JPH09299242A - Device for cooking by heating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce heating irregularity in high frequency heating and to use both high frequency heating and heater heating by mounting a cooking tray formed by a high frequency transmissive material on a shelf provided on a side face inside a heating chamber. SOLUTION: At the time of cooking by the high frequency heating, food is mounted on a shelf tray 17 and mounted to the shelf 7 of the heating chamber 2 first, a door is closed and high frequency heating control is instructed by an operation panel. Then, a high frequency is oscillated from a magnetron 9 and the high frequency heats the upper part of the food by being power fed from a power feeding port 5 to the heating chamber 2, made to hit the upper part of the food and absorbed. The high frequency not absorbed by the food is transmitted through the shelf tray 17, reflected from the bottom part and side part, etc., of the heating chamber 2, transmitted through the shelf tray 17 again, made to hit the lower part of the food and absorbed and the lower part of the food is heated. At the time, when the heater heating is used together, after heating the food from the inside by the high frequency heating first for instance, heating by upper and lower heaters 10 and 18 is performed and control for scorching pattern the surface of the food is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker for heating with a high frequency wave and a heater.

[0002]

2. Description of the Related Art Generally, in a high frequency heating cooker, when a shelf provided as a cooking dish placed on the shelf is directly placed on a shelf provided in a heating chamber and a high frequency is applied to the shelf, Sparks are generated between the shelf plate and the heating chamber, and particularly sparks are intensively generated between the peripheral end surface of the shelf plate and the shelf. Therefore, for example, as shown in Japanese Utility Model Publication No. 61-2405, a bent portion is formed at the peripheral edge of the shelf plate so that the end surface does not face the mounting surface of the shelf, and a enamel coating is applied to the entire surface of the shelf plate. There is something I did. Figure 9 shows this
It is sectional drawing of the high frequency heating cooker shown by 2405 publication. Reference numeral 2 is a heating chamber, 7 is a convex portion provided on both side walls of the heating chamber 2, and a shelf for placing a shelf plate, which will be described later, is provided at an upper portion of the heating chamber 2 for heating and cooking with a heater. Upper heater, 11 is a mounting plate for mounting the upper heater 10, 1
Reference numeral 2 denotes a reflection plate that reflects the heat generated by the upper heater 10 into the heating chamber, 13 is a motor that is disposed in the lower portion of the heating chamber 2, and rotates a rotary table described later, 14 is a rotating shaft of the motor 13, and 15 is a motor. Is a rotary table which is detachably arranged on the rotary shaft 14, and 18 is a lower heater which is arranged below the heating chamber 2 for heating and cooking with the heater. Reference numeral 20 denotes a shelf plate to be placed on a pair of shelves 7 provided in the heating chamber 2, and a bent portion is formed at the peripheral edge so that the end surface does not face the mounting surface of the shelf, and the entire shelf plate is provided. It has a enamel coating. In such a shelf plate, it is possible to heat and cook without causing sparks.

[0003]

In the shelf plate 20 made of the metal material coated with the enamel coat of the conventional example as described above, a bent portion is formed at the peripheral portion of the shelf plate, and the enamel coat is further applied. Therefore, sparks do not occur in high frequency cooking, but since the material is a metal that reflects high frequencies, in high frequency cooking, the surface of food 21, which is the object to be heated, is high frequency 22 It is heated by the food 21, but is absorbed by the food 21, the high frequency wave 22 does not reach the shelf placing surface side 21a of the food 21 and is hard to be heated, and the high frequency wave 22 is reflected on the opposite side of the food placing surface of the shelf plate. It did not hit the food 21, so it was difficult to heat.

As described above, there is a disadvantage that an extreme heating temperature difference, that is, heating unevenness occurs between the surface side of the food and the side of the shelf mounting surface. Therefore, the cooking using the shelf plate is not the high frequency heating but the heater heating, and the high frequency heating is used only for cooking the food placed on the rotary plate mounted on the rotary table 15 which prevents uneven heating due to rotation. There was also a drawback. On the other hand, as an example of reducing the heating unevenness, for example, Japanese Patent Application Laid-Open No. 301989/1989 discloses a device provided with a plurality of power supply ports. However, there is no clear description about the shelf, and if the shelf is made of a commonly used enamel-coated metal material, the food placement surface is difficult to heat because the high frequency does not reach the food and There is a drawback that uneven heating occurs on the front surface side and the shelf mounting surface side.

The present invention has been made in order to solve the above-mentioned problems, and high-frequency heating causes less uneven heating, and high-frequency heating and heater heating can be used in combination.
The purpose is to obtain a heating cooker that does not generate sparks.

[0006]

In a shelf plate of a cooking device according to the present invention, a high frequency oscillator for generating a high frequency, a heating chamber for containing an object to be heated, and a power supply for supplying the high frequency to the heating chamber. It has a mouth and a cooking dish placed on a side wall of the heating chamber and formed of a high-frequency permeable material.

Further, power supply ports for supplying high frequencies are provided at least above and below the cooking plate placed on the shelf.

Further, the cooking plate is placed on a rotary table provided below the shelf.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. 1 is a perspective view of a heating cooker according to a first embodiment of the present invention, FIG. 2 is a sectional view of the heating cooker shown in FIG. 1, and FIG. 3 is a cooking dish to be used by being placed on a shelf. Is a shelf plate. In the figure, 1 is a cooker main body, 2 is a heating chamber, 3 is a door pivotally supported on the front of the heating chamber 2 so as to open and close,
Reference numeral 4 is an operation panel for controlling heating and cooking, 5 is a power supply port provided on the side wall of the heating chamber 2 for supplying high frequency power to the heating chamber 2, and 5a is a block made of a high-frequency transparent material for blocking the power supply port 5. Reference numeral 7 is a member, 7 is a shelf on which both side walls of the heating chamber 2 are formed to project, and a shelf for mounting a later-described shelf is placed, 8 is a waveguide for guiding high-frequency waves to the power supply port 5, and 9 is attached to the waveguide 8. A magnetron that oscillates a high frequency, 10 is an upper heater arranged above the heating chamber 2 for heating and cooking with a heater, 11 is a mounting plate for mounting the upper heater 10, and 12 is heat generated by the upper heater 10. A reflector for reflecting the light into the room 2, 1
Reference numeral 3 denotes a motor arranged below the heating chamber 2 for rotating a rotary base, which will be described later, 14 denotes a rotation shaft of the motor 13, and 15 denotes a motor.
Is a turntable that is removably arranged on the rotary shaft 14, and 17 is a cooking dish that is made of a high-frequency transparent material such as glass, pottery, or ceramics, and is placed on a pair of shelves 7 provided in the heating chamber 2. Shelf plate 18 is a lower heater disposed under the heating chamber 2 for heating and cooking with the heater.

Next, the heating and cooking method will be described. First, high-frequency cooking with the shelf plate 17 placed on the shelf 7 in the heating chamber 2 and made of a high-frequency transparent material will be described. As is generally known, the high frequency used for high frequency cooking is absorbed by the moisture contained in the food that is the object to be heated when it hits the food, and the food is heated by the heat of the moisture, the glass, Ceramics and other materials have the property of being transmitted and being reflected when they hit metal. A food (not shown) is placed on a shelf 17 (which has a rectangular shape in the first embodiment) made of a high-frequency transparent material, placed on the shelf 7 of the heating chamber 2, and the door 3 is closed. When a predetermined high frequency heating control instruction is given by the operation panel 4, the high frequency is oscillated from the magnetron 9, and the high frequency is supplied to the heating chamber 2 from the power supply port 5 through the waveguide 8. The high frequency power supplied to the heating chamber 2 hits the upper portion of the food placed on the shelf 17 and is absorbed.
Heat the top of the food. The high frequency that is not absorbed by the food passes through the shelf plate 17, is reflected by the bottom and side parts of the heating chamber 2, and again penetrates the shelf plate 17, and hits the shelf mounting surface side of the food, that is, the lower part of the food product. It is absorbed and heats the bottom of the food. When the predetermined cooking time has passed, the cooking is finished.

Next, heating cooking using both high frequency heating and heater heating will be described. Place the food on the shelf 17
It is placed on the shelf 7 of the heating chamber 2, the door 3 is closed, and a predetermined heating control instruction is given by the operation panel 4. The shelf plate 17 used at this time is preferably made of a material such as ceramic having good heat resistance and high frequency transparency. According to this heating control instruction, first, high-frequency heating is performed to heat the food from the inside, and subsequently, heating is performed by a heater to perform control to make a kogaku on the surface of the food.
Alternatively, there is a control for heating the inside of the food by heating with a heater and then making a kogaku on the surface of the food and then heating with high frequency. Further, a heating control instruction such as heating control for alternately performing high frequency heating and heater heating can be issued. The heating control instruction is
The optimum heating control can be selectively instructed according to the cooking mode of various foods. When the predetermined cooking time has passed, the cooking is finished.

As described above, in a conventional shelf plate made of a metal material having a enamel coating, the high frequency hits the food only from the upper part of the shelf plate, so that significant heating unevenness occurs. By using the high frequency transparent material for the shelf plate 17 as in the case of the first embodiment, high frequency can be applied to the entire surface of the food by high frequency heating cooking, and uneven heating can be reduced.
Further, it is possible to prevent sparks from being generated between the shelf plate 17 and the shelf 7.

Further, since the shelf plate 17 is made of a material having high-frequency transparency and good heat resistance, both high-frequency heating and heater heating can be used together and the cooking time can be shortened.

Furthermore, the high frequency heating and the heater heating can be used for heating and cooking without changing the cooking plate, and the labor of cooking can be saved.

The shape of the shelf 17 is not limited to a quadrangle, but may be any shape such as a hexagon or an ellipse that can be placed on the shelf according to the shape of the heating chamber 2 or the application.

Further, at least the food placing surface of the shelf plate 17 is surface-treated with non-adhesive fluororesin (PTFE) or the like so that no oil or food residue is burnt during cooking and cleaning after cooking is easy. Can be

Embodiment 2 FIG. In the first embodiment,
Although the heating cooker having one power supply port 5 has been described, a heating cooker having a plurality of power supply ports 5 will be described. FIG.
Is a perspective view of a heating cooker according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view of the heating cooker shown in FIG. 4, and the same parts as those in FIG. 2 showing the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the figure, 5 is an upper power supply port provided on the upper side wall of the heating chamber 2 for supplying high frequency power to the heating chamber 2, and 6
Is a closing member made of a high-frequency permeable material for closing the power supply ports 5 and 6 provided at the lower part of the side wall of the heating chamber 2 for supplying high frequency power to the heating chamber 2. .

Next, the heating and cooking method will be described. Since the heating of the heater is the same as that of the first embodiment, a heating cooking method using high frequency will be described here. Further, since the procedure of heating and cooking is the same as that of the first embodiment, the heating operation will be described here. The high frequency power supplied to the heating chamber 2 from the upper power supply port 5 hits the upper part of the food (not shown) placed on the shelf 17 and is absorbed, and heats the upper part of the food. The high frequency wave which is not absorbed by the food passes through the shelf plate 17, is reflected by the bottom of the heating chamber 2 and the like and again penetrates the shelf plate 17,
The food is hit on the shelf side of the food, that is, the lower part of the food is absorbed and heats the lower part of the food. Further, the high frequency power supplied from the lower power supply port 6 to the heating chamber 2 passes through the shelf plate 17, hits the shelf mounting surface side of the food product, that is, the lower food product, and is absorbed and heats the lower food product. The high frequency wave that is not absorbed by the food passes through the shelf plate 17, is reflected by the upper part of the heating chamber 2 and the like, hits the upper part of the food and is absorbed, and heats the upper part of the food.

As described above, the shelf plate 17 is made of a material that is transparent to high frequencies, the power supply ports 5 and 6 are provided at the upper and lower portions, and the shelf plate 17 is arranged between the upper and lower power supply ports 5 and 6. Since the food is placed on the shelf plate 17, a high frequency is applied to the food from the upper and lower portions of the food, and uneven heating can be reduced.

Further, since the shelf plate 17 is made of a material having high-frequency transparency and good heat resistance, high-frequency heating and heater heating can be used together, and the cooking time can be shortened.

Further, the high frequency heating and the heater heating can be used for heating and cooking without changing the cooking dish, and the labor for cooking can be saved.

In the second embodiment, the power supply ports 5 and 6 are used.
Although the above description has been given with an example in which the upper power supply port 5 is provided at two positions above and below the side wall of the heating chamber 2, the upper power supply port 5 may be provided at the top surface of the heating chamber 2, and the lower power supply port 6 is provided at the bottom surface of the heating chamber 2. May be provided,
Further, another power supply port may be provided in addition to the upper and lower power supply ports 5 and 6. That is, the shelf 17 has an upper power feed port 5 and a lower power feed port 6.
It may be placed between.

Further, as shown in FIG. 6, shelf plate 17 or shelf 7
May be formed in a plurality of stages. The point is that the shelf plate 17 is arranged between the upper and lower power supply ports 5 and 6, and a large amount of cooking can be performed with less uneven heating.

Embodiment 3. In the first and second embodiments, the high-frequency heating cooking with the shelf plate made of a high-frequency transparent material has been described, but in the third embodiment, the cooking plate placed on the shelf plate and the turntable 15 is used. The high-frequency heating cooking using the rotating dish at the same time will be described.

FIG. 7 is a cross-sectional view of the heating cooker according to the third embodiment. The same parts as those in FIG. 2 showing the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the figure, 16 is a cooking plate placed on the turntable 15, which is a substantially circular rotating plate made of the same material as the shelf plate 17, that is, a high-frequency transparent material such as glass, pottery, or ceramic. is there.

Next, the heating and cooking method will be described. Here, since the heating of the heater is the same as that of the first embodiment, a heating and cooking method using high frequency will be described. Foods (not shown) are placed on the shelves 17 and the rotary dishes 16 each made of a high-frequency transparent material, and the shelves 17 are placed on the shelves 7 of the heating chamber 2.
Then, the rotary plate 16 is placed on the rotary table 15, and high-frequency heating cooking is performed in the same procedure as in the first embodiment. Here, since the power feed ports 5 and 6 are located at the upper and lower portions, the food placed on the shelf plate 17 is mainly heated by the high frequency power fed from the upper power feed port 5, and the food placed on the rotary plate 16 is heated. Is mainly heated by the high frequency power supplied from the lower power supply port 6. Since each dish is made of a high-frequency permeable material, a part of the high frequency that is fed from the upper power supply port 5 and is not absorbed by the food placed on the shelf 17 is transmitted through the shelf 17 and The food placed on the rotating dish 16 is absorbed and absorbed. Further, a part of the high frequency power supplied from the lower power supply port 6 and not absorbed by the food placed on the rotary dish 16 passes through the shelf plate 17 and is absorbed by the food placed on the shelf plate 17. Further, since the rotary plate 16 is rotated by the motor 13, the rotary plate 16 receives the high frequency wave in the heating chamber 2 evenly and is heated more uniformly.

As described above, the shelf plate 17 and the rotary plate 16 are made of a high-frequency transparent material, two power supply ports 5 and 6 are provided, and the shelf plate 17 is arranged between the respective power supply ports 5 and 6. Since it is configured as described above, it is possible to perform high-frequency heating in the rotating dish 16 as well as two-stage cooking using the shelf dish 17 and the rotating dish 16 at the same time, and it is possible to cook a large amount of food at a time and Since high frequencies are received from the two power supply ports 5 and 6, it is possible to reduce uneven heating of the food placed on each plate.

Further, since the shelf plate 17 is made of a material having high-frequency transparency and good heat resistance, high-frequency heating and heater heating can be used together, and cooking time can be shortened.

Further, the high frequency heating and the heater heating can be used for heating and cooking without changing the cooking dish, and the labor for cooking can be saved.

The shape of the rotary plate 16 is not limited to the circular shape, but may be an elliptical shape, a hexagonal shape, a square shape, or the like.
Any form can be used as long as the heating chamber 2 can be rotated and placed on the.

Furthermore, by applying a surface treatment of non-adhesive fluororesin (PTFE) or the like to at least the food placement surface of the rotary dish 16, there is no burning of oil, food residue, etc. due to cooking, and cleaning after cooking is easy. Can be

Further, as shown in FIG. 8, the shelf plate 17 or the shelf 7
A plurality of stages may be formed, and the point is that the shelf plate 17 is arranged between the upper and lower power supply ports 5 and 6, and a large amount of cooking can be performed with less heating unevenness.

[0034]

Since the present invention is constructed as described above, it has the following effects.

A high frequency oscillator for generating a high frequency, a heating chamber for accommodating an object to be heated, a power supply port for supplying the high frequency to the heating chamber, and a shelf provided on a side surface of the heating chamber for transmitting the high frequency. Since it is equipped with a cooking dish made of flexible material, high frequency can be applied to the entire surface of the object to be heated, heating unevenness can be reduced, and there is a spark between the shelf dish and the cooking dish placed on the shelf. It can be prevented from occurring.

Further, since the power supply port for supplying the high frequency is provided at least above and below the cooking plate placed on the shelf,
Furthermore, a large amount of cooking can be performed with less uneven heating.

Further, since the cooking dish is placed on the rotary table provided under the shelf, it is possible to reduce uneven heating of the object to be heated.

[Brief description of drawings]

FIG. 1 is a perspective view of a heating cooker showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the heating cooker shown in FIG.

FIG. 3 is a perspective view of a cooking shelf plate of the heating cooker shown in FIG.

FIG. 4 is a perspective view of a heating cooker showing a second embodiment of the present invention.

5 is a cross-sectional view of the heating cooker shown in FIG.

[Fig. 6] Fig. 6 is a cross-sectional view of the heating cooker when the shelves are formed in two stages in the second embodiment of the present invention.

FIG. 7 is a cross-sectional view of a heating cooker showing a third embodiment of the present invention.

[Fig. 8] Fig. 8 is a cross-sectional view of a heating cooker in the case where two shelves are formed in the third embodiment of the present invention.

FIG. 9 is a cross-sectional view of a conventional heating cooker.

[Explanation of symbols] 1 heating cooker body, 2 heating chamber, 3 door, 4 operation panel, 5 upper power feed port, 6 lower power feed port, 7 shelves, 8
Waveguide, 9 magnetron, 10 upper heater, 11
Upper heater mounting plate, 12 Upper heater reflecting plate, 13 Motor, 14 Rotating shaft, 15 Rotating table, 16 Rotating plate, 17
Shelf plate, 18 lower heater.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Miyamae 1728 Omaeda, Hanazono-cho, Oza-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd.

Claims (3)

[Claims] 1. A high-frequency oscillator for generating a high-frequency wave, a heating chamber for accommodating an object to be heated, a power supply port for supplying the high-frequency wave to the heating chamber, and a shelf mounted on a side surface of the heating chamber. A heating cooker comprising: a cooking dish made of a high-frequency transparent material. 2. The heating cooker according to claim 1, wherein a power supply port for supplying a high frequency wave is provided at least above and below a cooking dish placed on a shelf. 3. The heating cooker according to claim 1 or 2, wherein the cooking plate is placed on a turntable provided below the shelf.