Aerodynamic Noise Absorber Module for Server Heat Dissipation
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Solution Overview
Problem
Server systems face a design challenge in balancing noise reduction and heat dissipation efficiency due to increased airflow turbulence and noise generated by high-speed fans, which compromises HDD read/write performance.
Innovation Solution
An aerodynamic noise absorber apparatus with flow guiding depressions and micro pores is positioned within the server device to absorb noise while maintaining airflow efficiency, using brackets and sound-absorbing materials to direct and trap sound waves without disrupting airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high-speed fans are used to increase heat dissipation efficiency, then heat removal capability is improved, but noise level increases
Solution Approach 1:
The patent extracts the noise-absorbing function from the fan assembly by adding a separate noise absorber component. The noise absorber is positioned adjacent to the fan blades to specifically target and absorb noise generated by fan rotation, while the fan continues to operate at high speed for effective heat dissipation. This separation allows independent optimization of both heat removal and noise control.
Solution Approach 2:
The noise absorber acts as an intermediary element between the fan and the surrounding environment. It intercepts noise waves generated by the high-speed fan before they propagate throughout the server system, effectively mediating the conflict between high-speed operation and noise reduction by providing a buffer zone that absorbs acoustic energy.
2Productivity
If airflow speed is increased to improve heat dissipation, then cooling efficiency is improved, but wake flow turbulence and noise increase
Solution Approach 1:
The patent converts the harmful wake flow turbulence and noise generated by high-speed airflow into a beneficial outcome by positioning the noise absorber to capture and absorb these turbulent flow characteristics. The wake flow that would normally cause noise and disturbance is instead channeled through the noise absorber material, where its energy is dissipated as heat within the absorber, transforming a harmful effect into an acceptable byproduct.
3Object-affected harmful factors
If noise absorber material is added to reduce fan noise, then noise level is reduced, but airflow resistance may increase
Solution Approach 1:
The noise absorber is strategically positioned only in specific locations where noise generation is most intense, such as adjacent to fan blades or in narrow gaps between components. This localized placement ensures that noise absorption occurs precisely where needed without adding resistance to the main airflow paths. The absorber material occupies only the space necessary for noise control, minimizing its impact on overall airflow efficiency.
Solution Approach 2:
The patent applies noise absorption partially rather than throughout the entire server system. By positioning the noise absorber only in critical noise generation zones and using materials with specific absorption characteristics, the solution provides sufficient noise reduction in key areas without the excessive airflow resistance that would result from comprehensive noise absorption throughout the entire system.
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 apparatus effectively reduces noise and maintains heat dissipation efficiency, enhancing HDD read/write performance by maximizing noise wave absorption without interfering with airflow or storage array natural frequencies.
Implementation Method 1
An aerodynamic noise absorber apparatus with flow guiding depressions and micro pores is positioned within the server device to absorb noise while maintaining airflow efficiency
Implementation Method 2
The bracket includes flow guiding depressions and micro pores
Data Source
Figure 1
Figure 2~3
Figure 4A
AI summary
An apparatus is provided that includes a first distal end and a second distal end. The apparatus also includes a first connecting member located at the first distal end and a second connecting member located at the second distal end. The apparatus also includes at least one bracket secured within the apparatus at the first and second connecting members. The bracket includes a flow guiding depressions and micro pores. The apparatus also includes a plate configured to abut the bracket within the apparatus. The first and second connecting members are configured to connect the apparatus within a server device.