JPH10192155A - Cooker - Google Patents

Abstract

(57) [Summary] [Problem] To provide a heating cooker that has good heating efficiency and energy saving and can cook in a short time. SOLUTION: An opening 3 is provided on the front side and a heating chamber 2 is provided inside.
, A door 8 openably and closably attached to the opening 3 of the main body 1, heating means disposed on the upper and lower portions of the heating chamber 2, and detachably housed in the heating chamber 2. And a mounting table 25 for the cooked food 17, and the heating means is a pair of heating elements 20 and 21 facing each other.
21 is provided above and below the heating chamber 2 and on the rear side, and the mounting table 25 is disposed between the pair of heating elements 20 and 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker that heats and cooks food in a heating cabinet.

[0002]

2. Description of the Related Art FIG. 6 is a longitudinal sectional view showing a configuration of a conventional cooking device, and FIG. 7 is a side view and a plan view showing a part of a bottom heater of the conventional cooking device in a cross section. In the figure, reference numeral 1 denotes a box-shaped heating cooker main body formed of a coated steel plate having an opening 3 on the front side, and 2 denotes a heating chamber formed in the main body 1, for example, a bottom plate 4 made of stainless steel, and a spine. It is composed of a plate 5, a side plate 6, and a top plate 7, and the front side is open. Openings 7a and 7b whose length directions are substantially parallel to the width direction of the main body 1 are provided on the front side and the back side of the top plate 7, respectively. Reference numeral 8 denotes a door which closes the opening 3 of the main body 1 and the opening of the heating chamber 2 and has a glass window 9 which is attached to a front side of the main body 1 by a hinge (not shown) so as to be openable and closable. I have.

[0003] Reference numeral 10 denotes a planar bottom heater having a calorific value of, for example, 600 W, which is in contact with the bottom surface of the bottom plate 4 of the heating chamber 2, and as shown in FIG. And an insulating plate 10b made of, for example, mica that sandwiches and insulates the heater wire 10a.
The heater wires 10a are arranged on the insulating plate 10b at a uniform pitch. Reference numeral 11 denotes a tubular upper front heater which is disposed above the top plate 7 of the heating chamber 2 and is provided in the front opening 7a of the top plate 7;
Is an opening 7b on the back side of the top plate 7 above the top plate 7 of the heating chamber 2.
The upper heaters are disposed in the upper and lower portions of the heaters.
Reference numeral 2 includes, for example, a resistance pipe built in a ceramic pipe, and their calorific value is 360 W. 13,
Numeral 14 denotes reflectors provided on the upper surface of the top plate 7 so as to cover both the openings 7a and 7b of the top plate 7 and surround the upper front heater 11 and the upper rear heater 12, respectively, and heat the heat of both heaters 11 and 12. The light is reflected below the storage 2. Reference numeral 15 denotes a pair of shelf supports projecting from the side plate 6 of the heating chamber 2, and 16 denotes a shelf receiver 1.
A cooking net 17 which is a mounting table detachably mounted on 5 is a cooking object such as a bread mounted on the cooking net 16.

[0004] When cooking the food 17 in the heating cooker configured as described above, first, the door 8 is opened and the cooking net 16 on which the food 17 is placed is placed on the shelf receiver 15. Then, the door 8 is closed. Then, when a power supply (not shown) is turned on, the bottom heater 10, the upper front heater 11, and the upper rear heater 12 are energized to generate heat. Bottom heater 1
The heat of 0 heats the bottom plate 4 of the heating chamber 2, and the heat of the bottom plate 4 is supplied to the upper portion as radiant heat. Also, the upper front heater 1
A part of the heat of the first and upper rear heaters 12 is directly radiated downward as radiant heat to heat the food 17, and the other heat is reflected by the reflection plates 13 and 14 and radiated to the heating chamber 2 as the reflected heat. Then, the food 17 is heated and the inside of the heating chamber 2 is uniformly heated. Then, the food 17 is cooked by direct heating by radiant heat from the bottom heater 10, the upper front heater 11, and the upper rear heater 12 and indirect heating by heated air heat in the heating chamber 2.

FIG. 8 is a longitudinal sectional view showing the structure of another conventional cooking device.
A planar bottom heater 18 and a planar heater 19 are in contact with the bottom surface of the top plate 7 and the top surface of the top plate 7, respectively. The bottom heater 18 and the top heater 19 are configured in the same manner as the bottom heater 10 shown in FIG. 7, and generate 600 W of heat. The cooking of the food 17 in the heating cooker configured as described above is performed in substantially the same manner as in the case of the heating cooker shown in FIG.

[0006]

In any of the above-mentioned conventional cooking devices, the entire inside of the heating chamber 2 is uniformly heated by the heat of the upper front heater 11, the upper rear heater 12, or the upper heater 19 in any case. 6 and FIG. 8, the amount of heat irradiation on the food 17 is reduced, as shown by the dashed-dotted arrow in FIG. 6 and FIG. Since the upper front heater 11 and the upper heater 19 are arranged, the heat of the upper front heater 11 and the upper heater 19 is radiated to the outside from the glass window 9 of the door 8 having a high thermal conductivity, and the heat is wastefully consumed. Had been done. As a result, there has been a problem that the heating efficiency decreases and the cooking time increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a heating cooker which can save energy and can cook in a short time with good heating efficiency. It is.

[0008]

A heating cooker according to the present invention has a main body having an opening on the front side and a heating chamber formed therein, and a door which is openably and closably attached to the opening of the main body. And, heating means disposed on the upper and lower portions of the heating cabinet, and a mounting table of the food removably accommodated in the heating cabinet, the heating means as a pair of opposed heating elements,
The pair of heating elements are provided on the upper and lower sides of the heating chamber and on the back side, and the mounting table is arranged between the pair of heating elements.

Further, in the heating cooker according to the present invention, a pair of heating elements opposed to each other are constituted by a tubular upper heater and a lower heater, and the upper heater and the lower heater are provided outside the heating cabinet and the top plate of the heating cabinet. And an opening provided on the back side of the bottom plate.

Further, in the heating cooker according to the present invention, a pair of heating elements opposed to each other are constituted by a planar upper heater and a lower heater in which approximately one-half of a depth direction thereof is formed in a high heat generating portion. The high heat generating portions of the upper heater and the lower heater are in contact with each other so as to be located outside the top plate and the bottom plate of the heating chamber and on the back side of the top plate and the bottom plate.

Further, in the heating cooker according to the present invention, a pair of heating elements opposed to each other are constituted by a planar upper heater and a lower heater, and the upper heater and the lower heater are provided outside the top plate and the bottom plate of the heating chamber. The top plate and the bottom plate are in contact with each other so as to be located on the back side.

[0012] In the heating cooker according to the present invention, the upper heater is constituted by a tubular heater, and the upper heater is provided outside the heating cabinet and at an opening provided on the back side of the top plate of the heating cabinet. It is.

Further, the heating cooker according to the present invention has a tubular heater and a reflector provided so as to surround an opening provided in the heating chamber.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention, and FIG. 2 is a perspective view showing its appearance. The same parts as those in the conventional example described with reference to FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 4a denotes an opening provided on the back side of the bottom plate 4 of the heating chamber 2 so that its length direction is substantially parallel to the width direction of the main body 1, and 7c denotes a back side of the top plate 7 of the heating chamber 2. The length direction is an opening provided substantially parallel to the width direction of the main body 1. Reference numeral 20 denotes a lower portion of the bottom plate 4 of the heating chamber 2 and an opening 4 of the bottom plate 4.
a is a tubular lower heater, and 21 is a tubular upper heater disposed above the top plate 7 of the heating chamber 2 at the opening 7c of the top plate 7. Both heaters 20, 21 are, for example, ceramic pipes. , And has a built-in resistance wire, and their calorific value is 600 W. Reference numeral 22 denotes a lower reflection plate provided on the bottom surface of the bottom plate 4 so as to cover the opening 4a of the bottom plate 4 and surround the lower heater 20, and 23 denotes a top plate 4 covering the opening 7c of the top plate 7 and surrounding the upper heater 21. The upper and lower reflectors 22 and 23 reflect the heat of the lower heater 20 and the upper heater 21 to the heating chamber 2 side. Reference numeral 24 denotes a pair of shelf supports projecting from the rear side of the side plate 6 of the heating cabinet 2, and a cooking net 25 serving as a mounting table is removably mounted on the cooking net 25. 17 is disposed between the lower heater 20 and the upper heater 21.

In this embodiment having the above-described structure, when cooking the food 17, first, the door 8 is opened and the cooking net 25 on which the food 17 is placed is placed on the shelf holder 24.
And the door 8 is closed. At this time, the food 17 is located on the back side of the heating cabinet 2. Then, when a power supply (not shown) is turned on, the lower heater 20 and the upper heater 21 are energized to generate heat, and as shown by the dashed line arrow in FIG. As a result, the food 17 on the cooking net 24 is radiated to the inside of the heating cabinet 2, particularly on the back side, to heat the food 17 on the cooking net 24.
3 and is radiated as reflected heat to the rear side inside the heating chamber 2 to heat the food 17 and to heat the space 2a on the rear side of the heating chamber 2. The heat reflected on the back plate 5 is reflected on the food 17. The food 17 is cooked by the direct heating by the radiant heat from the lower heater 20 and the upper heater 21 and the indirect heating by the heated air heat in the space 2a on the back side of the heating chamber 2.

Here, FIG. 3 is a diagram showing a rise in the temperature of the food 17 in the cooking device of this embodiment and a conventional cooking device, whereby the temperature rise of the cooking device of this embodiment does not increase. It turns out that it is quicker than the conventional thing, and it turns out that the cooked food 17 is cooked in a short time.

As described above, since the lower heater 20 and the upper heater 21 for heating the food 17 are disposed on the rear side of the bottom plate 4 and the top plate 7 of the heating chamber 2, the space on the rear side of the heating chamber 2 is provided. Although the portion 2a is also heated, as shown by the dashed-dotted arrow in FIG. 1, heat radiation from the glass window 9 of the door 8 to the outside is reduced, and most of the heat of both heaters 20 and 21 is concentrated on the food 17. Thus, it is possible to perform efficient and efficient cooking with heating. In addition, since most of the heat of the heaters 20 and 21 is concentrated on the food 17,
The total calorific value of 0,21 (1200 W) can be cooked with less calorific value than the total calorific value of the heater of the conventional heating cooker (1320 W), and the cooked food 17 is concentrated on the cooked food 17. And the reflected heat reflected on the back plate 5 of the heat radiated into the heating chamber 2 together with the cooked food 17.
, The cooking time can be reduced from, for example, 9 minutes to 5 minutes. Furthermore, since the temperature difference between the outer wall of the glass window 9 and the vicinity of the glass window 9 of the heating chamber 2 is reduced, heat radiation to the outside is reduced, and an energy-saving cooking device can be obtained.

Embodiment 2 FIG. FIG. 4 is a longitudinal sectional view of a second embodiment of the present invention. In this embodiment, a planar lower heater 26 and an upper heater are replaced with the tubular lower heater 20 and the upper heater 21 of the first embodiment. 27 is brought into contact with the bottom surface of the bottom plate 4 and the top surface of the top plate 7, respectively. When the lower heater 26 and the upper heater 27 are brought into contact with the bottom plate 4 and the top plate 7, approximately one half in the depth direction. Is formed in the high heat generating portion A, and the high heat generating portions A of both heaters 26 and 27 are connected to the heating chamber 2.
It is arranged so that it may be located on the back side of.

As shown in FIG. 5, the planar lower heater 26 has a heater wire 2 made of, for example, a flat nichrome wire.
6a and an insulating plate 26b made of, for example, mica which sandwiches and insulates the heater wire 26a.
Almost one half in the depth direction of the heater wire 6b is a heater wire 26.
a are arranged at a uniform pitch and densely to form a high heat generating portion A, and the other half are formed by forming heater wires 26a at a uniform pitch and coarsely to form a low heat generating portion B. I have.
The heat generation amount of the high heat generation portion A is, for example, 400 W, and the heat generation amount of the low heat generation portion B is, for example, 200 W. The upper heater 27 has the same configuration as the lower heater 26, and the food 17 placed on the cooking net 25 is disposed between the high heat generating portions A of the two heaters 26, 27. Note that the openings 4a and 7c of the bottom plate 4 and the top plate 7, and the lower reflector 22 and the upper reflector 23 are omitted.

In this embodiment having the above-described structure, the food 17 stored on the back side of the heating chamber 2 is heated and cooked by the lower heater 26 and the upper heater 27 in the same manner as described in the first embodiment. I do. And the lower heater 2
A large amount of radiant heat is radiated to the food 17 by the high heat-generating portion A of the upper heater 27 and the low heat-generating portion B to heat the inside of the heating chamber 2.

As described above, since the high heat-generating portions A of the lower heater 26 and the upper heater 27 are in contact with the bottom surface of the bottom plate 4 of the heating chamber 2 and the upper surface of the top plate 7 on the back side, A large amount of heat from the high heat generating portions A of the heaters 26 and 27 is concentrated on the food 17 and the food 17 can be heated and cooked with a small amount of heat, so that efficient and efficient cooking can be performed. it can. Further, the lower heater 26 and the upper heater 2
7 is located on the door 8 side, the temperature difference between the outer wall of the glass window 9 and the vicinity of the glass window 9 of the heating chamber 2 is reduced, and heat radiation from the glass window 9 to the outside is small. Thus, an energy-saving heating cooker can be obtained.

Embodiment 3 FIG. In the third embodiment, instead of the tubular lower heater 20 of the first embodiment, the planar lower heater 26 of the second embodiment is in contact with the bottom surface of the bottom plate 4. Note that the opening 4a of the bottom plate 4 and the lower reflection plate 22 are omitted.

With this configuration, substantially the same operations and effects as those of the first and second embodiments can be obtained.
The lower heater 2 is attached to the food 17 stored on the back side of the heating chamber 2.
A large amount of radiant heat from the high heat generating section A and the upper heater 21 is irradiated, and the cooking 17 can be heated and cooked in a short time with high heating efficiency.

In the above-described second and third embodiments, approximately one half in the depth direction of the lower heater 26 and the upper heater 27 when contacting the bottom plate 4 and the top plate 7 is provided to the high heat generating portion A. The lower heater 26 and the upper heater 26, which are formed only by the high heat generating portion A by omitting the heater wire of the low heat generating portion B, are shown in FIG. 27. In this case, the same effect can be obtained.

[0026]

As described above, the heating cooker according to the present invention has a main body having an opening on the front side and a heating chamber formed therein, and a door which is openably and closably attached to the opening of the main body. And heating means disposed at the upper and lower portions of the heating chamber,
A cooking table removably accommodated in the heating chamber, wherein the heating means comprises a pair of opposed heating elements, and the pair of heating elements are provided on the upper and lower sides of the heating chamber and on the back side. At the same time, since the mounting table is arranged between the pair of heating elements, the heat of the pair of heating elements is concentrated on the cooked food, and the cooking can be performed without waste and with high heating efficiency. Further, heat radiation from the door to the outside can be reduced, and an energy-saving cooking device can be obtained.

In the heating cooker according to the present invention, a pair of opposed heating elements are constituted by a tubular upper heater and a lower heater, and the upper heater and the lower heater are provided outside the heating cabinet and the top plate and the bottom plate of the heating cabinet. The upper and lower heaters are provided so as to face the opening provided on the back side of the heater, or to form a pair of heating elements facing each other in such a manner that approximately one-half of the depth direction of the heating element is formed as a high heat-generating portion. And a pair of heat-generating portions of the upper heater and the lower heater which are in contact with each other so as to be positioned outside the top plate and the bottom plate of the heating chamber and on the back side of the top plate and the bottom plate. The body is constituted by a planar upper heater and a lower heater, and the upper heater and the lower heater are in contact with each other so as to be positioned outside the top plate and the bottom plate of the heating chamber and on the back side of the top plate and the bottom plate. Young In other words, the upper heater is constituted by a tubular heater, the upper heater is provided outside the heating chamber and at the opening provided on the back side of the top plate of the heating chamber, and the lower heater is a planar heater or its depth. The lower heater or the higher heater of the lower heater is located outside the bottom plate of the heating chamber and on the back side of the bottom plate. As a result, it is possible to obtain a heating cooker that can perform cooking in a short time with a small heating value and high heating efficiency.

Further, in the heating cooker according to the present invention, since the reflector is provided so as to surround the tubular heater and the opening provided in the heating chamber, the heat of the heater is radiated to the heating chamber as reflected heat. Thus, it is possible to obtain a heating cooker capable of further improving the heating efficiency and shortening the cooking time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of the first embodiment.

FIG. 3 is a diagram showing a rise in the temperature of a food in the heating cooker according to the first embodiment and a conventional heating cooker.

FIG. 4 is a longitudinal sectional view of a second embodiment of the present invention.

FIG. 5 is a side view and a plan view showing a part of a lower heater according to a second embodiment in a cross section.

FIG. 6 is a longitudinal sectional view showing a configuration of a conventional cooking device.

FIG. 7 is a side view and a plan view showing a cross section of a part of a bottom heater according to a conventional cooking device.

FIG. 8 is a longitudinal sectional view showing the configuration of another conventional cooking device.

[Explanation of symbols]

1 main body, 2 heating cabinet, 3 opening, 4 bottom plate, 7 top plate, 8 door, 17 cooking, 20, 26 lower heater, 2
1, 27 upper heater, 22 lower reflector, 23 upper reflector,
25 Cooking net, A High heat generation part.

Claims (6)

[Claims] 1. A main body having an opening on the front side and having a heating chamber formed therein, a door openably and closably attached to the opening of the main body, and disposed at upper and lower portions of the heating chamber. Heating means, and a mounting table of the food removably accommodated in the heating chamber, wherein the heating means is a pair of heating elements facing each other, the pair of heating elements of the heating chamber A heating cooker provided on the upper and lower sides and on the back side, wherein the mounting table is arranged between the pair of heating elements. 2. A pair of opposed heating elements are constituted by a tubular upper heater and a lower heater, and the upper heater and the lower heater are provided outside the heating chamber and on the back side of a top plate and a bottom plate of the heating chamber. The cooking device according to claim 1, wherein the cooking device is provided so as to face the opening. 3. A pair of opposed heat generating elements are formed by a planar upper heater and a lower heater in which approximately one-half of a depth direction thereof is formed as a high heat generating section, and the high heat generating sections of the upper heater and the lower heater are provided. 2. The heating cooker according to claim 1, wherein the abutment is in contact with the outside of the top plate and the bottom plate of the heating cabinet and on the rear side of the top plate and the bottom plate. 4. A pair of opposing heating elements are constituted by a planar upper heater and a lower heater, and the upper heater and the lower heater are provided outside the top plate and the bottom plate of the heating chamber and on the back surface of the top plate and the bottom plate. 2. The cooking device according to claim 1, wherein the cooking devices are in contact with each other so as to be located on the side. 5. An upper heater comprising a tubular heater, wherein the upper heater is provided outside the heating chamber and at an opening provided on a back side of a top plate of the heating chamber. Item 5. A heating cooker according to item 3 or 4. 6. The heating cooker according to claim 2, wherein a reflector is provided so as to surround an opening provided in the tubular heater and the heating chamber.