Fuel Filter Water Separator Movable Mounting
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Solution Overview
Problem
Current filter devices face challenges in efficiently integrating and replacing both water separators and solid removal elements, requiring improvements in design to facilitate easier maintenance and longer replacement cycles while accommodating errors in assembly.
Innovation Solution
The filter device design includes a case with a movable water separator and a solid removal element, connected by passage connecting members that allow for separable and adjustable positioning, enabling the water separator to move within a larger radial distance than the element, and a holding member that guides the water separator's central axis towards the case's central axis, allowing for independent replacement and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the water separator and solid removal element are integrated and replaced together, then the replacement process is simplified, but the replacement cycle is shortened and maintenance efficiency is reduced
Solution Approach 1:
The filter device is segmented into two independently replaceable modules: the solid removal element and the water separator. The element can be removed from the case while the water separator remains in place, allowing selective replacement based on which component requires maintenance. This segmentation enables the solid removal element to be replaced without disturbing the water separator, thereby extending the overall replacement cycle and improving maintenance efficiency.
2Manufacturing precision
If the water separator is made movable with respect to the case, then assembly errors are tolerated and alignment is improved, but the device complexity increases
Solution Approach 1:
The water separator is designed with movable capability relative to the case through the holding member structure. The holding member includes a positioning surface that guides the central axis of the water separator toward the central axis of the case, allowing automatic alignment during assembly. This dynamic positioning capability tolerates manufacturing errors in the O-rings and other components without requiring high-precision assembly, while the movement is constrained enough to maintain structural simplicity.
3Adaptability or versatility
If the passage connecting members are made separable, then the element can be replaced independently, but the fluid passage integrity may be compromised
Solution Approach 1:
The passage connecting members are designed with nested structures that maintain fluid passage integrity during separable connections. The O-rings are positioned within grooves and sealing surfaces that ensure proper alignment and sealing when the element is connected to the water separator. The nested design allows the element to be detached and reattached while maintaining the integrity of the fluid passage through the sealing mechanisms.
Data Source
AI summary
The filter device includes a case, an element, and a water separator. The case accommodates the element and the water separator. The element removes solid particulates from the fuel. The element can be replaced by opening the case. The water separator removes water content from the fuel. The water separator is held in the case. The water separator is movable relative to the case. The water separator is movable within a movable range. The element and the water separator are provided with a passage connecting member for connecting a fuel passages.