Exhaustors

An exhaustor is a device used to remove fumes, dust, or other airborne contaminants from a specific area. They are commonly found in industrial settings, workshops, kitchens, and laboratories where processes might generate harmful or undesirable airborne substances. The primary function of an exhaustor is to create airflow that draws these contaminants away from the source and expels them to an appropriate disposal location, often outdoors or through a filtration system.

There are several types of exhaustors, differing in their design and application. Local exhaust ventilation (LEV) systems are designed to capture contaminants at their point of origin. Examples include fume hoods in laboratories, canopy hoods above cooking equipment, or dust extraction arms in woodworking shops. General dilution ventilation, on the other hand, aims to reduce the concentration of contaminants in the air by introducing fresh air and exhausting stale air from the entire space. Exhaustors typically consist of a fan, ductwork, and an inlet or capture hood. The fan generates suction, pulling air through the ductwork. The design of the capture hood is crucial for efficient contaminant removal.

The effectiveness of an exhaustor depends on factors such as the volume of air moved (airflow rate), the velocity of the air at the capture point, and the appropriate design for the specific contaminant and process. Regular maintenance, including cleaning of filters and inspection of ductwork, is essential to ensure continued optimal performance and to prevent potential health hazards or fire risks associated with accumulated dust or grease.