Scroll Compressor Multi-Hole Injection for Longer Refrigerant Dwell
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Solution Overview
Problem
The existing scroll compressor's gas injection method has limitations due to a short injection time and limited refrigerant injection efficiency, as it uses a single injection hole, restricting the improvement of refrigerating cycle performance.
Innovation Solution
The design incorporates multiple injection holes (first, second, third, and fourth injection holes) along the spiral flow passage, with specific opening and closing mechanisms to extend the injection time and allow refrigerant injection into both low and high-pressure compression chambers simultaneously, using a single injection passage connected to each hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single injection hole is used in the scroll compressor, then the device complexity is reduced, but the injection time is shortened and refrigerant injection efficiency is limited
Solution Approach 1:
The single injection hole is segmented into multiple injection holes (first, second, third, and fourth injection holes) positioned at different locations along the spiral flow passage. This segmentation allows refrigerant to be injected at multiple points simultaneously, extending the overall injection time and improving injection efficiency without significantly increasing device complexity
2Device complexity
If a single injection hole is used in the scroll compressor, then the device complexity is reduced, but the refrigerant injection efficiency is limited
Solution Approach 1:
The injection system is segmented into multiple injection holes positioned at different locations along the spiral flow passage. This allows parallel injection of refrigerant into multiple compression chambers simultaneously, significantly improving refrigerant injection efficiency and productivity while maintaining relatively simple device structure
Solution Approach 2:
The injection system transitions from a single-point injection (one-dimensional) to multi-point injection along the spiral flow passage (adding spatial distribution dimension). This dimensional change enables simultaneous injection into multiple compression chambers, improving injection efficiency without proportionally increasing complexity
3Duration of action of moving object
If multiple injection holes are provided at different locations along the spiral flow passage, then injection time is extended and refrigerant injection efficiency is improved, but the device complexity increases
Solution Approach 1:
The injection system is divided into multiple injection holes positioned at different locations along the spiral flow passage. Each injection hole serves a specific compression chamber, allowing extended injection time through spatial distribution while keeping the overall structure relatively simple and manageable
4Productivity
If multiple injection holes are provided at different locations along the spiral flow passage, then refrigerant injection efficiency is improved, but the device complexity increases
Solution Approach 1:
The injection system is segmented into multiple injection holes positioned at different locations along the spiral flow passage. This segmentation enables parallel refrigerant injection into multiple compression chambers, significantly improving injection efficiency while maintaining a relatively simple and modular device structure
Solution Approach 2:
The injection system transitions from single-point to multi-point injection by adding spatial distribution along the spiral flow passage. This dimensional enhancement improves refrigerant injection efficiency and productivity while avoiding proportionally complex device architecture
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 enhances refrigerant injection efficiency, improves cooling and heating performance, and reduces production costs by increasing the time for injection and allowing simultaneous injection at different locations within the compressor.
Implementation Method 1
at least one injection passage provided at the fixed scroll to inject refrigerant into the plurality of compression chambers
Data Source
AI summary
A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a casing, a fixed scroll, an orbiting scroll, and an injection passage. The fixed scroll may further include a first injection hole and a second injection hole formed on a spiral flow passage, and a third injection hole and a fourth injection hole formed on the spiral flow passage at a position inwardly rotated by about 360 degrees from the first injection hole and the second injection hole along the spiral flow passage. The first injection hole and the third injection hole may be formed on an outer lane of the spiral flow passage, and the second injection hole and the fourth injection hole may be formed on an inner lane of the spiral flow passage.