Centrifugal Fan Frame Enlarged Outlet for Notebook Heat Dissipation
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Solution Overview
Problem
Conventional centrifugal fan structures in notebooks suffer from noise issues and poor heat dissipation due to the narrow internal space, heat accumulation, and interference between the fan and heat dissipation components, which restrict airflow and increase surface temperatures, causing user discomfort.
Innovation Solution
The centrifugal fan frame body structure is designed with an enlarged wind outlet height to prevent airflow obstruction by heat dissipation components, enhancing airflow smoothness and reducing noise, and includes a reinforcing rib section to increase structural strength and further enhance airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the heat pipe is spaced 0.8-0.9 mm from the notebook case C/D piece, then the heat dissipation structure is compact, but the surface temperature becomes too high causing user discomfort
Solution Approach 1:
The patent extends the heat dissipation function from a single-plane heat pipe to a three-dimensional structure by adding radiating fins that protrude from the heat pipe surface. This multi-dimensional heat dissipation structure increases the heat dissipation area without significantly increasing the footprint space, allowing better heat dissipation while maintaining compact notebook design.
2Length of stationary object
If the upper cover of the fan case has height equal to the heat pipe height, then the fan case structure is compact, but the heat pipe cannot effectively lower the surface temperature
Solution Approach 1:
The patent creates vertical space above the heat pipe by designing the fan case upper cover height to be greater than the heat pipe height. This additional vertical dimension accommodates protruding radiating fins that extend above the heat pipe, enabling enhanced heat dissipation capability without compromising the compactness of the overall fan case structure.
3Length of stationary object
If the airflow border height equals the heat pipe height, then the fan case is compact, but the wind outlet creates resistance and generates noise
Solution Approach 1:
The patent designs the fan case with increased height at the wind outlet region, creating a taller airflow channel that extends above the heat pipe and radiating fins. This provides sufficient vertical space for smooth airflow passage, preventing turbulence and noise generation while maintaining an overall compact fan case design through optimized spatial distribution.
4Device complexity
If heat dissipation components are directly mated with the fan wind outlet, then the structure is compact, but the fan flow field efficiency is affected and noise increases
Solution Approach 1:
The patent introduces an intermediate space between the heat dissipation components (heat pipe and radiating fins) and the fan wind outlet. This intermediate region, created by the increased fan case height, allows the airflow to smoothly pass around the heat dissipation structures without direct obstruction, maintaining fan flow field efficiency and reducing noise while keeping the overall structure compact.
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 improves airflow efficiency, reduces noise, and enhances heat dissipation performance by ensuring the wind outlet is not blocked by heat dissipation components, leading to improved user comfort and reduced heat accumulation in notebooks.
Implementation Method 1
centrifugal fan frame body structure
Implementation Method 2
the manufacturer arranges a heat pipe to conduct the heat to the wind outlet
Implementation Method 3
the heat is radiated to the case C/D piece
Implementation Method 4
the fan can carry the heat conducted by the heat pipe away from the internal space
Data Source
AI summary
A centrifugal fan frame body structure includes a lower case body and a cover body. The lower case body has a bottom section and an outer wall section. The outer wall section is formed with a wind outlet. The cover body and the lower case body are correspondingly mated with each other to form a space. In the space, the lower case body and the cover body define therebetween a first height. The lower case body and the cover body define therebetween a second height at the wind outlet. The second height is larger than the first height. The height of the wind outlet is enlarged, whereby the wind outlet will not be blocked by the cooperative heat dissipation component (module) so that the flow field efficiency is enhanced and the noise is lowered.