Scroll Compressor Injection Valve Assembly Design
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Solution Overview
Problem
Existing scroll compressors have limitations in improving performance and efficiency due to restricted refrigerant discharge from the compression chamber, which only receives refrigerant at suction pressure, and the complex shape of the injection valve assembly makes it difficult to change the port positions and compactify the assembly.
Innovation Solution
The scroll compressor introduces refrigerant at both suction and intermediate pressures to the compression chamber, and the injection valve assembly is simplified and compactified by disposing the fastening member on the introduction chamber side, allowing for flexible port position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the injection valve assembly has a complex shape to ensure proper refrigerant flow control, then the sealing and flow control performance is improved, but the design flexibility and ease of port position adjustment deteriorates
Solution Approach 1:
The injection valve assembly is divided into separate functional components: a valve body for flow control, a valve seat for sealing, and a fastening member for attachment. This segmentation allows each component to be optimized independently - the valve body maintains complex flow control geometry while the simplified fastening structure enables design flexibility and port position adjustment.
2Stability of the object's composition
If the fastening member is disposed on the discharge chamber side, then the structural stability is improved, but the assembly size and compactification deteriorates
Solution Approach 1:
The fastening member is repositioned from the discharge chamber side to the introduction chamber side, utilizing the axial dimension of the compressor to place the fastening mechanism in a different spatial zone. This dimensional repositioning reduces the radial footprint and allows for compactification of the injection valve assembly while maintaining structural stability through proper fastening location.
3Device complexity
If only refrigerant at suction pressure is introduced to the compression chamber, then the simple structure is maintained, but the compression efficiency and performance deteriorates
Solution Approach 1:
An injection valve assembly is introduced as an intermediary component between the introduction chamber and the compression chamber. This intermediary structure enables the selective introduction of refrigerant at intermediate pressure from the introduction chamber into the compression chamber, improving compression efficiency by providing refrigerant at multiple pressure stages while maintaining relatively simple overall structure through modular valve design.
Data Source
AI summary
A scroll compressor capable of improving the performance and efficiency of the compressor by increasing the amount of refrigerant discharged from a compression chamber by introducing not only refrigerant at suction pressure but also refrigerant at an intermediate pressure to the compression chamber of the scroll compressor, capable of freely changing the position of a port by simplifying the shape of an injection valve assembly and by disposing a fastening member on an introduction chamber side, and capable of compactifying the injection valve assembly.