Is it possible to bring the hood to the ventilation duct. How to connect the hood in the kitchen to ventilation: a work guide. Is it possible to remove the fume hood into the ventilation duct

During cooking, various odors are present in the surrounding air, liquids evaporate and grease splashes. Harm from carbon monoxide and other contaminants can be reduced many times with the help of high-quality hoods.

In the lower part of the housing there is a strong filter that retains dirt and soot.
Inside the device are fans that are driven by a motor.
Further, an air duct is attached to the upper part, leading to the street or to the ventilation shaft of the house.
In various models of hoods, additional devices are provided for better cleaning, for example, grease traps.

Grease filters are designed to capture fatty suspended particles from the air. They are divided into reusable and disposable. The latter cannot be washed, after use they must be disposed of.

Reusable metal ones require only regular cleaning, they will last as long as the unit itself.

Carbon filters are used in products where air exchange is provided: air is first drawn into the device, and after cleaning it is sent back to the room. The composition is based Activated carbon which absorbs odors well.

The performance of the appliance is calculated by the following formula: the width of the kitchen is multiplied by the length and height of the ceiling, then another ten. The last figure is the rate of air exchange per hour.

The higher the power of the product, the faster the atmosphere in the kitchen will be refreshed, the more comfortable it will be for you to cook. The minimum productivity of industrial products is 300 cubic meters per hour.

It is important to properly connect the appliance to the ventilation shaft and to electrical network. The unit itself should be located at a height of 70-90 centimeters from hob.

In order to avoid melting of the device, it is impossible to mount it below the established limits; when installed above 90 centimeters from the stove, the effectiveness of the product is significantly reduced.

The exhaust hole and the installation site of the device are connected by a corrugation in the case when this pipe can be hidden in the kitchen set. When the exhaust duct is on outside, it is better to use special channel pipes with a rectangular cross section.

You can bring the device into the opening of the ventilation shaft, which is available in every house. If this is not possible, then an additional hole is made in the wall with direct access to the street.

How to choose a hood for the kitchen

Pay attention to the following criteria when choosing:

Aesthetic indicators. How will the new technology fit into your interior.
Instrument dimensions. Take measurements before buying.
Product form.
Power. Choose performance depending on the area of \u200b\u200bspace.
The principle of operation of the unit.

Before buying, pay attention to the following parameters:

Equipment. Grease filters in the kit must be provided by the manufacturer.
Performance. You must understand how much power you need for this unit in order for it to work efficiently.
Noiselessness. Not all models are quiet. 40 decibels is optimal parameter, the sound will be quiet.
Options. Do not buy a product without first measuring the space where you plan to mount it.

The color of the product is not important if it is masked by the kitchen panel.
Manufacturer. If everything satisfies you important parameters, then it is not worth overpaying for the brand.
Type of connection with an exhaust port. Choose corrugation or square pipes, you can make a move even from drywall.
Additional lighting. Manufacturers offer devices with built-in bulbs to illuminate the hob, but usually they give little light.
Remote Control. Ability to control power remotely.
Sleep timer.
Switch panel type.

Products of the recirculation type differ from flow-through ones in that they do not have an outlet pipe for venting polluted air into the ventilation shaft.

In this type of device, the air is cleaned inside under the action of a two-level filtration system, then it is released back.

Characteristics

There is no air duct.
Compact design.
Several modes of operation with the possibility of adjustment.

pros

Unlike a flow system, a stationary system will continue to operate regardless of environmental influences.
Ease of construction. No additional fasteners needed. It looks elegant and does not clutter up the space.
Ease of installation. Several fasteners and outlet to the network without additional laying of air ducts.
Grease filters are easy to clean and change. They can be washed in
Low cost compared to flow models.

Minuses

Often have to change carbon filters. You can’t wash them, you need to throw away the used material and buy a new one.
Small selection of models.
These units are more suitable for kitchens with large area because they take up a lot of space.

The most reliable option in its category is the Bosch DHU646 U.

Bosch DHU646 U

Cata Ceres 600 Negra is functional, has three speeds and touch control.

Cata Ceres 600 Negra

Pyramida MN20-60 – great option for not large kitchens up to 9 square meters.

Pyramida MN20-60

The product is fully integrated into the kitchen set.

Characteristics

Additional sliding panel.
The body length varies from 45 to 90 centimeters.
Possibility of flowing air exhaust or recirculation.
Mechanical and electrical models.
High performance.

pros

Space saving.
Retractable panel increases air intake area.
Compact and ergonomic design.
Ease of installation.
Aesthetic beauty.

Minuses

The space for the duct in the cabinets is not suitable for storing other things, since the pipe takes up a lot of space in the headset.

Electrolux egf 50250S is easy to use and is the best in its category.

Electrolux egf 50250S

Zanussi ZHP 615 X is easy to use, adjustable with a mechanical slider.

Zanussi ZHP 615 X

Elica eliblok 9 LX is equipped with two engines of maximum performance.

Elica eliblok 9 LX

The inclined model is different spectacular design, glossy surface fits best in modern headsets.

Characteristics

Touch or button control.
An automatic shutdown timer is provided.
Additional lighting included.
Glass front panel.

pros

Large air intake area.
Wide functionality.
Appears above the work area more space when cooking, thanks to the inclined plane.

Minuses

High price
Requires regular wet cleaning as the glossy surface gets dirty quickly.

Eleyus Lana 700 60 Bkl. Air extraction and recirculation, three speeds, low level noise.

Eleyus Lana 700 60 Bkl

Krona Irida 600 has electronic control, equipped with the functions of exhaust and air circulation.

Krona Irida 600

Faber Cocktail XS BK A 55 is equipped with touch controls and meets all the declared characteristics. low noise and maximum efficiency are the main advantages of this model.

Faber Cocktail XS BK A 55

All are expelled through the duct. harmful impurities, with good traction, you can do without a filter, but in the event of a reverse stroke, all the dirt will return to the surrounding atmosphere.

Characteristics

Filters are used fat and coal.
Standard body parameters.

pros

Clean air is recirculated.
Work efficiency is greatly improved.
Spare parts are readily available.
Ease of access to the necessary elements.

Minuses

Regular replacement of carbon filters.
Grease trapping elements are cleaned and washed as they get dirty.

Bosch DFS 067K50 - built-in model of the best quality.

Bosch DFS 067K50

German-assembled Siemens LI 67SA530 IX has a low noise level, halogen backlight.

Siemens LI 67SA530 IX

Elikor Integra 60 is inexpensive and very popular with consumers.

Elikor Integra 60

Recirculation means that the intake air, having been cleaned by the filter system, enters the room back. Such units do not have an air duct.

Characteristics

Two-stage filtration system.
Compact design.

pros

Due to the movement of the same air in the room, it becomes warm.
Ease of installation.
There is no need for an air duct.
Space saving.

Minuses

Frequent replacement of filter elements is required.
Low odds useful action, the air is only 80 percent clean.
At the end of work in the kitchen, it is recommended to turn off the unit and ventilate the room through the window in order to restore the temperature regime.
With recirculation, the power is less than in a flow system.
Cannot be installed over .

Liberty Base 251 X is the best in its category.

Liberty Base 251 X

VENTOLUX Bravo 60 is different modern design and extensive functionality.

VENTOLUX Bravo 60

The Bosch DWW 063461 model is equipped with two modes, in addition to recirculation, a vent through the duct is provided.

Bosch DWW 063461

It is used in the absence of sufficient draft in the ventilation shaft. A rather primitive device is easy to use, just press one button.

Characteristics

Fans are divided into: axial, radial, diametrical.
Compact dimensions.
The presence of a check valve.
Safety of use.
Standard white.

pros

High efficiency at low cost.
Long service life.
Protects from harmful insects.
The fan is able to suck out the fluff.
They don't take up much space.
Low cost.
Simplicity in management.
Ease of use.

Minuses

Work volume.
Low efficiency, directly from the plate, pollution will not reach exhaust opening where the fan is located.

Vents 100 S is the best in its category.

Vents 100

The Optima 4 D 100 offers optimum performance.

Optima 4D 100

Domovent 100 C is easy to use and inexpensive.

Domovent 100

It is installed above the stove and performs several functions at once.

Characteristics

High power.
Large dimensions.

pros

Multifunctionality.
There is no need to buy additional equipment, two in one.
Ease of use.
Space saving.

Minuses

In the event of a breakdown of any element, both devices will go into a non-working state.
Using microwave oven the ventilation system will not work at full capacity.
Rarely found on Russian shelves, such specimens are more to the taste of Americans.
High price tag.

The sliding panel of the MWGD 750.0 E model increases the aspiration area. The microwave has the best performance.

MWGD 750.0

CATA Chorus has nine programs, halogen lighting and push-button control.

C.A.T.A. Chorus

The appliance automatically turns on, reacting to the intensity of cooking. After cleaning, the system turns off automatically. An indispensable option in the kitchen of forgetful people.

Characteristics

The presence of a sensor that captures the content of the air.
Several levels of system sensitivity.

pros

There is no need to control the operation of the device, automation was invented for the comfort of the consumer.
Self-adjusting power.
Does not distract from the cooking process.

Minuses

The high cost of the product. Similar models without sensors are much cheaper.

Gorenje WHI 951 S1 is the best model in its category, equipped with a drain and recirculation, has a touch control.

Gorenje WHI 951

The Siemens LC 91BA582 is different stylish design with inclined panel.

Siemens LC 91BA582

Krona Naomi Mirror 900 5P-S in modern style with touch control, mounted on the wall.

Krona Naomi Mirror 900

The smell of food is good in the kitchen. The cozy living room smells of flowers, perfumes, but fried potatoes. Cooker hoods can perfectly capture heat, steam and kitchen fumes or burn electricity for nothing.

All kitchen hoods are divided into two categories: with connection to the ventilation shaft and autonomous. Properly selected and correctly connected to the ventilation shaft, the hood will not disappoint the owners.

Types of kitchen hoods

By installation, the following types of kitchen hoods are distinguished:

hinged (standard and flat) - mounted under a shelf or wall cabinet above the stove;
built-in - built into the cabinet body or a specially constructed decorative box;
wall-mounted - hung directly on the wall, they are distinguished by a variety of designs;
corner - for installation in the corner of the kitchen;
island - hung on the ceiling above the kitchen "island".

Functionality of ventilation hoods

Operating modes of hoods:

outflow. Kitchen hood with the output of the ventilation of the entire volume of exhaust air. It is connected to a ventilation shaft or exhausts air outside through a special hole in the wall. Hot wet air and unwanted aromas are removed from the apartment, providing a 100% effect.
Filtration. These are hoods without connection to ventilation. The air, filled with vapors and aromas of the kitchen, enters the filter and, cleaned, is sent back. Filters are located inside the housing, they need to be changed or washed periodically.

Filtration or recirculation mode greatly simplifies installation. You do not have to decide how to bring the hood into the ventilation. At the same time, the performance of the equipment is noticeably reduced.

The filtration of the hood for the kitchen with a drain is made with sintepon, coal, paper, non-woven, acrylic or metal filters.

A dense carbon filter reduces engine power.

The rules for installing the hood without a vent to the ventilation, as well as how to properly connect the hood to the ventilation, read on.

Extraction performance

By sanitary requirements in the kitchen it is necessary to provide 12-fold air exchange.

We use the formula:

P x V x 12 x 1.3

where P - kitchen area, 1.3 - equalizing factor, 12 - air exchange rate, V - room height.

Choose models with a capacity exceeding the calculated by 10 - 15%.

Hood noise level

AT modern dwellings The kitchens are adjacent to the bedrooms and living rooms, so the noise level is very important. A constantly buzzing hood will cause headaches and fatigue.

The more powerful the hood, the noisier it is. But responsible manufacturers (for example, BOCSH, Siemens, Samsung) manage to special form blades, installation of twin fans and additional sound insulation to achieve fairly quiet operation with impressive performance.

For reference, noise levels in different rooms, in decibels:

in a quiet room - 30;
whisper of a person - 35;
the best hoods or quiet music - 40;
human speech at a distance of 2.5 and the noise of an average quality hood - 50.

Do not purchase a hood with a noise level above 50 decibels. She will disturb the tenants of the apartment. The best hoods emit a noise of 44 decibels, and when maximum power no more than 70.

To reduce noise as much as possible, models with an external motor have been developed. The engine is placed at the outlet of the duct. These are kitchen hoods connected to ventilation.

Additional options

Lighting. This function is supplied to the vast majority of kitchen hoods connected to ventilation and autonomous. There are models with a change in the brightness of the light, focusing the beam. Equipped with a motion sensor, turn on the light when the hostess approaches.

Touch control panel and display. Convenient, but doable. The display shows the operating mode, and the touch panel is much easier to keep clean than protruding mechanical buttons or sliders (sliders).

Rules for installing the hood

Installation and connection kitchen hood ventilation requires knowledge of a number of rules:

the body is hung only in level, with careful observance of the horizontal;
distance between electrical hob and the hood should be 65 cm;
the distance between the gas hob and the hood is no more than 75 cm;
the bend of the duct for connecting the hood with ventilation does not exceed 90 degrees;
when the length of the duct is more than 3 m, a second fan is installed to maintain the draft;
when bringing the kitchen hood into the ventilation, it is forbidden to block the ventilation outlet in the wall;
pipes of the same section are used, since aerodynamic noise increases with narrowing;
if the kitchen hood is vented, it is advisable to install a valve that prevents back draft.

Before connecting the kitchen hood to the ventilation, you should read the instructions for it.

Connecting the hood to the ventilation riser

Before connecting the hood with ventilation, take care of all necessary components. To connect a kitchen hood with a vent to the ventilation, corrugation or smooth round PVC ducts with elbows are used. The second option is preferable, as it creates less air resistance, smooth inner surface easier to clean. The pipe diameter is not less than 120 mm, it is selected according to the outlet section of the hood. For fixing the air duct, the hood is equipped with an adapter.

The air duct must have no more than 3 elbows, otherwise the work efficiency will be significantly reduced.

Most often, for the correct connection of the hood to the ventilation, it is necessary to stretch the box and hermetically strengthen the end of the duct in the ventilation duct.

Connecting the kitchen hood to the ventilation will not block the vent if you install a special grill.

The throughput of general house ventilation is from 110 to 140 cubic meters of air per hour. Extraction power can be 180 - 700 cubic meters per hour.

Before you bring the hood into the ventilation, consider the possibility of bringing the duct into a specially made hole in the wall. Otherwise, a working device may cause a “tipping” of thrust. A phenomenon that is especially dangerous in houses with gas heating appliances leading to carbon monoxide poisoning.

The air ducts are joined hermetically, and at the outlet they are installed check valve and a grid.

After the hood is brought into the ventilation, it is connected to the mains. Requires a standard voltage of 220 - 240 V and a frequency of 50 Hz. Sometimes a ground is connected to the outlet, eliminating the possibility of a short circuit.

The main task when installing a hood without connecting to ventilation is to correctly place and supply electricity.

The hood in the kitchen with a vent to the ventilation can work effectively when the filter area is equal to or slightly larger than the hob.

According to the rules, a test run of the hood is carried out immediately after it is connected to the ventilation and mains. And only after a successful first start put on a protective cover.

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Hello Sergey. We answer your question about the legality of installing an exhaust hood in an apartment apartment building.

It should be noted right away that it allows partial use mixed systems ventilation with natural and mechanical stimulation. In other words, install a kitchen exhaust hood(ventilation device with forced impulse) into an individual exhaust duct in an apartment in an apartment building is possible. Another thing is “in which case it is impossible” and “how much power is possible” depends on the operating conditions, the design of the vent. systems, house series, air exchange rates and many other factors.

With a normally functioning ventilation system at home, the influence of a kitchen umbrella (installed by neighbors) on the ventilation of your apartment will be minimal. The thing is that regardless of the power exhaust device your neighbors, the amount of air removed cannot be more than bandwidth air duct, which, as a rule, has a diameter of 130-150 mm. The common shaft (to which your apartment is connected through an accelerating riser) has a larger diameter of 220 - 240 mm.

Problems may occur due to errors during installation of the vents. home systems and improper connection of the hood (kitchen umbrella) to the ventilation system. The ventilation specialists called by the managing organization on the basis of your written application can clarify the cause of the problems.

Causes of odors from ventilation

The main reason for the appearance foreign odors of the ventilation system is the effect of overturning thrust. The physics of the process is as follows: the higher the temperature atmospheric air and lower in the room - the worse the natural draft. At certain conditions instead of removing air masses, through the vent. air begins to flow through the grate. In other words, with insufficient draft in the exhaust shaft and poorly organized air flow in the apartments, the air flow created by your neighbors' kitchen umbrella can enter the rooms up the riser.

Checking for "back draft" is simple: you need to bring a strip of paper to the ventilation grill.

Odors from exhaust ventilation your neighbors may be due to the lack of stubs. For example, consider the ventilation system of one riser of a typical high-rise building(series II-18, I 209A, etc.) It consists of a common shaft and two accelerating channels. The system works like this: polluted air from the apartment must rise through the accelerating channel to a height of 2.5 - 2.7 m (depending on the project), "rest against" the plug (one floor above) and exit through a special "window" into the common shaft. The problem is that in 90% of cases there are no such stubs! Without plugs, such a system, consisting of a common shaft with two channels (separated by plugs into accelerating sections), turns into three transit shafts.

What to do?

Most often, this problem is solved by installing a plug that will cut off the air flow from the lower floors and direct it through the regular window provided for this into the common shaft.

You can independently deal with the flow of air from the ventilation into your apartment by installing a special grate equipped with a valve that will be open without interfering with normal air exchange in your apartment. When air is forced from the shaft into the room, the valve will automatically close.

Anyway: for determining possible cause problem and how to fix it(including as a basis for influencing neighbors) must be submitted to the governing body in writing.

Important! For unauthorized changes to the configuration of the internal ventilation system, the violator is imposed various forms administrative responsibility.

When cooking, the air in the kitchen needs constant recirculation. Stove steam, burnt milk, food smells, or just foggy windows are no fun, even if you've done a great renovation. Today we will tell you how to install a hood in the kitchen to get rid of these problems. Everyone can connect it if you know the rules of grounding and wall mounting. It is also worth deciding in advance which type of kitchen hood is right for you, and what should be the power of the device. Let's start with this.

Installation of the hood in the kitchen will depend on the type of model chosen. There are the following types:

suspended (also called flat and standard) - mounted under the cabinet above the stove;
built-in - installed inside the wall cabinet, so they fit perfectly into any design;
wall-mounted - mounted on the wall above the stove, may have various design corps;
corner - installed in a corner;
island hoods - designed for a kitchen with an island (you can fix it anywhere by hanging it from the ceiling).

Advice! Regardless of the type, the installation of a kitchen hood above the hob is only possible at a height of 70 cm, and above the gas stove you need to retreat 80 cm.

Hood operating mode

In addition to the type of attachment, hoods differ in ventilation modes.

Flow - pull polluted air from the kitchen into the ventilation shaft. This method of ventilation is called air extraction (exhaust mode). It is the most efficient and productive.
Circulating hoods - pass air through the carbon filters in the case, getting Fresh air. Such a model does not require ventilation in the kitchen in the apartment, so its installation can be called simpler, but less effective in terms of cleaning.

Required power

An important parameter when buying a hood is its cleaning performance, which is measured in cubic meters per hour. As you might guess, this value shows how many cubic meters of air the hood will pass through itself in an hour of operation.

According to the standards established in Russia, the air in the kitchen must be updated 12 times per hour. Therefore, you can easily calculate how much power you need using this simple formula:

Kitchen area * Ceiling height * 12 times

It is also worth considering the margin for power loss due to bends in the duct, the length of the ventilation shaft and other parameters. To do this, add 30% to the result.

For example, if your kitchen has an area of 6 square meters. m. and a ceiling height of 2.5 m., then the calculation will look like this:

6 * 2.5 * 12 * 1.3 = 234 m3

Advice! Also, when buying, you should take into account the noise emitted when the ventilation is on, which manufacturers indicate in decibels. Do not buy models that emit noise over 50 dB. There are almost silent hoods with two fans or one external. In addition, some models are equipped with a sound-absorbing housing.

Grounding and grounding

Before telling how to make a hood in the kitchen, it is worth mentioning electrical safety. Since a lot of grease splashes and moisture accumulates inside the case, the risk of electric shock increases if the hood is not properly connected to the mains.

Therefore, a do-it-yourself kitchen hood must be connected to the network with three wires: phase, ground and zero. The ground wire according to the standard has yellow with a green stripe. Before installation, provide grounding for safe use of the electrical appliance.

If the house has a ground loop and euro-type sockets are installed, there will be no problems: when connecting, the wire is connected to the ground terminal, which is indicated by strips of different lengths or the word Ground (GND). If the equipment does not have a ground connector, then you can make it yourself by screwing the wire to the metal part of the case.

Euro socket with connected grounding in Russia is found only in new apartments
But many may not find euro-sockets at home, and they will ask themselves the question: how to connect the hood in the kitchen if there is no grounding? In this case, you can do the zeroing yourself, but in no case connect the neutral wire to pipes and batteries. You need to connect it to a deaf neutral.

To do this, open switch box with counters and find a walled pipe in the wall where the wires come from (be careful, the wires are 220V!), or a special bus, as shown in the photo. Most likely, you will find a ready-made pin on it and already thrown neutral wires. This is the deaf neutral, the pipe is perfectly grounded. It is necessary to lead a stranded wire with a cross section of at least 2.5 mm2 from it to the kitchen, and connect the hood through a 6.3A automatic separator.

Zero bus on the shield in the entrance

Note! If there are already wires connected to grounding, then in no case turn them off! This may result in an electric shock. Throw your wire over the others and tighten the nut. If there are no wires and the pipe is smooth, strip it and fasten the wire contact to the clamp. If you do not understand this matter, it is best to contact a professional electrician.

Ventilation in the apartment

Scheme of a self-made anti-return box with a valve Installation of exhaust ventilation in the kitchen almost always violates the standard ventilation of the apartment. Often, for its installation, it is recommended to punch an additional hole for air exhaust, but this will not solve all the problems. The fact is that if you increase the window of the ventilation shaft, then its cross section will remain the same, so the quality of air exchange will not improve.

The way out of this situation is quite simple: this is the installation of an additional box with a clapper valve, the device of which is shown in the photo.

As you can see, there are 2 holes on the box. The valve is marked in red. When it is closed (in a horizontal position), air can easily exit through the window, providing natural ventilation to the kitchen.

When pressure builds up while the fan is running, the valve changes its position and closes the first window, thereby ventilating with the hood.

The main advantage of such a connection scheme is the absence of reverse thrust and the preservation of natural ventilation when the hood is turned off.

The valve is adjusted with a weak and thin spring. In the diagram, it is shown by a broken line. Best for valve cover lightweight material such as aluminum or plastic.

Duct selection

There are several types of kitchen ducts for household ventilation:

Plastic air duct is more compact and inconspicuous

PVC plastic air ducts are strong, light and silent, as they create almost no air resistance due to their smooth surface. There are both rigid narrow plastic boxes and flexible pipes.
Corrugated aluminum pipe is a fairly simple material for do-it-yourself installation, it can be freely bent under right size. Another quality of corrugations is the absence of hum or vibration, unlike hard boxes. However, an important drawback of such an air duct is an ugly appearance, so figure out where to hide the ventilation, for example, in.

The installation process of the hood

Of course, the installation of a kitchen hood with your own hands depends on its type and location of the ventilation shaft. First, we will consider installation using the example of a built-in device in a cabinet.

Anti-return mechanism

Duct connection

Advice! When installing ventilation, try to minimize the number of pipe bends so that the air draft remains good enough. With each turn, power is lost by about 10%.

Wall mount without cabinet

Conclusion

About 2 times a year, you need to clean the hood from burning to prevent fire. Now you know how to mount the hood for the kitchen and you can easily do it yourself. In doing so, do not forget to follow the safety rules when electrical work, and if you are not strong in them, it is better to invite an electrician.

Hoods with a vent to the ventilation are widely used in the arrangement of kitchen work areas and are in high demand. Devices allow you to completely update the air volume of the room and prevent greasy drops, moisture and gas combustion products from settling on the walls and ceiling.

Specifications

Unlike hoods closed loop operating according to the scheme: polluted air intake - run through the filter system - removal of the cleaned masses into the room, devices with a vent to the ventilation bring the air outside. This technology allows you to quickly clean the space from the smells of cooking food and does not require regular replacement of filters. For large kitchens, overall models are provided, equipped with two engines and suitable for use in catering establishments.

Structurally, hoods with a vent to the ventilation consist of a housing, a control panel, a filter coarse cleaning- a grease trap, and an air duct leading into ventilation duct.

The body of the models can be made of several materials.

by the most budget option are metal appliances painted with heat and moisture resistant enamels. Such models require careful maintenance and careful operation. The advantages of such cases include an attractive appearance, and the disadvantage is the tendency to scratches when mechanical action, and clouding of the enamel over time.
Extracts from tempered glass are moderately priced and stylish. The disadvantage of such products is their exactingness for regular and painstaking care, which requires some skills and time. The fact is that on the surface of glass, especially painted in dark colors or tinted, fingerprints, water drops and stains are very clearly visible. Therefore, washing such a case requires the use of a special liquid for glasses, patience and skill.
The most spectacular and expensive are chrome models from of stainless steel. Devices differ in ease of designs and elegance of forms. Products do not require painstaking care and retain their original appearance throughout the entire period of operation.

All hoods are equipped with control panels, which can be push-button or touch. Mechanical panels are more understandable and familiar to the elderly. The buttons on these models are located on front side, thanks to which to establish desired mode won't be difficult. Touch panels are modern and convenient. They are equipped with temperature and humidity sensors, the change of which automatically changes the operating mode of the device. Programming the hood using touch control occurs once - when it is installed. Further, the device operates offline and does not require constant adjustment.

Air ducts installed on hoods are presented corrugated pipes and plastic channels. The former have round shape sections, are easy to install and have good flexibility. Installation is carried out using the clamps supplied with the device. The advantage of corrugations is the ability to give the pipe any bending radius, and the disadvantages include noisy operation and the likelihood of fat settling on the internal folds of the pipe. Plastic air ducts can have both round and square sections, they are produced mainly white color and fit perfectly into the interior. The pluses include an absolutely flat inner surface, which contributes to the passage of air from more speed, and low noise level. The downside is the lack of flexibility and the need to use connecting fittings, such as elbows and adapters, during installation.

Two types of filters are installed on the hoods. The external metal filter does not require replacement and deposits up to 95% of grease and dirt on its surface. Removal of contaminants is carried out by washing the grate with any detergent that breaks down fat. The second type of filters is represented by replaceable synthetic traps, which, after heavy pollution, are thrown away and replaced with new ones.

Advantages and disadvantages

High consumer demand for vented models due to a number of undeniable advantages of these devices.

Due to the removal of polluted air masses to the street, the degree of purification of the premises is almost 100%. This is almost 30% higher than the efficiency of closed-cycle units operating on the principle of filtration.
The absence of a filter system in the design of the hood eliminates the need for their regular replacement. This greatly simplifies the maintenance of the device and significantly saves money.
The aesthetic appearance and neat shape of the unit allow you to install it in any style of kitchen without fear of cluttering up the space and ruining the interior.
The high performance of the hoods is due to the presence of a coarse filter with minimal resistance. This allows steam and smoke to freely leave the room without lingering in the pre-filtration zone.

The disadvantages of the devices include the complexity of installation, which is associated with the need for duct equipment, and the presence of noise during the operation of the unit. In addition, for the correct and effective work device requires a sufficiently good traction, in the absence of which there is a need to install powerful fans. In addition, in houses that are not equipped with ventilation ducts, you will have to hollow out the wall and independently form a hole for the duct.

Kinds

On the modern market ventilation systems hoods with access to ventilation are presented in a wide variety. Models differ from each other in the way of installation and power.

According to the method of installation, five options are distinguished.

Mounted units are usually represented by standard and flat models. Appliances are fixed under the shelf or wall cabinet hanging over the hob. They are installed in small-sized kitchens, and are distinguished by their compact size and modern design.
wall models are characterized by a wide range with a large selection of colors and designs. They are hung on a section of the wall located above an electric or gas stove.

Island appliances are designed for spacious rooms and are installed by hanging on the ceiling above the hob. They are used in cases where the hob is installed in the middle of the room and does not adjoin the wall. Fixing the device to the ceiling is carried out using a steel cable.
corner models are designed for kitchens in which the stoves are located in the corner, and the use of other types of hoods is impractical. The devices have a stylish design and look very interesting.

Embedded hoods are used if the dimensions of the room require their placement in the body of cabinets or decorative boxes. Such models are selected individually and strictly according to the size of cabinet furniture. Thanks to its integration into kitchen sets are a very common type.
Fireplace models belong to wall appliances, but for their unusual design and similarity with real fireplaces, were singled out in a separate group.
Dome household range hoods are also popular with consumers. They may have an angle or wall-mounted, and are able to almost instantly remove polluted air masses through the ventilation shaft to the street. However, due to their low power, they are used only for domestic needs. In catering premises, this type of hood is ineffective.

In my own way constructive device hoods can have a solid or telescopic body. The first are traditional models, with constant dimensions and a complete design. Telescopic appliances are equipped with a retractable panel that can double the working area of the hood. This type of unit is an effective solution for small areas, and allows you to install full-fledged exhaust equipment without losing part of the space or cluttering it up.

By power, the units are divided into household single-engine and powerful twin-engine models. The former are installed in the kitchens of apartments and houses, while the latter are used in cafes, restaurants, pizzerias and other catering establishments.

Functionality

In addition to the main mode of removing polluted air, hoods with a vent to the ventilation are equipped with a number of additional options. For example, in many models there is lighting working area. The brightness and direction of the beam are independently adjustable, which is very convenient when placing the hood in studio apartments: the lighting function allows you to cook without turning on the big light. The most technologically advanced models are equipped with motion sensors that react to the approach of a person and automatically turn on the light.

In more expensive hoods, halogen lamps are installed as a light source., while cheaper models are equipped with incandescent lamps. Light from halogen lamps can be diffused or focused at one point at the request of the consumer. Incandescent lamps operate in a stable mode and can only slightly change the brightness. In addition to the lighting option, some models are equipped with a timer that allows you to control the cooking time and simplifies this process.

Selection criteria

One of the most important indicators of the efficiency of the hood is its performance, which indicates how much air the device can pass through itself in one hour. The calculation of this parameter is individual for each kitchen and can be determined independently. To do this, multiply the volume of the room by 10. The resulting value will indicate the performance of the device required for this area.

Some sources recommend multiplying this number by a factor of 1.3, and, based on the value obtained, purchase the unit. The coefficient takes into account the maximum air pollution and the length of the duct, therefore, the productivity calculated by this method is 15% higher than that obtained as a result of the initial calculations. The need for this margin is due to the fact that the device often works at the limit of its capabilities, which is why it wears out quickly and makes a lot of noise.

The second criterion when choosing a model is to determine the desired size. In this case, it is necessary to be guided by the area of the hob, which should completely overlap with the area of the working area of \u200b\u200bthe hood. For small kitchens it is better to choose a telescopic option: when folded, it takes up very little space, and if necessary, it can fully update the air in the room.

Not less than important criterion when choosing a hood, the noise level that the appliance operates at full power is. An indicator of 35-40 dB is considered optimal for a person. For comparison: a conversation between two people at a distance of 4-5 meters corresponds to this value. As you get closer to the speakers, the noise level will increase, and when you are two meters away from them, the noise will reach 60 dB. The same amount of noise is produced by an extractor hood of medium and low power, working on the maximum number revolutions.

More serious industrial devices already produce 70 dB of noise. Therefore, in the case of an adjacent location of the kitchen and bedroom, as well as in studio apartments, where there is no spatial differentiation, it is recommended to purchase appliances with a noise level not exceeding 45-50 dB. In apartments of a new layout, where the kitchen is located at a considerable distance from the living rooms or separated from them by a corridor or a bathroom, it is allowed to purchase appliances with a maximum noise level of 60 dB.

Hoods, in which this figure is 70 dB, are not recommended for use in residential premises. When buying a design, you must ask the seller to turn on the device and test its operation in different modes. If the noise from the operation of the unit causes irritation or extraneous tapping or grinding is heard, you should not buy such a product.

Mounting

You can install and connect the hood to the ventilation duct yourself. To do this, you just need to follow a number of rules that experienced experts recommend paying special attention to.

Hanging the body of the device must be carried out in strict accordance with horizontal position. If the house has building level, then people who do not have experience in installing hoods need to use it. From correct location the correct operation of the fans and the traction force will depend on the unit.
It is important to strictly observe the distance recommended by the manufacturer between the hood and the hob. When installing the device over electric stove this distance should be 65 cm. Above gas stoves hoods are installed at a height of 75 cm.

The maximum allowable bend of the air pipe must be observed, which cannot exceed 90 degrees. Otherwise, the products of gas combustion and fat droplets will settle on the inner walls of the pipe, and over time will lead to a decrease in its aerodynamic properties and a deterioration in traction.
For duct lengths exceeding three meters, an additional fan is required.
When connecting the duct to the ventilation shaft, it is necessary to use pipes of the same cross section. If you connect a wide pipe with a narrow one, the level of aerodynamic noise will increase significantly and it will become unbearable to use the hood.

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