Sealed Compressor Base Welding Structure for Vibration Noise
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Solution Overview
Problem
In sealed compressors, the deformation of the base member between welding spots leads to gaps between the bottom shell and the mounting surface, causing sympathetic vibration and increased noise during operation.
Innovation Solution
The base member is designed with a vertically cylindrical shape, featuring a mounting surface with a central opening and slits, and welding spots extending along the circumference to prevent deformation, ensuring a secure joint without gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding spots are formed at intervals along the circumferential direction of the opening rim, then the base member can be joined to the compressor main body container, but deformation occurs in the portions between neighboring welding spots due to welding heat
Solution Approach 1:
The patent applies preliminary action by forming reinforcing ribs on the mounting surface of the base member before welding. These ribs are positioned between the welding spots and serve as pre-established structural elements that resist deformation during the welding process, preventing gaps from forming between the bottom shell and mounting surface.
2Strength
If welding is performed to join the base member and compressor main body container, then strong bonding is achieved, but sympathetic vibration occurs due to gaps formed by deformation
Solution Approach 1:
The reinforcing ribs are formed in advance on the mounting surface before welding takes place. These ribs create a rigid structure that prevents deformation and gap formation during welding, thereby eliminating the source of sympathetic vibration and noise while maintaining strong welding bonds.
3Reliability
If multiple welding spots are used to secure the compressor main body container, then reliable joining is achieved, but the base member becomes prone to vibration and noise
Solution Approach 1:
The patent applies local quality by adding reinforcing ribs at specific locations between the welding spots on the mounting surface. These localized structural enhancements provide additional rigidity precisely where needed to prevent deformation and vibration, without requiring changes to the overall welding configuration or adding complexity to the entire base member structure.
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 effectively prevents gaps and sympathetic vibration, reducing noise by maintaining a strong, gap-free joint between the base member and the compressor main body container.
Implementation Method 1
the base member is joined to the bottom shell by a plurality of welding spots formed at intervals in circumferential direction of the opening
Data Source
AI summary
A sealed compressor includes a base member that is welded to a compressor main body container and that supports the compressor main body container. The compressor main body container includes a bottom shell. The base member includes a mounting surface on which the bottom shell is mounted. At the center of the mounting surface, an opening is formed into which the central part of the bottom shell is fit. The base member is joined to the bottom shell by a plurality of welding spots formed at intervals in the circumferential direction of the opening. The plurality of welding spots are formed to extend for a predetermined length in the circumferential direction of the opening and are positioned in between the outer peripheral border of the mounting surface and the opening rim of the opening.