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What is the difference between an FFU and a clean laminar flow hood?
What is the difference between an FFU and a clean laminar flow hood?FFU air filter unit or FFU purification unit and clean laminar flow hood are air purification units that can provide a locally clean environment, and can be flexibly installed above the process that requires a high degree of cleanliness so that the local environmental cleanliness can reach Class 100, so what is the difference between the two, and how to distinguish between them?1. The difference between the use of the scene FFU purification unit as a clean room air supply device, as part of the clean room or clean shed to play a role, whether it is a single or modular connection to use, it is suspended from the top of the clean room, through the number of how many and layout to meet the requirements of the clean room of different cleanliness levels. Clean laminar flow hood as a kind of local purification equipment, the environmental requirements are not high, can be independent of the clean room to operate alone, can be made to do the hanging type can also be made to do the ground support type, but also can be upgraded to do the movable laminar flow clean car. 2. Difference in product structure Clean laminar flow hood than FFU purification unit structure is complex, to DXN Zhiyuan clean laminar flow hood, for example, clean laminar flow hood body material from stainless steel plate bending and welding molding, smooth and clean, do not accumulate dust and easy to clean; Filter for the slot-type high-efficiency filters, more sealing, in line with the requirements of the new cGMP; Configuration of the PAO dust port and DOP detection port to ensure the integrity of the filter element; but also configured with the U.S. Dwyer differential pressure table Timely reminder to replace the high-efficiency filter; configuration of the new average flow membrane technology, wind speed uniformity within ± 10%; individually configured LCD touch screen, wind speed, sterilization, lighting man-machine interface at a glance. In addition, the fan of a clean laminar flow hood can be installed internally or externally. FFU purification unit structure is relatively simple, the main body shell is mostly zinc-aluminium alloy, built-in fan, and primary and high-efficiency filters. More than one FFU purification unit is used in parallel, testing will generally be configured group control system, and the airflow is not as uniform as the clean laminar flow hood. |
