Compressor cooling system
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Solution Overview
Problem
Existing compressor cooling systems in climate-control systems face inefficiencies in heat transfer and fluid management, leading to suboptimal performance and reliability in providing cooling and heating effects.
Innovation Solution
The system incorporates a compressor with a shell, compression mechanism, and motor, along with heat exchangers and a pump powered by pressure differential, utilizing multiple fluid flow paths and heat transfer relationships to optimize working fluid circulation and heat exchange, including a bypass conduit and control valves for fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional compressor cooling system is used, then the structure is simple, but the heat transfer efficiency is insufficient
Solution Approach 1:
The cooling system is divided into multiple independent flow paths (first cooling flow path for the compression mechanism and second cooling flow path for the motor), allowing each path to be optimized separately for its specific thermal requirements while maintaining overall system reliability
Solution Approach 2:
The heat exchanger is disposed within the compressor shell, nesting the heat transfer component inside the existing compressor structure. This improves heat transfer efficiency without requiring a completely separate external cooling system, thereby maintaining structural simplicity
2Reliability
If multiple fluid flow paths are added to improve heat transfer, then the heat transfer efficiency improves, but the device complexity increases
Solution Approach 1:
The pump serves dual functions by providing pressurized working fluid to both the first and second cooling flow paths through a single component. This merging of functions improves heat transfer efficiency to multiple components without proportionally increasing device complexity
Solution Approach 2:
The working fluid serves multiple purposes: it cools the compression mechanism through the first cooling flow path, cools the motor through the second cooling flow path, and maintains compression chamber pressure. This multi-functionality improves overall heat transfer efficiency without requiring separate systems for each function
3Use of energy by moving object
If the pump is powered by pressure differential, then the energy consumption is reduced, but the fluid flow control precision decreases
Solution Approach 1:
The pump is powered by the pressure differential of the working fluid itself rather than an external power source. The high-pressure working fluid from the compressor automatically drives the pump, which then delivers fluid to the cooling paths. This self-service mechanism reduces energy consumption while maintaining adequate flow control through the natural pressure gradients in the system
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 the efficiency of heat transfer and fluid management, improving the reliability and effectiveness of the compressor in climate-control systems by optimizing the circulation and heat exchange processes.
Implementation Method 1
a heat exchanger disposed within the shell and in a heat transfer relationship with the motor. The heat exchanger may receive fluid from the second inlet
Implementation Method 2
The pump may include a rotor powered by a pressure differential between the inlet and the first outlet
Implementation Method 3
The first heat exchanger may receive compressed working fluid from the outlet of the compressor
Data Source
AI summary
A system may include a compressor, a heat exchanger, an expansion device, and first and second working fluid flow paths. The compressor may include a compression mechanism and a motor. The heat exchanger may receive compressed working fluid from the compressor. The expansion device may be disposed downstream of the heat exchanger. The first working fluid flow path may fluidly connect the heat exchanger and the expansion device. The second working fluid flow path may be disposed downstream of the heat exchanger and may fluidly connect the heat exchanger with the compressor. The second working fluid flow path may provide compressed working fluid to the compression mechanism and to the motor.