Orbiting Scroll Channel Structure for Mass Reduction and Coating Masking
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Solution Overview
Problem
Existing scroll compressors in vehicles face challenges in reducing the mass of the orbiting scroll to enhance operating efficiency and vehicle range, while also requiring an efficient method for applying wear-resistant surface coatings to specific surfaces without increasing costs or complexity.
Innovation Solution
The orbiting scroll incorporates a mass reduction feature in the form of an inwardly indented channel in its circumferential surface, which also serves as a retaining feature for a mask during coating, allowing for a simpler and more efficient coating process without the need for additional equipment or complex setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the mass of the orbiting scroll is reduced to improve operating efficiency and vehicle range, then power consumption is reduced, but the structural integrity and durability may be compromised
Solution Approach 1:
The orbiting scroll is segmented into multiple functional zones: a full-mass central portion containing the spiral groove and compression chambers, and a reduced-mass peripheral portion with strategic material removal. This segmentation allows the critical load-bearing areas to retain full mass for structural integrity, while non-critical areas have reduced mass to lower power consumption and improve vehicle range.
Solution Approach 2:
Different regions of the orbiting scroll have different mass characteristics tailored to their specific functions. The central region maintains higher mass for structural strength and sealing, while the peripheral region features reduced mass through strategic material removal. This local quality differentiation optimizes the balance between power consumption and structural integrity.
2Manufacturing precision
If a mask is used to apply wear-resistant surface coating selectively to the spiral structure, then coating precision is improved, but the coating process complexity and setup requirements increase
Solution Approach 1:
The mask structure is merged with the orbiting scroll by directly attaching it to the peripheral edge of the scroll's peripheral portion. This integration eliminates the need for separate mask positioning fixtures and complex alignment mechanisms, reducing coating process complexity while maintaining precise coating application to the spiral structure through the mask's openings.
Solution Approach 2:
The mask is designed to be self-positioning through its attachment to the orbiting scroll's peripheral edge. As the scroll rotates during operation, the mask automatically maintains its relative position, eliminating the need for external positioning systems or complex setup procedures. The mask serves itself by utilizing the scroll's own motion and structure for accurate coating application.
Data Source
AI summary
An orbiting scroll of a scroll compressor includes a platter wall having a first face including a spiral structure projecting therefrom, a second face having a coupling structure configured to couple the orbiting scroll to a drive mechanism of the scroll compressor, and a circumferential surface connecting the first face to the second face in an axial direction of the platter wall. The orbiting scroll includes a mass reduction feature provided as an inwardly indented channel formed in the circumferential surface. The channel is further configured to form a retaining feature for retaining a rim of a mask during a process of coating the spiral structure of the first face with a surface coating.