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Airtight design of clean room doors and Windows

Industrial modular Clean Room time:2022/07/07 10:29:56 click:180
  1. Treatment of cracks in clean room doors and Windows Generally speaking, clean room doors and Windows mostly have three types of structural cracks.

  2. Airtight design of clean room doors and Windows

One is a combination of assembling and assembling and installation gap between door and door opening of clean room;

Category two is a lap gap between door frame and open fan; Three types of glass or other core plate installation gap. Usually the air leakage of clean room door is nothing more than a problem caused by the above three cracks.

Among these three types of structural crevices, the first and third types belong to fixed crevices, and the second type belongs to active crevices. Different properties and their proportion on the clean room door and window are also different. Therefore, the airtight measures taken for the door and window of the clean room are not exactly the same, which is also an important step in the dust-free evolution engineering.

A. The installation gap of the fixed gap is not only relatively small in the number of doors and Windows of each clean room, but also the combination of door or frame with the hole is relatively hidden after decoration, and it is A relatively easy to seal the fixed gap.

Connects to the mouth of the cave surrounding edges should be strong, is not only a closed clean room doors and Windows, or a general requirement of clean room door main structure, due to the stress of the clean room door big and fierce, especially in the clean room door fixed cheng cheng and should be paid attention to the hole around the fixed point is stable, but for closed clean room doors and Windows, also must emphasize chamber with clean room door or zhou tong to fill in the gaps between the compaction, After covering with indoor and outdoor metope decoration layer can basically ensure the air tightness of this kind of gap, the second type of fixed gap namely glass or other core plate installation gap.

In an orange clean room door aperture number relative proportion of small, but in a chamber often is the main part of the structure of the main crack, especially for the main, they are exposed to the atmosphere, influenced by the outdoor climate, must be handled carefully, on the one hand, try to minimize the core glass installation gap, on the one hand, carefully choose fortify structure.

B. Handling of active gaps How to lap the opening fan and frame material of the clean room is the key to the seal design of the clean room door. The gap at the lap joint is different from the fixed gap, because the movable fan needs to be opened, the sealing measures can be taken "once and for all".

Relative Yu Zhou, clean room door open door more, activity gap in a pinch of clean room door occupies a larger proportion in the total number of structural cracks, clean room doors open than zhou is frequent, and clean room doors around the crack are more complex, the working conditions of single flat open clean room door, for example, the two sides along the vertical, The side of the hand is often subjected to all kinds of friction or collision, the side of the hinge is installed because of the rotation of the fan and the direction of the force applied to the bore and the other three sides are completely different.

The threshold of the clean room should be treated with special structure according to different requirements of transportation and people. There are three sides in the gap of the four sides of a single flat clean room door that need different treatment, and the middle seam of the double clean room door is also special structure. Therefore, in the design of clean room door, the sealing treatment of active gap is a more prominent problem. The groove size and groove form of opening fan and frame material overlap are important problems that must be paid attention to in the sealing design of movable gap.

Village bureau, frame, hardware, airtight strip and its mode of action should be considered comprehensively, so that they can coordinate with each other in structural collapse and stress state to achieve the purpose of sealing. In particular, it should be pointed out that the clean room door is bigger and heavier than the window sash, and the force applied when the seal is pressed is much larger, especially in the usual always open and close rotation, so it is necessary to focus on the selection of hardware from the aspects of controlling the sagging of the clean room door and ensuring the stiffness of the clean room door.

Flat open closed clean room door is the most used type of clean room door in clean workshop, usually for passage or transportation. Handy for emergency evacuation in case of fire.

Generally, elastic materials with formed sections are used as sealing strips to fix and seal the joints. The width of the hole of the common clean room door, the clean room door in the double fan is less than 1800 mm, and the clean room door outside the double fan is more than 2100 mm; The height of the hole is roughly within 2400 mm.

Setting of airtight strip. Often in the clean room doors opening and closing under the condition of traffic, except some clean room door to avoid heavy equipment transport collision with the potential for clean room gate house face all the airtight article set on the clean room doors, or some clean room door due to transportation workshop do not allow the threshold set in the ground clean room only in the clean room close to the ground at the bottom of the door leaf hanging sweeping article airtight installation, In general, in order to make the airtight strip as far as possible to avoid hand mold, foot or car collision, less affected by people and transportation, the length and width of a few millimeters of small section shaped elastic airtight strip is laid in the hidden groove of the clean room door, and then pressed by the close of the clean room door fan.

The sealing strip should be laid continuously along the periphery of the active gap, in order to form a trapped closed ring sealing line after the clean room door is closed. When the airtight strip is respectively set in the clean room door and clean room door fan two, we must pay attention to the ceramist has a good connection, minimize the airtight strip in the clean room door crack small break gap.