Filter Device Movable Coupling Seal Assembly
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Solution Overview
Problem
Existing filter devices face challenges in designing a connection device that simplifies assembly, ensures a secure seal at high pressure levels, and prevents the accidental use of unsuitable filter elements, while maintaining operational safety and precision alignment.
Innovation Solution
The connection device features a movable coupling part on the filter element and a fixed coupling part on the cover part, with a spring-preloaded axial movement forming a seal, allowing only compatible filter elements to achieve the functional state, ensuring a self-controlling and compact design with precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex connection device is used to ensure secure seal at high pressure, then sealing reliability is improved, but assembly complexity and difficulty increase
Solution Approach 1:
The connection device is divided into separate coupling parts: a first coupling part on the housing and a second coupling part on the cover part. Each coupling part has simplified individual structures with sealing surfaces that mate together, reducing the complexity of each component while maintaining overall sealing reliability through their coordinated interaction.
Solution Approach 2:
The connection device incorporates a spring element that automatically pushes the movable coupling part into engagement with the fixed coupling part when the cover part is mounted. This self-actuating mechanism eliminates the need for manual adjustment or complex actuation systems, achieving reliable sealing through the system's own structural features.
2Ease of operation
If a simple connection device is used to simplify assembly, then ease of assembly is improved, but sealing reliability at high pressure deteriorates
Solution Approach 1:
The spring element is pre-loaded in the disassembled state, storing elastic energy that is automatically released upon assembly to drive the coupling parts into their final sealed position. This preliminary preparation of the spring ensures that the complex sealing action occurs automatically during simple assembly without requiring additional sealing mechanisms.
Solution Approach 2:
The movable coupling part acts as an intermediary element between the housing and cover part, providing a sealed fluid passage connection. This intermediate component with its sealing surface against the fixed coupling part ensures reliable sealing while keeping the overall assembly simple, as the movable coupling part mediates the connection and sealing function in a single integrated element.
3Reliability
If a fixed coupling design is used to ensure safety against mix-ups, then operational safety is improved, but adaptability to different filter elements deteriorates
Solution Approach 1:
The coupling device transitions from a completely fixed design to a hybrid design where the first coupling part on the housing is fixed, providing safety against mix-ups, while the second coupling part on the cover part is movable, enabling adaptation to different filter elements. The movable coupling part can adjust its position while maintaining sealed engagement, combining safety with versatility.
4Ease of operation
If a movable coupling part with spring preloading is used to achieve self-controlling connection, then ease of assembly is improved, but device complexity increases
Solution Approach 1:
The spring element is integrated directly into the movable coupling part, combining the actuation mechanism and the coupling function into a single component. This merging eliminates the need for separate actuation mechanisms and reduces the number of discrete parts, achieving self-controlling automatic engagement while minimizing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design ensures a reliable seal and safe operation even at high pressures, preventing mix-ups and ensuring the correct filter elements are used, while maintaining a simple and compact assembly process.
Implementation Method 1
the arrangement is such that the coupling part can be moved axially and, in the functional state, is in contact with a fixed coupling part of the connection device by spring preloading, forming a seal
Data Source
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AI summary
A filter device includes a filter element (9) received in a housing (1). The housing can be closed by a cover part (3) having fluid ducts (35, 41). A connecting unit is provided to create a fluid-conducting connection between the filter element (9) and an associated fluid duct (35) of the cover part (3). The connecting unit is in the form of a coupling having a movable coupling part (33) creating the fluid connection in the functional state.