JP6607379B2 - Cooker - Google Patents

Description

  The present application relates to a heating cooker that cooks an object to be cooked placed on a heating plate with a heater, and more particularly to a heating cooker that can cook pizza and the like deliciously in a short time.

  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

  In the electric pizza kiln as the above-mentioned conventional cooking device, the controller turns on / off the electric heater and adjusts the output at an appropriate timing while grasping the temperature in the heating chamber with a sensor. Temperature control is performed to achieve a predetermined temperature.

  In the case of electric pizza kilns, the main purpose is not for general home use but for business use. However, the heat cooker for business use and the heat cooker used for both business use and home use are compared with the home use cooker. Therefore, it is assumed that the use frequency per day is high and the use time is also long. For this reason, heating cookers that are expected to be used for business use are required to ensure a sufficient service life even under severer operating conditions than home cookers, and to provide stable operation during the service life. Yes.

  The present disclosure is for solving such problems of the prior art, and is capable of realizing a sufficient lifetime and stable operation even when the frequency of use per day is high and the usage time is long. The purpose is to obtain a cooking device.

  In order to solve the above problems, a heating cooker disclosed in the present application includes a heating chamber, a heating plate disposed in the heating chamber, on which an object to be cooked is placed, heating means for heating the heating plate, A temperature sensor that detects the temperature of the heating plate; and a control unit that controls the amount of electric power supplied to the heating unit based on temperature data of the heating plate detected by the temperature sensor, and is provided below the heating chamber. A circuit arrangement part is formed through a heat shielding plate, and a control circuit board on which electric circuit components constituting the control part are mounted is arranged in the circuit arrangement part.

  A heating cooker disclosed in the present application houses a control circuit board on which an electric circuit component constituting a control unit is mounted in a circuit arrangement unit, and a heating chamber via a heat shield plate between the heating chamber and a high temperature heating chamber. Place below. By doing in this way, it is possible to maintain the heating chamber at a predetermined temperature while keeping the temperature of the control unit that does not like to be high in a low state, while enabling cooking in a short time Durable and reliable cooking device can be realized.

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 disassembled perspective view for demonstrating the arrangement | positioning relationship between the lower heater and heating plate of the heating cooker concerning embodiment. It is a sectional side view for demonstrating the structure inside the cooking-by-heating machine concerning embodiment. It is the 1st horizontal sectional view for explaining the composition below the heating room of the cooking-by-heating machine concerning an embodiment. It is a 2nd horizontal sectional view for demonstrating the structure below the heating chamber of the heating cooker concerning embodiment. It is a front view for demonstrating the cross-sectional position of FIG. 6 and FIG. It is a disassembled perspective view for demonstrating the structure of a circuit arrangement | positioning part. It is a perspective view explaining the structure of a circuit arrangement | positioning part and a ventilation path.

  A cooking device disclosed in the present application detects a temperature of a heating chamber, a heating plate that is disposed 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. A temperature sensor; and a controller 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 a circuit is provided below the heating chamber via a heat shielding plate. A control circuit board on which an arrangement part is formed and an electric circuit component constituting the control part is mounted is arranged in the circuit arrangement part.

  The heating cooker according to the present disclosure includes the above-described configuration, and thus arranges the heating chamber and the circuit arrangement unit in which the control circuit board is accommodated, with the heat shielding plate interposed therebetween. be able to. For this reason, it is possible to maintain the heating chamber at a desired temperature while effectively preventing the heat of the heating chamber from being transferred to the electric circuit components constituting the control unit and becoming high temperature. As a result, the cooking device disclosed in the present application can cook the food to be cooked quickly and uniformly, and can obtain a cooking device having high durability and reliability.

  In the heating cooker according to the present disclosure, an electrical circuit component that is thermally connected to a heat sink and that serves as a heat source is mounted on the control circuit board, and heat dissipation fins of the heat sink are located outside the circuit arrangement portion. Preferably it is. By doing in this way, even if the electric circuit component mounted on the control circuit board includes an electric circuit component serving as a heat generation source, an undesired temperature rise in the circuit arrangement portion can be avoided.

  Further, a cavity portion having a side wall portion having an air hole communicating with the outside is formed in a region other than the circuit arrangement portion below the heating chamber, and the outside air is sucked into the cavity portion to blow air. Preferably, a cooling fan is provided. By doing in this way, the whole lower part of the apparatus separated from the heating chamber via the heat shielding plate can be maintained at a low temperature.

  Further, a cavity portion having a side wall portion having an air hole communicating with the outside is formed in a region other than the circuit arrangement portion below the heating chamber, and the outside air is sucked into the cavity portion to blow air. It is preferable that the radiating fin of the heat sink is disposed in a ventilation path that includes a cooling fan that guides wind from the cooling fan to the hollow portion. By doing in this way, the temperature of the electric circuit component used as the heat source in a circuit arrangement part can be lowered more effectively.

  In addition, a plurality of electrical circuit components serving as the heat generation source are mounted on the control circuit board, and the electrical circuit component serving as the heat generation source that is at a higher temperature is located above the wind from the cooling fan in the heat sink. It is preferable to arrange | position. In this way, even when a plurality of electric circuit components serving as heat generation sources are matched, the temperature can be effectively lowered.

  Moreover, it is preferable that the control circuit board is arranged on the upper surface side of the circuit arrangement portion with the mounting surface of the electric circuit component facing downward. By doing in this way, it can avoid that a foreign material adheres on a control circuit board and it becomes malfunctioning.

  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 state which closed the door for putting in and out the heating plate which mounted the to-be-cooked object is shown.

  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 in which 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. Has been placed.

  The operation unit 21 has an operation button and an operation dial 22 for the user to turn on / off the power of the electric pizza kiln, start cooking, and set the cooking time. The operation of the electric pizza kiln A display lamp 23 for displaying the status is 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, an operation circuit board 81 (see FIG. 5) on which various electric circuit components such as an operation dial 22 and a display lamp 23 arranged in the operation unit 21 are mounted is provided on the operation unit 21. Arranged inside. Along with this operation circuit board 81, a control unit that performs power control and operation control of the entire electric pizza kiln, a switching circuit that performs ON / OFF switching of power supply to the heater, etc. Is mounted on a control circuit board 82 (see FIG. 5).

  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 49 (FIG. 4). The operation unit 21 is disposed on the front side portion of the lower unit 40, and an operation circuit board 81 (see FIG. 5) and a control circuit board 82 (see FIG. 5) are accommodated inside the operation unit 21. A circuit arrangement portion 87 (see FIG. 5) is arranged.

  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 outer shell of 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 lower heater 41 and the heater support plate 42 disposed on the upper surface of the lower unit 40 will be described in detail later.

  In the electric pizza kiln described in the present embodiment, the lower unit 40 is configured as a frame-shaped structure made of a metal material such as stainless steel or a steel plate, and a portion corresponding to the bottom surface of the heating chamber 18 in the lower unit 40. In the lower portion of the heater support plate 42, a hollow portion 46, which is a space with little arrangement of members, is formed via a heat shielding plate 92 (see FIG. 5). Note that the three side surfaces located on both sides and the rear (back side) of the lower unit 40 are all configured to cover the hem portion of the cover plate 70 from the outside, and constitute the side wall of the hollow portion 46. Yes.

  The air holes 24 described with reference to FIG. 1 are formed in the skirt portion of the cover plate 70 corresponding to the side wall of the hollow portion 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.

  Further, an air cooling fan 71 for forcing outside air into the hollow portion 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 portion 46, the temperature rise in the cavity portion 46 due to the heat of the lower heating unit 41 can be reduced. As a result, the cavity portion 46 is a terminal of the circuit arrangement portion 87 (see FIG. 5) behind the operation portion 21 formed facing the cavity portion 46 or the terminal of the lower heater 41 disposed in the cavity portion 46. Protecting parts and surrounding electrical wiring (not shown), and power circuit components such as a power cord (not shown) extending from the rear side of the lower unit 40 to an undesired high temperature Can do.

  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. As described above, 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 serving 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 of the radiation 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 reflecting plate is disposed above the radiant heat heater 61 of the heater unit 60, and the heating plate is mounted with radiant heat released upward from the radiant heat heater 61. 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. 5) 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 addition, the cover plate 70 of the electric pizza kiln of the present embodiment is for reducing the temperature rise of the hollow portion 46 inside the lower unit 40 at the position that becomes the side surface (back surface) of the lower unit 40 as described above. An air hole 24 and a cooling fan 71 are 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 oven according to the present embodiment will be described including the positional relationship with the heating plate placed on the lower unit.

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

  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.

  The lower heater 41 is an annular electric heater arranged concentrically. In the electric pizza kiln of the present embodiment, the first annular heater 41a having a small diameter arranged on the inner side and the first annular heater 41a arranged on the outer side are arranged. Two annular heaters having a second annular heater 41b having a large diameter 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 portion 42b of the heater support plate 42 is such that when the heating plate assembly 30 is placed on the flat portion 42c, the back surface of the plate body 31 on which the cooking object is placed in the heating plate assembly 30. However, the height is such that a predetermined gap can be provided 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, so that a predetermined gap can be maintained between the bottom surface 42a of the heater support plate 42. It has become.

  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 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 is disposed at the central portion of the concentric circle where the lower heater 41 (41a, 41b) is disposed. The arrangement position of the first temperature sensor 44 is the center position of the plate body 31 on which the object to be cooked is placed. That is, it is the intersection position of diagonal lines of the substantially square plate body 31.

  In addition, a second temperature sensor 45 is disposed in a region outside the heater peripheral wall 43 on the bottom surface 42 a of the heater support plate 42. Thus, the first temperature sensor 44 is surrounded by the center of the concentric circle formed by the two annular heaters 41a and 41b, and the second temperature sensor 45 is surrounded by 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 simultaneously detect the temperature of the peripheral portion of the plate 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. For this reason, when the heating plate assembly 30 is placed on the heater support plate 42, the temperature detection portions of the temperature sensors 44 and 45 are pressed against the back surface of the plate body 31 with a constant force, The temperature of the predetermined portion 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. 4, 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 a stainless frame that holds the plate body 31. It is comprised with the body 32. FIG.

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. Furthermore, 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 metal powder or the metal material itself can be used as the plate body 31. 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.

  A horizontally long curved concave portion 33 is formed on the front side of the frame body 32 so that the user can hold the curved concave portion 33 when the heating plate assembly 30 is put in and out of the heating chamber 18.

  FIG. 5 is a cross-sectional view showing an internal state of the electric pizza kiln according to the present embodiment.

  FIG. 5 is a 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 the state is cut along the center line in the left-right direction. It is sectional drawing.

  In addition, in FIG. 5, about the structural member in the electric pizza kiln concerning this application demonstrated using FIGS. 1-4, the same code | symbol is attached anew so that the shape of each member and its positional relationship may be understood more easily. Show.

  In the electric pizza kiln of the present embodiment, the heater support plate 42 arranged on the upper surface of the lower unit 40 constitutes the bottom surface of the heating chamber 18.

  Further, below the heater support plate 42, a heat shielding plate 92 is provided that thermally partitions the interior of the electric pizza kiln into the heating chamber 18 and a space below the heating chamber 18. The heat shielding plate 92 can be formed of, for example, a stainless plate or a steel plate having a thickness of about 0.3 mm to 0.5 mm. As shown in FIG. 5, the heat shielding plate 92 of the electric pizza kiln of the present embodiment has a pallet shape surrounding the recessed bottom surface similar to the heater support plate 42 with a side wall portion. As long as the shielding plate 92 is a member that divides at least the space inside the electric pizza kiln, the shape of the shielding plate 92 is not limited, such as a flat plate. Further, from the functional aspect of shielding heat, the heat shielding plate 92 is preferably formed by a single plate-like body, but the whole may be a plate-like body as a combination of a plurality of parts.

  Under the heat shield plate 92, a circuit arrangement portion 87 in which the operation circuit board 81 and the control circuit board 82 are arranged is formed in the front part, and the air hole 24 is formed in the side part in the rear part as described above. A cooling fan 71 (where the propeller portion 73 is visible in FIG. 5) and a ventilation path for sending the air from the cooling fan 71 to the hollow portion 46, where the hollow portion 46 is located and sucks outside air into the hollow portion 46. 88 is arranged. Further, the hollow portion 46 passes through the heater support plate 42 and the heat shielding plate 92, and the terminal portion 91a of the first annular heater 41a and the terminal portion of the second annular heater 41b constituting the lower heater 41. 91b is extended. A power supply circuit (not shown) is connected to the terminal portion 91a of the first annular heater 41a and the terminal portion 91b of the second annular heater 41b, and a power cord (not shown) is supplied from the power supply unit on which the power supply circuit is mounted. Extends outside the electric pizza oven.

  Hereinafter, the internal structure of the lower unit located below the heating chamber will be specifically described with reference to FIGS.

  FIG. 6 is a first horizontal sectional view showing the configuration of the bottom side inside the lower unit. FIG. 7 is a second horizontal sectional view showing the configuration of the upper surface side inside the lower unit, that is, the heating chamber side. 6 is a cross-sectional view taken along the line BB in FIG. 8, which is a front view of the electric pizza kiln, and FIG. 7 is a cross-sectional view taken along the line CC in FIG.

  6 and 7, the operation circuit board 81 is disposed behind the operation unit 21 disposed in front of the base portion 20 of the electric pizza kiln, and switches, dials 22 and display lamps provided in the operation unit 21 are provided. 23 is a circuit board on which various electric circuit components such as 23 are mounted. The operation circuit board 81 includes an operation portion and a display portion of the dial 22 and the display lamp 23 mounted on the substrate so that the front unit side of the lower unit 40 which is the base portion 20 penetrates to the surface side of the lower unit 4020. It is arranged substantially in parallel with the front side panel at a portion immediately behind the back side of the front side panel.

  In the electric pizza kiln of the present embodiment, the control unit is arranged in the central portion and the peripheral portion of the heating plate 31 so that cooking can be performed according to a predetermined cooking program in accordance with instructions from the user given from the operation unit 21. Based on the temperature data detected by the temperature sensors 44 and 45, the amount of electric power supplied to the upper heater 61 and the lower heater 41 is controlled. As an example, the control unit receives an electrical signal from the temperature sensors 44 and 45 and converts it into temperature information, a heating power control unit for supplying a predetermined amount of power to the heaters 61 and 41, and a control operation A clock circuit unit serving as a reference, a cooking program and a memory unit capable of recording various data. The control unit can be realized, for example, as an assembly of an IC chip such as a microcomputer, or an electric circuit component such as a logic circuit or a memory element.

  The IC chip on which the microcomputer as the control unit is mounted is mounted on the control circuit board 82 together with other electric circuit components constituting the control unit, and is housed in the circuit arrangement unit 87 together with the operation circuit board 81.

  FIG. 9 is an exploded perspective view illustrating the configuration of the circuit arrangement unit.

  As shown in FIG. 9, the circuit arrangement portion 87 in the electric pizza kiln of the present embodiment is located on the inner rear side of the operation portion 21 where the operation dial 22 and the display lamp 23 are arranged, and the operation circuit board 81 and A control circuit board 82 and a heat sink 84 that assists heat dissipation of the electric circuit components mounted on the control circuit board 82 are accommodated. The circuit arrangement portion 87 is formed by combining a cover 85 that covers three side portions other than the top surface and the front surface side, and a bottom plate 86 that forms the bottom surface.

  The cover 85 constituting the three side surfaces and the upper surface of the outer shell of the circuit arrangement portion 87 can be made of a metal plate or a resin material. Although hidden in FIG. 9, a through hole through which the heat sink 84 passes is formed in the rear side portion of the cover 85. No opening such as an air hole is formed in a portion of the cover 85 other than the through hole that penetrates the heat sink.

  The front wall of the circuit arrangement portion 87 is constituted by the front plate of the base portion 20 on which the operation portion 21 is arranged. An air hole communicating with the outside is formed in the bottom plate 86 that forms the bottom surface of the outer shell of the circuit arrangement portion 87. Therefore, in the circuit arrangement portion 87 in which the operation circuit board 81, the control circuit board 82, and the heat sink 84 are housed and the outer shell is assembled, air holes are formed only on the bottom surface, and openings are formed on the other five surfaces. It becomes a substantially rectangular parallelepiped box-shaped member.

  FIG. 10 is a perspective view showing the configuration of the circuit arrangement unit and the air supply path arranged adjacent to the circuit arrangement unit. In addition, FIG. 10 has shown the state seen toward the front left upper side which is a heating chamber side from the front lower right direction of an electric pizza kiln. FIG. 10 shows a state in which the bottom plate constituting the bottom surface of the circuit arrangement portion and the front panel of the base portion constituting the front surface are removed.

  As shown in FIG. 10, a control circuit board 82 is attached to a cover 85 that covers the upper surface of the circuit arrangement portion 87. The control circuit board 82 is arranged with the surface on which the electric circuit components are mounted facing downward.

  In this way, the control circuit board 82 is mounted on the cover 85 in the upside down direction with the mounting surface of the electric circuit component facing down, so that the mounting position of the control circuit board 82 is relatively high in the circuit arrangement portion 87. That is, it can be set as the position away from the bottom of the electric pizza kiln. As a result, even if a to-be-cooked member such as flour, impurities such as dust and moisture, or even a small insect or the like enters the circuit arrangement portion 87, these foreign substances enter the circuit arrangement portion 87 undesirably. However, it becomes easy to prevent adhesion to the control circuit board 82. Further, by disposing the electric circuit component mounting surface downward, it is possible to prevent impurities that have entered the circuit arrangement portion 87 from accumulating on the electric circuit component mounting surface of the control circuit board 82. It is possible to effectively prevent an undesired short circuit or poor connection due to these impurities.

  The control circuit board 82 of the electric pizza kiln according to the present embodiment is actually supplied to the heaters 61 and 41 in accordance with a control signal from the control unit together with an electric circuit component such as a microcomputer (not shown) constituting the control unit. Four triacs 83 (83a, 83b, 83c, 83d) are mounted as switching elements for switching on / off of the electric power. A triac is a three-terminal thyristor that can control a bidirectional current, and has a higher durability than other switching elements such as a relay that is mechanically switched on and off because it is a semiconductor element. For this reason, even when an electric pizza kiln is frequently operated for a long time as a commercial heating cooker, even if the heating heater is repeatedly turned on and off many times, for example, 5 years A stable switching operation can be realized over the predetermined service life as described above.

  On the other hand, since the triac 83 is an electric circuit component that becomes a heat generation source that generates heat during operation, when it is housed in the circuit arrangement portion 87 together with other electric circuit component circuits that do not like high environmental temperatures such as a microcomputer. It is important to derive heat from the triac 83 to the outside of the circuit arrangement portion 87. For this reason, in the electric pizza kiln according to the present embodiment, the heat of the triac 83 is released to the outside of the circuit arrangement portion 87 using the heat sink 84.

  Specifically, the heat radiating plate of the triac 83 is brought into thermal contact with the plate portion 84a of the heat sink 84 via a heat conductive paste, and the heat radiating fins 84c of the heat sink 84 are arranged outside the circuit arrangement portion 87. By doing so, the heat generated during the operation of the triac 83 is not trapped in the circuit placement section 87, but in other electrical circuit components such as a microcomputer mounted on the control circuit board 82 or in the circuit placement section 87. It is possible to avoid adversely affecting the electric circuit components on the operation circuit board 81 arranged in the same manner.

  As shown in FIGS. 5, 6, and 7, in the electric pizza kiln of the present embodiment, air outside the device is sucked into the hollow portion 46 formed on the lower side of the heat shielding plate 92. A cooling fan 71 including a propeller 73 for blowing air is disposed. By arranging the cooling fan 71 and actively taking in external air, the cooling effect inside the cavity portion 46 can be improved as compared with the case of spontaneous air circulation through the air holes.

  Further, the air passage 88 through which the low-temperature air sucked from the outside passes is arranged on the foremost side of the cavity portion 46, that is, immediately behind the circuit arrangement portion 87. Even when the temperature rises, it is possible to avoid the temperature rise of the circuit arrangement portion 87.

  Furthermore, in the electric pizza kiln of the present embodiment, the cooling fan 71 is disposed on the side of the front end portion of the cavity portion 46, and the rear side from the propeller portion of the cooling fan 71 to the front center portion of the cavity portion 46. An air flow path 88 (duct) that forms a flow of cooling air toward the opening 88a formed toward the front is disposed. Therefore, the cooling air generated by the propeller 73 of the cooling fan 71 can be introduced into the front center portion of the hollow portion 46 and blown out backward, and both the left and right side walls of the hollow portion 46 can be blown out from the opening 88a. In addition, air cooling can be enhanced by forming a flow of cooling air that flows out from the air holes formed in the rear wall.

  Furthermore, in the electric pizza kiln according to the present embodiment, the radiating fin 84b portion of the heat sink 84 connected to the triac 83 is disposed in the blowing path 88 for introducing cooling air into the hollow portion 46. By doing in this way, the radiation fin 84b can be directly cooled by the low temperature outside air, and the heat radiation effect of the heat from the triac 83 can be improved.

  In the case of the electronic pizza kiln of the present embodiment, since four heaters of two upper heaters 61 and two lower heaters 41 are provided, four triacs 83a corresponding to the respective heaters are provided. 83b, 83c, 83d are mounted on the control circuit board 82. Here, four triacs 83a, 83b, 83c, and 83d are arranged on the control circuit board 82 along the path of the cooling air so that each triac 83 can contact the plate portion 84a of the heat sink. In this case, however, it is preferable to arrange the TRIAC 83 having a larger calorific value on the upstream side of the cooling air. Since the windward side in the cooling air blowing path 87 is the position closest to the cooling fan 71, the temperature rise of the introduced outside air is small. The heat sink 84 in the portion where the triac 83a having a larger calorific value is thermally connected has a higher temperature than the heat sink 84 in the portion where the triac 83d having a relatively small calorific value is thermally connected. This is because it is efficient that the part having a higher temperature is cooled by the cooling air having a lower temperature. The order in which the four triacs 83a, 83b, 83c, and 83d are arranged is not strict, and a certain effect can be obtained by intending to arrange the triac 83 that can be at a higher temperature on the windward side.

  In FIG. 10, the cooling fins 84 b in the air flow path 88 are cut out so as to be visible, but in the electric pizza kiln of the present embodiment, the surface of the radiating fins 84 b is the cooling air from the cooling fan 71. They are arranged so as to be parallel to the passing direction. However, if the cooling fins 84b are arranged slightly tilted with respect to the direction in which the cooling air passes, the effective surface area of the heat radiation fins 84b facing the cooling air can be increased, so that the cooling fins 84b are cooled by the cooling air. The effect can be further improved. In addition, by adjusting the shape and arrangement direction of the radiating fins 84b, it is possible to appropriately adjust the flow direction of the cooling air in the air blowing path 88.

  As described above, in the electric pizza kiln according to the present embodiment, the heating chamber 18 that is hot at the upper side and the electric circuit component that dislikes that the environmental temperature is high at the lower side through the heat shielding plate 92. And so on. As a result, even when the temperature of the heating chamber 18 is maintained at, for example, 300 ° C., which is suitable for baking delicious pizza, adverse effects on the electric circuit components and the like can be reduced. The upper heating chamber 18 is configured so as to obtain a high heat insulating effect by sandwiching a heat insulating material in a side wall portion surrounding the periphery thereof, and communicates with the outside on the side wall and the bottom surface as a hollow portion 46 on the lower side. In addition to providing the air holes 24 and 48, a cooling fan 71 that forcibly sucks outside air and sends it into the cavity 46 is provided. In this way, by dividing the inside of the heating cooker into a portion that should be maintained at a high temperature and a portion that should be maintained at a low temperature, and adopting a configuration in which a desired temperature state can be efficiently maintained in each case, High durability and reliability that can deliciously cook food quickly and efficiently, and can realize a predetermined operation period even if high-frequency and long-time heat cooking is performed every day. We were able to realize the cooker equipped.

  The electric pizza kiln of the present embodiment is based on the temperature data of the central part and the peripheral part of the plate body 31 detected by the two temperature sensors, while the control unit grasps the temperature distribution of the plate body 31, The amount of electric power supplied to 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 are individually adjusted, so that the plate body 31 The temperature distribution can be appropriately controlled.

  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 according to the present embodiment, a carbon plate having high heat storage properties 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, in the electric pizza kiln of the present embodiment, the heating chamber 18 is disposed in the upper portion 10 and the heat shielding plate 92 is disposed below the heater support plate 42 that constitutes the bottom surface of the heating chamber 18. A circuit arrangement portion 87 that accommodates a control circuit board 82 on which control circuit components that constitute the control circuit are mounted is disposed inside the base portion 20 below the heat shielding plate 92. For this reason, the heating chamber 18 in which a high temperature state is desired to be maintained and the circuit arrangement portion 87 in which the electric circuit component desired to avoid a high temperature body can be thermally separated by the heat shielding plate 92, so that the electric circuit component can be obtained. The inside of the heating chamber 18 can be brought into a temperature state optimum for cooking without worrying about the adverse effect of. Further, by accommodating the control circuit board 82 in the box-shaped circuit arrangement portion 87, foreign substances can be prevented from entering from the outside, and the control circuit mounted on the control circuit board 82 can be stably operated over a long period of time. realizable.

  In the above embodiment, an example in which an air cooling fan that sucks and blows external air as cooling air is provided in the hollow portion is shown. However, the hollow portion is formed by natural air circulation through an air hole or the like formed in the side wall. It is not essential to provide a cooling fan as long as the temperature rise can be suppressed.

  In addition, it is also possible to configure a ventilation path when disposing the cooling fan, and to dispose heat radiation fins of a heat sink that dissipates heat from an electric circuit component that is a heat source in the ventilation path. It is not an indispensable requirement in the vessel, but should be appropriately selected and adopted according to the degree of temperature rise of each part and the balance with the air cooling effect.

  Further, even when the electric circuit component in the circuit arrangement part is a heat generation source, if the heat generation amount is small, it may not be necessary to provide a heat sink that releases the heat generation of the electric component. Furthermore, the electrical components that serve as the heat source are not limited to the triacs exemplified above, and various other devices such as other semiconductor electrical elements such as transistors and transformers in the power conversion circuit can be considered. Whether to use a heat sink or not may be examined.

  In the above description, the side surface 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. 5), 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, 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 frame 32 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, as long as there is no problem in the strength surface and workability of the heating plate, including the case of using a metal member as the heating plate (main body), it is not necessary to configure the assembly as the heating plate.

  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 the said embodiment, the pizza kiln which bake a pizza as a to-be-cooked object was illustrated and demonstrated as a cooking device 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.

  The heating cooker according to the present disclosure divides the inside of the heating cooker vertically into a portion that should be maintained at a high temperature and a portion that should be maintained at a low temperature via a heat shielding plate. The object to be cooked can be cooked deliciously in a short time with the temperature set to a preferable temperature state for cooking without worrying about adverse effects on the electric circuit components. For this reason, it is useful as a heating cooker that performs various types of heating cooking for business use and home use, including an electric pizza kettle for business use.

18 Heating chamber 31 Plate body (heating plate)
41 Annular heater (heating means)
44 First temperature sensor (temperature sensor)
45 Second temperature sensor (temperature sensor)
61 Radiation heater (heating means)
82 Control Circuit Board 87 Circuit Arrangement 92 Heat Shielding Plate

Claims (3)

A heating chamber;
A heating plate disposed 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;
A hollow portion having a side wall portion provided with an air hole communicating with the circuit arrangement portion and the outside is formed below the heating chamber via a heat shielding plate,
A control circuit board on which electrical circuit components constituting the control unit are mounted is arranged in the circuit arrangement unit ,
A cooling fan that sucks and blows outside air into the hollow portion,
An electrical circuit component that is thermally connected to a heat sink and serves as a heat source is mounted on the control circuit board,
A heating cooker, wherein the heat dissipating fins of the heat sink are arranged in a blowing path for guiding the air from the cooling fan to the hollow portion . A plurality of electrical circuit components serving as the heat source are mounted on the control circuit board, and the electrical circuit component serving as the heat source that is at a higher temperature is disposed on the windward side of the cooling fan in the heat sink. The cooking device according to claim 1 . The cooking device according to claim 1 or 2 , wherein the control circuit board is disposed on an upper surface side of the circuit arrangement portion with an electric circuit component mounting surface facing downward.

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