Hermetic Compressor Vibration Tube Mounting
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Solution Overview
Problem
Hermetic compressors face inefficiencies due to heat transfer from hot exhaust gas to the suction line, reducing compressor efficiency, and existing mounting methods for the vibration tube are not robust enough, leading to potential gas leaks.
Innovation Solution
A terminal member with a hollow cylindrical body and protrusion is used to directly mount the vibration tube to the cylinder head, utilizing a stepped housing and welding for secure attachment, which minimizes heat transfer and prevents gas leaks by eliminating the connection between the vibration tube and the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vibration tube is mounted to the cylinder head using existing connection methods, then the assembly is simpler, but the connection is not robust enough and gas leaks may occur due to pressure in the vibration tube
Solution Approach 1:
The connection system is divided into separate functional elements: the stepped housing provides structural support and positioning, the terminal member provides the mounting interface, and the bolt provides fastening. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The terminal member acts as an intermediary component between the vibration tube and the cylinder head. It provides a dedicated mounting interface that distributes mechanical stress and ensures a reliable gas-tight connection without requiring direct attachment between the vibration tube and cylinder head.
2Productivity
If the vibration tube is connected through the body, then the assembly is simpler, but heat transfer from hot exhaust gas to the suction line occurs, reducing compressor efficiency
Solution Approach 1:
The vibration tube mounting is extracted from the body structure and relocated to the cylinder head. This separation removes the thermal coupling between the hot exhaust gas path and the cold suction line, eliminating the unwanted heat transfer that would otherwise occur through the body wall.
Solution Approach 2:
The terminal member serves as a thermal intermediary that isolates the hot exhaust gas path from the cold suction line. By providing a dedicated mounting interface on the cylinder head, it prevents thermal conduction between the vibration tube and the body, maintaining thermal efficiency.
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 configuration enhances the operational efficiency of the compressor by preventing refrigerant heating during exhaust gas discharge and ensures a robust, leak-proof connection, thereby improving the overall refrigeration cycle efficiency.
Implementation Method 1
The terminal member comprises a protrusion which is fitted into the stepped housing. The vibration tube is mounted into said opening. The vibration tube is preferably inserted into the opening and then welded.
Implementation Method 2
The vibration tube is preferably inserted into the opening and then welded. Thus, the tube is prevented from dislodging from the opening.
Implementation Method 3
The stepped housing is a pass-through housing with a narrowing depth, structured so as to make the assembly more robust.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to a compressor (1), which is a hermetic compressor suitable to be used in cooling devices, comprising a casing (2); a cylinder which is arranged in the casing and which enables the refrigerant to be sucked and pumped; a piston which operates in the cylinder; a body (3) which supports the cylinder and the piston; a cylinder head (4) that enables the refrigerant sucked and pumped by means of the movement of the piston to be guided; a valve plate (5) which is disposed between the cylinder and the cylinder head (4); and a vibration tube (6) which provides the discharge of the refrigerant.