JPH11235280A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a toaster oven which can improve the workability of a reflecting board partitioning a cooking chamber and can improve the assemble- workability and cleanability of the cooking chamber in addition to reducing the roasting irregularity of a cooked food. SOLUTION: The toaster oven is provided with a front door 7 opening/closing an aperture 2a on the front surface of the cooking chamber 2 provided with a see-through glass 7a ad divided by the reflecting board 6, two upper electric heaters 12, 13 arranged in the direction of the depth of the cooking chamber and one lower electric heater 14 to heat-cook a food to be cooked arranged between these upper/lower heaters. In this case, the calorific value of the heater 12 on the side of the front door is made larger than the calorific value of the heater 13 arranged on the depth side of the cooking chamber. Thereby, a reflecting projection part projecting between both of the front and rear heaters 12 and 13 is no provided at the board 6 but calorie escaping from the front door 7 is compensated to equalized a heating temperature operating to each part of the food to be cooked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker such as an oven toaster for baking and cooking an object to be cooked such as bread and pizza pie with an electric heater.

[0002]

2. Description of the Related Art In an oven toaster, an object to be cooked such as bread is placed on a grill provided in a cooking chamber having an opening on the front side, and the opening is closed with a front door having a transparent glass. An electric heater including a quartz tube heater and the like disposed above and below the grille, respectively, generates heat to heat the object to be cooked. In this type of oven toaster, electric heaters having the same heat generation are used as the electric heaters disposed above and below the grill.

The number of upper and lower electric heaters provided in a general oven toaster is one. However, recently, the depth of a cooking chamber has been increased, and among the electric heaters used, for example, an upper electric heater has been used. Are provided side by side in the depth direction of the cooking chamber. In such a configuration, in the current situation where semi-cooked foods such as frozen pizza pie, which can be eaten just by baking, are remarkably widespread, a relatively large semi-cooked food is divided and re-placed on a grill without purchasing. Suitable for cooking as it is.

In such an oven toaster, the electric heaters having the same heating value are used for all the electric heaters. However, in order to uniformly burn the surface of the object to be cooked, a reflection chamber which partitions the cooking chamber is used. A structure is employed in which a reflective convex portion having a substantially V-shaped cross section and projecting is provided between two upper electric heaters on the upper portion of the plate.

[0005] According to this configuration, the heat rays directed obliquely upward and rearward from the upper electric heater disposed on the front door side are reflected to the front side of the grill by the oblique front reflection surface of the reflection convex portion. While preventing the back side of the cooking chamber from being heated by this heat ray, the front side of the grill can be heated, and the heat ray heading obliquely upward and forward from the upper electric heater arranged at the back side of the cooking chamber is convexly projected. The light can be reflected to the middle portion in the depth direction of the grill by the oblique rear reflecting surface of the portion. Therefore, since the front door has the see-through glass, it is possible to compensate for the fact that heat easily escapes therefrom, and it is possible to reduce uneven grilling on the upper surface of the object placed on the grill.

[0006]

However, in the configuration in which the reflecting plate is provided with the reflecting protrusions as described above in order to reduce unevenness in the burning, it is necessary to bend the reflecting protrusions on the reflecting plate, and the reflecting plate is bent. In addition to the poor workability of the plate and the complicated shape of the reflection plate, it is difficult to handle, and there is a problem that the workability of assembling the cooking chamber and the cleaning property when wiping and cleaning the interior of the cooking chamber are poor. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce not only the unevenness of the objects to be cooked, but also to improve the workability of the reflector for partitioning the cooking chamber, assembling work of the cooking chamber and the cleaning property. It is to obtain a cooking device which can improve the heating.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a cooker body having a cooking chamber defined by a reflector for reflecting heat rays and having a front opening, and a transparent glass having a transparent glass before opening and closing the opening. A door, and support means provided in the cooking chamber,
A grille provided in the cooking chamber supported by the support means, an upper electric heater extending in the width direction of the cooking chamber and disposed above the grille, and a grid in the cooking chamber in the width direction. And a lower electric heater extending below the grill, and having a lower electric heater.

[0009] In order to solve the above-mentioned problem, the invention of claim 1 provides at least one of the upper electric heater and the lower electric heater arranged in a depth direction of the cooking chamber, and a plurality of these electric heaters are provided. The heat generation amount of the electric heater on the front door side of the heater is made larger than the heat generation amount of the other electric heaters disposed on the back side of the electric heater.

According to the first aspect of the present invention, among the plurality of electric heaters arranged side by side in the depth direction of the cooking chamber, the amount of heat generated by the electric heater on the front door side is large. To compensate for the amount of heat escaping outside the cooking chamber. Thereby, the heating temperature of each part of the object to be cooked on the grill which is heated by the plurality of electric heaters arranged in the depth direction can be made equal, and the reflection convex portion is formed on the reflection plate that partitions the cooking chamber. It is not necessary to take measures to equalize the heating temperature of each part of the object to be cooked on the grill by utilizing the heat ray reflection there, and the shape of the reflector can be simplified.

In carrying out the invention of claim 1,
As in the invention of claim 2, a plurality of the upper electric heaters are provided, and the amount of heat generated by the upper electric heater on the front door side in the upper electric heater is set to another upper electric heater disposed on the back side of the upper electric heater. It is good to make it larger than the calorific value of a heater.
In general, the separation distance of the upper electric heater from the grill is
Since the distance between the lower electric heater and the grill is larger than the distance between the grill and the upper electric heater, the space between the grill and the upper electric heater is largely opposed to the see-through glass of the front door. But easier to escape to the outside. Therefore,
According to the invention of claim 2, since the amount of heat escaping to the outside of the cooking chamber is easily supplemented as described above, the problem of the present invention is easily solved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view showing the structure of the oven toaster according to the first embodiment in an open state, and FIG. 2 is a vertical sectional side view showing the structure of the toaster in a closed state. The cooking device main body denoted by reference numeral 1 includes a cooking chamber 2 and an outer housing 3 that covers the outside of the cooking chamber. The cooking chamber 2 has a bottom plate 4
A pair of left and right reflective side walls (only one is shown) 5 are mounted upright, and a reflective plate 6 is mounted over the upper and rear portions of the side walls 5, and the front surface is opened as shown in FIG. ing. An object to be cooked can be put in and out of the cooking chamber 2 through the opening 2a. The bottom plate 4, the reflective side wall 5, and the reflective plate 6 are all made of metal. In particular, the reflective side wall 5 and the reflective plate 6 are provided with the reflective surface that reflects heat rays facing the cooking chamber 2. The outer casing 3 made of metal is provided with a heat insulating air layer of a required size between the outer casing 3 and the outer surface of the cooking chamber 2 excluding the bottom plate 4.

The reflecting plate 6 partitioning the upper part and the rear part of the cooking chamber 2 does not have a projecting part projecting between two electric heaters, which will be described later, which are juxtaposed in the depth direction of the cooking chamber 2. As shown in FIG. 2, except for the protrusions 6a and 6b into the cooking chamber 2 at the front end and the lower end, they are formed so as to have a smooth curved shape as a whole without irregularities therebetween. ing. In the first embodiment, the number of components is reduced by using the reflecting plate 6 as a single plate, and there is no stepped portion or the like that interferes with cleaning. However, in the present invention, a plurality of reflecting plates 6 are provided. It may be formed by combining plates.

A front door 7 for opening and closing the opening 2a of the cooking chamber 2 is rotatably mounted on the front surface of the cooking device main body 1 through pivoting means (not shown) so as to open to the front. The front door 7 has a heat-resistant transparent glass 7b attached to a metal door frame 7a, and a pair of hooks 8 on a lower inner surface of the door frame 7a.
Are formed to protrude. Further, a heat-resistant handle 7c for opening and closing operation is attached to an upper outer surface of the front door 7. When the front door 7 closes the opening 2a, the cooking device main body 1 is closed.
Is formed so that the inside of the cooking chamber 2 can be visually recognized through the see-through glass 7b.

On the pair of left and right reflective side walls 5 partitioning the cooking chamber 2, arc-shaped guide holes 9 (only one is shown) projecting diagonally forward and upward are formed to face each other. The cooking chamber 2 is provided with a support rod 10 that can move along the guide holes 9 with both ends inserted through the guide holes 9. The support wall 9 and the support rod 10 provided between the two reflective side walls 5 constitute support means.

On the support bar 10, a metal grill 11 on which an object A to be cooked such as a bread is placed is supported. The left and right ends of the front frame 11a of the grill 11 are engaged with the hooks 8, respectively. Therefore, when the front door 7 is opened, the grill 11 moved in the front-rear direction in conjunction with the opening and closing of the front door 7 is drawn out to the front side of the cooking chamber 2 as shown in FIG. Is closed, it is housed in the cooking chamber 2 as shown in FIG.

In the cooking chamber 2 above the grill 11,
First and second rod-shaped upper electric heaters 12 and 13 extending in the width direction of the chamber 2 are arranged in parallel in the depth direction of the cooking chamber 2. These electric heaters 12, 1
Both ends in the longitudinal direction of 3 penetrate the reflecting side walls 5 and are supported on these side walls 5 via insulators. Grill 11
A lower electric heater 14 in the form of, for example, a bar is disposed between the upper electric heaters 12 and 13 in the cooking chamber 2 below and in parallel with the upper electric heaters 12 and 13. The electric heater 14 also has both ends in the longitudinal direction penetrating through the reflective side walls 5 and is supported on these side walls 5 via insulators.

As described above, the two upper electric heaters 12, 1
3, the depth of the cooking chamber 2 and the grill 11 is wider than that of an oven toaster having one upper electric heater. Thereby, a relatively large semi-cooked food or the like can be placed on the grill 11 and cooked without being divided.

Each of the electric heaters 12 to 14 is wound with an electric heating wire for generating resistance heat in a coil shape, inserted through a transparent glass pipe which is transparent to heat rays, and provided with insulators at both ends of the pipe. An attached structure, for example, a quartz tube heater is used. The first upper electric heater 12 disposed on the front door 7 side of the first and second upper electric heaters 12 and 13 has a second upper electric heater disposed on the far side of the cooking chamber 2. A heater that generates heat with a higher output than the heater 13 is used. That is, the power supplied to the first upper electric heater 12 (wattage) is higher than the power supplied to the second upper electric heater 13 (wattage). Therefore, the intensity of the heat ray radiated to the surroundings by the first upper electric heater 12 (the image of the intensity of the heat ray radiated downward is shown by a two-dot chain line in FIG. 2) is determined by the second upper electric heater 13. It is larger than the heat rays radiated to the surroundings (an image of the intensity of the heat rays radiated downward is shown by a two-dot chain line in FIG. 2). That is, the amount of radiant heat of the first upper electric heater 12 is larger than the amount of radiant heat of the second upper electric heater 13, and conversely, the second upper electric heater on the back side compared to the amount of heat generated by the first upper electric heater 12. Heater 13
Calorific value is reduced.

The height positions of the two upper electric heaters 12, 13 arranged in the depth direction of the cooking chamber 2 are, for example, the same, but may be different. Then, both upper electric heaters 12, 1 having the same height position in the first embodiment.
The distance between 3 and the grill 11 is set larger than the distance between the lower electric heater 14 and the grill 11,
Thereby, objects to be cooked having various thicknesses can be placed on the grill 11. Also, when the front door 7 is closed,
The facing area of the transparent glass 7b with respect to the cooking chamber upper space between the upper electric heaters 12, 13 and the grill 11 is:
The area of the see-through glass 7b that is opposed to the lower space of the cooking chamber between the lower electric heater 14 and the grill 11 is larger than the area.

In FIG. 2, reference numeral 15 denotes a metal waste tray provided at the bottom of the cooking device main body 1 so as to be able to be taken in and out from the front side thereof. As shown in FIG. 1, the cooker main body 1 is provided with a control chamber (not shown) adjacent to one side of the cooking chamber 2, in which electric power supplied to each of the electric heaters 12 to 14 and its electric power are supplied. Control means for controlling the supply time (cooking time) and the like are accommodated. An operation panel 16, which is the front of the control room, has a thermal power control knob 17, which specifies the amount of power to be supplied,
And a timer knob 18 for designating the cooking time. In FIG. 1, reference numeral 19 denotes a power cord.

The oven toaster having the above configuration is used by supplying electric power to the three electric heaters 12 to 13 to generate heat. At this time, since the back side of the cooking chamber 2 is closed, heat tends to rise and the temperature easily rises, whereas the front part of the cooking chamber 2 has the opening 2a and closes the opening 2a. Since the heat easily escapes through the transparent glass 7b of the front door 7, the temperature tends to decrease.

However, the electric power supplied to the first upper electric heater 12 on the front side arranged on the side of the opening 2a is higher than that of the other electric heaters 13, so that the amount of heat generated by this heater 12 is farther from the rear side. Is larger than the other heaters 13 arranged in the other. As described above, since the first upper electric heater 12 has a high output (a larger amount of heat generation than other heaters), the main heating is directly performed by the heater 12 toward the grill 11, and the first upper electric heater 12 is reflected by the ceiling portion of the reflection plate 6. The auxiliary heating by the heat rays directed toward the grill net 11 can mainly increase the temperature on the front side of the cooking chamber 2 to compensate for the amount of heat that escapes to the outside of the cooking chamber 2 through the front door 7.

Therefore, despite the fact that the depth of the cooking chamber 2 is large, the cover on the grill 11 heated by the two upper electric heaters 12 and 13 arranged in the depth direction of the cooking chamber 2 is provided. The heating temperature of each part of the food can be made equal. In other words, since the heating temperature can be made uniform over the entire depth direction of the cooking chamber 2, it is possible to minimize the possibility of uneven grilling due to the difference in the degree of grilling of the cooking object between the near side and the back side of the cooking chamber 2 and clean The food can be baked.

In particular, the upper space of the cooking chamber above the grill 11 has a larger area facing the transparent glass 7b than the lower space of the cooking chamber below the grill 11, so that the upper area of the grill 11 is Through the transparent glass 7b from the space between the electric heaters 12 and 13, the heat of the front part of the cooking chamber 2 can be more easily dissipated through the transparent glass 7b. Since the temperature can be compensated by the rise in the temperature in the front part of the chamber 2, it is possible to minimize the occurrence of uneven grilling of the object to be cooked and to bake the object to be cooked neatly.

In order to reduce the unevenness in the grilling as described above, a method is used in which the heating value of the pair of upper electric heaters 12 and 13 arranged on one side of the grill 11 is made different from each other. Cooking room 2 as explained in the technique of
It is not necessary to form a reflection convex portion on the reflection plate 6 that partitions the area and take measures to make the heating temperature of each portion of the object to be cooked on the grill 11 using the heat ray reflection there.

Therefore, the shape of the reflector 6 can be simplified as shown in FIG. 2, so that the reflector 6 can be processed easily and can be obtained at low cost.
Is installed so as to extend over the pair of left and right reflecting side walls 5, and the handling of the reflecting plate 6 at the time of assembling the cooking chamber 2 becomes easy, so that the assembling workability of the cooking chamber 2 can be improved. In addition, as described above, since the shape of the reflecting plate 6 is simple because there is no reflecting convex portion, when the cooking chamber 2 is cleaned by wiping the inner surface of the reflecting plate 6, a part of the reflecting plate 6 is cleaned. The cloth or the like does not get caught or a part of the reflection plate 6 does not get in the way, and it is easy to wipe and clean all corners, so that the cleaning property can be improved.

FIG. 3 shows a second embodiment of the present invention. This embodiment has basically the same configuration as the first embodiment, and the same components as those of the first embodiment will be described.
The same reference numerals as those of the embodiment described above denote the same parts, and a description of the configuration and operation will be omitted. The difference between the second embodiment and the first embodiment is that two lower electric heaters are provided similarly to the upper electric heater.

That is, in the second embodiment, the two lower electric heaters 14a and 14b
Are arranged in the cooking chamber 2 in parallel with each other in the depth direction, and the first lower electric heater 14a on the front door 7 side thereof is provided with a second lower electric heater 14a on the rear side.
The heat value is larger than b. The configuration other than this point is the same as that of the first embodiment, including portions not shown in FIG.

In the second embodiment, heating and cooking on the upper surface of the object to be cooked on the grill net 11 are performed in the same manner as described in the first embodiment. In the structure for heating the object to be cooked from below, the amount of heat escaping from the front door 7 side is supplemented by the high output of the first lower electric heater 14a in the same manner as in the first embodiment, so as to cover the entire depth of the cooking chamber 2 in the depth direction. The heating temperature can be made uniform over a period of time. Accordingly, it is possible to minimize the occurrence of uneven grilling on both the upper and lower surfaces of the object to be cooked, and to clean both sides of the object to be cooked, thereby solving the problem of the present invention.

The present invention is not limited to the above embodiments. For example, when another intermediate electric heater is disposed between the electric heater on the door side and the electric heater on the back side of the cooking chamber, the amount of heat generated by this heater can be minimized. In addition, the present invention provides an oven toaster having not only one grill net but two or more grill nets arranged at different heights in a cooking chamber, and an electric heater provided on each of the upper and lower sides of each grill net. The present invention is not limited to the oven toaster, but may be applied to any apparatus that heats and cooks the object on the grill by heating the electric heater from above and below.

[0033]

The present invention is embodied in the form described above and has the following effects.

According to the first and second aspects of the present invention, the difference in the amount of heat generated by the plurality of electric heaters arranged in the depth direction of the cooking chamber compensates for the amount of heat escaping outside the cooking chamber through the front door portion. Since the heating temperature of each part of the object to be cooked on the grille heated by the plurality of electric heaters can be made equal, uneven grilling of the object to be cooked can be reduced. As described above, since unevenness in grilling is reduced due to the difference in the amount of heat generated by the electric heater, a reflective projection is formed on a reflector that divides the cooking chamber as in the related art, and a grille is formed using heat ray reflection there. Since the shape of the reflector can be simplified without the need for a configuration for equalizing the heating temperature of each part of the object to be cooked, the workability of the reflector that partitions the cooking chamber can be improved, and the assembling workability of the cooking chamber can be improved. And the cleaning property can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an oven toaster according to a first embodiment of the present invention in an open state.

FIG. 2 is a longitudinal sectional side view showing the configuration of the oven toaster shown in FIG. 1 in a closed state.

FIG. 3 is a vertical sectional side view showing a configuration of an oven toaster according to a second embodiment of the present invention in a closed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cooker main body, 2 ... Cooking room, 2a ... Opening of cooking room, 6 ... Reflector plate, 7 ... Front door, 7b ... Transparent glass, 9 ... Guide hole (support means), 10 ... Support rod (support means) Reference numeral 11: grid, 12: first upper electric heater, 13: second upper electric heater, 14: lower electric heater, 14a: first lower electric heater, 14b: second lower electric heater.

Claims (2)

[Claims] 1. A cooking device main body having a cooking chamber partitioned by a reflection plate for reflecting heat rays and having an open front surface, a front door having transparent glass for opening and closing the opening, and provided in the cooking chamber. A supporting means provided, a grille provided in the cooking chamber supported by the supporting means, an upper electric heater extending in a width direction of the cooking chamber and disposed above the grille, and A lower electric heater extending in the width direction of the chamber and disposed below the grill, wherein at least one of the upper electric heater and the lower electric heater has a depth of the cooking chamber. A plurality of heaters are arranged side by side in the direction, and the calorific value of the electric heater on the front door side of the plurality of electric heaters is set to be larger than the calorific value of other electric heaters arranged on the back side of the electric heater. Features Heating cooker. 2. A method according to claim 1, further comprising: providing a plurality of said upper electric heaters;
The heating cooker according to claim 1, wherein the calorific value of the other upper electric heater disposed on the back side of the upper electric heater is larger than that of the other upper electric heater.