Fan Frame Vibration-Proof Members Absorb Noise
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Solution Overview
Problem
Existing heat dissipating devices in electronic products face instability and noise issues due to vibrations generated by high-speed fans, which are conducted to the heat dissipating fins or casings, leading to reduced stability and unwanted noise.
Innovation Solution
A fan frame with vibration-proof members, featuring positioning ribs and grooves, and fixing holes, is designed to absorb vibrations instead of transmitting them to the heat dissipating fins or casings, using materials like rubber or plastic for effective vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fan is fixed directly to the heat dissipating fin or casing using screws, then the fan can be securely mounted, but the vibration generated during high-speed rotation is transmitted to the heat dissipating fin or casing, causing resonance and instability
Solution Approach 1:
The patent introduces a fan frame as an intermediary component between the fan and the heat dissipating fin/casing. This fan frame absorbs and isolates the vibration generated by the fan during rotation, preventing it from being transmitted to the heat dissipating fin or casing, thereby eliminating resonance while maintaining secure mounting
Solution Approach 2:
The fan frame is constructed using composite materials that combine rigid structural support with vibration-absorbing properties. This allows the frame to maintain mechanical strength for secure mounting while simultaneously damping vibrations before they can be transmitted to other components
2Device complexity
If the fan is fixed directly to the heat dissipating fin or casing, then the structure is simple, but the vibration causes screws to loosen over time, reducing stability
Solution Approach 1:
The fan frame serves as a mediator that decouples the vibration source from the mounting screws. By positioning the screws on the fan frame rather than directly on the heat dissipating fin or casing, the vibration-induced loosening is prevented while maintaining a relatively simple mounting structure
Solution Approach 2:
The fan frame provides beforehand cushioning by incorporating vibration-absorbing features into the mounting structure. This preemptive measure protects the screws from vibration-induced loosening before it occurs, ensuring long-term stability without complicating the overall structure
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 enhances the stability of the fan and reduces noise by absorbing vibrations, thereby improving the overall performance of the heat dissipating system.
Implementation Method 1
vibration generated by the fan during rotation in high speed will be absorbed by the vibration-proof members instead of being conducted to the heat dissipating fin or the casing
Data Source
AI summary
A fan includes a fan frame and a fan wheel. The fan frame includes a frame body and at least two vibration-proof members. The frame body has at least two positioning ribs, wherein the at least two positioning ribs protrude from a side wall of the frame body and are distributed symmetrically. Each of the vibration-proof members has a positioning groove. The positioning rib of the frame body is capable of being embedded in the positioning groove of the vibration-proof member so as to position the vibration-proof member on the side wall of the frame body. The fan wheel is rotatably disposed in the fan frame.