In any residential room, the air exchange is especially valued. To solve such problems, use a fan for exhaust. The need to use additional funds is explained by the fact that various negative circumstances often impede the natural movement of air. This is about:
- high humidity;
- small rooms (where there is often no windows);
- inefficient systems where walls and other surfaces are covered by condensate.
Exhaust kitchen fans helps to get rid of the used air masses, creating a forced air exchange.
In order for such devices to work with maximum efficiency, preliminary calculations should be made. Otherwise, the owner of housing risks to face problems:
Channel Fan for Hood
- If the kitchen exhaust assembly has more productivity, there are excessive heavy air flows. Air becomes discharged, drafts appear. It is unacceptable for bathrooms, where superfluous "freshness" is dangerous to health people.
- When the device is too weak, then its functioning cannot change anything (the air will continue to be "standing" in the room).
What are the exhaust fans?
The modern market offers consumers a large line of exhaust technology. Such extractors are designed for kitchens and bathrooms. We can talk about the following types of equipment:
Axial fan for exhaust
- Channel. This technique is mounted in the space of the air pipe itself. There are exhaust fans for the kitchen designed for installation in round and ventilation channels of the rectangular cross section. Some channel devices are complemented by systems controlling the level of humidity. The shutdown sensors attached to them save technical resources. Channel fans are protected from the moisture of the housing, allowing to operate such devices in wet environments.
- Silent. Such extractor fans attract almost a complete lack of noise during operation. Such characteristics are important in cases where the forced ventilation systems are mounted in a dwelling with a small cubage (for example, in one-room apartments).
- Household. Such versions are installed in the premises, in order for the exhaust air to be returned. Such air circulation is needed for kitchens and bathrooms. In modern buildings, many residents of apartment buildings often establish ventilation systems that are crashed into the space of the central highway. The mine is losing tightness, and the mass of exhaust air with pollution and impurities penetrate the neighboring apartments. There will be additional fans running in tandem with check valves in automatic mode.
- Centrifugal. Before choosing the desired system, it is useful to know that such complexes are mounted for maintenance of industrial facilities, since these systems can not always be raised at home. Their spiralized corps are like snails. The configuration of the blades, their dimensions determine the speed (productive) characteristics of the complex.
- Axial. The most common type of product. Such popularity is explained by the presence of the most effective factors. The kitchen exhaust fan is easily mounted, and control does not represent much difficulty. Due to high performance, such systems are able to serve the premises of various areas.
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About fan selection nuances
The fan for the kitchen is set to enhance the existing exhaust systems. Sometimes the device itself can be replaced. The devices are mounted next to the ventilation channel or fixed either at the inputs or inside the air duct device. Instruments operating from the electrical network in the bathrooms function in moisture-proof cases with aggregates not more powerful than 36 V.
Ensuring a sufficient level of security in rooms with high humidity is achieved by compliance with the restrictions that should be taken into account in the process of selecting a suitable exhaust system.
Multipling the volume of the room on the multiplicity of air exchange per hour, you will receive the required power
Its productivity for the kitchen is calculated by the following way. The nominal daridity of the air exchange defined for this room by SNiP is multiplied by the cabin of the room in which the kitchen exhaust fan is supposed to be installed. The product and will be the calculated value of performance.
Calculation is advisable to produce with a reserve, since the configuration of the room can transform. The number of people in the room can change. The calculated power is compared with the available standards. The final choice should be stopped at large values. According to a similar principle, the values of permissible noise effects are determined.
Installation of a channel fan
Installation Tips
In order for the connected exhaust system to work optimally, it is required to comply with certain safety regulations during the selection and location of the fan node:
- Regardless of how the fan is mounted, it should be placed at sufficient height. In this case, the local points of the possible air flow must be at the maximum distance. Such a location ensures that the air indoors will be circulated in the best possible way.
- It is strictly forbidden to install the kitchen fan where the surrounding air warms up above 40-60º C (for example, above the kitchen stoves or fireplace gratings).
- If the fans are mounted in the rooms where the open-flame devices function (or there are plates in which there are no adjustable chimneys), then it is necessary to ensure sufficient air intake.
- Electrical fan installed in the bathrooms should be located at an impressive distance from those places where water procedures are accepted.
- Shower boards need to be equipped with exceptionally low-voltage fans or devices built into ducts.
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Since the voltage in the network can fluctuate, the electronic components of the control units may be premature. Therefore, if the indoors use fluorescent lamps on / off indicators that can cause voltage jumps, then the fans for exhaust are connected via network filters.
Independent installation of fans
If there is a desire to save money to significantly, it is possible to mount the exhaust fan with your own hands. In particular, it makes sense when a small modernization of the already operating ventilation complex is required.
There are options when the round fan is installed in a rectangular mine. In this case, you need to use the adapter, which is fixed by dowels or polymer glue.
You can summarize: household exhaust fans are most popular, in which the blades element is fixed on the axis of the electric motor. Units can be turned on manually through the built-in timer. There are options when the chain includes an additional device with a fuse. For the steady operation of the fans, they are mounted in places of the most convenient air intake.