Scroll Compressor End Plate Oil Groove for Easier Assembly
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Solution Overview
Problem
Existing compressors with oil separators face increased processing and assembly complexity due to the formation of decompression mechanisms like spiral grooves or axial holes, leading to higher costs.
Innovation Solution
A scroll compressor design with a lubricating oil groove formed on the end plate's flat surface, allowing for simplified processing and assembly by eliminating the need for precise alignment of grooves and reducing the number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spiral groove is formed in the pin as a decompression mechanism, then the lubricating oil can be decompressed, but the processing becomes difficult and the processing step becomes complicated
Solution Approach 1:
The decompression function is extracted from the pin and transferred to the gasket. The gasket now contains the spiral groove that provides decompression, while the pin returns to a simpler form without the groove, making it easier to manufacture.
Solution Approach 2:
The gasket serves as an intermediary component that bears the decompression groove. This allows the pin to be simplified while still achieving the decompression function through the gasket's spiral groove structure.
2Reliability
If a groove is formed in the gasket as a decompression mechanism, then the lubricating oil can be decompressed, but the processing becomes difficult and assembly complexity increases due to deformation checking requirements
Solution Approach 1:
The decompression groove is extracted from the pin and placed in the gasket. This transfer simplifies the pin while the gasket, being a separate component, can be manufactured with the groove without requiring complex assembly procedures.
3Ease of operation
If a hole is added in the axial direction to guide oil to the groove, then oil can reach the groove, but the processing cost increases due to the need for deep groove processing
Solution Approach 1:
The gasket acts as an intermediary that provides both the groove and the oil guidance function. The radial groove in the gasket naturally guides oil from the axial direction without requiring additional holes or complex processing in other components.
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
Simplifies processing and assembly steps, reducing costs while maintaining effective lubrication and refrigerant sealing.
Implementation Method 1
when the lubricating oil stored in the oil storage chamber provided in the high-pressure region is guided to the low-pressure region having a relatively low pressure, the lubricating oil is decompressed by the decompression mechanism
Implementation Method 2
a compressor including an oil separator that separates a refrigerant and lubricating oil contained in the refrigerant
Data Source
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AI summary
The purpose of the present invention is to reduce costs during processing and assembly. This compressor comprises: a housing 11 serving as an outer shell; a scroll compression mechanism 10 which has an orbiting scroll 13 performing an orbiting motion, and a fixed scroll 12 having an end plate 12a and a wall body 12b standing upright on one surface of the end plate 12a, and which is installed inside the housing 11 and compresses a refrigerant containing lubricating oil; a lid section 11b of the housing 11 which is in surface contact with the other surface 12aa of the end plate 12a; an oil separator 29 which separates lubricating oil from the refrigerant compressed by the scroll compression mechanism 10; and on oil storage chamber 24 which stores the lubricating oil separated by the oil separator 29. A lubricating oil groove through which the lubricating oil discharged from the oil storage chamber 24 circulates is formed in the other surface 12aa of the end plate 12a.