How Industrial Exhaust Fans Work

The industrial exhaust fans are used to regulate the interior environment. They are used to control air pollution by venting out all the unwanted moisture, particulates, odors or any other contaminants present in air. At times, they can be incorporated in the heating ventilation and air conditioning systems. Installing these fans in a manufacturing plant aims at optimizing the quality of the production process.

Principle of operation

The exhaust fans are made up of the following key components: wheel, inlet cone, scrolls, shafts, bearings and an electric motor. All these components are assembled together to form a compact and robust equipment as shown below:

A complete assembly of the centrifugal sidewall exhaust fan, LBS-E-710

Since motors are used to rotate the fan blades, the blade system can be connected to the motor through a straight shaft or a belt. This will depend on both the design and the location of the shaft.  The direction of motion of the industrial exhaust fan blades will be determined by the rotating motor. The fan should only rotate in the direction recommended by the exhaust fan manufacturer.

Powering the motor will imply that the blades will also start to run. As the fan rotates, it will pull the undesired air. That is, the air will begin to flow towards the direction of the exhaust fan. For instance, when they are used to provide cooling effect, it’s the hot air that is pulled towards the direction of the fan. When the unwanted air is released to the outside environment, the desired air begins to flow to occupy the space left.

The industrial exhaust fans are designed with a number of sensors. The type of sensor will depend on the specific function of the fan. That is, they may have thermostats for those designed to provide cooling effect or smoke sensors for those designed to eliminate smoke. In some situations, they are used to eliminate humidity thus, they should have humidity sensors.

The position of an industrial exhaust fan will depend on the main task it should perform. That is, fans designed to eliminate hot air should be installed as high as possible i.e. closer to the ceiling. This is basically from the fact that warm air is lighter than cold air it rises upwards. This ensures that more of the warm air is removed from the room. All Leesii products come with installation manuals so, you must follow this strictly.

The Leesii industrial exhaust fans come in a wide range of designs and shapes. They use durable materials such as stainless steel alloy and carbon steel. The fans go through two main crucial tests: the running and performance tests. The fans are of high quality and reliable.