1. The mobile wood chipper machine exhausts air to make the indoor air thinner and reduce the indoor air pressure. Air flows into the room due to pressure compensation, forming a negative pressure zone. Air flows through the air inlet, which is centrally installed on one side of the factory building and on the other side.
2. The doors and windows near the wood chipper machine are tightly closed, forcing air to flow into the workshop through the doors and windows on the side of the air inlet. Air flows into the workshop in an orderly manner from the air inlet, passes through the workshop, and is discharged from the workshop.