Gearbox Cooling Module with Segmented Fins for Heat Dissipation
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Solution Overview
Problem
Existing gearbox cooling systems are inefficient in heat dissipation due to limited surface area for oil flow and increased distance between the heat source and cooling modules, which hampers effective heat transfer and can be compromised by the use of high viscosity lubricants.
Innovation Solution
A cooling module designed to follow the shape of rotating parts within the gearbox, with an enlarged surface area for improved heat dissipation, incorporating cooling fins and separate spaces for coolant and lubricant to enhance heat transfer and mechanical robustness, while minimizing the distance between the heat source and cooling surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional cooling module is used with limited surface area, then the structure is simple, but heat dissipation efficiency is poor
Solution Approach 1:
The cooling module extends in the longitudinal direction with variable thickness, creating a three-dimensional structure with enlarged surface area. Cooling fins protrude into the gear interior, adding spatial dimensionality to the heat exchange surface, thereby improving heat dissipation efficiency without excessive structural complexity
Solution Approach 2:
The cooling module is divided into distinct functional zones: a first spatial area for coolant flow and a second spatial area for oil contact with cooling fins. This segmentation allows optimized design for each function while maintaining overall structural integrity
2Temperature
If the distance between heat source and cooling surface is reduced, then heat transfer is improved, but the risk of coolant mixing with lubricant increases
Solution Approach 1:
The cooling module is divided into distinct spatial areas: a first spatial area for coolant flow and a second spatial area for oil contact. This segmentation physically separates the two fluid paths, allowing the cooling surface to be positioned close to the heat source while preventing mixing through structural separation
Solution Approach 2:
The cooling module acts as an intermediary structure between the coolant system and the gear oil system. It provides thermal coupling for efficient heat transfer while maintaining physical separation through its segmented spatial design, preventing direct contact between coolant and lubricant
3Reliability
If high viscosity lubricant is used, then lubrication performance is improved, but heat dissipation capability is reduced
Solution Approach 1:
The cooling module creates a dedicated second spatial area where cooling fins contact the lubricant. This segmented design ensures that even high viscosity lubricants can be effectively contacted by the cooling surface, as the fins are positioned to intercept the lubricant flow path within the gear interior
Solution Approach 2:
Cooling fins extend into the three-dimensional space of the gear interior, creating additional contact surfaces that intercept lubricant flow. This dimensional extension ensures adequate heat transfer from high viscosity lubricant without requiring changes to the lubricant's flow properties
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 solution significantly improves heat dissipation by reducing the distance between the heat source and cooling surface, effectively utilizing the gearbox interior for oil flow and maintaining mechanical robustness, even with high viscosity lubricants, thus enhancing the cooling efficiency of gearboxes.
Implementation Method 1
The formation of the cooling module facing the gear interior follows the shape of a rotating part or several rotating parts of the gear... an improvement in the heat dissipation from the interior of the gear unit can be provided by means of an enlarged surface in the spatial region of the oil flow between the part or parts and the housing
Implementation Method 2
cooling fins and / or cooling fingers directed into the interior of the gear being attached to the cast part... a first for a flowing coolant, for example air, water or oil, and a second, located inside the gearbox, for the contact of cooling fins or cooling fingers with oil flowing in the gearbox housing
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
A modular system allows for the combination of multiple covers and modules to create a variety of cooling devices with varying cooling capacities for mounting on a gearbox. These cooling devices are placed onto the gearbox's mounting opening and capture splashing lubricating oil from inside the gearbox, transferring the heat contained in the lubricating oil to an external cooling circuit.