When using FFU in new semiconductor projects, what parameters do you need to pay most attention to?
Direct answer: When selecting FFU for new semiconductor projects, you should focus on checking the cleanliness goals, air volume and wind speed under design conditions, available static pressure under target air volume, filter efficiency and resistance, wind speed uniformity, energy consumption and control methods, as well as installation and maintenance conditions. Various parameters need to be compared under the same working conditions and confirmed through prototype or on-site testing.
FFU is the end air supply equipment of the semiconductor clean room. It consists of a fan, motor, filter, box and control system working together. Same dimensionsThe FFU fan filter unit may produce different actual air supply effects due to different filters, operating gears or system resistance. Therefore, new projects cannot only compare nominal maximum air volumes or purchase prices, but should determine parameters based on process requirements.
1. Cleaning goal: first clarify which area the FFU wants to serve
Different process areas may have different requirements for particle control, airflow direction, and local cleanliness. Before selecting a model, the cleanliness level, dust generation by personnel and equipment, equipment heat dissipation, operating time, and air supply range should be clarified. The installation conditions and target airflow should also be checked separately for clean room ceiling FFU and equipment-side FFU to avoid using the same set of parameters to cover all scenarios.
2. Air volume, wind speed and static pressure: depend on the actual working point
The air volume determines the air supply capacity, and the wind speed and its uniformity affect the air flow distribution in the work area. Static pressure is related to whether the FFU can overcome the resistance of the filter and the system and maintain the required air volume under the target operating condition.
When comparing solutions with suppliers, you should be asked to provide with specified filters and under agreed operating gears and resistance conditions . air volume, static pressure and power consumption data The nominal maximum air volume usually cannot be directly used as the project design air volume. For batch projects, performance consistency between different FFUs should also be checked.
3. Filter: Check efficiency and resistance together
HEPA and ULPA filters should be selected based on process particle control requirements. In addition to filtration efficiency, it is also necessary to confirm the initial resistance, resistance changes during operation, box sealing and replacement methods. Changes in filter resistance will change the actual operating point of the FFU. Therefore, when changing the filtration level, the fan performance, energy consumption and maintenance requirements should be reviewed simultaneously.
4. Motor, energy consumption and control: select according to operating mode
Semiconductor projects often require long-term operation, and motor solutions should be evaluated based on speed range, power consumption, noise, power supply conditions, and maintenance needs. The key to adopting an AC, EC or DC solution lies in whether it can meet the operating conditions agreed upon by the project.
When the number of FFU is large, the control partition, speed regulation method, communication interface and status monitoring requirements should be determined during the design stage. Projects that require centralized management can be combined withThe FFU group control system plans the address, power supply and subsequent expansion to reduce debugging and adjustments after installation.
5. Installation and maintenance: Confirm that the equipment can be used and repaired
The FFU size needs to match the ceiling module or equipment installation interface, and check the available height, air inlet and return space, electrical wiring and maintenance direction. Filter replacement, motor inspection and control component maintenance all require operating space. For equipment-side or space-constrained projects, these conditions should be confirmed at the drawing stage before deciding whether to adopt a non-standard structure.
How does Aili Industry cooperate with semiconductor FFU project selection?
Aili Industrial can determine the configuration around the matching of fans, motors, filters, sheet metal structures and control systems, combined with the project's installation dimensions, target air volume, static pressure and control requirements. For batch FFU projects, it is recommended to confirm the prototype first, and then check the components, complete machine and on-site operation data according to the technical agreement. This makes it easier to detect deviations between dimensions, performance or maintenance conditions and project requirements.
During technical communication, it is recommended to provide process area and cleanliness requirements, floor plan and ceiling diagrams, target air volume or speed, filtration requirements, power supply and control methods, estimated quantities and zoning plans. The more specific the information, the easier it is for FFU specifications and quotations to correspond to actual working conditions.
FAQ: Can FFUs of the same size be directly interchanged? uncertain. It is also necessary to check the filter, static pressure at the target air volume, electrical interface, control method and installation and maintenance conditions.
FAQ: Is a higher filter level better? Should be subject to process requirements. When increasing the filtration level, the resistance and FFU actual air volume must be rechecked.
FAQ: Which data will be final? The working conditions and testing methods agreed upon in the project technical agreement shall prevail, and the actual operating results shall be confirmed through prototypes or on-site testing.
