Enclosure Cooling Apparatus with Passive Heat Dissipation
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Solution Overview
Problem
Current cooling systems for rack-mounted equipment housings face issues such as overheating due to blocked vent holes, high acoustic noise, and aesthetic concerns due to fan placement, which are not effectively addressed by existing technologies.
Innovation Solution
A cooling apparatus comprising an enclosure with strategically placed air intake and exhaust holes, a heat sink, and a fan that draws air through the enclosure to absorb heat, with a plenum piece dividing the interior to optimize airflow and reduce noise, and a passive heat conduction path for heat dissipation when the fan is not operating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan is placed right above the high wattage device to cool it effectively, then the cooling effectiveness is improved, but the acoustic noise increases significantly
Solution Approach 1:
The patent introduces an intermediary structure (housing with dedicated air passages) between the fan and the high wattage device. The fan is positioned in a housing that directs air through specific passages to reach the device, separating the noise source from the cooled component while maintaining effective heat dissipation through controlled airflow paths.
2Productivity
If the vent holes are placed right above the fan to facilitate airflow, then the cooling performance is improved, but the aesthetic appearance deteriorates when visible from outside
Solution Approach 1:
The patent segments the housing into functional zones: a dedicated air intake area with vent holes positioned for optimal airflow, and a separate display or aesthetic area. This segmentation allows the vent holes to be strategically placed for cooling performance while keeping the aesthetic surfaces clean and unobtrusive from external viewing angles.
3Temperature
If the fan is positioned to cool the high wattage device effectively, then the thermal management is improved, but the device becomes vulnerable to overheating when vent holes are blocked during installation
Solution Approach 1:
The housing serves as an intermediary structure that protects the airflow path. By integrating the fan and vent holes into a dedicated housing assembly with defined air passages, the system ensures that vents remain unblocked during installation and operation, maintaining reliable thermal management while isolating the airflow path from external obstructions.
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 effectively prevents overheating, reduces acoustic noise, and maintains aesthetic appeal by ensuring airflow and heat dissipation without the need for fan operation, enhancing cooling efficiency and reducing noise pollution.
Implementation Method 1
the heat sink being further configured to be in thermal contact with the enclosure so that when the fan does not operate, heat is drawn from the circuitry to the enclosure via the heat sink and is dissipated from the exterior of the enclosure
Implementation Method 2
a fan arranged such that when the fan operates, air is drawn from an exterior of the enclosure through the plurality of air intake holes, absorbs heat from the heat sink, and then is directed through the plurality of air exhaust holes into the exterior of the enclosure
Data Source
AI summary
An apparatus cools electronic circuitry. An enclosure surrounds the electronic circuitry and has plural surfaces. Air intake holes are disposed in at least one surface and face at least one first direction. Air exhaust holes are disposed in at least another surface and face at least one second direction different than the first direction. A heat sink is in thermal contact with the circuitry and conducts heat generated by the circuitry. When a fan operates, air is drawn from an exterior of the enclosure through the air intake holes, absorbs heat from the heat sink, and then is directed through the air exhaust holes into the exterior of the enclosure. The heat sink is further in thermal contact with the enclosure so that when the fan does not operate, heat is drawn from the circuitry to the enclosure via the heat sink and is dissipated from the exterior.