Polyphase Transformer Rectifier With Voided Core For Airflow Cooling
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Solution Overview
Problem
Existing devices for transforming and rectifying polyphase voltage, such as those used in aircraft, face inadequate cooling and require reduction in weight and volume without compromising performance.
Innovation Solution
The design incorporates a polyphase transformer with a voided central zone, a rectifier circuit with heat dissipation units forming a right prism of regular polygonal section, and a fan that channels airflow through the voided central zone to immerse the transformer, along with diffusers to optimize airflow and heat dissipation, while maintaining the same or reduced dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cooling arrangements are used with separate radiators and fans, then cooling function is provided, but device volume and weight increase
Solution Approach 1:
The patent merges the transformer core and heat dissipation radiator into a single integrated structure. The radiator is formed as a hollow prism surrounding the transformer core, eliminating the need for separate cooling components and reducing overall device volume while maintaining effective heat dissipation through the integrated design
Solution Approach 2:
The transformer core structure serves dual functions: electromagnetic transformation and heat dissipation. The hollow prism structure of the radiator allows it to function both as a magnetic circuit component and as a cooling element, with air channels providing thermal management without requiring additional space
2Temperature
If traditional cooling arrangements are used with separate radiators and fans, then cooling function is provided, but device weight increases
Solution Approach 1:
The integration of the radiator with the transformer core eliminates redundant structural components and fastening elements that would be required for separate assemblies. The unified structure reduces material usage and assembly hardware, directly decreasing device weight while maintaining cooling functionality
Solution Approach 2:
The transformer core material and structure are utilized for both electromagnetic function and thermal management. By making the core itself the radiator through the hollow prism design, the invention eliminates the need for additional cooling components, thereby reducing overall device weight
3Temperature
If airflow is not channeled effectively, then device structure is simple, but cooling efficiency is insufficient
Solution Approach 1:
The air channels are integrated directly into the transformer core structure rather than being separate components. The hollow prism configuration inherently provides the cooling passages, eliminating the need for additional channeling devices while ensuring effective airflow through the heat-generating components
Solution Approach 2:
The invention transitions from planar or external cooling surfaces to a three-dimensional hollow prism structure that surrounds the transformer core. This spatial arrangement creates internal air channels that efficiently conduct cooling air through the core, improving heat dissipation without adding external complexity
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 cooling efficiency, reduces weight and volume, and maintains components within safe temperature limits, improving the trade-off between space, weight, and cooling capacity.
Implementation Method 1
a fan (20) that is positioned such that at least some of the airflow (F) produced by the fan flows through the voided central zone (22) of the rectifier so as to immerse the transformer (17)
Implementation Method 2
a rectifier circuit, comprising rectifier diodes (9) and a heat dissipation radiator (8)
Implementation Method 3
the airflow flows through the cooling circuits between the fins (10) of the cooling radiator (8) so as to cool in particular the diodes (9)
Implementation Method 4
The radiator (8) is provided with fins (10) and dissipates the heat generated by the diodes (9)
Data Source
AI summary
Device for transforming and for rectifying polyphase, in particular three-phase, voltage comprising a polyphase transformer comprising a voided central zone, a voltage rectifier circuit that is connected to the transformer and a fan. The voltage rectifier circuit includes at least three heat dissipation units forming a right prism of regular polygonal section comprising a voided central zone, the transformer, the voltage rectifier circuit and the fan being positioned such that at least some of the airflow produced by the fan flows through the voided central zone of the rectifier so as to immerse the transformer.