JP7324996B2 - heating cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating cooker provided with a grill chamber for storing and cooking foodstuffs.

For example, the heating cooker disclosed in Patent Literature 1 has a grill chamber provided with a heating space for storing and cooking foodstuffs such as fish. This grill storage accommodates a grill plate on which food is placed. Also, the bottom plate of the grill chamber is made of a glass plate. A heating coil for induction heating of the grill pan is arranged below the glass plate.

JP 2014-113189 A

By the way, in the case of the grill chamber of the heating cooker of Patent Document 1, the bottom surface of the heating space is a glass plate, and the heating coil is arranged outside the heating space, so the inside of the heating space can be easily cleaned. However, as a result of studies by the inventors, it has been found that the thermal efficiency decreases depending on the material of the bottom surface of the heating space.

Accordingly, it is an object of the present invention to provide a heating cooker in which the inside of the heating space can be easily cleaned and the reduction in thermal efficiency can be suppressed.

According to one aspect of the invention,
A heating cooker having a grill chamber,
The grill store
an inner case provided with a heating space in which foodstuffs are accommodated and heated;
an outer case that houses the inner case;
a first heater disposed in a space between the inner case and the outer case;
In the range of the output wavelength of the first heater, the portion of the inner case located between the heating space and the first heater is the portion of the outer case on the opposite side of the first heater. A cooker is provided that has a high emissivity compared to a

ADVANTAGE OF THE INVENTION According to this invention, the heating cooker which can clean the inside of heating space easily, and can suppress the fall of thermal efficiency can be provided.

1 is a perspective view of a heating cooker according to one embodiment of the present invention; Perspective view of the heating cooker with the top plate removed A perspective view of the heating cooker showing a state of being mounted on the housing of the grill chamber. Perspective view of the grill compartment with the grill door closed Perspective view of the grill compartment with the grill door open Cross-sectional view of the heating cooker showing the inside of the grill chamber Perspective view of heating cooker with grill door omitted Disassembled perspective view of main body of grill storage Graph showing changes in inner case bottom surface temperature and grill pan temperature when the bottom plate portion of the inner case is enamel-processed (Example 1) and when it is not enamel-processed (Comparative Example 1). The figure which shows the relationship between the wavelength of an infrared ray and emissivity in the case where black paint is performed on a metal plate (Example 2). The figure which shows the relationship between the wavelength of infrared rays and the emissivity when the metal plate is not painted black (comparative example 2). Top view of bottom plate of inner case Perspective view showing the rear surface of the grill door FIG. 7 is a partially enlarged view of FIG. 6 showing the contact between the grille door and the front panel of the main body;

One aspect of the present invention is a heating cooker having a grill chamber, wherein the grill chamber includes an inner case including a heating space in which food is stored and heated, an outer case that stores the inner case, and the inner side. a first heater arranged in a space between the case and the outer case, wherein the range of the output wavelength of the first heater is positioned between the heating space and the first heater; A portion of the inner case has a higher emissivity than a portion of the outer case on the opposite side of the first heater.

According to this aspect, it is possible to provide a heating cooker in which the inside of the heating space can be easily cleaned and a decrease in thermal efficiency can be suppressed.

The first heater may be an infrared heater that emits infrared rays with a wavelength range of 3.0 to 15.07 μm.

It is preferable that the emissivity of the portion of the inner case between the heating space and the first heater is 90% or more.

A surface on the side of the heating space and a surface on the side of the first heater in the portion of the inner case between the heating space and the first heater may be black.

A portion of the inner case between the heating space and the first heater may be an enamel member formed by covering a metal member with a black glass layer.

A portion of the inner case between the heating space and the first heater may be a bottom plate portion of the inner case.

The heating cooker may further include a second heater provided near the ceiling of the heating space.

A bottom plate portion of the inner case and a wall portion erected from the bottom plate portion may be integrated as one piece.

The inner case may have a food loading/unloading opening communicating with the heating space on the front side, and in this case, the bottom plate portion of the inner case may have a plurality of first ridges extending in the front-rear direction of the heating space. You may have a part. Thermal deformation of the bottom plate of the inner case is suppressed by the plurality of first ridges.

The bottom plate portion of the inner case may include a plurality of second ridges extending in the lateral direction of the heating space and intersecting the plurality of first ridges. Thermal deformation of the bottom plate of the inner case is further suppressed by the plurality of second ridges.

It is preferable that the width of the first ridge portion is smaller than the width of the second ridge portion. Cleanability of the bottom plate portion of the inner case is improved.

It is preferable that the number of the first ridges is larger than the number of the second ridges. Cleanability of the bottom plate portion of the inner case is improved.

It is preferable that the height of the first ridge portion is greater than the height of the second ridge portion. Cleanability of the bottom plate portion of the inner case is improved.

It is preferable that the width of the second protrusion near the center in the front-rear direction of the heating space is larger than the width of the second protrusion far from the center. Thermal deformation of the central portion of the bottom plate portion of the inner case is further suppressed.

The cooking device may further include a grill pan on which foodstuffs are placed and accommodated in the heating space. In this case, the inner case protrudes from the bottom plate portion toward the outside of the heating space. A stopper portion may be provided that contacts the grill pan that is pulled out. It is possible to prevent the grill plate from coming off from the grill storage.

Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art.

It is noted that the inventor(s) provide the accompanying drawings and the following description for a full understanding of the present disclosure by those skilled in the art and are intended to limit the claimed subject matter thereby. not something to do.

A heating cooker according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 13. FIG.

FIG. 1 is a perspective view of a heating cooker according to one embodiment of the present invention. FIG. 2 is a perspective view of the heating cooker with the top plate removed. The XYZ coordinate system shown in the drawing is for facilitating understanding of the invention, and is not intended to limit the invention. In the XYZ coordinate system, the X-axis direction is the horizontal direction of the heating cooker, the Y-axis direction is the front-rear direction, and the Z-axis direction is the height direction.

As shown in FIGS. 1 and 2, the heating cooker 10 according to the present embodiment is a so-called induction heating cooker, and includes a housing 12, a top plate 14 attached to the top of the housing 12, and a top plate 14. 14 and a plurality of induction heating coils 16 positioned below.

A housing 12 of the heating cooker 10 is made of, for example, a metal material and has a rectangular parallelepiped shape.

Top plate 14 includes a glass plate through which magnetic flux can pass. Top plate 14 is attached to the top of housing 12 so as to close the top opening of housing 12 . A cooking vessel such as a pot that is induction-heated by the induction heating coil 16 is placed on the top plate 14 .

The induction heating coil 16 induction heats the cooking vessel placed on the glass plate portion of the top plate 14 thereabove. The induction heating coil 16 is arranged in the upper part of the housing 12 , that is, near the lower surface of the top plate 114 . The induction heating coil 16 is operated by a user via an operation unit 18 arranged in front thereof.

In the case of this embodiment, the heat cooker 10 also has a grill chamber.

FIG. 3 is a perspective view of the heating cooker showing the state of being mounted on the housing of the grill chamber. Moreover, FIG. 4 is a perspective view of the grill storage with the grill door closed. Furthermore, FIG. 5 is a perspective view of the grill chamber with the grill door open. And FIG. 6 is sectional drawing of the heating cooker which shows the inside of a grill chamber.

FIG. 3 shows the housing 12 with the induction heating coil 16, the operating unit 18 and their associated components removed. As shown in FIG. 3, the grill chamber 20 is mounted in the left space 12a of the housing 12. As shown in FIG. Specifically, the internal space of the housing 12 is divided into a left space 12a and a right space 12b by a partition wall 12c.

As shown in FIGS. 4 and 5, the grill 20 is a substantially rectangular parallelepiped unit. The grill chamber 20 contains food such as fish, and has a main body 22 for grilling (cooking) the contained food, a grill door 24 for closing the main body 22, and an exhaust duct 26 for exhausting the inside of the main body 22. and

Specifically, as shown in FIG. 5, the main body portion 22 of the grill chamber 20 includes a front panel 28 forming the front surface thereof. The front panel 28 is formed with a food loading/unloading port 28a that opens toward the front of the heating cooker 10 (opens in the Y-axis direction). As shown in FIG. 7, which is a perspective view of the heating cooker 10 with the grill door 24 omitted, the front panel 28 of the main body 22 forms part of the front surface of the housing 12. As shown in FIG. Further, as shown in FIG. 6, the body portion 22 includes a heating space S1 in which foodstuffs are accommodated and heated.

In addition, in the case of the present embodiment, the grill chamber 20 includes a grill pan 30 that can be taken in and out of the heating space 22a through the food material loading and unloading opening 28a. Food is stored in the heating space S<b>1 of the main body 22 of the grill chamber 20 while being placed on the grill pan 30 . The front end of the grill pan 30 is detachably connected to the grill door 24, although the details will be described later. In addition, the grill pan 30 has two legs 30a at its rear portion, which are spaced apart in the left-right direction (X-axis direction).

In the case of the present embodiment, as shown in FIG. 6, the main body 22 (strictly speaking, the portion excluding the front panel 28) of the grill chamber 20 has a double structure, and accommodates an inner case 32 and an inner case 32. It is composed of an outer case 34 that The inner case 32 and the outer case 34 are substantially rectangular parallelepiped and open at the front ends.

FIG. 8 is an exploded perspective view of the main body of the grill chamber.

As shown in FIG. 8, the inner case 32 in the main body 22 of the grilling chamber 20 includes a bottom plate portion 32a, a right side wall portion 32b, a left side wall portion 32c, and a back plate portion 32d which stand upright from the bottom plate portion 32a. A top plate portion 32e supported by a right side wall portion 32b, a left side wall portion 32c, and a back plate portion 32d is provided so as to face the bottom plate portion 32a with a gap therebetween. In this embodiment, the bottom plate portion 32a, the right side wall portion 32b, and the left side wall portion 32c are integrated as one piece. The internal space of the inner case 32 functions as the heating space S1 of the main body 22 of the grill chamber 20. As shown in FIG.

The outer case 34 in the main body 22 of the grill chamber 20 includes a bottom plate portion 34a, a right side wall portion 34b, a left side wall portion 34c, and a back wall portion 34d which stand upright from the bottom plate portion 34a, and are spaced apart from the bottom plate portion 34a. A top plate portion 34e supported by the right side wall portion 34b, the left side wall portion 34c, and the back wall portion 34d is provided so as to face each other with a gap therebetween. In this embodiment, the bottom plate portion 34a, the right side wall portion 34b, and the left side wall portion 34c are integrated as one piece. The inner case 32 is accommodated in the inner space of the outer case 34 .

In the case of the present embodiment, as shown in FIG. 6, the main body 22 of the grill chamber 20 includes first and second heating elements for heating and cooking the foodstuffs (the foodstuffs on the grill pan 30) housed in the heating space S1. of heaters 36, 38 are provided.

In this embodiment, the first and second heaters 36 and 38 are infrared heaters that emit infrared rays with a wavelength range of 3.0 to 15.07 μm, as shown in FIG.

As shown in FIG. 6, the first heater 36 is arranged in a space S2 between the bottom plate portion 32a of the inner case 32 and the bottom plate portion 34a of the outer case 34. As shown in FIG. The second heater 38 is arranged near the ceiling of the heating space S<b>1 , that is, along the lower surface of the top plate portion 32 e of the inner case 32 . The first heater 36 is separated from the bottom plate portion 32a of the inner case 32 and the bottom plate portion 34a of the outer case 34 by cantilever-shaped support members 40 attached to the right side wall portion 34b and the left side wall portion 34c of the outer case 34, respectively. supported as is. Similarly, the second heater 38 is supported in a state separated from the top plate portion 32e by cantilever-like support members 42 attached to the right side wall portion 32b and the left side wall portion 34c of the inner case 32, respectively. As a result, the grill pan 30 on which food is placed is placed between the first heater 36 and the second heater 38, and these heaters 36, 38 heat the food from above and below.

In the case of this embodiment, the second heater 38 is arranged inside the inner case 32, that is, in the heating space S1. Therefore, the second heater 38 directly heats the food placed on the grill pan 30 positioned below. On the other hand, the first heater 36 is arranged outside the inner case 32 . Therefore, the first heater 36 indirectly heats the food on the grill pan 30 arranged inside the inner case 32 (that is, the heating space S1) through the inner case 32 .

In order to efficiently heat the food contained in the heating space S1 inside the inner case 32 by the first heater 36 arranged outside the inner case 32, a heater is provided between the heating space S1 and the first heater 36. The bottom plate portion 32a of the inner case 32 located there has a higher emissivity than the bottom plate portion 34a of the outer case 34 on the opposite side with the first heater 36 interposed therebetween. That is, according to Kirchhoff's law, the bottom plate portion 32a of the inner case 32 has a high emissivity and a high absorptance comparable to that of the bottom plate portion 34a of the outer case 34, while having a low reflectance. Prepare.

Specifically, in order for the first heater 36 to efficiently heat the food in the heating space S1, the infrared rays emitted from the first heater 36 are reflected by the bottom plate portion 34a of the outer case 34, The bottom plate portion 32a of the inner case 32 needs to be absorbed. Therefore, the bottom plate portion 32 a of the inner case 32 has a higher emissivity than the bottom plate portion 34 a of the outer case 34 .

Since the bottom plate portion 32a of the inner case 32 has a higher emissivity than the bottom plate portion 34a of the outer case 34, in the case of the present embodiment, the bottom plate portion 32a of the inner case 32 is an enamel-processed member (an enamel member). ). On the other hand, the bottom plate portion 34a of the outer case 34 is a member that is not hollowed.

Specifically, in the case of the present embodiment, the components of each of the inner case 32 and the outer case 34 and the front panel 28 are produced by forming (pressing, bending, etc.) a thin metal plate. . In them, the bottom plate portion 32a of the inner case 32 has a black glass layer formed over the entire surface thereof after molding. In the case of this embodiment, the bottom plate portion 32a, the right side wall portion 32b, and the left side wall portion 32c of the inner case 32 are one integrated component, and the back plate portion 32d is welded to the one component. there is A part formed by integrating the bottom plate portion 32a, the right side wall portion 32b, the left side wall portion 32c, and the back plate portion 32d is immersed in liquid black glass (glaze) and then fired.

By being enamel-processed, the bottom plate portion 32a of the inner case 32 has a black layer (black glass layer) on the surface on the first heater 36 side and the surface on the heating space S1 side. The infrared rays emitted from the first heater 36 are first absorbed by the black layer on the first heater 36 side. Next, heat is transferred from the black layer on the side of the first heater 36 whose temperature has risen due to the absorption of infrared rays to the black layer on the side of the heating space S1 through the metal plate. Then, infrared rays are radiated into the heating space S1 from the black layer on the side of the heating space S1 whose temperature has risen. The infrared rays heat the food contained in the heating space S1.

FIG. 9 shows changes in inner case bottom surface temperature and grill pan temperature when the bottom plate of the inner case is enamel-processed (Example 1) and when it is not enamel-processed (Comparative Example 1). . In FIG. 9 , the solid line and broken line indicate changes in temperature at the center of grill pan 30 . A one-dot chain line and a two-dot chain line indicate changes in the surface temperature of the bottom plate portion 32a of the inner case 32 on the side of the heating space S1.

As shown in FIG. 9, when the bottom plate portion 32a of the inner case 32 is enamel-processed (Example 1), the temperature of the grill pan 30 is higher than when it is not enamel-processed (Comparative Example 1). The surface temperature of the bottom plate portion 32a is low.

When enameled (Example 1), the bottom plate portion 32a of the inner case 32 absorbs the infrared rays from the first heater 36 with a relatively high absorptivity, and at the same time, the heating space S1 with a relatively high emissivity. radiate infrared rays to Therefore, the temperature of the grill pan 30 accommodated in the heating space S1 is relatively high, while the temperature of the bottom plate portion 32a is relatively low.

When the enamel processing is not performed (Comparative Example 1), the bottom plate portion 32a of the inner case 32 absorbs the infrared rays from the first heater 36 with a relatively low absorptance, and at the same time, heats the heating space with a relatively low emissivity. Infrared radiation is emitted to S1. That is, when the enamel processing is not performed, the bottom plate portion 32a reflects the infrared rays from the first heater 36 with a relatively high reflectance. Moreover, since the emissivity is relatively low, thermal energy that is not converted into infrared radiant energy is stored in the bottom plate portion 32a, and as a result, the temperature of the bottom plate portion 32a is relatively high.

Instead of such enamel processing, black coating may be applied to increase the emissivity of the bottom plate portion 32a of the inner case 32. FIG. Alternatively, the material of the bottom plate portion 32a of the inner case 32 may be a metal plate, and the bottom plate portion 32a may be blackened by forming an oxide film on the metal plate. Alternatively, the bottom plate portion 32a of the inner case 32 may be made of black glass. Black glass may be formed, for example, by mixing iron oxide into a molten glass material.

FIG. 10A shows the relationship between the wavelength of infrared rays and the emissivity when the metal plate is painted black (Example 2). FIG. 10B shows the relationship between the infrared wavelength and the emissivity when the metal plate is not painted black (Comparative Example 2). Here, the aluminized steel plate is painted black.

As shown in FIGS. 10A and 10B, black coating increases the emissivity. For example, in the wavelength range 3.0 to 15.07 μm of the output wavelengths of the first and second heaters 36, 38, the emissivity is 90% or more.

Thus, the bottom plate portion 32a of the inner case 32 is enamel-processed or painted black. Alternatively, the bottom plate portion 32a is black glass. That is, the surface on the side of the first heater 36 and the surface on the side of the heating space S1 are black. Thus, the first heater 36 can heat the food material in the heating space S1 from the outside in substantially the same manner as when the bottom plate portion 32a is made of a glass plate. When the base material of the bottom plate portion 32a is a metal plate, the grill chamber 20, specifically the inner case 32, can be manufactured more easily than when the bottom plate portion 32a is made of a glass plate.

When comparing the enamel processing and the black coating, the former is preferable in consideration of durability and ease of cleaning (easiness of wiping off).

Further, considering that the heating space S1 in the inner case 32 is quickly heated, the thickness of the bottom plate portion 32a of the inner case 32 is preferably small. If the wall thickness is large, the heat capacity becomes large, and it takes time until the heat distribution in the bottom plate portion 32a becomes uniform. As a result, it takes time until the amount of infrared radiation emitted from the bottom plate portion 32a to the heating space S1 stabilizes.

When the thickness of the bottom plate portion 32a of the inner case 32 is reduced, it is easily deformed, particularly thermally deformed. In order to suppress the thermal deformation, the bottom plate portion 32a is reinforced in the present embodiment.

FIG. 11 is a top view of the bottom plate portion of the inner case.

As shown in FIG. 11, the bottom plate portion 32a of the inner case 32 has a plurality of first portions extending in the front-rear direction (Y-axis direction) of the heating cooker 10 (that is, the grill chamber 20) on the surface on the heating space S1 side. ridge portion 32f. The plurality of first ridges 32f protrude toward the top plate 32e and are arranged in the left-right direction (X-axis direction) at regular intervals. Since the plurality of first ridges 32f function as reinforcing ribs, bending deformation of the bottom plate 32a in the front-rear direction is suppressed.

Further, in the case of the present embodiment, the bottom plate portion 32a of the inner case 32 has a plurality of second ridges 32g intersecting with the plurality of first ridges 32f on the surface on the heating space S1 side. The plurality of second ridges 32g are provided with a plurality of second ridges 32g extending in the left-right direction (X-axis direction) of the cooker 10 (that is, the grill chamber 20).

Furthermore, in the case of the present embodiment, relatively wide second ridges arranged near the center in the front-rear direction (Y-axis direction) of the grill chamber 20 as the plurality of second ridges 32g. 32g and relatively narrow second ridges 32g located away from the center, that is, near the food inlet/outlet 28a of the grill chamber 20 and near the back plate 32d. The bending deformation of the bottom plate portion 32a in the left-right direction is suppressed by the function of the plurality of second protrusion portions 32g having different widths as reinforcing ribs. In particular, the wide second protrusion 32g arranged in the center suppresses the bending deformation in which the central portion of the bottom plate portion 32a is largely displaced in the height direction (Z-axis direction).

The plurality of first ridges 32f are larger in number, smaller in width, and higher than the plurality of second ridges 32g (protrusion from the surface of the bottom plate 32a on the heating space S1 side). amount) is large. This is to facilitate wiping off the surface of the bottom plate portion 32a on the side of the heating space S1 in cleaning the grill chamber 20. As shown in FIG. On the other hand, if the number of the second ridges 32g is larger than that of the first ridges 32f, the width is smaller, and the height is greater, the crossing from the inner part of the heating space S toward the food loading/unloading port 28a will occur. When wiping the bottom plate portion 32a by moving the cloth, there is a possibility that the adhered matter such as oil wiped off by the cloth may get caught on the second protrusion portion 32g and remain as it is. Therefore, in consideration of cleanability, the first and second ridges 32f and 32g provided to reinforce the bottom plate 32a are larger in number, smaller in width, and higher than the latter. Better.

Also, the plurality of first and second ridges 32f and 32g do not contact the grill pan 30 as shown in FIG. Specifically, as shown in FIG. 11 , one leg portion 30 a provided at the rear portion of the grill pan 30 is one of the outermost legs in the left-right direction (X-axis direction) of the heating cooker 10 . It contacts the portion of the bottom plate portion 32a between the ridge portion 32f and the right side wall portion 32b. Also, the other leg portion 30a contacts the portion of the bottom plate portion 32a between the other first ridge portion 32f and the left side wall portion 32c. These two legs 30a form a gap between the grill pan 30 and the first and second ridges 32f and 32g.

When the grill pan 30 is drawn out of the heating space S1, the legs 30a of the grill pan 30 come into contact with stoppers 32h provided near the food inlet 28a of the bottom plate 32a. As a result, the grill pan 30 is prevented from falling off from the grill chamber 20 . When the user lifts the grill pan 30 so that the legs 30a of the grill pan 30 climb over the stoppers 32h, the entire grill pan 30 can be taken out of the heating space S1. In addition, the upper end 30b of the grill pan 30 is aligned with the right side wall portion 32b of the inner case 32 and the right side wall portion 32b of the inner case 32 so as not to tilt forward or backward until the leg portion 30a contacts the stopper portion 32h. It is guided by a guide portion 32j provided on the left side wall portion 32c (see FIG. 6).

The bottom plate portion 32a including the plurality of first and second ridge portions 32f and 32g and the stopper portion 32h can be easily manufactured by pressing a metal plate (the bottom plate portion is made of glass). (compared to being made of board)

Returning to FIG. 5, in the case of the present embodiment, the grill door 24 is configured to be movable in the front-rear direction (Y-axis direction) of the heating cooker 10 in front of the food material loading/unloading opening 28a of the main body 22. . A front end of a grill pan 30 is connected to the grill door 24 . As a result, the grill pan 30 can be drawn out of the heating space S1 of the main body 22 by moving the grill door 24 forward.

4 and 5, the grill door 24 opens and closes the food loading/unloading opening 28a of the main body 22 by moving in the front-rear direction (Y-axis direction) of the heating cooker 10. As shown in FIGS. Specifically, the rear surface of the grill door 24 (the surface on the side of the body portion 22) contacts or separates from the front surface of the body portion 22 (the front panel 28 in the case of the present embodiment), so that the grill door 24 is opens and closes the food loading/unloading port 28a.

The grill door 24 prevents the smoke and smell generated from the food during heating in the heating space S1 of the main body 22 from flowing out through the food inlet/outlet 28a. Smoke and odors generated from the food being heated are exhausted to the outside through the exhaust duct 26 and the mesh guard 14a provided on the rear side of the top plate 14. As shown in FIG. A replaceable filter 44 is attached to the exhaust duct 26 for repairing oil and odors contained in the smoke. As shown in FIG. 6, the front end of the top plate portion 32e of the inner case 32 is wider than the rear end so that the smoke generated from the food material flows from the heating space S1 toward the exhaust duct 26 (one-dot chain line). It is slanted to be in a low position. In addition, the grill door 24 is provided with a viewing window 24a so that the user can check the food being heated in the heating space S1 without opening the grill door 24. As shown in FIG.

The grill door 24 and the main body 22 are arranged so that smoke and smell do not leak through the food material loading/unloading opening 28a, that is, between the grill door 24 and the main body 22 (the front panel 28 in the case of this embodiment). A seal structure is provided between the

Specifically, in the case of the present embodiment, as shown in FIG. 7, a frame-shaped protrusion (first protrusion) 28b is provided on the front panel 28 of the main body 22 as a sealing structure. . The frame-shaped raised portion 28b is provided on the front panel 28 so as to surround the food material loading/unloading opening 28a when viewed in the opening direction (Y-axis direction) of the food material loading/unloading opening 28a. Moreover, it protrudes toward the grill door 24 and contacts the rear surface of the grill door 24 .

In the case of the present embodiment, the frame-shaped raised portion 28b is seamlessly provided on the front panel 28 and is provided without overhanging the front panel 28 . For example, the ridges 28b are made when the front panel 28 is stamped from sheet metal.

Further, in the case of the present embodiment, the frame-shaped raised portion 28b has a flat top surface 28c that functions as a sealing surface. The flat top surface 28c makes surface contact with the rear surface of the grill door 24. As shown in FIG.

FIG. 12 is a perspective view showing the rear surface of the grill door.

As shown in FIG. 12, in the case of this embodiment, the rear surface of the grill door 24 is composed of a rear panel 46 made of metal. The flat top surface 28c of the frame-shaped raised portion 28b on the front panel 28 of the main body 22 makes surface contact with the flat portion (the portion surrounded by the two-dot chain line) on the rear panel 46 of the grill door 24. As shown in FIG. In the case of the present embodiment, the portion of the rear panel 46 that contacts the raised portion 28b of the front panel 28 partially includes a concave portion such as a counterbore.

7 and the rear surface of the grill door 24 as shown in FIG. is sealed. Grill door 24 is biased toward body portion 22 to maintain that contact.

FIG. 13 is a partially enlarged view of FIG. 6 showing contact between the grille door and the front panel of the main body.

As shown in FIG. 13 , in the case of this embodiment, a bracket 48 is attached to the front end of the grill pan 30 for detachably connecting to the grill door 24 . The bracket 48 has a hook portion 48a, and an engaging hole 46a formed in the rear panel 46 of the grill door 24 is hooked on the hook portion 48a (see FIG. 12). Further, the grill door 24 is provided with a leaf spring 50 whose free end contacts the grill pan 30 from below. The restoring force of the plate spring 50 urges the upper portion of the grill door 24 toward the front panel 28 of the main body 22 with the engagement point between the hook portion 48a and the engagement hole 46a as a fulcrum.

Further, in the case of this embodiment, as shown in FIG. 12, a tongue portion 24b projecting toward the main body portion 22 is provided at the lower portion of the grill door 24. As shown in FIG. The tongue portion 24b is inserted into an engagement hole 28d provided in the front panel 28 of the body portion 22 (see FIG. 7). As shown in FIG. 13, the tongue portion 24b is provided with an engaging claw 24c, and the engaging claw 24c is biased toward the main body portion 22 by a leaf spring 52. As shown in FIG. As a result, the lower portion of the grille door 24 is biased toward the front panel 28 of the body portion 22 .

By using such a frame-shaped raised portion 28b of the body portion 22, cleaning of the grill chamber becomes easier than in the case of using a frame-shaped sealing member made of an elastic material such as silicon. For example, when the seal member is attached to the main body, it is necessary to remove the seal member from the main body in order to wipe off oil adhering to the seal member or oil that has entered between the seal member and the main body. On the other hand, in the case of the raised portion 28b, there is no gap between the raised portion 28b and the main body portion 22 (front panel 28), and there is no overhang on the main body portion 22, so oil or the like does not adhere. You can easily wipe off your clothes.

In the case of this embodiment, as shown in FIG. The non-contact portion 28e has a raised height lower than that of the non-contact portion 28e. That is, the non-contact portion 28e does not contact the rear panel 46 of the grill door 24, as shown in FIG.

As shown in FIG. 13, when the grill door 24 is in a closed state, outside air flows into the main body through the intake channel FC formed between the non-contact portion 28e and the grill door 24 (rear side panel 46). 22 is taken into the heating space S1.

Specifically, as shown in FIG. 6, when food is heated in the heating space S1 of the main body 22, the heated air (and smoke) in the heating space S1 flows toward the exhaust duct 26 ( dash-dot line). Attracted by the flow of the air, outside air flows into the heating space S1 through the intake channel FC formed between the non-contact portion 28e and the grill door 24. As shown in FIG. As a result, an air flow toward the exhaust duct 26 is generated in the area of the heating space S<b>1 near the grill door 24 . As a result, leakage of smoke and odors through a space between the raised portion 28b other than the non-contact portion 28e and the grill door 24 is suppressed.

If such a non-contact portion 28e is not provided on the frame-shaped raised portion 28b, no air flow toward the exhaust duct 26 occurs in the area of the heating space S1 near the grill door 24, and the pressure in that area increases. do. The pressure may cause smoke and odors to leak through between the raised portion 28b and the grill door 24.

Further, as shown in FIG. 7, in the case of the present embodiment, the non-contact portion 28e is positioned below the food loading/unloading opening 28a. As a result, the leakage of smoke and odor through the intake channel FC formed between the non-contact portion 28e and the grill door 24 is suppressed.

Further, as shown in FIG. 7, the non-contact portion 28e is provided on a frame-shaped raised portion 28b so as to be positioned in the center of the food material loading/unloading opening 28a in the left-right direction (X-axis direction). Therefore, the outside air that has passed through the intake channel FC between the non-contact portion 28e and the grill door 24 flows into the central region of the heating space S1. As a result, changes in the temperature gradient within the heating space S1 due to the inflow of outside air are suppressed, and uneven heating of the food is suppressed. That is, since the central area of the heating space S1 has a higher temperature than the other areas and does not easily drop, the temperature does not change significantly even when the cold outside air flows in. As shown in FIG.

In this regard, in the case of the present embodiment, the non-contact portion 28e is preferably formed into a frame-like raised portion 28b by gradually decreasing the raised height, as shown in FIG. . As a result, a large amount of outside air flows into the center of the heating space S1 in the left-right direction (X-axis direction), and a small amount of outside air flows into both sides thereof. As a result, changes in the temperature gradient within the heating space S1 due to the inflow of outside air are further suppressed, and uneven heating of the food is further suppressed.

Further, as shown in FIG. 13, in the cross-sectional shape of the non-contact portion 28e, the outer portion has a slope shape. As a result, outside air can smoothly flow into the intake channel FC formed between the non-contact portion 28e and the grill door 24 (flow path resistance of outside air is reduced).

Furthermore, in the case of the present embodiment, in order to further prevent smoke and odors from leaking from between the grill door 24 and the frame-like raised portion 28b of the main body 22, a gap between the non-contact portion 28e and the grill door 24 is The heating cooker 10 is configured to forcibly send outside air toward the formed flow path FC.

In the case of the present embodiment, as shown in FIG. 3, the cooking device 10 has a fan 54 that draws outside air into the housing 12 to cool the inside of the housing 12 . A flow path from the fan 54 to the non-contact portion 28e of the raised portion 28b of the main body portion 22 of the grill chamber 20 is provided in the housing 12. As shown in FIG.

Specifically, as shown in FIG. 3 , the fan 54 is arranged on the front side of the right space 12 b of the housing 12 . As the fan 54 rotates, outside air is sucked into the housing 12 through the suction port 12 d provided at the lower front surface of the housing 12 and taken into the fan 54 . The outside air taken in by the fan 54 is blown rearward to cool a control board (not shown) arranged behind the fan 54 . After that, outside air flows into the left space 12a in which the grill chamber 20 is arranged through the communication hole 12e formed in the partition wall 12c (one-dot chain line).

As shown in FIG. 6 , the outside air that has flowed into the left space 12a moves forward (the grill door 24 ) (a dashed line).

Then, as shown in FIG. 13, outside air passes through the engagement hole 28d of the front panel 28 of the main body 22 and reaches the intake channel FC formed between the non-contact portion 28e and the grill door 24. .

By forcibly feeding outside air into the intake channel FC, leakage of smoke and odors from between the grille door 24 and the frame-like protrusion 28b of the main body 22 is further suppressed. In addition, leakage of smoke and odor through the intake channel FC is further suppressed.

Furthermore, in the case of the present embodiment, in order to further suppress leakage of smoke and odors from between the grill door 24 and the frame-like raised portion 28b of the main body portion 22, the frame is provided as shown in FIG. A ridge (second ridge) 46b is provided on the rear panel 46 of the grille door 24 which at least partially surrounds the shaped ridge 28b.

In the case of this embodiment, the raised portion 46b is bar-shaped as shown in FIG. Further, as shown in FIG. 13, the raised portion 46b is positioned below the frame-shaped raised portion 28b of the main body portion 22 when the grill door 24 is closed.

As shown in FIG. 13, raised portion 46b does not contact body portion 22 (its front panel 28). The raised portion 46b does not seal the space between the main body 22 and the grill door 24, but reduces flow resistance against smoke leaking from between the grill door 24 and the frame-shaped raised portion 28b of the main body 22. It is an increasing obstacle. In the case of the present embodiment, the raised portion 46b makes it difficult for smoke and smell to leak downward from between the body portion 22 and the grill door 24. As shown in FIG.

The reason why the raised portion 46b of the grill door 24 does not come into contact with the main body portion 22 is to bring the frame-shaped raised portion 28b of the main body portion 22 into contact with the grill door 24 without fail. This is because if the projection 46b is designed to contact the main body 22, there is a possibility that the entire frame-shaped projection 28b of the main body 22 cannot contact the grill door 24 due to manufacturing variations.

Further, the raised portion 46b of the grill door 24 may have a frame shape surrounding the entire frame-shaped raised portion 28b of the main body portion 22 .

Furthermore, when the non-contact portion 28e is provided on the frame-shaped raised portion 28b as in the present embodiment, as shown in FIG. Preferably, a reduced raised height portion 46c is provided. Through this portion 46c, outside air can smoothly flow into the intake channel FC formed between the non-contact portion 28e and the grill door 24. As shown in FIG.

According to the present embodiment as described above, it is possible to provide a heating cooker in which the inside of the heating space can be easily cleaned. Further, it is possible to provide a cooker capable of suppressing a decrease in thermal efficiency even when glass having a high transmittance is not used for the bottom plate portion. If the base material of the bottom plate portion is a glass plate, the glass plate needs to be joined to the metal housing via a sealing material, which complicates the manufacturing process. However, when the bottom plate portion is made of a metal plate, the bottom plate portion is formed integrally with other portions of the inner case, which facilitates manufacturing.

Although the present disclosure has been described above with reference to the above-described embodiments, the embodiments of the present disclosure are not limited thereto.

For example, in the above embodiment, the first heater 36 arranged outside the inner case 32 is arranged below the bottom plate portion 32a of the inner case 32, as shown in FIG. However, embodiments of the present invention are not limited to this. If the first heater is arranged outside the inner case, it may be arranged, for example, above the top plate of the inner case, beside the right side wall or the left side wall.

As described above, the above embodiment has been described as an illustration of the technique of the present invention. To that end, the accompanying drawings and detailed description have been provided.

Therefore, among the components described in the attached drawings and detailed description, there are not only components essential for solving the problem, but also components not essential for solving the problem in order to illustrate the technology. can also be included. Therefore, it should not be immediately recognized that those non-essential components are essential just because they are described in the attached drawings and detailed description.

Also, the above-described embodiments are intended to illustrate the technology of the present invention, and various modifications, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

INDUSTRIAL APPLICABILITY The present invention is applicable to a heating cooker provided with a grill chamber that accommodates and heats foodstuffs.

10 cooking device 20 grill 32 inner case 32a portion of inner case (bottom plate portion)
34 outer case 34a outer case portion (bottom plate portion)
36 first heater

Claims (13)

A heating cooker having a grill chamber,
The grill store
a grill plate on which ingredients are placed;
an inner case comprising a heating space in which the grill pan is accommodated and heated;
an outer case that houses the inner case;
a first heater disposed in a space between the inner case and the outer case;
The inner case includes a bottom plate portion disposed between the heating space and the first heater , and a wall portion erected upward from the bottom plate portion and integrally formed with the bottom plate portion. including
A gap is provided between the bottom plate portion and the bottom surface of the grill pan,
In the range of the output wavelength of the first heater, both surfaces of the portion of the inner case located between the heating space and the first heater are opposite to the outer case with the first heater interposed therebetween. A heating cooker having a higher emissivity than the portion of
2. The heating cooker according to claim 1, wherein said first heater is an infrared heater that emits infrared rays with a wavelength range of 3.0 to 15.07 μm.
When the first heater emits infrared rays with a wavelength of 3.0 to 15.07 μm, the emissivity of the portion of the inner case between the heating space and the first heater is 85% or more. The heating cooker according to claim 2, wherein
4. The method according to any one of claims 1 to 3, wherein a surface on the side of the heating space and a surface on the side of the first heater in the portion of the inner case between the heating space and the first heater are black. The heating cooker described.
5. The heating cooker according to claim 4, wherein the portion of said inner case between said heating space and said first heater is an enamel member formed by covering a metal member with a black glass layer.
The heating cooker according to any one of claims 1 to 5, further comprising a second heater provided near the ceiling of said heating space.
The inner case has a food material loading/unloading opening communicating with the heating space on the front side,
The heating cooker according to any one of claims 1 to 6, wherein the bottom plate portion of the inner case includes a plurality of first ridges extending in the front-rear direction of the heating space.
8. The heat cooking according to claim 7, wherein the bottom plate portion of the inner case includes a plurality of second ridges extending in the left-right direction of the heating space and intersecting the plurality of first ridges. vessel.
The heating cooker according to claim 8, wherein the width of the first ridge is smaller than the width of the second ridge.
The heating cooker according to claim 8 or 9, wherein the number of said first ridges is greater than the number of said second ridges.
The heating cooker according to any one of claims 8 to 10, wherein the height of the first ridge is greater than the height of the second ridge.
12. The width of the second ridge near the center of the heating space in the front-rear direction is larger than the width of the second ridge far from the center. heating cooker.
13. The heating cooker according to any one of claims 1 to 12, wherein the inner case has a stopper portion that protrudes from the bottom plate portion and comes into contact with the grill pan that is drawn out of the heating space.