Laminar Flow Hood ensures the cleanliness of the work area through a series of careful designs and operations. The following is a detailed explanation of how Laminar Flow Hood ensures the cleanliness of the work area:
High-efficiency filtration system:
The core of Laminar Flow Hood lies in its high-efficiency filtration system, which usually adopts HEPA (High-efficiency Particulate Air) filters. HEPA filters can capture and remove particulates in the air, including dust, bacteria, viruses, etc. According to the standard, HEPA filters can remove at least 99.97% of particles of 0.3 microns or larger.
Unidirectional flow design:
Laminar Flow Hood draws air from the clean room through the top air inlet, and after filtering through the HEPA filter, it forms a vertical unidirectional flow. This design ensures that the air passes through the work area at a constant speed and direction, avoiding vortices and dead corners in the air flow, thereby ensuring high cleanliness in the work area.
Cleanliness standard:
The cleanliness of Laminar Flow Hood usually meets international standards, such as ISO 5 (Class 100) or Class 100 of the US Federal Standard 209E. This means that in the working area, the number of dust particles with a particle size of ≥0.5μm should be ≤3.5 particles/liter.
Exhaust gas treatment:
The exhaust gas of Laminar Flow Hood is discharged from the bottom and discharged to the outside or returned to the clean room area through the exhaust port. This helps to avoid the circulation and accumulation of pollutants in the working area.
Material selection:
The box of Laminar Flow Hood is usually made of high-quality 304 stainless steel or other corrosion-resistant materials, with a solid structure, smooth surface and easy cleaning. The selection of these materials also helps to reduce pollution sources and ensure long-term stable operation.
Installation and layout:
The installation and layout of Laminar Flow Hood are also key to ensuring its performance. They are usually installed above process points that require high cleanliness. They can be used alone or combined into a strip-shaped clean area. This flexibility allows Laminar Flow Hood to adapt to different working environments and needs.
In summary, Laminar Flow Hood ensures the cleanliness of the work area through a variety of means such as high-efficiency filtration system, one-way flow design, cleanliness standards, exhaust gas treatment, material selection and installation layout. These measures work together to provide an ideal solution for industries that require a high cleanliness environment.
