JP2023132378A - heating cooker - Google Patents

Abstract

To provide a heating cooker which can inhibit lifting of a corner part of a top plate part and secure the appearance quality of the heating cooker.SOLUTION: A heating cooker 1 includes a top plate part 2 which covers the upper side of an opening of an upper surface of a device body 11, extends in an anteroposterior direction and a lateral direction, and has a substantially rectangle shape. The top plate part 2 includes: a top plate body 20 extending in the anteroposterior direction and the lateral direction and having a substantially rectangle shape; and a back plate 5 which is bonded to a rear surface of the top plate body 20 by an adhesive member 63, extends in the anteroposterior direction and the lateral direction, and has a substantially rectangle shape. The back plate 5 has: a back plate upper surface part 6 which is bonded to the top plate body 20 through the adhesive member 63; and a back plate frame body part 7 which is provided around a peripheral edge end of the back plate upper surface part 6. A through hole 3 penetrating through the back plate upper surface part 6 vertically is formed at a portion of the back plate upper surface part 6 located near at least one corner part 51 of the back plate 5.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a cooking device that includes a top plate portion that covers above an opening on the top surface of a device main body.

Conventionally, in a heating cooker, a rectangular top plate portion that covers above an opening on the top surface of the appliance body includes a top plate body and a back plate, and the back plate includes a peripheral frame body and an inner part of the peripheral frame body. Some devices have an elongated plate attached to the peripheral end, and have a configuration in which the back plate is bonded to the back surface of the top plate body with an adhesive (for example, Patent Document 1, etc.).

Japanese Patent Application Publication No. 2006-10281

By the way, when a back plate is constructed by integrating the peripheral frame and the elongated plate for the purpose of simplifying the structure of the top plate portion, reducing costs, etc., the rigidity of the back plate increases due to the integrated structure. When cooking with a heating cooker, when the cooking container placed on the top plate is heated by the heating section provided on the top plate, the top plate becomes high temperature and the back plate becomes distorted due to thermal expansion. If this occurs, the high rigidity of the back plate tends to push the top plate upward and maintain its warped shape, making it particularly likely that the corners of the top plate will lift up. The lifting of the corner portion of the top plate causes a problem in that the appearance of the heating cooker is impaired.

The present invention has been made in view of the above circumstances, and provides a heating cooker that can suppress lifting of the corners of the top plate and ensure the appearance quality of the cooker. The purpose is to

The heating cooker according to the present invention includes:
It has a generally rectangular top plate portion that covers the upper part of the opening on the top surface of the device body and extends in the front-rear direction and the left-right direction,
The top plate portion includes a generally rectangular top plate body extending in the front-rear direction and the left-right direction, and a top plate body that is bonded to the back surface of the top plate body with an adhesive member, and extends in the front-rear direction and the left-right direction. It has an extended substantially rectangular back plate,
The back plate has a back plate upper surface portion that is bonded to the top plate main body via the adhesive member, and a back plate frame body provided around a peripheral edge of the back plate upper surface portion,
The upper surface of the back plate near at least one corner of the back plate is provided with a through hole that vertically penetrates the upper surface of the back plate.

According to the above configuration, the back plate frame portion is provided around the peripheral end portion of the back plate upper surface portion, and the back plate upper surface portion and the back plate frame portion are integrated, thereby increasing the rigidity of the back plate. In the back plate with increased rigidity, the vertical strength of the corner portion of the back plate can be reduced by providing through holes near the corners of the back plate. Therefore, even if distortion occurs due to thermal expansion of the back plate during cooking, the corner portions of the back plate are prevented from being warped and deformed so as to push up the top plate main body. Therefore, it is possible to suppress the phenomenon in which the corner portion of the top plate part lifts up during cooking, and the appearance quality of the cooking device can be ensured. Moreover, by forming the back plate of the top plate part into a structure in which the back plate upper surface part and the back plate frame part are integrated, it is possible to simplify the structure of the top plate part and reduce costs.

In the heating cooker,
The through hole has a front-rear penetration part arranged in parallel on the front-rear peripheral edge of the back plate, and a left-right penetration part arranged in parallel on the left-right peripheral edge of the back plate,
The longitudinal direction penetrating portion and the left-right direction penetrating portion may be continuous in the vicinity of the corner portion.

According to the above configuration, the through holes are formed continuously along the corner portions of the back plate, so that the strength can be reduced only in the necessary portions near the corner portions of the back plate. Therefore, even if the back plate is distorted due to thermal expansion during cooking, the through holes will prevent the back plate from warping upward and deforming at each peripheral edge in the front-rear direction and left-right direction at the corners of the back plate. can be reliably suppressed. Therefore, it is possible to reliably suppress the phenomenon that the corner portions of the top plate part lift up during cooking, and it is possible to further ensure the appearance quality of the cooking device.

In the heating cooker,
The upper surface part of the back plate has a peripheral edge adhesive part that is adhered to the peripheral edge part of the top plate main body via the adhesive member,
The through hole may be provided on the inner side of the peripheral adhesive portion.

The back plate reduces the strength in the vertical direction at the corner portion of the outer side of the through hole, so by bonding the back plate on the outer side of the through hole to the top plate main body, the corner portion of the back plate is reduced. It is possible to more reliably prevent the material from warping upward and deforming. Therefore, it is possible to reliably suppress the lifting-up phenomenon of the corner portion of the top plate portion during cooking, and it is possible to further ensure the appearance quality of the cooking device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole structure of the cooking device based on embodiment. It is an exploded perspective view of a top plate part. It is a perspective view showing the back side of a top plate part. FIG. 2 is an enlarged view showing the vicinity of the corner of the back plate; FIG. FIG. It is a schematic diagram which shows the modification of the shape of a through-hole.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The heating cooker 1 of the embodiment shown in FIG. 1 is an example of the heating cooker of the present invention, and is a gas combustion type built-in stove installed so as to be dropped into an opening provided in a countertop 10 of a system kitchen. . The heating cooker 1 of the present embodiment is a gas stove that uses a gas burner as a heating part, but the present invention is not limited to gas stoves, but also includes an induction heating cooker that uses an electromagnetic induction coil as a heating part, and an electric heater as a heating part. It can be applied to any heating cooker such as a heating cooker. The heating cooker 1 includes an appliance body 11 and a top plate portion 2 that covers above an opening on the upper surface of the appliance body 11. In this specification, the front surface of the appliance body 11 is the front of the cooking device 1, and the depth direction of the appliance body 11 when the cooking device 1 is viewed from the front side is the front-back direction, and the width direction perpendicular to the front-back direction. is called the left-right direction, and the height direction perpendicular to the front-back direction is called the vertical direction.

The top plate portion 2 has a substantially rectangular shape extending in the front-rear direction and the left-right direction. Note that in this specification, a substantially rectangular shape includes not only a rectangular shape itself but also a shape with rounded corners and sides. The shape of the top plate part 2 includes not only a shape in which the four corners (corners where two sides intersect) and sides are straight, but also a shape in which the sides are rounded. On the upper surface of the top plate part 2, three (plural) stove burners 12L, 12R, and 12B serving as heating parts are arranged. A trivet 13 that supports a cooking container (not shown) such as a pot or a frying pan is placed at the location of each stove burner 12L, 12R, and 12B. A temperature sensor 14 is mounted in the center of each stove burner 12L, 12R, and 12B, and is biased upward by a biasing spring and comes into contact with the bottom of the cooking container placed on the trivet 13 to detect the temperature of the cooking container. It is set up. An exhaust port 41 (see FIGS. 2 and 3) is provided at the rear of the top plate 2 to discharge combustion exhaust from a grill (not shown) installed inside the appliance body 11. An exhaust port cover 15 is placed to cover the top.

The appliance body 11 has a substantially rectangular box shape, and a grill for grill cooking is installed inside the appliance body 11. On the front of the appliance body 11, there are a grill door 16 of the grill, a power switch 17 for turning on and off the power to the cooking device 1, and a stove for controlling the ignition and extinguishing of each stove burner 12L, 12R, and 12B, and adjusting the firepower. Operators 18L, 18R, and 18B, and a grill operator 19 that performs operations such as igniting and extinguishing a grill burner (not shown) and adjusting firepower are provided.

As shown in FIG. 2, the top plate part 2 includes a top plate main body 20 that constitutes the upper surface, a rear plate 4 arranged on the rear side of the top plate main body 20, and a back surface of the top plate main body 20 and the rear plate 4. It has a back plate 5 arranged thereon.
The rear plate 4 has a generally rectangular shape that extends long in the left-right direction, and is formed to have the same outer shape as the exhaust plate portion 8 at the rear of the back plate 5 . The rear plate 4 is provided with three exhaust ports 41 and can be formed by pressing a metal plate such as a stainless steel plate. This rear plate 4 is attached on the exhaust plate part 8 at the rear of the back plate 5 and is arranged so as to cover the upper side of the horizontally elongated opening 81 opened in the exhaust plate part 8.

The top plate main body 20 is a main component constituting the upper surface of the top plate portion 2, and has a substantially rectangular shape extending in the front-rear direction and the left-right direction. Although this top plate main body 20 is formed of a glass plate, it is not limited to the glass plate and may be formed of a ceramic plate or the like. The back plate 5 is bonded to the back surface of the top plate main body 20 with an adhesive member 63. The outer shape of the top plate main body 20 is formed to be slightly smaller than the outer shape of the back plate 5 (see FIG. 4(b)). Thereby, even if an object collides with the outer peripheral side of the top plate part 2, the object can be prevented from coming into contact with the outer peripheral part of the top plate main body 20, which is a glass plate, and the top plate main body 20 can be protected.

The top plate main body 20 has three burner openings 21L, 21R, and 21B corresponding to the three stove burners 12L, 12R, and 12B. On the upper surface of the top plate main body 20, an annular burner ring 22 is arranged in each burner opening 21L, 21R, and 21B. The burner ring 22 is used to position the ignition electrode, flame detector (not shown), trivet 13, etc. placed therein, and to close the gaps between the stove burners 12L, 12R, 12B and the burner openings 21L, 21R, 21B. installed for. As shown in FIG. 3, on the bottom surface of the top plate body 20, there is a mounting plate provided with three mounting holes (not shown) corresponding to the three burner openings 21L, 21R, and 21B of the top plate body 20. 24, and a lower ring 23 which is disposed at each attachment port and holds the burner ring 22 on the lower surface of the attachment plate 24. By arranging the mounting plate 24 on the bottom surface of the top plate main body 20 and connecting and attaching each burner ring 22 on the top surface of the top plate main body 20 and each lower ring 23 on the bottom surface of the mounting plate 24, three burner The ring 22 is held in the correct positional relationship with the three stove burners 12L, 12R, and 12B. The burner ring 22, the lower ring 23, and the mounting plate 24 can be formed by pressing a metal plate such as a stainless steel plate.

The back plate 5 is an integral component bonded to the back surface of the top plate main body 20 with an adhesive member 63, and has a substantially rectangular shape extending in the front-rear direction and the left-right direction. The back plate 5 includes a back plate upper surface part 6 that is bonded to the top plate main body 20 via an adhesive member 63, an exhaust plate part 8 connected to the rear side of the back plate upper surface part 6, and a back plate upper surface part. 6 and a back plate frame body part 7 provided around the peripheral edge of the integral part of the exhaust plate part 8. The back plate 5 has a structure in which a back plate upper surface part 6, an exhaust plate part 8, and a back plate frame body part 7 are integrated, and is made of a metal plate such as a stainless steel plate that is pressed, drawn, etc. can be formed.

The exhaust plate 8 has a horizontally elongated opening 81 that communicates with the inside of the grill, and the rear plate 4 provided with an exhaust port 41 is attached to the upper surface of the exhaust plate 8. Note that the back plate 5 may be one without the exhaust plate part 8 or one in which the exhaust plate part 8 is formed separately.

The back plate frame body part 7 has a side wall part 71 that hangs down from a peripheral edge that forms the outer periphery of the integral part of the back plate upper surface part 6 and the exhaust plate part 8, and an inner wall part that extends inward from the lower end of the side wall part 71. It has a flange portion 72 (see FIG. 4(b)). In this way, the back plate 5 has a structure in which the back plate frame body part 7 is integrated with the back plate upper surface part 6 and the exhaust plate part 8, so that the rigidity of the back plate 5 is increased and the top plate part 2, the cost of the top plate portion 2 can be reduced, and the like.

The back plate upper surface part 6 has a substantially rectangular shape extending in the front-rear direction and the left-right direction, and is formed in the shape of a band ring with a large rectangular opening 61 in the center. In the rectangular opening 61 of the back plate upper surface part 6, a mounting plate 24 that is attached to the lower surface of the top plate main body 20 when the top plate main body 20 is adhered to the upper surface of the back plate upper surface part 6 is arranged. Note that the back plate upper surface portion 6 may have a structure in which the mounting plate 24 is integrated without providing the rectangular opening 61, and may cover the entire back surface of the top plate main body 20.

The back plate upper surface part 6 has L-shaped through holes 3 that vertically penetrate the back plate upper surface part 6 near the left and right corners 51L and 51R on the front side of the back plate 5. In the embodiment, stove burners 12L and 12R are arranged on the left and right sides of the front side of the top plate portion 2, and corner portions near each stove burner 12L and 12R (corner portions surrounded by dotted circles in FIG. 1) A through hole 3 is provided correspondingly. In addition, in the back plate upper surface part 6, three first elongated holes 65 are arranged in two rows in the left and right direction and are arranged in parallel on the peripheral edge of the front side and vertically penetrate through the back plate upper surface part 6 and extend in the left and right direction. Three second elongated holes 66 are arranged in the front-back direction, and are arranged in parallel on the peripheral edges of each of the left and right sides, vertically penetrating the back plate upper surface 6, and extending in the front-back direction. The through hole 3 and the first and second elongated holes 65 and 66 of the back plate 5 are arranged outside the opening on the top surface of the appliance main body 11 when the top plate part 2 is installed on the counter top 10. . As a result, even if the top plate main body 20 is a transparent glass plate, for example, external light such as sunlight can pass through the top plate main body 20 and pass through the through hole 3 and the first and second elongated holes 65 and 66 into the appliance main body. There is no possibility that the inside of the instrument main body 11 will be seen as shining from the outside due to intrusion into the inside of the instrument body 11.

As shown in FIG. 4(a), the through hole 3 provided in the upper surface part 6 of the back plate includes a front-rear penetration part 31 arranged in parallel on the peripheral edge extending in the front-rear direction of the back plate 5, and a front-rear penetration part 31 provided in the left and right sides of the back plate 5. The back plate 5 has a left-right penetrating portion 32 arranged in parallel on a peripheral edge extending in the direction, and the front-back penetrating portion 31 and the left-right penetrating portion 32 are continuous in the vicinity of the corner portion 51 of the back plate 5. That is, in the two through holes 3 formed in the back plate 5 shown in FIG. The board 5 has a left-right penetrating portion 32 arranged in parallel on the front side of the plate 5, and has an L-shape in which the front-back penetrating portion 31 and the left-right penetrating portion 32 are continuous in the vicinity of the front left corner portion 51L. . The through hole 3 near the front right corner portion 51R has a front-rear penetration part 31 arranged in parallel on the right side of the back plate 5, and a left-right direction penetration part 32 arranged in parallel on the front side of the back plate 5, Near the front right corner portion 51R, an L-shape is formed in which an anteroposterior penetrating portion 31 and a left-right penetrating portion 32 are continuous. In this way, the through holes 3 are continuously formed in the vicinity of the corner portion 51 of the back plate 5 so as to be parallel to the corner portion 51 .

The back plate upper surface portion 6 has a peripheral edge adhesive portion 62 that is bonded to the peripheral edge portion of the back surface of the top plate main body 20 via an adhesive member 63. The peripheral adhesive portion 62 is formed in an annular shape along the four sides of the upper surface portion 6 of the back plate. As shown in FIG. 4(b), this peripheral edge adhesive part 62 has a concave groove part 64 that is constricted downward from the upper surface of the back plate upper surface part 6, and an adhesive material such as silicone rubber is formed in this concave groove part 64. 63 is applied, and the peripheral edge of the back surface of the top plate main body 20 disposed opposite to the top surface of the back plate upper surface portion 6 is adhered by this adhesive member 63. In addition to the structure in which the adhesive member 63 is applied to the concave groove portion 64, the peripheral adhesive portion 62 has a structure in which double-sided tape serving as the adhesive member 63 is pasted along the four sides of the upper surface portion 6 of the back plate on the upper surface of the upper surface portion 6 of the back plate. A configuration may also be used.

The through hole 3 provided near the corner portion 51 of the back plate 5 is provided on the inner side toward the center of the back plate upper surface portion 6 than the peripheral adhesive portion 62 (see FIG. 4(a) and FIG. 2). ). In addition, the first and second elongated holes 65 and 66 provided near the front side and left and right sides of the back plate 5 are also provided inward from the peripheral adhesive portion 62 (see FIG. 2). ). The inner circumferential end 33 of the through hole 3 is slightly bent downward and is formed so as not to protrude above the upper surface of the back plate upper surface 6 (see FIG. 4(b)). Thereby, the top plate main body 20 is reliably bonded to the back plate upper surface portion 6 at the corner portion of the top plate portion 2, and is also reliably bonded to the adhesive member 63 of the peripheral edge bonding portion 62 near the corner portion 51. Although not shown, the first and second elongated holes 65 and 66 are similarly formed so that their inner circumferential ends are slightly bent downward so that they do not protrude above the upper surface of the back plate upper surface portion 6. The top plate main body 20 and the back plate upper surface portion 6 are reliably bonded to the adhesive members 63 of the peripheral adhesive portions 62 on the front side, left and right sides.

By the way, when the back plate 5 of the top plate part 2 is configured with the back plate frame part 7 and the back plate top part 6 as an integrated member, the back plate frame part 7 and the back plate top part 6 can be separated. The rigidity of the back plate 5 is higher than that of a structure made of members. During cooking, in which a cooking container placed on the trivet 13 is heated by burning the stove burner 12 in the heating cooker 1, the top plate 2 becomes high temperature due to the heat from the cooking container and the stove burner 12, and the back plate 5 becomes hot. When distortion occurs due to thermal expansion, the thermally deformed shape is easily maintained due to the high rigidity of the back plate 5. In particular, when the corner portion 51 of the back plate 5 is thermally deformed by warping upward, the top plate main body 20 This tends to cause a phenomenon in which the corner portion of the top plate portion 2 lifts up from the counter top 10. For example, when cooking stove burners 12L and 12R are arranged on the left and right sides on the front side of the top plate part 2 as in the heating cooker 1 shown in FIG. , the corner portion surrounded by the dotted line circle), the left and right cooking stove burners 12L, 12R are arranged close to each other, and therefore are easily affected by the heat of the cooking container and the cooking stove burners 12L, 12R. If a rise occurs in the front corner of the top plate 2, even if it is only a few millimeters, it will be noticeable to the user standing in front of the cooking device 1, and the appearance of the cooking device 1 will be spoiled. .

In this embodiment, a back plate upper surface portion 6 is provided near the front left and right corner portions 51L and 51R of the back plate 5, corresponding to the corner portions of the top plate portion 2 near the front left and right stove burners 12L and 12R. Since the through hole 3 is formed to penetrate vertically, the strength in the vertical direction can be reduced at the front left and right corner portions 51L and 51R of the back plate 5 due to the through hole 3. Therefore, even if the back plate 5 is thermally expanded and distorted due to the heating of the stove burners 12L and 12R during cooking, the corner portions 51L and 51R of the back plate 5 will move upward so as to push up the top plate main body 20. It does not have the strength to deform, and is suppressed from warping and deforming.

The through-hole 3 has an L-shape in which a front-rear through-hole 31 and a left-right through-hole 32 are continuously bored near the corner 51 . Since it is formed continuously along the corner portion 51 of the back plate 5, the strength can be reduced only in the necessary portion near the corner portion 51 of the back plate 5. Therefore, even if the back plate 5 is distorted due to thermal expansion during cooking, the front-rear direction penetration part 31 and the left-right direction penetration part 32 in the through-hole 3 will prevent each peripheral edge of the corner part 51 of the back plate 5 from being distorted. It is possible to reliably prevent the sides from warping upward and deforming. That is, in the front left corner portion 51L of the back plate 5, thermal deformation on each peripheral edge side of the left side and the front side is suppressed, and upward warpage of the entire front left corner portion 51L is suppressed. In the front right corner portion 51R of the back plate 5, thermal deformation at each peripheral edge side of the right side and the front side is suppressed, and upward warping of the entire front right corner portion 51R is suppressed. Further, the through hole 3 is formed on the inner side of the peripheral adhesive part 62, and the back plate 5 is bonded to the top plate main body 20 on the outer side of the through hole 3, so that the corner of the back plate 5 is It is possible to more reliably prevent the portion 51 from warping upward and deforming.

In addition, the front-rear direction penetration part 31 and the left-right direction penetration part 32 of the through-hole 3 relieve the stress concentration of thermal expansion from the front-back direction and the left-right direction in the corner parts 51L and 51R of the back plate 5, and the back plate It is expected that thermal deformation of the corner portions 51L and 51R of No. 5 can be suppressed. The first and second elongated holes 65 and 66 provided in the upper surface part 6 of the back plate are arranged in a row in the length direction of the holes, so that the corner part 51L can be seen from the front and back direction and the left and right direction of the peripheral edge of the back plate 5. , 51R is expected to alleviate stress concentration due to thermal expansion.

As described above, according to the heating cooker 1 of the present embodiment, the corner portions 51L and 51R of the back plate 5 are prevented from being warped and deformed during cooking, so that the corner portions of the top plate portion 2 are The phenomenon of floating can be reliably suppressed, and the appearance quality of the heating cooker 1 can be ensured favorably. In addition, by making the back plate 5 have a structure in which the back plate upper surface part 6, the exhaust plate part 8, and the back plate frame body part 7 are integrated, the structure of the top plate part 2 can be simplified, and the top plate part 2 can be Cost reduction can be achieved.

Note that the present invention is not limited to the embodiments described above, and various changes can be made within the scope of the claims.
For example, the shape of the through-hole 3 is not limited to the L-shape as in the embodiment, but may reduce the strength in the vertical direction at the corner portion 51 of the back plate 5 to prevent distortion due to thermal expansion of the back plate 5 during cooking. Any shape can be used as long as it can suppress the lifting phenomenon of the corners of the top plate 2 even if it occurs. As an example, as shown in FIG. 5, a circular hole 3a (FIG. 5(a)), an oblique long hole 3b (FIG. 5(b)) that forms a triangle with the corner part 51 of the back plate 5, A plurality of oblique long holes 3c (FIG. 5(c)) that are not connected, a plurality of diagonally arranged circular holes 3d (FIG. 5(d)), a triangular hole 3e (FIG. 5(e)), Various shapes can be used, such as a hole 3f (FIG. 5(f)). Further, the shape of the through hole 3 may be, for example, such that it has a shape portion that approaches each peripheral edge portion of two sides forming the corner portion 51 of the back plate 5.

The through hole 3 may be provided near at least one corner portion 51 of the back plate 5, or may be provided near three corner portions 51 of the back plate 5, or near all four corner portions 51 of the back plate 5. It may be provided.

When the through holes 3 are provided near three or less corner portions 51 of the back plate 5, any corner portion 51 of the four corner portions 51 of the back plate 5 can be selected. For example, the through hole 3 may be provided near the corner portion 51 of the back plate 5 closest to the stove burner 12. Further, when one of the two front left and right stove burners 12L, 12R is a high power burner, the through hole 3 may be provided near the corner portion 51 of the back plate 5 near the high power burner.

1 Cooking device 2 Top plate part 3 Through hole 4 Rear plate 5 Back plate 6 Back plate top part 7 Back plate frame part 8 Exhaust plate part 10 Counter top 11 Appliance body 12 Stove burner 13 Trivet 14 Temperature sensor 15 Exhaust port Cover 16 Grill door 17 Power switch 18 Stove operator 19 Grill operator 20 Top plate body 21 Burner opening 22 Burner ring 23 Lower ring 24 Mounting plate 31 Front-rear penetration 32 Lateral penetration 33 Inner end 41 Exhaust Mouth 51 Corner portion 61 Rectangular opening 62 Peripheral adhesive portion 63 Adhesive member 64 Concave groove portion 65 First elongated hole 66 Second elongated hole 71 Side wall portion 72 Inner flange portion 81 Horizontally elongated opening

Claims (3)

It has a generally rectangular top plate portion that covers the upper part of the opening on the top surface of the device body and extends in the front-rear direction and the left-right direction,
The top plate portion includes a generally rectangular top plate body extending in the front-rear direction and the left-right direction, and a top plate body that is bonded to the back surface of the top plate body with an adhesive member, and extends in the front-rear direction and the left-right direction. It has an extended substantially rectangular back plate,
The back plate has a back plate upper surface portion that is bonded to the top plate main body via the adhesive member, and a back plate frame body provided around a peripheral edge of the back plate upper surface portion,
A heating cooking appliance, wherein the upper surface of the back plate near at least one corner of the back plate is provided with a through hole that vertically penetrates the upper surface of the back plate. The heating cooker according to claim 1,
The through hole has a front-rear penetration part arranged in parallel on the front-rear peripheral edge of the back plate, and a left-right penetration part arranged in parallel on the left-right peripheral edge of the back plate,
In the heating cooking device, the longitudinal direction penetrating portion and the left-right direction penetrating portion are continuous in the vicinity of the corner portion. The heating cooker according to claim 1 or 2,
The upper surface part of the back plate has a peripheral edge adhesive part that is adhered to the peripheral edge part of the top plate main body via the adhesive member,
The cooking device is characterized in that the through hole is formed on the inner side of the peripheral adhesive part.

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