Scroll Compressor Oil Supply Hole and Groove Configuration
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Solution Overview
Problem
Existing scroll compressor designs face challenges in reducing thrust loads and maintaining reliability while minimizing manufacturing costs, as they require complex oil groove and seal configurations that increase component count and processing time.
Innovation Solution
The design incorporates a scroll compressor with a hermetic container, a fixed scroll, a swing scroll, and an electric motor, featuring a single oil supply hole that alternately communicates with first and second grooves on the fixed scroll's end plate surface, reducing the number of components and processing steps by utilizing a fan-shaped groove configuration to manage lubricant oil distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple oil grooves and oil supply holes are provided on the fixed scroll and swing scroll, then the thrust load suppression effectiveness is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple oil supply functions into a single oil supply hole that communicates with multiple oil grooves through internal passages. This merging approach maintains the thrust load suppression effectiveness of multiple oil grooves while reducing the number of external components and simplifying the sealing requirements, thereby resolving the contradiction between force management and device complexity
Solution Approach 2:
The single oil supply hole serves multiple functions by providing lubricant to different oil grooves at different operational phases through its internal passages. This multi-functionality allows one component to replace what would traditionally require multiple separate oil supply holes, reducing device complexity while maintaining effective thrust load suppression
2Reliability
If multiple oil supply holes and corresponding seals are provided, then the lubrication reliability is improved, but the manufacturing cost and processing time increase
Solution Approach 1:
Multiple oil supply passages are merged into a single oil supply hole structure, reducing the number of sealing interfaces from multiple holes to a single location. This maintains reliable lubrication delivery to all necessary grooves while significantly simplifying manufacturing and reducing processing time
Solution Approach 2:
The oil supply hole acts as an intermediary component that distributes lubricant to multiple oil grooves through its internal passages. This intermediary structure consolidates what would otherwise require multiple separate supply points, maintaining reliable lubrication while easing manufacturing constraints
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 effectively reduces thrust loads, minimizes abrasion and refrigerant leakage, and lowers manufacturing costs by simplifying the oil supply system, resulting in a more reliable and cost-effective scroll compressor.
Implementation Method 1
an oil supply hole for guiding the lubricant oil from the through-hole opens at an end plate surface of the swing scroll
Implementation Method 2
a single opening of the oil supply hole alternately communicates with the first groove and the second groove along with swing of the swing scroll
Data Source
AI summary
A scroll compressor includes a hermetic container, a fixed scroll, a swing scroll, a frame, an electric motor, and a shaft. A first groove and a second groove are provided outside a fixed wrap in a radial direction at an end plate surface of the fixed scroll. An oil supply hole for guiding lubricant oil from a through-hole opens at an end plate surface of the swing scroll. A single opening of the oil supply hole alternately communicates with the first groove and the second groove along with swing of the swing scroll.