JP2780936B2 - High frequency direction adjustment device for microwave oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to microwave microwave feeding, and more particularly, to microwaves fed into a cavity, in which high frequency waves are divided into upper and lower portions of the cavity according to cooked food. The present invention relates to a high-frequency direction adjusting device for a microwave oven that adjusts the direction of high-frequency flow so that the high-frequency flow is introduced.

[0002]

2. Description of the Related Art A general microwave oven is classified into a turntable system and a bottom feeding-rotating antenna system according to a high-frequency feeding system. This will be briefly described below. FIG. 5 is a sectional view showing the structure of a conventional turntable type microwave oven. As shown in FIG. 1, the microwave oven of this type has a high frequency guide 2 provided on a side wall of a cavity 1 of the microwave oven, and a high frequency passage hole 3 provided on one side of the side wall.
Is formed, and the high frequency generated from the magnetron 4 heats the food 8 on the turntable 6 rotated by the turntable motor 5 through the passage hole 3.

On the other hand, in a conventional microwave oven of the bottom feeding-rotating antenna system, as shown in FIG. 6, a high frequency guide 2 extends from a side wall of a cavity 1 to a lower surface thereof. A high-frequency passage hole 3 is formed in the portion, and a rotating antenna 9 is installed in this passage hole 3 so as to be rotatable by a motor 10.
The high frequency generated from the magnetron 4 heats the cavity 8 through the rotating antenna 9.

[0004]

However, in the conventional microwave oven as described above, the high frequency is supplied to only one predetermined direction in the upper or lower part of the cavity 1 to heat the food and drink 8, so that the cooking is performed. There is a problem that an appropriate cooking effect cannot be obtained because a heating deviation occurs depending on foods to be eaten.

That is, in the case of the turntable system, since high frequency waves are incident from the upper part to the lower part of the cavity 1, there is a portion that comes out of the juice in a dish such as a boiled dish or a boiled dish in which the juice does not entirely cover the food or drink. Firstly, water is excessively heated to evaporate excessively, and in extreme cases, food and drink may be burned. In addition, a bottom-feeding-rotating antenna system in which high frequency waves are incident from the lower part to the upper part of the cavity 1 is adopted. In such a microwave oven, there is a problem that a heating deviation is extremely caused by cooking, for example, a center portion of food and drink is heated first, and a problem that manufacturing cost is increased by using another ceramic plate.

Accordingly, it is an object of the present invention to eliminate the heating deviation caused by food by dividing the high frequency generated from the magnetron into the upper part or the lower part of the cavity according to the kind of food to be cooked. An object of the present invention is to provide a high-frequency direction adjusting device capable of improving a cooking effect.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide an upper high-frequency input hole and a lower high-frequency input hole formed on a cavity side wall and a lower surface of a microwave oven, respectively. A high-frequency guide that is installed to reach the hole and guides the high-frequency wave generated from the magnetron to the cavity, and the high-frequency wave guided by the high-frequency guide is an upper high-frequency input hole or a lower portion of the cavity depending on the type of food to be cooked. This is achieved by providing a high-frequency direction control device for a microwave oven, comprising a high-frequency direction control mechanism for selectively opening or shutting off a high-frequency path so that the high-frequency path can be separated into the high-frequency input hole.

[0008]

According to the apparatus of the present invention configured as described above,
According to the type of food to be cooked, the high frequency generated from the magnetron is selectively divided into the upper or lower part of the cavity and flows in. To eliminate problems such as heating deviations caused by different types of food and beverages generated in a microwave oven and excessive water evaporation on the food surface, improve the cooking effect, and reduce production costs by not using ceramic plates. There is.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a microwave oven according to the present invention; 1 of the accompanying drawings is a longitudinal sectional view of a microwave oven showing the structure of the apparatus of the present invention, FIG. 2 is a perspective view of the inside of a cavity of a microwave oven to which the present invention is applied, and FIGS. 3 and 4 are used in the present invention. It is operation | movement explanatory drawing and sectional drawing of a high frequency passage opening / closing mechanism. As shown in these drawings, the high-frequency direction adjusting device for a microwave oven according to the present invention includes an upper high-frequency input hole 21 and a lower high-frequency input hole 22 formed on the side wall and lower surface of a cavity 1 of a microwave oven, respectively . An auxiliary input hole 23 formed below the upper high-frequency input hole 21 ;
From the high-frequency input hole 21 to the auxiliary input hole 23
Is location, and the first high-frequency guide 30a for guiding the high frequency generated from the magnetron 4 to the carry <br/> Activity 1, wherein
From the lower high-frequency input hole 22 to the auxiliary input hole 23
It is installed and controls the high frequency generated from the magnetron 4.
A second high-frequency guide 30b for guiding to the cavity 1;
The first high-frequency guide is located at the first high-frequency guide.
A first rotation blocking plate 41a for deploying the
First drive motor for rotationally driving the rotation blocking plate 41a
42a, a first high-frequency passage switch,
The second high-frequency guide,
The second rotation blocking plate 41b for opening and closing the 30b and the rotation
Second drive motor 42 for rotating and driving blocking plate 41b
b) and a second high-frequency passage switch constituted by b.
You.

The rotation blocking plates 41a and 41b are driven in a drive mode.
90 degrees by the driving of the heaters 42a and 42b.
The frequency guides 30a and 30b are opened and closed. The driving motor 42a, 42b is fixed by a bracket 43 on the outside of the high frequency guide 30a, 30b, are electrically connected to the cooking selection circuit section of a microwave oven driving circuit unit, automatically operated by food type While the rotation blocking plates 41a, 41
b a is actuated and the vertical portion traveling direction of the high-frequency by food type is configured to determine automatically.

The auxiliary high-frequency input hole 23 has a cavity.
1 formed at the lower part of the upper high frequency input hole 21 for food and drink.
By making high frequency radiation from the side,
Make up for the lack of heating in the section. Here, it is preferable that at least one auxiliary high frequency input hole 23 is formed.

In the drawings, the same parts as those of the conventional configuration are denoted by the same reference numerals. Hereinafter, the operation and effect of the high frequency direction adjusting apparatus for a microwave oven according to the present invention will be described. First, when a dish with a large amount of juice, such as a boiled dish or a boiled dish, is selected, the high-frequency guides 30a, 3
First provided to 0b, together with the first high-frequency guide 30a is interrupted by the action of the second high frequency path switch first
When the second high frequency guide 30b is opened, the high frequency is radiated from the lower part of the cavity 1 to the upper part through the high frequency guide 30b, so that the food is heated from the bottom. At this time, through the auxiliary high-frequency input hole 23,
The high frequency is radiated inside the cavity.

Therefore, it is possible to solve the problem that the water of the food is excessively evaporated or the food is burned. On the other hand, when a food without juice, for example, a dish that requires overall heating is selected, the shut-off plate 41b of the second high-frequency passage switch rotates to shut off the high-frequency guide 30b, and the first high-frequency guide 30b is turned off .
Since the high- frequency guide 30a is opened by the action of the high- frequency passage switch, most of the high-frequency waves are radiated from the upper part to the lower part through the upper high-frequency input hole 21 of the cavity 1.
Also at this time, the high frequency
Is emitted inside the cavity.

That is, the food can be heated uniformly without heating deviation due to the food.

[0015]

As described above in detail, according to the apparatus of the present invention, the high frequency generated from the magnetron is selectively divided into the upper part or the lower part of the cavity and inputted according to the kind of the food and the like. Eliminates the problem of heating deviation due to food type and excessive water evaporation on the food surface generated in the microwave oven that adopts a high-frequency feeding structure that inputs in only one fixed direction and improves the cooking effect In addition, there is an effect of reducing the manufacturing cost by removing the ceramic plate. In particular, according to the invention,
The frequency input hole includes a first high-frequency path switch and a second high-frequency path switch.
Is it always open regardless of the opening / closing operation of the passage switch?
In addition, certain types of food and drinks are placed on the upper and auxiliary high frequency inputs.
Through the holes and low and wide types of food and drink
Radiates high frequency through the
The cooking effect is improved, and the first and second heights are improved.
Magnetron even if the frequency switch is closed at the same time
The high frequency generated from the cavity is radiated into the cavity,
Frequency returns to magnetron and is fatal to magnetron
There is no need to worry.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a microwave oven according to the present invention.

FIG. 2 is a perspective view showing the inside of a cavity of a microwave oven according to the present invention.

FIG. 3 is an explanatory diagram of the operation of the high-frequency passage opening / closing device according to the present invention.

FIG. 4 is a sectional view showing the structure of the high-frequency passage opening and closing device according to the present invention.

FIG. 5 is a structural sectional view of a conventional turntable type microwave oven.

FIG. 6 is a structural sectional view of a conventional bottom feeding-rotating antenna type microwave oven.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cavity 4 ... Magnetron 21 ... Upper high frequency input hole 22 ... Lower high frequency input hole 23 ... Auxiliary high frequency input hole 30 ... High frequency guide 30a, 30b ... High frequency traveling path 41 ... Rotation blocking plate 42 ... Drive motor

Claims (1)

(57) [Claims] An upper high-frequency input hole and a lower high-frequency input hole formed in a side wall and a lower surface of a cavity of the microwave oven; and a lower portion of the upper high-frequency input hole in the cavity.
An auxiliary high frequency input hole, the upper from the high frequency input hole is disposed so as to extend to the auxiliary high frequency input aperture, a first high-frequency guide for guiding the high frequency generated from the magnetron to the cavity, the auxiliary frequency from said lower radio frequency input hole To the input hole
Installed in the
A second high-frequency guide for guiding the first high-frequency guide;
First rotation blocking plate for opening and closing a guide and the rotation blocking plate
A first drive motor configured to rotate the first drive motor
The high-frequency passage opening and closing means and the second high-frequency guide,
A second rotation blocking plate for opening and closing a guide and the rotation blocking plate
A second drive motor configured to rotate the second drive motor
High frequency passage opening / closing means , wherein the first high frequency passage opening / closing means and the second high frequency passage opening / closing means are provided .
The closing means alternates the first and second high-frequency guides or
Operates so as to open and close at the same time, the first high-frequency channel opening and closing means and the second high-frequency passage opening
Generated from the magnetron regardless of the opening / closing operation of the closing means
High-frequency wave enters the cavity through the auxiliary high-frequency input hole.
A high-frequency direction adjusting device for a microwave oven, which is guided .