Stator iron core for an electric machine comprising a medium conveying and heat exchange device
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Solution Overview
Problem
Conventional cooling methods for stator iron cores in electric machines are inefficient, leading to suboptimal heat management and increased energy consumption in wind turbines, as they require large surface heat exchangers and induce significant energy loss due to the diffusion of airflow after heat exchange.
Innovation Solution
The integration of vortex flow separators within the stator iron core, which utilize a jet pipe and vortex flow separation pipe to generate cold and hot airflow streams through a temperature separation process, allowing for efficient heat exchange and cooling without the need for large surface heat exchangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional surface type heat exchangers are used for cooling the stator iron core, then heat exchange function is provided, but the device occupies large space and causes significant energy loss due to airflow diffusion
Solution Approach 1:
The patent combines the heat exchange function with the stator iron core structure itself by integrating cooling channels directly into the core. This merging eliminates the need for separate surface heat exchangers and reduces the diffusion loss of cooling airflow, thereby improving cooling effectiveness while reducing energy consumption.
Solution Approach 2:
The cooling channels are nested within the stator iron core structure, with the cooling medium flowing through channels embedded in the core itself. This nesting approach allows the cooling system to be integrated within the existing structure, reducing space occupation and minimizing energy loss from airflow diffusion.
2Temperature
If conventional surface type heat exchangers are used for cooling the stator iron core, then heat exchange function is provided, but the device occupies large space
Solution Approach 1:
The heat exchange function is merged with the stator iron core structure by integrating cooling channels directly into the core. This eliminates the need for separate surface heat exchangers that occupy large space, while maintaining effective cooling through the integrated channels.
Solution Approach 2:
The cooling channels are nested within the stator iron core structure, allowing the cooling system to be embedded within the existing core geometry. This nesting approach significantly reduces the space occupied by the cooling system while maintaining effective heat exchange.
3Loss of energy
If vortex flow separators are integrated into the stator iron core, then cooling effectiveness is enhanced and energy consumption is reduced, but the device structure becomes more complex
Solution Approach 1:
The vortex flow separators are merged with the stator iron core structure, with the separators and cooling channels being integrated into the core itself. This merging reduces the need for separate cooling components, thereby reducing overall structural complexity while maintaining enhanced cooling effectiveness and reduced energy consumption.
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 enhances the cooling effectiveness of the stator iron core, reduces energy consumption in wind turbines, and allows for self-drying and cooling of the insulation system, improving the overall performance and longevity of the generator.
Implementation Method 1
vortex flow separators configured to generate a heat exchange medium in the stator iron core... compressed airflow flows through the jet pipe to form a spiral airflow, and the spiral airflow flows into the vortex flow chamber in a tangential direction... external airflow of the spiral airflow flows toward the valve port, and is gradually heated to become hot airflow, and then flows out through the valve port; central airflow of the spiral airflow passes by the cone-shaped surface of the valve and flows back, and is cooled to become cold airflow
Data Source
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AI summary
A medium conveying and heat exchange device and a vortex flow separator for an iron core of an electromagnetic device is provided. The vortex flow separator includes a jet pipe and a vortex flow separation pipe, the vortex flow separation pipe includes a vortex flow chamber, and a cold end pipe section and a hot end pipe section located at two ends of the vortex flow chamber, respectively. The jet pipe is in communication with the vortex flow chamber, and compressed airflow flows through the jet pipe to form spiral airflow and flow into the vortex flow chamber in a tangential direction thereof. A cross-sectional area of the cold end pipe section is smaller than a cross-sectional area of the vortex flow chamber, and a cross-sectional area of the hot end pipe section is equal to or greater than the cross-sectional area of the vortex flow chamber. A valve having a cone-shaped surface is arranged inside the hot end pipe section, and after the spiral airflow enters the vortex flow separation pipe, external airflow of the spiral airflow flows toward the valve port, and is gradually heated to become hot airflow and then flows out through the valve port; central airflow of the spiral airflow passes by the cone-shaped surface of the valve and flows back, and is cooled to become cold airflow, and then flows out from the cold end pipe section, to serve as cooling and drying airflow of the input electromagnetic device. In this solution, a device for forming and generating cooling airflow can be arranged in a narrow space, which can improve the cooling and drying effect of the electromagnetic device at any time, and save energy.