An exhaust device is a necessary element of the kitchen. It is used for ventilation of the room. When the cooking process is in progress, the food may burn, and then unpleasant odors will appear. Removing them will not be difficult with the help of modern technology.
If you decide to get an exhaust hood, the important thing is to correctly calculate the distance from it to the stove so that odors are removed as efficiently as possible.
To ensure the required cleanliness of air in the room, comfortable for a person, ventilation must be mounted in accordance with all accepted norms and standards. For different types of plates there are two types of hoods: inclined and regular (straight). The recommended distance from the exhaust device to the stove depends on the type of kitchen panel and the design features of the equipment for a particular kitchen.
The minimum distance above the countertop of the gas stove at a conventional hood is seventy-five centimeters, above the electric stove is sixty-five centimeters. If we consider the inclined hood, then the indicators will be fifty-five centimeters for gas and thirty-five centimeters for inclined ventilation.
The norm of distance is chosen by the person who will cook, so it can also depend on the growth of the owner, such as the kitchen, the height of the ceilings.
It is allowed to change the height of the hood by 5-10 centimeters from the minimum distance. The correct choice of the distance between the exhaust device and the stove top affects the efficiency, safety of operation and the long-term use of this household appliance. After all, improper installation of the device below the required level entails heating and, consequently, the failure of the unit.
According to the type of design, hoods are divided into three types:
The operation process of the air intakes flow structure is as follows. Duct pipes are connected to a common ventilation system, polluted air through the pipes goes into general ventilation, and clean and pleasant air enters the room where food is cooked through open doors and windows. Circulation models are not connected to the common house system, in them the air is cleaned in the internal filter system of the unit and returned to the kitchen.
A high-performance motor is installed on this device, which increases the efficiency of the unit. Similar designs are usually installed in old houses or in kitchens where the hob top is located away from the ventilation duct.
Mixed exhaust devices have design features of the previous types, they have an air duct that works together with an air filtration system. It is convenient to use such a ventilation system in winter to keep warm in the kitchen and in the apartment. The disadvantage of such an air intake is that when the device is turned off, due to its design, it blocks the ventilation. Therefore, there is a forced need to open the windows for ventilation. Also, the installation due to the powerful motor is very noisy when used, the same applies to circulation models.
How do the dimensions of the equipment affect?
The dimensions of the ventilation of the kitchen are different, it is worth considering this when choosing a hood. It should be installed after measuring the kitchen itself.
It is necessary:
- calculate the size of the room;
- determine the position of interior items in the kitchen;
- measure the dimensions of the plate;
- take into account the height of everyone living in the apartment;
- choose the desired type of ventilation and efficiency;
- Consider where the device will be installed.
Hoods built into any interior item are installed directly above the gas or electric stove to ensure maximum efficiency. Such models are located inside the interior of the kitchen.
Such a ventilation system is invisible in the kitchen, visually you can see only the surface into which air enters. Of the various types of built-in ventilation, telescopic ones are especially popular. These hoods have a powerful motor with a maximum capacity of 1000 cubic meters. m / hour. To install models of this type you will need a wall cabinet without a bottom. The dimensions of the cabinet and ventilation must match.
When an air duct is installed, it is recommended to avoid unnecessary bending of the pipe to avoid loss of power. It is necessary to install check valves for exhaust ventilation so that polluted air does not get back into the room. Installation of this type of hood starts with the assembly of a cabinet or duct. The box is made of wood. The assembly of the box is as follows: the top of the box and its side parts are fastened immediately, and then the dimensions of the box and hood are compared. Then, the lower part of the cabinet is mounted, where a hole for the duct is cut out. For silent operation, plastic ducts are recommended.
What to consider during installation?
If you have a compact cooking room, then by acquiring a three-dimensional ventilation structure, you risk creating inconvenience to yourself and your family. In this case, it will be advisable to take the built-in hood and install it in a cabinet on the wall, if it is above the hob or in another element of the kitchen interior. The main thing is that it is located above the countertop of the stove. You should select the size of the air intake corresponding to the size of the plate over which it will be installed. If the dimensions are smaller, then the air intake will not take place completely, therefore, the air will not be cleaned. But if the air intake device is slightly larger than the stove, then there is nothing to worry about, it is even better.
Dimensions and characteristics affect the height of the exhaust device above the stove. Low power systems should be installed at a height of at least seventy-five centimeters. If the capacity of the air intake exceeds five hundred and fifty cubic meters. m / h, then the distance from the cooking surface to the edge of the device should be increased.
The height of the ventilation will also affect the height above the stove. If it is zero, then no changes in height need to be made. But if an angle appears, then the distance from the lower edge of the exhaust device to the surface of the stove should be about sixty centimeters. An exhaust system works on a stove where the temperature reaches high values. Due to the large size and improper installation on the hood, greasy spots can accumulate, then it will become dirty by itself. You should know that dirt and stains are easily flammable and, therefore, if the hood is improperly installed and contaminated, fire can occur.
Ventilation, like any electrical appliance, needs power. When installing, you need to consider whether the outlet is blocked or not, as well as the distance to it. At the factory, in the production of exhaust devices, they are equipped with a short electric cord. The most rational option is that the outlet should be ten to thirty centimeters above the unit and offset by twenty centimeters relative to the axis of symmetry of the device. This is important because a pipe for venting air will go directly along the axis of symmetry.
The air duct of the device has its own design, for the most efficient air intake, it must have a minimum number of right angles, and also must not be squeezed anywhere, have distortions. It is necessary to clean the duct, as it has the property of clogging. With clogging, the area of the passage section decreases, so the air does not enter in full. This reduces the efficiency and productivity of the device.
Installation of ventilation is a responsible task, how the whole system will work, its efficiency and productivity, depends on the correct installation. What should be considered during installation? The first step is to determine what type of ventilation will be: circulation, flow or mixed. After that, you need to determine the type of ventilation: direct (normal), inclined or built-in. Each of them has its own installation method and its own tricks, and each of them has its own pros and cons.
Conventional hoods often take the form of a trapezoid or rectangle. Installed over a gas or electric stove. As a rule, the unit is mounted on the wall, as it is large, so installing it in a cabinet is not an easy task. You need to pay attention to the availability of the outlet. The lower edge of the ventilation should be at least sixty-five centimeters above the stove and below ninety centimeters so that the efficiency of the exhaust device is not lost.
A ventilation hole is also worthy of attention, not in all houses, designers install holes in a way that is convenient for residents. There is a way out of the situation, this is the use of a flexible corrugated pipe or a rigid plastic pipe for air ducts. To reduce the noise level, it is recommended to stretch the corrugation. The hood should be firmly attached to the wall, you should first prepare the wall by drilling holes in it with a puncher and inserting the dowels. After firmly fixing the unit, the duct is further installed.
The main thing in installing inclined ventilation is to check whether it interferes with the opening of wall cabinets. For small rooms, a hood of fifty centimeters will be sufficient. If the room is often prone to pollution or large in area, it is recommended to install air intakes larger than eighty centimeters. If the hood model has an air exhaust function, you must additionally install the ventilation pipe and seal the seams that appear.
If the unit operates autonomously without air exhaust, only access to the mains will be needed. The distance between such a cooker hood and hob should be more than sixty centimeters if the stove is gas, and fifty centimeters if it is an electric stove.
How to measure and install?
During operation, pipe vibrations are possible. In order to avoid its deformation, it is recommended to leave a little space between the exhaust pipe and the ceiling. You can install it yourself or resort to calling the wizard. Installation of the ventilation system is carried out in several stages. The measuring height measures the required height from the plate to the intended start of the hood. Using a special level, a line is drawn parallel to the horizon. It is a limiter of the height at which the lower part of the air intake housing will be located.
After drawing the line, you need to find its center and draw a perpendicular straight line from it with the help of a level - this line determines the place where the duct will be located. Next, we measure the apparatus and roughly compare its dimensions with the already marked lines. If the upper face of the unit rests against the ceiling, then the air duct will need to be shortened so that the air intake housing does not fall below the mark where it will not be able to function normally.
Next, we measure the distance from the lower edge of the device to its upper mounts on the case. Draw perpendicular lines to the lower horizontal, and connect the ends of these lines to each other to get two parallel lines (upper and lower). On the upper horizontal line we measure the distance from the center, noting the location of the unit mounts. Using a drill or punch, you need to drill holes in the wall, insert dowels into them, into which screws will later be screwed.
It is recommended to install the device on the wall from its upper part, after installing the top. Align the device horizontally and fix it permanently on the wall. At the very end of the work, a corrugated pipe or a plastic channel is attached to the air intake. Hanging the air intake is recommended after thorough preparation of the kitchen, after all measurement procedures and reading the relevant documentation. At each plant, an installation and operation manual is attached to the exhaust unit, where parameters for installing a specific type of device are indicated.
On average, the lower edge of the hood during installation should be 65-90 centimeters higher than the stove. If installed below the required height, there is the possibility of damage to individual structural elements and ignition of fat deposits in the air intake. Correct installation gives a guarantee of safety of life, exactly the same as the correct connection of the device to the electrical network.
Since fat droplets fall into the device during operation and accumulate moisture inside the air intake filters and accumulate inside, it is possible to get an electric shock if the unit was connected incorrectly during installation.
Also, due to the accumulation of impurities in the pipe section, the area of the passing air decreases and the productivity of the work is lost. When installing the ventilation channel, you must make sure that it does not block a single hole in the room. Otherwise, fogging of the windows, the remnants of the unpleasant smell in the room are possible. If you have one outlet, you should break through the additional exit from the ventilation shaft and install an air bypass valve there. The valve will close the air flow when the air intake is turned on. For houses located outside the city, the best way is to break through a second hole in the wall for the duct duct.
Punching is necessary so that the channel does not affect an existing hole. The pipe from the unit is discharged into the drilled hole. An air bypass check valve should be installed at the end of the hole so that air from outside the house does not enter through an additional hole. In a standard two-room apartment of an apartment building, it is not always possible to make a second hole. In this case, there are two ways to solve it: expanding the channel or using a special adapter that has two holes. Installation of the exhaust device can be done with your own hands, if you have sufficient qualifications and knowledge, but experienced people are advised to call specially trained workers to perform the installation of the hood.
In the next video, you will find the installation of a hood in the kitchen.