Why does precision electronic production need to pay attention to FFU air supply uniformity?
Precision electronics production more sensitive to airflow
Precision electronic production includes SMT mounting, PCB assembly, optical inspection, precision connector assembly, display panel processing and other processes. In these processes, products may be directly exposed to the air and are sensitive to particles and air flow disturbances.
FFU air supply uniformity refers to the uniformity of wind speed distribution in the wind surface or protection area. If the air supply is uneven, the wind speed will be higher in some locations and lower in some locations. Locations with low wind speeds may form areas of weak airflow where particles can easily accumulate. Locations with high wind speeds may cause airflow disturbances, affecting precise operations or product positioning.
Therefore, precision electronics production needs to pay attention to the uniformity of FFU air supply, rather than just looking at the average wind speed on the wind surface. Aili Industrial has complete production capabilities in FFU matching in the electronics industry and can provide air supply solutions based on workstation conditions. For the basic structure of the FFU machine, you can refer toAili Industrial FFU fan filter unit。
What problems will uneven air supply cause?
Uneven air supply may cause several types of problems. Local areas of weak airflow may cause particle accumulation and affect product surface cleanliness. Excessive local wind speed may cause product displacement, vibration or operational interference. Airflow gaps may appear at the splicing boundaries of multiple FFUs, affecting continuous protection. Blockage by equipment or work equipment may deflect airflow, resulting in insufficient protection of certain parts of the workstation.
For precision electronics production, these issues may affect product yield or inspection accuracy. Therefore, air supply uniformity should be confirmed during the selection and commissioning stages.
What factors affect FFU air supply uniformity?
Factors that affect the uniformity of air supply include: filter folding structure and installation status; fan and box air duct design; air outlet surface protection net or diversion structure; splicing method of multiple FFUs; occlusion of workstation equipment and tooling; return air path and room airflow.
If the filter is not installed in place or is unevenly sealed, the air velocity on the outlet surface may be unevenly distributed. If the fan and cabinet are not well matched, the local wind speed may be too high or too low. If there are gaps in the splicing of multiple FFUs, weak areas may appear at the boundaries.
How to set measuring points
To verify the uniformity of air supply, measuring points need to be set. The measuring points should not only be arranged in the center of the FFU, but also cover the edges of the air outlet surface, the splicing boundaries of multiple FFUs, key operating positions of the workstation, and product exposure positions.
The height of the measuring point should be consistent with the actual protection position, rather than just measuring the wind surface. For precision electronic workstations, wind speed and airflow direction can be measured on the product surface or at the operating position.
How to adjust the layout
If you find that the air supply is uneven, you can start by adjusting the layout. Adjust the FFU position or spacing to make the air supply surface more continuous. Add small FFUs near weak areas or adjust the air supply direction. Adjust the position of workstation equipment or work equipment to reduce obstruction. Optimize the return air path and improve local airflow.
For equipment end workstations, please refer toEquipment end fan filter unit andCustomize the EFU equipment-end fan filter unit to understand the equipment supporting air supply scheme. For workstations with limited space, you can refer toUltra-thin FFU and70mm ultra-thin EFU。
How to verify uniformity
Verify air supply uniformity, which can be measured under actual operating conditions. The measurement content includes: wind speed distribution on the air outlet surface; wind speed at key positions of the workstation; wind speed at the splicing boundary of multiple FFUs; airflow direction; changes during personnel operation and equipment operation.
The measurement results can be used to plot the wind speed distribution and observe the uniformity. If weak areas are found, the causes can be analyzed and adjustments made.
Issues that should be confirmed in advance during project communication
In the design stage of the FFU solution for precision electronics production, it is recommended to confirm the following with the FFU manufacturer and process party: work station layout and product exposure position; equipment shielding and operating actions; target wind speed and uniformity requirements; measuring point layout and measurement method; FFU quantity and layout; return air path; verification method and judgment standard; adjustment plan.
If you are planning a FFU solution for precision electronics production, you can visitAili Industrial FFU fan filter unit to learn about the complete machine configuration, you can also contact Aili Industrial to obtain support for electronic workstation air supply solutions.
in conclusion
Precision electronic production is sensitive to air flow disturbances, and uneven FFU air supply may cause local particle accumulation or product contamination. The uniformity of air supply should be checked based on workstation layout, equipment shielding and operating actions. Measuring point setting, layout adjustment and actual operation verification are the main steps to confirm uniformity.
Aili Industrial has complete production capabilities in FFU matching in the electronics industry and can provide air supply solutions based on workstation conditions. If you need to know more about precision electronic production FFU configuration, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.
