Decontamination operation room cleaning: flow line is not parallel, uneven flow rate, direction is not single, and cross cyclotron air flow in all sections of the work area. Mixed flow, also known as local unidirectional flow, is distinguished by the ratio of cloth to cloth. The vertical flow ratio is less than 60%, and the horizontal flow is less than 40%, all of which belong to the local unidirectional flow.
Laminar flow operation room purification: airflow parallel, uniform flow and single direction flow through the work area of the room, divided into vertical laminar flow and horizontal laminar flow.
1, vertical laminar flow: the high efficiency filter is installed on the roof, the whole roof is a filter layer, the air flow is vertical downward, and the return air inlet is located on the floor of the floor.
2. Horizontal laminar flow: the filter is installed on the side wall of the ankle of the operative patient, and the air is blown horizontally. The return air inlet is located on the roof on the opposite side of the wall.
Note: when horizontal air flows, obstruction of airflow is affected by the body or napkin of the operator, which affects the cleanliness of the operative area.
When vertical air flows, the incision also increases the chance of bacterial infection on the upper air outlet of the operator's head, and the investment is high.
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