What Is a Duct Fan?

Exhaust fan, a type of air-conditioning appliance that drives the air blades to rotate and drive the airflow to exchange indoor and outdoor air. Also called ventilation fan. The purpose of the exhaust air is to remove the dirty air in the room and adjust the temperature, humidity and sensory effect. Exhaust fans are widely used in homes and public places.

Exhaust fans can also be called exhaust fans, exhaust fans, ventilating fans and other names, but the product is still the same, presumably we have already understood this. However, the exhaust fan specifications are 146 * 146 * 95cm, 138 * 138 * 40cm and other specifications .Exhaust fan with a maximum air volume of 8000m3 / h uses a special motor with a die-cast aluminum alloy housing, and the protection level reaches the highest level of IP12. The motor can be used continuously for 2400 / hour without interruption. The shell is made of FRP (glass fiber reinforced plastic), which is lightweight and insulated, does not rust, does not age, is resistant to humidity, acid and alkali, is durable, and has a long service life. The shape uses unique flow technology, waterproof and rainproof. Adopting special motor, the direct structure is maintenance-free (change the traditional belt drive) to improve functions, simplify the structure, and reduce maintenance costs. The air flow principle shutters do not consume electricity, do not need to be opened and closed, and can effectively prevent rain intrusion. The planned installation does not take up space, does not require air ducts, and can be installed anywhere. In the field of exhaust ventilation: It is installed outside the workshop window. Generally, the downwind outlet is selected to extract air from the louver negative pressure fan to extract odor and hot air. There are many applications in general factories. ^[1]

1. Suitable for workshops with high temperature or smell: such as heat treatment plant, casting plant, plastic plant, aluminum plant, shoe factory, leather factory, electroplating factory, various chemical factories. 2. Suitable for

1. Before installation, first check whether the parts of the exhaust fan are complete and safe, and check whether the shell and blades are deformed or damaged due to the transportation process. Otherwise, it should be used after it is determined to be normal after repair. 2. Before installation, check whether the exhaust fan has sufficient strength and whether the fixing screws meet the fan installation hole size. 3. Check whether the frame and wind blade are deformed, whether the fan blades are rotating flexibly, and whether there is friction. Check whether all fasteners are complete and tightened. 4. Before installation, check that the positions and installation dimensions of the air inlet and air outlet are relative. 5. The line voltage must match the rated voltage on the motor. 6. The non-wiring parts of the motor cannot be dismantled randomly. When wiring, open the cover of the wiring room, penetrate the leads and connect to the terminals. After connecting, cover the cover and tighten the screws to make the gap less than 0.2MM. 7. Check whether the rotating parts touch each other and whether the fasteners are firm. 8. Before use, check whether the rotation direction of the wind blade is consistent with the fan. 9. The exhaust fan in use should always clean the dust and other accumulations on the motor to avoid affecting the heat dissipation. 10. Before starting the fan, check whether there are any objects in the fan, such as tools, that hinder the rotation of the fan. 11. When the fan that has not been used for a long time is re-used, it should be checked again according to the instructions and cleaned up properly before being used. ^[1]

Exhaust fan maintenance personnel must pay attention to the following points: 1. It can only run when the fan equipment is completely normal. 2. If the fan equipment is started after maintenance, pay attention to whether the parts of the fan are normal. 3. Regularly remove dust, dirt, water and other impurities inside the fan and gas transmission pipeline, and prevent rust. 4. Repair of fan equipment is not allowed during operation. ^[1]