Stator Nozzle Cooling Through an Axial Gap for Uniform Heat Dissipation
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Solution Overview
Problem
Conventional stators in electromechanical converters face inefficiencies in cooling due to uneven temperature distribution and thermal imbalance, resulting from inadequate cooling medium flow, which leads to material property degradation and reduced performance.
Innovation Solution
The stator incorporates a cooling system with nozzles that accelerate the cooling medium into an axial gap between two core bodies, creating parallel flow paths for targeted cooling, ensuring uniform temperature distribution and efficient heat dissipation by directing the coolant to areas of highest heat output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling channels are used in the core, then cooling is provided, but uneven temperature distribution and thermal imbalance occur
Solution Approach 1:
The patent applies local quality by directing cooling medium through nozzles to specific regions of the core based on local heat generation patterns. The cooling system provides targeted cooling to areas with higher heat output (such as winding heads) while reducing cooling in cooler regions, thereby achieving uniform temperature distribution across the entire core.
Solution Approach 2:
The patent implements dynamics by using a distributed nozzle system that can adaptively direct cooling medium flow based on operating conditions. The multiple nozzles are positioned to dynamically adjust the cooling pattern, allowing the system to respond to varying heat generation patterns and maintain optimal temperature distribution under different load conditions.
2Loss of energy
If cooling medium flow is increased to improve cooling, then heat dissipation improves, but material properties are exhausted earlier due to higher thermal stress
Solution Approach 1:
The patent applies local quality by providing targeted cooling to specific high-heat regions through strategically positioned nozzles. This localized approach improves heat dissipation efficiency where needed while avoiding excessive cooling in already cool regions, thereby preventing premature material exhaustion and extending core service life.
Solution Approach 2:
The patent implements parameter changes by optimizing the cooling medium flow parameters (velocity, distribution pattern, temperature) to achieve efficient heat removal without creating excessive thermal gradients. By carefully controlling these parameters, the system achieves effective cooling while minimizing thermal stress that would otherwise accelerate material degradation.
3Temperature
If nozzles are added to create accelerated jet flow, then targeted cooling of winding heads is achieved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the cooling system into multiple independent nozzle units distributed across the core surface. Each nozzle independently targets specific regions, allowing the complex cooling task to be broken down into simpler, modular components. This segmented approach achieves effective winding head cooling while keeping individual nozzle structures simple and manageable.
Solution Approach 2:
The patent implements universality by designing the nozzle system to serve multiple functions: cooling winding heads, cooling core regions, and providing uniform temperature distribution across the entire stator. This multi-functional nozzle design reduces the need for separate cooling systems for different components, thereby limiting the increase in overall device 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 solution achieves balanced temperature distribution and enhanced cooling efficiency, preventing overheating and material degradation, while allowing for a cost-effective coolant circulation system that efficiently cools both the winding system and core.
Implementation Method 1
the cooling medium flows out downstream of the nozzle as an accelerated jet
Implementation Method 2
the cooling system is provided for the flow of a cooling medium... efficient heat dissipation
Data Source
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AI summary
The invention relates to a stator (STT) of an electromechanical converter, comprising a cooling system (CLS), a winding system (WDS) and a core (CRE), wherein the core (CRE) has cutouts (RZS), in which winding strands (WWR) of the winding system (WDS) are disposed. According to the invention, for uniform cooling of the stator, the cooling system has at least one nozzle (FTO), through which the cooling medium (CMD) flows, so that the cooling medium (CMD) is discharged as an accelerated jet, and part of the winding system (WDS) is hit by the accelerated jet from the nozzle, the core (CRE) having at least a first body (PM1) and a second body (PM2), the first body (PM1) being spaced apart from the second body (PMB) by an axial gap (AGB), and the cooling medium (CMD) being combined in the axial gap (AGP) from various flow paths (PFP) guided in parallel with each other. The invention also relates to a method for simulation and to a corresponding computer program product.