Axial fans: characteristics, types and installation

The influx of fresh air is very important for a person's well-being and overall health. But not always it can be provided in a natural way. In this case, special ventilation equipment comes to the rescue. It is necessary for the rapid removal of odors, pollution and carbon dioxide.

In this article we will talk about axial fans that can be installed both in apartments and office or industrial type buildings.

Axial fan - a device used in many areas. It is distinguished by its versatility and simplicity. At the heart of his work is the electric motor, which leads to the rotation of the axis and the blades, which are fixed on it.

These fans can be domestic or industrial, which determines their size. Household, as a rule, are installed in residential premises and offices. They have blades the size of several tens of centimeters. The most common are 100, 200, 300 mm. Industrial much more. Their blades can be several meters long. Such fans are installed in rooms with a large area.

Technical characteristics of devices are determined by GOST. For example, if we are talking about the materials from which certain parts of the fan are made. So, its blades can be plastic, aluminum, duralumin or stainless steel. The lighter the material, the less power the device requires to operate.

The duct fan is a highly specialized equipment. It is used exclusively in ventilation systems, which is the main difference from axial fans. This type of device is installed inside or in the rupture of air ducts for pumping air through the system. As a rule, it is the quietest among other types of fans.

Axial fans can boast a wide list of advantages, thanks to which they have become so popular among buyers. However, they are also not without flaws, like any other technique. Consider the pros.

• Axial fans practically do not emit noise when running air. Because of this, they are most often installed in apartments or offices.
• Simplicity. Devices, both household and industrial, are easily used. Even if we are talking about automatic models that require pre-configuration and programming. This process will not cause you difficulties.

• Availability - Models of this type differ in quite reasonable value. You can always choose the right fan based on your financial capabilities and preferences.
• Reliability - due to the simplicity of design axial fans break very rarely.
• Simple repair - for the same reason, in the event of a breakdown, it is easy to repair them with your own hands. At the same time, new parts are inexpensive.

• The presence of the bodywhich protects the environment from rotating blades. Almost all fans are equipped with protective grills.Some models have special panels with which the fan can be fixed in window openings or in ventilation.
• Regardless of the location of the ventilation its efficiency will not change.

The disadvantages of this species are much less. First, the need for care and maintenance. Contamination can affect fan operation. Therefore, it must be periodically rid of dust. Some models are equipped with protective shutters that protect the mechanism from dust penetration.

Secondly, many consider it a disadvantage that it is impossible to provide a room with medium or high air pressure.

Before talking about the principle of operation, it is necessary to determine which parts in the operation of an axial fan are the main ones. First of all, it is an electric motor, which is the heart of the whole mechanism. It is necessary to set the axis in motion. On it, in turn, fastens the impeller, consisting of screws and blades. All these elements are located in a round housing.

When turned on, the engine drives the axis, transferring rotational energy to it.The number of revolutions of the impeller corresponds to the number of revolutions of the engine. The blades, as a rule, are fixed at a certain angle in order to direct the distilled air along the axis.

The technical characteristics, which, as mentioned above, are determined by GOST, include the following points:

• engine power;
• number of blades;
• the size of the blades;
• the shape of the blades;

• impeller diameter;
• the direction in which the axis rotates;
• body shape;
• availability of protective mesh.

All these characteristics directly affect the operation of the fan, so they should be considered when choosing the most suitable device.

Axial fans have many varieties, which are determined by many different parameters. They can serve to cool the air, remove the products of combustion or reduce the temperature of various devices and mechanisms.

First, let's consider the types of axial fans, depending on their placement.

The most common type among buyers, as it is widely used in everyday life for airing the premises.They are lightweight, low noise, easy to move, easy to operate, and are distinguished by an affordable price. Today there are in almost every home.

More powerful devices for ventilation of rooms. As a rule, they are installed inside the ventilation shafts or at the exit from them. In the second version, they are closed with a special grill. In those rooms where increased cooling is required, such fans are complemented by diffusers, which increase aerodynamics.

The most simple and not expensive in terms of energy. Installed on the vents. Fastening in the opening is provided with a special panel. Ventilation of the room is produced in a natural way, but in this case you should not expect good results.

Respectively suspended from the ceiling on an elongated axis. Rotation is provided by natural air circulation. As in the previous case, does not bring significant results.

Mounted on the roofs of buildings. Most often, they are backed up by air or necessary to remove smoke.

Now let's talk about the types of fans, depending on their purpose.

This category includes all fans that are used to cool rooms and other residential premises. These also include the fans in the composition of other devices. For example, a cooler for cooling a computer system unit, a fan for cooling an engine in a car, or a fan, which is an element of a hot air blower.

Used to remove carbon dioxide, unpleasant odors and harmful gaseous substances.

Essential for cooling large rooms. The principle of operation is the active suction of air from the external environment. But the disadvantage is weak blowing. This problem is solved by the diffusers mentioned above.

Fans with the opposite principle to exhaust devices. That is, they weaker suck fresh air, but provide a powerful blowing.

Also, axial fans may differ from each other by type of enclosures.

Silent, not expensive in terms of energy, fans of small sizes. Also installed inside various devices and devices to provide cooling mechanisms.

This category includes most axial fans, especially domestic. The grille ensures maximum safety when interacting with the fan on. Some of them have additional blinds that protect the mechanism from dust. Also, the grille makes it easier to install the device.

Such fans are designed to be located on a wall or in a window opening. Often designed to enhance natural airflow.

The main parameter by which axial fans differ, perhaps, is the method of operation. From this point of view, the devices are as follows.

Almost all the above described devices are suitable for this description. That is, fans for appliances, cooling of various rooms or their heating to a temperature not higher than 80 degrees.

Axial devices for industrial use, which can change the direction of rotation of the blades, and hence the direction of air.

Designed to work in conditions where metallic materials are most susceptible to corrosion.Fragments of such fans, as a rule, are made of stainless steel and covered with special protective compounds.

Required to work in conditions with elevated temperatures. So fans are able to withstand heat, reaching 200 degrees.

Designed for installation in duct piping. Explosive gaseous substances are removed through this ventilation.

These fans equip exhaust hoods to remove combustion products. Parts of the device are heat resistant and resistant to corrosion.

Choosing the most suitable axial fan is not easy. It is necessary to take into account the size, volume of distilled air, safety, reliability, price and many other factors. In addition, on the shelves of household appliances today there are many models from different manufacturers. To facilitate the choice of flour, we present you a list of axial fans,which the people of Russia elected the best in 2018.

Its main advantages, according to customer reviews, are compactness and low price. This model is a portable USB fan that can be connected to a computer, laptop or power bank “Power Bank”. This makes the fan indispensable in a hot office or on the road. It consumes a minimum of energy and is designed to blow one person. Metal blades closed protective grille.

A small table fan at an affordable price. Designed to cool one person and technology like a computer. It has two rotation speeds. You can also adjust the inclination of the fan so that the air flow is directed to a certain point.

Representative floor type fans. It stands out among its fellows with an acceptable price. Able to provide cold air to one room. According to the owners, it perfectly replaces costly air conditioning. The model has four speeds. It is controlled both manually and with the help of a special control panel.

Modern portable fan with an interesting design appearance. It can be installed in several positions - on the table, on the floor or suspended.Equipped with a battery, so for some time able to work without connecting to the network. The model has two modes. Economical - low energy consumption and low rotation speed. Maximum - high speed at high power consumption. Also to the pluses include low noise. However, its price is not as affordable as in previous cases.

Axial fan with innovative design. Outwardly, it is slightly reminiscent of traditional fans. The device is characterized by the so-called "column performance". Among the advantages are three modes of operation, protection from children, the rotation function for a uniform blow. Setup is carried out using a digital display or remote control.

Install a simple household fan - is simple. It can be located in any convenient corner of the room, and if necessary it moves easily.

And what about more complex devices like wall or ceiling? Installation of such fans is carried out taking into account special technical standards:

• axial devices should be installed so that maintenance and repair is safe and convenient;
• direct installation should be carried out only after complete assembly and performance check;

• the characteristic of the local power grid must comply with the requirements of this device;
• power must be connected according to the scheme that is attached to this fan;
• device must be grounded.

If the location is a duct, the duct must be equipped with a hatch for electrical connection.

Only qualified professionals can do this work, so do not try to do it yourself. Specialists will carry out the necessary calculations and will be able to connect the fans, as required by the rules and regulations.

General information about axial fans is in the video below.