Electronic Cooling Airflow Layout to Prevent Fan Heat Deterioration
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Solution Overview
Problem
Conventional cooling devices for electronic machines suffer from reduced cooling efficiency and noise due to dust accumulation and heat-induced performance deterioration of fans, as well as air congestion, which can lead to malfunction.
Innovation Solution
A cooling device with a unique airflow structure featuring a blower fan positioned apart from the heat-radiating unit, an airflow channel with bypass passages to prevent congestion, and louvers to prevent water ingress, ensuring smooth airflow and continuous operation by concentrating airflow onto the heat-radiating unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the fan is positioned close to the heat-radiating unit for effective cooling, then cooling efficiency is improved, but the fan deteriorates due to heat and noise increases
Solution Approach 1:
The cooling device is divided into separate functional zones: the blower fan is positioned in the air inlet duct away from the heat-radiating unit, while the heat-radiating unit is located in the airflow channel. This segmentation allows the fan to draw cool air from the environment rather than being exposed to hot air from the circuit board, maintaining fan reliability while achieving effective cooling through the separated airflow paths.
2Productivity
If dust accumulates on the fan, then cooling efficiency decreases and noise increases, but cleaning the fan is difficult when it is integrated into the cooling structure
Solution Approach 1:
The blower fan is extracted from the integrated cooling assembly and positioned separately in the air inlet duct. This extraction makes the fan independently accessible for cleaning and maintenance without disassembling the entire cooling device, while the heat-radiating unit remains in place within the airflow channel, maintaining the effectiveness of the cooling system.
3Productivity
If air flows directly through the heat-radiating unit, then cooling is effective, but air congestion occurs reducing cooling performance
Solution Approach 1:
The airflow channel acts as an intermediary structure between the air inlet duct and the external environment. It guides the air drawn by the blower fan through a controlled path that passes over the heat-radiating unit, ensuring smooth airflow without congestion. The channel's geometry and positioning facilitate efficient heat dissipation while maintaining simple overall device structure.
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 enhances cooling efficiency, reduces noise, and prevents fan performance deterioration by maintaining the blower fan away from heat sources, ensuring continuous operation and easy maintenance by allowing easy removal of foreign matter from the heat-radiating unit.
Implementation Method 1
a heat-radiating unit disposed to the rear of a circuit board mounted with electronic components on a front surface thereof to absorb heat generated from the circuit board
Implementation Method 2
an airflow channel through which external air passes... to discharge air having passed through the airflow channel
Data Source
AI summary
A cooling device for an electronic machine includes an airflow channel through which external air passes, an air inlet duct through which external air is introduced and which is disposed at an upper front surface of the airflow channel and extends perpendicularly to the airflow channel, a blower fan disposed in the air inlet duct to draw in external air through the air inlet duct, an air outlet duct disposed at a lower portion of the airflow channel to discharge air from the airflow channel, and a heat-radiating unit disposed to the rear of a circuit board mounted with electronic components on a front surface thereof to absorb heat from the circuit board. The heat-radiating unit is located, apart from the blower fan, in the airflow channel. Through the improved cooling airflow structure, cooling efficiency is increased, noise is reduced and continuous cooling operation is achieved.