Compressor Anti-Rotation Ring Nesting
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Solution Overview
Problem
Existing compressor designs for motor vehicles face issues with incorrect positioning of rings, leading to increased friction, premature wear, noise, and excess power consumption due to the risk of improper alignment of anti-rotation components.
Innovation Solution
The compressor incorporates an anti-rotation assembly with a ring and pin configuration, where the ring is flush with or penetrates into a recess forming an axial clearance, preventing incorrect positioning and reducing friction, and includes features like a recess with a radial clearance, a cup-shaped design, and intermittent fluid ventilation to manage lubrication and prevent fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ring is not extended into the axial clearance space, then the compressor structure is simpler, but incorrect positioning of the ring occurs leading to increased friction and wear
Solution Approach 1:
The ring is nested into the axial clearance space between the fixed part and movable part, with the ring extending partially or fully into this space. This nesting configuration ensures correct positioning of the ring without requiring additional external positioning structures, thereby improving positioning accuracy while maintaining structural simplicity.
2Manufacturing precision
If the ring is extended into the axial clearance space, then positioning accuracy improves, but friction between fixed and movable parts increases
Solution Approach 1:
The ring is designed with specific local properties: it has a circular internal surface and/or circular external surface that contacts the pin, and its extension into the axial clearance space is controlled to provide positioning without excessive friction. The ring's material and surface characteristics are optimized to minimize friction while maintaining positioning accuracy.
3Stability of the object's composition
If the ring is extended into the axial clearance space, then positioning is stabilized, but wear of the pin and ring increases
Solution Approach 1:
The design parameters of the ring are optimized to balance positioning stability and wear resistance. The ring's axial extension length, radial thickness, and material properties are specifically selected to provide sufficient positioning stability while minimizing contact pressure and friction on the pin, thereby extending the service life of both components.
4Manufacturing precision
If the ring is extended into the axial clearance space, then positioning accuracy improves, but noise generation increases
Solution Approach 1:
The ring is designed with thin-walled circular surfaces that can slightly deform to absorb vibrations and reduce noise. The ring's geometry includes rounded edges and smooth transitions that minimize turbulent fluid flow and vibration-induced noise, while maintaining its positioning function.
Data Source
AI summary
The application concerns a compressor comprising a fixed part and a part (10) movable relative to said fixed part, aid movable part (10) being configured to follow an orbital movement around an orbit axis, said compressor further comprising at least one anti-rotation assembly (20), formed of a ring (22) and a pin (24) configured to immobilize said movable part (10) against rotation on itself during its orbital movement, said fixed part and said movable part (10) being separated at least locally by a space forming an axial clearance (J), crossed by said pin (24), said ring (22) penetrating into said space.