Co-Rotating Scroll Compressor With Rolling Radial Compliance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compressors in climate-control systems face challenges in achieving efficient and reliable operation, particularly in ensuring effective and efficient cooling and heating effects, due to limitations in compressor design and radial compliance mechanisms.
Innovation Solution
A co-rotating scroll compressor design featuring a shell assembly, compression mechanism, driveshaft, and multiple bearings that allow for radial compliance through rolling contact between the third bearing and a stationary surface, enabling the second compression member to move radially relative to the first, supported by a third axis parallel to the first axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed radial support structure is used for the second compression member, then the structural simplicity is improved, but the ability to handle varying operational conditions deteriorates
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed radial support structure with a dynamic rolling contact mechanism. The third bearing enables the second compression member to move radially along a curved path during operation, allowing the system to adapt to varying operational conditions while maintaining reasonable structural complexity.
2Device complexity
If radial compliance is not implemented, then the device complexity is reduced, but the mechanical stress increases
Solution Approach 1:
The dynamic rolling contact mechanism allows the second compression member to comply radially under load, distributing mechanical stress more effectively while maintaining manageable device complexity through the use of a third bearing.
3Adaptability or versatility
If a third bearing with rolling contact is added to enable radial compliance, then the adaptability to varying operational conditions is improved, but the device complexity increases
Solution Approach 1:
The third bearing acts as an intermediary element that enables radial compliance between the second compression member and the stationary surface. This mediator component provides the necessary adaptability while keeping the overall device complexity manageable through its well-defined rolling contact mechanism.
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
Enhances operational efficiency and reliability by allowing radial compliance, reducing mechanical stress, and improving the compressor's ability to handle varying operational conditions.
Implementation Method 1
The third bearing supports the second compression member for rotation about the second axis. The surface supports the third bearing relative to the shell assembly wherein the third bearing is in rolling contact with the surface
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A compressor may include a shell assembly, a compression mechanism, a driveshaft, a first bearing, a second bearing, a third bearing, and a surface supporting the third bearing. The compression mechanism may include first and second compression members. The driveshaft may be coupled to the first compression member to rotate the first compression member relative to the second compression member. The first bearing may support the driveshaft for rotation about a first axis. The second bearing may support the driveshaft for rotation about the first axis. The third bearing defines a second axis. The third bearing may support the second compression member for rotation relative to the first compression member. The surface may support the third bearing such that the third bearing is able to roll along the surface to move the second compression member and the second axis in a radial direction relative to the first compression member.