JPH06347045A - Microwave oven - Google Patents

Abstract

PURPOSE:To provide a microwave oven capable of performing a concurrent heating of a plurality of kinds of foods. CONSTITUTION:Surfaces acting as both side walls of a cooking chamber 1 when its door is opened are provided with engaging means, i.e., projections 3 oppositely faced at each of a plurality of the same height positions. Both ends of the shelf plates 2 made of electrical induction material are removably engaged with these projections 3, respectively, thereby a plurality of shelves are optionally arranged, foods 4 are mounted on these shelves to perform a concurrent heating of the foods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven capable of efficiently cooking a plurality of food items placed on a plurality of shelves so that they can be simultaneously heated.

[0002]

2. Description of the Related Art Since microwave ovens have been put on the market for cooking at home, various improvements and additions of new functions have been made. FIG. 2 shows an example of a product having a very general simple structure in the conventional household microwave oven.
2A is a side sectional view, and FIG. In the figure, 1 is a cooking chamber, 4 is food to be heated, 5 is a plate, 6 is a magnetron, 7 is a waveguide, 9 is a microwave oven power source, and 10 is a turntable.

It is difficult to make the electric field intensity of the microwaves in the cooking chamber 1 uniform anywhere, but it is not necessary for the food 4 to be heated to have uneven heating. Therefore, it is prevented. For this purpose, various things such as one that rotates a metal blade called a stirrer on the article to be heated, one that uses a turntable 10 that rotates a table on which the article to be heated is mounted, or one that includes both of the above are available. is there.

In order to guide the microwave from the antenna part of the magnetron 6 which generates the microwave to the cooking chamber,
At present, most models use the waveguide 7. There are various positions of the opening for radiating microwaves from the waveguide to the cooking chamber, such as one on the upper ceiling, one on the side wall, and one provided on two side walls in the diagonal direction of the cooking chamber.

Further, at present, there is a so-called oven type in which a normal electric heater is also provided in the cooking chamber so that various dishes can be cooked. In the case of such an oven-combined type, it is desirable to shorten the distance between the article to be heated and the electric heater in order to efficiently use the heat rays from the electric heater. There are various methods, but, for example, in Japanese Patent Laid-Open No. 4-245192,
When using the oven, extend the rotation axis of the turntable upwards, bring the heating target closer to the electric heater installed on the ceiling of the cooking chamber, and respond to changes in microwave load due to it.
At the same time, the insertion depth and position of the stub in the waveguide are adjusted to the optimum state in conjunction with the rise of the turntable,
Even in such a state, there is disclosed a so-called oven-combined microwave oven technique in which microwave power is efficiently used.

[0006]

Although various improvements have been made as described above, the conventional household microwave oven can usually heat only one dish at a time, depending on the size of the cooking chamber. If you want to heat several kinds of food at the same time, put different kinds of food in different small containers,
You have to put it on one turntable.

[0007] In the above method, the amount of one type of dish becomes small. Therefore, when cooking one dish at a time, the first cooked dish is the last cooked dish, as is usually done. By the time it's done, it'll be cold, or at least it's about to cool. Usually, in a general household, a plurality of types of dishes are provided for one meal, and it is not unusual that there are a plurality of types of dishes to be heated. In such a case, it is desirable that all the dishes be sufficiently warm. Nevertheless, only one conventional microwave oven could not meet such a demand. In the microwave oven combined with the above-mentioned oven, when using the electric heater together as an oven, the turntable is raised to bring the food closer to the electric heater installed on the ceiling side. The height of the dish itself is not very high, and it is also a proof that the volume of the cooking chamber often has plenty of room.

[0008] It is an object of the present invention to provide a microwave oven capable of heating and cooking a plurality of dishes in a single microwave oven while making effective use of the volume of the cooking chamber.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a plurality of surfaces facing each other on both side walls of the cooking chamber when the door is opened are opposed to each other at the same height. A plurality of shelves are provided by detachably engaging both ends of the dielectric shelves with the engaging means, and food is placed on each of the plurality of shelves. So that they can be heated at the same time.

[0010]

As described above, a dielectric plate is used as a shelf plate to arrange a plurality of shelves in the vertical direction, and the food to be heated is placed on each of these shelves. By arranging the openings of the tube at a plurality of vertical positions and radiating microwaves into the cooking chamber through these openings, it becomes possible to heat a plurality of dishes at the same time. In the present invention, the volume of the cooking chamber is effectively used, the heating load is increased, and thus microwave power is required more than before, but the shelf on which the food to be heated should be placed. Since the plate is made of a dielectric material, the amount of microwave power used can be suppressed to a relatively small amount.

[0011]

1 is a front view and FIG. 1 (b) is a side sectional view. In the figure, 1 is a cooking chamber, 2 is a shelf made of a dielectric material, 3 is a protrusion serving as an engaging means of the shelf, 4 is food to be heated, 5 is a plate, 6 is a magnetron, 7
Is a waveguide, 8 is a stirrer, and 9 is a microwave oven power supply.
The cooking chamber is of course provided with a door on its front surface, but it is not shown for the sake of simplicity. The side wall surface itself may be integrally formed with the projection, or may be attached separately. The projection may be continuous in a beam shape, or a plurality of point projections may be provided in the horizontal direction. If the protrusions for mounting the shelves are separately manufactured, they must be also made of a dielectric material such as ceramics or ceramics that does not easily absorb microwaves. The number of the shelves needs to be changed slightly depending on the height of the food to be heated on the shelves. Better The stirrer 8 provided on the waveguide 7 is
This is to prevent the occurrence of heating unevenness in the food to be heated by changing the distribution state of the microwave electric field strength in the cooking room over time to make it uniform, but the stirrer installation location is not limited to this, and the cooking room is not limited to this. It may be near the other wall.

[0012]

As described above, it is possible to heat a plurality of types of dishes at the same time, it is possible to shorten the cooking time, and even when the dishes are heaped up high, Even if the height of the dishes in the kitchen is low, the cooking chamber can be effectively utilized by changing the arrangement of the shelves and responding accordingly.

[Brief description of drawings]

1A is a front view of an embodiment of the present invention, FIG.
(B) is a side sectional view thereof.

FIG. 2 (a) is a front view showing a cross section of a part of a conventional microwave oven having a simple structure, and FIG. 2 (b) is a side sectional view thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cooking room, 2 ... Shelf board made from a dielectric material, 3 ... Protrusion of engaging means, 4 ... Food to be heated, 5 ... Plate, 6 ... Magnetron, 7 ... Waveguide, 8 ... Stirrer, 9 ... Microwave oven Power supply, 10 ... turntable.

Claims (1)

[Claims] 1. A plurality of engaging means are formed on the surfaces which will be the side walls of the cooking chamber when the door is opened so as to face each other at the same height, and the engaging means are respectively provided with a dielectric. A microwave oven characterized in that a plurality of shelves are provided by detachably engaging both ends of a body-made shelf board, and food can be placed on each of the plurality of shelves and heated simultaneously.