Scroll Compressor Shell Mounting for Fixed Scroll Positioning
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Solution Overview
Problem
In scroll compressors, achieving positional accuracy for the fixed scroll without forming a peripheral wall for fixing it to the frame is challenging, as conventional methods require precise alignment to ensure proper refrigerant compression.
Innovation Solution
A scroll compressor design that includes a shell with a first inner wall surface and a protrusion to position and fix the fixed scroll directly to the shell, eliminating the need for a peripheral wall on the frame, thereby allowing for accurate positioning and expansion of the refrigerant intake space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the fixed scroll is fixed to the tip of the peripheral wall of the frame, then the positional accuracy of the fixed scroll is ensured, but the device complexity and weight increase due to the peripheral wall structure
Solution Approach 1:
The invention extracts and eliminates the peripheral wall component from the frame structure. Instead of fixing the fixed scroll to the tip of the peripheral wall, the scroll is directly fixed to the inner wall surface of the shell, removing the intermediate peripheral wall structure while maintaining positioning accuracy through direct attachment.
Solution Approach 2:
The invention merges the function of the peripheral wall into the shell structure itself. The shell's inner wall surface directly provides the fixing surface for the fixed scroll, combining what were previously separate components (peripheral wall and shell) into a unified structure that reduces overall complexity.
2Manufacturing precision
If the fixed scroll is fixed to the tip of the peripheral wall of the frame, then the positional accuracy of the fixed scroll is ensured, but the weight of the frame increases
Solution Approach 1:
The invention removes the peripheral wall component that added weight to the frame structure. By fixing the fixed scroll directly to the shell's inner wall surface without the intermediate peripheral wall, the overall weight of the stationary frame structure is reduced while maintaining the necessary positional accuracy.
3Manufacturing precision
If a peripheral wall is formed for fixing the fixed scroll, then the positional accuracy is ensured, but the processing complexity of the main frame increases
Solution Approach 1:
The invention extracts the peripheral wall feature from the frame manufacturing process. By eliminating the need to form a peripheral wall and instead using the existing shell inner wall surface for fixing the fixed scroll, the processing complexity and manufacturing steps are reduced.
Solution Approach 2:
The invention merges the fixing function into the basic shell structure, eliminating the need for separate peripheral wall formation processes. This integration simplifies the manufacturing workflow by reducing the number of distinct processing steps required.
Data Source
AI summary
A scroll compressor includes a frame holding an orbiting scroll configured to slide, a fixed scroll configured to form a compression chamber together with the orbiting scroll, and a shell accommodating the frame and the fixed scroll. The shell includes a first inner wall surface and a first protrusion protruding from the first inner wall surface to position the fixed scroll, and the fixed scroll is fixed to the first inner wall surface.