We have encountered many customers who have installed a large number of axial fans in high temperature plants. But the workshop was still so stuffy, and there was still so much dust and odor. What is the reason? If everyone is standing next to the axis of the axial flow fan, you will not feel the airflow at all, although there is a lot of wind on the axis. His air flow is linear. It is rarely driven by the surrounding air. It's like a high pressure faucet spraying water, standing on the side of the stream, your body won't get wet.

    The negative pressure fan is different. The negative pressure fan is like a reverse sprayer. Its absorption of air is horn-shaped, not only driving the airflow of the fan axis, but the horn-shaped scrolling air from the fan outward. When we stand next to the axis of the fan, we also feel a strong air flow. Its characteristics determine the thoroughness and high efficiency of its exhaust.

    Another important point is that when installing a negative pressure fan, the wall on the side of the fan must be sealed. Especially there must be no gap around the fan. We often see many customers install many negative pressure fans by themselves, but the workshop is still very stuffy, so they judge that the negative pressure fans have no effect. I have seen many scenes, often a large window. After installing a fan, the sashes next to the fan are open. It is conceivable that a large amount of air is only circulated around the fan, and of course it cannot absorb the air in the distance of the workshop.

    The most ideal way to install a negative pressure fan is to close the wall on the side of the fan and the nearby doors and windows, and open the doors and windows on the opposite side of the fan to ensure that the air flows in a straight line.