Scroll Compressor Support Member Dynamics
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Solution Overview
Problem
In scroll compressors, it is challenging to optimize the position where a load is applied to the orbiting scroll, leading to inefficiencies and reliability issues due to uneven moment loads and friction losses.
Innovation Solution
A scroll compressor design that includes a support member movable in multiple directions, including rotational and axial movements, to offset moments applied to the orbiting scroll, with a sub-frame arranged between the rotary shaft and the holding member, allowing for precise load distribution and reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a support member is arranged between the rotary shaft and holding member to support the orbiting scroll, then the orbiting scroll can be supported, but it is difficult to optimize the position where a load is applied from the support member to the orbiting scroll
Solution Approach 1:
The support member is designed to be movable in multiple directions (axial direction and rotational direction) rather than fixed, allowing it to dynamically adjust its position and orientation to optimize load application points on the orbiting scroll while maintaining support stability
Solution Approach 2:
The support function is divided into two independent movable degrees of freedom: axial movement to adjust the position along the shaft and rotational movement to adjust the angular orientation, allowing separate optimization of each aspect of load application
2Device complexity
If the orbiting scroll is movable in only an axial direction by a sliding movement of the support member, then the structure is simple, but it is difficult to optimize the load application position
Solution Approach 1:
The support member transitions from single-direction (axial) movement to multi-directional movement by adding rotational freedom, enabling the system to adapt load application positions without significantly increasing structural complexity
3Stability of the object's composition
If a support member is fixed in position, then the structure is stable, but friction losses increase and efficiency decreases
Solution Approach 1:
The support member is designed with controlled mobility in axial and rotational directions, providing just enough movement freedom to reduce friction losses while maintaining sufficient stability for reliable operation
Solution Approach 2:
The support member's positional parameters (axial position and rotational angle) are made variable rather than fixed, allowing optimization of friction contact points while maintaining structural integrity
Data Source
AI summary
Disclosed herein is a scroll compressor capable of optimizing a position where a load is applied from a support member to an orbiting scroll. The scroll compressor includes a fixed scroll fixed to an inside of a body, an orbiting scroll configured to orbit in engagement with the fixed scroll, a rotary shaft configured to allow the orbiting scroll to orbit, a holding member configured to hold the fixed scroll from a side opposite to the orbiting scroll, and a support member arranged between the rotary shaft and the holding member to support the orbiting scroll by a load applied to a position away from a center of the orbiting scroll.