Modular Cooling Tube Couplings for Electrical Machine Laminated Cores

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing electrical machines with laminated cores face challenges in efficient cooling, as traditional cooling methods are not effectively adaptable to different machine sizes and curvatures, leading to suboptimal cooling performance.

Innovation Solution

The integration of connectable copper tubes within the laminated core of electrical machines, utilizing various coupling types such as T-shaped and L-shaped configurations, allows for a standardized cooling system that can be easily assembled and adjusted for different sizes and curvatures, ensuring efficient fluid flow and sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional cooling methods are used in electrical machines with laminated cores, then the cooling system can be implemented with simple structure, but the cooling performance is suboptimal and not adaptable to different machine sizes and curvatures

Engineering Contradiction:
Improvecooling performanceVSAvoidadaptability to different machine sizes and curvatures
Core Design Contradiction:
TemperatureVSAdaptability or versatility

Solution Approach 1:

The cooling system is divided into multiple standardized coupling components (T-shaped couplings, L-shaped couplings, straight couplings) that can be segmented and reconfigured to match different machine geometries. Each coupling contains cooling channels that can be assembled in various configurations to adapt to different machine sizes and curvatures while maintaining effective cooling performance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The standardized coupling components are designed to serve multiple functions: they provide cooling channels, enable adaptation to different geometries, and facilitate easy assembly. The same basic coupling types can be combined in different arrangements to suit various machine sizes and curvature requirements, making the cooling system universally applicable.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Temperature

If cooling tubes are integrated into the laminated core, then cooling effectiveness is improved, but the complexity of assembling and adjusting for different sizes increases

Engineering Contradiction:
Improvecooling effectivenessVSAvoidassembly complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling tube system is segmented into standardized coupling components that can be independently manufactured and then assembled. This segmentation allows each component to be optimized for cooling effectiveness while simplifying the overall assembly process, as the modular couplings can be connected in predefined configurations rather than requiring custom fabrication for each application.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling components are designed with standardized dimensions and connection interfaces that allow parameter changes (such as number of couplings, arrangement configuration) to adapt to different machine sizes without changing the fundamental component design. This enables scaling the cooling system for different applications while maintaining assembly simplicity.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If standardized coupling components are used to connect cooling tubes, then adaptability to different machine configurations is improved, but the number of connection points and potential leakage risks increases

Engineering Contradiction:
Improveadaptability to different configurationsVSAvoidleakage risk
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The coupling components are pre-designed and pre-assembled with integrated sealing solutions before installation. The sealing elements are incorporated into the coupling structure itself, ensuring that leakage prevention is built into the design from the outset rather than added as a separate step. This preliminary action reduces the risk of leakage while maintaining adaptability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The standardized couplings incorporate multiple functions including cooling fluid passage, mechanical connection, and sealing in a single integrated component. This multi-functionality reduces the number of separate connection points needed compared to traditional systems, thereby reducing overall leakage risk while maintaining adaptability to different configurations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 enables uniform and effective cooling of electrical machines by allowing for flexible connection of cooling tubes through standardized couplings, enhancing cooling performance and adaptability across different machine sizes and configurations.

Implementation Method 1

cooling tubes (3) which are connectable with one another via couplings (40, 41, 42)... During operation of the electrical machine, cooling fluid can be caused to flow through the cooling tubes

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS10749389B2Method and electrical machine with couplings in the cooling system
Publication Date: 2020.08.18 SIEMENS AG
  • US10749389B2 patent drawing
  • US10749389B2 patent drawing
  • US10749389B2 patent drawing

AI summary

An electrical machine includes a laminated core, cooling tubes arranged within the laminated core, and couplings that interconnect the cooling tubes, where a first coupling type has a T-shaped branch and where, in particular, two couplings interconnect two adjacent cooling tubes to one another.