Rotary Electrical Machine Cooling Chamber Segmentation
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Solution Overview
Problem
The existing cooling systems in rotary electrical machines face issues with mechanical strength, efficiency, and sealing due to deformation of the tubular ring during shrink-fitting with the stator body, which affects heat dissipation and overall performance.
Innovation Solution
A separation wall is added between the cooling liquid intake and outlet within the tubular ring to prevent deformation, ensuring a secure contact surface and effective heat dissipation, with securing units to retain the wall and facilitate liquid circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling chamber is created in the tubular ring, then heat dissipation is improved, but the ring deforms in the shrink-fitting area causing mechanical strength and sealing problems
Solution Approach 1:
The cooling chamber is segmented from the tubular ring by creating a separate inserted piece rather than being integrated into the ring structure. This segmentation allows the cooling chamber to function independently without causing deformation to the tubular ring during shrink-fitting, thus maintaining mechanical strength while achieving heat dissipation.
2Temperature
If a cooling chamber is created in the tubular ring, then heat dissipation is improved, but sealing problems occur due to ring deformation
Solution Approach 1:
By segmenting the cooling chamber as a separate inserted piece rather than integrating it into the tubular ring, the ring structure remains intact and undistorted during shrink-fitting. This ensures proper sealing surfaces are maintained while the separate cooling chamber still provides effective heat dissipation functionality.
3Strength
If the stator body is shrink-fitted in the tubular ring, then mechanical strength is improved, but the ring deforms causing efficiency loss
Solution Approach 1:
The cooling chamber is separated from the tubular ring as an independent inserted component. This allows the stator body to be shrink-fitted into the tubular ring for mechanical strength without the cooling chamber causing deformation. The separate cooling chamber maintains proper geometry for efficient coolant flow and heat dissipation.
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 mechanical strength, efficiency, and sealing, maintaining a good contact surface and improving heat dissipation while preventing ring deformation, thus optimizing the cooling process.
Implementation Method 1
a tubular ring, the said stator body being shrink-fitted in the said tubular ring
Implementation Method 2
a cooling chamber for the circulation of cooling liquid delimited by an outer periphery of the said tubular ring and an inner periphery of the said bearing
Implementation Method 3
The heat which is generated by the circulation of the current through the winding of the stator can be discharged to a cooling circuit
Data Source
AI summary
The invention relates mainly to a rotary electrical machine including: a bearing (12); a stator (11) including a stator body (13); and a tubular ring (27), said stator body (13) being mounted braced in the ring (27); a cooling chamber (28) for circulating coolant liquid defined by an outer periphery of said tubular ring (27) and an inner periphery of said bearing (12); said bearing (12) including an intake and an outlet of coolant liquid, said machine including a separating wall (42) for separating said cooling chamber (28) extending between said intake and said outlet of coolant liquid, said separating wall (42) being added relative to said tubular ring (27) and including at the ends thereof attachment members for holding said wall (42) on said tubular ring (27).