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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Metal products for heating
The basic advantage of such designs is the rapid transfer of heat to the ambient air, although cooling also occurs in a short time. The decisive factor can be considered a low price, thanks to which the products successfully compete with brick counterparts. During operation, there is a risk of getting burned if the case has not been protected with other materials.
Basic classification methods
First of all, all products can be divided according to the material of manufacture. On modern markets, there are conventional or heat-resistant steel. The choice should primarily be based on operating conditions, since the characteristics of metals are completely different.
Another classification option takes into account the location of the product. Particularly popular are corner stoves for summer cottages, which do not take up much space, therefore they are more suitable for small rooms. The choice in this case depends on the design decision.
The most important factor is the way the system is designed, which is explained by the special effect on efficiency.
Reference! Modern ovens for summer cottages with a hob (power from 12 to 15 kW) are made using a channel system of partitions to increase the heating temperature of the panel.
Most popular representatives
Thanks to the competent design, air injection flows without the use of additional devices. The temperature difference at the entrance and exit of the streams leads to the transfer of heat in the gases. Convection ovens for a summer residence of this type allow you to achieve high efficiency.
Homemade systems
If necessary, a metal structure for heating can be made by hand. Of course, it is hardly worth pretending to create a creation that is distinguished by aesthetic data, but it is quite possible to build a neat structure, especially since with a lack of budget, practicality plays the main role.
At the initial stage of work, special attention is paid to the preparation of the elements required for assembly. As for the tools, the list is not so long, because homemade stoves for summer cottages are made using a grinder and a welding machine.
In a pipe with a diameter of at least 40 mm, two rectangular holes are first cut. One of them will be a firebox, and the other - a blower. A chimney hole is created in the upper part. The grate is made of 6 mm thick wire.
Two circles are cut from the steel sheet, the diameter of which will correspond to the width of the pipe. They are welded on the top and bottom to form a sealed structure. At the last stage, the doors are installed from cut-out pieces using steel hinges.
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 a gap of 80 mm, dimensions 860x882x930 mm, 380V, 10.3 kW, maximum temperature 260 degrees;
- pluses: flexible setting 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.
Steam convection
The steam convection oven deserves special attention. You should learn the main points about it.
- This is an expensive piece of equipment, which is a kind of convection ovens;
- The main feature is the complex design and the ability to control the humidity level inside the stove;
- Due to the high cost of such a model, most buyers prefer conventional convection ovens with a steam humidification function. Steam convection ovens are the prerogative of large industries;
- The device is distinguished by the functionality of a fan, which, in addition to air, supplies water. It is sprayed inside the working area, turning into steam;
- The steam convection function is important for industries that are engaged in the production of baked goods;
- There are manual and automatic models of steam convection ovens. In the former, moisture is supplied by pressing a special button on the panel, and automatic devices do not independently control the moisture level, relying on the type of food being prepared. They simply dispense a certain amount of water with the machine. Therefore, such systems are imperfect;
- Due to steam convection, the dishes do not dry out, a beautiful glaze forms on the surface of the baking, preserving all the useful properties of the product under the crust.
Convection ovens have their undeniable advantages, allowing them to be used for the benefit of the quality of products. Whether you need a similar stove at home or want to start your own production, always choose high quality convection devices.
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 such equipment is more suitable for 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.
Summarizing
In conclusion, it is proposed to take a look at the table, which reflects the comparative characteristics of the two materials in some parameters. The assessment was carried out on a five-point system.
After choosing one of the two options, renting a diesel generator for a summer residence will no longer be required, which will save the family budget. For a more detailed consideration of the topic, a visual instruction was created. You can familiarize yourself with it if you watch the video in this article.
The home convection oven is used for baking pastries, casseroles, cookies, various dishes. Food is cooked at low temperatures due to constant air circulation inside the chamber.
Types and types
The principle of operation for such furnaces is the same, but there are several types of this design, which differ in a number of characteristics.
Furnace type
- Wood burning (solid fuel). If this is a brick version, then it is a fairly large structure that is laid out in houses on a separate foundation. Their design initially provides for convection channels next to the firebox. In fact, an empty space is left around the firebox and an opening from the bottom through which cold air will be drawn. If these are metal structures, then they will not have much weight and require the installation of a foundation. They are already completely ready-made, so the buyer only has to choose the appropriate option in terms of the thickness of the metal layer, as well as the dimensions of the structure.
- Gas. There are also two options available here. It can be a stationary convection oven for cooking and heating the room. It is installed in a selected place in the room in such a way as to heat the house. There is also an alternative in the form of a special fireplace that can be mounted in any room. This design works from bottled gas, but it is also possible to connect the main gas pipeline to this design.
- Electric convection oven. One of the most common oven options. They are also called electric convectors, which can heat a room very quickly and efficiently. The advantage of this type of construction is the possibility of its transportation due to its compact dimensions and availability of mains power supply.
Material
The convection oven can be made of materials such as:
- Cast iron. It is a common material from which both the external and internal parts of the structure can be made. Thanks to this material, its high performance and attractive appearance are ensured.
- Hardened metal. It is also a popular solution for prefabricated furnace designs. It is important that the thickness of the metal sheet in places that are subject to the greatest thermal stress is not less than 4 mm. In this case, the product will serve the customer for many years.
- Brick. This is the most difficult option, which requires independent laying and does not have ready-made solutions. That is why here it is worthwhile to carefully consider the issues of laying the foundation. It is also important to correctly calculate the dimensions so that its capacity is sufficient to meet the needs of several selected premises.
Convection modes
In order to ensure an even and constant flow of heat energy from all sides of the oven, forced convection is used.
The fan effectively creates an even and continuous blowing of hot air to the food on the baking sheet. This prevents them from burning or baking. In addition, convection helps to create a beautiful golden brown crust on cakes and other baked goods.
In simpler models of electric stoves, ordinary fans of a simple design are installed, the task of which is to force air to move inside the cabinet. In more complex units, the fan can be additionally equipped with a heating element, which is more efficient.
Ovens can be equipped with heavy-duty fans that quickly create a dense, even flow of hot air. This makes the baked goods juicier and softer on the inside.
There is also damp convection, during which steam is generated inside the oven. As a result, baked goods do not dry out, pies and cakes rise well. Plus, the steam effect saves oil and helps you cook healthy foods without over-frying.
Basically, electric models of ovens are equipped with different convection modes.In gas ovens, this function is much less common. This is due to the fact that the gas model has its own specifics in the design. Open fire in gas burners creates certain difficulties for creating forced circulation of heat.
