High-efficiency filter air outlet for clean room workshop
High-efficiency filter air outlet for clean room pharmaceutical cleanroom
High-efficiency filter air outlet is the terminal equipment in the air purification system, and also includes laminar flow hood, fan filter unit FFU, self-purifier and other air supply equipment. The high-efficiency filter air supply port is composed of a high-efficiency filter and an air supply port, and also includes parts such as a diffuser plate and a pressure frame;...
Text label: clean room high-efficiency filter, clean room high-efficiency air supply outlet, clean room design and installation
High-efficiency filter air outlet for clean room pharmaceutical cleanroom
High-efficiency filter air outlet is the terminal equipment in the air purification system, and also includes laminar flow hood, fan filter unit FFU, self-purifier and other air supply equipment. The high-efficiency filter air supply port is composed of a high-efficiency filter and an air supply port, and also includes parts such as a diffuser plate and a pressing frame; the air supply port is a box-shaped device made of cold-rolled steel plate, and the surface is treated with plastic spray or baking paint. Lifting ring, screw or nut, air inlet flange, thermal insulation material is also installed in the static pressure box, and the thermal insulation material is covered with 0.3mm galvanized steel plate. The specifications of the air outlet of the conventional high-efficiency filter are determined by the specifications of the high-efficiency filter installed in it. Usually, the air supply volume is 500m3/h, 1000m3/h, 1500m3/h, and the built-in high-efficiency filters are 320*320*260 , 484*484*220, 630*630*220; for a high-efficiency air outlet with an air volume of 500m3/h, a 320*320*220 high-efficiency filter is installed inside, so the rated air volume is less than 500m3/h. Notice.
The air supply port with diffuser orifice plate, the aperture of the diffuser orifice plate is generally 8mm, and some have a pore diameter of 6mm. The aperture size should be matched with the aperture ratio. The plate has a convex structure, which has a good effect on the diffusion of clean airflow. In the clean room, the air supply temperature is lower than the indoor temperature in summer, and generally higher than the indoor temperature in winter. Therefore, it is necessary to conduct thermal insulation treatment on the wall surface of the air supply port to ensure that the air supply parameters meet the design requirements. The inner wall of the static pressure box in the air outlet is pasted with thermal insulation materials that meet the requirements, and the outer surface of the thermal insulation materials is covered with thin galvanized steel plates to prevent the thermal insulation materials from falling off dust. The upper air inlet requires a larger installation space, that is, there should be a larger space above the ceiling, and the air intake air diffuses well in the static pressure box. This kind of air outlet is suitable for new buildings or high-rise buildings; The side inlet air supply port, the air inlet air flow needs to be turned in the static pressure box, and the diffusion performance of the air intake air flow in the static pressure box is not as good as that of the upper air inlet air supply port, but the installation space required is small, and the clear height of the ceiling interlayer It can be installed as small as 800mm, so it is suitable for high-floor buildings, especially when existing buildings are transformed into clean rooms, but the air inlet flange should be detachable, otherwise it cannot be installed in the installation hole of the ceiling. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.
The commonly used diffuser plates for high-efficiency air supply ports have two forms: diffuser orifice plates and flat diffuser plates. The former is convex in shape, and the four slopes and the ground plane are densely covered with round holes with a diameter of 6mm or 8mm. The slope and the ground are clamped The angle is 135°, and the diffusion angle of the clean air flow is large and uniform; the latter has a flat shape, the central area is densely covered with round holes with a diameter of about 3mm, and the periphery is evenly slanted. At the included angle, the diffusion of clean airflow is sprayed out to the surrounding by these peripheral diagonal slits. The airflow velocity in the slits and the airflow velocity in the central circular hole area are very uneven, resulting in more eddy currents, and the mixing, diffusion and dilution effects are poor. Attention should be paid to the selection of the air outlet of the high-efficiency filter: when the installation space is sufficient, try to choose the air outlet with the top air intake; the surface coating of the air outlet should be sprayed or painted as much as possible, and spray paint should be avoided; the diffuser plate should be convex. Diffusion orifice plate; thermal insulation type air outlet should be used; try to choose the air outlet of the pressing frame type pressing structure, this structure is evenly stressed when pressing the high-efficiency filter.
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