BFU fan unit

The BFU fan unit, also known as the fan filtration unit, will be introduced from the following dimensions: its principle, features, and applications.
Principle: The BFU fan unit adopts the modern large-area new-style clean room clean safety theory. It sucks in air from the top and then filters the air through the internal filter. The filtered clean air is evenly discharged from the bottom, providing high-quality air for the clean room.
Characteristics
Structural design: Lightweight modular structure, which can be adapted to the ceiling keel (T-Grid) system of various manufacturers, is convenient for installation, can be flexibly arranged according to requirements, can be assembled into a super-clean production line, and is very convenient for single or multiple units to be used in series.
Performance
Dual overload protection: Equipped with a high-performance motor featuring dual overload protection, it has the characteristic of high static pressure, ensuring stable air supply under different working conditions. At the same time, it has low noise and low energy consumption, effectively saving operating costs.
Uniform air outlet: Through scientific design, the air pressure diffusion is uniform, meeting the international standard IES-RP-CC002 requirements of +/-20 %, ensuring a good airflow shape in the clean room.
Low micro-vibration: The total vibration rate is less than 1mm/s, and the amplitude does not exceed 3μm, reducing dust particle shedding caused by vibration and the impact on precision equipment and processes.
Control mode: It features a flexible control mode, capable of achieving single-stage speed, three-stage speed regulation, five-stage speed regulation, or step-less speed regulation to adjust the air volume. It is also equipped with operation/abnormal indicator lights/abnormal dry contacts, facilitating real-time monitoring of the equipment's operating status by staff and timely detection and handling of faults.
Customizable: According to the specific project requirements, various special specifications and sizes can be customized. Additionally, pre-filters (G3-G4) and chemical molecular filters can be added to meet different cleanliness levels and air treatment requirements.
Application fields: Mainly used for purifying the air sent into clean areas, it is widely applied in the construction of large-area clean rooms ranging from Class 10 to Class 300,000, such as manufacturers of semiconductors, electronics, flat panel displays, and disk drives, as well as places with strict control requirements for air pollution in the optical, biological, medical and pharmaceutical industries.
Comparison with FFU
Similarities: Both BFU and FFU are self-powered, modular terminal air supply devices with filtration functions, both used in cleanrooms to provide clean air.
Differences: In some aspects, BFU is an upgraded alternative to FFU. Compared with FFU, BFU usually performs better in noise control, static pressure capacity, air uniformity, etc. Moreover, BFU has stronger functional scalability and can add more accessories and functional modules to meet more complex cleanroom requirements.
Installation and maintenance
Installation: The installation is relatively simple. It is mainly installed on the ceiling keel (T-Grid) or equipment machine in the clean area or working area. During installation, it is necessary to ensure that the installation position is flat and firm and that the connection parts are well-sealed to avoid air leakage.
Maintenance: Regularly check the operating status of the fan, including rotational speed, noise, vibration, etc., to ensure the normal operation of the fan. Replace the filter regularly to ensure the filtration effect and airflow. Check the control circuit, sensors, and other components to ensure that the control and monitoring functions of the equipment are normal.