JP2014155659A - Cooking appliance - Google Patents

Abstract

An object of the present invention is to provide a griddle having a uniform temperature distribution of the iron plate over the entire surface of the iron plate to eliminate unevenness in baking and having excellent heating efficiency and heat storage.
A first heat conducting plate that receives heat from a heating unit that heats an object to be heated and is placed on the heat receiving plate and receives heat from the heat receiving plate is heat conduction in a vertical direction. Heat transfer in the surface direction is promoted using the heat conduction characteristic that the rate is higher than the heat conductivity in the surface direction, and the heat storage plate placed above the first heat conduction plate is the first heat conduction The second heat conductive plate that accumulates heat from the plate and is placed above the heat storage plate and receives heat from the heat storage plate is used in the plane direction using the same heat conduction characteristics as the first heat conductive plate. Heat transfer is conducted, and the heat from the second heat conduction plate is transmitted to the cooking face plate placed above the second heat conduction plate. Thereby, the heat transfer in the plane direction in the cooking face plate which touches food directly from the heat receiving plate which receives the heat from the heat source is sufficiently performed.
[Selection] Figure 1

Description

  The present invention relates to a cooking device provided with a cooking plate placed on a heat source for cooking an object to be cooked, and in particular, the heating cooking plate is formed of a stack. .

A conventional cooking plate has a structure that is heated from below by a heat source such as gas or a heater. Moreover, the baking machine which has the iron plate for cooking mounted on a heat source is also called a "gridler", and is divided roughly into an electric type and a gas type. When the gas type is adopted as the heat source of the plate-shaped griddle device such as teppanyaki, the iron plate reaches the cooking temperature in a relatively short time due to the strong flame from the gas burner. There is an advantage that you can cook. On the other hand, the surface temperature of the cooking plate differs depending on the positional relationship with the burner, whether the heating location is near or far from the burner, and further, the air heated by the gas burner generates a flow and the flame fluctuates or the iron plate itself Due to various conditions such as differences in thickness and material, the temperature of the iron plate part may vary considerably.
For this reason, there has been a problem of so-called “baking unevenness” that the food on the iron plate is not heated uniformly.

  In order to eliminate the “baking unevenness”, it is necessary for the cook to empirically adjust the heat source manually to control the temperature. For this reason, there are problems that it takes time and effort to perform temperature management while taking into account the rise in the iron plate temperature as needed, and that the temperature distribution becomes uneven over the entire cooking surface without actually being able to make fine adjustments. there were.

  Therefore, there is a heating cooker that tries to improve the uniformity of temperature distribution on the heating surface by using an iron plate (heat plate) in which heat-resistant alloy plates with poor thermal conductivity and copper plates with good thermal conductivity are alternately stacked and combined. It is disclosed (for example, Patent Document 1 shown below).

Japanese Unexamined Patent Publication No. 7-67785

However, although the heating cooker of patent document 1 discloses a heat plate having a structure in which a plurality of metal plates are laminated, it uses a plurality of resistance heating elements as a heat source in the first place, and there is no burning unevenness due to flame fluctuation peculiar to gas type. I'm not dealing with anything. Moreover, the heating cooker of the cited reference 1 makes the 2nd layer and the copper plate which has thermal conductivity larger than the heat conductivity of the 1st layer, 3rd layer, and 5th layer heat-resistant alloy plate among 5 layer structures, and By laminating the fourth layer, the heat generated from the resistance heating element is diffused to the hot plate surface to improve the temperature distribution of the uppermost heating surface. What is the consideration for heat storage on the hot plate surface? Nor.
Therefore, the effect is limited, and it improves the temperature difference caused by the nonuniformity due to the fluctuation of the flame specific to the gas type, which is the subject of the present invention, and the positional relationship that the heating location is near or far from the burner. It was not enough.

  Accordingly, the present invention has been made in view of the above-mentioned problems, and provides a griddle device that makes the temperature distribution of the iron plate uniform over the entire surface of the iron plate, eliminates uneven baking, and is excellent in heating efficiency and heat storage. With the goal.

  In order to solve the above-described problems, the present invention provides a structure of a heating plate (for example, an iron plate) of a griddle unit, a sandwich comprising a heat receiving plate, a first graphite sheet, a heat storage body, a second graphite sheet, and a cooking face plate. It consists of a structure.

  Specifically, in the cooking device of the present invention, the heat receiving plate receives heat input from a heating unit that heats an object to be heated, and is placed on the heat receiving plate and receives heat from the heat receiving plate. The conductive plate promotes heat transfer in the plane direction by utilizing the heat conduction characteristic that the thermal conductivity in the vertical direction is higher than the thermal conductivity in the plane direction, and is placed above the first heat conductive plate. The second heat conductive plate that accumulates heat from the first heat conductive plate and is placed above the heat storage plate and receives heat from the heat storage plate has a vertical thermal conductivity in the surface direction. The heat conduction characteristic of higher than the heat conductivity of the plate is used to further promote the heat transfer in the surface direction, and the cooking face plate placed above the second heat conduction plate is fed from the second heat conduction plate. It is characterized by having a five-layer cooking plate that conducts heat.

  In addition, although the five layers of cooking plates are installed above the heating means such as a gas burner inside the griddle body, the cooking plate becomes hot due to the positional relationship between the cooking plate and the gas burner. Divided into easy-to-use parts and low-temperature parts. Therefore, the heating means of the cooking appliance of the present invention supplies heat to the heat receiving plate so that the surface temperature of the cooking face plate can be identified by the high temperature portion and the low temperature portion, and the high temperature portion is at the center and the back side from the center of the cooking plate. The low temperature part corresponds to the front side of the cooking plate. In addition, the near side corresponding to a low temperature part means the position (namely, F of FIG.1 (c)) of the heating cooking board near the operation panel side containing the power switch 5 shown in FIG.1 (b).

  In addition, the heating means of the cooking appliance of the present invention can be identified by the surface temperature of the cooking plate at the center and the high temperature portion corresponding to the back side from the center, and the low temperature portion corresponding to the front side of the cooking plate. Heat is supplied to the heat receiving plate. Further, a plurality of screwing members are installed between the cooking face plate and the heat receiving plate to cope with thermal deformation of the heating cooking plate, or at least one surface of the heat receiving plate, heat conducting plate, heat storage plate, cooking face plate Alternatively, a heat reflecting member is attached to the back surface.

  The cooking plate of the present invention is composed of a sandwich structure composed of a heat receiving plate, a first graphite sheet, a heat storage body, a second graphite sheet, and a cooking face plate, and therefore, from a heat receiving plate that receives heat from a heat source, Heat transfer to the cooking face plate that directly touches the ingredients is efficiently performed, and heat transfer in the plane direction inside the cooking plate is sufficiently performed, so that heating is uniform over the entire surface of the iron plate and uneven baking can be eliminated. it can.

It is a three-view figure of the griddle device provided with the heat cooking board which is one Embodiment of this invention. It is a figure which shows the example of the griddle apparatus from which the number of partial gas burners differs. It is a figure showing the lamination structure of a cooking-by-heating board. It is the figure which plotted the temperature measurement result regarding the heating cooking board of 1 layer structure. It is the figure which plotted the temperature measurement result regarding the heat cooking board of 3 layer structure. It is the figure which plotted the temperature measurement result regarding the heating cooking board of 5 layer structure. It is a figure which shows the position of a measurement point.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
FIG. 1 is a top view, a front view, and a side view of a griddle device 10 provided with a heating cooking plate (griddle surface) 2 showing an embodiment of the present invention. The griddle unit 10 includes a gas burner 1, a cooking plate 2, an oil pan 3, a chimney cover 4, a power switch 5, a select switch 6, a zone power switch 7, a temperature controller 8, and an operation box cover 9 installed at the lower part of the main body. It is a configuration that includes. For safety reasons, an excessive temperature control device (not shown) is provided.

  In this embodiment, as shown to Fig.1 (a), the gas burner 1 arrange | positions the partial gas burner 1a, 1b, 1c, 1d which has a some plate in parallel in order to heat the whole heating-cooking board 2 It is configured to do. Although the gas burner 1 may be arranged so that the entire lower surface of the cooking plate 2 is heated, a plurality of ingredients are also heated on the cooking plate 2 at the same time. A structure in which the gas burner 1 is not disposed directly under the cooking plate 2 on the front side of the main body 10 (F in FIG. 1C), and the portion A of the cooking plate 2 is not directly subjected to heat input from the gas burner 1. I have to. For example, food, such as meat, is placed on the back side of a griddle that can receive a large amount of heat from the gas burner 1 and can be heated at a high temperature, while vegetables, eggs, etc. are placed and heated in part A for cooking.

  In the case of this embodiment, the gas burner 1 is not particularly limited, but a gas infrared burner is used. The gas infrared burner is an efficient heat source for converting the wavelength of infrared rays emitted from the infrared burner to heat energy, since the radiation intensity is high. In addition, the example of the other griddle apparatus arrange | positioned by changing the number of partial gas burners according to the size of the heating cooking board 2 is shown in FIG.

  Further, a chimney cover 4 having an appropriate height made of, for example, stainless steel (SUS430 or the like) is disposed at the back of the cooking plate 2, and carbon dioxide generated by gas combustion is discharged to the outside of the griddle unit 10. Furthermore, the oil receiving part 3 is provided in the left side and / or the right side. The operation panel in front of the griddle unit 10 is provided with a zone-specific power switch 7, a temperature controller 8 and a power switch 5 corresponding to each partial gas burner. Each heating zone can be individually set and controlled in temperature.

  FIG. 3 shows the laminated structure of the cooking plate 1. As shown in FIG. 3, the cooking plate 1 includes, in order from the bottom, a heat receiving plate 11, a graphite sheet 12 (“first heat conduction plate” recited in the claims), a heat storage plate 13, and a graphite sheet 14 (claims). The “second heat conductive plate” described in the above item) and the cooking face plate 15 are laminated structures of five layers. The heat receiving plate 11 is a flat plate of a rolled steel material (for example, SS400) containing iron.

  As the graphite sheet 12 in this example, “PERM-FOIL (R)”, which is a graphite sheet having a thickness of about 1.0 mm made by Toyo Tanso, is used. In general, graphite sheets have high thermal conductivity. Especially, the thermal conductivity of “PERM-FOIL (R)” is 200 W / (M · K) in the plane direction with respect to the thickness direction of 5 W / (M · K). The thermal conductivity in the plane direction is about 40 times better than that in the thickness direction. Due to the characteristics of the graphite sheet having such heat conduction anisotropy, the heat of the cooking plate 1 is efficiently propagated in the surface direction. In addition, the graphite sheet 12 has a heat-resistant temperature of 400 ° C. or higher and a high compression recovery rate, and therefore can follow even if thermal stress deformation occurs in the heat receiving plate 11.

  The heat storage plate 13 prevents the heat input from the gas burner 1 from being gradually attenuated until reaching the cooking face plate 15 because the cooking plate 1 has a laminated structure, and the cooking face plate. This is used to maintain the heating state as efficiently as possible for a long time even after 15 is heated. An example of the heat storage plate 13 is a metal material made of aluminum plate or zirconium copper. In particular, zirconium is excellent in heat storage as it is used as a heat storage material for thermal insulation vests and windbreakers, and zirconium copper is more than other general metals such as iron-filled copper, tin-filled copper, and chromium steel. It is hard and suitable for cooking plate 1. An SS400 plate may be used as the heat storage plate. In the case of this embodiment, the uppermost cooking face plate 15 is an SS400 plate.

  Next, the heat transfer action of the griddle unit 10 configured as described above will be described. When the zone-specific power switch 7 on the operation panel is turned on, the supplied gas is ignited and burned by the heater ignition method, and the heat receiving plate 11 receives combustion heat (heat input) from the gas burner 1. In the present embodiment, for simplification of description, it is assumed that all the partial gas burners 1a, 1b, 1c, and 1d shown in FIG. .

  The heat input of the heat receiving plate 11 is transmitted to the first graphite sheet 12 installed in the upper layer of the heat receiving plate 11. As the temperature rises, the graphite sheet 12 moves heat input to the heat storage plate 13 which is an upper layer of the laminated structure, but not only in the vertical direction of the laminated structure but also in the graphite sheet due to the above-described heat conduction anisotropy. Heat is transferred quickly (ie horizontally). Therefore, the entire horizontal surface of the griddle device 10 can be heated without unevenness.

  Further, the heat transmitted to the first graphite sheet 12 moves to the heat storage plate 13. The high thermal conductivity of the heat storage plate 13 allows the temperature state to be maintained with low heating after the cooking face plate 15 has reached a desired high temperature state, thereby enabling efficient use of heat. Further, by using the heat storage plate 13, the temperature change of the cooking face plate 15 can be made as small as possible. As a result, it is not necessary to finely adjust the surface temperature of the cooking faceplate 15 based on the intuition and experience of the cooker, and there is an effect of reducing the work load on the cooker as compared with the conventional temperature adjustment of the cooking plate.

  Furthermore, the heat transmitted to the heat storage plate 13 moves to the second graphite sheet 14 disposed in the upper layer. The graphite sheet 14 is “PERM-FOIL (R)” which is a graphite sheet having a thickness of about 1.0 mm made of Toyo Carbon, which is the same as the graphite sheet 12 described above, and therefore has the same heat transfer characteristics. The cooking plate 2 of the present embodiment includes a plurality of graphite sheet layers characterized by thermal conductivity anisotropy that have a thermal conductivity in the plane direction of 40 times the thickness direction, and is configured as a laminated structure. It is a feature. The advantage that not only the heat conduction in the vertical direction but also the planar heat spread produced by the plurality of graphite sheet layers having large heat conduction characteristics in the plane direction is much superior to the conventional cooking device is as described above. The conventional griddle device including the heating cooker described in Patent Document 1 is not played.

  Finally, the heat of the second graphite sheet 14 propagates to the uppermost cooking face plate 15 and heats the ingredients placed on the cooking face plate. In addition, the cooking area 2a is formed in the site | part inside planar view of the cooking surface board 15 (refer FIG. 7).

  Moreover, when the cooking plate 2 is heated by the gas burner 1 and becomes high temperature, the cooking plate 2 is distorted by thermal stress and may be deformed as compared with the plate shape before heating. In order to suppress this thermal stress deformation as much as possible, in the case of the heating cooking plate 2 of the present embodiment, as shown in FIG. 3, the uppermost cooking face plate 15 and the lowermost heat receiving plate 11 are connected to a plurality of screwing members (bolts and (Nut) 16 to join. In the case of this embodiment, the bolt is welded and joined to the back surface of the cooking face plate 15, and a nut is fitted on the back surface of the lowermost heat receiving plate 11. In addition, the number of screwing members is appropriately adjusted according to the size of the cooking plate 2.

  Further, a heat-resistant ceramic-based member (for example, ceramic paint) may be attached to the surface (front surface, back surface, or both front and back surfaces) of each layer in the laminated structure so as to avoid heat reflection caused in heat transfer as much as possible. .

<Measurement experiment results>
Next, since the effect confirmation of the heating cooking board 2 including the 1st and 2nd graphite sheets 12 and 14 and the heat storage board 13 was evaluated, it demonstrates below. A cooking face plate 15 (FIG. 3C) having a single layer structure in which neither a graphite sheet nor a heat storage plate exists, and a single layer of graphite sheet 12 is interposed between the uppermost cooking face plate 15 and the lowermost heat receiving plate 11. A cooking face plate having a three-layer structure not including the heat storage plate 13 (FIG. 3B) and a cooking face plate having the same five-layer structure as the cooking plate 2 of the griddle device 10 shown in FIG. The experiment was conducted.

4 to 7 are graphs showing the results obtained by measuring the surface temperatures at a plurality of measurement points on the cooking faceplate of each layer structure. As shown in FIG. 7, a total of 12 points of CH1 to CH12 were set as the plurality of measurement points.
FIG. 4 shows the change over time of the surface temperature when the heat of the gas burner 1 is applied from the lower surface of the cooking face plate having a single layer structure shown in FIG. FIG. 5 shows the change over time of the surface temperature of the cooking face plate having the three-layer structure shown in FIG. Moreover, FIG. 6 represents the time-dependent change of the surface temperature of the cooking face plate of the same 5-layer structure as the heating cooking plate 2 of the griddle device 10 shown in FIG. 3A of the present embodiment. Further, a temperature control sensor is attached to the center position C, and the heat input from the gas burner 1 is cut off when the cooking face plate exceeds a predetermined temperature.

  4 to 6, the horizontal axis represents the time elapsed after heat input, and the vertical axis represents the measured temperature value at each measurement point (CH1 to CH12). The measurement points are distinguished by solid lines, dotted lines, and wavy lines corresponding to each measurement point (refer to the display on the right side of each figure for the correspondence between measurement points and line types).

First, referring to FIG. 4 showing the measurement result of the single-layer structure, it can be seen that each measurement point almost reaches the maximum temperature about 11 and a half minutes (time point T _A1 ) after ignition. Since the temperature adjustment value of the temperature adjustment sensor is set to 200 ° C., when the temperature adjustment sensor detects over 200 ° C., the heat input from the gas burner 1 is cut off and the temperature is lowered, and then the heat input is accepted and the temperature is changed again. The temperature control of increasing the temperature is repeated. In fact, as shown by the measurement temperatures of CH2, CH7, and CH5 corresponding to measurement point 2, measurement point 7, and measurement point 5, it can be seen that fine temperature adjustment in a undulating state is made after 15 minutes.

As described above, since the rear side or the center of the cooking face plate 2 is for high-temperature heating, the high temperature is maintained over the entire plotted time as compared with the front side for low-temperature heating (CH3, CH6, CH9, CH12). . Further, the maximum temperature difference (CH2−CH10) at the time T _A1 of the high temperature group (CH1, CH2, CH4, CH5, CH7, CH8, CH10, CH11) was about 45 ° C. On the other hand, the maximum temperature difference (CH9−CH6) at the time T _A1 of the low temperature group (CH3, CH6, CH9, CH12) was about 30 ° C. In the case of the low temperature group, although the temperature slightly increased after the time T _A1, it remained almost flat. Further, at the time T _B1 30 minutes before ignition, the maximum temperature difference of the high temperature group is smaller than the time T _A1 , but is still about 30 ° C., and the maximum temperature difference at the time T _B1 of the low temperature group is about 15 ° C. Therefore, when food is placed on the cooking face plate 15 and heated, uneven baking occurs particularly in the high temperature portion.

Next, referring to FIG. 5 showing the measurement result of the three-layer structure, the same maximum temperature as that of the one-layer structure shown in FIG. 4 is reached 15 minutes before (time point T _A3 ). The heat cooking plate has a three-layer structure, and the heat capacity increases as the thickness increases, and the time until heat is transferred to the uppermost layer is longer than the one-layer structure shown in FIG. Since the minimum temperature (CH6) at the time point T _A3 is increased, the maximum temperature difference across all measurement points is small in the three-layered cooking plate. This indicates that the graphite sheet 12 that does not exist in the single-layer structure has an effect of reducing the temperature difference.
Looking at each group, the maximum temperature difference (CH2-CH10) within the high temperature group at time T _A3 was about 38 ° C. Although it is certainly smaller than the one-layer structure of about 45 ° C, the difference of 38 ° C is due to the fact that CH10 and CH11 formed a so-called intermediate group and did not follow the temperature values at other measurement points in the high-temperature group. there were. The maximum temperature difference within the low temperature group was about 15 ° C. In addition, it has been clarified that the maximum temperature difference at the time point T _B3 is reduced particularly in the low temperature group, but it cannot be said that the temperature difference is significantly smaller in the high temperature group than in the single-layer structure. I understand that.

Such convergence in two groups, the high temperature group and the low temperature group, becomes prominent when FIG. 6 showing the experimental results for the same five-layer structure as in the present embodiment is seen. Referring to FIG. 6, the time to reach the maximum temperature of the high temperature group is about 16 and a half minutes (time point T _A5 ), and the maximum temperature difference is about 13 ° C. That is, the temperature difference is much smaller than 45 ° C. of the single layer structure and 38 ° C. of the three layer structure. Further, as shown in the figure, there is almost no temperature difference between the low temperature groups at the time point T _A5 , and this also makes a significant difference compared to the one-layer structure and the three-layer structure. Further, at the time point T _B5 , the temperature difference was reduced in both the high temperature group and the low temperature group as compared with the single layer structure and the three layer structure. In FIG. 6, CH10 is not plotted because a measurement value was not obtained due to a measurement error.

Furthermore, looking at the time-dependent temperature transition of the high temperature group from the time point T _A5 to the time point T _B5 when the maximum temperature is reached, in the case of a five-layer structure cooking plate, the high temperature group is different from the one-layer structure or the three-layer structure. The undulating temperature fluctuation for holding, that is, the time for which the temperature is kept near the set temperature (200 ° C.) becomes longer, and the temperature decrease curve after time T _A5 is relatively gentle.

  Therefore, the five-layered cooking face plate 2 in which the two layers of graphite sheets 12 and 14 are included between the uppermost cooking face plate 15 and the lowermost heat receiving plate 11 and the heat storage plate 13 is interposed between the graphite sheets, In both the high temperature groove and the low temperature group, it is proved that a specific place of the cooking faceplate 15 is not in a heating state in which a large temperature difference is generated as compared with other places, and generates uniform heat conduction. did it.

Therefore, according to the heating cooking plate 2 characterized by the five-layer laminated structure provided in the griddle device 10 of the present embodiment, the heat distribution of the combustion heat from the gas burner 1 is more uniform in the first graphite sheet 12. (The first stage of uniform thermal diffusion), and the presence of the second graphite sheet 14 further makes the heat distribution more uniform (second stage of uniform thermal diffusion). Such first-stage and second-stage heat diffusing means promote the uniform distribution of heat on the cooking face plate 15 in either the high temperature portion or the low temperature portion. In addition, the heat storage plate 13 plays an effective role in maintaining the cooking face plate 15 at a predetermined temperature.
As a result, not only the central portion of the cooking face plate 15 but also the end portion, the food placed on the cooking face plate is uniformly and sufficiently transmitted with heat, the set temperature is efficiently maintained, and the food is evenly distributed. There is no occurrence of uneven baking due to heating.

  In addition, the cooking plate 1 of the present embodiment showed a five-layer laminated structure including the heat receiving plate 11, the first graphite sheet 12, the heat storage body 13, the second graphite sheet 14, and the cooking face plate 15. The number of layers is not limited to this. For example, the above-described effect of the present invention can be further exerted by further laminating not only the third, fourth, or more graphite sheet layers or one layer but also a plurality of layers of the heat storage elements 13. .

  Moreover, although this embodiment disclosed the heating-cooking board 2 of the laminated structure which piled up the rectangular metal plate etc. on account of description, it is not necessarily limited to this shape. Depending on the application and shape of the griddle device, a cooking plate having an arbitrary shape including a circular or elliptical shape is included in the scope of the present invention. The material of the cooking face plate 15 is not limited, and a stainless plate or the like may be used to prevent rust in addition to the use of the SS400 plate.

  Moreover, although the example of this embodiment using the graphite sheets 12 and 14 made from Toyo Tanso in which the thermal conductivity in the plane direction is 40 times (2 digits times) the thermal conductivity in the thickness direction has been described, It is also possible to appropriately employ a graphite sheet having a thermal conductivity anisotropy with a conductivity ratio of one digit or three digits or more. Furthermore, the graphite sheets 12 and 14 do not have to be arranged so as to cover the entire plane of the heating cooking plate 2 in a single sheet shape. For example, each graphite sheet is divided into unit units, for example, for each partial gas burner (or further part of the partial gas burner), so that the effect of the present invention is exerted on a part of the cooking plate 2. Also good.

  In addition, although the present Example demonstrated using the some partial gas burner, the number of partial gas burners is determined according to the magnitude | size of a cooking-by-heating board, and there may be a single partial gas burner. Further, although a gas-type flame burner was used as a heat source, the characteristics of the cooking plate itself with a multi-layer structure according to the present invention may be an electric heat source such as a general coil heater or a sheathed heater, The effect of the present invention is that the heat receiving plate heated from an arbitrary electric heat source is in the direction from the bottom to the top with respect to the cooking face plate, and the planar heat spread in each plate layer of the laminated structure is remarkably excellent. There is no.

DESCRIPTION OF SYMBOLS 1 Burner 2 Cooking plate 3 Oil pan 4 Chimney cover 5 Power switch 6 Select switch 7 Zone power switch 8 Temperature controller 9 Operation box cover 10 Griddle 11 Heat receiving plate 12 First graphite sheet 13 Heat storage body 14 Second graphite Sheet 15 Cooking face plate 16 Threaded member (bolt and nut)

Claims (4)

A heat receiving plate that receives heat input from a heating means for heating an object to be heated;
A first heat conductive plate placed above the heat receiving plate and receiving heat from the heat receiving plate, utilizing the heat conductivity characteristic that the thermal conductivity in the vertical direction is higher than the thermal conductivity in the plane direction. And the first heat conduction plate for promoting heat transfer in the surface direction,
A heat storage plate placed above the first heat conduction plate for accumulating heat transmitted from the first heat conduction plate;
A second heat conduction plate placed above the heat storage plate and receiving heat from the heat storage plate, utilizing the heat conductivity characteristic that the heat conductivity in the vertical direction is higher than the heat conductivity in the plane direction And the second heat conduction plate for promoting heat transfer in the surface direction,
A cooking face plate placed above the second heat conducting plate and receiving heat from the second heat conducting plate;
The cooking appliance which comprises the heating-cooking board comprised including the lamination.   The heating means supplies heat to the heat receiving plate so that the surface temperature of the cooking face plate can be identified by a high temperature portion and a low temperature portion, and the high temperature portion corresponds to the center and the back side from the center of the cooking plate. The cooking device according to claim 1, wherein the low temperature portion corresponds to a front side of the cooking plate.   The cooking device according to claim 1, further comprising a plurality of screwing members between the cooking face plate and the heat receiving plate to cope with thermal deformation of the cooking plate.   The heat | fever reflection member was made to adhere to the surface or back surface of at least any one of the said heat receiving plate, the said 1st heat conductive plate, the said heat storage plate, the said 2nd heat conductive plate, and the said cooking surface plate. The cooking appliance according to any one of the above.

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