Scroll Compressor Oil Separation Shield Plate Guide Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional scroll compressors face limitations in oil separation efficiency, leading to oil being discharged through the discharge tube, which affects the performance and reliability of the compressor.
Innovation Solution
A scroll compressor design featuring a shield plate that extends from the support frame to surround the bearing portion, combined with a guide member and oil separation members, deflects gas flow and enhances oil separation by promoting the separation of oil from the refrigerant gas before it reaches the discharge tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the area of the outlet-side opening is set larger than that of the guide passage to lower outflow velocity, then the oil separating function is improved, but the oil separation efficiency is still limited and oil is discharged through the discharge tube
Solution Approach 1:
The outlet-side opening is divided into multiple smaller openings (first outlet openings and second outlet openings) arranged in different regions. This segmentation allows the gas flow to be distributed across multiple paths, enhancing oil separation efficiency by preventing oil accumulation in a single large opening while maintaining sufficient total area for low outflow velocity.
Solution Approach 2:
The patent introduces a vertical dimension to the outlet openings by arranging them at different heights (first outlet openings at a first height, second outlet openings at a second height). This multi-level arrangement creates multiple flow paths with different characteristics, improving oil separation by utilizing both horizontal and vertical flow dynamics to prevent oil discharge.
2Reliability
If the outlet-side opening area is increased to improve oil separation, then outflow velocity is reduced, but oil separation efficiency remains limited
Solution Approach 1:
The outlet-side opening is segmented into multiple smaller openings distributed across different regions and heights. This segmentation maintains a large total opening area for low outflow velocity while creating multiple flow paths that enhance oil separation efficiency through distributed flow dynamics.
Solution Approach 2:
Different regions of the outlet-side opening have different local characteristics (first outlet openings at first height, second outlet openings at second height). This local quality variation allows optimization of oil separation in different flow zones while maintaining overall low outflow velocity through the distributed arrangement.
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 effectively reduces the amount of oil discharged through the discharge tube, improving oil separation efficiency and preventing oil from being discharged due to centrifugal force, thereby enhancing the compressor's performance and reliability.
Implementation Method 1
preventing oil from being discharged due to centrifugal force
Implementation Method 2
enhances oil separation by promoting the separation of oil from the refrigerant gas
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is disclosed a scroll compressor with improved oil separation comprising: a sealed container (2), a scroll compression element (10), a motor element (20) which drives the scroll compression element (10), a support frame (28) having a bearing portion (30) which keeps a shaft (22) of the motor element, a communication path (22C), a shield plate (54) which extends from the support frame to the motor element side to surround the periphery of the bearing portion (30), and a guide member (44) provided at an outlet of the communication path to guide the discharged gas in the direction of the shield plate (54).