Scroll Compressor Inlet Screen for Misalignment Bridging
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Solution Overview
Problem
Existing scroll compressors face challenges in effectively bridging the distance between the inlet fitting and the suction duct, leading to misalignment issues and potential particulate entry into the compressor, which affects the efficiency and reliability of refrigerant compression.
Innovation Solution
A suction screen member with a dome-shaped screen structure and a cylindrical liner, bonded to a tubular extension and mounting flange, provides a flexible solution by accommodating misalignment through axially extending slots or a chamfered end, ensuring a secure bridge between the inlet fitting and suction duct while screening out particulates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid suction screen member is used to bridge the inlet fitting and suction duct, then structural strength is improved, but misalignment issues occur due to assembly inaccuracies
Solution Approach 1:
The suction screen member incorporates a flexible section that can dynamically adjust its shape to accommodate misalignment between the inlet fitting and suction duct, transforming a rigid structure into a semi-flexible one that maintains both strength and alignment reliability
Solution Approach 2:
The flexible section is constructed using thin-walled tubular structure that can bend and deform elastically, allowing the suction screen member to adapt to assembly inaccuracies while maintaining its bridging function between inlet fitting and suction duct
2Reliability
If the suction screen member is made flexible to accommodate misalignment, then alignment reliability is improved, but structural strength decreases
Solution Approach 1:
The suction screen member is divided into distinct sections: rigid mounting flange, flexible tubular section, and rigid screen structure. This segmentation allows each part to perform its optimal function - the rigid parts provide strength and mounting stability, while the flexible tubular section accommodates misalignment
3Device complexity
If a simple tubular extension is used without screen structure, then device complexity is reduced, but particulate filtration capability is lost
Solution Approach 1:
The suction screen member merges multiple functions into a single integrated component: the tubular extension provides structural bridging, the flexible section accommodates misalignment, and the screen structure filters particulates. This consolidation reduces overall device complexity while maintaining all necessary capabilities
4Object-affected harmful factors
If the screen structure is made complex to improve filtration, then particulate screening capability is improved, but manufacturing complexity increases
Solution Approach 1:
The screen structure utilizes porous or mesh-like material that provides effective particulate filtration while maintaining a relatively simple geometric form. This porous screen can be easily manufactured and integrated into the tubular extension without requiring complex machining or assembly processes
Data Source
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AI summary
A suction screen member is provided that bridges the inlet port and entrance port between a compressor housing and a suction duct in a scroll compressor. The suction screen member also serves to screen fluid entering the scroll compressor to prevent particulates from entering the scroll compressor. The suction screen member may be formed from only two components, including a sheet metal body that has a folded over section to provide a mounting segment that mounts into the inlet fitting for the outer housing and a tubular extension. Crimping of the folded over segment can secure the screen thereto. Other embodiments may employ welding for screen attachment.