Generally speaking, there are three kinds of structural cracks in the clean room doors and windows.
The first type is the combination of diaphragm splicing and the installation crevice between diaphragm and clean room doors’ holes; the second type is the lap crevice between diaphragm and opening fan; the third type is the installation gap of glass or other core boards. The air leakage of clean room doors and windows we often mentioned is caused by the above three kinds of cracks.
Among the three kinds of structural crevices, the first and the third belong to fixed crevices and the second belong to movable crevices. They have different properties and different proportions in clean room doors and windows. Therefore, the air-tightness measures adopted in the closure of doors and windows of clean rooms are not the same, which is also an important step in the dust-free evolutionary engineering.
Processing of the fixed slot and the check of the installation gap is not only a relatively small number of each clean room doors and windows
today, but also it is very convert after the decoration of combination of the diaphragm and the hole, which is relatively easy to seal the interval gap.
The connection between the edge and the periphery of the entrance should be firm, not only the closed door and window of the clean room, but also the requirement of the structure of the door and window of the general clean room. As the force of the clean room doors and windows is large and fierce, the fixing point around the entrance of the clean room should be paid more attention and we should notice whether the distance and the fixing point around the entrance of the clean room are firm and stable. But for the closed door and window of the clean room, the filling of the crevice between the wall and the clean room holes or the window should also be close, and then covered with indoor and outdoor wall decoration layer to basically ensure the air tightness of this kind of gap, and the second kind of fixed gap is the installation gap of glass or other core board.
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