JP2005003222A - Oven cooking range - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oven cooking range generating the far infrared ray without using accessories. <P>SOLUTION: In this oven cooking range including a function of an oven in addition to a function of a range, a bottom plate 8 of a heating chamber 9 is provided with a far infrared ray generating function, which dispenses with the accessories for generating the far infrared ray, and simplifies a constitution. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a microwave oven having a function of generating far infrared rays.
[0002]
[Prior art]
Conventionally, in a microwave oven, a cooking utensil that absorbs microwaves and emits far-infrared radiation is installed in a heating chamber, and the cooking object is placed in the cooking utensil, thereby radiating microwaves and far-infrared radiation. There exists a thing of the structure cooked by heating (for example, refer patent document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-87045
[Problems to be solved by the invention]
In the said structure, when cooking with far infrared rays, the accessory which is a cooking appliance which generate | occur | produces far infrared rays is required separately.
[0005]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a far-infrared ray generating function on a bottom plate of a heating chamber in an oven range capable of electric heater heating and microwave heating. It is in providing the microwave oven characterized by generating far infrared rays without.
[0006]
[Means for Solving the Problems]
The microwave oven according to claim 1, wherein a bottom plate that generates far-infrared rays is provided at the bottom of the heating chamber in the microwave oven capable of heating an electric heater and microwave heating of an object to be cooked in the heating chamber. .
According to the said structure, since the baseplate of the heating chamber of a microwave oven generate | occur | produces a far infrared ray, it can cook with a far infrared ray, without using an accessory.
[0007]
The microwave oven according to claim 2 is provided so as to cover the excitation opening at the bottom of the heating chamber, and a magnetron for supplying microwaves to the excitation opening formed at the bottom of the heating chamber via a waveguide. A bottom plate formed of a microwave transmitting material, and an electric heater provided at the bottom of the heating chamber and positioned below the bottom plate, and a far-infrared ray generating coating film is applied to the bottom plate. It is characterized by.
According to the said structure, a far-infrared ray can be generated by heating the far-infrared ray generation coating film apply | coated to the bottom plate of a heating chamber with the electric heater provided in the downward direction of the bottom plate. The same effect can be obtained.
Moreover, since the bottom plate of the heating chamber is formed of a microwave transmitting material and transmits microwaves, it does not hinder microwave heating cooking (range cooking). In this case, since the bottom plate covers the excitation opening, the heat in the heating chamber does not leak from the excitation opening during cooking by the electric heater (oven cooking).
[0008]
The microwave oven according to claim 3 is characterized in that an upper electric heater is provided on the ceiling of the heating chamber.
According to the above configuration, heat can be applied from both the upper and lower surfaces by the upper heater in addition to the electric heater below the bottom plate.
[0009]
The microwave oven according to claim 4 is characterized in that a microwave heating element is applied to the lower surface of the bottom plate.
According to the above configuration, the microwave heating element receives microwaves and generates heat, and the far-infrared ray generation coating film heated thereby generates far-infrared rays and can be cooked by microwaves and far-infrared rays. .
[0010]
The microwave oven according to claim 5 is characterized in that a far infrared ray generating coating film is applied to the entire heating chamber.
According to the above configuration, far-infrared rays can be emitted from the left and right plates, the back plate, and the ceiling plate, which are the entire surface of the bottom plate and the heating chamber.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A first embodiment of the present invention will be described below with reference to FIGS.
First, in FIG. 2 showing a schematic appearance of the microwave oven, the microwave oven main body 1 is formed by disposing a rectangular inner box 3 whose front surface is opened in a rectangular outer box 2. A lower-opening type door 4 for opening and closing the opening is pivotally provided. A machine room 5 is formed in the microwave oven body 1 at a position adjacent to the inner box 3 from the side, and a magnetron or the like to be described later is housed in the machine room 5. An operation panel 6 and a display 7 are provided on the front side of the machine room 5 in the microwave oven body 1.
[0012]
As shown in FIG. 1, the lower portion of the inner box 3 is formed in a dish shape having a support step portion 3 a, and a bottom plate 8 is installed on the support step portion 3 a, so that the inner box 3 The interior is partitioned into two rooms, a heating chamber 9 and a bottom 10 of the heating chamber 9, by a bottom plate 8. The bottom plate 8 is formed of a microwave transmitting member such as ceramic for the purpose of transmitting microwaves when the range function, which is a function of an oven range, is used. Further, the bottom plate 8 is a so-called flat table, and has a far infrared ray generation function by applying a far infrared ray generation coating film 8a to at least the entire upper surface on the heating chamber 9 side as shown in FIG.
The far-infrared ray generating coating film 8a is formed by applying a glaze having a far-infrared radiation effect. This glaze is made of, for example, silicon oxide (SiO ₂ ) as a main component, aluminum oxide (AL ₂ O ₃ ), or oxidation. The composition contains lithium (Li ₂ O) or the like. Although ceramic materials are inherently excellent in far-infrared radiation effects, far-infrared radiation is radiated more efficiently by adding an inorganic pigment to this glaze.
[0013]
A far-infrared coating is also applied to at least the entire inner surfaces of the left, right side plate, back plate and ceiling plate of the heating chamber 9.
[0014]
The machine room 5 is provided with a magnetron 11 that is a device for generating microwaves. An excitation port 12 is provided on the lower surface of the bottom 10 of the heating chamber 9. A waveguide 13 is provided between the magnetron and the excitation port 12 to guide the microwave generated from the magnetron 11 to the excitation port 12 while reflecting the microwave. As described above, the excitation opening 12 is provided in the bottom portion 10, so that the bottom plate 8 covers the excitation opening 12 when the bottom plate 8 is installed in the support step portion 3 a. In addition, a rotating antenna 14 for reflecting the microwave reaching the excitation opening 12 into the heating chamber 9 is rotatably disposed on the bottom portion 10, and the rotating antenna 14 is connected to a motor via a shaft 15. 16 is rotated. The rotating antenna 14 is made of a material that hardly absorbs microwaves so as to reflect the microwaves, and rotates at the time of microwave oscillation to diffuse the microwaves radiated from the excitation port 12 into the heating chamber 9. As a result, the object to be heated 19 is uniformly heated in the heating chamber 9.
[0015]
An electric heater, for example, a rectangular frame-shaped sheathed heater 17 is provided on the bottom 10 below the bottom plate 8. An upper electric heater, for example, a flat heater 18, is provided on the ceiling of the heating chamber 2, for example, the upper surface of the ceiling plate. Is provided.
[0016]
Next, the operation of the embodiment will be described.
First, in the case of performing oven cooking, an object to be cooked 19 (bread in the first embodiment) is placed on the bottom plate 8, the sheathed heater 17 and the flat heater 18 are energized by the operation of the operation panel, and generate heat. The cooking object 19 inside is heated and cooked. And the far-infrared ray generation coating film 8a of the bottom plate 8 generates far-infrared rays by being heated by the sheathed heater 17. Also, far infrared rays are generated from the far infrared ray generating coating film on the inner surface of the heating chamber 9 by being heated by the flat heater 18 and the sheathed heater 17.
[0017]
Thus, the object to be cooked 19 placed on the bottom plate 8 is heated by far infrared rays generated from the bottom plate 8 and the entire inner surface of the heating chamber 9 and by the sheathed heater 17 and the flat heater 18, in other words, far infrared radiation and Heater can be heated.
Next, when performing range cooking, the magnetron 11 is energized by operating the operation panel 6 to generate microwaves, and the microwaves are guided into the bottom 10 through the waveguide 13 and the excitation port 12, The object to be cooked 19 is cooked by being reflected by the rotating antenna 14 and transmitted through the bottom plate 8 and radiated into the heating chamber 9.
[0018]
As described above, according to the present embodiment, since far infrared rays are generated from the bottom plate 8 necessary for forming the heating chamber 9, there is no need for a conventional cooking utensil that generates far infrared rays. It is. Then, due to the effect of far infrared rays radiated from the far infrared ray generating coating film 8a applied to the entire inner surface of the bottom plate 8 and the heating chamber 9, the cooking object 19 includes a plump, a sheathed heater 17 and a flat heater 18. By heating, the outside can be baked. Further, the bottom plate 8 covers the excitation opening 12 formed in the bottom portion 10, so that the heat in the heating chamber 9 can be prevented from leaking from the excitation opening 12 during oven cooking.
Furthermore, the bottom plate 8 is made of ceramic which is a microwave transmitting member, so that there is no obstacle to microwave transmission during cooking.
[0019]
(Second embodiment)
FIG. 3 shows a second embodiment of the present invention. The difference from the first embodiment is that a bottom plate 20 is provided instead of the bottom plate 8. The bottom plate 20 is formed of the same material as that of the bottom plate 8, and a far infrared ray generating coating film 20a similar to the far infrared ray generating coating film 8a is applied to the entire upper surface, and a microwave heating element 20b is applied to the lower surface. In this case, on the lower surface of the bottom plate 20, the outer peripheral four sides and the central circular portion are the non-applied portions 20c and 20d where the microwave heating element 20b is not applied, thereby changing the coating density.
[0020]
In the second embodiment, referring to FIG. 1 for convenience of explanation, when the microwave generated by the magnetron 11 is emitted into the bottom portion 10, the microwave heating element 20b applied to the bottom plate 20 is microwaved. In response to heat generation, the far-infrared ray generating coating film 20a is heated. The heated far infrared ray generating coating film 20a generates far infrared rays. In the vicinity of the uncoated portion 20d at the center of the bottom plate 20, the microwave diffusely reflected by the rotating antenna 14 is transmitted and enters the heating chamber 9 for use in cooking. Thus, the object to be cooked can be cooked with microwaves and far infrared rays even when the range function is used.
[0021]
(Third embodiment)
FIG. 5 shows a third embodiment of the present invention. The difference from the first or second embodiment is that the net 21 is supported by forming shelf support portions 9 a on the left and right side plates of the heating chamber 9. In this configuration, it can be floated from the bottom plate 20. Other configurations are the same as those in the first or second embodiment.
This third embodiment is particularly suitable for the case where it is desired to reheat the food to be cooked 22 (fish in the embodiment) that has been cooled or to cook without cooking the back side of the food. Even with such a configuration, the same effect as in the first or second embodiment can be obtained.
[0022]
In addition, in the said 3rd Example, when installing the net | network 21 in the shelf support part 9a formed in the inside of the heating chamber 9, and cooking the to-be-cooked object 22, for example, fish, the liquid which oozes out from a fish (22) is a net | network. Since it does not accumulate on top, it can be cooked without immersing the back side of the fish (22). With such a configuration, the back side of the fish (22) can be cooked without being blown, and the inside can be cooked plumply by far-infrared heating.
[0023]
(Other examples)
The present invention is not limited to the embodiments described above and shown in the drawings, and can be expanded and modified as follows.
In the first embodiment, far-infrared rays may be applied to the lower surface of the bottom plate 8, and the far-infrared coating film 8 a is applied to at least the entire inner surface of the left, right side plate, back plate and ceiling plate of the heating chamber 9. Although applied, it may also be applied to the outer surface.
In the second embodiment, the circular uncoated portion 20d is formed at the center of the bottom plate 20. Instead, a non-coated portion that has a triangular shape, an elliptical shape, a rectangular shape, or a rhombus shape is formed. It may be formed.
In the second embodiment, the non-coated portion 20d is formed on the bottom plate 20 to change the density of the microwave heating element 20b. For example, the density is changed by changing the coating thickness. May be.
[0024]
【The invention's effect】
As is apparent from the above description, in the microwave oven including the oven function in addition to the range function, the bottom plate of the heating chamber is provided with a far infrared ray generating function to provide an accessory for generating far infrared rays. This eliminates the effect of simplifying the configuration.
[Brief description of the drawings]
FIG. 1 is an overall longitudinal sectional view showing a first embodiment of the present invention. FIG. 2 is a perspective view. FIG. 3 is a top view (a) and a longitudinal sectional view (b) of a bottom plate.
FIG. 4 is a top view (a), a longitudinal sectional view (b), and a back view (c) of a bottom plate showing a second embodiment of the present invention.
FIG. 5 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.
1 is a microwave oven body, 3 is an inner box, 8 is a bottom plate, 8a is a far infrared ray generation coating film, 9 is a heating chamber, 9a is a shelf support portion, 10 is a bottom portion of the heating chamber, 11 is a magnetron, 12 is an excitation port, 13 is a waveguide, 14 is a rotating antenna, 17 is a sheathed heater, 18 flat heater, 20 is a bottom plate, 20a is a far infrared ray generation coating film, 20b is a microwave heating element, 20d is an uncoated part, and 21 is a net. .

Claims (5)

An oven range in which an electric heater and microwave heating of an object to be cooked can be performed in a heating chamber, wherein a bottom plate for generating far infrared rays is provided at the bottom of the heating chamber. A magnetron for supplying microwaves through a waveguide to an excitation port formed at the bottom of the heating chamber;
A bottom plate provided at the bottom of the heating chamber so as to cover the excitation port, and formed of a microwave transmitting material;
An electric heater provided at the bottom of the heating chamber and positioned below the bottom plate;
A microwave oven characterized in that a far-infrared ray generating coating film is applied to the bottom plate. The microwave oven according to claim 2, wherein an upper electric heater is provided on a ceiling portion of the heating chamber. The microwave oven according to claim 2 or 3, wherein a microwave heating element is applied to the lower surface of the bottom plate. The microwave oven according to any one of claims 2 to 4, wherein a far-infrared ray generating coating film is applied to the entire surface of the heating chamber.

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