Scroll Cover Discharge Holes for Lubricating Oil Expulsion
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Solution Overview
Problem
In scroll compressors, lubricating oil accumulates outside the oil tank due to pressure and centrifugal force, leading to oil loss, reduced refrigeration effect, and decreased energy efficiency.
Innovation Solution
A scroll cover with discharge holes and one-way flow channels is designed to expel excess lubricating oil from the inner to the outer side, preventing its return to the compression chamber and enhancing oil circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If discharge holes are provided in the peripheral wall to expel lubricating oil, then oil accumulation is reduced and energy efficiency is improved, but the structural complexity of the scroll cover increases
Solution Approach 1:
The scroll cover is segmented by adding discrete discharge holes at specific locations rather than implementing a complete drainage system. This selective segmentation allows oil expulsion while maintaining structural simplicity.
Solution Approach 2:
The harmful accumulation of lubricating oil is extracted from the compression chamber through discharge holes in the peripheral wall, removing the harmful substance without requiring complex removal mechanisms.
2Productivity
If multiple discharge holes are arranged evenly distributed at equal center angle intervals, then oil expulsion efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
While the discharge holes are arranged in a symmetric pattern for optimal performance, the specific angular intervals and hole positions can be adjusted during manufacturing to accommodate tolerances, balancing performance with manufacturability.
3Reliability
If one-way flow channels are added to prevent oil return to compression chamber, then oil circulation is enhanced, but device complexity increases
Solution Approach 1:
One-way flow channels act as intermediaries between the compression chamber and the exterior, allowing oil to exit while preventing return. These channels provide a simple directional flow path without requiring complex valve or pump mechanisms.
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
Reduces lubricating oil accumulation, improving refrigeration effect, oil circulation rate, input power, and energy efficiency ratio by ensuring efficient oil management.
Implementation Method 1
under the action of pressure and centrifugal force
Implementation Method 2
under the action of pressure and centrifugal force
Implementation Method 3
allow the fluid from the cavities to be discharged from the cavities to the outer side of the peripheral wall in a one-way manner
Data Source
AI summary
A scroll cover includes a peripheral wall and a chamber formed on the inner side of the peripheral wall. The chamber is configured to accommodate a scroll. At least one discharge hole is provided in the peripheral wall. The discharge hole penetrates the peripheral wall along the thickness direction of the peripheral wall so as to allow fluid from the scroll to be discharged from an inner side of the peripheral wall to an outer side of the peripheral wall via the discharge hole. The disclosure further discloses a scroll compressor, in particular a co-rotating scroll compressor, which uses the scroll cover.