Perforated Intermediary for Series Fan Vibration Control
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Solution Overview
Problem
Conventional series fan structures experience severe vibration and noise due to co-vibration effects and have limited airflow volume due to direct serial connection of fan frames, which impedes efficient heat dissipation in electronic devices.
Innovation Solution
A series fan structure with an assembling member featuring multiple perforations is introduced between fan frames, reducing vibration and noise while enhancing airflow by allowing better air transfer between connected fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fan frames are directly serially connected using latch structures or screw locking structures, then the structure is simple and easy to manufacture, but severe co-vibration effect occurs and airflow volume is reduced
Solution Approach 1:
The patent introduces an assembling member as an intermediary component between the first and second fan frames. This assembling member includes a first connecting portion that connects to the first fan frame and a second connecting portion that connects to the second fan frame, replacing the direct connection method. The intermediary structure isolates the vibration between fan frames while maintaining simple assembly, thereby reducing co-vibration effects and noise without complicating the manufacturing process.
2Ease of manufacture
If fan frames are directly serially connected, then the structure is simple, but airflow volume is smaller due to air volume loss during transfer
Solution Approach 1:
The assembling member serves as an intermediary airflow channel between the first and second fan frames. It includes an air inlet that receives air from the first fan and an air outlet that discharges air to the second fan, creating a dedicated airflow path that prevents air volume loss during transfer. This intermediary structure maintains structural simplicity while significantly improving airflow volume efficiency.
3Volume of moving object
If multiple fans are serially connected along the central shaft, then the fan structure is compact, but vibration state cannot be changed and co-vibration effect is severe
Solution Approach 1:
The assembling member acts as a vibration-isolating intermediary between the serially connected fan frames. By positioning the assembling member between the first and second fan frames and providing connecting portions that attach to both frames, it creates a mechanical decoupling that reduces the transmission of vibration along the central shaft. This maintains the compact serial structure while improving vibration stability and reducing co-vibration effects.
Data Source
AI summary
A series fan structure includes a series fan assembly and an assembling member. The series fan assembly has a first fan and a second fan. The first and second fans are correspondingly serially connected with each other. The first fan has a first fan frame defining a first receiving space. The second fan has a second fan frame defining a second receiving space. The assembling member is disposed between the first and second fan frames. The assembling member is formed with multiple straight-through perforations in communication with the first and second receiving spaces. The series fan structure improves the vibration and noise problem of the conventional series fan structure and is able to increase airflow volume.