What is Fan Filter Unit(FFU)

The fan filter unit is a high-efficiency filter device with its own fan, referred to as FFU (Fan Filter Unit). FFU has been widely used in the newly built chip factories in the past ten years, and it is mainly used for the roof air supply of large-area laminar flow cleanrooms.


The product is equipped with a fan, easy to install and maintain, and can be easily matched with any ceiling frame to meet the cleanliness level 100, 10 and 1 requirements. It is widely used in various industrial and biological clean rooms. SX-FUU fan filter air supply unit adopts single-phase or three-phase high-efficiency, long-life, maintenance-free motor, and provides optional variable speed controller and electronic rectifier electric motor, which can reduce energy loss and cooling load. Thereby reducing operating costs. A high total static pressure can be achieved under the rated air volume. A low-resistance filter without partitions and combined with the high total static pressure of the fan can provide an external static pressure of 50 to 100 PA under the rated air flow.

What is Fan Filter Unit(FFU)

FFU fan filter unit is self-circulating and fresh air system, which is suitable for cleanrooms with less heat and humidity load. By installing a dehumidification unit (direct evaporative cooler or concealed fan coil) on the ceiling interlayer, waste heat and humidity Absorb through self-circulation. Dry coils can also be installed in the clamps to prevent the condensate of the wet coils from causing pollution. In this system, because the ceiling interlayer is pumped into negative pressure by the fan, the technical difficulty is greatly reduced during installation. If the airtightness between the FFU and the support frame is insufficient, it is difficult for contaminants to penetrate into the workshop. At the same time, strict requirements should be imposed on the cable trays and process pipelines in the mezzanine, and the blocking speed of the high-efficiency filter in the FFU should be slow.


FFU is equipped with primary and high-efficiency two-stage filters. The fan sucks in the air from the top of the FFU and filters it through primary and high-efficiency filters. The filtered clean air is sent out at a uniform speed of 0.45M/S±20% on the entire air outlet surface. It is suitable for obtaining a clean environment in various environments. It provides high-quality clean air for clean rooms and micro-environments of different sizes and different cleanliness levels. In the new clean room, clean workshop-style renovation and renovation, the cleanliness level can be improved, noise and vibration can be reduced, the cost can also be greatly reduced, installation and maintenance are convenient, and it is an ideal component for a clean environment.


When installing the fan filter unit (FFU), be careful to keep it away from the heater. The temperature will be distorted if the temperature exceeds the tolerance range. No flammable materials should be placed in the fan filter unit to prevent fire. Do not use explosive or volatile chemicals nearby to prevent explosion accidents.

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