Centrifugal Compressor Gas Liquid Cooling Heat Exchanger
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Solution Overview
Problem
Centrifugal compressors face challenges in achieving efficient and compact cooling, as existing cooling methods rely solely on cooling liquid, which can lead to larger compressor sizes and reduced efficiency.
Innovation Solution
The implementation of a centrifugal compressor design that utilizes both compressed gas and cooling liquid as refrigerants, with a heat exchanger to exchange heat between a cooling gas line and a cooling liquid line, allowing for efficient cooling of internal components while minimizing the compressor's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling liquid alone is used for cooling, then cooling function is provided, but compressor size increases and efficiency decreases
Solution Approach 1:
The patent combines two cooling methods (gas cooling and liquid cooling) into a single integrated cooling system. The gas cooling lines and liquid cooling lines are merged to work simultaneously, allowing the system to achieve better cooling efficiency while maintaining a compact compressor size, thus resolving the contradiction between cooling efficiency and compressor size.
Solution Approach 2:
The cooling system is designed to perform multiple cooling functions using both gas and liquid refrigerants. The gas cooling lines cool specific components while the liquid cooling lines cool other components, creating a multi-functional cooling system that improves overall cooling efficiency without increasing compressor size proportionally.
2Volume of stationary object
If cooling liquid alone is used for cooling, then cooling function is provided, but cooling efficiency decreases
Solution Approach 1:
The patent merges gas cooling and liquid cooling systems to achieve superior cooling efficiency. By combining the evaporative cooling effect of gas with the high heat capacity of liquid, the system achieves better temperature control and cooling efficiency than liquid cooling alone, while maintaining a compact compressor size.
Solution Approach 2:
The patent utilizes both pneumatic (gas) and hydraulic (liquid) cooling mechanisms. The gas cooling lines exploit pneumatic principles for evaporative cooling, while the liquid cooling lines use hydraulic principles for direct heat transfer, creating a hybrid system that maximizes cooling efficiency within a compact form factor.
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 approach enables efficient and compact cooling of the centrifugal compressor, effectively reducing the size and improving performance by utilizing the temperature difference between compressed gas and cooling liquid.
Implementation Method 1
A heat exchanger exchanges heat between the cooling gas line and the cooling liquid line
Data Source
AI summary
A centrifugal compressor includes a motor that rotates a rotary shaft of a compressor impeller, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, an gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a cooling gas line which is connected to the gas bleed port and through which a part of compressed gas compressed by the compressor impeller passes, a cooling liquid line of which at least a part is provided in the motor housing and through which cooling liquid of which the temperature is lower than the temperature of the compressed gas passes, and a heat exchanger that is disposed on the cooling gas line and the cooling liquid line.