Special air purification equipment fan filter unit (FFU) structure, role and applications
Fan filter Unit (FFU) as a special high-efficiency air supply outlet, which is widely used in industrial clean plants, especially the electronic industry clean plant of the thousand, hundred clean area.
And laminar flow hood structure is basically the same, fan filtration unit (FFU) is also composed of fans and high-efficiency filters and other components, but the fan filtration unit (FFU) external dimensions compared to the laminar flow hood is smaller, the internal set of high-efficiency filters are basically high efficiency filters are non-spacer.
Its main components are: centrifugal backward tilting direct drive fan set, high efficiency filter without partition, shell, damping layer. Among them, the shell is mostly made of stainless steel plate, galvanized steel plate or cold-rolled steel plate with plastic spraying. At present, the world's mainstream fan filter unit (FFU) has the following two models: 1200x1200 and 1200x600. click to view the corresponding products and price quotes.face air velocity is mostly between 0.20-0.50, which just encompasses the construction of the factory specification on the unidirectional flow of the clean room face air velocity of the mandatory requirements.
Fan filter unit (FFU) is characterized by compact structure, easy to install, but high speed operation (such as surface air velocity of 0.45m / s) noise. Therefore, FFU is not suitable for clean plants with high noise requirements, such as operating room projects.
As for the role and application of fan filtration unit (FFU), it has been mentioned above, based on the special structural form of fan filtration unit (FFU) (with a separate fan), so it is widely used in high purification grade clean room.
The main reason is that the fan filtration unit (FFU) can be very stable to provide the face of the wind speed between 0.20-0.50 unidirectional flow airflow, applied to the 100-level clean room, just can perfectly create a unidirectional flow airflow organization environment!
