Scroll Compressor Tip Seals Asymmetry Misassembly Detection
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Solution Overview
Problem
In scroll compressors, misassembly of tip seals can occur due to differences in length, leading to potential incorrect embedding, which may not be detected during assembly, resulting in reduced compression performance and reliability due to gas leakage.
Innovation Solution
Embedding tip seals of different lengths in the fixed and orbiting scrolls with varying thicknesses or widths, and forming seal grooves to match these dimensions, ensuring that a shorter seal will protrude and be detectable during rotational torque checks, preventing misassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tip seals of different lengths are embedded in fixed and orbiting scrolls, then the seal performance is improved, but the risk of misassembly increases
Solution Approach 1:
The patent applies asymmetry by making tip seals of different lengths (first tip seal longer than second tip seal) to match the different seal groove depths in fixed and orbiting scrolls. This asymmetric design optimizes sealing performance for each component while creating a detectable difference that prevents misassembly during assembly operations.
Solution Approach 2:
The patent implements preliminary action by designing the tip seals with different lengths before assembly occurs. The longer first tip seal and shorter second tip seal are pre-configured to fit into seal grooves of different depths, creating an inherent mechanical guide that prevents incorrect assembly and enables easy detection of proper installation.
2Manufacturing precision
If tip seal length is varied to prevent misassembly, then assembly detection is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by varying the length of tip seals specifically at different locations (first tip seal for fixed scroll, second tip seal for orbiting scroll) while maintaining uniform thickness and width. This localized dimensional variation provides assembly detection capability without requiring complex manufacturing processes for the entire seal structure.
Data Source
AI summary
A scroll compressor is provided that can reliably prevent a situation in which a product whose performance is degraded due to misassembly of a tip seal is shipped. In the scroll compressor, tip seals of different lengths are embedded in tip surfaces of a fixed spiral wrap of a fixed scroll and an orbiting spiral wrap of an orbiting scroll. Among the tip seals, thicknesses of the shorter tip seals are made thicker than thicknesses of the longer tip seals, and depths of seal grooves in which the tip seals are embedded, respectively, are formed to different depths in correspondence with the thicknesses of the respective tip seals.