External Labyrinth Air Duct Ventilation for Cabinet Noise Reduction
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Solution Overview
Problem
Current ventilation denoising systems for electronic equipment occupy valuable internal space and are inadequate for heat dissipation and noise reduction, especially in cabinets with high heat generation and limited volume.
Innovation Solution
A ventilation denoising device with a devious air duct formed by end-to-end communicating air passages, mounted externally to the equipment, which reduces noise by absorbing it through a labyrinthine structure and enhances both noise-reducing and ventilating capabilities without occupying internal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a dedicated noise-reducing duct is arranged inside the cabinet, then noise reduction capability is improved, but the available internal space for electronic components is reduced
Solution Approach 1:
The ventilation denoising device is extracted from the internal space of the cabinet and mounted externally. The air duct extends from the external mounting location into the cabinet through the ventilation opening, separating the noise-reducing function from the internal component space while maintaining effective noise reduction along the air flow path.
2Volume of stationary object
If the cabinet volume is reduced, then space efficiency is improved, but noise-reducing and ventilating capabilities are restricted
Solution Approach 1:
The air duct is configured to extend in multiple dimensions - externally along the cabinet surface and internally through the ventilation opening. This multi-dimensional routing allows the duct to provide adequate noise reduction path length and ventilation capability while adapting to compact cabinet volumes without requiring excessive internal space.
3Temperature
If fan running speed is increased to handle high heat generation, then heat dissipation capability is improved, but noise generation increases
Solution Approach 1:
The air duct is designed to convert the harmful noise generated by high-speed fan operation into a beneficial outcome by providing a long, winding path that absorbs and reduces the noise. The devious routing of the duct transforms the noise problem into an opportunity for effective noise reduction while maintaining the high heat dissipation capability required for high-heat electronic equipment.
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 external ventilation denoising device effectively reduces noise and enhances heat dissipation for electronic equipment, minimizing environmental noise impact and facilitating easier installation and maintenance, while meeting the requirements of various cabinet types.
Implementation Method 1
a devious air duct is obtained by providing a plurality of end-to-end communicated air passages in the noise-reducing module, whereby the ventilating module is provided with better noise-reducing capabilities, and the air duct of the ventilating module can be directly communicative with the air inlet or air outlet outside a cabinet, to thereby absorb the noise generated during running of the cabinet via the devious air duct
Data Source
AI summary
A ventilation denoising device that includes at least one ventilation module disposed with at least two air ducts inside, the air ducts are communicated end-to-end to form a circuitous air duct. The ventilation module is provided with a first ventilation opening communicated with one end of the air duct, and a second ventilation opening communicated with the other end of the air duct. Also disclosed is a ventilation denoising system equipped with the above mentioned ventilation denoising device. The ventilation denoising device can be installed outside equipments, such as a machine cabinet, as ventilation means thereof, and also reduce the noise generated during the equipment operation.