What is the difference between FFU and a high-efficiency air outlet in the cleanroom?

FFU is a purification device that integrates the functions of a fan, filter, and air outlet. It uses a fan to generate airflow, removes particulate matter in the air through a built-in high-efficiency filter, and then evenly delivers clean air into the workshop. FFU has a compact design and flexible installation method, suitable for the size and layout of various workshops. It is silent in operation, adjustable in speed, and has the characteristics of low energy consumption and easy maintenance.

In contrast, the high-efficiency air outlet is a component installed in the positive pressure air supply system of the workshop. It evenly delivers clean air into the workshop through a centralized air supply. The high-efficiency air outlet can be adjusted according to the size and needs of the workshop to ensure air circulation and cleanliness. High-efficiency filters are usually used to filter the air, and the air supply volume and wind speed are adjusted to meet the needs of the workshop. The air volume of the high-efficiency air outlet has different levels such as 500, 1000, 1500, 2000, etc. It is mainly used for terminal filtration of air purification systems such as clean rooms, dust-free workshops, clean workshops, laboratories, etc. in various industries.

High-efficiency air outlets and FFU fan filter units are some of the commonly used over-air supply and filtration equipment at the end of clean rooms. They have both similarities and some differences. The following is a specific comparison between them.

1 The box body is made of a variety of materials, and the common ones are cold-rolled steel plates (A3 plates), galvanized plates, and stainless steel plates (SUS201, SUS304, SUS316, etc.). The thickness of the box body is generally between 0.7 and 1.5 mm. The specific material and thickness can be customized according to customer needs, but the standard thickness of 1.0 mm is usually adopted;

2. Both devices are suitable for clean rooms of 1,000, 10,000, and 100,000 levels, and are key equipment for achieving the final filtration requirements of air in purification projects. It should be noted that fan filter units are suitable for clean rooms of 100 and 10 levels, while air outlets are usually not used in clean rooms of these levels. Whether it is a fan filter unit or a high-efficiency air outlet, it is widely used in purification air conditioning systems in the pharmaceutical, health, electronics, chemical, and other industries;

3. The construction of these two types of equipment is quite different. FFU is a purification and filtration equipment with a power device. It can be used alone or connected to an air duct. It consists of an air supply box, a flange, an air guide plate, a fan, and a high-efficiency filter. The air outlet is the terminal equipment of the centralized air supply method. It does not have a power device and needs to be configured with an air duct. The 4-piece set includes a static pressure box, a flange, a high-efficiency filter, and an outlet diffuser plate;

4. The difference between FFU and high-efficiency air outlets also lies in the installation method and air supply method. FFU is usually installed on the top or wall of the workshop and can be adjusted and moved as needed. It directly supplies air to the workshop and can provide a local purification solution for the purification workshop. The high-efficiency air outlet is installed in the air supply system, which requires more space and layout planning. It delivers clean air into the workshop through a centralized air supply, which is suitable for purification workshops with strict requirements on air quality.