Fluid Filter Element With Self-Aligning Drainage Sealing
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Solution Overview
Problem
Existing filter systems for fluids such as oil or fuel are difficult to mount and align properly, leading to inefficiencies in fluid flow and sealing.
Innovation Solution
A filter system with a housing comprising two sequentially connected housing parts and a filter element featuring a central pipe with an axially slidable positioning element that interacts with a counter element at the connector socket to ensure rotational alignment, allowing for precise positioning of a pin to seal-tightly close fluid drainage bores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a filter element is designed with a central pipe and positioning element for rotational alignment, then the ease of operation during mounting is improved, but the device complexity increases
Solution Approach 1:
The positioning element with contour and the counter element with counter contour automatically align the filter element during the mounting process. As the filter element is pushed into the housing, the contour of the positioning element slides along the counter contour of the counter element, causing the filter element to rotate automatically until the contours are parallel, achieving self-alignment without additional tools or operations
Solution Approach 2:
The positioning element is pre-configured with a specific contour shape that determines the rotational alignment position. Before the mounting process completes, the contour geometry is already designed to guide the filter element into the correct rotational position, ensuring that when the filter element is fully inserted, the pin is automatically positioned over the drainage bore
2Ease of operation
If the positioning element is made axially slidable, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The positioning element is designed to be axially slidable rather than fixed, allowing it to move dynamically during the mounting process. This axial slidability enables the positioning element to adjust its position as the filter element is inserted, maintaining contact with the counter contour throughout the insertion process and ensuring continuous guidance until the final aligned position is reached
Solution Approach 2:
The contour of the positioning element and the counter contour of the counter element are designed with asymmetric geometries that only match in one specific rotational orientation. This asymmetric design ensures that the axial sliding motion naturally guides the filter element into the correct rotational position, where the contours are parallel, and prevents misalignment even with variations in manufacturing tolerances
Data Source
AI summary
A filter system for fluid has a housing with first and second fluid connectors and first and second housing parts sequentially arranged along a longitudinal axis and connected to each other. A filter element with a filter medium body and a central pipe arranged inside is arranged in the housing. The second housing part has a connector socket connected to the second fluid connector. The filter element has first and second end discs at axially opposed end faces. The central pipe adjoins a central opening of the second end disc. A positioning element is axially slidable inside the central pipe. With the filter element mounted as intended, the second end disc is arranged at the connector socket of the second housing part. The filter element is rotationally aligned by the positioning element interacting with a counter element of the connector socket. A filter element for the filter system is provided.