CN108617719B

CN108617719B - Method for manufacturing oven for barbecue and oven manufactured thereby

Info

Publication number: CN108617719B
Application number: CN201710229549.1A
Authority: CN
Inventors: 韩成烈
Original assignee: Nogeoldae
Current assignee: Nogeoldae
Priority date: 2017-03-22
Filing date: 2017-04-10
Publication date: 2020-10-30
Anticipated expiration: 2037-04-10
Also published as: CN108617719A; KR101878935B1

Abstract

The invention relates to a manufacturing method of an oven for barbecue and the oven. The manufacturing method of the barbecue oven of the embodiment of the invention comprises the following steps: the method comprises the following steps that firstly, a support is prepared, and a baking tray and a stove with an opening part are arranged on the support; a second step of connecting a plurality of arc-shaped metal plates to form hemispherical inner and outer frames, and fabricating upper and lower molds by disposing the outer frames in such a manner that a space is left outside the inner frames; thirdly, arranging a lower die on the baking tray, stacking ALC bricks and loess bricks in the space between the inner frame and the outer frame of the lower die for filling, and injecting mortar for filling; a fourth step of combining the upper parts of the upper and lower molds manufactured in the second step after the lower mold is cured; a fifth step of stacking ALC bricks and loess bricks in the space between the inner frame and the outer frame of the upper mold for filling, and injecting mortar for filling; sixthly, standing and maintaining at normal temperature; and a seventh step of releasing the inner frame and the outer frame of the upper and lower molds to obtain the completed oven.

Description

Method for manufacturing oven for barbecue and oven manufactured thereby

Technical Field

The present invention relates to a method for manufacturing a barbecue grill (roaster), and more particularly, to a method for manufacturing a barbecue grill capable of roasting various food materials such as meat, fruits, vegetables, seafood, etc. by convection current of heat while maintaining a predetermined temperature by using charcoal in a closed grill, and a grill manufactured thereby.

Background

Unless otherwise indicated by the context, the technical matters described in the background section do not belong to the prior art in the scope of the claims of the present application, and the technical matters described in the background section are not necessarily regarded as the prior art.

With recent increased attention to health, the attention to diet has increased. Therefore, modern people pursue foods beneficial to the body, and in this trend, health foods are favored.

However, foods that are merely beneficial to the body are not actually continuously enjoyed by modern people who are accustomed to the tastes of various foods, and foods that are both healthy and excellent in taste are continuously enjoyed by people.

In particular, roast meat is a cooking method that can be seen everywhere around the world, and there are many foods eaten by roasting various parts of pork, such as streaky pork, fat intestines, and abomasum, with direct fire for korea.

However, since pork has relatively much fat, it produces much oil when barbecued, and if too much fat is ingested, it causes obesity. In addition, in pork fat, saturated fatty acid accounts for 40%, unsaturated fatty acid accounts for 60%, and various roasted duck meat, abomasum, fat intestines and the like also contain a large amount of saturated fatty acid. The saturated fatty acids described above are causative agents of various adult diseases, and if serious, serious diseases such as vascular diseases and heart diseases, which may lead to death, may be caused.

As a cooking device that can solve such a problem, a charcoal grill is most preferred.

In the currently developed charcoal grill apparatuses worldwide, the method using the loess oven grills the meat by four kinds of complex actions of convection heat, radiant heat, direct fire, smoking, etc. However, in order to generate convection heat or radiation heat, it is necessary to provide a material for storing and maintaining heat based on a stable heat source, a predetermined thickness, and a heat storage function.

In addition, in the conventional loess oven manufacturing process, since loess is applied after a metal mold is manufactured, a phenomenon of cracking of the oven due to a phenomenon that the metal mold is stretched under a high temperature condition is very prominent.

On the other hand, the carbon roasting methods known worldwide, such as Kebab, Shashlik, Asado, churasco, and Yakiniku, roast meat in a state exposed to normal temperature, and thus have a problem that the fat melted down during the process of roasting meat burns the heat and causes the meat to be burnt and blackened.

In particular, the burnt meat will generate carcinogens, and the blackened meat will generate environmental hormones such as dioxin.

In addition, roasting meat at temperatures of about 400 ℃ generally optimizes the taste of the meat, which is why roasting meat with charcoal is so pleasant.

However, although charcoal fire can maintain a heat source of about 400 ℃ for a certain period of time, it is impossible to secure the optimum meat flavor without adding charcoal after a certain period of time has elapsed.

In order to solve such problems, the present inventors have filed for "barbecue oven manufacturing process and apparatus" through korean patent application No. 10-2009-0090554.

The conventional technology described above relates to a manufacturing process of a barbecue oven, and the manufacturing process of the barbecue oven includes: a first step of cutting a loess brick formed in a predetermined size in half to form a wedge shape, applying vegetable gum on the surface of the cut loess brick, and drying the cut loess brick; a second step of coating loess on a disc-shaped iron bracket with a predetermined thickness, drying the coated iron bracket, and installing an iron furnace on the iron bracket; a third step of laying predetermined portions of the cut bricks, performing first plastering, and installing a furnace plate; and a fourth step of placing an intermediate holder and a stick holder after the bricks are further laid in a circular shape at a predetermined height, and repeating drying and plastering along the bricks laid in this order using the loess, thereby increasing tension.

On the other hand, the conventional techniques rely on manual work, and thus mass production is difficult, and the time required for the work is long and the cost is high, and thus mass supply is impossible.

In addition, in most of the conventional barbecue apparatuses, the heat inside the barbecue apparatus is dispersed to the outside, so that the barbecue apparatus takes a long time and the heat is not concentrated on the roast, and thus a coating film is not formed, and excessive water loss is caused, thereby deteriorating the taste.

Disclosure of Invention

(problems to be solved by the invention)

The present invention relates to a method of manufacturing a barbecue oven and an oven manufactured thereby, in which a mold is formed by dividing an upper portion and a lower portion, an upper circular mold and a lower circular mold are combined after a material is filled into the mold and cured for a predetermined time, and then the mold is removed to complete the manufacturing, thereby significantly reducing the number of manufacturing steps.

(measures taken to solve the problems)

An object of an embodiment of the present invention is to provide a method of manufacturing a barbecue grill, including: the method comprises the following steps that firstly, a support is prepared, and a baking tray and a stove with an opening part are arranged on the support; a second step of connecting a plurality of arc-shaped metal plates to form a hemispherical inner frame and an outer frame, and manufacturing an upper die and a lower die by disposing the outer frame so as to leave a space outside the inner frame; a third step of setting a lower mold on a baking pan of the furnace, stacking ALC (autoclaved lightweight concrete) bricks and yellow bricks in a space between an inner frame and an outer frame of the lower mold for filling, and injecting mortar for filling; a fourth step of bonding the upper mold manufactured in the second step to an upper portion of the lower mold after curing the lower mold; a fifth step of stacking ALC bricks and loess bricks in a space between the inner frame and the outer frame of the upper mold to fill the space, and filling mortar to fill the space; sixthly, standing at normal temperature for curing; and a seventh step of releasing the inner frame and the outer frame constituting the upper mold and the lower mold to obtain a completed oven.

(Effect of the invention)

According to the disclosed embodiments, mass production can be achieved by minimizing manual work processes.

In addition, the working time can be greatly reduced, and the supply can be performed at low cost.

In addition, the ALC and the loess are used to form a wall surface, so that heat is well stored, and heat is concentrated to the roast side without being diffused to the outside to form a film, thereby retaining the gravy rich in meat and improving the taste.

Drawings

FIG. 1 is a flow chart illustrating a manufacturing process according to a disclosed embodiment.

FIG. 2 is a perspective view showing the outer frames of the upper and lower dies in the disclosed embodiment.

FIG. 3 is a perspective view showing the internal frames of the upper and lower dies in the disclosed embodiment.

Fig. 4 is a diagram illustrating in sequence a manufacturing process of an oven according to the disclosed embodiments.

FIG. 5 is a cross-sectional view illustrating a portion of a manufacturing process according to the disclosed embodiments.

FIG. 6 is a diagram illustrating an anti-expansion impact component according to disclosed embodiments.

Fig. 7 is a cross-sectional view showing an example in which a pizza roaster is installed in an oven body according to the disclosed embodiment.

Fig. 8 is a cross-sectional view showing an example in which a flame generation protection tool is provided to an oven body according to the disclosed embodiment.

Fig. 9 is a perspective view illustrating an example of a change in the appearance of the oven body according to the disclosed embodiment.

(description of reference numerals)

100: a lower die; 110: an inner frame; 120: an outer frame; 300: ALC brick;

200: upper die

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments to be described in the following are intended to facilitate those skilled in the art to which the present invention pertains to implement the present invention, and the technical spirit and scope of the present invention are not limited thereto.

In addition, the sizes, shapes, and the like of the constituent elements in the drawings may be exaggeratedly illustrated for clarity and convenience of description, and terms specifically defined in consideration of the structures and actions of the present invention may be different according to the intention or custom of a user or an application person, and should be defined according to the entire contents of the present specification.

In the drawings, FIG. 1 is a flow chart showing a manufacturing process of the disclosed embodiment, FIG. 2 is a perspective view showing outer frames of an upper mold and a lower mold in the disclosed embodiment, fig. 3 is a perspective view showing inner frames of an upper mold and a lower mold in the disclosed embodiment, fig. 4 is a view sequentially showing a manufacturing process of an oven of the disclosed embodiment, FIG. 5 is a sectional view showing a part of the manufacturing process of the disclosed embodiment, FIG. 6 is a view showing an expansion-preventing impact member of the disclosed embodiment, figure 7 is a cross-sectional view showing an example of the pizza roaster installed in the oven body of the disclosed embodiment, figure 8 is a cross-sectional view showing an example of providing a flame generation protection means to the oven body of the disclosed embodiment, fig. 9 is a perspective view showing an example of a change in the external appearance of the oven body of the disclosed embodiment.

As shown in fig. 1 and 4, in the manufacturing process of the barbecue grill according to the disclosed embodiment, in the first step (step S1), a support frame 720 is prepared, and a grill plate 710 and a stove 700 having an opening portion are provided on the support frame 720.

In the second step (step S2), a plurality of arc-shaped metal plate materials are connected to form the hemispherical inner frame 150 and the hemispherical outer frame 160, and the upper mold 200 and the lower mold 100 are manufactured by disposing the outer frame 160 so as to leave a space outside the inner frame 150.

In the third step (step S3), the lower mold 100 is set on the baking pan 710 of the furnace 700, ALC (autoclaved lightweight concrete) bricks 300 and yellow bricks are stacked in the space between the inner frame 150 and the outer frame 160 of the lower mold 100 to be filled, and mortar is injected to fill the space.

In the fourth step (step S4), after the lower mold 100 is cured, the upper mold 200 manufactured in the above-described second step (step S2) is combined with the upper portion of the lower mold 100.

In the fifth step (step S5), filling is performed by stacking ALC bricks 300 and loess bricks in the space between the inner frame 150 and the outer frame 160 of the upper mold 200, and caulking is performed by injecting mortar.

In the sixth step (step S6), curing (curing) is performed by leaving at normal temperature for a predetermined time.

In the seventh step (step S7), the inner frame 150 and the outer frame 160 constituting the upper die 200 and the lower die 100 are released and separated, thereby obtaining a completed oven.

Hereinafter, each step will be described in detail.

[ first step (step S1) ]

A holder 720 having a disk shape and an annular step at the outer periphery is prepared.

A cylindrical burner cylinder 730 is formed at an upper surface of the center of the holder 720.

A grill pan 710 having a disc shape and a plurality of through holes is formed at an upper end of the burner cylinder 730, and a burner 700 having an opening is provided to penetrate one side of the burner cylinder 730 (see fig. 4 (a)).

[ second step (step S2) ]

The upper mold 200 and the lower mold 100 are manufactured by connecting a plurality of arc-shaped metal plate materials to form the inner frame 150 and the outer frame 160 having a hemispherical shape, and disposing the outer frame 160 to leave a space outside the inner frame 150.

The upper die 200 and the lower die 100 are respectively composed of

inner frames

150 and 210 formed by connecting arc-shaped metal plate materials and

outer frames

160 and 220 arranged outside the

inner frames

150 and 210 at intervals.

The upper die 200 and the lower die 100 are formed in a hemispherical shape with an upper opening, and when the upper die 200 and the lower die 100 are coupled to each other, a cylindrical forming frame is assembled.

The

inner frames

150, 210 are formed by joining a plurality of arc-shaped metal plates, and particularly, may be formed in a cylindrical shape by joining two or four metal plates and joining them by means of partial welding.

The

outer frames

160 and 220 are formed by connecting a plurality of arc-shaped metal plate members, each of which has a flange F formed at an end thereof, and are assembled by bolts penetrating the flanges F and nuts coupled to the bolts after the flanges F of the adjacent metal plate members are brought into contact with each other.

Specifically, the

outer frames

160, 220 are formed by joining two or four metal plates to each other, thereby forming a cylindrical shape.

[ third step (step S3) ]

A lower mold 100 (see fig. 4 (a)) having an internal space and opened upward and downward is provided on a grill pan 710 of a stove 700.

Referring to fig. 2, a fire opening 162 corresponding to a fire is formed at one side of a lower portion of the outer frame 160.

The present invention includes an anti-bulging member 600 (see fig. 4 (b)) which is closely attached to an outer surface of an inner frame 150 and an inner surface of an outer frame 160 constituting a lower die 100.

Referring to fig. 5, expansion-resistant impact member 600 serves to prevent mortar and ALC brick 300 from thermal expansion impact that cracks or fractures due to expansion during high-temperature baking.

That is, expansion is absorbed by forming a predetermined gap between mortar and ALC brick 300 and inner frame 150 and between mortar and ALC brick 300 and outer frame 160 by anti-expansion impact member 600, and the crack due to expansion during baking is prevented.

Preferably, the expansion-preventing impact member 600 is suitably a wire mesh.

The screen is formed by weaving a plurality of filaments to have through holes in various shapes such as a lattice shape and a hexagonal shape, and is formed by being bent in a concavo-convex shape by being protruded and recessed in the front-rear direction.

The wire mesh may be selected from a mesh net, a metal lath (metal lath) net, a stainless steel mesh (SUS mesh) net, a stainless steel lath (SUS metal lath) net, a miracle mesh (miracle mesh), and a natural fiber net.

Therefore, the expansion-preventing impact member 600 is formed in a curved shape having unevenness, not in a flat plate-like shape, and therefore, a predetermined degree of gap can be formed on both sides, and by means of such gap, a predetermined degree of gap is formed between the mortar and ALC brick 300 and the inner frame 210 and between the mortar and ALC brick 300 and the outer frame 220, so that expansion can be absorbed.

On the other hand, ALC bricks 300 are stacked and filled in the space between inner frame 150 and outer frame 160 constituting lower mold 100, and mortar is injected into the gap between the inner wall surface of lower mold 100 and ALC bricks 300 to fill the gap.

ALC is concrete made of lime and silicic acid as main raw materials and having a lightweight structure in which numerous bubbles are independently dispersed in the interior by means of a foaming agent.

ALC has a light weight to about 1/4 of general concrete, thereby reducing construction cost, shortening construction period, increasing work efficiency, and reducing manufacturing cost to improve construction.

In addition, 70% of the fine independent bubbles in ALC strongly block heat transfer, with the advantage of making the thermal insulation performance about 10 times that of ordinary concrete.

The ALC brick 300 of the disclosed embodiment has an excellent fire resistance, does not burn by fire, and does not generate toxic gas by having an increased temperature of about 75 ℃ for the opposite side at 100T and about 18 ℃ for the opposite side at 200T when one side is heated for about 120 minutes to reach 1010 ℃.

In addition, the ALC brick 300 can suppress the generation of putrefying bacteria by an effective adsorption force, can remove the source of the taste, and has an advantage that the deodorization rate reaches 95.7% after two hours after the taste is applied to the ALC brick, and has almost the same deodorization as that of charcoal.

In addition, the ALC brick 300 has a feature of inhibiting the propagation of bacteria by far infrared rays emitted by itself, and the result of an antibacterial test using coliform bacteria shows that it has an excellent antibacterial property of reducing the bacteria by 99.8%.

In addition, ALC has been legally allowed to be used as a plant fertilizer and a feed additive in korea, japan, etc., whereby its stability can be demonstrated.

In addition, ALC generates 2000 wavelengths per minute to activate cell tissue, has a far infrared ray emission rate of about 91.2%, and has a far infrared ray emission level of 3.68 × 100, which is similar to that of medical stone, charcoal, and the like.

In an embodiment related to the specific composition of the ALC brick 300 disclosed, the ALC brick 300 is formed by mixing 53-62 weight percent (%) of a siliceous material, 17-28 weight percent of cement, 12-26.96 weight percent of quicklime powder, 3-6 weight percent of dihydrate gypsum or anhydrous gypsum, and 0.04-0.1 weight percent of an aluminum foaming agent.

The amount of the siliceous raw material used is preferably 53 to 62% by weight based on the total solids, and when the amount is 53% by weight or less, the amount of unreacted siliceous raw material is reduced, and the supporting force of tobermorite crystals formed on the ionic surface of the siliceous raw material is reduced, which may result in a decrease in the overall strength. Further, if the content is 62% by weight or more, the specific gravity becomes high.

The amount of cement used is preferably 17 to 28 weight% of the total solids, and if the amount of cement is less than 17 weight%, a large amount of scraps (scrap) are generated due to lack of binding force during curing, and if the amount of cement is more than 28 weight%, the cement is likely to undergo dimensional cracking due to the influence of magnesium oxide and the like contained in the cement.

The quicklime powder is preferably used in an amount of 12 to 26.96 wt% based on the total solids, is powdery, has a small particle size, and has a high curing speed and a high curing heat as the content of calcium oxide is higher, and therefore, the quicklime powder is used as a raw material for accelerating the curing speed of cement, can improve the productivity of panels using ALC110, and facilitates the formation of tobermorite.

The dihydrate gypsum or the anhydrous gypsum is preferably used in an amount of 3 to 6 wt% based on the total solid content, and the dihydrate gypsum or the anhydrous gypsum improves the wet strength of a panel formed by the ALC by virtue of the inter-particle filling effect, improves the compressive strength after a curing process at high temperature and high pressure, and also reduces the drying shrinkage rate, but if the dihydrate gypsum or the anhydrous gypsum is used in an amount of more than 6 wt%, there is a risk that a high-pressure device is corroded due to the influence of water-soluble sulfate, and if the dihydrate gypsum or the anhydrous gypsum is used in an amount of less than 3 wt%, the dihydrate or the anhydrous gypsum cannot sufficiently play a filling role.

The aluminum foaming agent determines the amount and size of bubbles in the panel formed of ALC, and therefore, it is preferable to charge the aluminum foaming agent in an amount of 0.04 to 0.1 weight percent based on the total solid content, and the aluminum foaming agent may be used in a powder form, but may be replaced by a paste of aluminum paste in which a thin-skinned aluminum material and ethylene glycol or the like are mixed, so that the foaming rate can be easily controlled, and the dispersion in the paste can be improved to make the distribution state of bubbles uniform.

On the other hand, in the case of slurrying by charging and mixing water in an amount of 0.6 to 0.8 times the total solid amount with respect to the total solid amount composed of the siliceous material, cement, quicklime powder, dihydrate gypsum or anhydrite and the aluminum foaming agent, if the water ratio is more than 0.8, the curing time is increased, and if the water ratio is less than 0.6, bubbles generated due to high viscosity are increased, and there is a possibility that cracks are generated on the surface of the slurry before curing by a high pressure apparatus (autoclave).

The mixture mixed and slurried as described above was cured at a temperature of 180 c under 10 atmospheres using a general high-pressure apparatus for 6 hours, so that ALC uniformly containing a large amount of bubbles was obtained.

Mortar is filled in the space between the inner frame 150 and the outer frame 160, and the mortar penetrates the surface and the gap of the ALC brick 300 through the pores of the expansion-preventing impact member 600 to fill the gap, thereby serving as an adhesive.

The mortar may be composed of loess and biotite, or may be composed of loess and natural ceramic powder.

As described above, the mortar and the ALC bricks 300 are integrated by curing the lower mold 100 composed of the inner frame 150 and the outer frame 160.

Therefore, after the lower mold 100 is directly placed on the bracket 700 and assembled, mortar and ALC bricks 300 are dried in a shadow place without direct light at normal temperature in a state where they are installed in the lower mold 100, and then cured by evaporating water.

The stand 700 may be provided with wheels (not shown) at a lower portion thereof for movement, and may be provided with a traction ring at one side thereof. Further, a plurality of metal plates are connected to the frame at predetermined intervals, and a plurality of vent holes are provided to facilitate moisture discharge and ventilation.

[ fourth step (step S4) ]

After the lower mold 100 of the third step (step S3) is cured, the upper mold 200 manufactured in the second step (step S2) is bonded to the upper portion of the lower mold 100 (see part (c) of fig. 4).

Here, the process of removing the inner frame 150 of the lower mold 100 may be performed first.

This is because it is difficult to remove the inner frame 150 of the lower die 100 in the later-described removing process of the upper die 200, and therefore the inner frame 150 of the lower die 100 is removed in advance.

Since the upper mold 200 is formed in a vertically symmetrical shape to the lower mold 100, the

inner frames

150 and 210 and the

outer frames

160 and 220 have the same diameter, and when the upper mold 200 is coupled to the lower mold 100, a molding frame having a substantially jar shape is assembled.

[ fifth step (step S5) ]

The outer surface of the inner frame 210 and the inner surface of the outer frame 220 constituting the upper mold 200 are respectively provided with the anti-swelling impact member 600 in close contact therewith.

Thereafter, the ALC bricks 300 and the loess bricks are stacked in the space between the inner frame 210 and the outer frame 220 of the upper mold 200 to be filled, and the gap is filled by injecting mortar (refer to part (d) of fig. 4).

Anti-expansion impact member 600 serves to prevent thermal expansion impact that causes mortar and ALC brick 300 to crack or break through expansion during high-temperature baking.

That is, expansion is absorbed by forming a predetermined gap between mortar and ALC brick 300 and inner frame 210 and between mortar and ALC brick 300 and outer frame 220 by anti-expansion impact member 600, and the crack due to expansion during baking is prevented.

The expansion-preventing impact member 600 is suitably a wire mesh.

The screen is formed by weaving a plurality of filaments to have through holes in various shapes such as a lattice shape and a hexagonal shape, and is formed by protruding and recessing in the front-rear direction and bending in a concavo-convex shape.

The silk screen can be selected from iron mesh, iron plate mesh, stainless steel strip mesh, miracle mesh, and natural fiber mesh.

On the other hand, ALC bricks 300 are stacked and filled in the space between inner frame 210 and outer frame 220 constituting upper mold 200, and mortar is injected into the gap between the inner wall surface of upper mold 200 and ALC bricks 300 to fill the gap.

The upper mold assembly manufactured through the above-described processes is left to stand at normal temperature to be naturally dried, thereby performing maintenance.

Alternatively, in order to shorten the curing time, curing may be performed by hot air at 50 to 70 ℃. In this case, since there is a concern that cracks may be generated by rapid drying, the temperature must be gradually increased.

[ sixth step (step S6) ]

The mortar is left to stand at normal temperature for a prescribed time for curing, so that the mortar and ALC bricks 300 are integrated by curing the assembled upper and

lower forms

200 and 100.

Preferably, the drying is performed in a shadow under normal temperature conditions without direct light, thereby performing curing by evaporating moisture.

[ seventh step (step S7) ]

After the curing in the sixth step (step S6) is completed, the upper mold 200 and the lower mold 100 are released to obtain the manufactured oven body 500 (see parts (e) and (f) of fig. 4).

The upper mold 200 and the lower mold 100 are removed by striking a partially welded portion of the upper mold 200 and the lower mold 100 with a tool, and after removing each outer frame, the inner frame is also removed.

[ eighth step (step S8) ]

The molding process is performed by performing surface polishing and applying a heat-resistant material to the oven body 500 obtained in the seventh step (step S7).

Since the unevenness trace is formed on the surface after removing the expansion-preventing impact member 600, the surface is processed by a grinding process in such a manner that the surface becomes smooth.

After that, the heat resistance of the surface is strengthened by coating a heat-resistant material.

The oven for barbecue manufactured through the above process includes: a supporter 720 formed with a stove 700 having an opening portion and a grill 710; the grill body 500 is integrally formed on the upper portion of the bracket 720, ALC bricks 300 and loess bricks are stacked in the grill body 500, mortar is formed on the inner surface and the outer surface, and the upper opening of the grill body 500 and the expansion impact preventing member 600 are closely attached to the ALC bricks 300 and loess bricks and integrally formed with the mortar.

The barbecue grill of the disclosed embodiment uses convection heat to roast meat, and in order to use the convection heat, a perfect structure that satisfies conditions such as a circular shape inside and heat storage is actually required, but at present, there is no tool or device that actually uses the convection heat to roast meat, and here, a body needs to have a certain degree of weight and volume in order to reasonably store heat.

Further, if the barbecue grill of the disclosed embodiment is utilized, a small amount of charcoal may be used. The unit price of a 7KG box of hot charcoal is around 9000 won as calculated by medium oven usage standards, which can be used for about 24 hours, thereby realizing energy saving.

The heat loss (reckoning) of the oven of this example and the external oven of the other apparatus were compared and collated, and the results are shown in table 1.

TABLE 1

Oven of the embodiment

Baking oven

Electric baking device

Glass oven

Pizza stove

Stove or range

Heat loss of flow

15％

40％

55％

50％

30％

70％

The heat loss of the oven reaches 40%, and in addition the heat generated continues to be lost towards the glass part of the body.

The heat loss of the electric grill reaches 55%, and the heat loss generated toward the glass portion of the front surface is large.

The oven with the outer face formed of glass has a heat loss of up to 50%, and since the outer face is entirely formed of glass, a large amount of heat loss occurs.

The pizza stove has a heat loss of 30%, and although conductive heat and a part of radiant heat are used, the heat loss is large because the side surface is open.

The heat loss of the furnace reached 70%, and the generated heat rose upward due to the upper end being open.

The heat loss of the barbecue oven of the embodiment reaches 15%, and the heat loss can be minimized because the heat storage mode of the thick wall body is adopted and the cover is arranged on the upper end cover to block the air.

On the other hand, fig. 7 is a sectional view showing an example of the pizza roaster.

The pizza roaster 3 may be detachably installed in an upper opening of the oven body 500.

The pizza baker 3 includes: a ring 31 provided at an upper portion; a grill (grill)32 for placing pizza dough; and a rod 33 for connecting the ring 31 and the grill 32, the grill 32 being formed in one or more layers.

The temperature of the upper opening portion of the toaster body 500 reaches a level at which the pizza is not burned and cooking is properly performed.

On the other hand, fig. 8 is a sectional view of an example of providing a flame generation prevention tool.

The burner may use charcoal, or a flame nozzle using gas as a heat source, and since there is a concern that oil of cooked meat may drip to block the nozzle hole, a protective cover 740 inserted into the oven body 500 and positioned above the burner 750 may be provided to protect the nozzle.

The burner 750 is a gas burner, and is inserted through an opening of the burner 700 for use.

The protective cover 740 is a plate having a "v" shape in cross section, is inserted into the oven body 500, and can be fixed by supporting both end portions on the inner peripheral wall of the oven body 500 so as to be positioned above the burner 750.

Therefore, the oil discharged during the roasting of the meat in the grill body 500 falls down to the protective cover 740 and is burned, so that the oil can be protected so as not to directly contact the burner 750.

On the other hand, fig. 9 is a perspective view showing an example of a change in the appearance of the oven.

The manufactured oven body 500c may have a shape in which the outer surface is flat, but is not limited thereto, and the outer surface may have a concave-convex shape.

This can be achieved by forming the shapes of the inner and outer frames constituting the upper and lower molds into a concave-convex pattern, thereby forming the shape of the outer surface of the oven to be formed into a shape having concave-convex portions.

Although preferred embodiments have been described, it will be apparent to those skilled in the art to which the present invention pertains that various modifications and variations can be made without departing from the spirit and scope of the invention, and it is intended that all such modifications and variations be within the scope of the appended claims.

Claims

1. A method of manufacturing a barbecue grill, comprising:

the method comprises the following steps that firstly, a support is prepared, and a baking tray and a stove with an opening part are arranged on the support;

a second step of connecting a plurality of arc-shaped metal plates to form a hemispherical inner frame and an outer frame, and arranging the outer frame so as to leave a space outside the inner frame, thereby manufacturing an upper die and a lower die;

a third step of arranging a lower mold on a baking tray of the furnace, stacking ALC bricks and loess bricks in a space between an inner frame and an outer frame of the lower mold for filling, and injecting mortar for filling;

a fourth step of bonding the upper mold manufactured in the second step to an upper portion of the lower mold after the lower mold is cured;

a fifth step of stacking ALC bricks and loess bricks in a space between the inner frame and the outer frame of the upper mold to fill the space, and filling mortar to fill the space;

sixthly, standing at normal temperature for curing; and

and a seventh step of releasing the inner frame and the outer frame constituting the upper mold and the lower mold to obtain a completed oven.

2. The method of claim 1, wherein the second step includes placing an anti-expansion and impact member in close contact with an outer surface of the inner frame and an inner surface of the outer frame of each of the upper mold and the lower mold.

3. The method of claim 2, wherein said anti-expansion impact member is a wire mesh.

4. The method of manufacturing a barbecue grill according to claim 3, wherein the mesh is curved in a concavo-convex shape.

5. The method of claim 4, wherein the wire mesh is one selected from the group consisting of iron wire mesh, iron plate wire mesh, stainless steel wire mesh, and natural fiber mesh.

6. The method of claim 1, wherein in the second step, the inner and outer frames of the upper and lower molds are formed by joining a plurality of arcuate metal plates.

7. The method of manufacturing a barbecue grill according to claim 1, comprising a step of performing a shaping process by surface-grinding the grill body obtained in the seventh step and coating a heat-resistant material.

8. The method of claim 1, wherein the mortar is prepared by mixing biotite with a slurry prepared by mixing water and loess.

9. The method of manufacturing a barbecue grill of claim 1, wherein said ALC brick is formed by the following process: a solid powder comprising 53 to 62% by weight of a siliceous material, 17 to 28% by weight of cement, 12 to 26.96% by weight of quicklime powder, 3 to 6% by weight of dihydrate gypsum or anhydrite, and 0.04 to 0.1% by weight of an aluminum foaming agent is mixed with 0.6 to 0.8 times of the above solid powder in water and slurried, and then cured at 180 ℃ under 10 atmospheres for 6 hours or more by a high pressure apparatus.

10. A barbecue oven manufactured by the manufacturing method of a barbecue oven according to any one of claims 1 to 9, characterized by comprising:

a bracket formed with a stove and a baking tray having an opening portion; and

an oven body integrally formed on the upper portion of the bracket,

the oven body is formed as follows:

ALC bricks and loess bricks are stacked in the interior, and mortar is formed on the inner face and the outer face;

the upper part is provided with an opening;

the expansion impact prevention member is adhered to the ALC brick and the loess brick to be integrated with the mortar.

11. The barbecue grill according to claim 10, comprising a pizza roaster detachably provided in an upper opening of the grill body.

12. The barbecue grill of claim 11,

the pizza baker includes:

a ring disposed at the upper portion;

a grill for placing pizza dough; and

a rod for connecting the ring and the grill,

the above-mentioned grill is formed in a single or a plurality of layers.

13. The barbecue grill of claim 10, including a protective cover inserted into the interior of said grill body.

14. The barbecue grill of claim 13,

the protective cover is a plate having a reverse V-shaped cross section, is inserted into the oven body, and is fixed by supporting both ends on the inner peripheral wall of the oven body so as to be positioned above the burner.

15. The barbecue grill of claim 10, wherein the outer surface of the grill body is formed in a flat shape, or the outer surface of the grill body is formed in a concavo-convex shape.