Electric Machine Bearing Shield with Dual Cooling Openings
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Solution Overview
Problem
Existing electrical machines face challenges in efficiently implementing various types of cooling methods, which are often complex and require significant modifications to adapt to different cooling requirements.
Innovation Solution
The design of an electrical machine with a single end shield that allows for coolant flow through axial and radial openings, enabling efficient air cooling and supporting different cooling configurations, including the use of fans and heat exchangers, to facilitate adaptable and efficient cooling systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single end shield design is used for different cooling types, then adaptability is improved, but cooling efficiency may worsen due to the need to accommodate multiple cooling configurations
Solution Approach 1:
The end shield is designed with multiple openings (axial opening at the axial end and radial opening at the mounting flange) that can accommodate different cooling configurations. The same end shield structure serves universal purposes for both axial cooling and radial cooling types, eliminating the need for different end shield designs while maintaining adaptability to various cooling requirements
Solution Approach 2:
The cooling configuration is made dynamically adaptable by allowing different opening arrangements to be utilized based on the specific cooling type required. The end shield can be configured for axial cooling by utilizing the axial opening, or for radial cooling by utilizing the radial opening, providing dynamic flexibility in cooling system design
2Adaptability or versatility
If multiple openings are provided in the end shield for different cooling configurations, then adaptability is improved, but structural complexity worsens
Solution Approach 1:
A single end shield design with integrated multiple openings serves multiple cooling configurations, reducing the need for separate specialized components. The axial opening and radial opening are both incorporated into the same end shield structure, simplifying the overall system by eliminating the need for different end shield variants
Solution Approach 2:
The end shield is segmented with distinct axial and radial openings that can be independently utilized based on cooling requirements. This segmentation allows different cooling paths to be established through the same component without requiring complex internal structures, maintaining relative simplicity while providing configuration flexibility
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 design allows for simple and effective implementation of various cooling types, improving cooling efficiency while maintaining mechanical stability and ease of installation, and enabling the machine to be adapted to different installation locations and cooling needs.
Implementation Method 1
The electrical machine has a cooling device, depending on the power requirement of the electrical machine, its dimensions, and the ambient conditions.
Implementation Method 2
one and the same first end shield makes it possible to conduct a coolant advantageously through the outer support device into the first section
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to an electric machine (1, 501, 601, 701) which comprises a first bearing shield (2), a first section (3) and a rotor (4), wherein the rotor (4) is rotatably mounted in the first section (3) and in the first bearing shield (2) and extends in an axial direction (70) along a rotation axis (105), wherein the first bearing shield (2) has an inner support device (21), a bearing receptacle (22), which is delimited in radial directions (71, 72) by the inner support device (21), an attachment flange (28), which comprises a chamber (29), an outer support device (23, 24), which connects to the inner support device (21) in radial directions (71, 72), and passage openings (25, 26) on the chamber (29) for cooling the first section (3), wherein the chamber (29) has a radial (27) and an axial opening (30), a bearing shield (2) for an electric machine (1, 501, 601, 701), wherein the bearing shield is the first bearing shield (2), and a series of electric machines (1, 501, 601, 701) comprising at least one first electric machine (1, 601) and at least one second electric machine (501, 701).