Round Filter Element End Disk Anti-Rotation Design
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Solution Overview
Problem
Existing round filter elements face challenges in being reliably accommodated within filter housings, particularly in preventing accidental rotation and ensuring flow-tightness during installation.
Innovation Solution
A round filter element design featuring an end disk with a shaped body and a sealing disk, including a receiving depression and opening for a support element, which provides radial and axial support while maintaining flow-tightness, allowing for secure positioning within the filter housing without additional installation space and ensuring no leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple end disk closure is used, then the device complexity is reduced, but the reliability of accommodation and prevention of rotation deteriorates
Solution Approach 1:
The support element is nested within the filter element structure, with the receiving depression formed in the end disk and the support element inserted into it. This nesting approach allows the support function to be integrated into the existing structure without adding external components, thereby reducing overall device complexity while maintaining reliable support and anti-rotation functionality.
Solution Approach 2:
The receiving depression is pre-formed in the end disk during manufacturing, and the support element is pre-positioned within it. This preliminary preparation ensures that when the filter element is installed in the housing, the support function is immediately active, providing reliable accommodation and rotation prevention from the outset without requiring additional installation steps.
2Reliability
If additional positioning elements are added to prevent rotation, then the reliability of accommodation is improved, but the device complexity increases
Solution Approach 1:
The support element serves multiple functions simultaneously: it provides axial support for the filter element, prevents rotation through its asymmetric shape engaging with the receiving depression, and maintains sealing by being integrated with the end disk structure. This merging of multiple functions into a single element improves reliability without proportionally increasing device complexity.
Solution Approach 2:
The support element is designed as a multi-functional component that combines support, positioning, anti-rotation, and sealing functions. This universal approach allows a single element to address multiple accommodation requirements, thereby improving overall reliability while minimizing the increase in device complexity compared to using separate dedicated components for each function.
3Reliability
If the end disk is made flow-tight with additional sealing structures, then the flow-tightness is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The sealing function is merged with the support element and end disk structure. The support element is made from sealing material and is integrated into the end disk assembly, so that the same component that provides mechanical support and anti-rotation also provides the sealing function. This merging eliminates the need for separate sealing structures, thereby maintaining flow-tightness while preserving ease of manufacture.
Solution Approach 2:
The support element is manufactured from sealing material that combines the properties of structural support and flow sealing. This composite material approach allows a single material to fulfill multiple functions, ensuring flow-tightness through the sealing properties of the material while maintaining manufacturing simplicity by using a unified material rather than requiring assembly of multiple different materials.
Data Source
AI summary
A round filter element has a filter medium body flowed through by a fluid to be purified in radial direction relative to a longitudinal axis of the filter medium body. The filter medium body radially encloses an inwardly positioned flow space. An end disk is arranged at an end face of the filter medium body. The end disk has a shaped body axially delimiting the inwardly positioned flow space. The end disk has a sealing disk arranged externally at the shaped body, wherein the sealing disk covers the shaped body and the end face of the filter medium body. The shaped body has a receiving depression that is flow-tight relative to the inwardly positioned flow space. The sealing disk has a receiving opening aligned with the receiving depression of the shaped body. The receiving depression and the receiving opening can receive a support element of a filter housing.