What kind of hood should I choose in the kitchen?

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What kind of hood should I choose in the kitchen?

Most often, the hood in the kitchen without a duct is used in cases where the vent does not cope with its tasks.

The need for the device is explained by the constant process of cooking, which produces smells, steam, grease, soot on the walls.

Contents:

  • How the hood works
  • Advantages and disadvantages of hoods without air duct
  • Installation of the circulation hood and design
  • Hood with duct
  • Installation problems
  • Installing the hood
  • What are the most important characteristics?

Principle of operation of the

extractor The main and main element of the exhaust device is the engine, as well as the fan and filter.

The fan can be called an air guide, as it facilitates the movement of air to the filter and further through it.

Extraction principle

Depending on the direction of the air, the following types of hoods are distinguished:

  • Extractor - assumes the air outlet to the ventilation shaft or to the street with the help of an air duct. The positive moment of such a device is that all the polluted air leaves the room. See the photo above;
  • Circulation - duct in this device is missing. The principle of the extract is that, when absorbing dirty air, the already cleaned air is returned to the room. Such structures are equipped with a double level of filtration. See the photo below.

In other words, the hoods are divided into those whose device assumes the presence of an air duct, and those that cope without it. Which of them to choose and not to be mistaken with a choice, we will consider below.

Circulation hood

Advantages and disadvantages of hood without air duct

Positive aspects:

  1. Extraction without air duct does not load the general ventilation system;
  2. Does not block the kitchen vent, when the air is off, the air does not stagnate in the room;
  3. Easy installation, which does not require special knowledge and skills;
  4. Does not overload the interior, no need to look for a way to hide the duct;
  5. Filter replacement is easy. Ease of operation;
  6. No adapter, power comes from an ordinary outlet;
  7. Allows you to install a cooker or hob anywhere.

Negative moments:

  1. Frequent replacement of filters. The frequency of replacement is determined by the number of family members, the intensity of the work of the plate, and so forth;
  2. The exhaust system of the equipment with the duct works more efficiently in comparison with the circulation hood;
  3. Do not relieve the room of moisture.

Installation of the circulation hood and design

To properly install the hood in the kitchen, it is necessary to draw a vertical line above the hob in the middle, from which further measurements will be made.

You can use the level to draw a flat horizontal. This line will be the lower section of the device.

If the set of equipment is equipped with a template, then installation is carried out on it.

The hood is attached to the dowels( sometimes anchors, depending on the wall), the diameter and length of which must be adjusted according to the manufacturer's recommendations.

This completes the installation, it is necessary to turn on the device in the socket.

Hoods without air duct design are divided into the following types:

  • Flat - can be both horizontal and vertical. Well fit into the interior design;
  • The built-in hood is most often "hiding" in a hanging cupboard. Telescopic hood is a subtype built-in: if it is not necessary, it is retracted.

Coal( for odor absorption) and grease-absorbing filters are used for circulation drawing. The second filter is responsible for the safety of the device itself.

In its absence, the hood can quickly become unusable.

Photo:

The fat-absorbing filter is of several types:

  • Metallic, the advantage of which is the possibility of reusable use;
  • Acrylic fiber - used as a filter, which is also reusable. It is desirable to wash it on hands, because strong spinning can damage the structure;
  • Single use are filters made of paper, sintepon, non-woven. Their surface is covered with special signs( patterns).When the patterns can not be discerned, then the filter must be replaced.

Extractor with duct

A kitchen extractor with a duct is used more often, because it is more efficient due to the complete intake of "bad" air.

The circulation view of the extract takes polluted air, cleans, and then returns it back to the room. Unfortunately, purified air sometimes comes back with the bad.

It is not always possible to install a hood near the ventilation window. Therefore, they resort to air ducts. They come in two types: plastic and corrugated.

For kitchen, plastic ducts are made of PVC material, which is not afraid of temperature difference, it is resistant, durable and light, and also hygienic.

Aluminum corrugated pipe has a non-aesthetic appearance, so it is often tried to hide. It should be noted that such ducts are very flexible.

The peculiarity of the installation of pipes is that bends lead to a decrease in capacity, the angle of inclination should remain blunt( maximum straight).

Video:

In this case, the diameter of the pipe should not change drastically, the transitions should be smooth. If the diameter of the hood and the diameter of the ventilation window are the same, then this option can be considered ideal.

In this case, the duct diameter is selected in accordance with the general parameters.

Installation problems for

A negative aspect of installing this type of hood is that it leads to disturbances in natural ventilation, since the air passage remains permanently closed.

There are three ways to restore natural ventilation:

  1. Installation of an additional hole in the ventilation duct. You can say at once that this is not the best solution to the problem, because the bandwidth of the channel does not get better from this;
  2. A more rational solution is to install a window in an external wall. Important: this is done only after obtaining permission from the municipal services;
  3. The most correct way out of the situation is to install a cracker valve. It operates as follows: when the device is turned on, one of the two holes located inside is closed by a flap, providing a forced draft. When the mode is off, the damper is in a position overlapping the second hole, thereby providing natural ventilation.

The valve mechanism is equipped with a spring, the diameter of which should be 4-5 mm, the length should not exceed 15 cm, and the diameter of the wire - 0,2-0,3 mm.

Installing the

The installation of the built-in hood starts with the creation of a cork case, which can be made of aluminum, sheet metal or galvanized.

You can purchase a ready-made valve, which will be fixed in two places: to the cabinet and the ventilation window. To begin with, the valve is placed on the cabinet, trying on.

Then the cabinet needs to be removed and the markings to make holes in its lower and upper boards.

The air duct is connected as follows: corrugation or plastic ducts( for self-installation it is more convenient to use flexible materials) are pushed through the holes in the cabinet. In the upper part for the valve, it is necessary to give the pipe a square shape.

Video:

Then the corrugation is cut off, the protruding ends at the top bend outwards. The cabinet can be installed in its place.

The valve is then installed. All cracks, gaps are treated with silicone sealant. After that, you can install the hood itself in the cabinet, which is attached to the screws or dowels.

The corrugated hood with a hood is fixed with a special clamp.

The final step is the connection of the corrugated pipe to the vent window, for convenience of connection a grill with a round hole is used.

Plastic ducts are fastened exactly the same way, connecting the components together.

Installation of the hood without a cabinet is carried out as follows: to the wall under the bell it is necessary to attach the frame in the shape of the letter "P" to the dowels.

In such cases, plastic ducts are more often used. The clapper valve can be installed on the upper section of the box.

What are the most important characteristics?

When choosing the hood, attention should be paid not only to its design and the laconism of the device in the interior, but also to the technical characteristics: power, noise, regulation.

The power of the hood should be selected according to the volume of the room. The volume of the kitchen is calculated as follows: the area is multiplied by the height of the ceiling and multiplied by a factor equal to 6 or 12.

Why this particular figure? Because a good hood should provide six hours of air exchange per hour - this figure( 6) is minimal, so it is better to take it in double size.

For example, the kitchen area - 10 square meters.m, ceiling height - 2.7 m, it turns out: 10x2.7x6 = 162, in a double size = 324 cubic meters.m / h.

The first digit( 162) indicates the minimum power the equipment must have.

In the studio apartments, where the living room is combined with the kitchen, it is necessary to take into account the area of ​​the whole room.

Do not choose a hood with more power than necessary, since additional energy will be expended, and it will be noisier.

To select a quiet device, you should pay attention to the figure of 40 decibels.

Video:

The simplest hoods with the possibility of adjustment have a speed switch.

More expensive and sophisticated devices can show the degree of contamination of the filter, have a timer and a clock, as well as sensors that automatically turn on and off the hood, etc.

It can be noted that the more different sensors the indicators have in the hood, so they will be more flexible:the operation of the devices will be more accurate.

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