When there is an unpleasant smell in the house, there is nothing to talk about coziness and comfort. Air fresheners will help prevent the situation, but often the problem is that the ventilation system does not work well in the room. In this case, in places of accumulation of unpleasant odors, exhaust electric fans are installed.
Timely ventilation helps prevent the formation of mold and the spread of stench throughout the apartment. Especially the device is useful to owners of rooms who smoke in the toilet and do not want the smell from smoked cigarettes to spread throughout the room.
Brief description of exhaust fan
The device is a small object, which, due to the fast torsion of the blades, distills the air through the channels of the ventilation system. However, it does not interfere with the natural air exchange process, if it does not have a check valve.
Destination
The electric fan for the hood plays an important role in places where excess moisture, smoke or odor has accumulated. Adverse factors contribute to the formation of mold in the bathroom or the appearance of soot on the ceiling.
To eliminate such problems, it is necessary to quickly and timely restore the air content to normal. It is then that the exhaust fan allows you to solve this issue.
Installation location
In houses and apartments, the methods of driving indoor air are different. The complexity of the exhaust system directly affects the location of the fan. They can be located:
- on the wall;
- on the ceiling;
- in the channel.
Wall and ceiling fans (or laid on) are mounted directly. It is attached to the base of the ventilation shaft, which passes through a wall or ceiling barrier. There is also a mixed version, when the hood works through the wall and ceiling at the same time.
Duct electric fans are mounted in the ventilation pipe, and not at its base. Such a device can expel air simultaneously from several rooms, for example, from a bathroom and toilet.
Less one - inconvenient service. Access to them is usually closed, because the ventilation pipe passes behind the walls or ceiling of the room.
Types of fans
The direction of movement of the captured air and the speed of its capture depend on the shape of the blades and the electric fan itself. Axial and centrifugal models are used to extract the bathroom.
The first group is products where there is an axis and rotating blades on it. The motor is located behind this system. The fan is installed in bathrooms or in toilets with a small area. With low performance, low noise and reasonable price, this product is considered the most popular of all presented in the store.
Centrifugal reminiscent of a spinning drum with blades on its sides. Fast torsion picks up air and drives it into the ventilation duct. Such devices are recommended for installation in large rooms and in industry.
To save energy, installation space and less noise, models with backward curved blades should be chosen. Such electric fans can create a lot of noise created inside the pipe.
How to choose an exhaust fan?
A wide range of such products makes you think about a future purchase. The cost of the product also depends on the appearance, technical characteristics.
Wanting to buy high-quality goods, a consumer can greatly overpay and install a powerful and expensive fan, although a model would be easier and cheaper for his home. What is worth paying attention to?
External signs
The exhaust fan may have a different shape and color of the grille, which in no way affect the technical characteristics. The case must be made of plastic. The product is assigned a certain class of protection against moisture (preferably at least IP 24).
Air exchange method
This characteristic is usually called the performance of the device, that is, the amount of removed air per hour. Measured in cubic meters.
The larger the serviced room, the higher should be the air exchange. For bathtubs and toilets of ordinary apartments, it is enough to install a fan with a capacity of 100 to 120 cubic meters. m / hour.
Noise level
The electric fan can operate both at night and in the daytime. If the device will be used from 11 pm to 7 am, models up to 30 dBA should be selected. For the rest of the time, all devices suitable for maximum noise level up to 55 dBA are suitable in residential premises.
Mounting type
Wall fans are considered easy to install. They emit less noise and are installed in the hole in the duct, and not inside it.
Device power
Before choosing, think about whether the exhaust fan will work for a long time? If the answer is no, therefore, the power must be selected insignificant for this device. A long period of operation of a low-power device can lead to its rapid breakdown.
Check valve availability
Installed on some types of fans. In the off state, it prevents other unpleasant odors from entering neighboring rooms through the ventilation pipe. There is a minus check valve - the lack of natural ventilation. In this case, the device should work continuously.
Way of inclusion
Fans can turn on:
- automatically when you press the electric light button;
- manually using a switch;
- using a motion or humidity sensor.
Automatic devices can save energy if you turn off the light in time and prevent high humidity in the bathroom.
Installation and connection of an exhaust fan
In the process of repair or after it, before installation, it is necessary to think over the system of electrical connection of the device. The wires can be stretched before laying the tiles inside the channel or let them out through the fan.
Before installation, it is necessary to de-energize the house or apartment in order to avoid electric shock. Then carry out the following steps:
- Remove the back panel of the device and run the wires through it.
- Fasten the wires to the device terminals. White - is attached to the terminal marked L, and blue - white (zero) - to N.
- Fix the front part of the fan and check its operation.
- If the device is working properly, proceed to fasten it.
Reference! Installing a fan to a ceramic tile is problematic due to the laboriousness of making holes for fixing bolts. Most often, this method of attachment is replaced by conventional bonding of the side parts of the fan and duct walls.
Do-it-yourself fan
To save money and not waste time searching for the necessary device, some owners try to make an exhaust device themselves.
Tools and materials for work:
- a computer cooler with a power of 12 V, a width of 120 mm;
- plastic sheet;
- charger from a cell phone;
- hacksaw;
- switch;
- screwdriver;
- marker and tape measure.
Attention! Such a ventilation system is designed for small areas, such as a bathroom, toilet, basement or utility room.
Step-by-step instruction
The installation of such a device is best done before laying the tiles. The sheet of plastic on which the cooler will be mounted must be hidden in the wall under the tiles or plastic panels. Work must be done as follows:
- Take the cooler and attach it to the sheet. Circle it along the contour.
- Cut a hole with a hacksaw. Trim the edges of the sheet at a distance sufficient to secure it to the wall.
- Screw the cooler to the hole cut out.
- Connect the power supply to the switch and cooler.
- Check the operation of the device.
- Fix the invention on the wall with screws and screws.
Important! If the switch does not need wires, you can connect directly. The device is also being improved, new parts are added. It should be remembered that the cooler has low power.
Conclusion
Thus, the reader is provided with complete information about exhaust fans, their types, features and characteristics. This material will allow you to quickly select the necessary product or create a device yourself.
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