Heat-dissipation Frame Assembly with Annular Fins and Air-guide Shield
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Solution Overview
Problem
Conventional heat-dissipation frame assemblies for motors are inefficient due to blocked airflow and increased cost and thickness, which hinder effective heat dissipation and do not meet modern design requirements for lightweight and miniaturization.
Innovation Solution
A heat-dissipation frame assembly featuring a motor frame with gradually decreasing annular heat-dissipation fins and an air-guide shield that directs heat-dissipating airflow from the second end portion to the first end portion, preventing blockage and enhancing heat dissipation while maintaining waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multiple airflow-driving devices are disposed at the same side of the motor frame to generate heat-dissipating airflow, then heat dissipation is enhanced at the localized area, but the airflow cannot flow smoothly along the external annular channels to the other side of the motor frame, resulting in incomplete heat dissipation
Solution Approach 1:
The patent transitions from a single-side airflow generation approach to a multi-dimensional airflow distribution system. By disposing airflow-driving devices at both ends of the motor frame and utilizing external annular channels that wrap around the motor frame, the system creates three-dimensional airflow paths that enable comprehensive heat dissipation coverage across the entire motor frame surface.
Solution Approach 2:
The patent divides the heat dissipation system into multiple independent airflow channels and multiple airflow-driving devices. Each airflow-driving device at different ends of the motor frame generates independent airflow that travels through separate external annular channels, allowing parallel heat dissipation operations that improve overall airflow coverage and efficiency.
2Temperature
If conventional heat-dissipation frame assemblies are designed with sufficient thickness to accommodate heat dissipation structures, then heat dissipation capacity is improved, but the motor frame thickness increases, conflicting with modern design requirements for lightweight and miniaturization
Solution Approach 1:
The patent utilizes external annular channels that extend around the motor frame in the circumferential direction, effectively increasing the heat dissipation surface area without increasing the motor frame thickness. This three-dimensional channel configuration allows heat dissipation structures to occupy space in the radial and circumferential dimensions while maintaining a compact axial profile.
Solution Approach 2:
The external annular channels are nested around the motor frame, with the heat dissipation structure occupying the space between the motor frame outer surface and the channel walls. This nesting arrangement allows the heat dissipation system to be integrated around the motor frame without adding significant thickness to the overall assembly.
3Device complexity
If heat-dissipating airflow is generated from one side of the motor frame, then the structure is simplified, but the airflow is blocked by the annular heat-dissipation fins and cannot reach the farther side of the motor frame, reducing heat dissipation effectiveness
Solution Approach 1:
The patent segments the airflow generation function into multiple independent airflow-driving devices positioned at both ends of the motor frame. This segmentation allows each device to independently drive airflow through its designated external annular channel, ensuring that heat dissipation is effective across the entire motor frame surface without requiring complex inter-connected airflow paths.
Solution Approach 2:
The patent creates external annular channels that wrap around the motor frame in the circumferential direction, enabling airflow to travel around the motor frame and reach areas that would be inaccessible from a single-side approach. This multi-dimensional channel configuration maintains structural simplicity while dramatically improving airflow coverage and heat dissipation effectiveness.
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
The solution effectively guides heat-dissipating airflow through external annular channels, improving heat dissipation efficiency and reducing the motor frame's thickness, thus addressing the inefficiencies and cost issues of conventional designs.
Implementation Method 1
at least one airflow-driving device (13) is disposed at the second end portion, and used for generating at least one heat-dissipating airflow (F)
Implementation Method 2
a plurality of annular heat-dissipation fins (112), spaced from each other in the longitudinal direction, protrude individually from the outer circumferential surface
Implementation Method 3
heat-dissipating airflows (F) would be induced along the corresponding external annular channels
Data Source
AI summary
A heat-dissipation frame assembly includes a motor frame, an air-guide shield and an airflow-driving device. The motor frame includes a main frame and annular heat-dissipation fins. Each of the annular heat-dissipation fins has an outer edge, and an average radial distance is defined between the outer edge and the central axis. The average radial distances of the annular heat-dissipation fins are decreased gradually in the longitudinal direction from the first end portion to the second end portion, and an external annular channel is formed between any neighboring two annular heat-dissipation fins. The airflow-driving device, disposed at the second end portion of the main frame, is used for generating at least one heat-dissipating airflow. The air-guide shield, connected with the motor frame, surrounds and covers the plurality of annular heat-dissipation fins, such that the at least one heat-dissipating airflow is guided into the plurality of external annular channels.