Muffler Threaded Pipe Connection Stability
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Solution Overview
Problem
Existing muffler designs for exhaust systems face challenges in providing a simple yet stable connection between exhaust gas duct pipes and walls, often resulting in relative motion and potential gastightness issues.
Innovation Solution
A thread-like meshing or screw connection is established between the exhaust gas duct pipe and the wall using an outer threaded formation, with a helical bulge providing a stable and gastight connection, and additional welding in a second connection area ensures stability against external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple connection method is used between exhaust gas duct pipe and wall, then ease of manufacture is improved, but connection stability deteriorates
Solution Approach 1:
The connection system is segmented into two distinct connection areas: a first connection area using thread-like meshing for simple assembly, and a second connection area using welding for enhanced stability. This segmentation allows each connection method to be optimized for its specific function while working together to solve the overall contradiction.
Solution Approach 2:
The connection approach transitions from a single-plane connection to a multi-dimensional solution by implementing connections at different locations (first and second connection areas) and using different connection methodologies (thread-like meshing and welding) to address both ease of manufacture and connection stability.
2Ease of operation
If a simple connection method is used between exhaust gas duct pipe and wall, then ease of operation is improved, but relative motion between components increases
Solution Approach 1:
The connection system is segmented into two distinct connection areas: a first connection area using thread-like meshing for simple assembly, and a second connection area using welding for enhanced stability. This segmentation allows each connection method to be optimized for its specific function while working together to solve the overall contradiction.
Solution Approach 2:
The connection approach transitions from a single-plane connection to a multi-dimensional solution by implementing connections at different locations (first and second connection areas) and using different connection methodologies (thread-like meshing and welding) to address both ease of manufacture and connection stability.
3Ease of manufacture
If thread-like meshing is used for connection, then ease of manufacture is improved, but resistance to external forces deteriorates
Solution Approach 1:
The connection system is segmented into two distinct connection areas: a first connection area using thread-like meshing for simple assembly, and a second connection area using welding for enhanced stability. This segmentation allows each connection method to be optimized for its specific function while working together to solve the overall contradiction.
Solution Approach 2:
The connection system uses a composite approach combining two different connection methodologies (thread-like meshing and welding) in a unified structure. This composite connection system leverages the advantages of both methods: the ease of assembly from thread-like meshing and the high strength from welding, thereby resolving the contradiction between ease of manufacture and resistance to external forces.
Data Source
AI summary
A muffler for an exhaust system includes an exhaust gas duct pipe (20) and a wall (26). The wall (26) is connected to the exhaust gas duct pipe (20) in a first connection area (24) thereof by a thread meshing.