Differences between FFU and laminar flow hood

Both FFU (fan filter unit) and laminar flow hood play a vital role in cleanrooms and related applications. They can both provide efficient air purification, but there are certain differences in their structure, installation methods, and usage scenarios. This article will analyze the differences between the two devices and their applicable scenarios in detail to help you make a more informed choice.

FFU: FFU is a fan filter unit that usually contains a built-in fan and filter. It has a compact design and simple structure, which is easy to install and maintain. FFU can be used alone or in combination with a strip-shaped clean area.

Laminar flow hood: Laminar flow hood is a purification device that can form a vertical unidirectional flow, and its structure includes bracket installation. Laminar flow hood can be regarded as an evolved version of FFU, which has improved installation flexibility and filter replacement convenience. A Laminar flow hood adds a flow plate to improve the uniformity of the air outlet, protect the filter, and have a more beautiful appearance.

2. Return air method

FFU: FFU usually returns air from the ceiling ceiling.

Laminar flow hood: Laminar flow hood returns air from the room.

3. Application scope

FFU: FFU has a wide range of applications and can be used in various clean rooms to provide a local clean environment and meet high cleanliness requirements.

Laminar flow hood: The application scope of the laminar flow hood is relatively narrow, and it is mainly suitable for purification and filtration in clean areas of Class 100-300,000.

III. The use characteristics of FFU and laminar flow hood in different application scenarios

1. Clean room construction

FFU: FFU is suitable for clean room construction or renovation projects, especially for occasions that require efficient air purification. Its modular design is easy to adjust and expand according to actual needs.

Laminar flow hood: Laminar flow hood is more suitable for local purification of existing clean rooms, such as laboratories, operating rooms, and other places with high cleanliness requirements.

2. Filter replacement

FFU: FFU filter replacement is relatively convenient, and users can choose filters of different filtration grades according to their actual needs.

Laminar flow hood: The filter replacement of the laminar flow hood is also convenient, and due to its structural characteristics, the filter can be quickly replaced.

3. Installation method

FFU: FFU has a flexible installation method and can be suspended or supported on the ground.

Laminar flow hood: Laminar flow hood is mainly installed by bracket, and the installation method is relatively fixed.

IV. Conclusion

As mentioned above, there are certain differences between FFU and laminar flow hoods in terms of structure, air return method, and application scope. When choosing which equipment to use, it is necessary to make comprehensive considerations based on actual needs and scenarios. For clean room construction and renovation projects, FFU has more advantages; and when the local purification level needs to be improved in an existing clean room, a laminar flow hood is a better choice. I hope this article can provide a useful reference for your equipment selection.