Heat Dissipation Subrack Baffle Airflow Redirection
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Solution Overview
Problem
Backplane communication equipment faces challenges in heat dissipation due to limited height constraints, leading to inefficiencies in airflow and increased wind resistance, which affects the heat dissipation effect and power consumption.
Innovation Solution
A heat dissipation subrack design with a cabinet body featuring an air inlet, air supplementing openings on both sides, and baffles that redirect airflow to improve airflow distribution and increase inlet air volume, reducing eddy currents and heat recirculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the height of air inlet and air outlet is increased to improve heat dissipation, then heat dissipation effect is improved, but the whole machine height increases which is not acceptable for large-scale routing switching equipment
Solution Approach 1:
The patent divides the single air inlet into multiple air inlets (first air inlet and second air inlet) positioned at different locations, and similarly divides the air outlet into multiple outlets. This segmentation allows the system to achieve greater total airflow area without increasing the height of individual components, thereby improving heat dissipation while maintaining compact dimensions.
Solution Approach 2:
Instead of increasing heat dissipation capacity solely in the vertical dimension (height), the patent utilizes horizontal distribution by placing multiple air inlets and outlets at different horizontal positions. This dimensional transition allows the system to achieve equivalent or superior heat dissipation performance without increasing overall machine height.
2Temperature
If traditional heat dissipation structures are used, then device complexity is low, but airflow distribution is poor with increased wind resistance affecting heat dissipation efficiency
Solution Approach 1:
The patent introduces guide plates as intermediary components between the air inlets and the heat generating components. These guide plates actively direct and optimize airflow distribution, reducing wind resistance and improving heat dissipation efficiency. The addition of this intermediary element justifies the increased structural complexity by delivering significant performance improvements.
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 airflow distribution, reduces wind resistance, and improves heat dissipation efficiency by up to 30-70%, addressing the limitations of existing designs.
Implementation Method 1
The cabinet body includes multiple baffles disposed in the air inlet region and spaced apart from one another. Each of the baffles includes two wind shielding surfaces, one of the two wind shielding surfaces faces one of the two air supplementing openings, and the other of the two wind shielding surfaces faces the other of the two air supplementing openings.
Implementation Method 2
heat dissipation subracks with air inlets and air outlets are widely used in backplane communication equipment to cool communication backplanes by airflow flowing through the heat dissipation subrack
Data Source
AI summary
Disclosed is a heat dissipation subrack, including a cabinet body defining an accommodating space. The cabinet body defines an air inlet, two air supplementing openings, and an air outlet. The accommodating space has an air inlet region, and a heat source region communicatively coupled to the air inlet region. An opening direction of the air inlet and an opening direction of each of the air supplementing openings intersect in the air inlet region. The cabinet body includes multiple baffles, each of the baffles includes two wind shielding surfaces, and airflow passages are defined between each two adjacent baffles and between one of inner walls of the cabinet body and an baffle adjacent to the one of the inner walls of the cabinet body.