High-low Temperature Radiator for Engine Machinery Cooling
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Solution Overview
Problem
Existing radiators for internal combustion engine engineering machinery face inefficiencies due to small temperature differences between water and oil, leading to complex oil pipeline layouts, high failure rates, and reduced cooling effectiveness, as they often rely on air cooling modes that struggle with the temperature ranges of hydraulic and transmission oils.
Innovation Solution
A high-low temperature radiator is designed with a divided core body and chamber system, where cooling liquid is segregated into low-temperature and high-temperature streams, allowing for optimized heat exchange with air, and subsequently used to cool hydraulic and transmission oils, enhancing efficiency and simplifying installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air cooling mode is adopted for hydraulic oil cooler due to small temperature difference between water and oil, then cooling function is maintained, but oil pipeline becomes long and complicated, oil resistance increases, space layout becomes difficult, design becomes difficult and failure rate increases
Solution Approach 1:
The patent merges the water cooling function and oil cooling function into a single integrated radiator unit. The radiator core body simultaneously serves as the heat exchange medium for both the cooling water system and the hydraulic oil system, eliminating the need for separate oil coolers and complex oil pipelines while reducing the overall device complexity and failure rate
Solution Approach 2:
The radiator is designed with multi-functionality to perform both water cooling and oil cooling tasks. By incorporating oil cooling channels within the radiator core body structure, the same device handles multiple cooling functions that would traditionally require separate components, thereby simplifying the overall system architecture
2Temperature
If air cooling mode is adopted for hydraulic oil cooler, then cooling is provided, but oil resistance increases and space layout becomes difficult
Solution Approach 1:
The patent combines the oil cooling function directly into the radiator structure by integrating oil cooling channels within the core body. This merging eliminates the need for long external oil pipelines and complex space layouts, as the oil cooling occurs in-situ within the compact radiator assembly
3Temperature
If water outlet temperature is around 97°C and hydraulic oil inlet temperature is 95°C, then temperature difference is too small for effective heat exchange, but air cooling mode requires complex oil pipeline layout
Solution Approach 1:
The radiator core body is segmented into distinct water cooling channels and oil cooling channels with separate flow paths. The core body is divided into multiple sections including a water inlet chamber, water outlet chamber, and dedicated cooling channels for both water and oil, allowing independent optimization of each cooling circuit while maintaining compact integration
Solution Approach 2:
Different regions of the radiator core body are designed with different thermal characteristics and flow patterns optimized for their specific cooling medium. The water cooling channels and oil cooling channels have different geometries and heat exchange surface areas tailored to their respective temperature requirements and flow rates
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
The radiator achieves a significant temperature drop in cooling liquids, with the low-temperature liquid providing enhanced cooling for hydraulic and transmission oils, reducing engine water outlet temperature and improving overall cooling efficiency by up to 2.5 to 3 times, while simplifying the design and reducing failure rates.
Implementation Method 1
the heat is exchanged into natural air by a fan
Implementation Method 2
the heat is exchanged into natural air by a fan
Implementation Method 3
the low-temperature cooling liquid is used for cooling high-temperature hydraulic oil and high-temperature transmission
Data Source
AI summary
The present disclosure relates to a novel high-low temperature radiator for internal combustion engine engineering machinery, which is provided with a water inlet pipe, a water inlet chamber, a radiator core body, a water outlet chamber, a water separation plate and a water outlet pipe which are sequentially communicated, the water inlet pipe is communicated with the water inlet chamber, and the water inlet chamber is communicated with the radiator core body; the radiator core body is divided into two parts: a radiator low-temperature core body and a radiator high-temperature core body; the water outlet chamber is divided into two parts: a low-temperature water outlet chamber and a high-temperature water outlet chamber, and the water outlet pipe is divided into a low-temperature water outlet pipe and a high-temperature water outlet pipe according to the core body and the water chamber from which the cooling liquid flows.