TWI250006B - Cooking container - Google Patents

Abstract

A cooking container having a ferromagnetic sheet metal (3) superimposed on the bottom outer flat surface part of a container main body (10) formed of a base material (14) made of nonmagnetic metallic material, wherein an opening part (6) having a bent part (5) formed so that the opening edge part (7) thereof faces the bottom outer flat surface part (11) side is provided on a ferromagnetic metal plate (3), the bent part (5) is pressurized in such an attitude that faces the bottom outer flat surface (11) in the state that the bottom inner flat part (12) of the container main body (10) is supported by a rigid flat surface, and the bent part (5) is press-fitted into the bottom part of the container main body (10) so as to vary the surface state of an impressed part (13) in the bottom inner flat surface part (12) at a position corresponding to the bent part (5) of the ferromagnetic sheet metal (3) so as to form a pattern produced due to a difference in surface state on the bottom inner flat surface part (12). Together with the position of the center part of the bottom outer flat surface part (11), the center opening part (9) of the opening edge part (7) bent towards the bottom outer flat surface part (11) is formed on the ferromagnetic sheet metal (3) as the above-mentioned opening part (6) in order to insert the opening edge part (7) into the bottom outer flat surface part (11) so that the base material (14) of the container main body (10) is exposed from the center opening part (9).

Description

1250006 A7 B7

V. INSTRUCTIONS OF THE INVENTION (1) [Technical field to which the invention pertains] (Please read the precautions on the back side and then fill out this page.) The present invention relates to a method of combining a ferromagnetic metal plate with a container body using a non-magnetic metal material as a base material. An integral cooking container is formed on the outer flat portion on the outer side of the bottom. [Prior Art] Taking a pot as an example, a cooking container such as a pot made of aluminum is generally used for polishing or oxidizing the surface of a pot-shaped pot formed of an aluminum plate. After the aluminum film is processed, it is sold, and there is also a pot that has an embossed-like uneven portion locally, so that it has a novel appearance of an embossed pot shape. However, there is no research on the boiling state of the boiling hot water by using the pot. That is to say, although the pattern is added to the conventional cooking container, it does not have any effect of conditioning during conditioning. Therefore, the purpose of the present invention is to provide a cooking container which is easy to use using aluminum as a base material, and forms a pattern on the inner surface of the bottom portion, in addition to being aesthetically pleasing, when used The cooking container can change the boiling cooking container particularly when cooking using an electromagnetic cooker. [Disclosure of the Invention] The present invention relates to forming a bottom outer flat portion on the outer surface of the bottom portion of the container body using a non-magnetic metal material represented by aluminum as a base material, and integrally bonding the stainless steel plate on the bottom outer flat portion A cooking container such as a pot or a fryer of a magnetic metal plate. The paper size on the ferromagnetic metal plate is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -4- 1250006 A7 B7

V. INSTRUCTIONS (2) (Please read the note on the back and then fill out this page.) The Ministry of Economic Affairs, the Intellectual Property Office, the employee consortium, prints the opening, and has the edge of the opening opening that overlaps the side of the bottom outer plane. Made into a bent part. A bottom inner flat portion is formed at the inner surface of the bottom of the container body. The bottom inner flat portion is pressed toward the bent portion side where the ferromagnetic metal plate is formed in a state of being supported by the rigid flat surface, and is bent toward the outer side planar portion of the container body, and each bend is formed from the outer side of the bottom portion. The fold is pressed into the aforementioned bottom. By pressing the bent portion, the ferromagnetic metal plate and the bottom outer flat portion are integrally joined to each other and then superposed on the container body. When the ferromagnetic metal plate is pressurized toward the container body, the ferromagnetic metal plate is entirely submerged from the bottom outer planar portion into the base material, so that the ferromagnetic metal plate is in the base material of the bottom portion. Compressive deformation occurs in the projection range toward the inner plane side of the bottom of the pan. With the compression deformation occurring in the projection range, an indentation portion is formed on the bottom inner plane portion corresponding to the configuration field of the aforementioned ferromagnetic metal plate. In particular, the indentation portion corresponding to the bent portion is excessively intense in compression of the base material on the inner side thereof, and even if the pressing force is released, a micro convex portion slightly protruding from the periphery is formed, and within the aforementioned projection range is formed. In the inner plane of the bottom of the pan, when the overall compression processing is applied, the above-mentioned projection range is a mold that is pressed against the flat shape to promote the surface of the mold, and is applied with a denser pressing around the indented portion to increase Brightness changes the surface state. The method of smoothing the indentation portion of the flat portion on the inner side of the bottom portion or increasing the brightness thereof is performed by pressing the small protruding portion remaining during the honing processing or the precision machining on the flat portion on the inner side of the bottom portion. Deformed slits or depressions. In the indentation portion thus formed, after the surface state around the indentation portion is generated, the point at which the pattern is formed on the flat portion of the bottom of the pan is the standard of the paper (CNS) A4 specification (210X297 mm). ) - 5- 1250006 A7 B7

Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, K Workers' Consumption Cooperative. V. Description of the Invention (3) Features of the present invention. The pattern ' is formed by pressing a bending yoke formed on the ferromagnetic metal plate and having an opening portion, whereby the bottom inner flat portion corresponding to the strong compression deformation is slightly protruded, and the indentation portion of the slightly convex portion is formed. , which in turn produces a different appearance than the surrounding. On the other hand, the indentation portion is subjected to compression processing on the inner side, so that when the surface is smoothed by compression processing, the brightness is also increased. The pattern can also be displayed by the difference in brightness. Thus, the inner surface of the bottom of the bottom of the container body can be patterned by the difference in the surface state of the bottom surface of the pan. It is preferable that the bent portion is formed into a cylindrical shape. When the bent portion is pressed into the base material of the container body, the bending external force formed by the reaction force of the base material affecting the bent portion has a tendency to act on the bent portion as long as the bent portion is formed. The cylindrical shape can easily withstand the bending external force. After the bent portion is pressed into the container body, an annular indented portion is clearly formed corresponding to the above-mentioned pressed portion at the inner surface of the bottom of the container body. In order to form the indented portion formed by these steps into the same shape, it can be completed by a punch or a die having substantially the same size as the aforementioned bent portion. For example, a turret type hexagonal punch can be used. The pressure machine is executed efficiently. That is to make the processing efficiency. Secondly, if the indentation portion is evenly distributed and disposed on the bottom inner plane portion, and the cooking vessel is supplied to the electromagnetic cooker, since the vapor generation point is evenly dispersed, it can be avoided to cause single-sided heating or partial boiling to reach The result of preventing boiling over. Further, if the ratio of the area of the indented portion on the inner surface of the pan bottom is formed on average, steam bubbles are uniformly generated in the cooking container, so the paper wave scale is applied to the Chinese National Standard (CNS) A4 specification (210×297 mm).衣1T-----IAW-1 (Please read the note on the back and fill out this page) -6 - 1250006 Ministry of Economic Affairs Intellectual Property Bureau 8 Workers Consumption Cooperative Printed ^.9411. 11 夺用Η _充_ V. Description of the invention (4) It is possible to avoid the formation of localized half-baked meat by the cooked food. The above state can be achieved by arranging the openings formed in the ferromagnetic metal plate on average. On the other hand, when the ferromagnetic metal plate has openings having different opening diameters, the area of the indentation portion is different, so that the vapor bubble generation points can be evenly arranged on the bottom inner plane portion of the cooking container. Next, the change in the surface state described above will be described with respect to the state of the microprotrusions. The thickness of the bottom of the container body formed of a non-magnetic metal material is preferably about 1.6 to 2.6 mm in the case of using an aluminum material. The ferromagnetic metal plate which is superposed on the bottom of the container body and integrated into one body, when using the ferrite-iron-type stainless steel or the granulated iron-based stainless steel, the thickness of the base material is 15 to 25% (in other words, the ferromagnetic metal plate It is suitable for a thickness of about 0.2 4 to 0.6 5 mm. The change in the surface state differs depending on the thickness of the ferromagnetic metal plate, and the indented portion forms a micro-convex portion having a fine height of 20 μm or less than 20 μm, and improves the smoothness of the surface of the indented portion or light. brightness. The microprotrusion portion is formed by pressing a bent portion formed on the ferromagnetic metal plate into the bottom of the container body. However, when the pot of the present invention having the above structure is boiled in hot water, when the pot is placed in the electromagnetic cooker, although the ferromagnetic metal generates heat, the base material formed of the non-magnetic metal does not generate heat. Further, if the non-magnetic metal plate is of the name "because the heat conduction is extremely fast", the indented portion located at the bottom plane portion of the bottom portion rapidly heats up when the ferromagnetic metal plate generates heat. For this reason, a strong boiling is formed at the indentation portion corresponding to the above-described pattern, and bubbles are less likely to be generated in the portion around it. Therefore, the paper size corresponding to the pattern formed by the aforementioned indentation portion is in the boiling state of the pot. The Chinese National Standard (CNS) A4 specification (210x297 mm) is applied to the clothing ITAW' Li (please read the notes on the back first) Fill in this page) -7 - Amendment to this paragraph eight supplement 1250006 A7 _ B7 V, invention description (5) style. Because of this, the boiling point can be limited to a local part, so that boiling water can be easily prevented. It is preferable that the indented portion has a plurality of microprotrusions having the same shape and equally divided on the inner side plane portion of the bottom portion. In other words, a plurality of openings having the same shape are formed on the ferromagnetic metal plate, and the bent portions formed on the opening edge portions are respectively pressed into the bottom portion of the container body from the bottom outer flat portion. Here, a specific example is shown. First, after the surface of the ferromagnetic metal plate is turned from the front side to the back side (the side of the bottom of the pot is overlapped), the punch penetrating the ferromagnetic metal plate is punched in the die. The opening having the cylindrical portion bent at the peripheral edge is formed by the inner edge flange, and a plurality of openings having the bent portion protruding toward the inner surface side are formed. The bent portions are formed in a cylindrical shape or a torn cylindrical shape on the outer circumference of the opening. That is, at the time of processing, the bent portion is formed into a cylindrical shape, a torn cylindrical shape, or a front end portion thereof according to the ratio of the diameter of the positioning hole to the opening hole and the opening diameter, or the shape of the tip end of the punch. Formed sharp. If the diameter of the positioning hole is larger than the opening diameter, the bent portion is formed into a cylindrical shape. When the diameter of the positioning hole is smaller than the opening diameter, a torn cylindrical shape is formed, and if it is smaller, a sharp shape is formed. Specifically, the bent portion forms an upright portion having a height of about 1 to 2.5 mm. Since the bent portion formed in this manner is deeply pressed into the base material constituting the bottom of the container body, the distance from the front end of the bent portion to the flat inner surface of the bottom portion is not long. For example, when the thickness of the bottom portion is 1 · 6 to 2.6 m m , the front end of the bent portion is formed at a position of 0.5 to 1 m m below the surface of the inner surface portion of the bottom portion. As a result, the paper size applies to the Chinese National Standard (CNS) A4 specification (210X 297 mm) on the inner side of the bottom of the sin near the end of the sin ---.------fee II (please read the back first) Precautions and then fill out this page) Order Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Print-8- 1250006 A7 B7

V. INSTRUCTIONS (6) (Please read the precautions on the back and fill out this page.) On the surface, the indentation portion is formed by forming micro-convex portions of about 20 μm or less than 2 μm. The indented portion is slightly protruded, and its surface is also formed to be smooth and have a state of lightness. Moreover, when the pot is placed in the electromagnetic cooker, since the bent portion generates heat, the vapor bubble is formed at a position close to the front end portion thereof, which is different from the case where the same temperature is used on the plane, so that The point at which the vapor bubbles occur does not move. Therefore, if the hot water is in a boiling state and is viewed from above, the pattern formed by the vapor bubbles and having the same pattern as that formed by the aforementioned indentation portion can be seen. Therefore, when boiling is formed by a general cooking container, the boiling liquid surface with respect to the hot water rises in a ring shape, and the vapor bubble generation point is dispersed and fixed, so that the boiling liquid level can be suppressed from rising. And prevent the formation of boiling over. The Ministry of Economic Affairs' Intellectual Property Office employee consumption cooperative prints the vapor bubble generation point, which is preferably dispersed evenly on the bottom of the pot. For this reason, the pattern on the inner plane of the bottom is also preferably formed on average. That is to say, it is preferable that the bent portion is formed substantially evenly. For example, the openings of the same diameter are formed on the ferromagnetic metal plate on average. If the opening is formed by the formation of the crucible on the outer circumference of the opening portion such as the inner valgus, the bent portion formed by the above-described manner is pressed into the container body supporting the inner surface portion of the bottom portion on the plane having rigidity. In the case of the bottom outer flat portion, an annular indentation portion corresponding to the bent portion is formed. Furthermore, the present invention also includes a central opening formed on the ferromagnetic metal plate at a position corresponding to the central portion of the bottom outer planar portion. Similarly, at the opening edge portion of the central opening portion, the opening is bent inward to form a bent portion. Then, when the ferromagnetic metal plate is pressed against the outer surface portion of the bottom portion, the bent portion is pressed into the base material to be more suitable than the Chinese National Standard (CNS) A4 specification (21). 〇X297 mm) -9 - 1250006 Correction + 94.J1. 1ί nThis year's Β Supplement 5, invention description (7) ~ "~ The depth of the metal into the base metal is deeper. As a result, the ferromagnetic metal plate located at the center portion is fixed to the base material. On the other hand, if the central opening portion is formed in a circular shape, the stress in the ferromagnetic metal plate due to the skew during press-fitting or the later heating can be released from the central opening portion. Even when the cooking container is used in an electromagnetic cooker, the temperature of the ferromagnetic metal plate is not detected by a temperature detector disposed at the center of the electromagnetic cooker, thereby avoiding the limitation of the heating temperature during cooking. BEST MODE FOR CARRYING OUT THE INVENTION In order to explain the present invention in more detail, the present invention will be described below with reference to the accompanying drawings. Printed by the Consumer Cooperative of the Zhici Property Bureau of the Ministry of Economic Affairs (please read the notes on the back and fill out this page). Figures 1 to 7 show one of the examples applicable to the implementation of the present invention. In this example, the cooking container is a pan P having a circular viewing angle, and a non-magnetic metal material constituting the base material 14 of the container body 1 is formed of aluminum and polished. The base material 14 has a thickness of 2.3 mm, and the ferromagnetic metal plate 3 which is superposed on the base material 14 has a cross-shaped opening portion 6 having a thickness of about 0.40 to about 20 mm and a thickness of 0.4 mm. The ferromagnetic stainless steel plate (hereinafter collectively referred to as the ferromagnetic stainless steel plate 3). Fig. 1 shows a case where aluminum is used as a base material 14 and a circular strong magnetic stainless steel plate 3 is fixed to a bottom outer surface portion 1 of the container body 10 where the side wall portion 2 is disposed around the bottom portion 1. Inside the P. As shown in Fig. 2, the bottom portion 1 of the pan P has a circular ferromagnetic stainless steel plate 3 having a cross-shaped opening portion 6 having a central portion which is cleaned and fixed to the outer side surface. As shown in the figure, the inner surface of the pot bottom of the pot P is 12, and is formed with a contour and the aforementioned ferromagnetic stainless steel sheet. The paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -10- 1250006 A7 B7

Correction i 94 11. 11 This year Λ B Supplement 5. Inventor (8) 3 The indentation portion 13 of the micro convex portion having substantially the same shape. Although the thickness of the bottom 1 of the container body 1 is preferably 1.6 to 2.6 m, it is 2.3 m in this example. Further, although the thickness of the ferromagnetic stainless steel plate 3 is preferably 15 to 25% of the thickness of the bottom portion, in the present example, the thickness of the ferromagnetic stainless steel plate 3 is 〇.4 mm, and the thickness of the bottom portion 1 is The ratio is 17%. As shown in Fig. 3, the ferromagnetic stainless steel plate 3 is pressed by the outer surface side of the bottom portion 1 of the container body 1 which forms the pan P toward the bottom outer flat portion 1 i to form a bottom portion 1 which is overlapped with the container body 10 The outer side surface is then fixed and integrated. At the opening portion 6 of the ferromagnetic stainless steel plate 3, the base material 14 of the container body 10 is partially buried in the opening portion 6, and partially exposed. The ferromagnetic stainless steel plate 3 has a circular shape. As shown in Fig. 4, the cross-shaped opening portion 6 of the center portion is formed in an elliptical shape. At the opening edge portion 7, as shown in Fig. 5, a bent portion 5 which covers the entire circumference and is obliquely bent toward the side (upper side in the drawing) of the container body is formed. Further, the outer edge portion 4 located on the outer periphery of the ferromagnetic stainless steel sheet 3 faces the same side and covers the bent portion 5 which is obliquely bent over the entire circumference. As shown in Fig. 6 (a), the ferromagnetic stainless steel plate 3 is interposed between the pair of dies 15 and 15 which are formed into a flat surface and has a rigid pressing surface, together with the container body 1 A device such as the pressurizes the bottom surface of the container body 1 . Thus, the ferromagnetic stainless steel plate 3 is pressed into the bottom portion 1 of the container body 1 to form a sinking shape. Here, as shown in FIG. 6(b), the bent portion 5 formed on the outer edge portion 4 and the opening edge portion 7 of the ferromagnetic stainless steel plate 3 is formed deeper at the bottom portion 1 by the bottom outer flat portion. Embedding. Therefore, the above-mentioned ferromagnetic stainless steel plate 3 is applied to the bottom of the base 1 by the Chinese national standard (CNS) Α 4 specification (210×297 mm). Ordered by the Ministry of Economic Affairs Zhici Property Bureau 8 Workers Consumption Cooperative Printed -11 - 1250006 A7 B7

V. INSTRUCTIONS (9) (Please read the precautions on the back side and then fill in this page) Enter 'with the above-mentioned ferromagnetic stainless steel plate 3 facing the projection area formed by the bottom inner plane portion 1 2 in the container body 〇 The base material 14 is subjected to compression deformation. When the distance between the planes of the two molds 15 and 15 is set, the closest ill is set to be slightly equal to the thickness of the bottom portion 1; when about 3.2 mm, as shown in Fig. 6 (b) At the bottom inner plane portion 12, a micro-convex portion of about 20 μm is formed as the indentation portion 13 corresponding to the range of the ferromagnetic stainless steel plate 3. Causes the bottom inner plane on the inner side of the pot P! At two points, a central portion clearance is formed as shown in Fig. 1, and the contour is the same as that formed in the opening portion 6 of the ferromagnetic stainless steel plate 3. The bent portion 5 which is bent and formed on the outer edge portion 4 of the ferromagnetic stainless steel plate 3 is inclined obliquely from the bottom outer flat portion 11 when performing the press-in process as shown in Figs. 6 (a) and (b). The base material 14 is press-fitted, and the outer edge portion 4 is fixed to the bottom outer plane portion 1 1 . Therefore, even if the pot P in which the ferromagnetic stainless steel sheet 3 is superposed is repeatedly used and the temperature of the ferromagnetic stainless steel sheet 3 is repeatedly increased, the ferromagnetic stainless steel sheet 3 can be prevented from being peeled off by the container body 1 at the ridge. When the pot P formed in the above manner is placed on the electromagnetic cooker to boil the hot water, as shown in Fig. 7, the shape of the ferromagnetic stainless steel plate 3 is used in the bottom of the pot. The vapor bubble B generated by the bottom inner plane portion 12 of P floats after being formed. That is, the vapor bubble B formed by boiling in the range of the indentation portion 13 formed on the inner side planar portion 12 of the pan P does not correspond to the opening formed in the aforementioned ferromagnetic stainless steel plate 3. A strong boiling is formed in the range of the bottom inner plane portion 12 of the portion. The pattern formed by the floating of the vapor bubble B is roughly equivalent to the Chinese National Standard (CNS) A4 specification (210x297 mm) -12-1250006 A7 B7 correction >94·ί1· 11 Year Λ 补充 Supplement V. Invention Description (1〇) (Please read the precautions on the back and fill out this page.) The pattern of the bottom inner plane portion 12 is the same. When the cooker p is heated by the electromagnetic cooker, the ferromagnetic stainless steel plate 3 is heated, and the heat is transmitted through the aluminum material forming the base material 14 to the indented portion 13 formed on the bottom inner plane portion j 2 . The vapor bubble B is formed in the range of the indentation portion 13. However, in the opening portion 6 formed in the ferromagnetic stainless steel plate 3, since the aluminum material constituting the base material 14 exposed therein does not generate heat, the bottom inner flat portion 1 2 corresponding to the opening portion 6 is formed. In the range of the temperature, the temperature does not rise as in the above-described indentation portion 13, and the vapor bubble B is naturally not generated. As a result, as shown in the figure, the vapor bubble B is generated in a state in which the bottom inner plane portion 12 is divided into four, and a pattern is formed. Therefore, if the shape and arrangement of the opening portion 6 formed in the ferromagnetic stainless steel plate 3 are carefully examined, various patterns can be formed by the vapor bubble B on the bottom inner plane portion 1 of the pan P. For example, if the opening portion 6 is arranged in a star shape on the ferromagnetic stainless steel plate 3, the pattern formed by the vapor bubble B forms a star shape. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, Employees' Cooperatives, Figures 8 to 14 show other embodiments for the best mode of the present invention. In the present embodiment, the cooking container is also a pot having a circular shape in a plan view, and the non-magnetic metal material forming the container body is an aluminum material having a thickness of 2.3 mm, and the ferromagnetic metal sheet 3 fixed to the container body is Using a thickness of 0.4 mm, a circular opening portion 6 was obtained by performing a rim eversion process using a circular die or a die formed of a round bar, and the opening portion 6 was formed into a dispersively arranged ferromagnetic stainless steel plate. Fig. 8 shows the inner surface of the pot P in which the ferromagnetic stainless steel sheets which have been subjected to the inner edge eversion processing are overlapped and fixed to the bottom outer flat portion 1 1 . Further, as shown in a partially enlarged view in FIG. 9, on the bottom inner plane portion 12, a ring-shaped paper sheet having a plurality of surfaces smoothed and imparting brightness is applied to the Chinese National Standard (CNS) Α4 specification ( 210Χ 297 mm) -13- 1250006 A7 B7

V. Inventive Note (11) (Please read the precautions on the back side and fill out this page) The micro-convex portion is used as the indentation portion 13 and the indentation portion 3 is formed in a dispersed configuration. 1 is a plan view seen from the outer side of the bottom of the pot P, but a circular ferromagnetic stainless steel plate 3 is integrally fixed to the bottom outer flat portion 11 of the container body 10. On the other of the plurality of openings 6 formed in the ferromagnetic stainless steel plate 3, as shown in Fig. 11 in which one of them is enlarged, the aluminum material as the base material 14 of the container body 1 is exposed. At the opening portion 6, the base material 14 formed of an aluminum material is filled in a part thereof. On the outer circumference, a slightly convex annular projection is formed. In other words, by the reaction force when the bent portion 5 is pressed into the aluminum material, the back of the bent portion 5 is located at the position of the opening edge portion 7 of the opening portion 6 of the ferromagnetic stainless steel plate 3, The aforementioned ferromagnetic stainless steel plate 3 is formed slightly. The Ministry of Economic Affairs, the Intellectual Property Office, and the employee consumption cooperative are printed on the above-described ferromagnetic stainless steel plate 3, and similarly to the outer edge portion 4 which is not shown in Fig. 4, when the bent portion 5 is formed on the outer edge portion, it is also comprehensively oriented. The container body 1 is formed with a plurality of circular opening portions 6 dispersedly on the crotch side. A bent portion 5 is also formed and bent at the opening edge portion 7. When the opening portion 6 is formed by punching by the inner edge eversion processing on the ferromagnetic stainless steel sheet 3, as shown in Fig. 12 (a), (b), (c) of the enlarged opening portion 6, An erected ridge "8" having a height of about 1.8 mm is formed around the opening portion 6, and is formed as a bent portion 5. The upper side in the figure is a back side which is pushed by a punch. The standing portion 8 The shape is changed according to the size of the positioning hole, or the relationship between the gap between the punch and the die and the thickness of the ferromagnetic stainless steel plate 3, thereby forming a cylindrical shape (as shown in Fig. 12 (a)), and along The standing direction splits to form a tear cylinder (as shown in Figure 12 (b)), or the front end T forms the paper scale. Applicable to the Chinese National Standard (CNS) A4 specification (210X29*7 male) -14 - Correct dll. 11 This year's month B supplement 1250006 A7 _B7_ V. Invention description (12) Sharp sharp protrusions (as shown in Figure 1 2 (C)). The ferromagnetic stainless steel plate 3 is also as in the previous Figure 6 (a), (b) Said (please read the precautions on the back and then fill out this page). The ground, the bent part 5, so that the ends are bent separately The back side of the container is pressed in the direction of the bottom outer plane portion π of the container body ,, and the above-mentioned ferromagnetic stainless steel plate is pressed by the outer side of the bottom outer plane portion 1 1 at the container body 1 〇. 3, the container body 10 is overlapped with the container body 10 to form a solid. Here, the bent portion 5 is formed in plural numbers. However, since the standing portion is formed at a nearly right angle, the bent portion 5 is as shown in FIG. When the bottom outer side flat portion 1 1 is deeply pressed into the base material 4 of the container body 1 to form a more stable fixing, the front portion 8 is formed to be more rigid, so the front end portion thereof is formed. T can reach the vicinity of the inner surface of the bottom inner plane portion 1 2 of the container body 10. The front end portion T reaches about 0.5 mm from the inner surface. In other words, the above-mentioned annular micro-convex portion is formed. As the indentation portion 13 is caused by the proximity of the standing portion 8. The Ministry of Economic Affairs, the Intellectual Property Office, the employee consumption cooperative, printed, therefore, when the pot P is used to boil hot water from an electromagnetic cooker, as shown in Fig. 13. Illustrated, the generation point of the vapor bubble B is set close to forming the aforementioned bend The upright portion 8 of the portion 5 is at the scar portion 13 formed on the bottom side plane 1 2 of the front end portion 7. In other words, the aforementioned indentation portion 13 forms a heating point. Therefore, at the bottom inner plane portion 12, as enlarged In this portion, as shown in Fig. 14, a continuous vapor bubble B is formed by each of the indentation portions 13, and the bubble point does not move. Thus, the generation point of the vapor bubble B does not move, and the continuous formation is formed. The vapor bubble B rises directly upward, and the hot water A from the boiling liquid surface F is lowered to the point where the vapor bubble B is generated. As a result, a small range of convection is formed inside the pan P, and no generation occurs. Large convective terrain cost paper scale applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) -15- 1250006 A7 B7

V. Description of invention (13) (Please read the notes on the back and fill out this page) Average boiling. Therefore, the boiling state thereof is stabilized, and the boiling liquid surface F of the hot water A does not excessively rise in a stable state. In this way, it is possible to prevent the boiling of the boiling liquid surface F which is formed in a ring shape as in the conventional example from causing a boiling overflow. The resulting vapor bubbles are combined while moving along the bottom surface to prevent the intense boiling that is common in conventional cookware. In such a configuration, the indentation portion 13 formed on the upright portion 8 formed at the opening edge portion 7 of the plurality of openings 6 is mainly formed in the vicinity of the front end portion T thereof. Therefore, if the opening diameter or the arrangement of the opening portion 6 is changed, the pattern formed on the bottom inner plane portion 1 2 can be changed. Since the indentation portions 13 thus formed are each formed with a hot spot, when the hot water A is boiled, the convection inside the pot can be controlled to form a desired pattern, and the boiling state can be stabilized. Another embodiment of the present invention is printed by the Intellectual Property Office of the Intellectual Property Office of the Ministry of Economic Affairs. As shown in the longitudinal section of the central portion of the ferromagnetic metal plate in Fig. 15, in the central portion of the ferromagnetic stainless steel plate 3, The circular central opening portion 9 is formed as one of the openings 6 (except for the central opening portion 9 in Fig. 15, the remaining openings 6 are all omitted and not shown). As shown in Fig. 16, the opening edge portion 7 of the central opening portion 9 is formed such that the outer edge of the ferromagnetic stainless steel plate 3 is bent obliquely toward the outer side of the container body 1, and a bend is formed at the opening edge portion 7. Folding part 5. The opening portion 6 (not shown) which is formed between the outer side of the central opening portion 9 and the outer edge portion 4 of the ferromagnetic stainless steel plate 3 can be used in addition to the structures described in the above two types. Use any other structure. As shown in Fig. 17, if the ferromagnetic stainless steel 3 is overlapped and the paper size is applied to the Chinese National Standard (CNS) A4 specification (210X29? mm) -16- 1250006 A7 B7 Correction >94.11. 11

This year's month B supplement five, invention description (14) (please read the note on the back and then fill in the page). When it is fixed to the bottom outer plane portion 1 of the pot P, the above-mentioned bent portion 5 The fitting force of the component force at the center of the center opening portion 9 is pressed deeper into the base material 14 of the bottom outer plane portion 1 1 than the periphery, and the ferromagnetic stainless steel plate 3 is surely fixed to the outside of the bottom portion. In the case where the flat part 1 1 〇 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative prints, the ferromagnetic stainless steel plate 3 can also be pressed into the bottom outer plane portion 1 by using the steps shown in Fig. 6 (a), (b). . In this manner, in the state where the ferromagnetic stainless steel plate 3 is fixed to the container body 10, as shown in the figure, at the central opening portion 9, the aluminum material forming the base material 14 is formed to be slightly the same as the foregoing. The thickness of the ferromagnetic stainless steel plate 3 or the thickness of a part of the thickness thereof is formed so as to fill the central opening portion 9 and be exposed therefrom. On the outer surface, a surface lower than that of the aforementioned ferromagnetic stainless steel plate 3 is formed. In this way, the aluminum material constituting the base material 14 located in the central opening portion 9 receives the resistance of the opening edge portion 7 toward the center side thereof, so that the ferromagnetic stainless steel plate 3 can be surely fixed to the central opening portion 9 . Further, in the ferromagnetic stainless steel plate 3, since the radial stress is released at the center portion by the presence of the central opening portion 9, the skew can be suppressed, and even if the electromagnetic cooker repeatedly heats, it is difficult to form the container body 1. Peeling off. Further, in the central portion corresponding to the bottom inner plane portion 12 of the central opening portion 9, that is, the center portion of the pot P does not generate the vapor bubble B. Therefore, when a cooking container such as a Japanese broth bean curd pot is used, since the steam bubbles are not generated under the broth container placed in the center of the pan, the broth container does not pulsate due to the pressure of the steam, and becomes easy to use. And although the general electromagnetic cooker is provided in the central part of the heating surface, this paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -17- 1250006 A7 B7 Correction Supplement 9

B Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing 5, invention description (15) temperature sensor used to detect the temperature of the bottom of the pot to prevent overheating, if there is strong electromagnetic induction heat at the position of the temperature sensor In the case of a magnetic metal plate, the detected temperature is not the actual temperature of the cooking container (container body), but the temperature of the ferromagnetic metal plate having a higher temperature. As a result, even if the temperature limit of the container body is not reached, the heating is stopped as the temperature is reached, and the temperature is adjusted by taking the temperature lower than the limit temperature of the overheat prevention as the highest temperature. In other words, since the central opening portion of the ferromagnetic magnetic metal plate is disposed at a portion where the temperature is detected by the temperature sensor, the temperature of the base material which is formed by the temperature sensor to form the exposed container body is formed, so that the above-mentioned temperature can be avoided. The problem of cooking temperature drop. [Industrial Applicability] As described above, the cooking container of the present invention has a pattern on the inner surface to improve the appearance, and when the hot water is boiled by the electromagnetic cooker, the steam bubble generated by the same can be used. Form a pattern. Further, the container body is formed using a non-magnetic metal material having good thermal conductivity, which can improve the heating efficiency for the electromagnetic cooker and prevent the formation of boiling over. Further, by pressing the outer edge portion of the opening into the base material of the container body, the ferromagnetic metal plate is not easily peeled off and fixed to the container body, thereby forming a cooking container which can withstand repeated heating by the electromagnetic cooker. [Simple description of the drawing] Fig. 1 shows the application of the Chinese National Standard (CNS) A4 specification (21〇X: 297 mm) for the paper size as a container for cooking in the present invention. 1T--- ---^ (Please read the notes on the back and fill out this page) -18- 125〇0〇6 A7 B7

V. INSTRUCTIONS (16) A plan view of the important part inside the pot. Fig. 2 is a plan view showing an important part of the outside of the pot of Fig. 1. (Please read the precautions on the back and fill out this page.) Figure 3: A cross-sectional view showing the longitudinal structure of a pot with overlapping ferromagnetic metal plates. Figure 4: shows the longitudinal structural profile of the ferromagnetic metal plate before pressing. Fig. 5 is a perspective view of the ferromagnetic metal plate as seen from the side of the container body before the overlap. Figure 6: Figure 6 (a), (b) shows the key section of the step of superimposing the ferromagnetic metal plate on the bottom of the container body to be integrated into one. [Figure 6 (a) is the state before bonding" Figure 6 ( b) is the state after the combination. Fig. 7 is a plan view showing the state seen from above when the hot water is boiled using the above-mentioned pan. Fig. 8 is a plan view showing an important part of the outside of the pot as an example of the cooking container in the present invention. Figure 9: A partial enlarged view of Figure 8. Figure 10: Plan view seen from the outside of the bottom of the pot. Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperatives. Figure 1 1 shows an enlarged view of the section parallel to the part of the pot. Fig. 1 2: Fig. 1 2 (a), (b), and (c) show enlarged perspective views of variations of the bent portion of the ferromagnetic metal plate fixed to the container body, respectively. Fig. 13 is a schematic longitudinal sectional view showing a boiling state in the case where the hot water is boiled by an electromagnetic cooker in another embodiment. Figure 14: shows an enlarged cross-sectional view of the bubble generation point in Figure 13. This paper scale applies to the Chinese National Standard (CNS) A4 specification (21〇X297 mm) -19-

1250006 V. INSTRUCTION OF THE INVENTION (17) Fig. D A7 B7 Correction > Extinction 11. This Λ B Supplement Fig. 15 shows a key longitudinal cross-sectional view of another embodiment of the opening formed in the ferromagnetic metal plate. Figure 16: Figure 6: Oblique view seen from the bottom of the pot with overlapping ferromagnetic metal plates. Figure 17: A bottom critical longitudinal section showing the pots of overlapping and fixed ferromagnetic metal sheets.兀•Parts comparison table Β FA FA 1 2 (Please read the note on the back and fill out this page) Ministry of Economic Affairs Zhici Property Bureau employee consumption cooperative printed 4 5 6 7 8 9 pot steam bubble front boiling liquid Hot water bottom side wall strong magnetic metal plate strong magnetic stainless steel plate outer edge bending part opening part opening edge part vertical part central opening part This paper scale applies China National Standard (CNS) A4 specification (210X297 mm) -20- 1250006 A7 B7 V. INSTRUCTIONS (18) 10 Container body 11 Bottom outer flat portion 12 Bottom inner flat portion 13 Indented portion 14 Base material 15 Mold (please read the back note first and then fill in this page) Ministry of Economic Affairs Intellectual Property Bureau The employee consumption cooperative printed this paper scale applies the Chinese National Standard (CNS) A4 specification (210 >< 297 mm) -21 -

Claims (1)

1250006 A8 B8 C8 D8 Patent application No. 1. A cooking container in which a ferromagnetic metal plate is superposed on a cooking container of a bottom outer surface portion of a container body formed of a non-magnetic metal material, characterized in that: the above-mentioned ferromagnetic metal plate The upper portion has an opening portion in which the opening edge portion is bent toward the bottom outer plane portion side to form a bent portion, and the bottom inner flat portion of the container body is supported by the plane having rigidity to face the container The posture of the outer flat portion of the bottom portion of the main body pressurizes the bent portion to press the bent portion into the bottom portion of the container body to make the aforementioned curved portion corresponding to the ferromagnetic metal plate at the inner surface portion of the bottom portion The surface state of the indentation portion of the folded portion is changed, and the bent portion has an upright portion that is split into a tear cylindrical shape in the vertical direction. 2. The cooking container according to the first aspect of the invention, wherein the bent portion has an erect portion formed by forming a sharp-pointed projection at a front end portion, and the cooking container according to the first aspect of the patent application, wherein the aforementioned The indentation portion is formed by a plurality of indentations forming an annular shape. 4. The cooking container according to claim 3, wherein the indented portion is formed in the same shape. 5. The cooking container of claim 3, wherein the indented portion is evenly distributed and disposed on the bottom inner plane portion. -6. The cooking container of claim 3, wherein the ratio of the area occupied by the flat portion on the inner side of the bottom portion is formed in the same manner: ???the indentation portion is dispersedly disposed. · 7. For the cooking container of the third paragraph of the patent application, the paper size is applied to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please read the notes on the back and fill in the page), 1T d Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed 1250006 A8 B8 C8 D8 Sixth, the application for patent gardens The area of the indentation is different. 8. The cooking container according to the first aspect of the invention, wherein the inner surface of the punching operation is performed by inserting a punch into the die from the surface side toward the outer side flat portion side of the ferromagnetic metal plate or The flange extending process is configured to form the opening portion at a plurality of positions, and the bent portion is formed by a flange that is erected on an outer edge of each of the openings, and finally the respective bent portions are embedded in the front outer surface portion Inside the bottom of the container body. 9. The cooking container according to claim 8, wherein the opening portion is formed by using the die having a cylindrical inner surface and the punch having a circular cross section. {Please read the notes on the back and fill in the page.} Printed by the Ministry of Economic Affairs, Intellectual Property Office, Employees' Cooperatives. This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm).