Why is the (supply) air box a must for purification projects?

Speaking of supply and exhaust air boxes, they are common in purification projects. Generally speaking, they are placed at the top of the floor or in the mezzanine, playing a key role in the ventilation duct. So what are the uses of these supply and exhaust air boxes in purification projects? Below, Zhongjing Purification will give you a brief introduction to the main uses of exhaust (supply) airboxes.
Before understanding the main uses of supply and exhaust air boxes, you need to understand their structure and principles.
The structure of the supply and exhaust air box is relatively simple, mainly composed of core components such as fans, shock absorbers, filters, and motors. As a power device, the fan is responsible for driving the airflow. Different types of fans are selected according to the application scenarios to meet the requirements of air volume and air pressure. The shock absorber is installed between the fan and the box body, which effectively reduces vibration and noise during operation, prolongs the life of the equipment, and reduces the impact on the environment. The filter is used to purify the air and remove dust and particulate matter, and different grades of filters can be selected according to the cleanliness requirements.
The supply and exhaust air box is an air distribution box that is directly connected to the supply outlet of the HVAC equipment, heats or cools the air, and distributes it to the duct system of each room so that the body feels comfortable in the house. Primary, medium, and high-efficiency filter exhaust (supply) air boxes are used for fresh air filtration, return air filtration, exhaust air filtration, and boost filtration of airflow in each branch duct in the central air conditioning system. Its installation position is flexible. After connecting to the ventilation duct, it can meet the design requirements of different clean levels in different areas.
In some clean workshops, due to the unique requirements required for production, the indoor airflow pressure needs to be strictly controlled. For example, laboratories, wards, pharmaceutical factory buildings, electronic product production plants, etc., all kinds of dust, harmful gases, and harmful substances are inevitably discharged during use or production. To prevent them from spreading in the clean room and the harmful substances produced from polluting the indoor air, these harmful substances are captured on the spot through exhaust hoods or air inlets, and transported to purification equipment for treatment by pipelines. After meeting the emission standards, they are reused or discharged into the atmosphere. It ensures the minimum amount of fresh air in the used space and maintains a constant positive pressure (negative pressure) in the clean room.