Smoke fans: features of application

Smoke fans are devices that are widely used to create ventilation systems. In addition, they are used in general exchange ventilation systems, additionally equipped with a frequency converter that allows to regulate the fan speed. The use of devices allows to ensure the rooms in a normal state of air, without resorting to the installation of additional devices.

Smoke fans are controlled by means of special shields. So, from the device of fire automatics there is a signal to the control panel, which makes the inclusion of the air exchange system.

In accordance with the location of the fans, several types of equipment are distinguished. Conventional devices are mounted on a specially prepared foundation, and with their fastening a special frame construction is used.

Roof fans are mounted on the roof, and the duct fans work directly on the duct.

The body of devices can be made in different ways. They are made of spiral, rectangular, square and round shapes.

Especially popular are roof models. Compared to other types of devices, these fans have many advantages. Their installation is carried out on the roof, which is usually little used. Such installation allows to refuse from use in the building of additional premises, which sometimes occupy only for placement of air exchange systems. Thus, the usable area of the premises is saved, which is relevant for modern office buildings.

The roof ventilator is installed in the mines - this avoids the laying of vertical paths. When using the device, there is no need for additional devices for the removal of combustion products, since air is released directly from the fans into the environment.

Devices are also subdivided according to the specific conditions of work. There are models that are designed for use at temperatures up to 400 C degrees, and also from 400 to 600. In the first case, the impeller of the mechanism is made of carbon steel, in the second case it is made of heat-resistant materials.

Smoke fans with vertical discharge have a low level of energy consumption. Their design allows you to install on the roof in the immediate vicinity of several devices. The system does not require the installation of a non- return valve and has a protection against precipitation.

Horizontal smoke fans are mounted on the roof, which has a non-combustible coating. When installing the system it is recommended to ensure smoke emission at a height of at least 2 meters from the roof level.

For the manufacture of fan casings, galvanized steel is used, which can reliably work with air masses heated to high temperatures. The engines of the roofing equipment are placed in special capsules having separate vent valves, which makes it possible to protect the mechanism from moisture ingress.