As an important part of purification equipment, the air shower room plays a key role in efficient dust removal due to its airflow organization principle. Through reasonable airflow organization, the air shower room can effectively remove dust particles that enter the surface of people or objects in a short time, providing reliable protection for the clean room.
The air shower room usually adopts the side-blowing or top-blowing airflow mode. In the side-blowing air shower room, the fan blows the filtered clean air out from the nozzles on both sides of the air shower room to form a high-speed airflow. The top-blowing air shower room blows the airflow downward from the nozzles at the top. The arrangement of these nozzles has been carefully designed to enable the airflow to evenly cover the entire air shower area, ensuring that all parts of the people or objects entering the air shower room can be blown by the airflow.
The airflow velocity blown out of the air shower room is usually high, generally around 20-30m/s. Such a high-speed airflow has a strong impact force and can blow away dust particles attached to the surface of people or objects. According to the principles of aerodynamics, when high-speed airflow contacts the surface of an object, a pressure difference will be formed on the surface of the object. This pressure difference can overcome the adhesion between dust particles and the surface of the object, so that the dust particles will break away from the surface of the object and enter the airflow.
In order to ensure efficient dust removal, the uniform distribution of airflow is crucial. An air shower room usually has a flow equalizer or a special nozzle design to achieve uniform distribution of airflow. The flow equalizer can make the filtered air uniform before entering the air shower area to avoid the situation where the airflow is too strong or too weak locally. At the same time, the reasonable design of the shape, size and spacing of the nozzle can also make the airflow form a uniform airflow field after blowing out, so as to blow the surface of people or objects comprehensively and evenly, and improve the dust removal effect.
The airflow in the air shower room is recycled. During the air shower process, the airflow with dust particles enters the return air system of the air shower room through the return air port, and then passes through the primary filter and the high-efficiency filter for two-stage filtration. The primary filter can filter out larger dust particles, while the high-efficiency filter can intercept smaller particles, ensuring that the air entering the fan becomes clean air after being filtered again and re-enters the air shower cycle. This circulating filtration system can continuously purify the air in the air shower room, ensure that the air shower room is continuously clean, and improve the dust removal efficiency.
In the airflow organization of the air shower room, the characteristics of turbulence and laminar flow are usually used. In the area close to the nozzle, the airflow is blown out in the form of turbulence. Turbulence has a strong mixing and diffusion ability, which can quickly blow up dust particles and disperse them in the airflow. In most areas of the air shower room, the airflow is in a laminar state. Laminar flow can keep the airflow in a stable flow direction, avoid the secondary flying of dust particles in the air shower room, and more effectively take the dust particles out of the air shower room.
The purification equipment air shower room uses reasonable airflow organization principles, including adopting appropriate airflow patterns, ensuring the impact of high-speed airflow, achieving uniform distribution of airflow, utilizing airflow circulation filtration, and combining turbulent and laminar flow. It can effectively remove dust particles that enter the surface of people or objects, provide good purification guarantees for clean rooms, and play an important role in industrial production, scientific research and other fields with high requirements for cleanliness.
