Composite Fan Frame Structure for Vibration Damping
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Solution Overview
Problem
Conventional fan frame structures made of single materials amplify vibration, leading to noise and reduced device lifetime due to focused resonance, necessitating a solution to disperse resonance and absorb vibration effectively.
Innovation Solution
A fan frame structure comprising a metal or alloy frame body with distinct plastic or rubber first and second frames, and integrated supports, which are designed with different engaging portions to effectively disperse resonance and absorb vibration by blocking direct energy transmission from the vibration source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-material frame structure is used, then the manufacturing is simple and cost is low, but the resonance zone is focused and vibration response is amplified
Solution Approach 1:
The frame structure employs composite materials with different resonance frequencies (e.g., metal frame body combined with plastic or rubber components) to disperse the resonance zone. This prevents vibration amplification by ensuring that not all parts resonate at the same frequency during fan operation, thereby reducing overall vibration response while maintaining structural integrity.
2Object-affected harmful factors
If different materials are used in frame structure, then the resonance zone is dispersed and vibration absorption is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple materials (metal frame body with plastic/rubber components) into a unified frame structure where each material serves a specific vibration-absorbing function. The different materials are integrated through engaging portions that allow them to work together as a cohesive system, dispersing resonance zones while managing complexity through functional integration.
3Temperature
If high-speed fan is used for better heat dissipation, then the heat dissipation efficiency is improved, but the vibration frequency increases and noise is generated
Solution Approach 1:
The patent converts the harmful high-frequency vibrations generated by high-speed fan operation into beneficial vibration absorption through the frame structure. The metal frame body combined with plastic/rubber components acts as a vibration damping system that absorbs and dissipates the high-frequency vibrations, transforming the harmful effect into a controlled energy dissipation mechanism that reduces noise and protects neighboring devices.
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 use of different materials in the fan frame structure disperses resonance zones, significantly reducing vibration response and enhancing vibration absorption, thereby optimizing fan performance and extending device lifespan.
Implementation Method 1
The material of the frame body is different from that of the first and second frames... disperses the resonance zone of the frame structure and decreases the vibration response... achieving the effective vibration absorption of the fan
Data Source
AI summary
A fan includes an impeller, a drive device, and a frame structure. The driving device drives the impeller to rotate, and the frame structure accommodates the driving device. The frame structure includes a frame body, a first frame, a second frame, a base and a plurality of supports. The frame body has first engaging portions and second engaging portions, which are disposed annularly at the upper end and the lower end of the frame body, respectively. The first frame is mounted on the frame body and disposed corresponding to the first engaging portions. The second frame is mounted on the frame body and disposed corresponding to the second engaging portions. The base is disposed within the frame body and located adjacent to the second frame. The supports are disposed around the base. The material of the frame body is different from that of the first and second frames.