Ventilation is a system that must be used in many different areas. Thanks to these systems, heavy and dirty air is discharged outside, while fresh air is allowed to enter inside. However, when it comes to ventilation system, many different elements and different systems are mentioned. Ventilation system is the common name of these.
The main task of fans used in places that need ventilation is to create a pressure difference and ensure air circulation. Fans work by blowing hot and cold air with their impellers. In this way, air circulation is ensured, the air inside is cleaned and the air is cooled.
Fans are one of the basic building blocks in the differentiation of ventilation systems. At first glance, you might think that they all perform the same task. However, each of these fans has different features and accordingly different areas of use. It is possible to talk about dozens of different types of ventilation fans. Below we will share with you the most commonly used fan types.
It is possible to examine the fan types used in ventilation systems in three different categories. These are according to the body structure, according to the areas of use and according to air movements.
Fan types depending on the body structure; wall type, duct type, roof type, cell and centrifugal fans. Fan types depending on air movement; axial, radial and mixed flow. Finally, fan types according to the place of use; domestic and commercial, industrial, jet, smoke exhaust, corrosion resistant and ex-proof fans.
The features of these fans can be expressed as follows;
Wall Type Fans: This type of fans can be mounted directly on the wall. They are generally axial type fans. They consist of impeller, motor and body structure. An air duct is generally used with this type of fans. The dirty air sucked by the fan is discharged directly from the louver.
Duct Type Fans: These fans can be installed between two ducts. In this fan, air flows linearly through the fan. There are radial, axial and mixed flow types.
Cabinet Fans: These are fans in which the impeller and motor are enclosed in a cabinet. Filters or heater and cooler batteries can be added inside the cabinet. By soundproofing the cabinet, it is possible to reduce the sound level to very low levels. In this fan type, the air can leave the fan at a linear or 90-degree angle.
Roof Type Fans: These fans can be connected to roofs or chimneys. They have different types as vertical or horizontal throw. In fans with horizontal throw, the air entering from the bottom of the body leaves the fan from the side surface at an angle of 90 degrees. In vertical throw models, the air entering from the bottom of the body leaves the fan vertically. There are different types as axial and radial.
Centrifugal Fan: Snail fans are the types where the air leaves the fan wheel tangentially to the blades at an angle of 90 degrees depending on the suction. In this fan type, the motor is outside the air flow. For this reason, these fans are widely used in industrial areas and industrial plants with heavy working conditions.
Axial Fan: These fan types create a pressure difference with the axial movement of the air in the environment. They are found in ventilation systems where high air flow and low-pressure systems are used. Depending on the area of use, they may have different body structures. They can be produced as duct type, roof type or wall type.
Radial Fan: It is one of the commonly used fan types. As a result of the pressure difference in these fans, the air movement proceeds by centrifugal force. In practice, air is sucked from the centrifugal fan impeller and sent perpendicular to the fan shaft. This fan type, which is used in situations where higher pressure is required, can also be used in high temperature and corrosive environments. Radial fan is widely used in ventilation systems in industrial plants. They can be manufactured as centrifugal type, duct type and roof type.
Mixed Flow Fans: In these fans, the air moves through the blades at a 45 degree angle to the suction opening. They can meet higher pressure losses than radial fans.
Industrial Fans: Industrial fans are generally used in factories, mines and power plants. In such areas, they are fans that can provide the high pressure and high flow rate required for both ventilation of the environment and different needs during the production phase. These fans with heavy construction are quite costly.
Domestic and Commercial Fans: We can also call these fans household general fans. These types of fans are generally used in homes, restaurants, shops and offices. They can be installed on the walls and windows of small environments. In this way, they provide ventilation of the environment directly and through a short duct. These fans, which are quite small, also operate extremely quietly.
Smoke Exhaust Fans: These fans are special types used in case of fire. They operate at specified temperatures and times to allow people to escape during a fire and to facilitate the intervention of the fire brigade. Thanks to these fans, fire smoke can be evacuated. Their special motors, body design and blades are designed accordingly.
Jet Fans: You may frequently encounter this type of fans. They are activated when toxic gases in tunnels and parking garages exceed the critical limit. In addition to cleaning the air in the environment, the jet fan also removes the smoke and heat generated in case of fire. These fans, which are specially produced for these purposes, can operate in both directions and have high thrust.
Exproof Fans: These fans are manufactured and certified according to ATEX standards. They are designed to prevent the explosion of explosive gases or dust.
Corrosion Resistant Fans: These fans are generally used in chemical production facilities. They are designed to remove corrosive gases from the environment. Special plastic materials are used for their bodies and blades.
Which Ventilation Fan Should You Prefer?
As seen above, there are many different types of ventilation fans. Which fan you prefer is directly related to where and what you will use it for. You need to make a choice depending on the environment and structure you will ventilate. You should get the necessary support by contacting experts in ventilation system installation.
The type of ventilation fan to be used in a large area will differ from the fans to be used in smaller areas. Even depending on the materials produced in industrial areas, you will need to turn to different fans. In addition, factors such as maintenance and cleaning should not be forgotten during the selection process. While smaller solutions are required for areas such as homes and offices, much larger fan solutions are required in industrial areas.
As ERF Group, we offer flexible solutions with the many different fan options we produce. By contacting us, you can get the necessary support from our experts and evaluate our advantageous offers.