KR100970454B1 - Roast pan and thereof manufacturing method - Google Patents

Abstract

The present invention relates to a roasting plate and a method of manufacturing the same, which can maximize quality through rapid and simple mass production, maximum quality improvement through guarantee of failure prevention life and guarantee of hygiene, and the bottom of which most impacts the gas range during use. It is possible to prevent cracks due to impact as well as consider the appearance by integrally supporting the support plate, and weld the boundary line where the donut top plate and the circular center plate meet together to form a circular crimp between the lower support plate and the circular center plate. The crushed powder or powder of porcelain plate can be prevented from escaping by welding of the boundary line, which ensures hygienic condition and prevents the ingress of moisture and prevents mutual phenomena as well as the heat of life. Even if you apply the Long service life) to maximize quality improvement.

Lower support plate, circular raised surface, donut type low flat surface, lower bending edge, donut top plate, upper bending edge, round ceramic plate, circular center plate, boundary line, hole

Description

Roasting board and its manufacturing method {ROAST PAN AND THEREOF MANUFACTURING METHOD}

The present invention relates to a roasting plate and a method of manufacturing the same, and more particularly, a roasting plate and a method for manufacturing the same, which can aim to maximize the productivity by maximizing productivity through quick and easy mass production, ensuring a defect-proof life and ensuring hygiene. It is about.

In general, the roasting plate is used for the purpose of grilling beef, pork, duck or fish, these grilling plate is produced by injection or die casting, such as aluminum iron or stainless steel.

The baking plate produced by injection or die casting is composed of a single layer and utilizes heating heat as direct heat, which causes a problem of not easily cooking meat or fish, but easily burning or pressing the surface.

In order to overcome this phenomenon. Publication No. 1998-043111 discloses a grilling plate which is not pressed or burned.

1 is a perspective view showing a pre-release grilled plate, Figure 2 is a cross-sectional view showing a pre-release grilled plate.

As shown in FIGS. 1 and 2, the baked plate is uniformly embedded with a layer of ocher powder (4) between the double metal plates (1, 2) in the form of a pot lid such as brass or copper. When the ocher powder 4 is evenly distributed around by the centrifugal force while holding the double metal plates 1 and 2 in the jig through the through holes 5 of the bent double metal plates 1 and 2, the upper metal plate 1 The periphery 3 allows the periphery 3 'of the bottom metal plate 2 to be wrapped so that the ocher layer 4 is evenly distributed between the surface and the bottom double metal plates 1 and 2.

By the way, since the previously disclosed roasting plate is produced by filling the ocher powder (4) between the upper metal plate (1) and the lower metal plate (2) by centrifugal force, the work is too difficult to have a disadvantage in greatly reducing productivity. .

On the other hand, grilled plates made of metal have excellent thermal conductivity so that food can be easily cooked, but food is easily burned by the direct heat of the metal itself, and it is cooled immediately after the heating source (heater) is removed to retain heating heat for a long time. It does not have the disadvantage.

In order to overcome this phenomenon, a technology that incorporates a heat storage body such as charcoal or loess for a long time has been developed in kitchen containers of the same field as the roasting plate. The metal body and the metal body are screwed together, the second heat storage body is sandwiched between pressing and pressing the metal body and the metal body, and the third type of die casting the metal body between the heat storage body.

Prior art type 1 (screw coupling type) in the kitchen vessel field

Figure 3 is a cross-sectional view showing a heating vessel for the kitchen notice (2006.05.03. Announcement, Utility Model Registration No. 415451).

The pre-announced kitchen heating vessel shown in FIG. 3 has a bottom surface 11 that is convexly rounded toward the center to provide an under space 11a and a ridge 12 having a screw groove 12a at the bottom and a circular shape. The container 10 having the circle supporter 13 protruding from it, the under plate 20 and the underspace 11a fitted with the circle supporter 13 and having a through hole 21 corresponding to the screw groove 12a. And the char plate 30 is filled between the under plate 20, and through the through hole 21 consists of a configuration including a bolt 40 is fastened to the screw groove (12a).

Such a kitchen heating container has a structure in which the bottom surface 11 on which the food is cooked substantially does not directly contact the heating source and receives heating heat indirectly, so that food is not easily burned and charcoal particles 30 are in the off state of the heating source. Its efficiency can be recognized in terms of its ability to continuously utilize heating heat through its heat storage function for a long time.

However, as shown by the reference number "T" of FIG. 3, there is a fine gap T between the underplate 20 and the circle supporter 13, so that water is penetrated into the fine gap T when the heating vessel is washed, and charcoal is removed. Particles 30 contain moisture, and thus, when heating heat is applied to cook food, moisture is first boiled to generate steam pressure (noise), and the bottom surface 11 is bent while being bent from the under plate 20. Product defects often appear or have a short lifespan.

Prior art type 2 in the kitchen container field (pressing and crimping type)

4 is a cross-sectional view showing a double metal heat-resistant casserole of the line announcement (August 14, 2006, Utility Model Registration No. 423976).

The line-notified double metal heat-resistant casserole shown in FIG. 4 is formed by integrally drawing and molding a metal outer container 2 and an inner container 3 by a press, and an indentation part formed on the bottom surface of the outer container 2. (4) the stone powder (5) in the interior, the handle (7) riveted to the coupling hole (6) formed at the upper left and right of the outer container (2), and the outer container (2) is combined inside the rubber punch It consists of a configuration including an inner container (3) united and fixed to have a ridge (9).

The double metal heat-resistant casserole is formed with a concave portion 4 in the outer container 2 constituting the casserole 1, and then injects the stone powder 5, and then the inner container 3 is pressed and fixed so that the stone powder 5 is By being sealed, it is possible to prevent a defect from being pushed upward in the molding process of the stone powder 5.

By the way, the double metal heat-resistant casserole of Figure 4 also generates a fine gap (T) between the outer container (2) and the inner container (3) as indicated by the reference number "T" when water is used as a fine gap (T) during long-term use. As it penetrates, it causes the stone powder (5) to contain water. Therefore, when heating heat is applied to cook food, the water boils first to generate steam pressure (and noise), and thus the inner container (3) and the outer container (2). As a result of opening up each other, shortening of product defects and lifespan, as well as the fine powder (T), the stone powder (5) gradually escapes, causing the risk of penetrating harmful ingredients into food, and furthermore, the external container (2). ) And the inner container (3) are combined in the same size, causing additional problems such as waste of raw materials and overweight.

FIG. 5 is a process chart showing a method of manufacturing a kitchen vessel having a double steel structure of a line notification (2008.02.01. Notification, Patent No. 0799742).

5 is a method of manufacturing a kitchen vessel having a pre-announced steel plate dual structure shown in FIG. 5 to prepare an inner container 10 and an outer container 30 of a steel plate material having the same shape and insertable therein.

The outer container 30 thus prepared is subjected to a pressure by embossing as shown in (a) to form a plurality of embossed projections 11 as inward (b).

Next, as shown in (c), the thermally conductive powder 20 is filled in the inner bottom surface of the outer container 30 in which the protrusion 11 is formed to the extent that the protrusion 11 is not visible, and the protrusion is usually The thermal conductive powder 20 is filled at a height of 1.2 times the height of (11).

The inner container 30 is seated inside the outer container 30 filled with the thermally conductive powder 20, and then the protrusion 11 of the outer container 30 is the inner container 30 as shown in (d). The outer container 30 and the inner container 10 are electrically welded by introducing and energizing a high current in a state in which they are pressed against each other so as to be in contact with the bottom surface thereof.

Through the electric welding, the inner surface of the outer container 30 and the outer surface of the inner container 10 as well as the projection 11 of the outer container 30 are brought into contact with the outer bottom surface of the inner container 10 to be integrated. It becomes possible.

As such, the outer container 30 and the inner container 10 are integrated by electric welding to finish the upper end of the container part 1 having a double structure through grinding processing as shown in (e). Complete the kitchen container.

The method of manufacturing a kitchen vessel having a steel plate dual structure made of the above process is filled with a thermally conductive material having a heat storage property inside the bottom surface, thereby preventing the phenomenon of cooking burning locally.

By the way, the method of manufacturing a kitchen vessel having a dual steel plate structure shown in Figure 5 after the coalescing in the state of preparing the inner container 10 and the outer container 30 of the same steel sheet material that can be inserted into each other inside the same shape As in the process of (e), the waste steel sheet (P) is cut and discarded, particularly expensive raw materials. Further, since the inner container 10 and the outer container 30 are coalesced to the same size. This leads to problems such as waste of additional raw materials and overweight.

Prior art type 3 (type produced by die casting)

Figure 6a is a cross-sectional view showing a pre-disclosed dual structure kitchen vessel (2006.03.28. Publication No. 10-2006-27845), Figure 6b is a bottom perspective view showing a carbon molded body applied to the pre-disclosed dual structure kitchen vessel. 6C is a front view showing a carbon molded article applied to a pre-disclosed dual structure kitchen container.

6A to 6C, the method of manufacturing the disclosed double structure kitchen container is placed in the lower mold, the upper and lower molds are molded, and the metal melt is injected through the inlet of the upper mold. The kitchen vessel body 1 is cast, wherein the carbon molded body 2 has at least three or more holes 3 and 4 radially formed therein, and the holes 3 and 4 have pins 3 made of a material such as a metal melt. ) And each of the other parts protrude to the bottom to form a gap between the inner bottom surface of the lower mold on which the carbon molded body 2 is placed, so that the carbon molded body 2 is a metal kitchen vessel body (1) It casts in the state interposed inside.

The dual structure kitchen container manufactured by such a process is preferable because there is no gap T which causes shortening of life and failure as shown in FIGS. 3 and 4, but the state in which the carbon molded body 2 is correctly positioned It is cumbersome to cast a molten metal in the manufacturing process, and in particular, a large amount of equipment investment and waste of energy for preparing the molten metal have a disadvantage in that productivity is greatly reduced.

The present invention has been made in view of the above problems, and the purpose is to maximize the productivity through mass production of quick and easy, to ensure the life of defect prevention and to ensure the maximization of quality improvement through ensuring hygiene state and It is to provide a method of manufacturing the same.

Grilled plate manufacturing method according to the present invention for achieving the above object,

Pressing a metal plate into a lower die while placing the metal plate in a lower die to provide a lower support plate having a circular raised surface and a donut-shaped low flat surface extending outwardly of the circular raised surface;

Providing a donut-shaped upper plate corresponding to the donut-type low flat surface and matching and crimping and welding the lower support plate;

A step of joining a circular ceramic plate corresponding to the circular rising curve;

Joining and crimping a circular center plate corresponding to the circular porcelain plate and welding a boundary line where the donut top plate and the circular center plate meet together;

And a step of cutting or polishing the lower support plate, the donut top plate, and the circular center plate.

Grill plate according to a first embodiment of the present invention for achieving the above object,

A lower support plate having a circular raised surface and a donut-shaped low flat surface extending outward of the circular raised surface,

A donut top plate that is matched to the donut type low flat surface and is crimped and welded;

A circular ceramic plate conforming to the circular raised curve,

Comprising the circular ceramic plate is welded together along the boundary line that meets the donut top plate while pressing the circular ceramic plate as a basic feature in the technical configuration.

Grill plate according to a second embodiment of the present invention for achieving the above object,

In the roasting plate in which the lower support plate and the upper support plate are joined and welded with the heat storage body interposed therebetween,

The heat storage body is characterized in that the ceramic plate is pressed in a crushed state while being crushed by the matching and compression of the lower support plate and the upper support plate is characterized in that the technical features.

The present invention has a remarkable effect of maximizing productivity through quick and easy mass production, ensuring quality of life through guaranteeing failure prevention life and ensuring hygiene.

According to the present invention, the lower support plate that has the most impact on the gas cooker, etc. as a whole can be considered as well as the appearance, and can prevent cracking due to impact, and weld the boundary line where the donut top plate and the circular center plate meet together. It is possible to prevent the crushed powder of the round ceramic plate pressed between the support plate and the circular center plate from escaping by the melting point of the boundary line, which ensures hygienic condition and prevents the infiltration of moisture by vacuum sealing. And even if the phenomenon to prevent the gap between each other, even if the heating heat is applied to the effect of maximizing the quality improvement by prolonging the life through the prevention of the warping or deformation of each other.

The present invention is made by the process of being pressed and filled in a crushed state in the space between the circular rising surface and the circular center plate while crushing the circular ceramic plate by matching and pressing the circular center plate much more than the powder or powder It can be matched to the circular raised surface of the lower support plate more quickly and accurately and in particular quantitatively has the effect of maximizing productivity through superior workability.

According to the present invention, the lower support plate and the upper support plate of the lower support plate and the upper support plate can be utilized as a heat accumulator while the lower support plate, which has the greatest impact on the gas cooker and the like, is completely integrated and the upper support plate is joined and welded to be closed. When coalescing and crimping, the porcelain plate itself is crushed and filled in the space between them, so that the porcelain plate itself can be crushed and filled in a much faster and more precisely and quantitatively than the powder or powder. Maximize the effect is effective.

The roasting plate and its manufacturing method according to the present invention is designed to minimize the consumption of raw materials, maximize productivity through mass production of quick and simple, to ensure the quality of life through the guarantee of failure prevention life and to ensure the hygiene state, the manufacturing method of the roasting plate, the first It can be presented as a roasting plate according to the embodiment, and a roasting plate according to the second embodiment.

Roasting Board Manufacturing Method

7A to 7F are process charts illustrating a method of manufacturing a roasting plate according to the present invention.

In the method of manufacturing a roasting plate according to the present invention, as shown in FIG. 7A, the metal plate 1 is pressed into the upper mold G2 while being positioned in the lower mold G1, and the raised surface 11 of the circle and the raising of the circle are formed. A lower support plate 10 having a donut-shaped low flat surface 12 extending outwardly of the curved surface 11 is provided (S10), and as shown in FIG. 7B, the donut-shaped low flat surface of the lower support plate 10 ( The donut-shaped upper plate 20, which is matched with 12), is prepared to be matched to each other and pressed (welding, arc welding or ultrasonic welding, etc.) (S20).

Then, the circular porcelain plate 30 coincides with the circular raised curved surface 11 as shown in FIG. 7C (S30), and the coincidence with the circular porcelain plate 30 as shown in FIG. 7D. Simultaneously joining and crimping the circular center plate 40 and welding the boundary line L where the donut top plate 20 and the circular center plate 40 meet together (S40).

According to the present invention by the above process, the lower support plate 10, which has the most impact on the gas range, etc., during the first use, is fully integrated so that it is possible to consider the appearance as well as to prevent cracking due to impact. By welding the boundary line L where the upper plate 20 and the circular center plate 40 meet together, the circular ceramic plate 30 is pressed between the lower supporting plate 10 and the circular center plate 40. It is possible to prevent the broken powder from escaping by the boundary line (L), which ensures hygiene and prevents the ingress of moisture and prevents mutual expansion as well as heating heat. The points are organically combined with each other so as to maximize quality improvement by prolonging the lifespan through the prevention of phenomena or deformation.

In particular, the step S40 is crushed in the space between the circular curved plate 11 and the circular center plate 40 while the circular ceramic plate 30 is crushed by the matching and pressing of the circular center plate 40 It is made of a press-filled process so that it can be matched to the circular raised curved surface 11 of the lower support plate 10 in a much faster and more accurate and particularly quantitative manner than the powder or powder, thereby maximizing productivity through superior workability. [The roasting plate should be made convex in the center for the oil drop, but in consideration of the inability to quantitatively place the powder or powder on the circular rising curve 11, the fired ceramic plate 30 is placed quickly and accurately. Will be

Subsequently, as shown in FIG. 7E, the lower support plate 10, the donut top plate 20 and the circular center plate 40 are cut or polished (S50), and then coated, hard filmed, painted or handled as necessary. Attachment will proceed.

Furthermore, the manufacturing method of the roasting plate according to the present invention is provided with a hole 50 in the donut-type low flat surface 12 and the donut top plate 20 (S60), wherein the lower support plate 10 is a donut-type low flat surface The lower bending edge 13 is raised from the outside of the (12), the donut top plate 20 is provided with the upper bending edge 21 to be matched to the lower bending edge 13 so that it can be seaming each other. .

Even when the hole 50 is drilled in the donut-shaped low flat surface 12 and the donut-shaped top plate 20, the circular ceramic plate 30 is correctly partitioned by welding along the boundary line L, and thus the ceramic plate 30 It is possible to prevent the phenomenon that the crushed powders of) escape into the hole 50 in advance, and depending on this configuration, the oil bent out of the meat by seaming the lower bending edge 13 and the upper bending edge 21 This naturally allows it to fall through the hole 50.

First Embodiment (Roasting Plate 1)

The roasting plate according to the first embodiment of the present invention has a circular raised curved surface 11 and a donut-shaped low flat surface 12 that extends to the outside of the circular raised curved surface 11 as shown in FIGS. 7A to 7E. A lower support plate 10 having a lower surface, a donut-shaped upper plate 20 that is matched to the donut-type low flat surface 12 and welded and welded, and a circular ceramic plate 30 conforming to the circular raised curved surface 11. And, as a core configuration includes a circular center plate 40 welded together along the boundary line (L) to meet the donut top plate 20 while pressing the circular ceramic plate 30.

At this time, the circular porcelain plate 30 is crushed by the matching and crimping of the circular center plate 40, and crushed in the space between the circular rising curved surface 11 and the circular center plate 40. It can be filled.

The roasting plate according to the first embodiment of the present invention having such a configuration can prevent cracking due to impact as well as considering the appearance by fully integrating the lower support plate 10 having the most impact on the gas range and the like during use. , By welding the boundary line (L) where the donut top plate 20 and the circular center plate 40 meet together, the circular porcelain plate 30 pressed between the lower support plate 10 and the circular center plate 40. ) Can prevent the crushed powder from coming out by welding the boundary line (L) in advance, thereby ensuring hygiene and preventing the ingress of moisture and preventing mutual expansion of the life (vacuum seal). Even if the heating heat is applied, the quality improvement can be maximized by prolonging the life through preventing the warping or deformation of each other.

In particular, the circular porcelain plate 30 is crushed by the matching and compression of the circular center plate 40 while being crushed and filled in the space between the circular curved curved surface 11 and the circular center plate 40 in a crushed state. Therefore, it can be matched to the circular raised curved surface 11 of the lower support plate 10 in a much faster and more accurate and particularly quantitative manner than the powder or powder, thereby maximizing productivity through superior workability. The center should be convex for the oil drop, but considering the inability to quantitatively place the powder or powder on the circular raised curved surface 11, it is possible to recognize the specificity and difficulty by applying the fired porcelain plate 30. ].

Furthermore, a donut type low flat surface 12 and a hole 50 drilled in the donut top plate 20 are further provided, and the lower support plate 10 is lower bent from the outside of the donut type low flat surface 12. The edge 13 is provided, and the donut-shaped top plate 20 is provided with an upper bending edge 21 which is matched with the lower bending edge 13 so as to seam each other.

Even when the hole 50 is drilled in the donut-shaped low flat surface 12 and the donut-shaped top plate 20, the circular ceramic plate 30 is correctly partitioned by welding the boundary line L, and thus the ceramic plate 30 is formed. It is possible to eliminate the phenomenon that the crushed powders to escape into the hole 50 in advance, and depending on this configuration the seam of the lower bending edge (13) and the upper bending edge (21) by seaming naturally exits the meat hole Allow to fall through (50).

Second Embodiment (Roasting Plate 2)

8A is an exploded perspective view showing a roasting plate according to a second embodiment of the present invention, and FIG. 8B is a cross-sectional view showing a roasting plate according to a second embodiment of the present invention.

The roasting plate according to the second embodiment of the present invention is based on the lower support plate 60 and the upper support plate 70 are interposed with the heat storage body 80 therebetween as shown in FIGS. 8A and 8B, in particular, the heat storage. The sieve 80 is a ceramic plate 81 that is crushed while being crushed by the matching and compression of the lower support plate 60 and the upper support plate 70 as a core configuration.

In the state that the roasting plate according to the second embodiment of the present invention is also in the state of being closed by seaming or welding while joining the upper support plate 70 at the same time while fully integrating the lower support plate 60 having the most impact on the gas range or the like during use. When the fired porcelain plate 81 is utilized as the heat storage body 80, the porcelain plate 81 itself is crushed in the space therebetween when the lower support plate 60 and the upper support plate 70 are coalesced and pressed together. It can be crushed and filled in a broken state so that it can be triple-matched much more quickly and accurately than powder or powder, while maximizing productivity through superior workability.

The roasting plate and the manufacturing method according to the present invention made of such a method and configuration can be retained for a long time while transferring indirect heat to the food so that the food does not burn easily and radiates far infrared anions and the like to the meat quality and taste of the food. By using the indirect heat from the porcelain plate, the soup does not boil over, the food does not burn or press, oil does not splash, and the thermal efficiency can be maximized to prevent waste of energy. Not only is it easy to clean, but can also improve meat quality and taste of food by far infrared rays.

In addition, in the present invention, for convenience of description, the shape of each constituent grill is limited to a circular shape in consideration of a circular shape, but various shapes such as a rectangle are possible, and in particular, a state crushed by pressing by using a porcelain plate. Even though it is composed of calcined crystals itself, there is little property of absorbing water or containing water, which makes it particularly useful.

The present invention can be used in the field of kitchen containers (grilled or fried pan) used when grilling meat or fish.

1 is a perspective view showing a roasting plate with a pre-release (August 17, 1998. Publication No. 1998-043111).

Fig. 2 is a cross-sectional view showing a roasting plate with a preliminary publication (August 17, 1998. Publication No. 1998-043111).

Figure 3 is a cross-sectional view showing a heating vessel for the kitchen notice (2006.05.03. Announcement, Utility Model Registration No. 415451).

Figure 4 is a cross-sectional view showing a double metal heat-resistant casserole (2006.08.14. Notification, Utility Model Registration No. 423976).

Figure 5 is a process diagram showing a method of manufacturing a kitchen vessel having a double steel plate structure of the line notification (2008.02.01. Notification, patent 0799742).

Figure 6a is a cross-sectional view showing a double-structured kitchen vessel published in advance (March 28, 2006, Publication No. 10-2006-27845).

Figure 6b is a bottom perspective view showing a carbon molded article applied to the pre-disclosed dual structure kitchen container.

Figure 6c is a front view showing a carbon molded article applied to the pre-disclosed dual structure kitchen container.

7A to 7E are process charts showing a method for manufacturing a roasting plate (first embodiment) according to the present invention.

8A is an exploded perspective view showing a roasting plate according to a second embodiment of the present invention.

8B is a cross-sectional view showing a roasting plate according to a second embodiment of the present invention.

       Explanation of symbols on the main parts of the drawings

1: metal plate G1: lower mold

G2: upper mold 10: lower support plate

11: round rising surface 12: donut type low flat surface

13: lower bend border 20: donut top plate

21: upper bending border 30: round porcelain plate

40: circular center plate L: boundary line

50: hole 60: lower support plate

70: upper support plate 80: heat storage body

81: porcelain plate

Claims (9)

The donut-shaped low flat surface 12 which is pressed into the upper mold G2 while the metal plate 1 is positioned in the lower mold G1 and spread out to the outside of the circular raised curved surface 11 and the circular raised curved surface 11. Step (S10) for providing a lower support plate 10 having a), Step (S20) of providing a donut-shaped upper plate 20 corresponding to the donut-shaped low flat surface 12 to match and crimp and weld the lower support plate 10, Step (S30) for joining the circular porcelain plate 30 corresponding to the circular raised curved surface 11, While joining and pressing the circular center plate 40 corresponding to the circular porcelain plate 30 and welding the boundary line L where the donut top plate 20 and the circular center plate 40 meet together, Step S40 to make, And a step (S50) of cutting or polishing the lower support plate (10), the donut top plate (20) and the circular center plate (40). The method of claim 1, And a step (S60) of drilling a hole (50) in the donut type low flat surface (12) and the donut top plate (20). The method of claim 2, The lower support plate 10 has a lower bent edge 13 that rises from the outside of the donut-shaped low flat surface 12, and the donut top plate 20 is aligned with the lower bent edge 13. Baking plate manufacturing method characterized in that the seam is provided with a bending border (21). 4. The method according to any one of claims 1 to 3, In step S40, the circular porcelain plate 30 is crushed by the matching and pressing of the circular center plate 40, and the space is raised between the circular rising curved surface 11 and the circular center plate 40. Method of producing a kitchen vessel, characterized in that the press is filled in a broken state. A lower support plate 10 having a circular raised curved surface 11 and a donut-shaped low flat surface 12 extending outwardly of the circular raised curved surface 11; A donut top plate 20 which is matched to the donut-type low flat surface 12 and is crimped and welded, A circular ceramic plate 30 conforming to the circular raised curved surface 11, Roasting plate comprising a circular center plate (40) welded together along the boundary line (L) to meet the donut top plate 20 while pressing the circular ceramic plate (30). The method of claim 5, And a hole (50) drilled in the donut-shaped low flat surface (12) and the donut top plate (20). The method of claim 6, The lower support plate 10 has a lower bent edge 13 that rises from the outside of the donut-shaped low flat surface 12, and the donut top plate 20 is aligned with the lower bent edge 13. Baking board, characterized in that the seam is provided with a bending border (21). The method according to any one of claims 5 to 7, The circular porcelain plate 30 is crushed by the coincidence and compression of the circular center plate 40 and crushed in a space crushed in the space between the circular rising curved surface 11 and the circular center plate 40. Grilled plate characterized in that the filling. In the baking plate in which the lower support plate 60 and the upper support plate 70 are interposed with the heat storage body 80 interposed therebetween, The heat storage body 80 is made of a porcelain plate 81 is pressed in a crushed state while being crushed by the matching and compression of the lower support plate 60 and the upper support plate 70, The lower support plate (60) and the upper support plate (70) is characterized in that the welding or seaming treatment.

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