Elliptical Compressor Shell With Offset Terminal Pin
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Solution Overview
Problem
Current compressor housing designs are not optimized for miniaturization, leading to increased size and weight, which affects energy consumption, cost, and market competitiveness.
Innovation Solution
A compact, lightweight compressor housing design featuring an upper cover and lower shell with elliptical cross-sections, where the terminal pin bore centerline is angled relative to the major axial centerlines, and incorporating offset welding planes and retaining grooves to prevent collisions and maximize space, allowing for snap-fitting and efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a symmetrical design is used for the compressor housing with aligned centerlines, then the production process and processing technology are simplified and the appearance is aesthetically pleasing, but the space utilization is not optimal and the external dimensions and weight are increased
Solution Approach 1:
The patent applies asymmetry by deliberately misaligning the terminal pin bore centerline with the major axial centerline of the elliptical cross-section. The terminal pin bore centerline is positioned at an angle (10°-45°) relative to the major axial centerline, creating an asymmetric layout that optimizes space utilization while maintaining manufacturing feasibility. This asymmetric arrangement allows for more compact housing dimensions compared to a symmetrical design.
2Ease of manufacture
If a symmetrical design is used for the compressor housing, then the processing technology is simplified, but the weight of the compressor is increased
Solution Approach 1:
The asymmetric positioning of the terminal pin bore relative to the major axial centerline enables a more compact housing design with reduced material requirements. By optimizing the spatial arrangement of components through asymmetric layout, the overall housing volume and consequently the weight are reduced while maintaining structural integrity and manufacturing feasibility.
3Ease of manufacture
If the terminal pin bore centerline is aligned with the major axial centerline, then the design is symmetrical and simple to manufacture, but the space utilization is not optimal
Solution Approach 1:
The patent deliberately positions the terminal pin bore centerline at an angle (10°-45°) to the major axial centerline, creating an asymmetric configuration that maximizes space utilization within the elliptical housing. This angular offset allows for more efficient arrangement of internal components and reduces the overall housing footprint compared to a centered alignment.
Data Source
AI summary
A sealed compressor housing includes a tubular top cover and a tubular lower housing each with an elliptical horizontal cross section that can be snap-fitted together. Major and minor axial centerlines of the top cover and the lower housing respectively coincide with each other. A terminal pin is provided on the lower housing and is disposed axially symmetrical about a centerline of the terminal pin. A portion of the top face on the side of the terminal pin and a front side of the top face are higher than a rear side thereof. A bottom outer surface of the lower housing has a smooth ellipsoid shape. An angle is formed between the centerline of the terminal pin and the major axial centerlines.