FFU fan filter unit consists of several major components of the box, centrifugal fans, high efficiency filter, operating switches, etc.. Using high-quality cold-rolled steel and painted steel cabinet, with a compact, easy to install, low noise; of FFU fan filter unit has adjustable air volume fan system, by adjusting the fan working condition, can clean the work area average wind speed remains within the rated range, and effectively extend the life of the high efficiency filter. 

 FFU work principle 
 Ambient air after the pre-filter by a centrifugal fan pressure into the plenum chamber, and then after a HEPA filtered from the blowing of the wind surface, clean air, clean air flow to the need to purify the area of ??uniform cross-section wind speed flows through the region the dust away, to form the high cleanliness of the working environment, increase the angle diffuser to expand the range of purification, but also can be set in the outlet diffuser. 

 FFU fan filter unit features: ` 
 1, compact structure, easy installation, low noise, light weight, nice, etc. advantages. 
 2, using a dedicated fan, long life, maintenance-free. 
 3, using a special flow channel and the current-system design, low noise, wind speed and uniform characteristics. 
 4, light weight, modular installation, installation, replacement filters and maintenance more convenient. 
 5, and flexibility. FFU own power, it is not the region too many restrictions, according to production needs, and sub-control computer group control and remote control function. 
 6, shorten the construction period. Use of FFU to reduce the production and installation of duct share a lot of time. 
 7, FFU to reduce operating costs. FFU in the late operation and maintenance simple and convenient; sub-control management, energy saving, low-carbon requirements truly meet the currently advocated.