Kitchen fan as an addition to the ventilation system of the room

Often, the natural exhaust in the kitchens of our apartments cannot cope with the removal of polluted air. Then various devices and devices come to the aid of our ventilation system, among which the kitchen exhaust fan stands out for its simplicity of design and low cost. It is this representative of climate technology that will be discussed in this article. [contents]

Appointment and use of fans for the kitchen

As we noted earlier, the kitchen fan is intended as an addition to the natural ventilation system of our apartments. The main advantages of installing such a climate device:

• Good efficiency at a minimum cost of the device.
• Protection against the common phenomenon of «back draft».
• Durability and low noise level, especially when compared to a hood.
• Profitability.
• Depending on the place of installation and model of the device, it is possible to organize both exhaust and air supply.

Features and device

All kitchen fans consist of an electric motor with a supply voltage of 220 V or 12 V, an impeller, a housing with a mounting system. Modern devices are often equipped with motion sensors to save energy and check valves. Depending on the type of rotor, all kitchen fans are classified into:

1. Axial. Household exhaust devices with this type of rotor are most common for use in apartments and private houses of our compatriots. Axial, such fans are called as the flow of air masses moves along the axis of rotation of the blades.
2. Centrifugal. These devices got their name due to the special shape of the blades. Units with this type of impeller are usually larger than axial units and are used to remove air from large kitchens in catering establishments.

There are also diametric devices, but due to the special shape of the rotor, such devices are most often used to remove air from bakeries, hot shops, etc.

Classification of devices according to the method of installation

According to the installation method, all exhaust devices can be classified as:

• Wall-mounted exhaust fan that can be installed on an exhaust vent or on an external wall.
• Window, which is most often mounted in the opening of the window.
• Ceiling, designed for installation on concrete, wooden floors, suspended and false ceilings.

Almost all devices are equipped with a dimer or a stepped blade speed controller.

Ceiling exhaust fans are most often of the reversible type and can lift air masses up to the ceiling or lower polluted air down, for example, to be captured by a kitchen umbrella.

Today, owners of private houses are increasingly equipping their exhaust system with duct fans, which are mounted directly into the air duct of the exhaust system. Such devices are invisible to the eye, have a low noise level and sufficient efficiency. http://www.youtube.com/watch?v=swagl1tOU2E

Basic selection rules

When choosing a kitchen fan, several important factors should be taken into account, thanks to which the purchase of such a device will be justified and not financially burdensome:

1. Installation method. Initially, decide where you plan to mount this device.
2. Performance. The required performance can be calculated by multiplying the volume of the kitchen by 8. The resulting figure will be the fan performance required for your particular kitchen.
3. Noise level. In order not to be in a constant noise environment, choose a device with a noise level of no more than 40 dB.
4. Safety. Working in the kitchen is associated with the release of a large amount of heat into the air, so choose a device that can function effectively at a temperature of 50-70 ° C.
5. Design features. Before buying, pay attention to the coating of the blades. The best option would be to coat the impeller with a polymer composition that resists corrosion. In addition, it is easy to remove fat deposits that are in the air of your kitchen from such a coating.
6. Additional functions. Now most domestic exhaust systems are equipped with lighting, presence sensors, speed controllers, and other functions. Decide for yourself how much and which ones you need, since any addition significantly increases the cost of the device. Useful features include adjusting the speed and direction of rotation of the blades.

A reversible household fan, if it is supposed to be installed on a wall or window, is a very useful thing: it can organize not only the extraction of air masses from your kitchen, but also provide your home with fresh air, without which normal operation of the natural ventilation system is impossible.