Ventilation - forced air exchange in the room in order to create favorable conditions for humans. An industrial exhaust fan is designed to exhaust the exhaust air outside the premises through special air ducts. It is appropriate for industrial facilities, warehouses, supermarkets, food plants, agricultural facilities, offices and cottages with a powerful ventilation system.
What is it for?
An industrial exhaust fan is one of the elements of the climate system. It is suitable for supply, exhaust and supply and exhaust lines. Equipment can operate in one of two modes: pumping or stretching the air flow, depending on which direction the blades are directed. From the correct calculation of performance and selection of the type of device will depend on the operability and efficiency of the system as a whole.
Important! An industrial fan must remove hazardous gases, vapors and toxic substances arising during production processes from the workshop.
Tasks of industrial ventilation equipment
An industrial fan is installed in industrial facilities to increase air exchange efficiency. It is much more powerful than the domestic analogue, therefore it is suitable for ventilating large areas. A wide range of types of coolers and configurations allows you to choose equipment for ventilation systems of any complexity. Industrial models are designed to solve such problems:
- local removal of metal and wood chips, dust from the working surface of machines;
- flue gas removal, steam injection into the boiler room;
- local removal of dust and slag during welding;
- dusty air intake during production processes with increased dust formation;
- general air exchange in a large area in accordance with sanitary standards;
- grain transportation by air flow, including waste disposal of its processing.
What are the components of industrial duct fans for ventilation?
The main structural elements of the fan include the casing and the electric motor, which starts the turbine, consisting of many blades (impeller). They have low aerodynamic drag.
The flow rate and efficiency depends on the power of the electric motor. Exhaust coolers smoke exhaust introduce as an additional component of the climate system. They are subject to increased demands on performance and reliability.
How does an industrial exhaust fan work?
Fan power is determined by the rotational speed of the impeller. The size of the blade is from several tens of sentiments to several meters, depending on the type of equipment. The turbine is made of high quality plastic, stainless steel or aluminum alloys. It is quite light, so it does not require large amounts of electricity for rotation.
In most models of industrial devices, the power does not exceed 800 watts. Units are connected to a 220 V power supply network or from a three-phase network, depending on the type of cooler.
Classification of industrial exhaust fans
Industrial fans are distinguished by type of attachment and device design. There are models in the assortment for local cleaning of workplaces and general conditioning. Exhaust models are appropriate for the supply and exhaust system, since they provide air inflow and outflow, they differ in type of attachment.
By type of mount
Window models are embedded in a window opening or window leaf. They are quiet, light in weight and small in size. A check valve is installed on the outside of the cooler to prevent air from being thrown into the room. Industrial appliances are connected to a three-phase network.
Floor standing devices belong to large-sized installations on castors. The fan moves easily around the territory. The unit does not require a fixed connection to the duct. The tilt is adjustable using the knobs.
Duct fans are suitable for ventilation and air conditioning systems with ducts having a round, square or rectangular cross section. They are installed directly inside the duct for drawing.
Ceiling coolers are suitable for buildings with high ceilings. They are embedded in air conditioning systems to even out the air temperature evenly. They are compact, low noise, do not violate the design of the room.
On the device equipment
Axial models for hoods are a wheel in a cylinder that rotates. Such devices are sold in standard sizes or are made to order for any ventilation systems. Coolers are used in many fields of activity. They are introduced into the ventilation duct quite simply and do not require frequent preventive maintenance.
Radial models are characterized by increased performance. They are designed to remove flue gases and toxic substances. To them belong devices of the "snail" type. During the rotation of the turbine, the air flow enters the rotor. Gradually rotating inside the case, he leaves the device. In this case, the air stream is cleaned of impurities.
What are the radial fans for hoods intended for (industrial)
Radial fans are capable of moving a large volume of air masses. They got the name due to the location of the spiral-shaped blades. The impellers are bent forward or backward. The movement of air in the housing occurs due to the centrifugal force that is created inside the rotor with the help of working blades. There are roof and channel models. The ventilation intensity is controlled by changing the voltage supplied to the electric motor. The range includes high and low pressure devices.
Roof fans are installed outside the premises, so they do not violate the integrity of the interior, save the interior space in the room. They are mainly used for smoke removal. A visor on the cooler prevents water from entering the case. Channel models are represented by classic snail-type coolers, centrifugal and dust models.
What you should know before installing an exhaust fan in an industrial building?
The fan is selected in accordance with the type of ventilation - for discharge, exhaust or combined action, as well as the diameter, configuration and location of the ventilation duct. When choosing a specific model, you must consider:
- area and volume of the room, its architectural features;
- the number of ducts, their configuration, temperature;
- the length of time during which he must work;
- the number of workers, workload of the workshop and the location of jobs;
- features of the equipment that affect air quality and microclimate.
Important! When calculating the need for fresh air, the influx of clean air in an amount of at least 20-30 m2/ h for 1 person.
It is recommended to install filters in the ventilation ducts that allow less frequent preventive cleaning of the duct. Direct or electric actuated dampers are required to shut off some parts of the duct in order to limit backflow of air. To heat the air masses additionally provide heaters.
Popular companies producing industrial exhaust fans for business
The assortment includes fans of domestic and foreign production. Models differ in the presence of various additional options, so they are perfectly implemented in air conditioning systems. The Shuft trademark offers window and axial coolers, silent in work, easy to install. The manufacturer occupies a leading position in the production of industrial models.
The "Mess" range is distinguished by a robust metal case made of stainless steel, low noise. The TYWENT brand represents a wide range of industrial and domestic fans of various types. Manufacturers "SAMA" and "SAVIO" offer roof models, high-pressure apparatuses, discharge coolers, radial fans. The Dospel line includes household and industrial appliances, including overhead models.
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