Telescopic hood or slider hood for the kitchen: what is it?
This device in a modern kitchen is not a whim, but a necessity. A telescopic hood, like a dome hood, normalizes air exchange in the room, eliminates excess humidity and food odors. Over time, ventilation becomes clogged and loses efficiency, so hoods are an additional means of air purification.
During operation, the flat and compact model slides out of the housing.
Among the variety of devices, the telescopic hood or hood - slider is distinguished by its design.
Hidden – is it good or bad?
A modern telescopic hood has a number of undeniable advantages. The shortcomings are minor and relate more to secondary characteristics.
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Principle of operation
There are several types of hoods. Each of them has different features and operating principles.
Outlet or inlet
The device does not have the function of self-cleaning air, but only removes contaminated air. The supply hood must be connected to the ventilation duct using an air outlet pipe made of corrugated material (in most cases).
- This type of hood is connected to the general ventilation system in the building.
- It is necessary to have an air duct through which the used air flow exits into the general ventilation system.
- Fresh air masses penetrate into the room naturally (through windows or doors), or from other rooms.
- To prevent contaminated air from entering the kitchen again, it is recommended to install anti-return valves.
It is important that there is an individual ventilation duct. If it is not there, then the air is vented directly to the street, outside the building.
Experts advise that before connecting the device to a general ventilation system, carefully study the performance of the latter.
Filtering or recirculating
Recommended for users who do not need a high power hood. The operating principle of these accessories is as follows: first, the contaminated air flow penetrates the filtration system, is cleaned there, and then returns cleaned to the kitchen. In case of heavy contamination, the system may not be able to cope with large volumes of used air masses. About kitchen design in 10 sq. m. read here.
The internal structure of the cleaning system has a carbon filter, which allows you to eliminate unpleasant kitchen odors, soot, and smoke. It is not cleaned or restored from dirt, but must be regularly replaced with a new one.
External filters trap large particles of oil and grease. The devices are made of high-strength metal and can be washed and cleaned when heavily soiled.
Usually this type is equipped with a good motor. Suitable for kitchens in which the ventilation duct is located at some distance from the hob. It is recommended to install recirculation models in old housing stock where ventilation is not efficient enough. This article will tell you about sliding doors to the kitchen.
When purchasing a hood, make sure that filters suitable for this model are also available.
Dimensions: 50 and 60 cm
The height of a telescopic hood often exceeds 40 cm. Therefore, the structure is almost always mounted in hanging cabinets, and only the retractable slider panel remains visible. Before starting installation work, you should read the instructions, which describe in detail the proposed cabinet sizes or free space parameters.
In order for the exhaust device to successfully cope with its tasks, it is necessary to understand the dimensions. The main emphasis should be on the parameters of the hob, the standard width of which varies from 50 cm to 100 cm. Suitable parameters for hoods are also offered: 50, 60, 90 and 120 cm. Read about removing stains from towels here.
The dimensions of the hood must match, according to regulations, the area of the hob or be larger than it.
If the dimensions are set smaller, then the equipment will not cope with its functions of eliminating polluted air - a certain mass will spread further into the rooms. When the width is greater, then all cooking odors and contamination will be completely eliminated.
Not only the transverse dimensions are taken into account, but also the distance of the combined slab from the hood. According to established SNiP, it must be at least 75 cm.
Additional functions
- Models differ in the way they are controlled. The classic is the push-button version. Slider speed control is installed in more modern devices. In operation, preference is given to a sensor hood with a screen, and the equipment is convenient at the stage of cleaning from dirt;
- kitchen hoods can be controlled remotely: using remote controls or voice;
- automation and manual control are comfortable if a slider model is installed or the equipment is mounted with a certain angle of inclination;
- horizontal and vertical hoods are made from a variety of materials, ranging from wood, copper and ending with chrome steel;
- The sizes should be chosen based on the dimensions of the kitchen: small compact models look harmonious in small rooms, and large units in large ones.
Functional features of a retractable hood
A retractable (telescopic) kitchen hood is a flat unit, which is “hidden” in the kitchen furniture when not in use. Before turning on, a special panel slides out and the area of the device doubles.
We recommend that you read: Calculation of a natural ventilation system for a home
The vast majority of models of retractable kitchen hoods operate in filtration mode. They collect rising vapors and gases from the hob and drive them through themselves, subjecting them to two-stage cleaning. This hood can be built into a wall cabinet or countertop.
Note! If the working area of the hood is smaller than the hob surface, then the device is physically unable to catch all contaminants.
There are telescopic models that require connection to the general house ventilation network. They work using the classic method - they remove polluted air from the room into the atmosphere.
Built-in performance calculation
To quickly make the necessary calculations, you should use this calculation option.
P = S * H * 12
P – power indicator
S – kitchen area
H – ceiling height
12 – air exchange coefficient, according to SES standards
Additional parameters are also taken into account: the expected degree of contamination, type of exhaust device, room layout.
This calculation is presented for a kitchen area of up to 40 m2; it allows you to calculate the most optimal hood power.
Only competent installation of exhaust equipment and correct installation of supply ventilation in combination affect the quality of indoor air. According to the rules and regulations, a hood cannot replace ventilation.
Calculation example
Below is an option for calculating the power of an exhaust device for a kitchen with an area of 12 m2. Let's use the formula.
- S (area) of the kitchen – 12 m2;
- H (ceiling height) – 2.7 m;
- live – 3 people;
- electric stove available (cooking 3 times a day);
- air duct available;
- coefficient for electric stove – 1.5;
- air exchange – 12 times.
Calculation example:
(3*4)*2.7*12*1.5 = 583.2 m3/h
For a kitchen with such parameters, you need an exhaust system with a capacity of approximately 600 m3/h. The range of models on the market is widely represented, so finding suitable equipment will not be difficult.
The best retractable
Three hoods are offered that are considered the most effective. The equipment has positive reviews, quality certificates and licenses. This link will tell you how to choose the right knives for the kitchen.
Hansa OKC 6726 IH
The device is distinguished by its original design and reasonable cost. Other characteristics.
- Width – 43 cm, height – 143 cm, depth – 47 cm.
- Power – 160 W.
- Air channel diameter – 150.
- Operating mode – drainage/circulation.
- Productivity m3/h (maximum) – 620.
- Control type – electronic.
- Speeds – 4 pcs.
- Noise – 69 dB.
- Lighting – halogen (can replace lighting).
- The filter is grease.
The cost of the model is 12,900 rubles.
Disadvantages: the lamps can get very hot, the touch buttons are poorly lit and are sometimes glitchy.
Kronasteel LINA 600 white 4P-S
The cost of the model is slightly higher than average, but the buyer receives a reliable, quiet and productive device. Reviews about this hood are only positive.
- Width – 60 cm, height – 133.2 cm, depth – 43.6 cm.
- Power, W – 198.
- Air duct diameter – 150.
- Operating mode – drainage/circulation.
- Productivity, m3/h – 800.
- Control type – electronic.
- Speeds – 4 pcs.
- Noise – 40 dB.
- Lighting – LED.
- The filter is grease.
You can install a carbon filter and use recirculation. Speed 1 and 2 are sufficient for cooking. The disadvantages include the presence of an additional transformer for lighting, which will take time to replace if it breaks, and the power cord is too tightly clamped by the protective casing during installation. This material will tell you which laminate flooring is best for the kitchen.
MAUNFELD Tower C 60
The device is recommended for kitchens up to 20 m2. Undemanding and stylish, the work surface is made of glass, located at an angle, which is convenient, there is additional lighting above the cooking area, and there is a check valve.
Cost – 9700 rub.
- Width – 50 cm, height – 92 cm, depth – 31 cm.
- Power, W – 250.
- Air duct diameter – 120.
- Operating mode – drainage/circulation.
- Capacity – 520 m3/h.
- Electronic control
- 3 speeds.
- Noise – 54 dB.
- Halogen lamps.
- Filter type: grease filter.
Disadvantages: it is inconvenient to look at the control buttons if you place the hood at a distance of 45 cm (according to the instructions), the slightest dirt is visible on the black surface, it makes a lot of noise at speed 3.
Installation rules
Dimensions for retractable models are not the main criterion, since they are quite compact. Wall-mounted models are rarely installed openly; more often they are built into kitchen furniture. In an open installation, air ducts and electrical wiring are hidden in plasterboard boxes.
We recommend that you read: Ventilation ducts made of plastic pipes
Safety standards require that the hood be installed no closer than 65 cm from gas burners. For an electric stove, this distance is reduced by 10 cm.
Air ducts for connecting the hood are purchased separately. Equipment manufacturers do not provide them. When installing air ducts, inclined sections and long horizontal hoses should be avoided. The larger the cross-section of the air channel, the more efficient and silent the operation of the device.
