Direct Drive Exhaust Fan | Direct Drive Large Exhaust Fan

Especially, there should be no gaps around the fan. As you know, many high-temperature workshops are equipped with a large number of axial fans, yet the workshops remain闷热and filled with dust and odors. The surrounding air is seldom circulated. For instance, if you stand beside the axis of an axial fan, you won't feel any airflow, even though there's a strong breeze along the axis. A vacuum fan is like a reverse spray nozzle; it absorbs air in a conical shape, not just along the fan axis. It creates a conical airflow from inside the fan outward. Standing next to the fan axis near the impeller powder machine will also make you feel a powerful airflow.

Direct-drive Negative Pressure Extraction Fan, Direct-drive Large Extraction Fan

The motor label on a vacuum fan indicates the motor's protection class, which represents its insulation and waterproofing levels. Generally, vacuum fans with higher protection classes have better motor quality and are more expensive. A higher protection class allows the motor to withstand higher temperatures, meaning it can operate continuously for longer periods. The sealing and waterproofing can also be determined from the protection class parameters; the higher the class, the better the resistance to liquid penetration, and the better the insulation. Conversely, a lower protection class indicates poor insulation and lower temperature resistance, resulting in a shorter lifespan compared to motors with higher protection classes. In such cases, it is necessary to customize the order with the manufacturer.

Direct-drive large exhaust fan, direct-drive large air extractor

Power specifications of vacuum fan motor

The core component of a vacuum fan, the motor, is an electrical component. The motor power indicated on the motor label typically represents our electricity consumption. This value is usually expressed in kilowatt-hours (KW). For a 0.75 kW motor, it means the motor consumes about 0.75 kWh of electricity in 1 hour. Users can calculate the circuit load, electricity consumption, and electricity costs based on this power parameter of the vacuum fan motor. It's generally advisable to leave some room in the circuit, exceeding the motor's load capacity.