Oil Strainer Frame Notch for Reduced Flow Resistance
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Solution Overview
Problem
In oil strainers with reduced vertical dimensions, the frame of the filter can interfere with oil inlet and outlet holes, increasing flow resistance due to its proximity to these openings.
Innovation Solution
A notch is incorporated into the frame of the filter at positions where it overlaps with the oil inlet and outlet holes, reducing the likelihood of interference and enhancing the filter's design to accommodate shorter vertical dimensions without obstructing oil flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the vertical dimension of the casing is reduced to accommodate shallow oil pans, then the oil strainer can be installed in limited space, but the frame of the filter may close off the oil inlet and outlet holes, increasing flow resistance
Solution Approach 1:
The patent extracts the interfering portion of the frame by forming a notch that removes the frame material overlapping with the oil inlet or outlet holes. This extraction eliminates the harmful effect of the frame blocking oil flow while preserving the frame's structural function of supporting the mesh portion.
Solution Approach 2:
The frame is designed with non-uniform structure: it has full thickness in most areas to provide strength, but has a localized notch where it overlaps with oil holes. This local modification reduces flow resistance only where necessary without compromising the overall structural integrity of the frame.
2Stability of the object's composition
If the frame is positioned to support the mesh portion in a reduced vertical dimension, then the filter structure remains stable, but the frame interrupts the flow of oil through the inlet and outlet holes
Solution Approach 1:
The notch removes the specific portion of the frame that causes flow interruption while leaving the rest of the frame structure intact to maintain stability. The extracted portion corresponds exactly to the area overlapping with oil inlet or outlet holes when viewed along the oil flow direction.
Solution Approach 2:
The frame exhibits different structural properties in different locations: it is complete and thick in most areas to ensure stability, but has a localized notch where it intersects with oil holes to ensure smooth flow. This spatial variation in structure resolves the contradiction between stability and flow ease.
Data Source
AI summary
An oil strainer 1 has a filter 10 and a casing 20. The casing 20 is provided with an oil inlet hole 43a and an oil outlet hole 33a. The frame 12 of the filter 10 is provided with a notch 12a.