System comprising first and second compressors
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Solution Overview
Problem
Existing climate-control systems, such as heat-pump and refrigeration systems, face inefficiencies in compressor operation and fluid circulation, which affect their ability to provide consistent cooling and heating effects.
Innovation Solution
A system comprising first and second compressors, heat exchangers, and expansion devices, with a bypass passageway and valve control, allowing for variable capacity operation and fluid flow management between compressors and heat exchangers, including a flash tank for separating liquid and vapor working fluid, and a control module to adjust compressor capacity based on pressure setpoints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single compressor is used in the climate-control system, then the device complexity is reduced, but the ability to provide consistent cooling and heating effects across varying conditions deteriorates
Solution Approach 1:
The system divides the compression function into multiple independent compressors (first compressor and second compressor) that can operate independently or in combination. This segmentation allows the system to maintain reliable climate control across varying conditions by selectively activating appropriate compressors based on heating or cooling demands, while keeping the overall device configuration manageable through shared heat exchanger infrastructure.
2Reliability
If multiple compressors are used to improve climate control performance, then the cooling and heating effectiveness is enhanced, but the device complexity increases
Solution Approach 1:
The system merges the functions of multiple compressors with shared heat exchanger components (first heat exchanger, second heat exchanger, third heat exchanger) to create an integrated climate-control system. The compressors share common fluid circulation paths and heat exchange infrastructure, which reduces overall system complexity compared to having completely separate compression systems, while still providing enhanced climate control performance through coordinated operation.
Solution Approach 2:
The heat exchangers and fluid circulation system are designed to serve multiple functions: they work with either the first compressor or the second compressor (or both simultaneously) to provide either heating or cooling effects. This multi-functionality allows the system to maintain good climate control performance across varying conditions without requiring completely separate systems for different operating modes, thereby managing device complexity.
3Device complexity
If fixed-capacity compressors are used, then the system simplicity is maintained, but the energy efficiency deteriorates under varying operating conditions
Solution Approach 1:
The system employs variable-capacity compressors that can dynamically adjust their compression capacity based on real-time heating or cooling demands. The first compressor and second compressor can independently modulate their capacity, and the control system can selectively activate or deactivate compressors based on operating conditions. This dynamic capability significantly improves energy efficiency under varying operating conditions compared to fixed-capacity compressors, while the overall control system remains relatively simple through automated based on pressure setpoints.
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
Enhances the efficiency and reliability of climate-control systems by optimizing compressor operation and fluid circulation, ensuring effective heating and cooling performance across varying conditions.
Implementation Method 1
the third heat exchanger may include a flash tank. The first outlet may be a liquid outlet and the second outlet may be a vapor outlet.
Implementation Method 2
a climate-control system such as, for example, a heat-pump system, a refrigeration system, or an air conditioning system, may include a fluid circuit having an outdoor heat exchanger, an indoor heat exchanger
Data Source
Figure 1~2
Figure 3
AI summary
A system may include first and second compressors and first, second and third heat exchangers. The first heat exchanger may receive working fluid discharged from the first and second compressors. The second heat exchanger may be disposed downstream of the first heat exchanger and may provide working fluid to the first compressor. The third heat exchanger may be disposed between the first and second heat exchangers and may include an inlet and first and second outlets. The first outlet may provide working fluid to the second heat exchanger. The second outlet may provide working fluid to the second compressor.