The smell of food is good in the kitchen. The cozy living room smells of flowers, perfume, but not fries. Cooker hoods can perfectly trap heat, steam and fumes, or burn electricity for nothing.
All kitchen hoods are divided into two categories: with connection to a ventilation shaft and stand-alone. A well-chosen hood, correctly connected to the ventilation shaft, will not disappoint the owners.
Types of kitchen hoods
The following types of cooker hoods are distinguished for installation:
- hinged (standard and flat) - mounted under a shelf or wall cabinet above the stove;
- embedded - are built into the cabinet body or a specially constructed decorative box;
- wall - they are hung directly on the wall, differ in a variety of designs;
- corner - for installation in the corner of the kitchen;
- insular - are hung on the ceiling above the kitchen "island".
Functionality of ventilation hoods
Hood operating modes:
- Outflow... Cooker hood with outlet for ventilation of the entire volume of exhaust air. It connects to a ventilation shaft or takes air outside through a special hole in the wall. Hot humid air and unwanted aromas are removed from the apartment, ensuring a 100% effect.
- Filtration... These are hoods without a connection to ventilation. Air filled with vapors and aromas of the kitchen enters the filter and, purified, is sent back. Filters are located inside the case, 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 decreases significantly.
Filtration of a hood for a kitchen with an outlet is carried out with synthetic winterizer, carbon, paper, non-woven, acrylic or metal filters.
A thick carbon filter reduces engine power.
The rules for installing the hood without venting into the ventilation, as well as how to properly connect the hood to the ventilation, read below.
Extraction capacity
This indicator primarily affects the quality of indoor air handling. The capacity determines the volume of air passed in 1 hour.
According to sanitary requirements in the kitchen, it is necessary to provide 12-fold air exchange.
We use the formula:
R x V x 12 x 1.3
Where R - kitchen area,1,3 - equalizing coefficient,12 - the frequency of air exchange,V - the height of the room.
Choose models with a power higher than the design by 10 - 15%.
Hood noise level
In modern homes, kitchens are adjacent to bedrooms and living rooms, so noise levels are very important. The constantly humming hood will cause headaches and fatigue.
The more powerful the hood, the more noisy it works. But responsible manufacturers (for example, BOCSH, Siemens, Samsung) manage to achieve fairly quiet operation with impressive performance due to the special shape of the blades, the installation of twin fans and additional sound insulation.
For reference, noise levels in different rooms, in decibels:
- in a quiet room - 30;
- the whisper of a man - 35;
- the best hoods or quiet music - 40;
- human speech at a distance of 2.5 and noise of average quality hood - 50.
Do not purchase a hood with a noise level higher than 50 decibels.She will disturb the tenants of the apartment. The best hoods emit a noise of 44 decibels, and at 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 air 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, they turn on the light when the hostess approaches.
Touchscreen control panel and display. Convenient, but you can get by. The display shows the operating mode, and the touch panel is much easier to keep clean than protruding mechanical buttons or sliders (sliders).
Hood installation rules
Installation and connection of a kitchen hood to ventilation requires knowledge of a number of rules:
- the body is hung only on a level, with careful observance of the horizontal;
- the distance between the electric hob and the hood must 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 traction;
- 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 cooker hood is vented, it is advisable to install a backdraft prevention valve.
Before connecting the cooker hood to the ventilation, read the instructions for it.
Connecting the hood to the ventilation riser
Before connecting the hood to the ventilation, take care of all the necessary accessories. To connect a kitchen hood with a vent to ventilation, use a corrugation or smooth round PVC air ducts with elbows. The second option is preferable, as it creates less air resistance, the smooth inner surface is easier to clean. The pipe diameter is not less than 120 mm, it is selected according to the outlet section of the hood. The hood is equipped with an adapter for fixing the air duct.
The air duct should 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 secure the end of the air duct in the ventilation duct.
The connection of the cooker hood to the ventilation will not block the ventilation hole if a special grill is installed.
The throughput of general ventilation is from 110 to 140 cubic meters of air per hour. The extraction capacity can be 180 - 700 cubic meters per hour.
Before putting the hood into ventilation, consider the possibility of leading the air duct into a specially made hole in the wall. Otherwise, the operating device may cause the rod to "overturn". A particularly dangerous phenomenon in homes with gas heaters, leading to carbon monoxide poisoning.
The air ducts are sealed, and a check valve and a mesh are installed at the outlet.
After the hood is brought out into ventilation, it is connected to the mains. Requires a standard voltage of 220-240 V and a frequency of 50 Hz. Sometimes the outlet is grounded to eliminate 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 will be able to 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 power supply. And only after a successful first turn-on, they put on a protective casing.
A video on how to connect the hood to a common air duct without disturbing the ventilation of the apartment:
