Negative pressure is a process of energy conversion that allows air to create convection in the workshop. The negative pressure horn fan is driven by electricity to convert into kinetic energy and wind energy to exhaust indoor air from the outside, thereby reducing indoor pressure. Under the action of atmospheric pressure, fresh outdoor air is replenished from the opposite window and door where the negative pressure horn fan is installed, generating air convection negative pressure.

Sources of poor working environment - solar radiation, mechanical heat sources, factory structure, and odors during intensive production processes. Oil fume. The negative pressure horn fan can quickly expel indoor air from the outside, creating a fresh and natural working environment through air convection.