Scroll Compressor Ring Member Guide Pin Stress Dispersion
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Solution Overview
Problem
Scroll compressors face issues with deformation and noise due to stress concentration on guide pins during the revolution and vertical movement of the orbiting scroll, which affects the stability and operation of the compressor.
Innovation Solution
A scroll compressor design featuring a ring member with seating grooves and a stepped part, where the guide pin is maintained in a spaced state from the stepped part, allowing for reduced friction and stress concentration, enabling stable operation and minimizing noise and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the guide pin is positioned to adhere to the sleeve ring to prevent the orbiting scroll from stably revolving, then the stability of revolution is improved, but the pin member is subjected to stress concentration and collision damage
Solution Approach 1:
A bushing member is introduced as an intermediary component between the guide pin and the sleeve ring. The bushing member absorbs the collision impact when the orbiting scroll tilts, preventing direct stress transmission to the guide pin. This mediator allows the guide pin to maintain its stabilizing function while protecting it from damage through the bushing's ability to withstand and dissipate impact forces.
2Reliability
If the end of the wrap strongly adheres to the surface of the mirror plate portion to reduce leakage, then the sealing performance is improved, but the friction is increased causing noise and abrasion
Solution Approach 1:
The surface roughness parameter of the mirror plate portion is optimized to achieve a balance between adhesion and friction. By controlling the surface roughness within a specific range, the wrap end maintains sufficient adhesion for sealing while reducing the friction coefficient, thereby minimizing noise and abrasion during the orbiting scroll's movement.
3Device complexity
If the back pressure chamber is positioned on the bottom surface of the orbiting scroll to simplify structure, then the device complexity is reduced, but the vibration and noise are increased due to tilting
Solution Approach 1:
The bushing member serves as a pre-positioned cushioning element at the location where the guide pin may experience collision during orbiting scroll tilting. By placing this shock-absorbing component beforehand at the critical interface, the design prevents vibration and noise generation during operation while maintaining the simplified bottom-surface configuration of the back pressure chamber.
Data Source
AI summary
The present invention relates a scroll compressor. According to an exemplary embodiment of the present invention, the scroll compressor includes: an orbiting scroll configured to be seated on one surface of a main frame and provided with a plurality of seating grooves along a circumferential direction; a stepped part configured to be formed in the seating groove; a ring member configured to be inserted into the seating groove and have a lower surface adhering to the stepped part; and a guide pin configured to have one end fixed to the main frame and the other end extended in an inside length of the ring member, in which the guide pin has the end maintained in a spaced state from the stepped part.