Scroll Compressor Guide Ring Bearing Arrangement
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Solution Overview
Problem
Scroll compressors experience significant friction loss due to the relative movement between the guide member and the orbiting scroll and frame, which affects the compressor's efficiency.
Innovation Solution
The integration of bearing members with inner rings fixed to a guide member, which includes pin members connecting the guide member to the bearing members, reduces friction by restricting the orbiting scroll's rotation and minimizing frictional contact between the guide member, frame, and orbiting scroll.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a guide member is disposed between the orbiting scroll and frame to prevent rotation, then the orbiting scroll is prevented from rotating, but friction loss increases due to surface contact between the guide member and moving parts
Solution Approach 1:
A guide member is introduced as an intermediary component between the orbiting scroll and the frame. The guide member includes a guide surface that contacts the orbiting scroll, preventing rotation while reducing direct surface contact friction between the orbiting scroll and frame. The guide member acts as a mediator that transfers the constraint function while minimizing harmful frictional contact.
Solution Approach 2:
The friction characteristics are changed by modifying the contact interface. Instead of direct surface contact between the orbiting scroll and frame, the guide member provides a controlled contact surface with optimized friction properties. The guide surface is designed to maintain necessary friction for rotation prevention while minimizing overall energy loss through reduced contact area and optimized material properties.
2Ease of operation
If the guide member moves relatively with respect to the orbiting scroll and frame, then the guide member can perform its guiding function, but friction loss increases due to continuous surface contact
Solution Approach 1:
The guide member is segmented into distinct functional surfaces: a guide surface for contacting the orbiting scroll, a mounting surface for attachment to the frame, and structural elements connecting them. This segmentation allows each surface to be optimized for its specific function, with the guide surface providing necessary guidance while minimizing frictional contact area.
Solution Approach 2:
The guiding function is achieved by transitioning from direct surface-to-surface contact to a multi-dimensional constraint system. The guide member provides guidance through a combination of surface contact in one dimension and structural constraints in other dimensions, reducing the area of frictional contact while maintaining the guiding function.
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 configuration minimizes friction loss and enhances the compression efficiency of the scroll compressor by stabilizing the orbiting scroll's movement, thereby improving the overall performance.
Implementation Method 1
a friction loss is reduced by connecting a bearing member to a guide member for preventing an orbiting scroll from rotating
Data Source
AI summary
A scroll compressor including a fixed scroll including a fixed wrap, an orbiting scroll including an orbiting wrap facing the fixed scroll to form a compression chamber together with the fixed wrap, and a first receiving groove formed on a second surface, opposite to the orbiting wrap, a frame including a second receiving groove formed on a surface facing the second surface of the orbiting scroll and forming a ring-shaped chamber disposed inside the frame and between the second surface and the surface of the frame, a guide ring disposed in the ring-shaped chamber, and a plurality of roller bearings each including an inner ring fixed to the guide ring, wherein some of the roller bearings are disposed in the first receiving groove and others are disposed in the second receiving groove, and the guide ring and the plurality of roller bearings prevent the orbiting scroll from rotating.