Dual-Chamber Electronic Cooling With Induced Airflow Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional passive heat dissipation methods for secondary heat sources in electronic devices are inefficient compared to active methods, leading to suboptimal performance and increased costs when additional fans are used.
Innovation Solution
An electronic device design with separate chambers and strategically positioned air outlets to induce airflow between chambers, allowing a fan in one chamber to actively dissipate heat from both primary and secondary heat sources without increasing the number of fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If passive heat dissipation methods are used for secondary heat sources, then the number of fans can be kept low, but the heat dissipation effect is inferior
Solution Approach 1:
The housing is divided into a first chamber and a second chamber that are independent of each other. The first chamber houses the primary heat source and fan, while the second chamber houses the secondary heat source. This segmentation allows independent heat dissipation pathways for each heat source, enabling active cooling of the primary heat source while the secondary heat source benefits from induced airflow from the first chamber.
Solution Approach 2:
The first airflow acts as an intermediary that indirectly cools the secondary heat source. The fan in the first chamber generates a first airflow that passes through the first heat source and exits through the first air outlet. This first airflow then serves as the driving force for the second airflow that cools the second heat source, thus the first airflow mediates the cooling of both heat sources without requiring a dedicated fan for the second chamber.
2Loss of energy
If additional fans are installed to actively dissipate heat from secondary heat sources, then heat dissipation efficiency improves, but device complexity and cost increase
Solution Approach 1:
The fan in the first chamber serves a dual function: it directly cools the primary heat source through the first airflow, and indirectly cools the secondary heat source by inducing the second airflow in the second chamber. This multi-functionality allows a single fan to actively dissipate heat from both heat sources, eliminating the need for additional fans while maintaining high heat dissipation efficiency.
Solution Approach 2:
The system uses the heat dissipation airflow from the primary heat source to automatically drive the heat dissipation of the secondary heat source. The first airflow exiting through the first air outlet automatically induces the second airflow that passes through the second heat source, creating a self-sustaining heat dissipation system that does not require additional active components for the secondary heat source.
3Device complexity
If copper foil or graphite sheets are used for passive heat conduction from secondary heat sources, then no additional fans are needed, but heat dissipation performance remains poor
Solution Approach 1:
The patent replaces the thermal conduction mechanism (copper foil or graphite sheets) with a fluid convection mechanism (induced airflow). Instead of relying on thermal conduction through solid materials to transfer heat from the secondary heat source, the system uses the second airflow to directly convect heat away from the second heat source, significantly improving heat dissipation performance while maintaining the same level of device complexity.
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
Enhances heat dissipation efficiency from both heat sources while maintaining a compact design and reducing costs by leveraging induced airflow between chambers.
Implementation Method 1
The fan is disposed in the first chamber for generating a first airflow that enters from the first air inlet, passes through the first heat source, and exits through the first air outlet
Implementation Method 2
When the first airflow exits through the first air outlet, a second airflow is induced that enters from the second air inlet, passes through a portion of the second heat source exposed to the second chamber, and exits through the second air outlet
Implementation Method 3
the first airflow that enters from the first air inlet, passes through the first heat source... passes through a portion of the second heat source exposed to the second chamber
Data Source
AI summary
An electronic device comprises a housing, a first heat source, a second heat source and a fan. The housing has a first chamber, a second chamber, a first air inlet, a second air inlet, a first air outlet, and a second air outlet. The first air inlet and the first air outlet communicate with the first chamber. The second air inlet and the second air outlet communicate with the second chamber. The first air outlet is adjacent to the second air outlet. The second heat source is disposed in the first chamber and is partially exposed to the second chamber. The fan is disposed in the first chamber for generating a first airflow that enters from the first air inlet, passes through the first heat source, and exits through the first air outlet. When the first airflow exits through the first air outlet, a second airflow is induced that enters from the second air inlet, passes through the portion of the second heat source exposed to the second chamber, and exits through the second air outlet.