10,000-level clean room fresh air unit installation
10,000-level clean room fresh air unit installation
The fresh air unit is suitable for the clean room that generally adopts the fresh air system, and is often used in conjunction with the fan coil system.
The 10,000-level clean room fresh air air conditioning unit is also called fresh air air conditioner or fan box. It is simpler than the combined air conditioning box. It is generally composed of an air filter, a cold heat exchanger and a blower...
Text label: Class 10,000 clean room installation, fresh air unit installation, purification equipment installation
10,000-level clean room fresh air unit installation
The fresh air unit is suitable for the clean room that generally adopts the fresh air system, and is often used in conjunction with the fan coil system.
The 10,000-level clean room fresh air air conditioning unit is also called fresh air air conditioner or fan box. It is simpler than the combined air conditioning box. It is generally composed of an air filter, a cold heat exchanger and a blower. According to seasonal changes, the required cold and heat sources are supplied by pipes provided by the external computer room. Commonly used fresh air units are horizontal, vertical and ceiling. For the horizontal fresh air unit, after the fresh air enters, it is cooled (heated) by the filter and the surface, that is, sent out by the fan. When in use, the outdoor air passes through the filter, and then is cooled (or heated) by the cold (heat) exchanger and then sent to the air-conditioned room. Because it enters the air-conditioned room as fresh air, the air volume will not be very large.
In the clean room using this type of unit, each floor of the clean room is equipped with a unit for the use of the clean room on this floor, so that the operation of the unit can be mastered layer by layer according to the flow of personnel, compared with The daily running costs of setting up a central air conditioner are much lower. The cold (hot) water pipes supplying the fresh air unit for heat exchange are extended to the fan coil unit system of the clean room on this floor for personnel to adjust the operation of the fan coil unit by themselves. Of course, in the cold northern regions, the indoor temperature is mainly guaranteed by heating.
In the place of small clean room, the ceiling type fresh air unit is used to a large extent, and each floor of a large clean room can be equipped with thousands of ceiling type fresh air unit systems. The size of the ceiling-type fresh air unit is smaller than that of the horizontal or vertical unit. The bottom is a channel steel frame, and there are hoisting holes at the four corners. It is hung on the cast-in-place floor or beam with a suspender. Its aperture is determined by the weight of the unit and the diameter of the suspender. Manufacturer confirmed. And should be equipped with spring shock absorbers, rubber shock absorbers can be used for small units.
The following points should be paid attention to in the installation of the ceiling type fresh air unit:
(1) Before installation, you should first read the product samples and installation instructions provided by the manufacturer, and learn about its structural characteristics, weight and installation points in detail.
(2) Since the unit is hoisted on the floor, it should be confirmed whether the concrete strength grade of the floor at the installation site meets the load-bearing requirements and the mechanical vibration requirements for long-term operation. In fact, the design department should or has already done a good job of coordinating and coordinating among various disciplines during the construction drawing design stage. The construction unit raises this issue at the drawing review stage or before construction, mainly to further implement it in the drawing review minutes, or to Other text forms are specified.
(3) Under normal circumstances, the manufacturer should use the profiled steel base. During installation, the four lifting points are set at the four corners of the profiled steel base. The diameter of the boom is determined by the manufacturer, which is usually 2~3mm smaller than the bolt hole of the profiled steel base. , the actual dust-free clean project is generally about 20mm.
How the boom is rooted and fixed on the floor is very important. The construction unit should propose specific measures and obtain the consent of the design and supervision in the form of pictures and texts. Regardless of the weight of the unit, the boom should not be used. Expansion bolts are fixed to the floor.
(4) The boom should be of sufficient length. If it needs to be lengthened, lap welding should be used. The lap length should not be less than 6 times the diameter of the boom, and both sides should be fully welded to ensure the safety of hanging. The four hanging points of the hanging rod hanging base are fastened with double nuts. Zhongjing Global Purification can provide supporting services such as consultation, planning, design, construction, installation and transformation of clean rooms and clean projects.
(5) When installing the unit, special attention should be paid to the direction of the air inlet and outlet, the direction of water inlet and outlet, and whether the extraction direction of the filter is correct.
(6) During installation, special attention should be paid to protecting the connection threads of the inlet and outlet pipes and condensate pipes, and wrapping the sealing material to prevent water leakage at the pipe connections. At the same time, it should be noted that the condensate pan of the unit should be kept horizontal or slightly toward the condensate outlet. Tilt to protect the thermal insulation material of the condensate pan of the unit to prevent it from being damaged or falling off to produce condensate on the bottom surface. There should be a certain slope when connecting the condensate pipe of the unit, so that the condensate can be discharged smoothly.
(7) After the unit is installed, check the running direction of the blower, whether there is any abnormal sound and the balance of the operation.
(8) Canvas hose should be used to connect the air outlet of the unit with the air duct.
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