JP2017023002A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heating cooker capable of rapidly cooking a cooked object placed on a heating plate without baking unevenness.SOLUTION: A heating cooker includes: a heating chamber 18; a non-metallic heating plate 31 that is arranged inside the heating chamber and where a cooked object is placed; heating means for heating the heating plate; temperature sensors for detecting the temperature of the heating plate; a control section for controlling an input power amount to the heating means on the basis of temperature data of the heating plate detected by the temperature sensors. As the heating means, upper heaters 61 arranged to face the heating plate are arranged on the upper side of the heating chamber, lower heaters 41 arranged on a heater support plate 42 constituting the bottom part of the heating chamber are arranged on the lower side of the heating plate. At least the two temperature sensors 44, 45 for detecting the temperature of different areas in the heating plate are arranged as the temperature sensors.SELECTED DRAWING: Figure 1

Description

  The present application relates to a heating cooker that cooks a food to be cooked placed on a heating plate with a heater, and in particular, to prepare a pizza or the like deliciously in a short time with a heating plate having a high heat storage property. It is related with the heating cooker which can do.

  2. Description of the Related Art A heating cooker that cooks an object to be cooked placed on a heating plate with an electric heater, such as a hot plate, an electric oven, and a toaster, has become widespread. Moreover, also in the microwave oven of an electromagnetic induction heating system, the microwave oven provided with the function as an electric oven by carrying an electric heater is commercialized.

  As a cooking device for heating an object to be cooked with such an electric heater, a pizza kiln whose main purpose is to bake pizza deliciously has been put into practical use. A heating cooker as a conventional electric pizza kiln includes a substantially rectangular parallelepiped heating space (heating chamber) in which electric heaters are arranged in both the upper and lower sides of a heating plate, Delicious pizza is baked by adopting a configuration with a hot air shielding plate (see Patent Document 1) or a configuration with a turntable that rotates while the pizza is placed (see Patent Document 2) as countermeasures against temperature changes. It is something that can be done.

JP 2006-296237 A JP 2009-005593 A

  However, in the electric pizza kiln as the conventional heating cooker, although attention has been paid to the overall temperature uniformity in the heating chamber, the temperature distribution of the heating plate on which the cooking object is placed is special. No measures were taken. Of course, it is important to manage the temperature distribution in the heating chamber, but if the temperature distribution on the heating plate on which the pizza dough, which is to be cooked, is directly placed is uneven, it will adversely affect the baking of the cooked pizza. Can not bake delicious pizza.

  The present disclosure is for solving such a problem of the prior art, can further uniform the temperature distribution of the heating plate, and has no unevenness in baking the food placed on the heating plate. And it aims at obtaining the heating cooker which can cook rapidly.

  In order to solve the above problems, a heating cooker disclosed in the present application includes a heating chamber, a non-metallic heating plate placed in the heating chamber, on which an object to be cooked is placed, and heating for heating the heating plate. Means, a temperature sensor for detecting the temperature of the heating plate, and a controller for controlling the amount of electric power supplied to the heating means based on temperature data of the heating plate detected by the temperature sensor, As a means, an upper heater disposed above the heating chamber so as to face the heating plate, and a heater support plate that is below the heating plate and forms the bottom of the heating chamber. The temperature sensor includes at least two temperature sensors that detect temperatures of different regions of the heating plate.

  The cooking device disclosed in the present application includes at least two temperature sensors, and can detect temperatures of two or more different regions of the heating plate. For this reason, the temperature of the heating plate at the time of preheating before cooking or at the time of cooking can be grasped more accurately, and the amount of electric power supplied to the heating means can be controlled by the control unit.

It is a perspective view which shows the whole heating cooker shape concerning embodiment. It is a perspective view showing the state where the door of the cooking-by-heating machine concerning an embodiment was opened. It is a disassembled perspective view for demonstrating the structure of the heating cooker concerning embodiment. It is a principal part disassembled perspective view for demonstrating arrangement | positioning of the lower heater of the heating cooker concerning embodiment. It is a top view for demonstrating the structure of the heater support plate used for the heating cooker concerning embodiment. It is a disassembled perspective view for demonstrating the structure of the heating plate used for the heating cooker concerning embodiment. It is sectional drawing for demonstrating the structure inside the cooking-by-heating machine concerning embodiment.

  A heating cooker disclosed in the present application includes a heating chamber, a non-metallic heating plate placed in the heating chamber on which an object to be cooked is placed, heating means for heating the heating plate, and the heating plate. A temperature sensor that detects a temperature; and a control unit that controls an amount of electric power supplied to the heating unit based on temperature data of the heating plate detected by the temperature sensor, and the heating unit includes: An upper heater disposed on the upper side so as to face the heating plate; and a lower heater disposed on a heater support plate below the heating plate and constituting the bottom of the heating chamber. The temperature sensor includes at least two temperature sensors that detect temperatures of different regions of the heating plate.

  The cooking device according to the present disclosure includes the above-described configuration, so that two different temperature sensors can simultaneously grasp the temperatures of different regions of the heating plate, and based on the obtained temperature data of the heating plate, The controller can control the amount of input power supplied to the upper heater and the lower heater to maintain the temperature of the heating plate in a more uniform state. As a result, it is possible to obtain a heating cooker that can cook the food to be cooked quickly and uniformly with the temperature of the heating plate in a desired state both during preheating and during cooking.

  In the cooking device according to the present disclosure, the temperature sensor detects a temperature of a region of the heating plate that has a large amount of heat supplied from the lower heater during cooking, and the lower portion during cooking. It is preferable to include a second temperature sensor that detects the temperature of the region of the heating plate with a small amount of heat supplied from the heater. By doing in this way, the temperature change of the heating plate according to the amount of heat supplied from the lower heater can be detected accurately, and accurate temperature control of the heating plate can be realized.

  The lower heater is configured as an annular heater, the first temperature sensor detects the temperature of the heating plate located inside the annular heater, and the second temperature sensor is located outside the annular heater. It is preferable to detect the temperature of the heating plate located. By doing in this way, the temperature control of the heating plate which respond | corresponds suitably with circular to-be-cooked objects, such as a pizza, can be performed efficiently.

  Further, the heater support plate has a bottom surface and a side wall portion formed so as to surround the periphery of the bottom surface, and the back surface of the heating plate abuts on an upper end portion of the side wall portion of the heater support plate. A lower heating space which is a closed space is formed by the heater support plate and the heating plate, and the lower heating heater is provided on either the bottom surface of the heater support plate or the back surface of the heating plate. In contrast, it is preferable that they are arranged in the lower heating space via a predetermined gap. By doing in this way, since the calorie | heat amount of a lower heater is transmitted to a heating plate as radiant heat via the air in a lower heating space, the nonuniformity of the temperature distribution of a heating plate can be reduced.

  Furthermore, a heater peripheral wall portion standing from the bottom surface is formed around a portion of the heater support plate where the lower heater is disposed, and is formed on the upper end of the heater peripheral wall portion and the heater support plate. It is more preferable that a predetermined interval is formed between the mounted heating plate and the back surface. By doing in this way, the area | region of the heating plate center part can be heated with more calorie | heat amount.

  Hereinafter, the cooking device disclosed in the present application will be described with reference to the drawings.

(Embodiment)
Below, the electric pizza kiln for business which can bake a pizza as a to-be-cooked object is illustrated and demonstrated as embodiment of the heating cooker disclosed by this application. In addition, the electric pizza kiln for business exemplified below has a configuration in which pizzas are baked one by one.

  FIG. 1 is a perspective view showing an appearance of a heating cooker according to the present embodiment. In FIG. 1, the door for putting in and out the heating plate which mounted the to-be-cooked object is shown in the closed state.

  FIG. 2 is a perspective view showing the appearance of the heating cooker according to the present embodiment, and shows a state in which a door for taking in and out a heating plate on which an object to be cooked is opened is opened.

  As shown in FIG. 1, the electric pizza kiln that is a heating cooker according to the present embodiment has a shape in which the shape seen from the front side (from the direction of arrow A) on the left front side is convex upward. The upper portion 10 having a substantially semicircular shape (the upper end portion is planar) and the base portion 20 having a horizontally long rectangular front shape located below the upper portion 10 are configured. In the electric pizza kiln according to the present embodiment, the same cross-sectional shape is maintained in the depth direction, and the whole is a so-called kamaboko shape.

  In the electric pizza kiln according to this embodiment, the volume of the upper part of the heating chamber formed inside the upper part 10 can be reduced by making the overall shape into such a kamaboko shape. As a result, in the electric pizza kiln of the present embodiment, a good heat pool can be formed in the upper part of the heating chamber, the difference in temperature distribution in the heating chamber can be reduced, and the amount of heat required for cooking by heating. Can be reduced.

  On the front side of the upper portion 10 is disposed a door 11 that can be opened and closed toward the front front lower side by a hinge mechanism (not shown in FIG. 1). Note that the support portion 49 (see FIG. 4) of the hinge mechanism to which the door 11 is fixed is formed on the upper surface of the front end portion of the base portion 20. The door 11 is formed with a handle 12 at the top thereof that is gripped when the user opens and closes the door 11.

  Although the door 11 is mainly composed of a metal member such as an aluminum alloy, a transparent member 13 that is resistant to heat, such as heat-resistant glass, is fitted in the center of the front surface of the door 11, and the user closes the door 11. The state of the pizza in the middle of cooking in the heating chamber 18 (see FIG. 2) can be seen even in the heated state. In addition, in the electric pizza kiln of this embodiment, the door 11 has a thickness of about 20 mm to 50 mm as an example, and in a peripheral part other than the window part in which the transparent member 13 is arranged, a metal member constituting the outer shell Between them, a heat insulating material such as glass wool is filled. Thus, by arranging the heat insulating material inside the door 11, it is possible to effectively prevent the heat inside the heating chamber 18 from escaping to the outside through the door 11 portion.

  As shown in FIG. 2, in a state where the door 11 is completely released, the inner surface 14 of the door 11 is slightly lower than the height of the mounting surface 15 of the heating plate assembly 30 in the bottom surface portion of the heating chamber 18. It becomes. For this reason, the user can easily put the heating plate assembly 30 in and out of the bottom portion of the heating chamber 18 with the door 11 released.

  In the electric pizza kiln of the present embodiment, on the inner surface 14 side of the door 11, the periphery of the transparent member 17 is covered with an opaque metal plate 16, and the state inside the heating chamber 18 can be confirmed from the outside of the door 11. The range is only the range of the transparent member 17 inside the door 11.

  Returning to FIG. 1, a chimney 14 is formed in the ceiling portion, which is the upper surface of the upper portion 10, to discharge excess steam components in the heating chamber 18 to the outside. In addition, when the flow path of the air in the chimney 14 is too large, the temperature in the heating chamber 18 is undesirably lowered by the air discharged from the chimney 14, and thus the air flow path formed in the chimney 14 It is preferable that the size (flow channel cross-sectional area) is appropriately determined within a range where such a temperature decrease does not occur.

  As shown in FIG. 1, on the front side of the base portion 20 in the electric pizza kiln of the present embodiment, there is an operation unit 21 that allows the user to operate the electric pizza kiln and check the operating state. Is arranged.

  The operation unit 21 displays an operation button and an operation dial 22 for instructing to turn on / off the electric pizza kiln, starting cooking, and setting a cooking time, and an operation state of the electric pizza kiln. A display lamp 23 and the like are arranged. In FIG. 1, only two operation dials 22 and one display lamp 23 are illustrated as a configuration example of the operation unit 21, but it goes without saying that the configuration of the operation unit 21 is not limited to this. . In the configuration of the operation unit 21, the number of operation dials 22 and display lamps 23 can be arbitrarily set, as well as other switches such as slide switches and push switches, buttons, the temperature in the heating chamber, and timer cooking Various operation members and display members used as an operation unit of an electric device such as a display panel that displays numerical information such as the remaining time can be arranged.

  In the electric pizza kiln according to the present embodiment, the operation circuit board 91 (see FIG. 7) on which various electric circuit components such as the operation dial 22 and the display lamp 23 arranged in the operation unit 21 are mounted is provided in the operation unit. 21 is disposed inside. In addition to the operation circuit board 91, a main circuit board 92 (see FIG. 7) on which a control unit and a power circuit for performing power control and operation control of the entire electric pizza kiln are mounted is disposed inside the operation unit 21. Has been.

  On the side surface of the base portion 20, an air hole 24 for communicating the inside of the base portion 20 and the external space is formed. In addition, four leg portions 25 that support the entire electric pizza kiln are disposed on the bottom surface side of the base portion 20.

  Next, the structure inside the electric pizza kiln of this embodiment and each member which comprises the electric pizza kiln of this embodiment are demonstrated.

  FIG. 3 is an exploded perspective view of the electric pizza kiln according to the present embodiment. In FIG. 3, the heating plate (assembly) is omitted.

  As shown in FIG. 3, the electric pizza kiln according to the present embodiment includes a lower unit 40 having a door 11 attached to an upper portion on the front side so as to be openable and closable, and an upper surface of the lower unit 40. The furnace wall plate 50 constituting the part, the heater unit 60 fixed to the upper ceiling part of the furnace wall plate 50, the heater unit 60 is sandwiched between the furnace wall plate 50 and the side surface of the lower unit 40 and the electric pizza kiln A cover plate 70 that covers the entire surface including the back surface portion is provided.

  The lower unit 40 is configured as a flat rectangular frame, and constitutes the base portion 20 of the electric pizza kiln of the present embodiment. The door 11 described above is fixed to the upper end portion on the front side of the lower unit 40 so as to be rotatable by a hinge mechanism. An operation unit 21 is disposed on the front side portion of the lower unit 40, and a control unit that controls the operation of the entire electric pizza kiln is mounted inside the operation unit 21.

  On the upper surface portion of the lower unit 40, a heater support plate 42 having a lower heater 41 serving as a second heating means disposed on the upper surface thereof is disposed.

  In the electric pizza kiln of the present embodiment, the lower heater 41 is composed of two annular heaters, an inner annular heater 41a and an outer annular heater 41b, which are arranged substantially concentrically.

  The heater support plate 42 is a member that forms the heating chamber 18 together with the furnace wall plate 50 disposed above and constitutes the bottom of the heating chamber 18. The heater support plate 42 includes a bottom surface 42 a on which the lower heater 41 is placed, and a side wall portion 42 b that is formed around the bottom surface 42 a and surrounds the entire periphery of the side portion of the lower heater 41. Further, on the bottom surface 42 a of the heater support plate 42, a heater peripheral wall 43 surrounding the portion where the lower heater 41 is disposed, a first temperature sensor 44, and a second temperature sensor 45, Is arranged. The details of the lower heater 41 and the heater support plate 42 arranged on the upper surface of the lower unit 40 will be described later.

  In the electric pizza kiln described in the present embodiment, the lower unit 40 is configured as a frame-like object made of a metal material such as stainless steel or a steel plate, and corresponds to the lower part of the heating chamber 18 in the lower unit 40. A cavity 46 is formed in a lower part of the heater support plate 42 which is a part. In addition, as for the three side surfaces located in the both sides and the back (back side) of the lower unit 40, all have the structure which the bottom part of the cover plate 70 covers from the outside.

  Air holes 24 described with reference to FIG. 1 are formed in the skirt portions on both sides of the cover plate 70 corresponding to the side portions of the cavity 46. Although not appearing in FIG. 3, rear air holes are formed in the rear hem portion of the cover plate 70 as well as the side air holes 24. Further, a large number of air holes 48 are formed in the bottom member 47 of the lower unit 40. In addition, an air cooling fan 71 for forcing outside air into the cavity 46 is formed at one skirt portion of the cover plate 70. By forcibly taking in the outside air having a low temperature by the air cooling fan 71 and generating an air flow in the cavity 46, the temperature rise in the cavity 46 due to the heat of the lower heating unit 41 can be reduced. As a result, the circuit board disposed inside the operation portion 21 formed facing the cavity 46, the terminal portion of the lower heater 41 disposed in the cavity 46 and the surrounding electrical wiring, and the lower portion Circuit components such as a power cord (not shown) extending from the rear side of the unit 40 to the outside can be protected from a situation where they are exposed to an undesirably high temperature.

  The furnace wall plate 50 is a metal plate such as a stainless steel plate, and includes a side plate portion 51 that forms an upwardly convex curved surface and a back plate portion 52 that is formed so as to close the curved surface shape. Has been. A side fixing plate 51 a extending outward is formed at the lower end portion of the side plate portion 51, and a rear fixing plate 52 a extending rearward is formed at the lower end portion of the rear plate portion 52. The side fixing plate 51a and the back surface fixing plate 52a are fixed in a state where the lower surfaces of the side fixing plate 51a and the rear surface fixing plate 52a face the peripheral portion of the upper surface of the lower unit 40. Thus, the furnace wall plate 50 is fixed to the upper surface of the lower unit 40, so that the inner surface of the furnace wall plate 50 forms the furnace wall of the heating chamber 18.

  A front plate portion 53 extending upward is formed on the front side of the furnace wall plate 50. When the cover plate 70 is fixed to the lower unit 40 so as to cover the outside of the furnace wall plate 50, the edge of the front side (front side) of the cover plate 70 is the front plate of the furnace wall plate 50. 53 abuts on the outer end of 53. Further, the side fixing plate 51 a and the back fixing plate 52 a of the furnace wall plate 50 are fixed to the upper surface of the lower unit 40, so that the space between the outer surface of the furnace wall plate 50 and the inner surface of the cover plate 70 is A predetermined gap corresponding to the width of the front plate 53, the side fixing plate 51a, and the back fixing plate 52a is formed. In the electric pizza kiln of the present embodiment, the gap between the furnace wall plate 50 and the cover plate 70 is filled with a heat insulating member (not shown) such as glass wool. Thus, by filling the heat insulating member between the furnace wall plate 50 corresponding to the wall portion of the heating chamber 18 and the cover plate 70 constituting the outer surface of the electric pizza kiln, the heat inside the heating chamber 18 is reduced. It becomes difficult to escape to the outside space of the electric pizza kiln. As a result, in the electric pizza kiln of the present embodiment, the temperature in the heating chamber 18 can be stabilized, the preheating time can be shortened, and the amount of heat necessary to be applied from the heating means during cooking can be reduced. This makes it possible to bake more delicious pizzas and reduce the power consumption of electric pizza ovens.

  In addition, the magnitude | size of the clearance gap between the furnace wall plate 50 and the cover plate 70 can be about 20 mm to 50 mm as an example. In addition to glass wool, a heat-resistant resin wool material, foam material, or a mica plate can be used as the heat insulating material filled in the gap.

  A planar opening 54 formed so as to connect the side plate portions 51 curved in the outward direction and arranged in the left-right direction is formed in an upper portion corresponding to the ceiling portion of the furnace wall plate 50. A frame-like flat portion 55 is formed around the opening 54 formed on the upper surface of the furnace wall plate 50, and the heater unit 60 is placed on the flat portion 55.

  The heater unit 60 includes two radiant heaters 61 as upper heaters disposed in the heating chamber 18 and both ends of the radiant heater 61 so that the two radiant heaters 61 can be held in parallel. And a pair of connecting members 62 that connect each other to form a rectangular frame as a whole.

  As the radiation heater 61, various heaters that can radiate high-temperature heat, such as a carbon lamp heater, a halogen lamp heater, a quartz glass heater, and a Kolce heater, can be employed. Moreover, the output of a radiation type heater can use the thing of 400W to 550W per one as an example.

  The interval between the two radiation heaters 61 in the heater unit 60 is narrower than the opening width of the opening 54 above the furnace wall plate 50, and the radiation is performed with the heater unit 60 placed on the flat portion of the furnace wall plate 50. A type heater 61 is exposed in the heating chamber 18. In addition, by placing the heater unit 60 on the flat portion 55 around the upper opening 54 of the furnace wall plate 50, the heater unit 60 is disposed on the bottom portion of the radiant heater 61 and the heating chamber 18 in the depth direction of the heating chamber 18. The upper surface of the heating plate is parallel. As a result, in the electric pizza kiln of the present embodiment, the heating plate disposed in the heating chamber 18, the pizza dough that is the cooking object placed on the heating plate, and the radiant heater 61 that is the upper heater. Are opposed to each other while being kept parallel to each other. In this way, the radiant heat from the upper heater can be radiated and supplied more uniformly to the food on the heating plate.

  Although not shown in FIG. 3, a heat reflection plate is disposed above the radiant heat heater 61 of the heater unit 60, and the radiant heat released from the radiant heat heater 61 is placed on the heating plate. Reflected toward the bottom of the heating chamber 18. By doing in this way, the radiant heat from the radiant heat heater 61 can be efficiently supplied to the to-be-cooked object on a heating plate. Further, a cover member 93 (see FIG. 7) that constitutes the highest portion of the ceiling of the heating chamber 18 is disposed further above the heat reflecting plate. The cover member 93 is formed with a flow path connected to the chimney 14.

  The cover plate 70 is a member that is formed of a metal plate such as a stainless steel plate or a plated steel plate and constitutes an outer portion of the electric pizza kiln.

  In the electric pizza kiln of the present embodiment, a fixing portion 72 extending inward is formed at the open end (lower end) of the cover plate 70, and this fixing portion 72 is used as the bottom surface of the lower unit 40. The entire outer shell including the upper portion 10 and the base portion 20 of the electric pizza kiln can be configured by turning around and fixing with screws or the like. In the present embodiment, the cover plate 70 is an integral one that covers not only the side surface of the electric pizza kiln but also the back surface side, but the cover plate 70 has a substantially inverted U shape that covers the side surface portion. The shape portion and the kamaboko-shaped plate member covering the back surface can be formed as separate members and attached separately. Further, the range covered by the cover plate 70 can be kept within the range of the upper portion 10 to the outside of the furnace wall plate 50, and the side surface of the lower unit 40 can be divided so as to be covered with another cover member. As described above, when the side portion and the back portion, or the upper portion and the base portion are configured to be covered with separate cover members, the workability in attaching the cover plate 70 is improved. It is necessary to firmly close the gap between the cover members so that the heat in the heating chamber 18 does not escape.

  In the cover plate 70 of the electric pizza kiln of the present embodiment, the air holes 24 for mitigating the temperature rise inside the lower unit 40 are located at the side surface (rear surface) of the lower unit 40 as described above. The blower fan 71 is formed and arranged.

  Next, the shape of the upper surface of the lower unit constituting the bottom surface portion of the heating chamber in the electric pizza kiln according to the present embodiment will be described, including the positional relationship with the heating plate placed on the lower unit.

  FIG. 4 is a divided perspective view showing the positional relationship between the heating plate and the lower unit, and shows the positional relationship in a state where the heating plate is placed at a predetermined position on the lower plate.

  FIG. 5 is a plan view showing an upper surface which is a surface on the side where the heating plate of the lower unit is placed. Furthermore, FIG. 6 is an exploded perspective view showing the configuration of the heating plate.

  As shown in FIG. 4, in the electric pizza kiln of the present embodiment, the heating plate assembly 30 is placed at a predetermined position on the heater support plate 42 arranged on the upper surface of the lower unit 40 and is a heating plate. During cooking of pizza, which is an object to be cooked on the plate body 31, the upper heater 61 shown in FIG. 3 and the lower heater 41 (41a, 41b) arranged on the heater support plate 42 are used. Heat is applied from both the upper and lower surfaces and cooking is performed.

  In addition, in the state which opened the door 11 which is not illustrated in FIG. 4, so that the heating plate assembly 30 inserted from the front side of an electric pizza kiln is mounted in the correct position with respect to the lower heater 41, Around the area where the heater support plate 42 is disposed on the upper surface of the lower unit 40, a pair of sides for regulating the position of the heating plate assembly 30 inserted from the front in the lateral direction (left and right direction with respect to the insertion direction). A rail 81 and an end rail 82 that regulates the position of the heating plate assembly 30 in the depth direction (the same direction as the insertion direction) are formed to protrude.

  As shown in FIGS. 4 and 5, the lower heater 41 is an annular electric heater arranged concentrically. In the electric pizza kiln of the present embodiment, the small diameter heater arranged on the inner side is used. Two annular heaters, a first annular heater 41a and a large-diameter second annular heater 41b arranged outside, are provided. In addition, each annular heater 41a, 41b can be comprised with an incoloy heater, IH heater, a sheathed heater, etc., and an output can be 200W-250W. For example, the inner annular heater 41a can have a diameter of 9 cm and the outer annular heater 41b can have a diameter of 16 cm.

  The heater support plate 42 includes a bottom surface 42a where the lower heater 41 is disposed, and a side wall portion 42b formed so as to surround the portion where the lower heater 41 is disposed around the bottom surface 42a. Moreover, the upper end part of the side wall part 41b is equipped with the plane part 42c used as the mounting surface 15 formed so that it might spread continuously outside.

  The height of the side wall part 42b of the heater support plate 42 is such that when the heating plate assembly 30 is placed on the flat part 42c, the upper surface of the plate body 31 on which the cooking object is placed in the heating plate assembly 30. The back surface 31b, which is the surface on the side different from 31a, has such a height that it can have a predetermined gap without contacting the lower heater 41. Further, the first annular heater 41a and the second annular heater 41b are both supported by the support legs 83 and 84, so that a predetermined gap is also maintained between the bottom face 42a of the heater support plate 42. Can be done. In this way, the lower heater 41 is arranged in a hollow state except for the portions that are in contact with the support legs 83 and 84.

  On the bottom surface 42a of the heater support plate 42, a second annular heater having a large diameter is disposed so as to surround an arrangement region where the first annular heater 41a and the second annular heater 41b are arranged. A heater peripheral wall 43 is erected from the bottom surface 42a so as to surround the periphery of 41b. The heater peripheral wall 43 is preferably formed in an annular shape in plan view, and is preferably arranged concentrically with the two annular heaters 41a and 41b. The height of the heater peripheral wall 43 is such that the upper end thereof does not come into contact with the back surface 31 b of the plate body 31 when placed on the heater support plate 42.

  A first temperature sensor 44 that detects the temperature of the plate body 31 as one of at least two temperature sensors at the central portion of the concentric circle where the lower heater 41 (41a, 41b) is disposed. Is arranged. The arrangement position of the first temperature sensor 44 is not the central portion of the heating plate 30 as an assembly, but as shown in FIG. 4, the plate body on which the cooking object is placed in the heating plate assembly 30. This is the position of the center 31 c of 31. In the electric pizza kiln of the present embodiment, since the plate body 31 is substantially square, the position of the center 31 c of the plate body 31 is an intersection of diagonal lines of the plate body 31.

  Further, on the bottom surface 42 a of the heater support plate 42, a second temperature sensor 45 is disposed in the region outside the heater peripheral wall 43 as the other temperature sensor of at least two temperature sensors. . As described above, the first temperature sensor 44 surrounds the center of the concentric circle formed by the two annular sensors 41a and 41b, and the second temperature sensor 45 surrounds the arrangement area of the two annular heaters 41a and 41b. In the electric pizza kiln of the present embodiment, the temperature of the central portion of the plate main body 31 on which the object to be cooked is placed is set to the first temperature in the electric pizza kiln according to the present embodiment. The sensor 44 can detect the temperature of the peripheral portion of the plate main body 31 with the second temperature sensor 45.

  In the electric pizza kiln of the present embodiment, the first temperature sensor 44 and the second temperature sensor 45 are arranged on the bottom surface 42a of the heater support plate 42 in a state where both are biased upward. Yes. In addition, the first temperature sensor 44 and the second temperature sensor 45 are in a natural state in which no pressing force is applied from above, and the temperature detection portion that is the tip portion is higher than the height of the side wall portion 42b of the heater support plate 42. It is arranged so as to protrude further upward than the flat surface portion 42c formed continuously at the upper end portion of the side wall portion 42b. For this reason, in the electric pizza kiln of the present embodiment, when the heating plate assembly 30 is placed on the heater support plate 42, the temperature detection portions of the temperature sensors 44, 45 are fixed to the plate body 31 with a constant force. It will be pressed against the back surface 31b, and the temperature of the predetermined part of the plate main body 31 can be detected more accurately. Note that, as the first temperature sensor 44 and the second temperature sensor 45, various types of conventionally used temperature detection elements such as those using a resistance temperature detector and those using a thermocouple are used. be able to. Further, the temperature sensor is not limited to the contact type temperature sensor as exemplified above, and a temperature sensor that can detect the temperature of an object in a non-contact manner using the principle of a radiation thermometer can also be adopted. Further, even in the case of a contact-type temperature sensor, it is not limited to the one urged upward as exemplified above, and it is constituted by a linear member and can ensure a certain level of contact with the heating plate. Things can be used.

  As shown in FIG. 6, the heating plate assembly 30 used in the electric pizza kiln of the present embodiment includes a plate body 31 that is a non-metallic plate-like body, and an object to be cooked placed on the plate body 31. The upper surface cover 32 is held from the upper surface 31a side, and the back surface cover 33 is held from the back surface 31b side which is the surface opposite to the upper surface 31a. A spring member 34 that presses the plate main body 31 toward the upper surface cover 32 is disposed between the plate main body 31 and the rear surface cover 33, and the plate main body 31 is sandwiched between the upper surface cover 32 and the rear surface cover 33. Thus, when the heating plate as an assembly is configured, the plate main body 31 is not rattled.

  The plate main body 31 has a high thermal conductivity so that the pizza can be baked in a short time and more deliciously by sufficiently accumulating heat from the upper heater 61 and the lower heater 41 which are heating means. It is made of non-metallic material with high heat storage.

In the electric pizza kiln of the present embodiment, a carbon plate is used as the plate body 31. More specifically, the plate body 31 is a carbon plate obtained by solidifying a raw material such as carbon black having a purity of 99.9% or higher under a high water pressure of 50,000 tons and then firing it at 3000 ° C. for 90 days. The characteristics of the carbon plate thus obtained are as follows: density is about 2.01 g / cm ³ , specific heat is about 0.713 J / g · K at room temperature, and about 1.337 J / g at 300 ° C. K, thermal conductivity of about 188.1 W / m · K at room temperature, about 137.7 W / m · K at 300 ° C., thermal diffusivity of about 131.2 × 10 ⁻⁶ m ² / s at room temperature , About 51.2 × 10 ⁻⁶ m ² / s at 300 ° C.

  In addition, as a material of the plate main body 31 of the heating cooker concerning this application, the carbon plate provided with the characteristic different from the above can be used other than the carbon plate which has the characteristic specification illustrated above. Further, as a so-called clay pot material, a ceramic material used in a heating cooker, or a plate-like body formed by firing a mixture of various powder materials such as ceramic powder and glass powder or carbon powder can be used. Further, as long as it is a material capable of storing heat that is sufficient as a heating plate, for example, having a thermal conductivity higher than that of aluminum, a material containing a metal powder can also be used. In addition, as the plate main body 31, it is particularly preferable that the thermal conductivity is about 130 W / m · k or more from the viewpoint of enabling cooking of pizza in a short time.

  Moreover, in the electric pizza kiln of the present embodiment, it is assumed that one piece of pizza up to L size having a diameter of about 35 cm is assumed, and the plate body 31 has a rectangular shape in plan view with a side of 38 cm, The thickness is 7.5 mm.

  Moreover, as shown in FIG. 6, the plate main body 31 used for the electric pizza kiln of the present embodiment has a square four corner portion 31d cut off by 5 cm, and is strictly an octagon.

  Since the food to be cooked is a circular pizza, the area where the food to be cooked is actually placed in the plate body is a circular area in the center portion. For this reason, if the plate body has a circular shape having a diameter larger than that of the pizza, the pizza can be baked. However, since the temperature of the pizza dough as a material before cooking is low, even if the plate body is pre-heated in advance, placing the pizza before heating will cause the temperature of the plate body in the center part to drop rapidly. Become. At this time, by ensuring the area where the pizza that is not directly involved in cooking is not placed as a peripheral part, it is possible to suppress the temperature drop of the entire plate body by the amount of heat accumulated in the peripheral part. In particular, in the case of the electric pizza kettle according to the present embodiment, a non-metallic member such as a carbon plate having a high thermal storage property is used as the plate body, so that the pizza by the heat accumulated in the peripheral portion is placed. The temperature drop at the center portion can be eliminated in a short time.

  On the other hand, if the plate body is left square, the area (volume) of the peripheral region other than the central circular portion where the pizza is placed becomes too large, and it is necessary to add it when preheating or cooking the heating plate. There is a fear that the amount of heat becomes excessive. In this case, other problems such as an increase in power consumption and a longer cooking time occur. In consideration of these points, the plate body used in the electric pizza kiln according to the present embodiment is an octagon in which the four corners are cut off based on a square to ensure an appropriate capacity (volume) as the plate body. It is said. From the above viewpoint, the amount of cut-off at the four corners from the square is determined based on how much area should be secured as the other surrounding area for the circular part on which the pizza is placed. A preferable value may be appropriately determined in consideration of the amount of heat obtained from the above, the heat capacity depending on the material and thickness of the plate body, and the like.

  Moreover, the reason why the rectangular shape as a base is a square is that the vertical and horizontal lengths required as the central portion for placing a circular object to be cooked are the same, and are not a square but a vertical or horizontal direction. A long rectangular shape can be used. Furthermore, as a form to ensure the heat capacity of the peripheral part when placing the pizza dough on the central part, it is also possible to change the thickness of the central part and the peripheral part, without making the plate body rectangular A circular shape is also possible.

  In the electric pizza kiln of the present embodiment, the upper surface cover 32, the rear surface cover, and the 33 that constitute the heating plate assembly 30 are all formed of a metal material such as a stainless material.

  The top cover 32 has an opening 32a at the center. The opening 32 a is formed to be slightly smaller than the outer shape of the plate main body 31, and the upper surface cover 32 is in a state of covering the peripheral portion of the plate main body 31 only slightly when overlapped with the plate main body 31.

  The back cover 33 is also formed with an opening 33a at the central portion, but the size of the opening 33a of the back cover 33 is smaller than the opening 32a of the top cover 32, and in particular, around the back surface 31b of the plate body 31. It covers the part. In the upper surface cover 32, it is preferable that the plate body 31 appears as wide as possible when the pizza dough that is to be cooked is placed on the upper surface 31 a of the plate body 31. However, in the back cover 33, it is sufficient that the radiant heat of the lower heater 41 arranged on the back side is sufficiently supplied to the central portion of the plate body 31, and the plate body 31 is pressed against the top cover 32 side. This is because it is necessary to secure an area for arranging the spring member 34. The spring member 34 is held by a holding portion 33b formed around the opening 33a of the back cover 33.

  On both sides and the rear side of the back cover 33, bent portions 33c that are bent upward are formed. Further, a restricting portion 33d bent upward is formed by using the front end portion of the opening 33a, and the position of the plate body 31 is restricted by the bent portion 33c and the restricting portion 33d.

  Frame portions 32b bent upward are also formed on both side portions and the rear portion of the upper surface cover 32, and the upper surface cover 32 and the rear surface cover 33 are overlapped with the plate body 31 sandwiched therebetween. At this time, the frame portion 32 b comes into surface contact with the inner side of the bent portion 33 c of the back cover 33 to restrict the positions of the top cover 32 and the back cover 33 and to increase the rigidity of the heating plate assembly 30.

  A laterally long curved portion 32c is formed on the front side of the top cover 32 so that the user can hold the curved portion 32c when the heating plate assembly 30 is put in and out of the heating chamber 18.

  As described above, in the electric pizza kiln of the present embodiment, the heating plate assembly 30 is configured such that the plate body 31 that is a carbon plate is sandwiched between the upper surface cover 32 and the rear surface cover 33. Further, the plate body 31 is pressed against the upper surface cover 32 by the spring member 34. For this reason, the back surface 31b of the plate body 31 is slightly recessed when viewed from the back side, that is, the lower unit 40 with respect to the outer surface on the back surface side of the back cover 33 that is the back surface of the heating plate assembly 30. When placed on the top, it is positioned on the upper side.

  For this reason, even when the upper end position of the heater peripheral wall portion 43 formed on the bottom surface 42a of the heater support plate 42 and the upper end portion of the side wall portion 42 of the heater support plate 42 have the same height, In a state where the upper surface of the lower unit 40 is placed on the heater support plate 42, the back surface of the back cover 33 of the heating plate assembly 30 is in contact with the flat portion 42 c which is the upper end surface of the side wall portion 42 b of the heater support plate 42. In contrast, the back surface 31b of the plate body 31 and the upper end of the heater peripheral wall 43 are not in contact with each other, and a constant gap is formed between them.

  FIG. 7 is a cross-sectional view showing an internal state of the electric pizza kiln according to the present embodiment. FIG. 7 is a sectional side view of the electric pizza kiln viewed from the right side in a state where the door is closed and the heating plate is disposed inside and is cut along the center line in the left-right direction. FIG.

  In addition, in FIG. 7, about the structural member in the electric pizza kiln concerning this application demonstrated using FIGS. 1-3, the same code | symbol is attached anew so that the shape of each member and its positional relationship may be understood more easily. Show.

  As shown in FIG. 7, in the state of being placed on the heater support plate 42 of the lower unit 40, the flat portion 42 c formed around the back cover 33 and the heater support plate 42 of the heating plate assembly 30. , A lower heating space 94 is formed between the heating plate assembly 30 and the heater support plate 42 as a closed space in which a lower heater 41 is disposed as a heating means. It will be.

  For this reason, the radiant heat from the lower heater 41 can be efficiently transmitted to the plate body 31 without escaping outside the lower heating space 94. Furthermore, a heater peripheral wall 43 is formed around the lower heater 41 so that a slight gap is formed between the upper end of the lower heater 41 and the back surface 31b of the plate body 31. More of the radiant heat is transferred to the circular area at the center of the plate body 31, and a part of the heat is transferred to the lower heating space 94 in the peripheral area of the plate body 31. As a result, in the electric pizza kiln of the present embodiment, the radiant heat from the lower heater 41 can be concentrated on the central portion of the plate body 31 where the cold cooking object is placed on the upper surface 31a and the temperature tends to decrease. It is possible to reduce the temperature drop of the central portion of the plate body 31 when the object to be cooked is placed in combination with the high heat storage property of the plate body 31.

  In the electric pizza kiln of the present embodiment, the first temperature sensor 44 that measures the temperature of the central portion of the plate body 31 is used as the temperature sensor that measures the temperature of the plate body 31 at the position where the annular heater 41 is disposed. The one arranged at the center of the concentric circle is shown. In the electric pizza kiln of the present embodiment, the center of the annular heater 41 arranged concentrically coincides with the center of the plate body 31, and this portion of the plate body is heated by the lower heater 41. 31 is considered to be the region with the highest temperature. Therefore, when detecting the temperature data of the high temperature part in the plate body, it is most preferable to arrange the first temperature sensor 44 at the center position of the annular heater arranged concentrically. However, the temperature at the center position of the concentric circles may not be detected due to restrictions due to the shape and configuration of the heater support plate 42 and the shape of the back surface 31b of the plate body 31. In such a case, the temperature of the plate body 31 corresponding to the inside of the annular heater (the first annular heater 41a in the present embodiment) located on the innermost side among the plurality of annular heaters 41 is measured. If possible, the temperature in the high temperature region of the plate main body 31 can be detected even if it is not the exact center.

Further, in the electric pizza kiln of the present embodiment, the second temperature sensor 45 that measures the temperature of the peripheral portion of the heating plate is positioned outside the heater peripheral wall 43 disposed around the annular heater 41. The temperature of the plate body 31 is measured. As described above, the region inside the heater peripheral wall 43 is a region where the temperature is the highest during the operation of the lower heater 41. Therefore, the temperature of the plate body 31 in the peripheral region other than this region is measured. By doing so, it is possible to detect the temperature of a relatively low temperature region in the plate body 31.
In particular, when the food to be cooked is a circular pizza and the plate body 31 has a rectangular shape, it becomes a structure that prevents the temperature drop of the central portion by the amount of heat accumulated in the peripheral region as described above. It is preferable to detect the temperature at the position on the diagonal line of the plate body 31 as the peripheral portion.

  In addition, when a rectangular plate body is used, there are four diagonal regions that are assumed as peripheral regions. In this case, it is difficult to stabilize the temperature at the two positions located on the door 11 side while being placed on the plate support plate 42 under the influence of opening and closing of the door 11 such as when the heating plate assembly 30 is put in and out. There are concerns. For this reason, as long as it can be selected, the temperature of the diagonal area located on the far side opposite to the door 11 in the four diagonal areas of the plate body 31 is measured by the second temperature sensor 45. It is preferable to do.

  Thus, in the electric pizza kiln of the present embodiment, the temperature data of the central portion and the peripheral portion of the plate body 31 can be detected separately. For this reason, the control unit grasps the temperature distribution of the plate main body 31 and uses the first annular heater 41a having a small diameter and the second annular heater 41b having a large diameter as the upper heater 61 and the lower heater 41. It is possible to appropriately control the temperature distribution of the plate body 31 by individually adjusting the amount of power input to each of the plates.

  For example, at the start of preheating, the upper heater 61 is turned off, the first annular heater 41a is 80% power, the second annular heater 41b is 100% power, and when cooking pizza, the upper heater 61 is 100% power. Therefore, immediately after the start of cooking, the first annular heater 41a and the second annular heater 41b are both 50% in power, and the amount of electric power supplied to the first annular heater 41a is lowered as cooking progresses, and preheating is performed. In such a state, the upper heater 61 is turned off, the first annular heater 41a is turned off, the second annular heater 41b is set to 60% power, and so on. Thus, the amount of electric power supplied to the upper heater 61 and the two annular heaters 41a and 41b is controlled so that the temperature of the plate body 31 can be maintained at a temperature of 300 ° C. suitable for baking pizza. Can be adjusted.

  In particular, in the electric pizza kiln of the present embodiment, a carbon plate having a high heat storage property is used as the plate body 31. Therefore, preheating is performed for about 15 minutes when the power is first turned on, and the temperature of the plate body 31 is set to about 300. If it is set to ° C., one pizza can be cooked delicious in a short time of about two and a half minutes.

  As described above, the electric pizza kiln as a heating cooker according to this embodiment includes a plate body that is a non-metallic heating plate having high heat storage properties, and heats the heating plate from both the upper and lower sides. Heated by means of a heater. At this time, the temperatures of the central portion and the peripheral portion of the heating plate are detected by different temperature sensors, and the amount of electric power supplied to each heater is controlled based on the detected temperature data. For this reason, heating is performed at each stage of cooking of the cooking object, such as when the heating plate is preheated, when a low temperature cooking member is placed at the start of cooking, or when cooking is performed for a certain period of time. The temperature distribution of the plate can be maintained in a preferable state, and the food to be cooked can be cooked in a short time while being a low-power consumption heating cooker.

  In the above description, the side of the heating chamber is curved and the width becomes narrower as it goes upward. However, the heating chamber is a rectangular parallelepiped or a cube having substantially the same width in the vertical direction. It can also be a shape. Moreover, although the figure of the shape where the furnace wall of the back side of a heating chamber falls to the near side is shown as it goes upwards (FIG. 7), the furnace wall of the back side of a heating chamber is formed perpendicularly | vertically with respect to the bottom face. Moreover, it can also be set as the curved-surface shape which curves outside like a side wall.

  Moreover, in the said embodiment, although the two heaters of the same output number were arrange | positioned in parallel toward the back side from the near side of a heating chamber as an upper heater, the number of upper heaters was shown. One or three or more heaters can be used. Furthermore, when a plurality of heaters are used, heaters having different numbers of outputs can be used. Further, a plurality of heaters can be arranged at different heights with respect to the heater arrangement positions, particularly the arrangement height in the heating chamber. The arrangement direction of the upper heater can also be arranged in parallel to the door, that is, in the left-right direction when viewed from the door side.

  In the above description, an example in which two annular heaters are arranged substantially concentrically as the lower heater is shown, but the heater is not limited to an annular one, for example, a substantially rectangular heater or a plurality of folded portions. By passing through, it can be set as the structure which can heat the area | region on a surface with one heater. Further, the lower heater can have one or three or more structures.

  Even when an annular heater is used, the heater portion does not have to be an exact circle, and even if it has a shape with some irregularities and a shape with a chip at the end, Any heater capable of radiating heat may be used.

  Further, in the positional relationship between the heating plate and the lower heater, it is not necessary to make the center of the heating plate main body and the center position of the lower heater arrangement area exactly coincide with each other as in the above example. Furthermore, the center position of each heater in the case of arranging a plurality of annular heaters only needs to be approximately the same. In the positional relationship between the lower heater and the heating plate, the amount of heat supplied from the lower heater to the heating plate is free from inconvenience such as a large deviation according to the direction of the heating plate. Needless to say, it has a tolerance within a range in which an object can be cooked without noticeable unevenness.

  Further, as a temperature sensor for detecting the temperature of the heating plate (main body), in addition to the first temperature sensor for detecting the temperature of the central portion and the second temperature sensor for detecting the temperature of the peripheral portion, By arranging three or more temperature sensors, the temperature of each region of the heating plate can be detected in more detail and used to control the power input to the heater. However, the area of the heating plate for detecting the temperature by each of the plurality of temperature sensors includes the area where the amount of heat supplied from the lower heater is large and the lower area in relation to the lower heater arranged close to the heating plate. It is preferable to select the region where the amount of heat supplied from the heater is small and arrange the temperature sensor in order to make the temperature distribution of the heating plate more uniform by controlling the amount of electric power supplied to the lower heater.

  Moreover, in the said embodiment, the structure which clamped the plate main body which is a nonmetallic heating plate with the metal upper surface cover and back surface cover was illustrated. By doing in this way, the plate main body which is easy to produce a crack, a chip | tip, etc. can be protected when receiving the impact from the outside. Moreover, since a non-metallic plate main body lacks shape workability, the curved part etc. for hold | maintaining the heating plate as an assembly can be easily formed by covering with a metal cover member. However, if there is no problem with the strength and workability of the non-metallic heating plate (main body), there is no need to construct an assembly as a heating plate, and the heating plate body made of non-metallic material is used as it is. can do.

  In order to emphasize the beauty of the pizza kiln, the outer surface of the cover member constituting the outer shell is decorated with a brick pattern or the like, or the shape of the pizza kiln made of brick is further formed on the outer side of the cover plate. It is also possible to arrange the traced decorative appearance members in a stacked manner.

  In addition, in the said embodiment, the pizza kiln which bake a pizza as a to-be-cooked object was illustrated and demonstrated as a heating cooker which concerns on this application. However, the heating cooker of the present invention is not limited to an electric pizza oven dedicated to pizza cooking, but is put to practical use as a cooking cooker that cooks various items to be cooked such as bread, cookies, sponge cake, and other vegetables and meats. be able to. Moreover, it is not restricted to the business heating cooker illustrated above, A household heating cooker can also be implement | achieved as a more compact structure.

  In the following, some specific configuration examples of the heating cooker disclosed in the present application corresponding to the above-described forms described above will be described.

  First, the first configuration includes a heating chamber, a non-metallic heating plate that is placed in the heating chamber and on which an object to be cooked is placed, a heating unit that heats the heating plate, and a temperature of the heating plate. And a control unit that controls the amount of electric power supplied to the heating means based on the temperature data of the heating plate detected by the temperature sensor, and the heating means is an upper part of the heating chamber. An upper heater disposed so as to face the heating plate, and a lower heater disposed on a heater support plate that is below the heating plate and forms the bottom of the heating chamber, As the temperature sensor, a first temperature sensor that detects the temperature of the central portion of the heating plate and a second temperature sensor that detects the temperature of the peripheral portion of the heating plate are provided.According to this configuration, the temperature of the central portion of the heating plate can be separately grasped by the first temperature sensor, and the temperature of the peripheral portion of the heating plate can be separately grasped by the second temperature sensor. Based on the temperature data, the control unit can control the amount of electric power supplied to the upper heater and the lower heater to maintain the temperature of the heating plate in a more uniform state. As a result, it is possible to obtain a heating cooker that can cook the food to be cooked quickly and uniformly with the temperature of the heating plate in a desired state both during preheating and during cooking.

  Furthermore, as a second specific configuration example, in the heating cooker according to the present disclosure, the heating plate is rectangular in plan view, and the lower heater is substantially concentric with respect to the center of the heating plate. A plurality of annular heaters arranged, wherein the first temperature sensor detects the temperature of the heating plate located inside the annular heater arranged on the innermost side of the plurality of annular heaters; It is preferable that the second temperature sensor detects the temperature of the heating plate located outside the annular heater disposed on the outermost side of the plurality of annular heaters. By doing in this way, the temperature of the center part of a heating plate from which the influence of the heat from a lower heater differs, and a peripheral part can be grasped | ascertained more correctly.

  Further, as a third specific configuration example, in a configuration in which a heater peripheral wall portion standing from the bottom surface is formed around a portion of the heater support plate where the lower heater is disposed, It is preferable that the temperature sensor of 2 detects the temperature of the heating plate located outside the heater peripheral wall. By doing in this way, it is possible to detect the temperature of the peripheral region where the amount of heat from the lower heater is less likely to reach compared to the inside of the heater peripheral wall.

  As a fourth specific configuration example, the first temperature sensor and the second temperature sensor are disposed in a state of being biased upward from the bottom surface of the heater support plate, and the heating plate is When placed on the heater support plate, it is preferable that upper ends of the first temperature sensor and the second temperature sensor are in contact with the back surface of the heating plate. By doing in this way, the temperature of a heating plate can be detected more correctly.

  As a fifth specific configuration example, the heating plate is preferably a carbon plate formed by firing carbon black powder. By using it for this purpose, a heating plate having an extremely high heat storage amount can be realized.

  Furthermore, the ceiling of the heating chamber can have an arch shape curved upward. Moreover, the ceiling and the side surface forming the outer shell of the heating chamber can be constituted by a metal plate formed with a heat insulating material interposed therebetween.

  The heating cooker according to the present disclosure detects the temperature distribution of the heating plate having high heat storage characteristics and adjusts and controls the upper and lower heaters in the heating chamber, thereby shortening the food to be cooked while realizing low power consumption. You can cook deliciously in time. For this reason, it is useful as a heating cooker that performs various types of cooking for business use and home use, including a commercial electric pizza kettle.

18 Heating chamber 31 Plate body (heating plate)
41 Annular heater (lower heater)
42 heater support plate 44 first temperature sensor (temperature sensor)
45 Second temperature sensor (temperature sensor)
61 Radiation heater (upper heater)

Claims (5)

A heating chamber;
A non-metallic heating plate placed in the heating chamber and on which the object to be cooked is placed;
Heating means for heating the heating plate;
A temperature sensor for detecting the temperature of the heating plate;
A controller for controlling the amount of electric power supplied to the heating means based on the temperature data of the heating plate detected by the temperature sensor;
As the heating means, an upper heater disposed above the heating chamber so as to face the heating plate, and a heater support plate that is below the heating plate and forms the bottom of the heating chamber. And a lower heater
A heating cooker comprising at least two temperature sensors that detect temperatures of different regions of the heating plate as the temperature sensors.   The temperature sensor detects the temperature of the area of the heating plate that has a large amount of heat supplied from the lower heater during cooking, and the amount of heat supplied from the lower heater during cooking is small. And a second temperature sensor for detecting the temperature of the area of the heating plate. The lower heater is configured as an annular heater;
The first temperature sensor detects the temperature of the heating plate located inside the annular heater;
The cooking device according to claim 1 or 2, wherein the second temperature sensor detects a temperature of the heating plate located outside the annular heater. The heater support plate has a bottom surface and a side wall portion formed so as to surround the periphery of the bottom surface,
The heating plate is placed so that the back surface thereof is in contact with the upper end portion of the side wall portion of the heater support plate, and a lower heating space which is a closed space is formed by the heater support plate and the heating plate,
4. The device according to claim 1, wherein the lower heater is disposed in the lower heating space through a predetermined gap with respect to both the bottom surface of the heater support plate and the back surface of the heating plate. The cooking device according to crab.   A heater peripheral wall portion standing from the bottom surface is formed around a portion of the heater support plate where the lower heater is disposed, and is placed on the upper end of the heater peripheral wall portion and the heater support plate. The cooking device according to claim 4, wherein a predetermined gap is formed between the heating plate and the back surface.

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