Laptop Cooling Fan Inlet Layout for Higher Airflow, Lower Leakage
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Solution Overview
Problem
Existing fans in electronic devices, particularly laptops, suffer from limited airflow due to restricted opening ratios and impedance issues, leading to suboptimal heat dissipation performance and air leakage.
Innovation Solution
A fan design with a smaller air inlet diameter and strategically arranged auxiliary air inlet holes on the cover plate and base cover, which are configured to increase airflow volume while minimizing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the opening ratio is increased to allow more airflow, then the air volume increases, but air leakage from the air inlet increases
Solution Approach 1:
The patent divides the air inlet structure into multiple components: the main air inlet on the cover plate and multiple auxiliary air inlet holes distributed on the first arrangement zone and base cover. This segmentation allows the system to maintain a limited main air inlet opening ratio (avoiding air leakage) while still achieving high air volume through the combined effect of multiple smaller inlet paths.
2Productivity
If the air inlet diameter is increased to improve airflow, then more air can be introduced, but the structural integrity and impedance control are compromised
Solution Approach 1:
The patent applies local quality by creating different inlet structures in different zones: the main air inlet on the cover plate has a controlled diameter smaller than the impeller diameter to maintain proper impedance, while auxiliary air inlet holes are strategically placed in the first arrangement zone and base cover to supplement airflow without compromising the overall impedance control of the system.
3Quantity of substance
If multiple small holes are added to increase airflow, then air volume improves, but the system impedance increases
Solution Approach 1:
The patent extends the air inlet function to multiple spatial dimensions and surfaces: auxiliary air inlet holes are distributed not only on the first arrangement zone of the cover plate but also on the base cover surrounding the auxiliary air inlet. This multi-dimensional distribution of inlet holes increases air volume while maintaining balanced airflow paths that control system impedance.
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 enhances airflow volume and suppresses air leakage, improving heat dissipation efficiency and reducing noise, thereby enhancing the performance of electronic devices.
Implementation Method 1
the impeller is arranged in the accommodating chamber and connected with the hub, and the impeller follows a synchronous rotation with the hub to produce air flow
Data Source
AI summary
A fan includes a shell, a hub and an impeller. The base cover and the cover plate are arranged in parallel, and the side shell is arranged between the base cover and the cover plate. The cover plate is provided with an air inlet connected with the accommodating chamber and having a diameter smaller than a diameter of the impeller, and the side shell is provided with an air outlet connected with the accommodating chamber. The hub is pivotally installed in the accommodating chamber, the hub and the air inlet are arranged coaxially, and the impeller is arranged in the accommodating chamber and connected with the hub to produce air flow. The cover plate is defined as a first arrangement zone with a plurality of first auxiliary air inlet holes provided. The fan can increase air volume and suppress air leakage.