Scroll Compressor Non-Orbiting Scroll Elastic Ring Axial Limiting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing scroll compressor designs face challenges in efficiently assembling the non-orbiting scroll, which requires radial centering and axial flexibility while minimizing the compressor's size and assembly complexity.
Innovation Solution
The proposed solution involves a scroll compressor design with a non-orbiting scroll that includes an outer peripheral wall with a step portion, an elastic ring arranged between the outer peripheral wall and the main bearing seat, and a pushing structure, such as an expansion pin, to radially expand the elastic ring and secure it within a circumferential annular groove, thereby limiting axial movement and providing radial centering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the non-orbiting scroll is fixed to the main bearing seat through a lug in cooperation with guide sleeve and fastener, then the axial and circumferential movement of the non-orbiting scroll is limited, but it requires large radial assembly space
Solution Approach 1:
The patent extracts the guide sleeve and fastener components from the conventional mounting structure, replacing them with a simplified elastic ring that directly engages with the circumferential annular groove. This extraction eliminates unnecessary components and reduces radial space requirements while maintaining the axial and circumferential movement limitation functionality.
Solution Approach 2:
The patent employs an elastic ring (flexible element) that can be radially expanded and contracted to facilitate assembly and disassembly. The elastic ring provides the necessary flexibility for installation while maintaining rigid constraint functionality when engaged with the circumferential annular groove, thereby reducing the radial assembly space compared to conventional rigid fastening structures.
2Productivity
If the radial size of the scroll is increased to increase displacement, then the scroll displacement is increased, but the compressor size increases
Solution Approach 1:
The patent changes the mounting approach from radial space occupation to axial space utilization. By using an elastic ring that engages with a circumferential annular groove, the mounting structure utilizes axial depth rather than radial width, allowing increased scroll radial size for greater displacement without increasing the overall compressor footprint.
Solution Approach 2:
The elastic ring is nested within the circumferential annular groove of the main bearing seat, allowing the mounting structure to be contained within the existing compressor geometry. This nesting approach enables increased scroll displacement through radial expansion without requiring additional radial clearance, as the mounting mechanism is embedded within the available axial space.
3Reliability
If the non-orbiting scroll is limited axially through a guide ring or floating ring with fasteners, then the axial movement is limited, but it requires certain radial assembly space and the installation process is difficult and time-consuming
Solution Approach 1:
The patent extracts the guide ring, floating ring, and fastener components from the conventional axial limitation structure, replacing them with a single elastic ring that provides both axial and circumferential constraint in one integrated component. This extraction simplifies the installation process by reducing the number of parts and assembly steps while maintaining reliable axial movement limitation.
Solution Approach 2:
The patent merges the functions of guide rings, floating rings, and fasteners into a single elastic ring component that engages with the circumferential annular groove. This consolidation combines multiple constraint functions into one element, dramatically simplifying the installation process and reducing manufacturing complexity while ensuring reliable axial and circumferential movement limitation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the assembly process, optimizes radial space within the compressor, and enhances the displacement of the scroll compressor without increasing its size, while ensuring reliable radial centering and axial flexibility of the non-orbiting scroll.
Implementation Method 1
an elastic ring arranged between the outer peripheral wall and the axial seat portion and a pushing structure configured for forcing the elastic ring to expand radially outward
Data Source
AI summary
Disclosed are a scroll compressor and a method for assembling a non-orbiting scroll of the scroll compressor. The scroll compressor includes: a scroll mechanism including a non-orbiting scroll which includes a non-orbiting scroll end plate and a non-orbiting scroll wrap and an outer peripheral wall; and a main bearing seat for supporting the scroll mechanism including a main body part and an axial seat portion whose inner peripheral surface is formed with a circumferential annular groove. The scroll compressor further includes an elastic ring provided between the outer peripheral wall and the axial seat portion and a push structure for forcing the elastic ring to expand radially outward, so that a part of the elastic ring in a radial direction is inserted into the circumferential annular groove to limit axial movement of the non-orbiting scroll away from the main bearing seat.