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本帖最后由 beiwei5du 于 2015-11-8 17:48 编辑
Airlock Designs In general, there are three basic airlock designs thatcan be combined or used individually to protect the clean room and/or preventcross contamination between two adjacent areas of different process operationsserved by two different HVAC systems. These three airlock systems are: 1. The cascading pressure airlock 2. The pressure bubble 3. The pressure sink Cascading Pressure Airlocks The cascadingpressure airlock is used to protect clean areas from adjacent areas with lowerrequired cleanliness. Normally, in this type of airlock, the movement ortransfer from the cleaner area to the lower classified area or Hallway whichdoes not pose any issue with cross contamination. Pressure Bubble The pressurebubble airlock is used to create a barrier between the clean room where theprocess resides and the adjacent area or area with lower air classification. As thename implies, this type of airlock is a pressurized space that pushes the air out andinto both the areas it protects. This type of airlock creates abarrier between the two spaces it serves, thus preventing cross contamination. Pressure Sink The pressure sinkairlock is used to create a barrier between the clean room where the processresides and the adjacent area or less classified area. This type ofairlock is a negatively pressurized space that pulls the air in from both theprocess area and the adjacent space thus creating a barrier between thetwo spaces it serves. A combination of sink and bubble air lock design is alsoused for creating a barrier between Potent compound or bio-contained cleanareas and the adjacent space.
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发表于 2015-11-8 17:30:19
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