Scroll Compressor Dual Oil Channels for Continuous Lubrication
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Solution Overview
Problem
Conventional scroll type compressors face issues with inconsistent oil supply due to outlets for oil feeding being blocked by the orbiting wrap during rotation, leading to reliability concerns and wear due to friction and overheating.
Innovation Solution
The compressor features dual oil channels, a first oil channel and a second oil channel, arranged to ensure continuous oil supply to both inner and outer faces of the orbiting wrap, preventing simultaneous blockage and maintaining lubrication across all regions of the compression chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single oil channel is used to supply oil to the compression chamber, then the structure is simple, but the oil supply becomes inconsistent and outlets get blocked by the orbiting wrap during rotation
Solution Approach 1:
The single oil channel is divided into multiple oil channels (first oil channel and second oil channel) that are spatially separated. This segmentation ensures that when the orbiting wrap blocks one channel outlet, the other channel can still supply oil continuously, resolving the contradiction between structural simplicity and oil supply reliability.
Solution Approach 2:
Different regions of the compression chamber are supplied by different oil channels based on their specific lubrication needs. The first oil channel supplies oil to one region while the second oil channel supplies oil to another region, ensuring that each area receives consistent lubrication regardless of the orbiting wrap's position.
2Device complexity
If the compression assembly is disposed above the driver closer to the discharger, then the structure is compact, but oil supply into the compression assembly becomes difficult
Solution Approach 1:
The oil supply system transitions from a single-dimension vertical supply (from below the driver) to a multi-dimensional supply system where oil channels are distributed in different spatial locations and orientations. This allows oil to reach the compression assembly effectively even when it is positioned above the driver near the discharger.
3Device complexity
If action points of gas force and reaction force do not coincide within the compression assembly, then the structure is straightforward, but the orbiting scroll tilts resulting in lowered efficiency and reliability
Solution Approach 1:
The reaction force mechanism acts as a counterbalancing system that opposes and neutralizes the unbalanced gas force acting on the orbiting scroll. By positioning the reaction force action point to coincide with the gas force action point, the system creates an internal force balance that prevents scroll tilting and maintains operational stability.
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 dual oil channel design ensures consistent oil feeding, reducing wear, overheating, and enhancing reliability by maintaining lubrication, thereby improving efficiency and durability.
Implementation Method 1
a rotatable shaft coupled to the driver and rotating; and a compressing assembly coupled to the rotatable shaft to compress the refrigerant, wherein the rotatable shaft supplies oil to a compression chamber
Data Source
Figure 1(a)~1(b)
Figure 2(a)
Figure 3(a)~3(b)
AI summary
Disclosed is a scroll type compressor including an orbiting scroll including an orbiting wrap and a fixed scroll including a fixed wrap, in which first and second oil channels are respectively constructed to supply oil to inner and outer oil channels formed by the orbiting wrap and the fixed wrap. Thus, the scroll type compressor has an oil channel structure that allows always-oil feeding into to the scrolls.