Convection ovens. Device and work. Application and how to choose

Application area

The most widespread professional heating equipment based on the convection effect is in cooking. There are also industrial models, whose length, width and height allow to accommodate objects of different sizes and dimensions. The bulk of convection ovens are created for the purpose of cooking hot dishes and baking in the kitchen. An additional function of the electric grill is provided by powerful heating elements (tubular electric heaters) located on the upper and lower inner panels of the heating chamber.

Thanks to the adjustable steam humidification, the combi steamer also becomes a large steamer. The wide range of applications of the convection oven in combination with the impressive capacity of the inner chamber has served this type of equipment well: combi ovens from popular manufacturers can be found in the kitchen of any large restaurant or dining room.

Principle of operation

The principle of operation of the airfryer is based on the effect of convection: this is the process of heat exchange between directed flows of gas (in this case, air). It is achieved by a powerful fan on the rear wall of the heating chamber and 3-4 heating elements at the top and bottom. Most of these devices have a humidity control function, which helps to steam food, simulating the process of stewing, boiling, and a water bath. If the corresponding switch is set to "zero", the standard grill mode will turn on, leaving very dry hot air in the oven, perfect for baking.

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Convection ovens

Different companies produce different models of combi ovens. Compact devices powered by 220V voltage are intended for home use. Their equipment is scarce, there are few additional functions. Professional machines are distinguished by a more durable body, an extended list of modes and are additionally equipped with removable trays and cleaning kits. They operate from industrial sockets with a voltage of 380V, have a diode backlight, and an electromechanical interlock function. The following manufacturers are famous for their oven models:

Unox;
Gemlux;
Smeg;
Apach;
Tecnoeka;
Abat;
GARBIN;
Venix;
Vortmax.

Unox

Find out what a self-cooking convection oven is with products from Unox. The software of the combi steamer has a flexible system for adjusting the cooking method. The cycle of heat treatment can be composed of 6 stages with different configurations of temperature, humidity:

model name: Unox XEBC-16EU-EPR-S;
price: 621,000 rubles;
characteristics: 16 levels with intervals of 80 mm, LxWxH 1043x882x1866 mm, rated voltage 380V, power 35kW, temperature limit 260 degrees;
pluses: large capacity, self-cleaning function, 256 slots for saving cooking programs;
cons: not found.

The minimalistic professional convection oven stands out for its increased safety system. The reinforced locking mechanism will not open until steam is released through a special sluice. This precaution is great for preventing accidents in the kitchen:

model name: UNOX XV 593;
price: 120,000 rubles;
characteristics: 7 levels with an interval of 80 mm, dimensions 860x882x930 mm, 380V, 10.3 kW, maximum temperature 260 degrees;
pluses: flexible adjustment of cooking modes, safe magnetic locking mechanism;
cons: strongly shifted center of gravity.

Gemlux

The convection kitchen grill opens up new possibilities in the culinary field.Choose from 11 modes or use flexible settings to create your own unique dish. A built-in probe is available for even more control over the heat treatment of food:

model name: Gemlux GL-OR-1500;
price: 7500 rubles;
characteristics: household convection mini-oven, 1.6 kW, 220V, 40-230 degrees, 11 modes;
pluses: small size, non-stick coating on the walls;
cons: cools down for a long time.

A small household combi steamer meets the highest protection requirements. Reinforced heat-resistant glass does not heat up on the outside during cooking. Adjusting the power of the rotary fans gives more control over the convection effect, which is the most important part of the grill mode:

model name: Gemlux GL-OR-1536
price: 9000 rubles;
characteristics: mini-grill with rotary fans, power 1.5 kW, 220 / 380V, 6 heating elements, diode lighting, double glass;
pluses: good protection against external heating;
cons: not found.

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Smeg

The Smeg combi oven is well suited for use in the kitchen of a small restaurant or cafe. The small price with excellent quality fully justifies the purchase of such equipment for a small business in the catering sector. Low energy consumption further reduces kitchen maintenance costs:

model name: Smeg ALFA43GHU;
price: 55,000 rubles;
characteristics: 4 levels of baking trays, dimensions 602x537x584 mm, 3 kW, 380V;
pluses: sensitive rotary switches with fixation of the set value;
cons: no built-in probe, the timer is only designed for 60 minutes.

The large industrial convection oven offers a wide range of possibilities for the chefs who use it. A variety of operating modes, flexible setting of heat treatment processes and the function of step-by-step cyclic cooking turn this model into a full-fledged kitchen worker:

model name: Smeg ALFA241VE
price: 183,000 rubles;
characteristics: 6 levels of pallet installation, dimensions 872x810x805 mm, 400V, 8.3 kW;
pluses: increased temperature limit of 280 degrees, three-layer protective glass, mechanical locking mechanism;
cons: heavy weight (113 kg), non-standard requirements for the voltage of the mains.

Apach

A small convection oven for a restaurant kitchen can serve as a supporting role when the rest of the ovens are busy. The presence of the stage-by-stage cooking mode opens up even greater possibilities when using this oven. Set it up for heat treatment with a change in humidity and temperature, and then the oven will cook the food itself:

model name: APACH AD46M;
price: 66,000 rubles;
characteristics: switchable voltage modes 220/380 V, dimensions 800х700х580 mm, manual control of steam supply;
pluses: light weight, the presence of a probe, the oven adjusts to the power grid;
cons: a small number of levels under the baking sheets.

A tall and narrow convection cabinet designed for large volumes of products is the most necessary thing in the kitchen of a dining room, restaurant or large cafe. The operating temperature range of the device compares favorably with other models with an increased upper limit. Use the minimum settings if you need a large steamer, and the maximum settings to turn on the pizza oven mode:

model name: APACH A9 / 10DHS;
price: 180,000 rubles;
characteristics: ten-level guides for pallets, external dimensions 920x760x1075 mm, 400V, 13.5 kW, adjustable convection power;
pluses: flexible adjustment of the operating mode;
cons: shifted center of gravity.

Tecnoeka

Kitchen appliances from Tecnoeka are designed specifically for use on the territory of large catering establishments designed for large production volumes.The software of the combi steamer has a flexible system for adjusting the cooking method. The heat treatment cycle can be composed of 8 stages:

model name: TECNOEKA EKF 1064 TC touch control;
price: 280,000 rubles;
characteristics: 10 levels of pallet installation, external dimensions 935x930x1150 mm, 380V, 16.5 kW, improved thermal insulation for safe use;
pluses: flexible setting of cooking modes;
cons: heavy weight, unregulated locking mechanism.

A large combi steamer with an increased operating temperature range will become indispensable helpers in the kitchen of a restaurant or large dining room. Program the model to prepare food on its own in several stages, and do other things yourself:

model name: Tecnoeka KF1010 EV UD-GA;
price: 340,000 r;
characteristics: 12 guide lines for pallets, external dimensions 965x850x1250 mm, 380V, 23.5 kW, temperature regime 50-270 degrees;
pluses: setting up a four-stage cooking in a recipe, three powerful fans;
cons: great price.

Advantages and disadvantages

Benefits:

no need to use electricity (except electrical);
high level of efficiency, more than 80%;
it is possible to control the level of combustion;
there are options for heating up to 100 and even more cubic meters on sale;
can be used for a house, a summer residence, a hangar or a change house;
long operating time from one tab;
high level of efficiency on any fuel;
possibility to purchase an option with a cooking panel.

Disadvantages:

some stoves can emit hazardous combustion products and are suitable for installation in non-residential areas only;
if you want to install it in a residential building, then it will be difficult to coordinate such an installation with firefighters;
ash escapes through the pipe and pollutes the surrounding area.

How to choose a convection oven

Before buying, be sure to find out how the airfryer works so as not to buy an unnecessary thing for several tens of thousands of rubles. Remember that this kind of equipment is more suitable for a professional kitchen than for home use. In order not to be mistaken in your choice, pay attention to the following characteristics of the purchased equipment:

Temperature limits. A standard combi steamer must have a spread of at least 200 degrees, be able to cook any dish. Consider models with 45-260 degree boundaries.
Locking mechanism. A professional airfryer is often equipped with an electromechanical or magnetic lock that prevents the door from opening under certain conditions. Remember that a stream of steam or air with a temperature of 200 degrees or more causes severe burns to the skin, mucous membrane of the throat, and lungs.
Equipment. Industrial equipment is often equipped with more trays than the number of trays inside the heating chamber, so that the distribution of food between the tray and the oven is easy.
Voltage. Even a standard mini-oven with convection can be designed for industrial sockets with a voltage of 380 V. At home, such equipment will not turn on at best.
Programming. Some models can be fully programmed for self-cooking in several stages, differing in humidity, time and temperature settings. Like a smart home multicooker, this technique can turn itself on on a timer or at a certain time to make you a hot breakfast or warm up lunch or dinner.

Views

There are several types of such stoves: metal, cast iron, brick.

The first type consists of steelthat is able to withstand high temperatures. Such an oven heats up the room very quickly, but the layers of metal are extremely thin and the heat quickly disappears. For the best effect, use a stainless material. Another weakness of this design is that its seams can burst when heated, it all depends on the quality.
The second option consists of cast iron... They are an excellent additional source of space heating. These devices are very compact and can be easily installed in any part of the house. A chimney is installed on it, which goes outside the room, removing combustion products. Warms very quickly and effectively.
The third is brick ovens, they are the most popular and reliable. Their chimney has a serpentine shape, which makes it possible to rationally preserve the combustion product, which is a source of heat. Such a furnace heats up slowly, but the brick itself retains heat for a very long time. They are very versatile and can be used as a fireplace or as a cooking place. Accordingly, the price for it is higher.

What are convector ovens made of?

It usually consists of the following elements:

The firebox is the place where the heating material (firewood) is burned.
Ash pan is a place where combustion product (ash) accumulates.
A grate - is a metal grate on which coals are placed.
Kamenka is a place for sauna stoves where stones lie.
Chimney - serves as a device for removing combustion products.
Features and disadvantages.