Axial Fan Motor PCB Layout for Heat Dissipation and Mounting Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing axial fan motors face limitations in mounting area and heat dissipation due to the single-plate T-shaped control board design, restricting the installation of high-output components and limiting cooling efficiency.
Innovation Solution
The axial fan motor design incorporates a casing with integrated upper and lower casings, accommodating multiple circuit boards along the axial direction, allowing for increased mounting area and improved heat dissipation by exposing electronic components to the airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-plate T-shaped control board is used, then the structure is simple, but the mounting area is limited and cannot be increased further
Solution Approach 1:
The control board is divided into a first circuit board and a second circuit board that are disposed at different locations within the casing. This segmentation allows the mounting area to be distributed across multiple boards, thereby increasing the total available mounting area while maintaining structural simplicity through modular design.
Solution Approach 2:
The circuit boards are arranged in different spatial dimensions within the casing rather than extending in a single plane. By utilizing the three-dimensional space inside the casing, the design increases the effective mounting area without increasing the overall fan size, resolving the contradiction between simple structure and limited mounting area.
2Area of stationary object
If the mounting area of the control board is increased, then more electronic components can be installed, but the extension portion size is limited
Solution Approach 1:
Instead of extending a single control board, the functionality is segmented across two separate circuit boards positioned at different locations. This allows the mounting area to be increased without requiring a larger extension portion, as each board can be compact while collectively providing sufficient mounting space.
Solution Approach 2:
The two circuit boards are nested within the existing casing structure, utilizing the internal three-dimensional space efficiently. This nesting approach increases the effective mounting area without increasing the external dimensions or the size of the extension portion, as the boards are accommodated within the existing spatial envelope.
3Temperature
If all electronic components are installed in the extension portion, then heat dissipation is limited, but increasing the extension portion size is constrained
Solution Approach 1:
Electronic components are segmented and distributed across two separate circuit boards located at different positions within the casing. This segmentation enables heat to be dissipated from multiple locations simultaneously, improving overall heat dissipation performance without requiring a larger extension portion, as the thermal load is distributed rather than concentrated.
Solution Approach 2:
By arranging circuit boards in different spatial dimensions and locations within the casing, the design creates multiple heat dissipation pathways and surfaces. This three-dimensional distribution of components allows for more effective heat dissipation without increasing the extension portion size, as heat can escape from multiple spatial locations rather than a single extended area.
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 design doubles the mounting area for circuit boards, enhancing cooling efficiency and supporting higher output without increasing the fan's size, ensuring effective heat dissipation for all electronic components.
Implementation Method 1
an impeller accommodated in the casing and including a plurality of blades; a motor accommodated in the casing and configured to rotate the impeller
Implementation Method 2
the control board is lined substantially parallel to the rotation center axis of the fan so as to be disposed in an air flow flowing from an intake opening to an exhaust opening of a frame by a rotating blade, and thus the air flow hits all or part of the control board
Data Source
AI summary
To provide an axial fan motor increasing the mounting area of a circuit board and further improving heat dissipation as compared with the axial fan motor in the related art. A fan device as an axial fan motor includes: a casing having a hollow tubular shape and provided with an intake opening at one end in an axial direction and an exhaust opening at another end in the axial direction; an impeller including a plurality of blades and accommodated in the casing; a motor accommodated in the casing and configured to rotate the impeller; and a plurality of circuit boards arranged along the axial direction at a side close to exhaust opening in the casing.