Filter Groove Design for Clogging Prevention
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Solution Overview
Problem
Filtration passages in filters often become clogged by larger particles, leading to a deterioration of filtration performance, and simply increasing cross-sectional areas does not effectively address this issue without degrading filtration efficiency.
Innovation Solution
The filter design incorporates symmetrical, identical straight grooves on the inlet side surface of the filtration unit, with each groove having a width of (D/2) and a depth of D, where D is the diameter of the filtration passage, to prevent larger substances from clogging the passage while allowing smaller particles to pass through.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cross-sectional area of the filtration passage is increased to prevent clogging, then the filtration passage can accommodate larger particles, but the filtration performance is degraded
Solution Approach 1:
The inlet surface is segmented into multiple grooves that divide and direct the flow of particles. Each groove acts as an independent channel that guides particles toward the filtration passage inlet, preventing large particles from directly blocking the passage while maintaining efficient filtration of smaller particles through the segmented flow paths.
Solution Approach 2:
The grooves serve as intermediary structures between the inlet and the filtration passage. These grooves capture and redirect large particles before they can enter and clog the filtration passage, while allowing smaller particles to pass through to the filtration media. The grooves act as a preliminary sorting mechanism that protects the filtration passage.
2Reliability
If the filtration passage is designed to trap larger particles, then clogging is prevented, but the filtration efficiency for smaller particles deteriorates
Solution Approach 1:
Different regions of the inlet structure have different functions: the grooves are designed with specific dimensions and orientations to capture and redirect large particles, while the filtration passage maintains its original filtration characteristics for smaller particles. The local geometry of the grooves (width, depth, orientation) is optimized to achieve particle separation without affecting the overall filtration efficiency.
Solution Approach 2:
The grooves are oriented at specific angles (e.g., 45 degrees) relative to the filtration passage inlet, creating a three-dimensional particle guidance system. This angular orientation allows the grooves to intercept particles coming from different directions and redirect them appropriately, adding a dimensional element to particle separation that enhances both clogging prevention and filtration efficiency.
Data Source
AI summary
A filter comprises at least one filtration unit with a filtration passage having an inlet and an outlet, wherein the filtration unit includes at least one groove formed in an inlet side surface of the filtration unit, said at least one groove extending to the inlet and dimensioned to hold back substances which may clog the filtration passage, by means of upper edges of said at least one groove. According to the present invention, by forming at least one groove in an inlet side surface of the filtration unit, the filtration passages of the filter can be effectively prevented from being clogged.