Heating Regulator

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]

[0001] The present invention relates to a cooking appliance having a top plate portion that covers the upper portion of an opening on the top surface of the appliance body. [Background technology]

[0002] Conventionally, in a cooking appliance, a rectangular top plate portion covering the upper part of an opening on the top surface of the appliance body comprises a top plate body and a back plate, and the back plate has a peripheral frame body and an extension plate attached to the inner peripheral end of the peripheral frame body, and the back plate is adhered to the back surface of the top plate body with adhesive (for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-10281 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when a back plate is constructed by integrating a peripheral frame and an extended plate for the purposes of simplifying the top plate configuration and reducing costs, the integrated structure increases the rigidity of the back plate. During cooking in a cooking appliance, when a cooking container placed on the top plate is heated by a heating unit provided on the top plate, the top plate becomes hot. If the back plate distorts due to thermal expansion, the high rigidity of the back plate makes it more likely to maintain the warped shape that pushes the top plate body upward, particularly causing the corners of the top plate to lift up. Lifting of the corners of the top plate causes the problem of marring the appearance of the cooking appliance.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a cooking appliance that can prevent the corners of the top plate from lifting up, thereby ensuring the appearance quality of the cooking appliance. [Means for solving the problem]

[0006] The cooking device according to the present invention comprises: a top plate portion having a substantially rectangular shape that covers an upper portion of an opening on an upper surface of the appliance body and extends in the front-rear direction and the left-right direction; The top panel portion has a generally rectangular top panel main body extending in the front-rear direction and the left-right direction, and a generally rectangular back panel adhered to a rear surface of the top panel main body with an adhesive member and extending in the front-rear direction and the left-right direction, The back plate has a back plate upper surface portion that is adhered to the top plate body via the adhesive member, and a back plate frame portion that is provided around the peripheral edge of the back plate upper surface portion, The back plate has an upper surface portion near at least one corner portion thereof provided with a through-hole that passes through the upper surface portion of the back plate in the vertical direction.

[0007] According to the above configuration, the rigidity of the back plate is increased by providing a back plate frame around the peripheral edge of the upper surface of the back plate and integrating the upper surface of the back plate frame. In a back plate with increased rigidity, through-holes near the corners of the back plate can reduce the vertical strength of the corners of the back plate. Therefore, even if distortion occurs due to thermal expansion of the back plate during cooking, the corners of the back plate are prevented from warping up and pushing up against the top plate body. This prevents the corners of the top plate from lifting up during cooking, ensuring the appearance quality of the cooking appliance. Furthermore, by integrating the back plate of the top plate with the upper surface of the back plate frame, the configuration of the top plate can be simplified and costs can be reduced.

[0008] In the cooking device, The through-hole has a front-rear through-hole portion provided in parallel to the front-rear peripheral edge portion of the back plate and a left-right through-hole portion provided in parallel to the left-right peripheral edge portion of the back plate, The longitudinal through-portion and the lateral through-portion may be configured to be continuous near the corner portion.

[0009] According to the above configuration, the through holes are formed continuously along the corners of the back plate, so that the strength of only the necessary portions near the corners of the back plate can be reduced. Therefore, even if the back plate is distorted due to thermal expansion during cooking, the through holes can reliably prevent the corners of the back plate from warping upward and deforming at the periphery in the front-to-back and left-to-right directions. Therefore, the phenomenon of the corners of the top plate lifting up during cooking can be reliably prevented, and the appearance quality of the cooking appliance can be further ensured.

[0010] In the cooking device, the back plate upper surface portion has a peripheral adhesive portion that is adhered to the peripheral portion of the top plate body via the adhesive member, The through-holes may be formed on the inner side of the peripheral bonded portion.

[0011] The back plate reduces the vertical strength of the corners on the outer side of the through holes, and by bonding the back plate on the outer side of the through holes to the top plate body, it is possible to more reliably prevent the corners of the back plate from warping upward and deforming. This reliably prevents the corners of the top plate from lifting up during cooking, thereby ensuring the quality of the appearance of the cooking appliance. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing the overall configuration of a cooking device according to an embodiment; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] 1A and 1B are enlarged views showing the vicinity of the corner of the back plate, where FIG. 1A is a top view showing the upper surface of the upper surface of the back plate near the corner, and FIG. 1B is a cross-sectional view of the top plate near the corner. [Figure 5] 10A and 10B are schematic diagrams showing modified shapes of through holes. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The cooking appliance 1 of the embodiment shown in FIG. 1 is an example of the cooking appliance of the present invention and is a built-in gas-fired stove that is installed by dropping into an opening in a countertop 10 of a system kitchen. The cooking appliance 1 of this embodiment is a gas stove that uses a gas burner as a heating unit, but the present invention is not limited to gas stoves and can be applied to any cooking appliance, such as an induction cooking appliance that uses an electromagnetic induction coil as a heating unit or a cooking appliance that uses an electric heater as a heating unit. The cooking appliance 1 includes a cooking appliance body 11 and a top plate 2 that covers an opening on the top surface of the cooking appliance body 11. In this specification, the front of the cooking appliance body 11 is referred to as the front of the cooking appliance 1, the depth direction of the cooking appliance body 11 when viewed from the front side is referred to as the front-rear direction, the width direction perpendicular to the front-rear direction is referred to as the left-right direction, and the height direction perpendicular to the front-rear direction is referred to as the up-down direction.

[0014] The top plate 2 has a generally rectangular shape extending in the front-to-back and left-to-right directions. In this specification, the term "generally rectangular shape" refers not only to a rectangular shape but also to shapes with rounded corners and sides. The shape of the top plate 2 includes not only shapes with four straight corners (the corners where two sides intersect) and straight sides, but also rounded shapes. Three (multiple) burners 12L, 12R, and 12B, which serve as heating elements, are arranged on the top surface of the top plate 2. A trivet 13 is placed at the location of each burner 12L, 12R, and 12B to support a cooking vessel (not shown), such as a pot or frying pan. A temperature sensor 14 is installed in the center of each burner 12L, 12R, and 12B. The temperature sensor 14 is biased upward by a spring and abuts against the bottom of the cooking vessel placed on the trivet 13 to detect the temperature of the cooking vessel. An exhaust port 41 (see Figures 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, and an exhaust port cover 15 is placed over the exhaust port 41.

[0015] The appliance body 11 has a generally rectangular box shape, and a grill for grill cooking is installed inside the appliance body 11. On the front of the appliance body 11 are arranged a grill door 16 for the grill, a power switch 17 for turning the power of the cooking appliance 1 on and off, stove operators 18L, 18R, 18B for operating the stove burners 12L, 12R, 12B to turn them on and off and adjust the heat, and a grill operator 19 for operating the grill burner (not shown) to turn it on and off and adjust the heat, and the like.

[0016] As shown in Figure 2, the top panel portion 2 has a top panel main body 20 that forms the upper surface, a rear panel 4 that is arranged on the rear side of the top panel main body 20, and a back panel 5 that is arranged on the back surface of the top panel main body 20 and the rear panel 4. The rear plate 4 has a generally rectangular shape that extends long in the left-right direction, and is formed in the same shape as the outer shape of 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. The rear plate 4 is attached to the exhaust plate portion 8 at the rear of the back plate 5, and is disposed so as to cover the top of a horizontally elongated opening 81 that is opened in the exhaust plate portion 8.

[0017] The tabletop body 20 is a main component that constitutes the top surface of the tabletop portion 2, and has a generally rectangular shape that extends in the front-to-back and left-to-right directions. The tabletop body 20 is formed from a glass plate, but is not limited to glass and may be formed from a ceramic plate or the like. A back plate 5 is adhered to the rear surface of the tabletop body 20 with an adhesive member 63. The outer shape of the tabletop body 20 is formed slightly smaller than the outer shape of the back plate 5 (see FIG. 4(b)). This prevents the object from coming into contact with the outer periphery of the glass tabletop body 20, thereby protecting the tabletop body 20, even if an object collides with the outer periphery of the tabletop portion 2.

[0018] The top plate body 20 has three burner openings 21L, 21R, and 21B corresponding to the three burners 12L, 12R, and 12B. A circular burner ring 22 is disposed on the top surface of the top plate body 20 in each of the burner openings 21L, 21R, and 21B. The burner rings 22 are installed to position the ignition electrodes and flame detectors (not shown), the trivet 13, etc., and to close gaps between the burners 12L, 12R, and 12B and the burner openings 21L, 21R, and 21B. As shown in FIG. 3 , the underside of the top plate body 20 is provided with a mounting plate 24 having three mounting holes (not shown) corresponding to the three burner openings 21L, 21R, and 21B of the top plate body 20, and a ring holder 23 that is disposed in each mounting hole on the underside of the mounting plate 24 and holds the burner rings 22. By placing the mounting plate 24 on the underside of the top plate body 20 and connecting and attaching each burner ring 22 on the top surface of the top plate body 20 to each ring bottom 23 on the underside of the mounting plate 24, the three burner rings 22 are held in the correct positional relationship with the three stove burners 12L, 12R, 12B. The burner rings 22, ring bottoms 23, and mounting plate 24 can be formed by pressing a metal plate such as a stainless steel plate.

[0019] The back plate 5 is an integrated component that is adhered to the back surface of the top plate main body 20 with an adhesive member 63, and has a generally rectangular shape that extends in the front-to-back and left-to-right directions. The back plate 5 has a back plate upper surface 6 that is adhered to the top plate main body 20 via the adhesive member 63, an exhaust plate 8 that is connected to the rear edge of the back plate upper surface 6, and a back plate frame 7 that is provided around the peripheral edge of the integrated portion of the back plate upper surface 6 and the exhaust plate 8. The back plate 5 has a configuration in which the back plate upper surface 6, the exhaust plate 8, and the back plate frame 7 are integrated, and can be formed by pressing, drawing, or the like, a metal plate such as a stainless steel plate.

[0020] The exhaust plate 8 has a horizontally long opening 81 that communicates with the interior of the grill, and a back plate 4 with an exhaust port 41 is attached to the upper surface of this exhaust plate 8. The back plate 5 may not have the exhaust plate 8, or may have the exhaust plate 8 formed separately.

[0021] The back plate frame 7 has a side wall 71 hanging down from the peripheral edge that forms the outer periphery of the integrated portion of the back plate upper surface 6 and the exhaust plate 8, and an inner flange 72 extending inward from the lower end of the side wall 71 (see FIG. 4(b)). In this way, by configuring the back plate 5 so that the back plate frame 7 is integrated with the back plate upper surface 6 and the exhaust plate 8, the rigidity of the back plate 5 is increased, and the configuration of the top plate 2 can be simplified and the cost of the top plate 2 can be reduced.

[0022] The back plate upper surface portion 6 has a generally rectangular shape extending in the front-rear and left-right directions, and is formed in the shape of a ring-shaped band plate with a large rectangular opening 61 in the center. When the tabletop main body 20 is adhered to the upper surface of the back plate upper surface portion 6, the mounting plate 24 attached to the underside of the tabletop main body 20 is placed inside the rectangular opening 61 of the back plate upper surface portion 6. Note that the back plate upper surface portion 6 may be configured to be integrated with the mounting plate 24 without providing the rectangular opening 61, and may be configured to cover the entire back surface of the tabletop main body 20.

[0023] The back plate upper surface 6 has L-shaped through holes 3 that penetrate vertically near each of the left and right corners 51L, 51R on the front edge of the back plate 5. In this embodiment, stove burners 12L, 12R are provided on the left and right sides of the front of the top plate 2, and through holes 3 are provided corresponding to the corners near each of the stove burners 12L, 12R (corners surrounded by dotted circles in FIG. 1). In addition, the back plate upper surface 6 has two rows of three first elongated holes 65 arranged side by side along the periphery of the front edge, penetrating the back plate upper surface 6 vertically and extending in the left-right direction, and three second elongated holes 66 arranged side by side along the periphery of each of the left and right sides, penetrating the back plate upper surface 6 vertically and extending in the front-to-rear direction. When the top plate portion 2 is installed on the countertop 10, the through-hole 3 and the first and second elongated holes 65, 66 in the back plate 5 are positioned outside the opening in the top surface of the fixture body 11. As a result, even if the top plate body 20 is a transparent glass plate, for example, external light such as sunlight will not penetrate the top plate body 20 and into the fixture body 11 through the through-hole 3 and the first and second elongated holes 65, 66, causing the inside of the fixture body 11 to appear shiny from the outside.

[0024] As shown in Fig. 4(a), the through holes 3 provided in the upper surface portion 6 of the back plate 5 have a front-rear through portion 31 arranged side by side on the peripheral edge portion extending in the front-rear direction of the back plate 5 and a left-right through portion 32 arranged side by side on the peripheral edge portion extending in the left-right direction of the back plate 5, and the front-rear through portion 31 and the left-right through portion 32 are connected near a corner portion 51 of the back plate 5. That is, of the two through holes 3 made in the back plate 5 shown in Fig. 2, the through hole 3 near the front left corner portion 51L has the front-rear through portion 31 arranged side by side on the left side of the back plate 5 and the left-right through portion 32 arranged side by side on the front side of the back plate 5, and forms an L shape where the front-rear through portion 31 and the left-right through portion 32 are connected near the front left corner portion 51L. The through-hole 3 near the front right corner 51R has a longitudinal through-hole 31 arranged side by side on the right side of the back plate 5 and a lateral through-hole 32 arranged side by side on the front side of the back plate 5, and forms an L-shape in which the longitudinal through-hole 31 and the lateral through-hole 32 are connected together near the front right corner 51R. In this way, the through-hole 3 is formed continuously next to the corner 51 of the back plate 5.

[0025] The back plate upper surface portion 6 has a peripheral adhesive portion 62 that is adhered to the peripheral portion of the back surface of the tabletop main body 20 via an adhesive member 63. The peripheral adhesive portion 62 is formed in a ring shape along the four sides of the back plate upper surface portion 6. As shown in FIG. 4( b), this peripheral adhesive portion 62 has a recessed groove portion 64 that is drawn downward from the upper surface of the back plate upper surface portion 6, and an adhesive member 63 such as silicone rubber is applied within this recessed groove portion 64. The peripheral adhesive portion 62 may be configured such that the adhesive member 63 is applied to the recessed groove portion 64, or alternatively, double-sided tape that serves as the adhesive member 63 may be attached to the upper surface of the back plate upper surface portion 6 along the four sides of the back plate upper surface portion 6.

[0026] The through holes 3 provided near the corners 51 of the back plate 5 are located inward of the peripheral adhesive portion 62, i.e., toward the center of the back plate upper surface 6 (see FIGS. 4(a) and 2). The first and second elongated holes 65, 66 provided near the front edge and each of the left and right edges of the back plate 5 are also located inward of the peripheral adhesive portion 62 (see FIG. 2). The inner peripheral end 33 of the through hole 3 is slightly bent downward so as not to protrude above the upper surface of the back plate upper surface 6 (see FIG. 4(b)). This ensures that the top plate main body 20 is tightly attached to the back plate upper surface 6 at the corners of the top plate 2, and is also securely bonded to the adhesive member 63 of the peripheral adhesive portion 62 near the corners 51. Although not shown, the first and second long holes 65, 66 are also formed so that the inner peripheral ends are slightly bent downward so as not to protrude above the upper surface of the back plate upper surface portion 6, and the top plate body 20 and the back plate upper surface portion 6 are securely adhered to the adhesive members 63 of the peripheral adhesive portions 62 on the front edge and left and right edges.

[0027] Incidentally, when the back plate 5 of the top plate portion 2 is configured with the back plate frame portion 7 and the back plate upper surface portion 6 as an integrated member, the rigidity of the back plate 5 is increased compared to when the back plate frame portion 7 and the back plate upper surface portion 6 are configured as separate members. When cooking in the cooking appliance 1 by burning the stove burner 12 to heat a cooking container placed on the trivet 13, the heat from the cooking container and the stove burner 12 causes the top plate portion 2 to become hot, and when the back plate 5 thermally expands and distorts, the high rigidity of the back plate 5 makes it easier for the thermally deformed shape to be maintained. In particular, when the corner portions 51 of the back plate 5 are thermally deformed by warping upward, this pushes the top plate main body 20 upward, and the corner portions of the top plate portion 2 are likely to lift off the countertop 10. For example, in the case of the cooking appliance 1 shown in Fig. 1, where the left and right burners 12L and 12R are arranged on the left and right sides of the front of the top plate 2, the left and right corners of the front of the top plate 2 (corners circled by dotted lines in Fig. 1) are easily affected by the heat of the cooking vessel and the burners 12L and 12R because the left and right burners 12L and 12R are arranged close to each other. If the front corners of the top plate 2 are raised, even if it is only a few millimeters, it will be noticeable to a user standing in front of the cooking appliance 1 and will spoil the appearance of the cooking appliance 1.

[0028] In this embodiment, in correspondence with the corners of the top plate 2 near the front left and right stove burners 12L and 12R, through-holes 3 that penetrate the top surface 6 of the back plate 5 in the vertical direction are provided in the vicinity of the front left and right corners 51L and 51R of the back plate 5, and these through-holes 3 can reduce the strength in the vertical direction at the front left and right corners 51L and 51R of the back plate 5. Therefore, even if the back plate 5 thermally expands and distorts due to the heating of the stove burners 12L and 12R during cooking, the corners 51L and 51R of the back plate 5 do not have the strength to deform upward so as to push up the top plate body 20, and warping and deformation are suppressed.

[0029] The through-hole 3 has an L-shape in which the front-rear through-hole 31 and the left-right through-hole 32 are connected near the corner 51, and because this L-shaped through-hole 3 is formed continuously along the corner 51 of the back plate 5, it is possible to reduce the strength of only the necessary portion near the corner 51 of the back plate 5. Therefore, even if the back plate 5 is distorted due to thermal expansion during cooking, the front-rear through-hole 31 and the left-right through-hole 32 of the through-hole 3 can reliably prevent upward warping and deformation at each peripheral edge of the corner 51 of the back plate 5. That is, at the front left corner 51L of the back plate 5, thermal deformation is suppressed at each peripheral edge of the left side and front side, and upward warping of the entire front left corner 51L is suppressed. At the front right corner 51R of the back panel 5, thermal deformation is suppressed at the peripheral edges of the right and front sides, and upward warping of the entire front right corner 51R is suppressed. Furthermore, since the through-hole 3 is located inward of the peripheral adhesive portion 62 and the back panel 5 is bonded to the top panel main body 20 on the outer side of the through-hole 3, upward warping and deformation of the corner 51 of the back panel 5 can be more reliably suppressed.

[0030] The front-to-rear through portion 31 and the left-to-right through portion 32 of the through hole 3 are expected to alleviate stress concentration due to thermal expansion from the front-to-rear and left-to-right directions at the corner portions 51L, 51R of the back plate 5, thereby suppressing thermal deformation of the corner portions 51L, 51R of the back plate 5. The first and second elongated holes 65, 66 provided in the back plate upper surface portion 6 are aligned in the length direction of the holes, and are therefore expected to alleviate stress concentration due to thermal expansion from the front-to-rear and left-to-right directions at the peripheral portion of the back plate 5 to the corner portions 51L, 51R.

[0031] As described above, according to the cooking appliance 1 of this embodiment, the corners 51L, 51R of the back plate 5 are prevented from warping up and deforming during cooking, which reliably prevents the corners of the top plate 2 from lifting up, thereby ensuring a good appearance quality of the cooking appliance 1. Furthermore, by configuring the back plate 5 so that the back plate upper surface 6, the exhaust plate 8, and the back plate frame 7 are integrated together, the configuration of the top plate 2 can be simplified and the cost of the top plate 2 can be reduced.

[0032] The present invention is not limited to the above-described embodiment, and various modifications 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 shown in the embodiment, and can be any shape that reduces the vertical strength of the corner portion 51 of the back plate 5 and prevents the corner portion 2 from lifting up even if the back plate 5 thermally expands and distorts during cooking. As shown in FIG. 5, various shapes are possible, such as a circular hole 3a (FIG. 5(a)), a diagonal elongated hole 3b (FIG. 5(b)) that forms a triangle with the corner portion 51 of the back plate 5, multiple diagonal elongated holes 3c (FIG. 5(c)), multiple diagonally arranged circular holes 3d (FIG. 5(d)), a triangular hole 3e (FIG. 5(e)), and a V-shaped hole 3f (FIG. 5(f)). Furthermore, the shape of the through-hole 3 can be, for example, such that it has a shaped portion that approaches each of the peripheral edges of the two sides that form the corner portion 51 of the back plate 5.

[0033] The through holes 3 may be provided near at least one corner 51 of the back plate 5, or may be provided near three corners 51 of the back plate 5, or near all four corners 51 of the back plate 5.

[0034] When the through holes 3 are provided near three or fewer corners 51 of the back plate 5, any of the four corners 51 of the back plate 5 can be selected. For example, the through holes 3 may be provided near the corner 51 of the back plate 5 closest to the stove burner 12. Furthermore, if one of the two stove burners 12L, 12R on the left and right front sides is a high-power burner, the through holes 3 may be provided near the corner 51 of the back plate 5 closest to this high-power burner. [Explanation of symbols]

[0035] 1 Cooker 2 Top plate 3 Through holes 4 Rear plate 5 Back plate 6 Back plate top 7 Back plate frame body 8 Exhaust plate 10. Countertop 11. Instrument body 12 Convection Burner 13 Trivet 14 Temperature Sensor 15 Exhaust vent cover 16 Grill door 17 Power switch 18 Stovetop controls 19 Grill control 20 Top board body 21 Burner opening 22 Burner Ring 23 Under the Ring 24 Mounting plate 31 Front and rear penetration 32 Left-right direction penetration part 33 Inner edge 41 Exhaust port 51 Corner 61 Rectangular opening 62 Peripheral adhesive part 63 Adhesive materials 64 Groove 65 First slot 66 Second slot 71 Side wall 72 Inner flange 81 Horizontal opening

Claims

1. a top plate portion having a substantially rectangular shape that covers an upper portion of an opening on an upper surface of the appliance body and extends in the front-rear direction and the left-right direction; The top panel portion has a generally rectangular top panel main body extending in the front-rear direction and the left-right direction, and a generally rectangular back panel adhered to a rear surface of the top panel main body with an adhesive member and extending in the front-rear direction and the left-right direction, The back plate has a back plate upper surface portion that is adhered to the top plate body via the adhesive member, and a back plate frame portion that is provided around the peripheral edge of the back plate upper surface portion, a through-hole that passes through the upper surface of the back plate in the vertical direction is formed in the upper surface of the back plate near at least one corner of the back plate; The cooking device, wherein the through hole is configured as a single through hole having a shaped portion that approaches each peripheral edge portion of two sides that form the corner portion of the back plate.

2. A top plate portion having a substantially rectangular shape that covers the upper portion of the opening on the top surface of the device body and extends in the front-to-back and left-to-right directions, The top panel portion has a generally rectangular top panel main body extending in the front-rear direction and the left-right direction, and a generally rectangular back panel adhered to a rear surface of the top panel main body with an adhesive member and extending in the front-rear direction and the left-right direction, The back plate has a back plate upper surface portion that is adhered to the top plate body via the adhesive member, and a back plate frame portion that is provided around the peripheral edge of the back plate upper surface portion, a through-hole that passes through the upper surface of the back plate in the vertical direction is formed in the upper surface of the back plate near at least one corner of the back plate; The through-hole has a front-rear through-hole portion provided in parallel to the front-rear peripheral edge portion of the back plate and a left-right through-hole portion provided in parallel to the left-right peripheral edge portion of the back plate, The cooking device, wherein the front-rear through-portion and the left-right through-portion are continuous near the corner portion.

3. The cooking device according to claim 1 or 2, the back plate upper surface portion has a peripheral adhesive portion that is adhered to the peripheral portion of the top plate body via the adhesive member, The through-hole is formed on the inner side of the peripheral bonded portion.

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