Z-Shaped Corrugated Fluid Filter for Diesel Exhaust
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Solution Overview
Problem
Current fluid filters are inadequate for effectively screening micro-particles in diesel exhaust gas, as they suffer from low carrying capacity, significant pressure drop, and inefficient design, particularly in terms of serviceable area and size.
Innovation Solution
The development of a fluid filter with a corrugated and flat filtering plate or ring configuration, forming a 'Z' shape to increase the active filtering area and enhance pressure resistance, allowing for a larger serviceable area and improved carrying capacity, with options for both plate and tube types to suit different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional filters (porcelain, bag, pleat, or tube filters) are used for gas/solid separation, then filtering function is provided, but serviceable area is small and carrying capacity is low
Solution Approach 1:
The invention transitions from conventional two-dimensional flat filter surfaces to a three-dimensional corrugated structure with alternating peaks and valleys. This dimensional change multiplies the effective filtering surface area within the same footprint, directly resolving the contradiction between limited serviceable area and required carrying capacity
Solution Approach 2:
Multiple corrugated filtering plates are stacked and nested within each other in a compact arrangement, with each plate contributing additional filtering surface area. This nesting approach maximizes the total serviceable area while maintaining a space-efficient design that improves carrying capacity without increasing overall filter size
2Productivity
If filter size is increased to improve carrying capacity, then more filtering area is available, but filter becomes bulky and inefficient
Solution Approach 1:
By creating a corrugated structure that extends in the vertical dimension (height) rather than requiring proportional increases in horizontal dimensions, the invention achieves higher carrying capacity within a compact volume. The alternating peaks and valleys utilize vertical space efficiently
Solution Approach 2:
The corrugated plates feature curved surfaces with alternating convex peaks and concave valleys, which provide structural strength while maximizing surface area within limited volume. This curvature approach allows the filter to maintain structural integrity without requiring excessive size
3Strength
If filtering plates are made thicker to enhance pressure resistance, then structural strength is improved, but active filtering area per unit is reduced
Solution Approach 1:
The corrugated structure with its curved peaks and valleys provides inherent structural strength and pressure resistance through geometric form rather than relying on plate thickness. The curved surfaces distribute mechanical stresses more effectively, maintaining pressure resistance while preserving maximum filtering surface area
Solution Approach 2:
The filter assembly is segmented into multiple thin corrugated plates stacked together, where each thin plate contributes filtering surface area while the collective stacked structure provides the required pressure resistance through distributed load bearing across multiple layers
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
The solution significantly increases the active filtering area per unit and enhances pressure resistance, enabling higher fluid compact capacity while minimizing pressure drop, with the tube type offering additional advantages in manufacturing efficiency and structural integrity.
Implementation Method 1
Each of the corrugated filtering plates is respectively welded onto a pair of neighboring flat filtering plates at opposed edges
Data Source
AI summary
The present invention discloses a fluid filter for screening carbon-microparticles exhausted from diesel engines, such filter has two types of structure, i.e. the plate type and the preferable tube type, which includes plurality of multilayer corrugated filtering rings and flat filtering rings, a central tube, and an outer casing; the innermost layer of the flat filtering rings is welded onto the central tube, and the outermost layer of the flat rings is welded onto the outer casing; the multi-layer corrugated filter rings are coaxially alternated within the flat filtering rings and formed with a zigzag manner, wherein side edges of each of the corrugated filtering rings are respectively welded onto neighboring flat filtering rings so as to form a continuous filter core with ‘Z’ shaped side endings, wherein two sides of the Z shaped side endings of said filter core are alternatively applied as fluid inlet and fluid outlet.