Vehicle Cooling Module With Nested Condenser for Stable Heat Rejection
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Solution Overview
Problem
Conventional vehicle cooling systems face inefficiencies due to inadequate refrigerant-condensing performance and compressor load, particularly because the size of the condenser is reduced, leading to insufficient cooling water flow and unstable performance of radiators and condensers.
Innovation Solution
A cooling module with a first radiator, a second radiator, and a second condenser located inside the second radiator, where high-temperature, high-pressure refrigerant passes through the water-cooled second condenser and then the air-cooled first condenser, enhancing refrigerant cooling efficiency and reducing compressor load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the condenser size is reduced to fit within the vehicle cooling system space constraints, then the system compactness is improved, but the refrigerant-condensing performance deteriorates leading to insufficient cooling efficiency
Solution Approach 1:
The second condenser is nested inside the second radiator, utilizing the available space within the radiator structure. This allows the condenser to be housed within an existing component volume without requiring additional external space, thereby maintaining system compactness while preserving adequate condensing performance through proper heat exchange surface area within the nested configuration.
2Device complexity
If a single cooling system is used for both engine and electric parts, then the system complexity is reduced, but the cooling efficiency deteriorates due to temperature difference requirements
Solution Approach 1:
The cooling system is segmented into two separate circuits: a first cooling system for the engine and a second cooling system for electric parts. Each circuit operates independently with its own cooling water flow paths, allowing each to be optimized for its specific temperature requirements without interference from the other, thereby maintaining high cooling efficiency for both systems.
Solution Approach 2:
The second radiator serves dual functions: it acts as a heat exchanger for cooling electric parts through its primary cooling water circuit, and simultaneously serves as a housing structure for the second condenser. This multi-functionality allows the system to maintain separate cooling circuits for different temperature requirements while utilizing shared structural components to reduce overall system complexity.
3Volume of moving object
If the second condenser is placed inside the second radiator, then the space utilization is improved, but the cooling water flow stability deteriorates
Solution Approach 1:
The second radiator is designed with differentiated local structures: a first region that provides stable cooling water flow paths for electric part cooling, and a second region that houses the second condenser. The cooling water channels are specifically configured in the first region to ensure stable flow characteristics, while the condenser is accommodated in the second region without interfering with the primary cooling water circulation, thereby maintaining flow stability while achieving space-efficient placement.
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 improves overall cooling system efficiency, reduces compressor load, and enhances durability by rapidly lowering the specific volume of superheated refrigerant, thereby reducing energy consumption and ensuring stable performance of radiators and condensers.
Implementation Method 1
a second condenser located inside the second radiator to condense the refrigerant through heat exchange with electric part cooling water
Implementation Method 2
a first condenser located in front of the second radiator in the air flow direction to condense a refrigerant through heat exchange with external air
Implementation Method 3
a first radiator for cooling an engine
Implementation Method 4
a second radiator located in front of the first radiator in an air flow direction to cool electric parts
Data Source
AI summary
The present invention relates to a cooling module including: a first radiator for cooling an engine; a second radiator located in front of the first radiator in an air flow direction to cool electric parts; a first condenser located in front of the second radiator in the air flow direction to condense a refrigerant through heat exchange with external air; and a second condenser located inside the second radiator to condense the refrigerant through heat exchange with electric part cooling water, whereby the high temperature and high pressure refrigerant passes through the water-cooled second condenser and then passes through the air-cooled first condenser, thus enhancing the cooling efficiency of the refrigerant to improve the entire efficiency of the cooling system for the vehicle.