The principle of operation of the air exhaust system

The kitchen must be maintained at a constant cleanliness and optimum humidity, and undesirable odors should be absent. Air extraction, a device that removes unwanted aromas, dampness, is successfully coping with solving such problems, being simultaneously an attractive element of the interior.

The hood device and its principle of operation

The principle of organization of a kitchen hood with a conventional ventilation duct

The principle of operation of a kitchen hood is similar to a vacuum cleaner. A fan rotating inside the device draws in air, which creates a zone of reduced pressure in front of the housing. Air streams rush toward it, collecting on its way fumes, dust and masses worked out in the process of people's breathing. Since the hoods are located directly above the stove, they receive products of combustion, evaporation and grease. If the food burns out, the appliance will absorb the smoke, preventing it from spreading around the apartment.

The hood is simple, but functional:

  1. Body. Serves for placement of parts and mechanisms. It has a different color and size. It is made of stainless steel, plastic or black enameled iron.
  2. Input filter. It is a dense grille located behind the front or bottom panel. Designed to trap fat and soot.
  3. Electrical engine. It serves to rotate the propeller, is made in a sealed casing, which prevents moisture from entering. Some manufacturers put two low-power motors that produce less noise.
  4. Fan. Today, drum-type products that are more efficient than axial ones are more often installed.
  5. Lighting. It is made of 220 V lamps or 12 V LED boards powered by a stabilizer. Designed to illuminate the hob.
  6. Air duct They are a pipe that leads pollution to the street or to the common shaft of an apartment building. In devices of recirculation type there are no air ducts; air is passed through mechanical filters on the upper part of the housing.

The trading network presents a wide range of household appliances. To make the right decision, you should study the features of the product, as well as the processes that occur when the cooker hood is working.

A variety of exhaust devices

Recirculation hood without connection to the ventilation duct

Manufacturers produce kitchen appliances in various versions in terms of device, size, appearance and placement methods.

By the principle of operation, devices are divided into the following types:

  • Flowing. The drawn-in pollution moves in the general system of ventilation or on a separate channel are brought out through the hole in the wall.
  • Recirculating. Air is driven through the filters and returned to the room.

By type of installation, the products are divided into the following categories:

  • Mounted. Hang on the wall directly above the stove. Have a horizontal bottom panel.
  • Recessed. Depending on the model, they are attached to a shelf above the stove or next to the hob.
  • Outboard. Mounted on the ceiling, air ducts can be masked by suspension or tension systems.

According to the design, the hoods are divided into the following types:

  • Equal. They are a rectangular structure located parallel to the floor.
  • Inclined. The filter is tilted and opens by opening the decorative front cover.
  • Dome. They are the most powerful, since large motors and fans can be installed in a large case.
  • T-shaped.Belong to the category of suspended products. They are installed above the work surface located in the center of the kitchen (island type).

Manufacturers produce products whose case has a natural steel sheen, painted in white, brown or black. There are models decorated with patterns, ornaments and paintings.

Instruction for using the hood

The cable should be away from the gas riser.

You can use the hood in the kitchen without age restrictions or any other criteria. The device is completely safe and reliable in all respects. With durable brackets for securing the product, they can support the weight of a child or large pet.

Rules for using devices:

  1. Do not fasten the cable to the gas riser, as induction can cause ignition.
  2. Use of equipment only with connected filters or with exhaust ducts.
  3. Engage the engine in stages, starting with "1". Introducing maximum thrust can cause a backflow effect to the room.
  4. Regular washing of the coarse filter or replacing the output filters in recirculation devices.
  5. Removing ventilation ducts only to designated shafts. If draft is changed, combustion products can enter neighboring rooms.

When washing the device, replacing filters or lamps, disconnect it from the mains. The possibility of electric shock cannot be ruled out.

Installation Rules

Rules for installing hoods over gas and electric stoves

When installing the hood, the following rules must be observed:

  • reliability of fastenings - 2-3 times higher than the calculated parameters of the weight of the devices;
  • distance from the sink - at least 50 cm;
  • height above the stove - 70 cm from the electric and 80 cm from the gas;
  • a separate outlet to turn off the device for maintenance;
  • horizontality necessary for the correct operation of the motor;
  • correspondence of the duct section to the exhaust pipe and its power.

It is necessary to integrate the equipment taking into account the strength of the cabinet, which is used as a supporting structure.

Advantages and disadvantages of hoods for the kitchen

Filters for hoods - consumables for which you need to allocate funds regularly

Benefits of installing and using a cooker hood:

  • elimination of unwanted odors;
  • removal of moisture, fats and smoke;
  • prevention of pollution on furniture, walls and ceiling from fumes:
  • Reducing the risk of gas poisoning in the event of a malfunction of the auxiliary heating boiler.

Cons of the decision to use the hood in the kitchen:

  • expenses for the purchase and installation of equipment;
  • regular replacement of filters;
  • quite a lot of noise at work;
  • time and effort to clean, wash and replace consumables.

Hoods are an important part of the ventilation system of housing, without which it is impossible to achieve a normal level of sanitary standards.

Key selection criteria

When choosing a hood in the kitchen, you need to focus on certain criteria that affect the level of comfort of living in an apartment or house:

  • power and performance;
  • degree of air purification;
  • the principle of operation of the product;
  • the cost of the device and its maintenance;
  • design;
  • manufacturer;
  • safety.

After evaluating and analyzing the information, you can make a decision and go shopping for certified points of sale.

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