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  • 影响无菌室气流的因素有哪些?
    来源: 浏览: 发布日期:2019-01-10
      无尘室内的工作桌等障碍物,在相接处均会有涡流现象发生,相对地在其附近之洁净度将会较差,的因素都有那些呢在工作桌面钻上回风孔,将使涡流现象减少低;组装材料之选择是否恰当、设备布局是否完善,亦为气流是否成为涡流现象之重要因素。那么?跟小编一起来看看吧。
      In dust-free room, there will be eddy current in the working table and other obstacles at the junction. Relatively, the cleanliness near the working table will be poor. The factors are those that drill air return holes on the working table, which will minimize the eddy current phenomenon. The proper selection of assembly materials and the perfect layout of equipment are also important factors for whether air flow becomes eddy current phenomenon. So? Come and see with Xiaobian.
      影响无尘室的气流因素很多,如制程设备、无尘室组装材、照明器具等,同时对于生产设备上方气流的分流点,亦应列入考虑因素。
      There are many factors affecting the airflow in the dust-free room, such as process equipment, dust-free room assembly materials, lighting appliances, etc. At the same time, the diversion point of airflow above the production equipment should also be considered.
      一般操作台或生产设备等表面的气流分流点,影响无尘室气流应设于无尘室空间与隔墙板间距2/3之处,如此可使作业人员工作时,气流可从制程区内部流向作业区,而将微尘带走;若分流点配置在制程区前方,将成为不当的气流分流,此时大部分的气流将流至制程区之后,作业员操作所引起的尘埃将被带到设备后面,工作台因而将受到污染,良率也势必降低。
    无菌室装修
      The air flow diversion points on the surface of general operating table or production equipment should be located at the distance of 2/3 between the dust-free room space and partition board, so that the air flow can flow from the inside of the process area to the work area while the dust will be taken away; if the diversion points are arranged in front of the process area, it will become an improper air flow diversion, at this time most of the air flow will flow to the process. After the area, the dust caused by operator operation will be brought to the back of the equipment, the worktable will be polluted, and the yield will be reduced.
      垂直层流式方向要保持均一气流必须:(a)吹出面的风速不可有速度上的差异;(b)地板回风板吸入面之风速不可有速度上的差异。速度过低或过高(0.2m/s,0.7m/s)均有涡流之现象发生,而0.5m/s之速度,气流则较均一,(21世纪80、90年代)一般无尘室,其风速均取在0.25~0.5m/s之间。。
      In order to maintain uniform air flow in the vertical laminar direction, it is necessary to: (a) there is no difference in velocity between the outgoing air velocity and (b) there is no difference in velocity between the suction surface of the floor return air plate. When the velocity is too low or too high (0.2m/s, 0.7m/s), eddy currents occur, while when the velocity is 0.5m/s, the air flow is more uniform (in 1980s and 1990s) in general dust-free chambers, and the wind speed is between 0.25 and 0.5m/s.
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