The working principle of the clean room laminar flow hood is mainly to filter the air through the air purification system, and then deliver clean air to the working surface through the blower to form a horizontal flow to prevent external pollutants from entering the equipment. Specifically, the clean room laminar flow hood uses the laminar flow principle to evenly distribute the air entering the equipment on the working surface to form a clean air layer. After the air is filtered through the high-efficiency filter at a certain wind speed, it is pressurized by the damping layer so that the clean air is sent to the working area in a unidirectional flow, thereby obtaining the flow pattern and cleanliness required for the work protection area. The laminar flow hood can be used alone or in combination, and its working area is the sterile core area.
The structure of the laminar flow hood includes components such as the box, fan, high-efficiency air filter, damping layer, and lamps. The fan provides power to draw air from the clean room and filter it through the HEPA filter, and then vertically passes through the operating area to provide ISO 5 (level 100) unidirectional flow air for the key area. The exhaust gas is discharged from the bottom and returned to the clean room area. This design can effectively shield and isolate the operator from the product to avoid product contamination.
During use, the front and rear panels of the clean laminar flow hood need to be kept closed to ensure the flow direction, uniformity of the air, and cleanliness of the working area. In addition, the filter of the clean room laminar flow hood needs to be replaced and cleaned regularly to maintain a good filtering effect. Before use, it is necessary to check whether the equipment is normal and ensure that all parameters meet the requirements. When using it, it is necessary to strictly follow the operating procedures to ensure the working environment's cleanliness and the staff's safety.
