動態傳遞箱

Dynamic Pass Box

A dynamic pass box ； 指內部氣流動態的傳遞箱，具有自迴圈氣流模式。 將清潔空氣供應到腔室中，同時排出污染空氣，保持傳遞箱內的清潔。

The dynamic pass box is equipped with a fan and a filter. The fan draws air in, and the filter purifies the air before blowing it into the pass box, pushing contaminated air out through the exhaust port, thus creating a continuous circulation.

Compared to a static pass box, the dynamic pass box includes an additional air filtration process and components that provide self-circulating airflow. Therefore, for the same internal dimensions, the external dimensions of a dynamic pass box are larger, and its manufacturing cost is higher than that of a static pass box.

動態傳遞箱的分類

動態傳遞箱可進一步分為；層流通過箱 and air shower pass boxes.

Laminar Flow Pass Box

A laminar flow pass box provides vertical laminar airflow. From top to bottom, the pass box is sequentially equipped with a fan, a filter, and a flow straightener (perforated plate/flow homogenizing film). The internal airflow follows a top-supply, bottom-return pattern. The airflow velocity from the flow straightener meets laminar flow requirements.

Air Shower Pass Box

Unlike the laminar flow type, the air shower pass box is not equipped with a flow straightener. Instead, it features circular nozzles at the air outlet. During operation, clean air filtered by the HEPA filter is blown out from the nozzles at a velocity of no less than 25 m/s ； （典型值），清除被轉移物品表面的灰塵顆粒。 然後，去除的污染物通過出氣口排出或再迴圈到進氣口，再次過濾，並通過噴嘴吹出。 此迴圈形成一個；micro self-circulating clean environment.