Fan Module Dust Exhaust via Nested Heat Sink Channel
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Solution Overview
Problem
Conventional fan modules suffer from airflow loss and reduced flexibility in electronic device design due to the need for a side wall opening for dust collection, which affects performance and industrial design.
Innovation Solution
A fan module design featuring a fan housing with an open side and an enclosing side, including a first airflow guiding channel, and a heat dissipating member with a second airflow guiding channel that serves as both a dust collection and exhaust path, eliminating the need for a protruding dust collecting chamber and additional holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a side wall opening is formed on the fan housing for dust collection, then dust can be exhausted from the fan module, but airflow is lost during normal fan operation
Solution Approach 1:
The dust collection and exhaust functions are segmented from the main fan housing structure. A separate dust collecting chamber is introduced that can be independently controlled, allowing dust exhaust without opening the main fan housing airflow path.
Solution Approach 2:
A dust collecting chamber acts as an intermediary structure between the fan housing and the external environment. This chamber collects dust particles and allows controlled exhaust through a separate path, preventing direct opening of the fan housing and thus avoiding airflow loss during normal operation.
2Object-affected harmful factors
If a protruding dust collecting chamber is formed on the fan housing, then dust can be collected and exhausted, but the electronic device has less flexibility for arranging components
Solution Approach 1:
The dust collecting chamber is nested within the existing fan module structure rather than protruding outward. This nested design allows the dust collection function to be integrated into the internal space of the fan module, avoiding external protrusions that would interfere with component arrangement and reducing the need for additional housing openings.
3Object-affected harmful factors
If an additional broken hole is formed on the external housing for dust exhaust, then dust can be exhausted from the electronic device, but industrial design considerations and appearance are compromised
Solution Approach 1:
The dust exhaust function is merged with the existing fan module structure. The dust collecting chamber is integrated into the fan housing, and dust exhaust is achieved through the fan's existing airflow path rather than requiring separate holes in the external housing. This merging eliminates additional openings that would compromise the device appearance.
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
This design optimizes airflow and reduces wind resistance, ensuring effective dust exhaustion without compromising the fan's performance or the electronic device's appearance, while providing greater flexibility in internal component arrangement.
Implementation Method 1
the air generated by the fan passes through the first airflow guiding channel and the second airflow guiding channel and flows out for dust exhausting
Implementation Method 2
the heat dissipating member includes a heat sink body and a plurality of heat dissipating fins
Implementation Method 3
The heat dissipating member further includes a heat pipe disposed on the heat sink body
Data Source
AI summary
A fan module and an electronic device are provided. The fan module includes a fan housing, a fan and a heat dissipating member. The fan housing has an open side and an enclosing side which surrounds the open side, wherein the open side is provided with a first airflow guiding channel. The fan is disposed within the fan housing, the heat dissipating member is disposed at the open side, the heat dissipating member has a second airflow guiding channel which is communicated with the first airflow guiding channel, and the air generated by the fan passes through the first airflow guiding channel and the second airflow guiding channel and flows out for dust exhausting. The electronic device includes a chassis and the fan module, and the fan module is mounted in the chassis.