In rooms with high humidity, there is a high risk of steam condensing on ceilings and walls, resulting in mold and fungus, which has an extremely negative effect on human he alth. Properly equipped forced exhaust in the bathroom will avoid these problems. A quality design should provide at least 25 cubic meters of fresh air per hour for a separate room and from 50 cubic meters for a combined bathroom.
Description
Modern forced hoods in the bathroom are divided into two varieties: simple and automatic action. Between themselves, they differ in design, the presence of additional functionality, price. Simple equipment consists of an electric fan (built-in or remote) and a plastic case.
The most popular way to activate is with the light switch in the bathroom. This approach allows air to circulate while the user is in the room. The automatic version is equipped with electronics thateffectively controls the operation of the unit.
Features
Forced hoods in the bathroom are equipped with the following additional options:
- on/off timer;
- moisture indicators;
- color backlit.
The fan is activated if the humidity level exceeds the allowable value, bringing it to normal, and then turns off. Automatic modifications with an adjustable diffuser are suitable for use in private homes, where the ventilation system aggregates with atmospheric air. Some models are equipped with a check valve that allows air to flow in one direction. This design is relevant for residents of high-rise apartment buildings, it allows you to protect yourself from the smells of the neighbors' bathroom.
Usually, the exhaust air from the bathroom is removed mechanically using special devices. For this purpose, an overhead or duct type fan is used. After switching on, it creates traction, which contributes to the removal of polluted air. In private dwellings, channels are being equipped that divert the waste stream through the attic.
Model Overview
There are two types of equipment for forced exhaust into the bathroom: fans of axial and centrifugal (radial) type. The design of the first device includes a shaft with a classic impeller mounted on it. The blades of the last element are made at a certain angle. Rotating, the shaft tightens the air flow. Such a mechanism is appropriate ifthe pressure generated is enough to ensure normal air exchange.
In centrifugal analogues, the flow enters the central part, after which it is fed into the casing with blades, where it is discharged, pushing towards the edges of the casing, then it is discharged through a special pipe into the output channel. Of the devices under consideration, the most popular are overhead modifications, the operation of which is more efficient and quieter than that of axial counterparts. Centrifugal devices with additional functionality can operate in automatic mode.
Safety
A fan for forced exhaust in the bathroom should be as adapted as possible to work in conditions of high humidity. The body of the device powered by electricity must be securely sealed. The internal "filling" is necessarily protected from steam from all sides.
The devices in question must comply with specific standards developed by the International Electrotechnical Commission (IP). This parameter consists of a pair of digits, the first of which has a value from 0 to 6, indicating the level of protection against possible ingress of foreign matter. The second number indicates the degree of moisture protection. In our case, the indicator must be at least four.
Performance requirements
The power and performance of the forced exhaust in the bathroom are closely related. The larger the first parameter, the higher the second characteristic will be. It is not difficult to calculate the required indicator: it is necessarymultiply the footage of the room by the number of people living. If the unit is equipped with a variety of options, its power parameter should not exceed the calculated value by more than 10%. The most popular are economical and silent options, the consumption of which is 7-20 W.
A higher power rating creates a draft, preventing the room from warming up properly. The second main parameter is the noise created during the operation of the blades. It is significantly lower than the functioning of a kitchen hood. The normal parameter is a sound no higher than 30 dB, since a higher level is uncomfortable for human hearing.
Optional equipment
Forced hood for the bathroom and toilet in the standard version is mechanically controlled or runs continuously at low speed. The built-in timer makes it possible to partially automate the process. Thanks to this option, after a person leaves the room, the fan works for a while, and then turns off by itself.
The humidity sensor is very relevant for installation in the bathroom. The hygrometer allows you to set the humidity limits from 40 to 100%. Depending on the last parameter, the fan will automatically turn on or off. If this appliance is available, it is not practical to set the timer.
Arrangement of the ventilation system in a country house begins with measuring the holes in the bathroom to determine the diameter of the duct. In the standard version, the dimensions of the hoodare 10-13 centimeters. To increase the nest, use a perforator.
The check valve is a small and simple device that prevents the flow of unpleasant odors from adjacent neighboring bathrooms. Its operation is relevant in urban baths connected to a common ventilation duct.
How to choose a forced exhaust fan in the bathroom?
When equipping the ventilation system, you should decide on the type of exhaust device. To begin with, it is necessary to take into account the capabilities of the unit, expressed in the amount of air driven. In many ways, this parameter depends on the diameter of the device. In the standard version, manufacturers offer pipes with a cross section of 80 to 150 mm.
Appearance is an equally important factor when choosing. Some manufacturers produce modifications with a replaceable outer panel, others combine them with different colors and shades. Alternatively, an original and beautiful ventilation element can be made one of the accents of the overall interior of the room.
When choosing a forced exhaust in a bathroom with batteries or with an electrical connection, you need to consider that the fan operates in conditions of high humidity. Therefore, all parts must be reliably protected from liquids and vapors, and must also comply with accepted standards. The next factor is noise. Since the fan is expected to operate for a long time, this parameter should be selected with the lowest possible value.
Selection of working scheme
Before installing forced exhaust in the bathroom, you must decide on the connection diagram. Ways:
- The switch is located on the instrument case. Activation and deactivation is carried out by a key or a lanyard.
- Connecting the unit to an individual switch. A controller is mounted in front of the room, in which one key turns on the light, the second button - ventilation.
- Automatic propeller activation from motion or humidity indicator. The device starts to work when the permissible value of humidity is exceeded or there is movement in the room.
- Connecting the system to the light switch. This design can be equipped with a timer, activated and turned off simultaneously with lighting.
The last option is not very economical, as the system will turn on every time a person comes in to wash their hands or brush their teeth.
How to connect a forced draft in the bathroom?
Before carrying out this operation, you must carefully study the instructions that came with the device. The standard installation process includes several steps:
- The front cover is removed, an adhesive composition (liquid nails or silicone) is applied to all points of contact with the wall surface. These tools guarantee a secure fastening of a lightweight plastic product.
- The unit is placed in the prepared hole so that the working part and the engine are completely inside the wall. For a few minutes the design is tightpress and hold.
- Install a mosquito net to protect the premises from mosquitoes and other insects.
- The front cover is fixed with self-tapping screws, which are supplied as standard.
Connection to the power supply must not be made with bare wires. They are placed in the recesses of the ventilation ducts, protected by a corrugated casing. Some consumers connect the fan through a contact pair to a lighting switch that is mounted on a phase. To facilitate the operation of the device, in the future it is allowed to install a separate key for the operation of the system.
Finally
Forced-type hoods for baths and toilets make it possible to eliminate high humidity in the bathroom, as well as remove odors that enter the room. Inexpensive and effective equipment is produced by well-known and emerging brands. Installation work does not require special skills and a lot of time, while the device will become an indispensable assistant in the struggle for a comfortable home microclimate. In addition, mold and harmful fungus do not form on the walls and in the corners of the room.
