Elastic Sealing Ring for Filter Pipe Tolerance Compensation
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Solution Overview
Problem
Existing filter systems and sealing devices for fluids in motor vehicles and industrial engines lack an effective sealing mechanism that compensates for manufacturing tolerances and operational vibrations, leading to reduced sealing efficiency and increased mounting and dismounting efforts.
Innovation Solution
An elastic sealing ring with flexible, bendable sections that are pressed against the pipe exterior by pressure differences, creating enhanced sealing surfaces and compensating for tolerances and vibrations, while reducing contact pressure when not in operation to prevent swelling and sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic sealing sections with high reset force are used to ensure effective sealing, then sealing efficiency is improved, but mounting and dismounting effort increases
Solution Approach 1:
The sealing ring incorporates elastic sealing sections that dynamically adjust their sealing force based on operating conditions. During operation, fluid pressure causes the sealing sections to bend and press against the pipe exterior, maintaining effective sealing. During mounting and dismounting, when no fluid pressure is present, the sealing sections return to their original position with reduced contact pressure, facilitating easier installation and removal.
Solution Approach 2:
The sealing effect is achieved by changing the physical state and position of the sealing sections under different pressure conditions. The elastic sealing sections transition from a relaxed state during mounting/dismounting to a compressed, bent state during operation, optimizing both ease of operation and sealing efficiency at different stages.
2Reliability
If high contact pressure is applied to ensure sealing, then sealing efficiency is improved, but swelling and sticking of the sealing ring increases
Solution Approach 1:
The sealing ring uses elastic sealing sections that dynamically adjust contact pressure based on fluid pressure. During operation, the sealing sections are pressed against the pipe with sufficient force to ensure sealing. When the system is unpressurized, the contact pressure automatically reduces, preventing swelling and sticking of the sealing material.
3Stability of the object's composition
If rigid sealing structure is used to maintain sealing under vibration, then sealing stability is improved, but adaptability to manufacturing tolerances and position changes decreases
Solution Approach 1:
The sealing ring incorporates flexible elastic sealing sections that can bend and deform to adapt to manufacturing tolerances and operational position changes. These flexible sections maintain stable sealing by conforming to the pipe exterior while accommodating vibrations and position variations, combining adaptability with sealing stability.
4Ease of operation
If softer sealing sections are used to reduce mounting effort, then ease of operation is improved, but sealing effectiveness under pressure decreases
Solution Approach 1:
The sealing sections are designed to be softer and more flexible for easy mounting, but under fluid pressure they bend and press against the pipe exterior with sufficient force to ensure effective sealing. The dynamic response to pressure compensates for the softer material, maintaining sealing effectiveness while facilitating ease of operation.
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
The solution improves sealing efficiency, reduces the effort required for mounting and dismounting, and ensures separation of clean and raw fluid sides, allowing for automatic closure and discharge of fluid openings, thus enhancing the overall performance and usability of the filter system.
Implementation Method 1
The sealing sections are strongly pressed against the exterior wall of the pipe by means of propulsion forces resulting from pressure differences at the opposing sides of the sealing sections
Implementation Method 2
the sealing sections can have a considerably softer design, that means with less reset force, than the sealing sections of sealing rings known from prior art without reducing the sealing effect
Data Source
AI summary
A sealing device (24) of a filter system (10) for filtering fluids, in particular of a motor vehicle, with a sealing ring (26) is described. The sealing ring (26) serves to seal a pipe (16), in particular a central pipe of a filter housing (12), that penetrates through a flange-sided opening (18) of an end plate (20), in particular of an end element of a filter element (14). The sealing ring (26) features a central section (58) that connects it with the end plate (20). The sealing ring (26) features in its axial direction on both sides of the central section (58) elastic sealing sections (60, 62) which cause each a reduction of the inner diameter of the sealing ring (26) compared with the central section (58). The elastic sealing sections (60, 62) extend freely flexibly and can be bent away from the central section (58) such that they can be pressed—when the pipe (16) is mounted—by means of prevailing fluid pressures—when the filter system (10) is operated—in radial direction against the exterior wall of the pipe (16).