Scroll Compressor Bypass Holes Over-Compression Loss
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Solution Overview
Problem
Existing scroll compressors with axial through design face issues of over-compression loss due to differing compression gradients between compression chambers, leading to reduced overall efficiency, as the same cross-sectional area of bypass holes in both chambers cannot effectively address the disparity in compression gradients.
Innovation Solution
The design incorporates larger cross-sectional areas and more numerous bypass holes in the compression chamber with a larger compression gradient, strategically positioned to alleviate over-compression by varying the interval and number of bypass holes between the first and second compression chambers, ensuring a larger cross-sectional area for the second compression chamber's bypass holes within a specific angle range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same cross-sectional area of bypass holes is used in both compression chambers, then the device structure is simple, but over-compression loss occurs due to differing compression gradients
Solution Approach 1:
The patent applies local quality by configuring bypass holes with different cross-sectional areas in different compression chambers. Specifically, the first bypass hole in the first compression chamber has a first cross-sectional area, while the second bypass hole in the second compression chamber has a second cross-sectional area that is different from the first. This allows each compression chamber to have bypass characteristics tailored to its specific compression gradient, preventing over-compression loss while maintaining reasonable structural complexity.
2Loss of energy
If bypass holes are added to reduce over-compression, then over-compression loss is reduced, but the device complexity increases
Solution Approach 1:
The patent implements local quality by providing different bypass hole configurations in different compression chambers. The first compression chamber receives a first bypass hole with a first cross-sectional area, while the second compression chamber receives a second bypass hole with a second cross-sectional area. This differentiated approach allows targeted reduction of over-compression loss in each chamber based on its specific compression gradient characteristics, rather than applying a uniform configuration that would increase complexity without targeted effectiveness.
Data Source
AI summary
A scroll compressor includes a discharge port formed at a central portion thereof, a pair of two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions formed at each interval along a movement path of each compression chamber in the both compression chambers. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval. The first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than the first interval of a first bypass portion belonging to the other compression chamber.