Air Mover Gantry Spring Mounting for Thermal Seal and Noise Reduction
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Solution Overview
Problem
Existing information handling systems face challenges in creating a secure and predictable thermal seal between air movers and the chassis, leading to increased vibrational noise, inconsistent airflow, and reduced airflow efficiency due to intermittent contact and uncontrolled assembly fits.
Innovation Solution
The implementation of an air mover gantry with locating features and spring features that mechanically couple the air mover assembly to the chassis, ensuring a fixed position and applying spring forces to bias the exhaust portion of the air mover towards the gantry face, creating a fluid seal and minimizing vibrational noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If air mover assembly is allowed to float in slot with clearance for easy installation, then ease of operation is improved, but reliability deteriorates due to intermittent contact and unpredictable mounting interface
Solution Approach 1:
A compliant mounting interface featuring a resilient member (spring element) is introduced as an intermediary between the air mover assembly and the chassis. This compliant interface acts as a mediator that maintains consistent contact pressure while accommodating manufacturing tolerances and thermal expansion, thereby ensuring reliable thermal coupling without requiring tight clearances that would complicate installation
Solution Approach 2:
The mounting interface transitions from a rigid fixed-position connection to a dynamic compliant connection that changes its contact parameters. The resilient member allows the interface to adapt its pressure and position characteristics based on operational conditions, maintaining optimal thermal contact while simplifying installation through controlled compliance
2Ease of operation
If air mover is minimally constrained to allow easy installation, then ease of operation is improved, but object-generated harmful factors worsen due to increased vibration energy input into chassis
Solution Approach 1:
The compliant mounting interface with resilient member serves as a vibration isolation intermediary. It decouples the rigid connection between air mover and chassis, allowing vibration energy to be absorbed and damped by the compliant material rather than being transmitted directly to the chassis and hard disk drives
Solution Approach 2:
The resilient mounting interface provides beforehand cushioning by pre-positioning compliant elements between the air mover and chassis. This cushioning layer is designed to absorb and dampen vibration energy before it can be transmitted to sensitive components, protecting against harmful vibrations while maintaining installation ease
3Ease of operation
If gaps are maintained between air mover and gantry for easy assembly, then ease of operation is improved, but productivity deteriorates due to limited maximum airflow potential
Solution Approach 1:
The mounting interface parameters are changed from fixed rigid gaps to dynamic compliant contact. The resilient member enables the air mover to be pushed forward until it contacts the gantry face, eliminating airflow-restricting gaps while maintaining ease of assembly through the compliant interface that guides proper positioning
Solution Approach 2:
The compliant mounting interface acts as an intermediary that facilitates full forward positioning of the air mover assembly. The resilient member allows the assembly to be easily inserted and then maintains consistent contact pressure, ensuring the air mover exhaust portion is properly biased against the gantry face for optimal airflow without creating restrictive gaps
4Ease of manufacture
If uncontrolled assembly fit is used to simplify manufacturing, then ease of manufacture is improved, but object-generated harmful factors worsen due to rattling parts creating acoustical tones
Solution Approach 1:
The compliant mounting interface with resilient member serves as an intermediary that eliminates rattling and acoustical tones. The compliant material ensures continuous contact between mounting surfaces, preventing loose parts from rattling against each other while still allowing easy assembly through the forgiving interface
Solution Approach 2:
The resilient mounting elements provide beforehand cushioning that prevents acoustical noise generation. By maintaining consistent contact pressure from the outset, the compliant interface prevents loose fits that would cause parts to rattle and generate unwanted acoustical tones during operation
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
This solution enhances the thermal seal, reduces vibrational noise, and improves airflow efficiency by maintaining a consistent interface between the air mover and the chassis, thereby extending component lifespan and enhancing customer experience.
Implementation Method 1
apply a second spring force to the air mover assembly in a direction of air flow through an air mover of the air mover assembly that biases an exhaust portion of the air mover toward a face of the air mover gantry
Data Source
AI summary
An air mover assembly may be configured such that during insertion of the assembly into an air mover gantry, one or more spring features integral to the gantry apply a first spring force opposite to a direction of insertion of the assembly relative to the gantry in order to maintain the assembly in an unseated position until the first spring force is overcome by an opposite force to fully seat assembly into the gantry and when the assembly is fully seated within the gantry, the one or more spring features integral to the gantry apply a second spring force to the assembly in a direction of air flow through an air mover of the assembly that biases an exhaust portion of the air mover toward a face of the gantry opposite of the one or more spring features.