Rotary kiln: specifications and reviews

Far from each of us in our life encountered a rotary kiln. Nevertheless, what we manufacture is used every day. The fact is that bakery products are baked in such devices, and their importance is hardly appreciated. This equipment belongs to a professional, so the price for it is considerable. However, in exchange, it becomes possible to obtain high-quality, evenly baked bread or a confectionery product. Let's talk in more detail about what a rotary kiln is.

General information

You probably noticed that in supermarkets and shops there are bakery products for every taste. They are made from different types of flour, while the most unusual forms are used. However, much depends not only on raw materials, but also on the equipment in which this raw material acquired the final form. Of course, it is worthwhile to draw your attention to the fact that today there are a huge number of furnaces: convection, tunnel, vapor convection and others. All of them differ in design and price. We in this article will talk about what a rotary oven is. We can not say that such equipment is the most profitable and effective, but it is used quite often, so it makes sense to consider it.

Principle of operation

The first thing I would like to talk about is how exactly this furnace functions and what are its key differences from other species. In principle, the principle of rotation of the product in the chamber. This is achieved by using a special multilevel trolley. Each level is filled with blanks, which are evenly distributed over the space of the trolley. The latter rotates around its axis. It is noteworthy that modern rotary kilns allow to regulate the temperature inside the chamber, as well as the speed of rotation of the trolley. This is necessary for different types of bread and baking. Something fits on low temperature at high speeds, other bakery products - on the contrary. Uniform baking is provided by the intensive supply of hot air. To do this, install fans, and to heat the air - the fans. In all models, the working chamber is made of stainless steel. It is noteworthy that rotary baking ovens are prepared much faster than other types of devices. This is achieved by intensive blasting with hot streams and rotation of blanks in the chamber.

Rotational-convection oven: chamber dimensions and design features

Currently, there are ovens with different shapes of the working chamber. Two performances are most popular: quadrangular and octagonal. The first species is found most often, since such furnaces appeared first and are considered a kind of classics of the genre. They are easy to operate and have a more affordable price. But using the octagonal shape of the camera can improve the technology. In particular, this concerns the speed and quality of baking. But, most likely, if you give the consumer two loaves of bread made in different cells, it is unlikely that he will find any differences. As for the dimensions, the dimensions of the camera are more often made to order. Often, the consumer does not push away from the working chamber, but from the dimensions of the trolley. Performance in many ways depends on its roominess. For example, some rotary baking ovens allow the simultaneous use of several bogies. The number of trays to be installed is specified in the specification.

About the lining and insulation

It is extremely important to understand that the stove will be used daily for making food products. That is why it is preferable to use corrosion-resistant stainless steel. In this case, any surface that comes into contact with the product must be stainless. This increases the resource of the baking trays, as well as the trolley and the working chamber. Side, as well as rear surfaces are often made of heat-resistant steel, because they account for the highest temperature. True, an increased percentage of moisture, as well as periodic mechanical effects on painted panels lead to the fact that the paint is showered. For this reason, steel performance deteriorates and heat losses increase. That is why it makes sense to purchase a furnace with thermal insulation. The thickness of the insulation can be obtained from the company that produces the equipment.

Steam humidification in a rotary kiln

The first furnaces of this type did not have this function. For this simple reason, sometimes baked goods or confectionery products were somewhat overdried. But today, to produce a crispy and ruddy, but not rigid crust, steam humidification is used. This function is especially important for the preparation of confectionery products, for which drying is unacceptable. The program will automatically maintain the microclimate in the working chamber.

From all sides, such a rotary kiln is good. Price - this is its only significant drawback (approximately from 300 000 rubles and above). In addition, the steam generators do not tolerate the use of water with various mechanical inclusions, in particular hard water is adversely affected , so the use of humidifier filters will also be required. Do you need such a function or not? Here it is necessary to make a decision, depending on the range of baked goods. For the simplest products, it is not required.

Rotary electric oven: the principle of the trolley

The device that drives the trolley with workpieces into rotation is a hook. It is started by means of an electric motor, which is located in the upper part of the furnace. Most trolleys have wheels. This makes it easier to install and remove them. During rotation, the wheels rest on the bottom and rotate with the trolley.

Currently, manufacturers are increasingly offering a rotating surface. In this version, the wheels remain stationary. Such a solution is expedient only for large volumes of work with a high loading of the trolley. The reason is that the constantly rotating wheels will wear out and break down intensively. Ultimately, this will lead to downtime, and therefore, to losses. With small downloads, such a platform is not needed, especially since it is not cheap.

Furnace control

Currently, there are two main types of management: electromechanical and electronic. The first species is much more famous. Such management is very reliable, simple and clear to everyone. Nevertheless, there is no possibility of fine adjustment. For example, modern rotary kilns have such technical characteristics that allow you to cook with an accuracy of 1 degree. In this case, electromechanical control is not preferable. Electronics is much more accurate, and more popular. This type of control is equipped with a number of sensors, which allow full control of the process. The operator can change the humidity, temperature, fan speed and much more. This type of control is vulnerable to changes in temperature and high humidity, therefore, protective equipment, special sensors and alarms are installed.

Power Consumption

Considering the technical characteristics, we can not fail to mention such an important parameter as power. It should be noted immediately that this equipment is considered professional and usually has high performance, therefore, energy consumption is also great. But the power depends on the dimensions of the product, as well as the availability of additional equipment. For example, hoods, steam generators, as well as rotating floors significantly increase this figure. It is also worth noting that gas rotary kilns up to 60 kW require a permit for installation, as well as heating equipment. By the way, this parameter of power consumption is the biggest for such furnaces. However, also on sale there are electrical options for 95 kW or more. Such furnaces can accommodate 2 trolleys with a sheet size of 800 x 1200 mm, and the temperature in the chamber reaches 300 degrees Celsius.

Customer Reviews

Even large restaurants before consulting the furnaces consult with specialists. It often happens that equipment from a well-known manufacturer is not suitable for a variety of reasons. For example, some ovens may simply not pass through the doorway. But this problem is solved with electrical equipment, which is collapsible, in a completely different way things are with gas furnaces. A large number of positive responses has a rotary oven "Musson-Rotor" of a new generation (77M). Technical characteristics, according to consumers, are really unique. Here, and adjustment of programs during operation, and the possibility of using 10-step programs, and high stability of bearing units, and much more.

Conclusion

Many consumers recommend paying attention to the domestic company Voskhod. Rotary kilns from this manufacturer are very good. By the way, it is this manufacturer that produces the famous furnaces of the "Musson-Rotor" line. The technical characteristics of the equipment satisfy the needs of any bakery. The range includes furnaces from 30 kW to 97 kW. The temperature in the chamber is adjustable, and the volume of production can reach 2.5 tons per shift and higher. Of course, when choosing a particular model, you must be guided by your needs and the assortment of manufactured products. Sometimes it's better to buy a small medium-power oven with limited functionality and use it for a full, rather than expensive high-performance oven and use it only 50%.