Electric Turbocharger Diffuser Plate Cooling for Stator Heat Removal
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Solution Overview
Problem
Existing superchargers face inefficiencies in cooling components like the motor and impeller, leading to performance degradation due to heat from compressed air and motor operation.
Innovation Solution
An electric turbocharger design featuring a diffuser plate thermally coupled to the stator with a flow path for a cooling medium, utilizing materials with varying thermal conductivities to enhance heat transfer and cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling structure is added to cool the motor and impeller, then the temperature of components is reduced, but the device complexity increases
Solution Approach 1:
The diffuser plate is integrated with the cooling structure, merging the diffuser function with the cooling function into a single component. This reduces the number of separate parts while achieving both airflow diffusion and heat removal from the stator
Solution Approach 2:
The diffuser plate serves multiple functions: it acts as both a diffuser for the compressed air flow and as a cooling structure with embedded flow paths for the cooling medium, eliminating the need for separate cooling components
2Temperature
If a cooling structure is added to cool the impeller, then the impeller temperature is reduced, but the device complexity increases
Solution Approach 1:
The cooling structure is merged with the diffuser plate, combining the cooling function with the existing diffuser component rather than adding a separate cooling system for the impeller region
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 design efficiently removes heat from the stator, maintaining optimal performance by reducing thermal resistance and improving cooling efficiency.
Implementation Method 1
a diffuser plate thermally coupled (or thermally connected) to an end surface of the stator
Data Source
AI summary
An electric turbocharger includes a motor including a stator, and a diffuser plate forming a cooling flow path to circulate a cooling medium. The diffuser plate includes a first plate member that is thermally coupled to an end surface of the stator, and a second plate member having a thermal conductivity that is different from a thermal conductivity of the second plate member.