Air supply mode in clean workshop

Air supply mode of clean workshop

Large area of u200bu200bclean workshop production area, special process area and central corridor are arranged in the area, high-clean product aisles and micro-environment devices are set up at key points; the large space on the upper floor is used for arranging the air supply pipe network or for supplying air The air static pressure box, and its lower quasi-clean area is used to arrange from the clean area...

Text label: clean pharmaceutical cleanroom design, clean workshop engineering, air supply mode

Air supply mode in clean pharmaceutical cleanroom

Large area of u200bu200bclean pharmaceutical cleanroom production area, special process area and central corridor are arranged in the area, high-clean product aisles and micro-environment devices are set up at key points; the large space on the upper floor is used for arranging the air supply pipe network or for supplying air The air static pressure box, the quasi-clean area on the lower layer is used to arrange the equipment, process facilities and the pipe network of the central public facilities removed from the clean area. There is no return air space between the facility layer and the process layer, and shafts are set around the clean area for There are three main types of circulating air systems, namely fan filter units, fan shafts and decentralized circulating fan units. The fan filter unit is composed of a built-in centrifugal fan, a muffler device and a high-efficiency filter. It is compactly assembled in a metal box. If the fan unit is required, it can be installed in a dry coil, which can control the temperature of the clean workshop area within a strict within the range. On the ceiling of the clean process, the fan filter unit can be set directly according to the process requirements to form different levels of clean areas. The fan filter unit is used for circulating air circulation, which is very simple, but cannot generate too much static pressure; due to the cleanliness The pressure in the workshop is higher than the pressure in the ceiling of the filter, and it is impossible for dust particles to penetrate from the ceiling to the clean area, so a cheaper ceiling system can be used, that is, the air filter and the ceiling grille only need to be closed. Hole elastic sealing gasket, which can be sealed by pressing with a pressing device.

The circulating fan is a distributed assembled air handling unit, which is typically composed of a dry cooling coil and a centrifugal fan. It is directly installed on the upper part of the clean process layer. The return air shafts are arranged on both sides of the building. The centrifugal fan can Generate enough pressure head to meet the static pressure required for the airflow to flow through various components on the return air passage, and can also greatly extend the life of the end filter, but when the total flow increases too much, the size of the fan, the cost, and the noise generated by the fan It also increases accordingly; in this mode, the pressure in the air supply static plenum is still higher than the clean process layer, so the liquid tank must also be sealed. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean workshops and clean workshops.

The fan shaft air supply mode uses the shaft space on both sides of the building to install the circulation unit, then the axial flow fan is the most suitable, and the muffler is combined together, which is quite compact and efficient, so it is also economical; the roof truss does not need to bear the circulation unit, and the load can be reduced , the building structure is also reasonable; the air supply static pressure box is arranged between the roof and the filter ceiling, and the pressure in the air supply static pressure box is higher than that of the clean process layer. Therefore, liquid tank sealing has to be adopted. The sealant is injected into the liquid tank, and the air filter with a knife edge around it is inserted into the sealant, resulting in an airtight seal with the liquid ceiling grille, and it is also more convenient to install and change the air filter; the advantages of the axial flow fan It is able to efficiently deliver more air with relatively low static pressure, and can easily and efficiently change the air volume.

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