Dust extraction fan. Silent duct fans: types, features and installation. Prices, characteristics of modern models, recommendations for the right purchase

Dust snail fan BP 100-45 designed to work as part of supply and exhaust ventilation systems, and are also used in systems air heating and air conditioning of residential, public and industrial premises. Due to the special design of the impeller fan VR 100-45 - chip extractor can work with air and non-explosive gas mixtures, the specific dust content of which reaches one kilogram of dust and suspended solids per cubic meter (1kg / m3). Due to this, they are successfully used in systems of general and local exhaust ventilation in production areas where intensive air purification is required. working area: in metal and woodworking shops, on grain crops transportation lines, etc.

Overall dimensions of VR 100-45 fans

Position of fan housing BP 100-45, version 1

dimensions fans BP 100-45, version 1

Overall and connecting dimensions fans VR 100-45 No. 2.5, No. 3.15, No. 4, version 1

Overall dimensions of VR 100-45 fans No. 2.5, No. 3.15, No. 4, version 1

Overall and connecting dimensions of fans BP 100-45 No. 5, No. 6.3, No. 8, version 1

Overall dimensions of fans VR 100-45 No. 5, No. 6.3, No. 8, version 1

Position of fan housing BP 100-45 version 5

Overall dimensions of fans BP 100-45 No. 5, No. 6.3, No. 8 version 5

Overall and connecting dimensions of fans BP 100-45 No. 5, No. 6.3, No. 8, version 5

Overall dimensions of fans VR 100-45 No. 5, No. 6.3, No. 8, version 5

Overall and connecting dimensions of fans BP 100-45 No. 10, version 1

Overall and connecting dimensions of fans BP 100-45 No. 12, version 1

Overall and connecting dimensions of fans BP 100-45 No. 10, version 5

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• By bank transfer for legal entities VAT included.

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• Transport company Business lines or PEK, others by agreement.
• Goods "in stock" can be picked up from the warehouse on the day of enrollment Money to our checking account.
• Delivery is carried out within 1-2 business days from the moment your order is ready.

Delivery across Russia:

• Transport company (TK) Business lines or PEK, others by agreement. Delivery to the terminal TK - FREE OF CHARGE. (3 times a week).
• The cost of delivery of shopping malls depends on the region. Our managers will calculate all the options and offer the most convenient and profitable delivery method for you.
• Our vehicles in the shortest possible time. Shipping costs are calculated based on the volume and weight of the shipment.

Guarantees

• Our company sells exclusively new goods, which are covered by a factory warranty from 12 months to 36 months.

Design features

The layout of the dust fan BP 100-45 is monoblock. The product is delivered to the customer in assembled in factory packaging. Fan BP 100-45 consists of the following structural units.

The frame is a metal welded structure that supports the spiral fan casing and the electric motor. During installation, the fan frame is attached to the foundation, ceiling or other load-bearing base using anchors. To reduce vibration loads and improve noise performance, it is recommended to install the frame on a supporting surface using spring or rubber vibration dampers.

The function of the body is performed by a spiral body-snail chip ejector, which during installation can be rotated at the desired angle to the horizon by an angle from 0 to 315 degrees (with a discrete step of 45 degrees) for more convenient pairing of the outlet pipe with the air duct.

The radial impeller of the BP 100-45 fan, depending on the model, can be equipped with 6 or 8 blades and is placed coaxially with the circular inlet. The outlet has rectangular section and is located perpendicular to the axis of rotation of the impeller. Both spigots are equipped with flanges for interfacing with the air duct (direct connection through a sealing element or with flexible connectors of the appropriate section).

Manufacturing options

Dust fan BP 100-45 produced by the manufacturer in 9 standard sizes. The selection of equipment by performance is carried out on the basis of the purpose and actual operating conditions.

Fans ВР 100-45 have two variants of drive configuration: - direct connection to the impeller hub; - Via V-belt transmission.

Also, radial fans BP 100-45 can be supplied in two versions according to the impeller design:

Execution 1 - the presence of fibrous substances is not allowed in the working environment;
- execution 2 - in the working environment there may be a small amount of fibrous inclusions (it is possible to use the equipment in textile factories, where the working environment contains fibers of viscose, cotton, wool, etc.).

Depending on the purpose, the manufacturer produces radial fans BP 100-45:

General industrial (basic version);
- corrosion-resistant;
- explosion-proof.

Operating conditions

This class ventilation equipment designed for operation in temperate climate (t=-45…+40С), temperate and cold (t=-60…+40С) and tropical (t=-10…+50С).

Location category - 2 and 3. It is allowed to operate radial fans VR 100-45 according to location category 1, provided that the electric motor is protected from direct solar radiation and atmospheric precipitation.

Assumes correct selection equipment. One of the representatives of such equipment is a dust fan, the choice of which is carried out according to strictly defined indicators. The device itself must have a special design in order to work effectively in heavily dusty rooms and be able to move polluted air from large quantity solid particles.

All dust fans are structurally produced of a radial type or, as they are also called, centrifugal. There is no generally accepted classification of such equipment, but they are usually divided according to certain criteria:

• By appointment.
• By the pressure generated.
• By the speed of the generated air flow.

Radial dust fans belong to the class of equipment for special purposes.

Special Purpose Fans

Dust fans for special purposes are devices designed for pumping and transporting non-aggressive air mixtures with a pollution density not higher than 1 kg / m3. These fans are not designed to work with sticky and fibrous materials. They can be used in the temperature range from -40 C to +80 C and are successfully used in aspiration and pneumatic conveying systems for grain crops.

There is also equipment that is designed for pumping explosive gases and high-temperature air-gas mixtures. It is produced in limited quantities to order a specific production, and has a significant cost.

Design features

The dusty centrifugal fan consists of a "spiral" or "volute" type housing, which can be made from several grades of steel, depending on the purpose and conditions of use: galvanized, carbon, or alloyed. Also in the design of the body there are intake pipes, an engine and an impeller made in accordance with the purpose of this device.

There are two mounting options:

• On the motor shaft.
• The electric motor drives the impeller through a belt drive.

In order to prevent solid particles from getting stuck between the body of the device and the impeller, a rather large gap is made between them, therefore, such devices have a lower efficiency than that of general-purpose fans.

Despite the fact that the equipment is used quite often in many industrial enterprises, only three types are commercially available.

• TsP7-40 - has a diskless wheel with six blades. To reduce the level of noise generated by it, the wheel blades are bent forward. Some design features of this device allow you to assemble it for both right and left rotation.
• TsP6-46 - has an impeller, which consists of a disk with 6 blades attached to it. Due to some design features, this type of dust equipment cannot operate at high speeds, so it is considered a low pressure apparatus.
• TsP6-45 - structurally does not differ from the previous model, but has forward-curved blades. Thus, the possibility of a significant reduction in the cost of operating this equipment is achieved.

These devices have significant differences in the pressure generated. Many businesses require the creation high pressure, up to 12 kPa. Devices of such performance are called high-pressure dust fans. For certain operating conditions, impeller blades are produced from wear-resistant and anti-corrosion materials, among which the most commonly used are: titanium and its alloys, vinyl plastic, stainless steel.

The device with a plastic wheel has higher anti-corrosion rates, even than stainless steel, but is much inferior in strength. The main advantage of such devices is their speed. Some models are able to develop peripheral speeds up to 30 m/s.

Scope of application

Dust fans have found the widest application in the field of Agriculture, agricultural sector and industry. Most often, devices are used in industry to remove dust pollution from the air, sawdust and metal chips directly from the working area. Wide application this equipment is found in welding shops when removing smoke and slag. Such devices are used in pneumatic transport installations for moving grain products.

Advice:
When removing abrasive particles, especially in aggressive environments, you should choose a fan with blades exclusively made of wear-resistant and hard alloys.

The problem of removing unpleasant odors is faced by many residents of megacities. It is especially relevant in old houses with natural channels. As part of today's review, we will consider silent duct fans for exhaust hoods, analyze their types and advantages / disadvantages. Along the way, we will deal with those technical characteristics that you should definitely pay attention to, and tell you how to properly install such a fan and, if necessary, repair it. And we end our story with a review best models duct fans.

In the phrase of the title of the subsection, there are two terms that need to be parsed. These are "channel" and "exhaust". With the second, everything is easier. That is, the device must be installed on the exhaust section of the ventilation system. To make it clear what we are talking about, we explain that ventilation works on the principle of removing air masses and the same amount of inflow. One does not exist without the other.

Fans can be installed on or on an exhaust fan. Exhaust models are most often used. Incidentally, these devices are roof fans or centrifugal "snails" installed on the street.

The channel unit is a completely different design. It is cylindrical in shape, inside which a fan is mounted. That is, the device itself can become a continuation of the duct ventilation system or can be installed in the body of the wall, or rather in through hole made in the wall. More often, such models are called air, but no matter how they call it, the essence remains the same - air extraction with a fan.

Why is a silent fan better for a hood?

Now let's see why such fans are called silent. Any equipment that has rotating parts makes certain sounds associated with the formation of vibration. Fans have another reason to make noise - this is the air flow that passes through inner space device.

Attention! According to SNiP 23-03-2003:SN 2.2.4 / 2.1.8.562-96, the noise level inside residential premises should not exceed 35 dB. For comparison, there are several options for noise levels.

It is under the value of 35 dB that the noise level of the operating device is adjusted. This is achieved in several ways:

1. High-precision bearings are installed in the design of the fan, which are devoid of such properties as runout. No beat - no vibration of the motor shaft on which the fan impeller is mounted.
2. Precise balancing of the blades on the impeller creates conditions for the complete absence of vibration of the air flow.
3. Accurate selection of the number of blades, their angle of inclination.
4. Use inside the body of gaskets made of special rubber. In the process of down with operation, it does not burst and does not tear. Gaskets are installed between the fan housing and the legs (brackets) of the electric motor.

All this in a compartment creates conditions for silent operation of devices. Their noise level does not exceed 25 dB. That is why they got their name.

Varieties of duct fans

Basically silent or bathroom are divided into two categories:

• in shape,
• by design.

In the first case, there are two groups: with a round section of the body and with a rectangular one. In the second, these are axial fans, radial and centrifugal. Duct fans for round ducts are most often used in private housing construction. But there is one moment that determines the installation location.

For example, very often the exhaust section of a ventilation system is a vertical pipe (usually plastic or concrete) that permeates the building from the roof. They hide such an air duct in the walls during the construction process or build it in the form of a separate box. You can not install a duct fan in it. Because if the device fails, it will not be possible to repair or replace it. On such an air duct, you can put a roof model. Duct devices are mounted in air ducts that remain outside the building structures. For example, collected in the attic.

As for rectangular units, they can be attributed to the group of industrial exhaust fans. But this does not mean that they are not used in residential housing construction. Rectangular ducts are also used in residential or office buildings. The photo below shows one of the models made of plastic. This is a wall or ceiling type device with a rectangular body. Pay attention to its blades, this is a centrifugal type fan. His blades are located along the direction of air flow.

Axial fans

An axial model or axial model is a device in which the direction of air movement corresponds to the location of the axis of the electric motor. An impeller is mounted on it. It is this design that has received great use in everyday life, because:

• it has a low-power electric motor;
• but this power is sufficient to provide the required air exchange both in living quarters and in office ones;
• simple tube design.

Attention! By themselves, axial fans are the quietest among all models used.

Radial

The principle of operation of these devices differs from the previous ones in that the movement of air masses does not occur along the axis of the motor shaft, but with an inclination depending on the slope of the impeller blades. They can be tilted back or forward. Accordingly, with a forward slope, the fans are installed on the air supply, with a reverse slope on the exhaust.

But the slope affects not only the direction of the flow. There are other features as well:

Exhaust duct fans for the kitchen or bathroom are generally radial models.

Centrifugal

The duct type centrifugal exhaust fan is a novelty that has appeared on the market relatively recently. But she took her place firmly. A distinctive feature of this variety is the impeller with blades that are located longitudinally to the axis and do not have a slope in the longitudinal plane. They have a slope at the transverse plane.

The devices got their name only due to the fact that during the rotation of the impeller, the blades throw air towards the body of the apparatus, where a zone is formed. high blood pressure. And in the center, on the contrary, there is a zone of low pressure. That is, there is a sharp movement of air from the center. It is the pressure difference inside the housing that creates the conditions under which external air begins to be sucked into the unit.

And another one distinguishing feature- This is a special collector that performs the functions of a diffuser. Its design helps to facilitate the suction of air inside the fan.

Design and details of the duct fan

As mentioned above, the design of duct fans is a housing inside which an electric motor is installed. An impeller is attached to the shaft of the latter. The body has a cylindrical shape, but the length of the cylinder can be quite large relative to the diameter or not very large. The first includes models that are mounted on walls. To the second, which are installed in duct systems.

The first are supplied with two decorative ones, which are installed on the surfaces of the walls located on different sides. The latter are attached to the air ducts with special collectors on clamps, which are supplied with the fan. The latter are usually sold assembled.

Some models are equipped with non-return valves that do not release air when non-standard situations move in the opposite direction, that is, into the premises of the building. We must pay tribute to the fact that although the exhaust fan with check valve more expensive, but it protects interior spaces from improper operation of the ventilation system. For example, summer, heat, the fan "passed out" for some reason. If the temperature inside the house is lower than outside, then the air will begin to move in the opposite direction. The check valve will prevent this from happening.

Technical characteristics of duct fans and selection rules

Like all devices of this type, channel ones have one main characteristic: power (performance). More precisely, the volume of air that passes through the device per unit of time. Usually used to measure Cubic Meters passing in one hour - m³ / h.

This indicator depends on two parameters:

• the speed of rotation of the electric motor (impeller), and the higher the speed, the higher the performance;
• the overall dimensions of the fan itself, the larger they are, the greater the power.

In addition, it is necessary when choosing to pay attention to other qualities of the device. Namely:

1. Security class. This refers to protection against dust and moisture. This is especially important if .
2. Functionality. Here it is implied automatic operation device or standard. The second refers to the function when the device starts working when turned on. To the first, when it turns on at certain intervals programmed in the settings.

Fan performance

By eye, this option cannot be selected. Because it will depend on the required air exchange in the room. If the conversation is about general ventilation at home, not a specific room, then you will have to add up the air exchange values ​​\u200b\u200bof all the premises of the house. This will be the performance of the fan.

For example, a house in which the total living area is 100 m², the ceiling height is 3 m. In them, the air exchange will be equal to the volume of the room, that is, 300 m³ / h. Here we must add the air exchange of the toilet and bathroom - 25 m / h each and the kitchen 60 ÷ 90, depending on the type and. It turns out:

300 + 25 + 25 + 70 = 420 m³/h.

This is the performance of the fan.

Geometric dimensions

The marking of fans of this type is based on the diameter of the inlet and outlet. Standard size for this parameter: 100 mm, 125, 160, 200, 250 and 315. Duct fan for exhaust 100 and 125 mm are classified as household. Inline fans 160 and 200 mm are more often installed in restaurants, cafes, shops large area and other institutions. The rest can be attributed to industrial models that are mounted in the air exhaust system of production shops. All of them are powered by 220 V electricity.

For example, let's analyze devices of the VKK brand (round duct fan), the photo and table below show its dimensional parameters.

How to install a duct fan

From the photo shown above, we can conclude that the device itself is selected according to the diameter of the duct. For example, if an exhaust fan with a diameter of 100 mm is installed in the system, then the air duct must also be of this size.

1. So, the installation begins with the disassembly of the device itself. It is necessary to unscrew the clamps and pull out the fan itself.
2. After that, the supply with two branch pipes, which are rigidly connected to each other, and more often they are a single part, is mounted in the air duct. That is, the nozzles are inserted into the two ends of the pipes, between which the fan is installed.
3. The stand or brackets are attached to the wall or ceiling, or to any other flat surface(columns, arches and others), near which passes piping. Fastening is made on dowels and self-tapping screws.
4. The fan is inserted into its place, attached to the nozzles with clamps, under which rubber gaskets are laid.

Attention! The distance from the elbow to the inlet pipe must not be less than one diameter. In the case of silent duct fans 100 mm, this distance should not be less than 10 cm. The distance from the outlet to the outlet or fitting should not be less than three diameters.

How to properly care

If we are talking about devices that are installed in the duct system, then maintenance is rarely carried out, especially if the pumped air is dry and clean. Once every two or three years, you can open it and clean it from dust. If possible, you can try lubricating the bearings. But, as practice shows, this is a matter for professionals.

With regard to wall-mounted fans, once a year it is recommended to remove the decorative grilles and clean the inside of the cylinder. Everything else is not available.

Do-it-yourself duct fan repair

Here's what is never recommended to do - do-it-yourself repairs. Typically, the fan motor or capacitor fails. If the first burned out, then it will have to be replaced with a new one. And it’s not a fact that you will find a motor in the store that matches the brand of the engine.

As for the capacitor, if you understand something in electrics, then you can handle the replacement. To do this, you will have to measure the capacitance of the part with a multimeter. If it corresponds to the passport (indicated on the case) or a little more, then it's not about him. But if the capacity is less, then you have to change. By the way, it is necessary to measure the parameter with the capacitor disconnected from the network with its preliminary discharge (close the two ends with a wire).

But, as practice shows, quality models will serve faithfully for more than a dozen years. And if at one point there was a failure in work, it is better to put a new one instead.

Article

Exhaust fans are one of the most common types of ventilation equipment. They are used in exhaust ventilation systems and are designed to remove exhausted polluted air with a low oxygen content from the premises.

The scope of application of exhaust fans is wide and varied. They are installed in bathrooms and toilets, in kitchens, spray booths, workshops, cafes, greenhouses, etc.

Depending on the design, fans are divided into axial, radial and centrifugal.

By functional purpose All devices can be divided into two large groups:

Household exhaust fans used in apartments, residential buildings and small offices;

And industrial exhaust fans, the price of which is higher than for household ones. This is explained by the increased power, strength and longer working life of these devices. The scope of their application is industrial workshops, hangars, warehouse and utility rooms, etc.

Fans designed for domestic use are increasingly appearing in modern apartments. Fashion for "European-quality repairs" with replacement wooden windows on plastic sealed double-glazed windows violates existing systems ventilation with natural draft and requires the organization of mechanically driven ventilation. Most often, exhaust ventilation is installed in bathrooms, toilets and kitchens. Its purpose is to clean the air from soot, dust, unpleasant odors, oil, grease, excess moisture and other contaminants. Before you buy an exhaust fan for your home, please Special attention on its noise level and dimensions. A useful option would be the presence of a check valve in it. Such designs are especially good for equipping a ventilation system in high-rise building where common exhaust ducts are used for several apartments. The non-return valve is designed to prevent the backflow of air from the ventilation ducts, so its presence will help protect the room from small debris (dust, poplar fluff, etc.) and odors coming from neighboring apartments. For industrial facilities characteristics such as maximum air capacity and maximum total pressure are important. The main task of an exhaust fan designed for mounting on industrial facilities- extract from the production workshops of air containing various industrial pollution, and bringing the content in it harmful substances to safe settings. Air quality requirements are established by relevant regulatory legal acts in the field of labor protection.

Our company provides you with a wide range of ventilation equipment for residential, administrative and industrial facilities. Any exhaust fan that you can buy in our company has official guarantee manufacturer and is of high quality.

You may also be interested in the following types

To provide forced exhaust room air is used different kind fans. They are used when it is necessary to get rid of excessive moisture, unpleasant odors or simply create the right microclimate. Silent duct fans are installed directly into the air duct and are effective for use in the bathroom, toilet or kitchen.

Different models of devices can differ significantly from each other in a number of characteristics. For example, these may be differences in the shape of the case:

1. - mounted in ventilation ducts round shape, are the most common option for use in the kitchen or bathroom.
2. Rectangular duct fans - installed in ventilation shafts with a rectangular or square section. Usually, rectangular shape There are industrial fans, which are characterized by increased power.
3. Square - just like rectangular exhaust axial fans, they are designed for installation in a square air duct shaft and are distinguished by high power. They are also often used for industrial purposes.

Duct devices for extracting air are distinguished by design features.

Axial- have a body in the form of a cylinder, inside of which there is a fan with blades mounted on the axis of an electric motor. With this design, air masses move along the axis of the device, and a special manifold is often installed at the inlet, which improves aerodynamic characteristics device. Of the advantages of axial fans for exhaust hoods, one can single out quite high efficiency– over 100 m³ of air per hour.

In addition, axial models are characterized by ease of installation, which is why they are often installed in the ventilation openings of bathrooms or kitchens. The disadvantages include low pressure characteristics and high level noise - about 30-50 dB.

Radial- have a spiral body, inside of which there is a paddle wheel. When it rotates, the air masses move in the radial direction, the air is compressed under the action of centrifugal force and leaves the housing. The blades of the radial device can be directed back or forward, in the first case, during operation, the savings are up to 20% of electricity, and the noise of the device is significantly reduced. Forward curved blades increase fan power. Radial models are compact in size, so they can be easily installed in almost any duct.

Centrifugal- relatively new model, which has already gained great popularity among users. Centrifugal exhaust fans are well suited for installation in rooms larger than 15 m², they are characterized by high power and almost silent operation. The advantage of a centrifugal fan is that it can be installed not only in front of the air intake, but also in the middle of the ventilation shaft.

Useful advice! If you prefer centrifugal fan, then it is better to install it directly in the ventilation shaft, so its efficiency will be much higher, and condensate and dust will not accumulate on the device.

There are also specialized models such as smoke exhaust and explosion-proof fans. Axial smoke exhaust fans are designed to move air masses in which there is a certain amount of impurities. it a good option not only for industrial premises but also for kitchens where large quantities of food are often prepared. In addition, these models of hoods are characterized by high power and allow you to quickly extract steam and smoke from the room.

The explosion-proof axial fan is intended primarily for the organization of forced air exhaust with combustible or explosive impurities. Such models are rarely used in everyday life, but they are very popular in enterprises where there is an increased risk of fire or work with explosive substances.

What parameters you need to pay attention to before buying a fan for the hood

Before you buy exhaust device, which will ensure the forced movement of air masses in the bathroom, toilet or kitchen, you should pay attention to its following parameters.

Fan performance. This parameter is calculated using a fairly simple formula. To do this, you need to multiply the volume of the room by the frequency of air exchange. The last indicator means the number of air changes per hour. The multiplicity directly depends on the type of room and is 6 for a bathroom used by up to 3 people, 8 for more than three and up to 10 for a toilet.

At the same time, when choosing a silent exhaust fan, always take a product with a slightly overestimated performance. For example, the performance of a device installed in a bathroom should be 95-100 m³ / h.

The amount of noise produced by the device during operation. Any always makes mechanical and aerodynamic noise. The first is the noise from the operation of the electric motor, created by its vibration, which is transmitted to the air duct, the second is the noise from the movement of air masses. Silent duct fans are models whose operation noise does not exceed 25 dB. An indicator exceeding the threshold of 35 dB is already noticeably annoying, so you should not install a device with such characteristics in a residential area.

A silent duct fan can be made even quieter if a special muffler is installed right behind the case, and the ventilation shaft is finished with a material with high soundproofing characteristics.

Design safety. This refers to the level of protection against moisture and dust. This is especially true if you purchase a duct fan for a rectangular duct to the bathroom or kitchen, where high humidity. Moisture inside the case can cause a short circuit, so it is better to immediately purchase models with water protection. In addition, an additional protection can be the purchase of a device that operates at a low voltage of 24 V.

Extractor functionality. This refers to the fan operation mode - automatic or standard. Standard axial supply fans turn on at the same time as the lights in the room turn on and are well suited for rooms that do not have too high humidity levels. Otherwise, the device simply will not cope with the air extraction. The automatic hood is equipped with a timer that turns the appliance on and off.

In addition, the automatic fan design can include a humidity sensor, which is very convenient for the bathroom. The price of an axial extractor fan will be higher than a standard one, however, such improvements will allow you to more effectively and quickly get rid of excess moisture in the room.

Device quality. If you need a really high-quality exhaust fan, then you should pay attention to ensure that it meets international standards. For example, the minimum acceptable protection class of the device is IP 34.

When choosing a hood device, give preference to models that have already proven themselves in the market and are popular among buyers.

Choosing a kitchen hood fan

The appliance installed in the kitchen is somewhat different in its characteristics from the fan, which is suitable for installation in the bathroom. The main difference is that the kitchen is the source of odors. Therefore, if you do not want smells from a neighbor's apartment to enter the kitchen, it is recommended to install a model with a check valve. This design will not allow air to enter the room when the hood is turned off.

Also, when buying an exhaust fan for the kitchen, pay attention to the fact that it can withstand exposure to high temperatures and high humidity. This is especially true if you mount the device in close proximity to cooker. Control kitchen hood can be done with the remote control remote control, a special cord, and it is also possible to turn on simultaneously with lighting. It is most convenient to choose the remote option. You can also purchase a model with a built-in presence sensor that will be triggered when you enter the room.

Related article:

Types and features. Selection options, types of industrial models. Installation features. Overview of popular manufacturers.

Instead of a duct supply and exhaust axial fan for the kitchen, such a type of hood as a window hood can also be used. Household window exhaust fan differs from other models in that it is built into the window structure or even cut directly into the glass. The disadvantage of this option is drafts in the room, if its design does not provide for a check valve. Today, window fans are not very popular, giving way to more convenient duct models.

The price of silent duct fans 100 mm and other models

The cost of an air extractor depends on many factors, such as its size, power, performance, material from which the housing is made. Thus, devices in a steel case are several times more expensive than those in a plastic case. On average, the price of a household fan in a plastic housing for extractor hoods in a bathroom, kitchen or toilet starts at 1,000 rubles. More complex models designed for operation at high and low temperatures, high pressure and others extreme conditions, can cost 2000-3000 rubles and more.

Exhaust fans with non-return valve and others additional features also cost more than standard models.

Installing a Silent Household Exhaust Fan

Before proceeding with the installation of the device, it is imperative to check the operability of the ventilation system in the room. To do this, you need to bring a lit match to the vent or attach a sheet of paper. In the first case, the flame should deviate towards the hood, and in the second case, the sheet should be held on the hole due to the air flow. If this does not happen, then you definitely need an exhaust fan, since the air will not be removed from the room naturally.

After that, you should decide on the place where the axial fan for exhaust ventilation or another model will be installed. It is best to mount the device under the ceiling, as hot and humid air always rises.

Useful advice! Choosing the type of fan is also based on the installation location. Not every model is suitable for installation, for example, in horizontal position or at an angle.

When installing the device, the following points should be taken into account:

• it is best to proceed with the installation of the fan in the process of repair;
• the wiring that goes from the power source to the hood should be hidden in a special box or even carried out under plaster;
• if we are talking about a fan in the toilet, then it is most convenient to connect it directly to the light switch;
• if you want to reduce the level of vibrations, as well as protect the supply and exhaust fan from external influences, then you can mount the device in plastic pipe, pre-fixed in vent with cement, polyurethane foam or building sealant;

• in the toilet, the greatest efficiency of the fan will be ensured if it is installed under the ceiling directly above the toilet;
• For an error-free connection of the device to the mains, you must first read the instructions attached to it.

Connecting an axial supply and exhaust fan is extremely simple:

1. The protective cover is removed from the body of the device.
2. A special adhesive mixture is applied to the fan.
3. The device is installed in the place prepared for it, tightly pressed for several minutes.
4. The protective cover is screwed into place.

Remember that the device must fit as closely as possible to the walls of the duct, otherwise, during operation, it will beat against them, which will lead not only to elevated level noise, but also to premature failure of the device and the need for repair or replacement.

It is also very important to choose a model that will fit as closely as possible in size to the diameter. ventilation duct. For example, if it is 10 cm, then you will need a 100 mm duct fan model.

Silent duct fans: care features

In order for the hood to last as long as possible, it is necessary to observe certain rules operation and regularly carry out preventive inspection and cleaning of the device. Most often it is necessary to clean from dust and dirt ventilation grill and fan blades. In addition, when installing a silent duct fan 125 mm or another model, it is necessary to check the air duct for tightness of the joints. It is in the cracks that dirt most often accumulates, fatty deposits form, and bacteria, fungus and mold multiply.

Blockages in the duct can be removed mechanically or chemically. In the first case, special brushes or just pieces of cloth are used, in the second - cleaning products. In especially neglected cases, it is recommended to remove the fan, completely disassemble it, thoroughly cleaning all parts. Also for more efficient and reliable operation filters should be changed regularly, if this is possible by design. It doesn't matter if it's about axial fan BO 06 300 or another model, systematic cleaning is necessary in any case.

Useful advice! To reduce the need for major cleaning of the instrument, set fine mesh to the air inlet. So, you will protect the fan blades from getting dust and dirt particles on them.

The organization of the forced movement of air masses from the room is very important if there is high humidity in the room or there are unpleasant odors. It is strongly recommended to install a duct fan in the bathroom, toilet and kitchen. The type of device is selected based on a number of characteristics discussed above.