KR100209809B1 - Microwave oven - Google Patents

Abstract

The present invention discloses a microwave oven.

According to the present invention, there is provided a cabinet which is divided into a cooking chamber and a driving chamber of a substantially rectangular shape for cooking food, a heater provided on an upper plate of the cooking chamber, and a container installed on the bottom surface of the cooking chamber to contain food. In a microwave oven including a tray to be raised, the inner surface of the cooking chamber is characterized in that the auxiliary heating means for partially heating the food contained in the container is provided, on the upper plate of the cooking chamber during cooking of food by heating Through the provided heater and the auxiliary heating means that can be partially provided in the cooking chamber, uniform cooking can be performed regardless of the shape of the food, and in particular, the environment inside the cooking chamber can be maintained comfortably. Therefore, there is an effect that can further improve the reliability of the device, that is, the microwave oven employing it.

Description

microwave

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly to a microwave oven employing a heater provided for cooking food in various ways.

In general, a microwave oven cooks food with frictional heat generated by molecular motion by irradiating food with microwaves that are oscillated from a magnetron.

As shown in FIGS. 1 and 2, the inside of the cabinet Ca is separated into a cavity Cv and a drive chamber Dr of a substantially rectangular shape for cooking food Fo. It is composed.

In addition, a tray Tr in which a vessel Ve is placed on the bottom of the cooking chamber Cv, and a tray motor Tm for rotating the tray Tr. Are mounted respectively.

In addition, a magnetron Ma and a high-voltage transformer Ht for oscillating high frequency are provided in the drive chamber Dr of the cabinet Ca, respectively, and the high frequency oscillated from the magnetron Ma is dispersed in the cooking chamber Cv. A wave guide (Wg) is installed to cool the air, and a cooling fan assembly (Cf) is installed to cool them or blow air into the cooking chamber Cv.

On the other hand, the microwave oven is a heater (heater) that can be cooked in various ways depending on the type of food (Fo) in the radio wave dispersion method using a high frequency of the magnetron (Ma).

That is, the high frequency oscillates from the magnetron Ma of the driving chamber Dr and is dispersed into the cooking chamber Cv through the wave guide Wg, and the food Fo is cooked, and according to the type of food Fo, FIG. As shown in the drawing, the heater 10 supported on the upper plate 1 of the cooking chamber Cv may be selectively operated to cook conveniently and quickly.

However, in such a microwave oven, the heat generated by the heater 10 in the process of cooking the food Fo by the heating method by operating the heater 10 supported on the upper plate 1 of the cooking chamber Cv. Since it is sprayed downward constantly, the problem that the partially cooked portion and the uncooked portion is generated according to the shape of the food (Fo) has been caused as a result of reducing the reliability of the product.

The present invention was created to solve such a conventional problem, to provide a microwave oven that can improve the reliability of the product by being able to uniformly cook the food in the process of heating food food through the heater. There is this.

In order to achieve the above object, a microwave oven according to the present invention includes a cabinet, the inside of which is divided into a cooking chamber and a driving chamber of a substantially rectangular shape for cooking food, a heater provided on an upper plate of the cooking chamber, and A microwave oven comprising a tray installed on a bottom surface of a cooking chamber and holding a container in which food is placed, wherein the inner surface of the cooking chamber is provided with auxiliary heating means for partially heating the food contained in the container. do.

1 is a perspective view showing a typical microwave oven

2 is a cross-sectional view of FIG.

Figure 3 is an excerpt cross-sectional view showing a coupling structure of a common heater.

4 is a perspective view of a microwave oven according to the present invention;

5 is a front view of FIG. 4.

6 is a cross-sectional view taken along the line A-A of FIG.

* Explanation of symbols for main parts of the drawings

1: upper plate 10: heater

20: rear plate 30: (multiple) outlet

40: (bar) heater 50: insulation cover

51: Spherical Cv: Cooking Room

Ma: Magnetron Fo: Food

Ve: Container

Such a characteristic configuration and the resulting effects of the present invention will become more apparent from the following detailed description of the invention with reference to the accompanying drawings.

4 is a perspective view of a microwave oven according to the present invention, FIG. 5 is a front view, and FIG. 6 is a sectional view taken along the line A-A of FIG. Hereinafter, a description will be given with reference to FIGS. 1 and 2.

First, referring to FIGS. 1 and 2, the interior of the cabinet Ca is separated into a substantially rectangular cooking chamber Cv and a driving chamber Dr for cooking food Fo. do.

In addition, a tray Tr in which a vessel Ve is placed on the bottom of the cooking chamber Cv, and a tray motor Tm for rotating the tray Tr. Are mounted respectively. At this time, a heater 10 for cooking food Fo by heating is supported on the upper plate 1 of the cooking chamber Cv.

On the other hand, in the cooking chamber (Cv) is provided with auxiliary heating means for partially heating the food (Fo) contained in the container (Ve) in addition to the heating through the heater 10 in accordance with the features of the present invention.

Looking at the detailed structure of such an auxiliary heating means, the outlet 30 connected to the external power source (not shown) is provided at two or more predetermined intervals in the center inner surface of the rear plate 20 of the cooking chamber (Cv).

At this time, the outlet 30 is preferably provided about three places as shown. That is, it will be most appropriate to be provided at positions corresponding to the central portion and both sides with respect to the container Ve.

On the other hand, as the outlet 30 described above, bar-shaped heaters 40 are selectively coupled to each other, and the heaters 40 are coupled to the outlets 30 and positioned long toward the front of the cooking chamber Cv. do.

In this case, all of the heaters 40 may be coupled to the outlet 30 or partially, that is, partially coupled according to the shape of the food Fo.

The outlet 30 described above is exposed to the inside of the cooking chamber Cv when the heater 40 is not coupled. When such an outlet 30 is exposed to the inside of the cooking chamber Cv, electric field concentration may be caused by high frequency oscillation through the magnetron Ma, and thus, a short may occur.

Therefore, the outlet 30 should not be exposed to the inside of the cooking chamber Cv when the heater 40 is not coupled. To this end, the insulation cover 50 is coupled to the outlet 30 so that the heater 40 is not exposed to the inside of the cooking chamber Cv without being coupled.

Such an insulating cover 50 is detachably installed in the outlet 30, in particular, the outer surface has a spherical surface 51 inclined at a predetermined curvature.

In this case, forming the insulating cover 50 into the spherical surface 51 may cook food Fo more effectively when the high frequency oscillated through the magnetron Ma is reflected through the spherical surface 51 of the insulating cover 50. Because there is.

On the other hand, it is preferable to coat a platinum catalyst on the outer surface of the insulation cover 50 described above. This is to improve the reflection efficiency of the high frequency oscillated through the magnetron (Ma), as well as to improve the durability.

In addition, it is preferable to further apply an antimicrobial fragrance to the insulating cover 50, in order to maintain a pleasant internal environment at all times by removing odors caused by food in the cooking chamber Cv.

The use state of the microwave oven according to the present invention configured as described above is as follows.

First, when cooking food (Fo) through the magnetron (Ma), since the auxiliary heating means does not drive, each outlet 30 is covered with an insulating cover 50 to expose the outlet 30 to the inside of the cooking chamber (Cv). Do not As a result, it is possible to prevent the electric field concentration phenomenon due to the high frequency.

In addition, since the outer surface of the insulating cover 50 forms a spherical surface 51 having a predetermined curvature, the cooking performance can be improved by improving the reflection efficiency of the high frequency wave.

On the other hand, in performing another cooking example, that is, in cooking through the heater 10, since the heat generated by the heater 10 is sprayed in a constant downward direction, depending on the shape of the food Fo There is a fear that an uncooked portion may occur.

To this end, through the auxiliary heating means, that is, the food (Fo) is coupled to the rod-shaped heater 40 on the outlet 30 corresponding to the relatively unheated portion. Thereby, more heat can be injected through the rod-shaped heater 40 located in close proximity to the food Fo, and consequently, the food Fo with the heater 10 located on the upper plate 1 can be extracted. You can cook evenly.

At this time, the rod-shaped heater 40 may be all or partly coupled to the outlet 30. That is, the shape of the food (Fo) can be different in the state of coupling for shortening the cooking time.

On the other hand, when the rod-shaped heater 40 is not used, the insulating cover 50 is coupled to the outlet 30 and is located inside the cooking chamber Cv, ie, the antibacterial fragrance applied to the insulating cover 50. By removing the odor inside the cooking chamber (Cv) it is possible to maintain a comfortable indoor environment.

According to the microwave oven according to the present invention as described above, uniformity regardless of the shape of the food through the heater provided on the upper plate of the cooking chamber and the auxiliary heating means which can be partially provided in the cooking chamber when cooking the food through heating. One cooking can be performed, and in particular, the environment inside the cooking chamber can be maintained comfortably. Therefore, there is an effect that can further improve the reliability of the device, that is, the microwave oven employing it.

Claims (4)

The cabinet is divided into a cooking chamber and a driving chamber of a substantially rectangular shape for cooking food, a heater provided on the upper plate of the cooking chamber, and a container installed on the bottom surface of the cooking chamber to hold food. In a microwave oven comprising a tray, The inner surface of the cooking chamber (Cv) is provided with an auxiliary heating means for partially heating the food (Fo) contained on the vessel (Ve). According to claim 1, wherein the auxiliary heating means, at least two places on the central surface of the rear plate 20 of the cooking chamber (Cv) at least a predetermined interval, a plurality of outlets connected to an external power source; A rod-shaped heater 40 that is selectively coupled to the outlet 30 and generates heat, and is elongated toward the front of the cooking chamber Cv; And an insulating cover (50) detachably installed to selectively open the outlet (30). The microwave oven according to claim 2, wherein the insulating cover (50) forms a spherical surface (51) having a predetermined curvature, and a platinum catalyst is coated on the surface thereof. The microwave oven according to claim 2 or 3, wherein an antibacterial fragrance is further applied to the outer surface of the insulating cover (50).