Fan Frame Supporting Elements for Noise Reduction
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Solution Overview
Problem
High-performance electronic devices generate higher temperatures, leading to instability and requiring effective heat dissipation solutions, where fans with similar air pressure and volume characteristics differ mainly in noise levels, necessitating a solution to reduce noise while maintaining airflow efficiency.
Innovation Solution
A fan design featuring an impeller, motor, and fan frame with supporting elements not connected to the guiding portion, which reduces airflow resistance and noise by eliminating redundant structures, thereby maintaining or enhancing air pressure characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If supporting elements are connected to the guiding portion, then structural support is provided, but airflow resistance increases and noise increases
Solution Approach 1:
The patent extracts the harmful connection between supporting elements and guiding portion by making the supporting elements suspended (not connected) to the guiding portion. This removes the source of airflow resistance and noise while maintaining the structural support function through alternative means.
Solution Approach 2:
The supporting elements are designed as suspended thin structures that provide structural support without significantly obstructing airflow. The thin film-like nature of these elements allows air to pass through with minimal resistance while still providing the necessary support function.
2Object-affected harmful factors
If redundant structures are present at the guiding portion, then structural completeness is achieved, but noise increases and airflow characteristics are affected
Solution Approach 1:
The patent removes redundant structures from the guiding portion that would otherwise increase noise and affect airflow characteristics. By eliminating these unnecessary elements, the design achieves lower noise levels while maintaining functional completeness through the essential supporting elements.
Solution Approach 2:
Instead of connecting supporting elements to the guiding portion (conventional approach), the patent inverts the design by making them suspended and unconnected. This reverse approach eliminates the harmful effects of connection while maintaining the necessary support function.
3Reliability
If conventional fan design with connected supporting elements is used, then manufacturing simplicity is maintained, but air pressure characteristics deteriorate and noise increases
Solution Approach 1:
The patent segments the supporting elements as separate suspended components rather than integrated connected structures. This segmentation allows for better airflow characteristics and noise reduction while maintaining manufacturing feasibility through modular construction.
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 fan design effectively decreases noise and maintains or enhances airflow efficiency, ensuring reliable heat dissipation for electronic devices by minimizing airflow resistance and noise generation.
Implementation Method 1
an impeller, a motor and a fan frame. The motor is coupled to the impeller and drives the impeller to rotate
Data Source
AI summary
A fan includes an impeller, a motor and a fan frame. The motor is coupled to the impeller and drives the impeller to rotate. The impeller and the motor are accommodated in the fan frame. The fan frame has a main body, an inner circular portion formed with a passage, a guiding portion forming an outlet of the fan, a motor base and a plurality of supporting elements. The guiding portion is connected to the inner circular portion. The motor base is disposed in the center of the passage on the main body. The supporting elements are connected between the main body and the motor base, and each of the supporting elements has a suspended portion which is not connected to the guiding portion.