KR20070054463A - A microwave oven - Google Patents

Abstract

A microwave oven is disclosed that can efficiently control a discharge amount of high frequency radiated from a magnetron of an electric equipment room to a cooking chamber through a waveguide. In the microwave oven according to the present invention includes a main body to form a cooking compartment and an electric compartment inside each other, the upper part of the microwave oven having a waveguide for guiding the high frequency radiated from the magnetron of the electric compartment into the cooking chamber, Since the main discharge port and at least one sub discharge port for discharging the high frequency on the cooking chamber side path of the waveguide are provided, most of the high frequency irradiated from the magnetron of the electrical equipment room flows into the cooking chamber to extend the life of the magnetron and reduce the occurrence of arcing. It works.

Description

Microwave {A MICROWAVE OVEN}

1 is an exploded perspective view showing a microwave oven according to the present invention.

2 is a cross-sectional view schematically showing the microwave oven according to the present invention along the line II-II.

3 is a plan view schematically illustrating an upper side of a cooking chamber of a microwave oven according to an embodiment of the present invention.

4 is a plan view schematically illustrating an upper side of a cooking chamber of a microwave oven according to another embodiment of the present invention.

* Description of symbols on the main parts of the drawings *

1..Main body 10 .. Cooking room

14. Compartment 20. Battlefield

22. Magnetron 50. Waveguide

52..Cooking room shade 64,66 ..

The present invention relates to a microwave oven, and more particularly, is installed on the upper wall of the gas oven range to exhaust the exhaust gas or smoke generated from the gas oven range disposed below with the cooking function of the conventional microwave oven to the outside. A microwave oven that also functions.

The wall-mounted microwave oven, called OTR (Over the range), has a cooking compartment and an electrical equipment compartment, which are formed to be partitioned inside the main body, similar to a general microwave oven. An exhaust passage for exhausting the exhaust gas and the smoke generated in the gas oven range, and a ventilation passage for cooling the internal parts of the electrical equipment and ventilating the inside of the cooking chamber, respectively, are provided on the lower and side surfaces thereof. Moreover, this microwave oven is equipped with the waveguide for guiding the high frequency radiated | emitted from an electric field chamber to a cooking chamber in the upper part, and heats and cooks the food in a cooking chamber.

By the way, the conventional microwave oven of this form provided only one high frequency discharge port in the cooking chamber side end part of a waveguide. Therefore, a large amount of the high frequency irradiated from the magnetron of the electric room is not discharged to the discharge port, but returned to the magnetron side, thereby reducing the life of the magnetron or arcing inside the waveguide.

In addition, a dispersing apparatus for uniformly irradiating high frequency to the entire cooking chamber is provided at the discharge port of the cooking chamber side waveguide. The problem of melting the driving motor often occurred.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention to provide a microwave oven that can efficiently control the discharge amount of the high frequency radiated from the magnetron of the electrical equipment chamber through the waveguide.

The microwave oven according to the present invention for achieving the above object is provided with a main body to form a cooking compartment and an electric compartment inside each other, the upper portion is provided with a waveguide for guiding the high frequency radiated from the magnetron of the electric compartment into the cooking chamber. In one microwave oven, a main discharge port and at least one sub discharge port are provided for discharging high frequency on the cooking-side path of the waveguide.

In addition, the main discharge port is provided with a stirrer for dispersing high frequency, the stirrer controls both the main discharge port and the sub discharge port, or selectively controls only one discharge port.

In addition, the discharge ports are provided in the cooking chamber shade formed on the upper side of the cooking chamber, in particular, the sub discharge port is provided in an arc shape.

Hereinafter, a microwave oven according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a microwave oven according to the present invention, Figure 2 is a cross-sectional view along the line II-II of FIG. Referring to the drawings, in the microwave oven according to the present invention, a cooking chamber 10 for cooking food and an electric equipment chamber 20 in which various electric parts are installed are formed inside the main body 1 forming the exterior. .

The cooking chamber 10 is open to the front side and is configured to be opened and closed through a door 12 hinged to one side of the main body 10, and a tray 13 which rotates and / or reciprocates to allow food to be cooked evenly on the inner bottom thereof. ).

The electric compartment 20 is partitioned from the cooking compartment 10 through the partition plate 14, and a magnetron 22 for supplying a high frequency to the interior of the cooking compartment 10 and a high voltage applied to the magnetron 22 therein. A high pressure transformer 24 for cooling, and a cooling fan 26 for cooling the inside of the electric compartment 20. In addition, the front of the electric compartment 20 is provided with a control panel 28 provided with a plurality of operation buttons for controlling the function of the microwave oven and a display unit for displaying the operation state.

      In addition, the microwave oven according to the present invention is a gas flow generated in the gas flow path (not shown) located in the lower portion of the main body 1 and a ventilation flow path for cooling the electrical chamber 20 and the ventilation of the cooking chamber 10 Exhaust flow paths for exhausting smoke are provided on the side rear and the bottom of the main body 1.

      The ventilation passage is formed above the control panel 28 so as to communicate with the interior of the electrical equipment room 20, and the front suction opening 31 and the front suction opening 31 to allow the outside air to flow into the interior of the electrical equipment room 20. It is provided with a plurality of through-holes 32 formed in the partition plate 14 so that the air introduced through the cooling to the inside of the electric compartment 20, the flow into the cooking chamber 10. In addition, the ventilation passage is provided with a plurality of through-holes 33 formed on the upper side of the cooking chamber 10 so that the air in the cooking chamber 10 can be discharged to the outside, and the front outlet 34 formed on the front upper side of the cooking chamber 10 side. Equipped. Therefore, when the cooling fan 26 operates, the air introduced into the battlefield chamber 20 through the front suction port 31 is cooled through the through hole 32 of the partition plate 14 after cooling the inside of the battlefield chamber 20. After entering the cooking chamber 10 to vent the cooking chamber 10, it is discharged to the outside through the through hole 33 and the front outlet 34.

      On the other hand, the exhaust flow passage 42 is formed through the space between the exhaust suction inlet 41 formed in the bottom plate of the main body 1, the cooking chamber 10 and the electric chamber 20 and the bottom plate of the main body 42 ), The up and down passages 43 and 44 formed up and down in the outer side of the cooking chamber 10 and the rear of the electric battle chamber 20, and the gas or smoke guided through the two upward passages 43 and 44 to the exhaust fan 45. And upper flow passages 46 and 47 formed on the upper portion of the main body 1 to guide toward the side surface. Accordingly, when the exhaust fan 45 is driven, gas or smoke is sucked through the exhaust inlet 41 to sequentially pass through the lower passage 42, the rising passage 43, 44, and the upper passage 46, 47. Exhaust to the outside.

Moreover, the waveguide 50 for guiding the high frequency irradiated from the magnetron 22 of the electric field chamber 20 to the cooking chamber 10 is provided above the main body 1. The waveguide 50 is formed of an approximately rectangular enclosure so that both ends of the waveguide 50 are positioned at the upper portions of the cooking chamber 10 and the electric chamber 20, respectively, and one end of the electric chamber 20 is connected to the magnetron 22 and the cooking chamber 10 is provided. ) The other end is connected to the high frequency discharge port.

2 is a cross-sectional view schematically showing a microwave oven according to the present invention. Referring to the drawings, the cooking chamber discharge port provided in the waveguide 50 is provided in the cooking chamber shade 52 formed in a circular shape on the upper side of the cooking chamber 10. , The main discharge port 54 and at least one sub discharge port 56. The main discharge port 54 is located in the center of the cooking chamber shade 52 and is a discharge port provided in a conventional microwave oven. Conventionally, only a part of the high frequency radiated from the magnetron 22 through the main discharge port 54 is introduced into the cooking chamber 10. However, in the present invention, at least one sub discharge port 56 in addition to the main discharge port 54 is provided as a waveguide ( By providing it on the path | route of 50, most high frequency radiated from the magnetron 22 can flow into the cooking chamber 10. As shown in FIG. The sub discharge port 56 is provided in the cooking chamber shade 52 similarly to the main discharge port 54, and has a circular arc shape. The arc-shaped sub discharge port 56 has been confirmed through experiments that the effect of introducing a larger amount of high frequency into the cooking chamber 10 than the discharge hole consisting of a rectangular, triangular, a plurality of small through holes and the like.

In addition, according to the present invention, the main discharge port 54 is provided with a high frequency dispersion device for uniformly injecting high frequency into the cooking chamber 10. The high frequency dispersion device includes a motor 62 and a stirrer 64 and is provided in the cooking chamber shade 52 so as not to protrude into the cooking chamber 10. Therefore, the high frequency flowing from the main discharge port 54 into the cooking chamber 10 is diffusely reflected and dispersed in various directions by the rotation of the stirrer 64. At this time, when the tray 13 on which food is placed is rotated at the same time, High frequency is uniformly irradiated throughout the cooking chamber, efficient cooking of the food is achieved.

3 and 4 are plan views schematically illustrating an upper side of a cooking chamber of a microwave oven according to various embodiments of the present disclosure, and FIG. 3 illustrates a stirrer 64 that controls diffuse reflection of only a high frequency discharged from the main discharge port 54. 4 shows a stirrer 66 for controlling to diffusely reflect high frequency emitted from the sub discharge port 56.

That is, the stirrer 64 of FIG. 3 is provided in a disc shape and includes a plurality of slits 65 on the disc, so that all the high frequencies passing through the main discharge port 54 are diffusely reflected and the sub discharge port 56 is closed. High frequency passing through the cooking chamber to freely eject the food evenly, the stirrer 66 of FIG. 4 is formed in a rectangular disk shape and passes through the main discharge port 54 while rotating by a motor (62 of FIG. 2). All of the high frequency is diffusely reflected, and the high frequency passing through the sub discharge port 56 is selectively diffused to effectively cook food in the cooking chamber.

On the other hand, in the present embodiment, the high frequency passing through the main discharge port exemplifies the structure to all diffuse reflection, the present invention is not particularly limited thereto. For example, a structure in which all high frequencies passing through the sub discharge port are diffusely reflected and high frequencies passing through the main discharge port are selectively diffusely reflected, or a high frequency diffuser such as to selectively diffuse both high frequencies passing through the main discharge port and the sub discharge port. The stirrer structure is, of course, capable of various modifications and variations within the equivalent scope of the technical spirit of the present invention and the claims to be described below by those skilled in the art. In addition, in the present invention, an OTR microwave is exemplified as an embodiment, but a general counter top microwave oven (CMO) microwave may be applied through various modifications and modifications as long as a waveguide is provided on the main body to supply high frequency to the cooking chamber. Of course.

As described in detail above, the microwave oven according to the present invention further includes at least one sub discharge port in addition to the main discharge port of the conventional microwave oven, so that most of the high frequencies irradiated from the magnetron of the electric room are introduced into the cooking chamber to extend the life of the magnetron. And it has the effect of reducing the occurrence of arcing.

In addition, the microwave oven according to the present invention may control the high frequency discharged from the main discharge port and the sub discharge port to the cooking chamber to be diffusely reflected throughout the cooking chamber by using a dispersing apparatus, so that efficient cooking of food may be achieved.

Claims (5)

In the microwave oven provided with a main body to form a cooking compartment and an electric compartment inside each other, and the waveguide that guides the high frequency radiated from the magnetron of the electric field into the interior of the cooking chamber, The microwave oven, characterized in that the main discharge port and at least one sub discharge port for discharging high frequency is provided on the cooking chamber side path of the waveguide. The method of claim 1, The main discharge port is provided with a stirrer to disperse high frequency, The stirrer controls both the main discharge port and the sub discharge port. The method of claim 1, The main discharge port is further provided with a stirrer for dispersing high frequency, The stirrer is microwave oven, characterized in that to selectively control only one discharge port. The method according to any one of claims 1 to 3, The sub discharge port is characterized in that it is provided in an arc shape. The method of claim 4, wherein The discharge port is a microwave oven, characterized in that provided in the cooking chamber shade formed embedded in the upper side of the cooking chamber.

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