JP6690145B2 - Heating cooker - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a heating cooker, and more particularly to a heating cooker for cooking food (eg, pizza) from above and below the cooking plate by placing the food on the cooking plate.

  BACKGROUND ART Conventionally, as a heating cooker for cooking food (for example, pizza, rice cake, cookies, etc.) from above and below the cooking plate by placing the food on the cooking plate, for example, one shown in FIG. 10 is known.

  The heating cooker 1 has an upper case member 2 and a lower case member 3 which are detachable, and by removing the upper case member 2 and the lower case member 3, for example, an oven toaster, an electric stove or a hot plate. And is shown as a toaster oven.

  That is, on the left side of the upper case member 2 in the drawing, there is a rectangular door 5 viewed from the front (visible from the door direction), and this door 5 has a link-type opening / closing mechanism 5a. By pulling a knob (not shown) provided on the outer side of the upper portion toward you, the lid is opened from a vertical state to a horizontal state with a hinge shaft (not shown) at the lower end as a fulcrum, and the cooking space 4 having a rectangular parallelepiped inside is opened to the outside. .

  A linear upper heater 6 is provided on the upper case member 2 in parallel with the door 5, and a large-area reflection plate 4a is provided to cover the upper and rear parts of the upper case member 2. And cook the food from above.

  A cooking plate 7 is placed on the upper part of the lower case member 3, and a lower heater 8 is provided below the cooking plate 7 so as to contact the lower surface of the cooking plate 7 (page 3, column 5). (See lines 45-48), heat the food from below.

  When cooking pizza or the like, the dough for pizza or the like is placed on the cooking plate 7 and the timer set button 9 is set. Then, the upper heater 6 and the lower heater 8 are energized, and the dough of pizza or the like placed on the cooking plate 7 is baked from both sides to be colored in brown (for example, refer to Patent Document 1 below).

  By the way, for example, pizza dough has a thin, large-diameter circular shape, and it is desired to uniformly bake the whole and give a uniform baking color.

  However, as in the above-mentioned conventional example, in the case where the lower heater is provided so as to be in contact with the cooking plate, the temperature of the cooking plate part at the contacting position and the vicinity thereof is sharply increased, and the cooking located on the upper surface of the part There is a problem in that the pizza dough portion, which is a product, is quickly baked, and it becomes difficult to uniformly bake the entire back surface and apply a uniform baking color.

  Further, in the above-mentioned conventional example, the cooking plate near the lower heater is heated, and the heat is conducted inside the cooking plate to heat the whole, especially when the cooking plate is made of non-metal. Has an adverse effect that it takes a long time from the start of heating until the cooking plate is uniformly heated and ready for cooking.

Utility model registration No. 2504489

  An object of the present invention is to solve the above problems, and to provide a heating cooker capable of uniformly heating the entire cooking plate in a short time and baking the entire cooked product uniformly. .

  In order to achieve the above object, the present invention adopts the following configurations.

In the invention according to claim 1, a main body, a cooking space in the main body, a cooking plate for cooking food, an upper heating means provided above the cooking plate, and a lower portion provided below the cooking plate. A heating cooker having a heating means, the lower heating means accommodating member being below the cooking plate , and the lower heating means being capable of heating the lower surface of the cooking plate from below. And located in the lower heating means accommodating member and not in contact with the cooking plate, the lower heating means accommodating member surrounding the outer periphery of the lower heating means and not in contact with the cooking plate. A heat shield plate in a state, the heat shield plate is a ring-shaped member smaller than the cooking plate, all of which are located inside the heating means accommodating member, and all of them are The air located in the lower side of the cooking plate and heated in the heating means housing member heated by the lower heating means rises and hits the bottom surface of the cooking plate, and then in all directions of the bottom surface. A structure that flows along the outside of the heat shield plate.

In the invention according to claim 2 , the lower heating means is a plurality of heaters located on the inner and outer circumferences, and is independently controlled.

In the invention according to claim 3 , the lower heating means has a terminal portion, and the terminal portion is located on the back side of the cooking space.

  According to the present invention, by arranging the lower heating means in the closed space in a non-contact state with the cooking plate, the entire radiant heat from the lower heating means and the heat of the closed space heated by the lower heating means are used for the entire cooking plate. Can be indirectly heated evenly from below, and the back surface of the food can be evenly baked and given a uniform brown color.

  The entire cooking plate can be heated in a short time by the heat from the upper heating means, the heat generated in the closed space, and the heat from the lower heating means, and as a result, the cooking time can be shortened. It should be noted that the term "uniform" does not mean a strict sense, but includes substantially uniform or substantially uniform. Further, by making the cooking plate non-metallic, the maintenance power after heating can be reduced.

  Further, by providing a heat shield plate surrounding the outer periphery of the lower heating means in the closed space in a non-contact state with the cooking plate, the substantial closed space can be made into a small shield slope. Therefore, the air in the shielding slope is heated immediately, and the heated air rises, hits the cooking plate lower surface on the shielding plate, and then flows outward along the cooking plate lower surface. As a result, the cooking plate can be heated uniformly in a shorter time.

  Also, since the temperature of the cooking plate becomes higher toward the central part, the lower heating means is composed of a plurality of heaters located on the inner and outer circumferences that can be controlled independently, and for example, from the start of heating to the uniform heating of the cooking plate. The outer heater is used, and after the cooking plate is uniformly heated, the inner heater is independently controlled so that cooking can be performed with less electric power, and as a result, energy can be saved.

  In addition, since the cooking space has a higher temperature on the far side opposite to the door and the temperature is less likely to rise in the vicinity of the terminal portion of the heating means, the terminal portion of the lower heating means is located on the far side of the cooking space to allow cooking. The heating temperature of the plate can be made more uniform.

Development view of the heating cooker as seen from diagonally above FIG. 1 is a development view of the lower heater unit and the members therebelow, which are further expanded and seen from diagonally above. Fig. 1 is a development view of the upper heater unit further expanded and seen from diagonally above. Expanded development view of the lower heater unit mainly from an obliquely upper position Vertical cross-section through the center line in the front-back direction Sectional view taken along the line AA of FIG. A view of the heating cooker with the door removed, viewed diagonally from above Top view with outer case, inner case, upper heater unit and cooking plate unit removed A view of the heating cooker with the door removed, viewed diagonally from above Cross-sectional view of conventional heating cooker

  1 to 4 are various development views of the heating cooker, FIGS. 5 and 6 are cross-sectional views of the heating cooker, and FIGS. 7 to 9 are views of a part of the heating cooker as viewed obliquely or from above. Is.

  The heating cooker may be any cookable one, such as pizza, rice cakes, cookies, etc., but in the following description, a pizza maker will be used to confirm the view from the door side. Is viewed from the front, the view from the opposite side to the door is viewed from the rear, the view from above is referred to as the plan view, the view from the direction orthogonal to the door is referred to as side view, the door side is the front side, and the opposite side to the door is the rear side. The side orthogonal to the front-back direction is called the left-right direction.

  The pizza maker 20 mainly includes an outer case 21, an inner case 30, an upper heater unit 40, a cooking plate unit 50, a lower heater unit 55, a support member unit 65, a control member unit 70, a door 75, and a bottom member 80. It is for business use, but can also be used for home use.

  The outer case 21 is a metal-made flat plate member that covers the upper and left and right sides of the pizza baking device 20 in a front view and a rear view, for example, iron-based galvanization, and a rectangular flat plate is tunnel-shaped. It is formed by being bent to form an outer shell which is the main body of the pizza baking device 20.

  Further, there are a plurality of openings 22 below and on the left and right side surfaces of the region where the control member unit 70 is housed and arranged. The control member unit 70 and the like are cooled by taking in outside air and discharging heated air from the other opening 22.

  Further, a circular opening 23 (see FIGS. 3 and 4) is provided at the center of the top of the outer case 21, and the steam cylinder 24 is inserted into the circular opening 23. The steam cylinder 24 is a member made of a metal having a substantially mushroom-shaped vertical section in which a circular top portion 24a and an annular portion 24b (see FIGS. 3 and 4) having a smaller diameter and a lower height than the circular top portion 24a are coaxially integrally formed. There are a plurality of steam holes 25 (see FIGS. 5 and 6) radially outward between the lower end of the circular top portion 24a and the upper end of the annular portion 24b, and excess steam generated in the cooking space 31 is generated. Is discharged to the outside.

  Then, the steam cylinder 24 is fitted into the ring-shaped member 43 attached to the top of the projecting space forming member 42 after being inserted into the circular opening 23.

  The steam holes 25 are vertically offset from the ventilation holes 44c provided in the upper reflector 44 and communicating with the cooking space 31, so that the steam in the cooking space 31 is easily discharged, but the cooking space 31 The heat of is hard to escape to the outside.

  The left and right lower ends of the outer case 21 have mounting portions 26 that are bent at a right angle toward the inside of a predetermined length, and further, the mounting portions 26 have a plurality of screw holes 26a. 26 is screwed to the lower surface of the support member unit 65.

  Further, the rear end portion of the outer case 21 is closed by the back member 27 (see FIG. 5). The back member 27 is a flat plate member made of the same metal as the outer case 21, and has a tunnel shape in the front view and the back view, which is the same as the outer case 21, and has a plurality of screw holes 26a similar to the outer case 21 at the lower end portion. It has a mounting portion 26 having. The outer peripheral portion of the back member 27 is screwed to the rear end of the outer case 21 with a screw 27a (see FIG. 5), and the mounting portion 26 at the lower end thereof is screwed to the lower surface of the support member unit 65.

  The inner case 30 is a stainless steel member having an arch shape in a front view. The arch shape is such that the left and right side surfaces are arcuate with the same radius of curvature, and the central part is linear or arcuately protruding slightly upward. Has a function of efficiently reflecting the heat in the direction of the cooking plate 51, has a flange portion 32, a rectangular opening 33, and an outwardly projecting portion 35, and has a kamaboko-shaped cooking space 31 formed inside.

  The left and right side surface portions may have an arcuate shape on the upper side and a vertical shape on the lower side, and the central portion may have an arc shape with the same radius of curvature as the arcuate shape of the left and right side surface portions. However, as described above, the cooking space 31 can be made smaller and the thermal efficiency can be improved when the central portion is linear or has an arc shape protruding slightly upward. That is, it is preferable because the cooked product can be baked uniformly and a uniform baking color can be provided.

  The flange portion 32 is a vertical flat portion formed at the front end portion of the inner case 30, and the outer periphery thereof has the same arch shape as the outer peripheral shape of the door 75, and also the inner peripheral portion serving as an inlet / outlet of the food. It is arched. A magnet member 32a for maintaining the door 75 in a closed state is provided in the upper center portion of the flange portion 32.

  The rectangular opening 33 is a rectangular hole in a plan view, which is formed above the inner case 30 from the front to the rear and has a length in the front-rear direction longer than a length in the left-right direction. The attachment piece 34 is provided upright, and the upper heater unit 40 is attached to the attachment piece 34.

  The outward projecting portion 35 is a rectangular portion elongated in the front-rear direction in a plan view, which is bent outward at right angles from the left and right lower end portions of the inner case 30, and has a plurality of screw holes 35a.

  A rear lid 36 (see FIG. 5) is attached to the rear of the inner case 30. The rear lid 36 is a stainless steel member that serves as a rear wall portion inside the cooking space 31, and has an outer projecting portion 35 having screw holes 35a similar to the inner case 30 at the lower end portion thereof, which is not shown. The inner case 30 is screwed to the outer periphery of the rear wall with screws.

  Then, the inner case 30 to which the rear lid 36 is fixed is screwed to the support member unit 65 so as to sandwich the cooking plate unit 50, the lower heater unit 55, and the intermediate tray 63.

  As shown in FIG. 3, the upper heater unit 40 includes a mica plate 41, a protruding space forming member 42, a ring-shaped member 43, an upper reflecting plate 44, a lower reflecting plate 45, an upper heater 46 and a heater mounting member 47 from above. Have.

  The mica plate 41 is a flat plate-like heat insulating member, and a circular opening 41a having a diameter slightly larger than the outer diameter of the ring-shaped member 43 at which the ring-shaped member 43 can project upward (see FIG. 3). ) And is screwed to the upper surface of the projecting space forming member 42 to reduce upward heat escape.

  The projecting space forming member 42 is a metal member formed by bending the left and right ends of a rectangular flat plate-shaped member having a length in the front-rear direction longer than the length in the left-right direction in an arc shape downward, and is substantially in front view inside. A protruding space 42d (see FIGS. 3 and 6) that extends from the door 75 toward the back is formed in a shape. Further, a plurality of screw screws 42a, an insertion hole 42b for the support piece 43a of the ring-shaped member 43, and a steam port 42c (see FIGS. 1 and 4) are provided on the top thereof.

  The ring-shaped member 43 is a ring-shaped metal member having a low height, and has a plurality of supporting pieces 43a (see FIG. 3) extending downward at the lower end thereof, and the supporting piece 43a is formed into a protruding space forming member. It is attached to the protruding space forming member 42 by inserting it into the insertion hole 42b of 42 and bending the inserted lower end.

  The upper reflection plate 44 is a metal member having a heat insulating and reflecting function, which is formed by bending a flat plate member into a substantially M-shaped cross section, and corresponds to a heat shield plate surrounding the upper side and the side of the upper heater 46. The top has a plurality of screw holes 44a.

  The M-shaped cross section of the upper reflector 44 has a horizontal portion 44b at the central portion which is located below as shown in FIG. 6, and the horizontal portion 44b is a substantially straight line which is the upper surface of the cooking space 31. It is located so as to be flush with the slightly arcuate portion.

  By forming the upper reflection plate 44 into the above-described configuration, it is possible to reduce the volume of the protruding space 42d which is a part of the cooking space 31 but is unnecessary as the cooking space 31, in other words, substantially. Since it is possible to suppress an increase in the cooking space 31, it is possible to suppress a decrease in thermal efficiency in the cooking space 31.

  Further, there are ventilation holes 44c at positions forward and rearward of the horizontal portion 44b and vertically offset from the steam port 42c of the projecting space forming member 42 in the front-back direction. The generated steam escapes to the outside.

  As described above, the vent hole 44c is vertically displaced from the steam port 42c and the steam hole 25 of the steam cylinder 24 in the front-rear direction, and the steam is easily discharged (see the black arrow in FIG. 6), but the cooking The heat of the space 31 is hard to escape.

  The lower reflection plate 45 is a metal member made of the same material as the upper reflection plate 44 having a V-shaped cross section, and, like the upper reflection plate 44, is a heat shield plate that surrounds the upper heater 46 and the sides thereof. The lower reflection plate 45 is made up of two pieces and is arranged so as to enter the left and right upwardly projecting portions of the upper reflection plate 44, respectively, and further, each top has a plurality of screw holes 45a. The lower reflection plate 45 can be omitted, but the presence of the lower reflection plate 45 can further reduce the escape of heat upward.

  The upper heater 46 is a straight tubular radiant heater corresponding to the upper heating means, for example, a carbon heater, a halogen heater, a quartz heater, a Kortier heater, etc., and is composed of two pieces so as to be inserted into each of the lower reflection plates 45. Are arranged in various forms (see FIG. 6).

  The heater mounting member 47 (see FIG. 3) is an insulative member having a substantially trapezoidal shape in a front view, and has insertion holes 47a at its left and right ends and mounting protrusions 47b bent at a right angle, and the respective insertion holes 47a. The end portion of the upper heater 46 is inserted into the upper end of the upper heater 46, and then the upper heater 46 is fastened by the fastening member 48 to form an H-shaped upper heater assembly including two heater mounting members 47 and two upper heaters 46. It

  The upper heater unit 40 is assembled as follows. That is, first, the H-shaped upper heater assembly is assembled, the mica plate 41 is attached to the upper surface of the protruding space forming member 42, and the ring-shaped member 43 is attached to the upper portion of the protruding space forming member 42.

  Next, as shown in FIG. 3, the mica plate 41, the protruding space forming member 42, the ring-shaped member 43, the upper reflecting plate 44, and the lower reflecting plate 45 are placed in this order from above, and a plurality of screw screws 42a and screw holes 42 44a and 45a are aligned with each other, screws are inserted into the plurality of screw holes 44a and 45a from below, and the screws are screwed into the screw screws 42a of the protrusion space forming member 42 to form the protrusion space forming member 42 and the upper reflection plate 44. , The lower reflector 45 is screwed together.

  After that, the screw holes in the lower side surface of the protruding space forming member 42 and the mounting projections 47b of the heater mounting member 47 are screwed. As a result, the upper heater unit 40 in which the two upper heaters 46 are inserted into the two lower reflectors 45 is completed.

  After that, when the upper heater unit 40 is attached to the attachment piece 34 on the upper part of the inner case 30, it becomes as shown in FIGS. 2 and 4. Note that the number of upper heaters other than two, for example, one or more than two may be used.

  The cooking plate unit 50 includes a cooking plate 51 and a metal cooking plate frame 52 that sandwiches the cooking plate 51 from above and below.

  The cooking plate 51 is made of non-metal having a high heat storage property, for example, a flat plate made of carbon black having a high heat storage property, and cooks food such as pizza on the plate. It should be noted that it may be made of ceramic having a high heat storage property or may be made of metal.

  The cooking plate frame 52 is composed of two upper and lower frames having the same shape, and the cooking plate unit 50 is formed by sandwiching the outer periphery of the cooking plate 51 from above and below, for example, by force fitting.

  The lower heater unit 55 (see FIG. 1) includes a lower heater 56, a lower heater support member 57, a heat shield plate 58, and a lower heater tray 59.

The lower heater 56, spiral electrothermal heater which corresponds to the lower heating means, e.g., parakeets Roy heater in sheet Zuhita like, a plurality, for example, inner lower heaters 56a and outer lower heater 56b (see FIG. 4,8) And they are arranged on the inner and outer circumferences, i.e. coaxially inside and outside.

  The lower heater support member 57 includes a plurality of, for example, three inner and outer circumferences, a U-shaped groove on which the lower heater 56 is placed, and a vertically elongated metal member having a mounting portion bent at a right angle downward. The lower heater 56 is attached by screwing the lower mounting portion to the upper surface of the lower heater tray 59 and placing the lower heater 56 in the upper U-shaped groove by slightly pushing it from above.

  At that time, the terminal portion 56aa of the inner lower heater 56a and the terminal portion 56bb of the outer lower heater 56b are arranged on the inner side, that is, on the opposite side of the door 75 as shown in FIGS. Each of the terminal portions 56aa and 56bb is bent downward at a right angle, extends toward the lower control member unit 70, and is electrically connected to an internal control board or the like. The inner lower heater 56a and the outer lower heater 56b. Are controlled separately.

  The reason for arranging each terminal portion 56aa and the terminal portion 56bb on the back side is that the temperature tends to be high on the back side of the cooking space 31, while the temperature in the vicinity of each terminal portion 56aa and the terminal portion 56bb is different. This is because the temperature tends to be lower than that of, and by arranging in this way, the temperature in the cooking space 31 can be made uniform.

  The heat shield plate 58 is a ring-shaped metal member having a low height and a high heat shield function, and has a diameter larger than that of the lower heater 56 and smaller than that of the cooking plate 51. It is located in a slightly larger vicinity, and its upper end is arranged with a small gap, for example, 2 mm, between it and the lower end of the cooking plate 51.

  Further, the heat shield plate 58 has a plurality of supporting pieces 58a (see FIG. 4) extending downward at the lower end portion, and the supporting piece 58a is inserted into the insertion hole 59a of the lower heater tray 59, and the inserted lower end is By being bent, it is fixed to the lower heater tray 59.

  The reason for providing the heat shield plate 58 is to form a closed space in the lower heater tray 59 by the cooking plate unit 50 as described later, but to reduce the closed space to shorten the heating time. This is because by providing the heat shield plate 58, the closed space around the lower heater 56 can be made smaller and the heating time of the air in the closed space can be shortened.

  That is, when the heat shield plate 58 is provided, the closed space around the lower heater 56 becomes smaller. As a result, the air in the heat shield plate 58 is heated in a short time, the heated heat rises and hits the bottom surface of the cooking plate 51, and then passes through the gap of 2 mm to substantially follow the bottom surface of the cooking plate 51. It flows horizontally outward and heats the entire cooking plate 51 uniformly in a short time. As a result, the cooking plate 51 is indirectly and uniformly heated in a short time.

  The lower heater tray 59 is a dish-shaped metal member that is slightly larger than the cooking plate unit 50 and has a rectangular shape in a plan view, and has a shallow stepped portion 59b near the outer periphery on the left and right sides except the front side and the rear side. In addition, a concave fitting portion 59c having a deep depth is provided inside the step portion 59b.

  The cooking plate unit 50 is placed on the stepped portion 59b, and the lower heater support member 57 and the heat shield plate 58 are attached to the bottom surface of the recessed fitting portion 59c. When the cooking plate unit 50 is placed on the step portion 59b, the lower heater 56 is brought into a non-contact state with the cooking plate 51, and the recessed fitting portion 59c becomes a closed space which is closed when the lower heater 56 is heated. The air in the space is heated, and the heated air heats the entire lower surface of the cooking plate 51, and the cooking plate 51 is heated uniformly in a short time in addition to the above-described function of the heat shield plate 58. It

  The first temperature sensor 60 is attached to the center of the inner lower heater 56a on the upper surface of the concave fitting portion 59c, and the second temperature sensor 61 is attached to the corner of the concave fitting portion 59c. The central temperature of the fitting portion 59c is detected by the first temperature sensor 60, and the temperature of the outer peripheral portion of the concave fitting portion 59c is detected by the second temperature sensor 61. Based on these detection signals, the inside lower heater 56a and the outside It is controlled separately from the lower heater 56b.

  The pizza maker 20 of the present application is controlled at a constant output of, for example, 100 V and a maximum of 1350 W. When the upper heater 46 and the lower heater 56 are used at the same constant and low output at the same time, the inner lower heater 56 a and the outer heater 56 a are used. High-power cooking using the lower heater 56b becomes difficult. Therefore, by providing the first temperature sensor 60 and the second temperature sensor 61 and separately controlling the inner lower heater 56a and the outer lower heater 56b, the above-mentioned adverse effect is solved.

  That is, before cooking, for example, only the outer lower heater 56b is energized with an output of 250W to heat the cooking plate 51 with an output of 250W, and when cooking, the inner lower heater 56a is switched to cook with an output of 250W, for example. The switching is performed by utilizing the temperature difference between the central portion and the outer peripheral portion which occurs when the food is placed on the cooking plate 51.

  Specifically, when a food item is placed, the temperature of the central portion of the cooking plate 51 decreases and a temperature difference occurs between the cooking plate 51 and the outer peripheral portion, and the temperature difference is measured by the first temperature sensor 60 and the second temperature sensor 61. And the difference is equal to or more than a predetermined value, the switching is performed. With such a configuration, it is possible to perform heating by using the upper heater 46 and the lower heater 56 at the same time even if the output is low.

  By the way, between the lower heater unit 55 and the support member unit 65, there is an intermediate tray 63 and a lower tray 64 for forming the second closed space and the third closed space (see FIG. 2).

  The intermediate tray 63 is a plate-shaped metal member that is slightly larger than the lower heater tray 59 and has a rectangular shape in a plan view. The intermediate tray 63 has a shallow step portion 63b near the outer periphery, and further has an inner step portion 63b inside. The concave fitting portion 63c having a deep depth is provided, and a plurality of screw holes 63a penetrating in the vertical direction are provided on the upper surfaces on the left and right sides and the rear side.

  The intermediate tray 63 is placed on the support member unit 65, and the lower heater tray 59 is placed on the stepped portion 63b so that the recessed fitting portion 63c is placed in the second closed space. become.

  The lower tray 64 is a dish-shaped metal member that is slightly larger than the intermediate tray 63 and has a rectangular shape in a plan view. The lower tray 64 has a recessed portion 64c with a deep depth inside and is provided above the support member unit 65 inside. The recessed fitting portion 64c becomes a third closed space when it is placed in a form of entering.

  The support member unit 65 is a metal member in which a plurality of frame bodies are combined in a rectangular parallelepiped shape, and front, rear, left and right, and upper and lower six surfaces are open, and a plurality of screw screws 65a are provided in an upper frame portion thereof. On the upper side, the inner case 30, the upper heater unit 40, the cooking plate unit 50, the lower heater unit 55, the intermediate tray 63 and the lower tray 64 are placed.

  Their attachment is as follows. That is, the lower tray 64 is inserted above the support member unit 65, and the upper surface of the lower tray 64 is placed on the upper surface of the support member unit 65. Then, the intermediate tray 63 is placed on the upper surface of the support member unit 65.

  After that, the lower heater tray 59, which is a part of the lower heater unit 55, is placed in the stepped portion 63b of the intermediate tray 63, and then the cooking plate unit 50 is placed on the stepped portion 59b of the lower heater tray 59. The inner case 30 incorporating the upper heater unit 40 is placed on the outer periphery of the cooking plate unit 50.

  After that, screws are inserted from above into a plurality of screw holes 35a provided in the outer overhanging portion 35 of the inner case 30, and the screws are further inserted into the screw holes 63a of the intermediate tray 63, and the screw screws of the supporting member unit 65 are inserted. Each member is integrally fixed by screwing to 65a. That is, the cooking plate unit 50, the lower heater unit 55, and the lower tray 64 are clamped and fixed, and their attachment is simple and easy.

  The control member unit 70 has a substantially rectangular parallelepiped main body case 71 (see FIG. 5) having a width in the left-right direction and a depth in the front-rear direction that is longer than its height, and has an outer shell. It has a container, a control board, an energizing circuit, etc., is inserted from the front into the supporting member unit 65, and is screwed to the frame of the supporting member unit 65.

  The front end portion 71a of the main body case 71 is made larger than the other portions, and when the main body case 71 is inserted into the support member unit 65, the front end portion 71a contacts the outer surface of the front side of the support member unit 65.

  A timer switch and various knobs 72 for temperature adjustment are provided on the front surface of the front end portion 71a, and mounting portions 73 for mounting doors are provided on the left and right ends of the upper surface of the front end portion 71a.

  In addition, a cooling fan 74 is mounted inside the support member unit 65 on the inner side of the main body case 71. The cooling fan 74 takes in air from the opening 22 on one side of the lower end of the outer case 21, cools the control member unit 70, the lower tray 64, etc., and externalizes the air from the opening 22 on the other side of the lower end of the outer case 21. To discharge.

  The door 75 is a metal member having an arch shape in a front view, and a window 76 having a size substantially the same as the outer shape of the door 75 and a small size is provided in a central portion thereof. The window 76 is a transparent member having a heat insulating property, such as heat resistant glass, and the inside of the cooking space 31 can be visually recognized from the outside.

  Further, a handle 77 having a U-shape in a plan view is provided on an upper portion of a front surface of the door 75, and a hinge portion 78 is provided on a bottom surface of the door 75. By attaching to the portion 73, the door 75 is attached rotatably above the attaching portion 73. The hinge portion 78 has a spring that acts on the door 75 in the upright state, that is, in the closed state, and is normally in the upright state of FIG. 3, and when the lid is opened, the handle 77 is pulled forward. As shown in FIG. 4, the cooking space 31 is opened by rotating horizontally.

  The bottom member 80 is a metal member that is rectangular in plan view and covers the lower surface of the support member unit 65. The bottom member 80 has a plurality of screw holes on its outer peripheral portion, and four legs 81 are attached to the lower surface. . Then, the bottom member 80 is attached as follows.

  That is, first, the inner case 30, the upper heater unit 40, the cooking plate unit 50, the lower heater unit 55, the intermediate tray 63 and the lower tray 64 are mounted on the support member unit 65 in this order from the top, and then the outer case 21 is covered. The mounting portion 26 at the lower end portion of the outer case 21 is inserted into the lower end bottom portion of the support member unit 65, and then the bottom member 80 having the legs 81 attached thereto is brought into contact with the bottom portion of the support member unit 65, and a screw (not shown) of the bottom member 80 is attached. A screw is inserted into the hole and the screw hole 26a of the mounting portion 26 of the outer case 21, and the screw is attached by screwing it into a screw screw (not shown) provided in the support member unit 65.

  A cross-sectional view assembled as described above is shown in FIG. As shown in the drawing, the upper heater 46 extends linearly from the door 75 toward the rear side, and the protruding space 42d is formed above the cooking space 31 by the protruding space forming member 42. The volume of 42d is made smaller by the upper reflection plate 44, and as a result, an increase in the volume of the cooking space 31 is suppressed.

  Further, a closed space 49 having a heat insulating property is formed between the projecting space forming member 42 and the upper reflection plate 44, and the closed space 49 and the mica plate 41 prevent heat from escaping upward.

  An upper reflector 44 and a lower reflector 45 are vertically stacked in the protruding space forming member 42, and an upper heater 46 is inserted in the lower reflector 45. The light is reflected by the reflection plate 45 and goes toward the lower cooking product.

  Further, the heat from the upper heater 46 is prevented from directly impinging on the upper reflecting plate 44 by being obstructed by the lower end portion of the lower reflecting plate 45 as shown by the white arrow in FIG. The temperature rise in the space 49 is suppressed.

  That is, the laminated structure of the upper heater 46, the upper reflection plate 44, and the lower reflection plate 45 is a structure in which the heat from the upper heater 46 does not directly hit the upper reflection plate 44, and the closed space 49 and the mica plate 41 are laminated. Combined with the structure, the heat escape to the upper part is reduced as much as possible.

  Further, since the cooking space 31 has an arch shape, the heat directed from the upper heater 46 toward the side is reflected by the curved portion of the side toward the food. That is, the arched shape of the cooking space 31 smoothes the convection of the heated air inside and shortens the time from the start of heating to the start of cooking.

  In addition, since the upper heater 46 is arranged in the lower reflection plate 45, it does not hinder the entry and exit of food, and further, the heat from the upper heater 46 can be directed to the lower side and the left and right side wall portions. The cooking space where cooking is possible can be widely used, and most of the radiant heat can be efficiently applied to the food.

  Further, below the cooking plate 51, a closed space having a three-layer structure is formed by a lower heater tray 59, an intermediate tray 63, and a lower tray 64 to prevent heat from escaping downward. Note that, for example, a two-layer structure without the lower tray 64 may be used.

  Further, by arranging the lower heater 56 in the closed space inside the lower heater tray 59 in a non-contact state with the cooking plate 51, direct radiation heat from the lower heater 56 and heat of the closed space heated by the lower heater 56 can be obtained. As a result, the entire cooking plate 51 is indirectly heated uniformly from below, so that the back surface of the food can be evenly baked and evenly colored.

  In addition, the cooking plate 51 includes an independently controllable inner lower heater 56a and outer lower heater 56b, which enables cooking with less electric power.

  Further, by arranging the terminals of the inner lower heater 56a and the outer lower heater 56b at the inner side of the cooking space, the heating temperature of the cooking plate 51 becomes more uniform.

  Further, since the closed space around the lower heater 56 can be made smaller by the heat shield plate 58, the cooking plate can be heated uniformly in a shorter time.

  The invention of the present application is not limited to the configuration of the above-described embodiment, and can be appropriately modified in design without departing from the gist of the invention.

20 Pizza Grill 21 Outer Case 22 Opening 23 Circular Opening 24 Steam Cylinder 25 Steam Hole 26 Mounting Part 27 Rear Member 30 Inner Case 31 Cooking Space 32 Flange Part 32a Magnet Member 33 Rectangular Opening 34 Mounting Piece 35 Outer Cone Outer portion 36 Rear lid 40 Upper heater unit 41 Mica plate 41a Circular opening 42 Projection space forming member 42c Steam port 42d Projection space 43 Ring member 44 Upper reflector 44b Horizontal portion 44c Vent hole 45 Lower reflector 46 Upper heater 47 Heater Mounting member 47a Insertion hole 47b Mounting protrusion 48 Fastening member 49 Closed space 50 Cooking plate unit 51 Cooking plate 52 Cooking plate frame 55 Lower heater unit 56 Lower heater 56a Inner lower heater 56b Outer lower heater 56aa, 56bb Terminal part 57 Lower heater support Member 58 Heat shield plate 59 Lower heater saucer 60 First temperature sensor 61 Second temperature sensor 63 Middle saucer 64 Lower saucer 65 Support member unit 70 Control member unit 71 Main body case 71a Front end 72 Grip 73 Mounting portion 74 Cooling fan 75 Door 76 Window 77 Handle 78 Hinge part 80 Bottom member 81 Leg

Claims (3)

Heating cooking having a main body, a cooking space in the main body, a cooking plate for cooking food, an upper heating means provided above the cooking plate, and a lower heating means provided below the cooking plate A vessel,
Below the cooking plate, there is a lower heating means accommodating member,
The lower heating means is an electric heater capable of heating the lower surface of the cooking plate from below , is located in the lower heating means accommodating member, and is not in contact with the cooking plate,
The lower heating means accommodating member has therein a heat shield plate which surrounds the outer periphery of the lower heating means and is in a non-contact state with the cooking plate,
The heat shield plate is a ring-shaped member smaller than the cooking plate, all of which are located inside the heating means accommodating member, and all of which are located below the cooking plate,
At the time of heating and cooking , the air in the heating means accommodating member heated by the lower heating means rises and hits the bottom surface of the cooking plate, and then outward of the heat shield plate along all directions of the bottom surface. A cooker characterized by flowing into.   The cooking device according to claim 1, wherein the lower heating means is a plurality of heaters located on the inner and outer circumferences and is controlled independently. The said lower heating means has a terminal part, The said terminal part is located in the back side of the said cooking space, The heating cooker of Claim 1 or 2 characterized by the above-mentioned.

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