requirements.
Implementation Method 1
at least one electrically conductive edge band (4) connected to at least one outer side of the bellows (1), wherein at least one further edge band (4) is electrically conductive
Implementation Method 2
a folded filter medium (2) forming a bellows (1), the filter medium being constructed at least in two layers and having a particle filter layer (2.1)
Data Source
AI summary
A filter element for filtration of an air stream includes: a folded filter medium forming a bellows, the filter medium being constructed at least in two layers and having a particle filter layer, an electrically conductive filter layer, and at least one edge band, the at least one edge band being connected to at least one outer side of the bellows. At least one further edge band is connected to an outer side of the bellows. The at least one further edge band is electrically conductive. The at least one further edge band forms a pocket open towards one side.