Conical Seal Assembly With Bead for High-Pressure Reassembly
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Solution Overview
Problem
The existing sealing arrangements in air conditioning systems, particularly those using high-pressure cooling mediums like R744 (carbon dioxide), face challenges in maintaining tightness and are difficult to reassemble during repairs due to the risk of leakage.
Innovation Solution
A conical sealing ring with a circumferential bead and a centering ring is used, where the bead is radially inward-facing and the sealing ring is held by a form-fitting groove, enhancing the sealing effect and allowing for easy installation and maintenance without replacing the sealing ring, and the centering ring ensures proper alignment and protection during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sealing ring is used in high-pressure cooling medium systems, then the sealing function is provided, but the risk of leakage increases and reassembly becomes difficult
Solution Approach 1:
The sealing ring is designed with a conical shape that allows it to dynamically adapt its sealing surface during assembly and operation. The conical geometry enables the sealing ring to be easily inserted while automatically positioning itself to provide optimal sealing contact under high pressure conditions.
Solution Approach 2:
The sealing ring is segmented into functional zones: a conical sealing surface for high-pressure sealing, a bead structure for positioning and retention, and a form-fitting groove interface for secure mounting. This segmentation allows each zone to perform its specific function independently, improving both sealing reliability and reassembly ease.
2Ease of manufacture
If a sealing ring without retention features is used, then the assembly is simple, but the sealing ring may detach during operation
Solution Approach 1:
The sealing ring combines multiple functions into a single integrated component: the conical sealing surface provides sealing, the bead provides positioning and retention, and the form-fitting groove provides mechanical attachment. This merging eliminates the need for separate retention features while maintaining assembly simplicity.
Solution Approach 2:
The form-fitting groove acts as an intermediary mechanical feature between the sealing ring and the housing, providing a positive retention mechanism that secures the sealing ring during operation while allowing for straightforward assembly and disassembly.
3Reliability
If the sealing ring is designed to withstand high pressure, then the sealing effect is improved, but the complexity of the sealing structure increases
Solution Approach 1:
The sealing ring utilizes geometric parameter changes, specifically the conical angle and bead dimensions, to enhance sealing performance under high pressure. By optimizing these parameters, the sealing ring achieves effective sealing without requiring additional complex structural features or multiple components.
Data Source
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AI summary
Arrangement (1) for sealing a connection between a first coupling element (2) and a second coupling element (3), wherein the first coupling element (2) has a projection (13) that is at least partially conically shaped and the second coupling element (3) is provided with a recess (14) that is at least partially conically shaped, wherein the projection (13) extends into the recess (14), and wherein an annular space (15) is formed between the projection (13) and the recess (14), in which a sealing ring (4) is arranged, wherein the sealing ring (4) is at least partially conically shaped and has a first end face (5) and a second end face (6), wherein the first end face (5) faces the cooling medium and the second end face (6) faces the environment, characterized in that a circumferential bead (7) is assigned to the second end face (6).which is formed from the sealing ring (4) and which points in the direction of the longitudinal axis (8) of the sealing ring (4).