Asymmetrical Motor Frame Core Gap Design
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Solution Overview
Problem
Conventional motor frames with concentric main frames and cores limit motor output due to reduced cooling tube gaps when core sizes are increased, restricting efficient heat dissipation and output enhancement.
Innovation Solution
The motor frame design features a main frame with asymmetrical frame formation portions of different radii of curvature, positioning cores below the center of the main frame, allowing for increased core size and output while maintaining the same shaft height, and incorporating cooling tubes with varying arrangement heights to enhance cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the cores are increased in size to increase motor output, then the motor output is improved, but the gap for cooling tubes is reduced
Solution Approach 1:
The patent applies asymmetry by making the gap between the main frame and cores non-uniform in the vertical direction. The gap is larger in the lower portion and smaller in the upper portion, allowing cooling tubes to be strategically positioned in the lower region where larger gap space is available. This asymmetric gap configuration enables both large core size for high output and adequate space for cooling tubes.
Solution Approach 2:
The patent utilizes the vertical dimension by positioning cooling tubes at different heights within the gap. The cooling tubes are arranged in the lower portion of the gap where there is more space, effectively using the vertical dimension to resolve the space constraint. This dimensional approach allows adequate cooling tube placement without reducing core size.
2Power
If the cores are increased in size to increase motor output, then the motor output is improved, but the cooling efficiency deteriorates
Solution Approach 1:
The patent applies local quality by concentrating cooling tubes in the lower portion of the gap where the asymmetric design provides larger space. This localized placement of cooling functionality in the region with adequate space ensures effective heat dissipation from the cores without requiring uniform gap expansion throughout the entire structure.
Solution Approach 2:
The asymmetric gap configuration allows the cooling system to be optimally positioned in the lower region where space is abundant, while the upper region maintains a compact design. This asymmetric arrangement preserves both large core size for high output and adequate cooling capability through strategic placement of cooling tubes in the lower portion.
3Device complexity
If the main frame and cores are made concentric, then the structural simplicity is improved, but the motor output is limited
Solution Approach 1:
The patent maintains the simple concentric arrangement of the main frame and cores horizontally, but introduces vertical asymmetry in the gap configuration. The gap is larger in the lower portion and smaller in the upper portion, creating an asymmetric gap pattern within the concentric structure. This approach preserves structural simplicity while enabling increased core size and improved motor output.
Solution Approach 2:
The patent segments the gap into different regions with different characteristics - a larger lower gap region for cooling tube placement and a smaller upper gap region. This segmentation of the gap space allows the concentric main frame and cores to maintain their simple structure while accommodating both large core size and adequate cooling functionality in different spatial zones.
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 enables increased motor output and improved cooling efficiency by maintaining the same shaft height, allowing for larger components and effective heat dissipation through strategically placed cooling tubes, thereby overcoming the limitations of conventional motor frame designs.
Implementation Method 1
Cooling tubes TC through which a cooling fluid flows may be provided in the gap so that heat generated by operations of the component of the motor may be dissipated
Data Source
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AI summary
A motor frame is disclosed. According to an exemplary embodiment in the present disclosure, a motor frame includes a main frame including a component of a motor provided therein; and a front cover and a rear cover covering an open front surface and an open rear surface of the main frame, respectively, and having cores into which the component of the motor is inserted, respectively, in which a region between the main frame and the cores is asymmetrical in a vertical direction.