Pipe press-fitting connection structure and refrigeration device
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Solution Overview
Problem
Existing pipeline connection methods, such as threaded and press-fitting connections, face issues with material wastage, loosening, and high production costs due to the need for thick walls and additional closing rings, especially when dealing with smaller diameter pipes and high fluid pressures.
Innovation Solution
A press-fitting connection structure with a sealing ring and retaining ring mounted in separate grooves, eliminating the need for a closing ring, and utilizing retaining teeth to securely clamp pipes, suitable for both small and large diameters, enhancing tensile performance and compatibility with common tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closing ring is added to protect the sealing ring from the retaining ring, then the sealing performance is improved, but the device complexity and production cost increase
Solution Approach 1:
The patent removes the closing ring component from the traditional three-ring structure by repositioning the retaining ring into a dedicated groove. This extraction eliminates the need for the closing ring while maintaining sealing performance through the groove-constrained retaining ring configuration.
Solution Approach 2:
The patent segments the functions of the sealing ring and retaining ring into separate grooves within the press-fitting joint. The sealing ring occupies one groove while the retaining ring is constrained in another groove, allowing independent optimization of each component's function without interference.
2Reliability
If the pipe wall thickness is increased to ensure strength and sealing performance after threaded connection, then the connection reliability is improved, but the material consumption and production cost increase
Solution Approach 1:
The patent employs a press-fitting joint with elastic deformation capability that can firmly grip the pipe through radial compression. This flexible connection method achieves strong fixation without requiring thick pipe walls, enabling the use of thinner-walled pipes while maintaining connection reliability.
3Stability of the object's composition
If the pipe wall thickness is increased to achieve fixation between the pipe and press-fitting joint, then the connection stability is improved, but the production and processing cost increase
Solution Approach 1:
The press-fitting joint utilizes elastic deformation of the joint body to create a firm grip on the pipe. This flexible mechanism provides stable fixation without requiring increased pipe wall thickness, thereby reducing manufacturing costs while maintaining connection stability.
4Device complexity
If traditional threaded connection is used to connect pipes, then the connection method is simple, but the pipes are prone to loosening under fluid pressure
Solution Approach 1:
The patent replaces the threaded mechanical connection system with a press-fitting elastic deformation system. The press-fitting joint deforms radially to grip the pipe firmly, providing reliable anti-loosening performance under fluid pressure while maintaining operational simplicity.
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 provides reliable, leak-proof connections that withstand high fluid pressures, reduces material usage, and lowers production costs by eliminating the need for additional closing rings and simplifying assembly, while maintaining structural integrity.
Implementation Method 1
A sealing ring is set in the press-fitting joint, and shrinks to attach to the pipe tightly under the action of a press-fitting tool
Implementation Method 2
the retaining ring shrinks under force to cause the retaining teeth to fit into the outer wall of the pipe to be connected
Data Source
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AI summary
The present invention discloses a press-fitting connection structure for pipeline and a refrigeration device. The press-fitting connection structure for pipeline defines a first mounting groove for accommodating a retaining ring and a second mounting groove for accommodating a sealing ring, making the retaining ring and sealing ring be respectively mounted in different grooves and not easily to move. The first and second mounting grooves are spaced apart, so that the retaining ring will not come into contact with and scratch the sealing ring when the press-fitting connection structure for pipeline is subjected to the force of a press-fitting tool, thereby eliminating a closing ring originally used to protect the sealing ring, which makes assembly be more labor-saving and efficient. By means of setting a plurality of retaining teeth on the inner surface of the retaining ring, the retaining teeth can be more easily buried into the outer wall of the pipe through tip ends thereof, improving the tensile performance of the retaining ring. The retaining ring clamps the pipe through the retaining teeth which are configured in a full circle, reducing its own thickness and making it suitable for small diameter pipes. Of course, the retaining ring can also be used for pipes with large diameter, and has outstanding comprehensive tensile strength.