RU210475U1 - BAKE - Google Patents

Abstract

The multifunctional oven is a collapsible structure containing a sequentially located ash pan, a furnace with a hole and a barbecue area, a partition between the barbecue and oven zones, an oven zone with a hole in the front part and thermal stones installed in it, a removable upper part, and the opening area in the furnace , bounded by its upper edge and the plane formed by the upper part of the kebab area, allow you to visually control the cooking process in the kebab area, holes are made in the back of the partition, a space is formed between the partition and the lower thermal stone, in the back of the oven zone above the planes of the thermostones, smoke exhaust holes are made, the removable upper part is the cover of the oven zone. The utility model makes it possible to increase efficiency while simplifying the design with the possibility of combining a barbecue and an oven for baking pizza, bread, etc. in one device, as well as providing the possibility of simultaneous barbecue and baking of pizza, bread, etc.

Description

The utility model relates to the field of the food industry and public catering, namely to multifunctional devices for outdoor cooking, including a barbecue and an oven, incl. pizza oven, bread oven.

A multifunctional outdoor cooking unit is known from the prior art (see patent RU 2628896 C2, published on August 22, 2017), containing a barbecue chamber and an oven, the barbecue chamber being mounted on a frame, and an oven with an exhaust pipe located above the barbecue chamber. At the same time, the oven is installed on the barbecue with the possibility of movement by means of a connection system that allows changing its position relative to the barbecue by moving the specified oven between the working position above the barbecue and the position that provides access to the working surface of the barbecue.

The disadvantage of this solution is the impossibility of simultaneously baking in the oven and barbecue due to the fact that the oven, when using the barbecue area, is turned at an angle to this area. This design does not allow efficient use of the combustion energy of fossil fuels (firewood, etc.), thereby significantly reducing the efficiency of such an installation.

Also known from the prior art is an outdoor oven (see https://www.stadlermade.com/products/outdoor-oven/), which is a collapsible structure. This oven contains two connected chambers, while in the lower chamber there is a structural element located in its upper part at an angle for efficient convection of warm air. Moreover, baking stones are located in the upper chamber to absorb heat, and holes are made in the rear part to remove smoke into the environment.

The disadvantage of this solution is the absence of a barbecue area, thus, the combustion energy of organic fuel (wood, etc.) is spent only on baking and is dissipated through the baking stones and the body of the upper chamber of the oven into the environment, which, in turn, significantly reduces the efficiency use of the energy of combustion of organic fuel (firewood, etc.).

The objective and technical result of this utility model is to increase the efficiency and expand the arsenal of technical means.

Structurally, the claimed multifunctional furnace is a collapsible structure containing a sequentially located ash pan, a furnace with a hole, a partition and an oven zone with a hole in the front part and thermal stones installed in it, a removable upper part, while a space is formed between the partition and the lower thermal stone, in in the rear part of the oven zone, above the plane of the upper thermostone, smoke exhaust holes are made, while the removable upper part is the cover of the oven zone, characterized in that a barbecue zone is located between the furnace and the partition, while holes are made in the rear part of the partition.

This furnace is clearly illustrated in the drawings, where:

in fig. 1 shows the design of the furnace;

in fig. 2 shows the convective distribution of warm air.

Fig. 1 illustrates an advantageous implementation of the claimed utility model, consisting of:

prefabricated building (1);

ash pan (2);

furnace with a hole (3);

barbecue area (4);

partitions between the barbecue and oven zones with holes (5);

oven zone with a hole in the front (6);

installed thermal stones (7);

smoke outlets (8);

removable top (9);

the area of the hole in the furnace, limited by its upper edge and the plane formed by the upper part of the barbecue zone (10);

planes of thermal stones (11);

the area of the front part of the barbecue area (12);

the space between the partition and the lower thermal stone (13).

Due to the presence of an ash pan, ash deposits do not remain on the lower part of the furnace, i.e. these deposits will not prevent the transfer of heat from the flue gases to the lower heating surface of the furnace and, therefore, the thermodynamic resistance of the furnace will not increase.

Thanks to the opening area in the furnace, which allows you to visually control the cooking process in the barbecue area, it became possible to simultaneously control the process of baking and barbecue.

Numerous studies and tests have shown that with a height and width of a multifunctional oven equal to 850 mm and 370 mm, respectively, the optimal ratio of the area of the opening in the furnace, limited by its upper edge and the plane formed by the upper part of the kebab zone, to the area of the front part of the kebab zone, is 0.2-0.4.

With such ratios, the user can freely control the cooking process in the barbecue area with minimal loss of convective heat through the hole.

Due to the presence of holes in the rear part of the partition installed in the oven zone of the thermostones, the formation of a space between the partition and the lower thermal stone, the location of the smoke outlets in the rear part of the oven zone above the planes of the thermostones, the location of the hole in the front part of the oven zone, as well as the implementation of a removable solid upper part in in the form of a cover of the oven zone, uniform convective heating of the entire volume of the oven zone became possible.

This effect was achieved due to the fact that the convective flow of heated air passing through the openings of the partition collides with thermal stones and begins to twist, followed by passage through the entire volume of the oven zone.

After passing the entire volume of the oven zone, part of the convective flow exits through the front opening of the oven zone, and part enters the space between the thermostone and the removable solid upper part and passes through the entire volume of this with heating and subsequent heat discharge through the smoke outlets.

Numerous studies and tests have shown that when one portion of firewood is burned (a full load of firewood with a flame height less than the plane formed by the upper part of the barbecue area), a temperature of 400 ° is maintained for 25-30 minutes.

When smoke appears, its removal through the opening of the oven zone and the smoke outlets is carried out by the same process as the removal of the convective air indicated above.

In the event of a sharp rise in temperature and / or smoke, the upper removable part is removed and a rapid drop in temperature and smoke occurs due to the increased contact area of the external environment with the convective (smoky) air flow.

In this case, the temperature and the level of smoke can be controlled, for example, by appropriate sensors.

The claimed utility model works as follows.

Firewood is placed in the furnace and set on fire, the ash falls into the ash pan, the released energy heats the air and makes barbecue, heated air convectively enters the oven zone and carries out the baking process, temperature and smoke control is controlled by sensors and visually and, if necessary, by opening the removable upper part .

The components of the claimed device can be manufactured, for example, by stamping, welding, casting, etc., and assembly is carried out, for example, by means known from the prior art (bolts, nuts, wrenches, etc.).

It should also be noted that the sign "plane" used in this application means not only a surface or figure, but also a mental continuation of any surface, which can be both flat and curved, i.e., in particular, have elevations and recesses.

This design allows:

simultaneous barbecue and baking;

abandon the exhaust pipe, which significantly reduces the mass of the structure and the number of elements in it and, therefore, leads to its simplification;

increase in efficiency due to the uniform heating of the oven zone, the exclusion of an increase in the thermodynamic resistance of the furnace zone, as well as the use of the energy of the combustible fuel (wood, etc.) for simultaneous barbecue and baking.

Claims (1)

Multifunctional oven of collapsible design, containing sequentially located ash pan, furnace with a hole, a partition and an oven zone with a hole in the front part and thermal stones installed in it, a removable upper part, while a space is formed between the partition and the lower thermal stone, in the rear part of the oven zone above the plane of the upper thermal stone there are smoke outlet holes, while the removable upper part is the cover of the oven zone, characterized in that a barbecue zone is located between the furnace and the partition, while holes are made in the rear part of the partition.

Images