Scroll Compressor Partitioning for Bearing Lubrication and Gas Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing scroll compressors fail to efficiently supply lubricating oil to the main bearing and drive bearing due to the refrigerant gas bypassing these regions, leading to inadequate lubrication.
Innovation Solution
A scroll compressor design with a partition wall part that includes first and second communication passages to guide a mixed refrigerant containing lubricating oil to the bearing part and refrigerant gas to the compressing part, ensuring efficient lubrication and refrigerant distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the refrigerant gas flows directly from the motor housing to the compressing part through the partition wall, then the refrigerant gas can be efficiently guided to the compressing part, but the lubricating oil cannot be efficiently supplied to the bearing part
Solution Approach 1:
The partition wall is segmented into multiple communication passages: a first communication passage for guiding mixed refrigerant to the bearing part region, and a second communication passage for guiding refrigerant gas to the compressing part. This segmentation allows separate optimization of lubrication and refrigerant flow paths, resolving the contradiction between efficient refrigerant delivery and reliable oil supply to bearings.
Solution Approach 2:
Different regions of the partition wall are assigned different functions: one region (first communication passage) is optimized for oil delivery to the bearing part, while another region (second communication passage) is optimized for refrigerant gas delivery to the compressing part. This local differentiation of function allows each passage to be optimized for its specific purpose without compromising the other.
2Device complexity
If a single communication passage is used in the partition wall, then the structure is simple, but the refrigerant gas bypasses the bearing part region causing inadequate lubrication
Solution Approach 1:
The single communication passage is divided into two separate passages: the first communication passage positioned to guide mixed refrigerant through the bearing part region for lubrication, and the second communication passage positioned to guide refrigerant gas directly to the compressing part. This segmentation maintains structural simplicity while ensuring both lubrication and refrigerant delivery functions are fulfilled.
3Reliability
If the refrigerant gas flows through the bearing part region, then the lubricating oil can be supplied to the bearing part, but the refrigerant gas cannot be efficiently guided to the compressing part
Solution Approach 1:
The communication passages are segmented into two distinct paths: the first passage allows refrigerant flow through the bearing part region for lubrication, while the second passage provides a direct, efficient path for refrigerant gas delivery to the compressing part. This segmentation resolves the trade-off between lubrication and delivery efficiency.
Solution Approach 2:
The partition wall structure serves multiple functions simultaneously: it separates the motor housing and compressor housing, provides pathways for both lubrication (first communication passage) and refrigerant delivery (second communication passage), and maintains structural integrity. This multi-functionality allows the system to achieve both lubrication and efficient refrigerant delivery without compromising either 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
The design reliably guides lubricating oil to the bearing part and refrigerant gas to the compressing part, enhancing lubrication efficiency and preventing heat loss during refrigerant gas transfer.
Implementation Method 1
a first communication passage configured to guide a mixed refrigerant containing a lubricating oil and a refrigerant gas from the first space to a region of the second space, the bearing part being arranged in the region of the second space
Implementation Method 2
a second communication passage configured to guide the refrigerant gas, which is contained in the mixed refrigerant guided to the region of the second space, to the compressing part
Implementation Method 3
a bearing part configured to support the rotary shaft
Implementation Method 4
the oil contained in the refrigerant gas is unable to be efficiently supplied to lubricate the main bearing or the drive bearing
Data Source
AI summary
Provided is a scroll compressor including: a motor configured to revolve an orbiting scroll with respect to a fixed scroll; a rotary shaft rotated about an axis by the motor; a bearing part configured to support the rotary shaft; and a housing. The housing has a partition wall part-partitioning the inner space into a first space and a second space, the motor being arranged in the first space, and the bearing part and a compressing part being arranged in the second space. The partition wall part has a first communication passage and a second communication passage, the first communication passage being configured to guide a mixed refrigerant containing a lubricating oil and a refrigerant gas from the first space to a region of the second space, the bearing part being arranged in the region of the second space, and the second communication passage being configured to guide the refrigerant gas, which is contained in the mixed refrigerant guided to the region of the second space, to the compressing part.