KR20080022795A - Microwave oven with duct device - Google Patents

Abstract

A microwave oven equipped with a duct device is provide to prevent components in a machine room from performing an abnormal operation and to supply a cooking room with fresh air by allowing steam generated in the cooking room to be discharged without passing through the machine room. A microwave oven comprises a cooling fan(150), an intake part(130) and a duct device. The cooling fan is installed at a machine room(121) to supply the machine room with external air. The intake part is formed between the cooking room and the machine room. The duct device has a first side connected with the cooling fan and a second side extending to a side of the intake part. The cooling fan includes a wing portion(152) for drawing in external air and a wind guide(154) for guiding external air to the machine room. The wind guide extends to the side of the intake part to directly guide the external air to the cooking room.

Description

Microwave oven with ducting device {MICROWAVE OVEN WITH DUCT DEVICE}

1 is a perspective view showing a microwave oven according to the prior art.

2 is a perspective view showing a microwave oven having a duct apparatus according to an embodiment of the present invention.

3 is a view illustrating the rear of the microwave oven of FIG. 2.

<Explanation of symbols on main parts of the drawings>

110: outer case 111: inner case

120: cooking chamber 121: battlefield

123: partition 130: intake portion

140: magnetron 150: cooling fan

152: wing 154: wind guide

The present invention relates to a microwave oven, and more particularly to a microwave oven having a duct device for connecting between the intake portion of the microwave cooking chamber and the cooling fan of the electrical equipment room.

In general, a microwave oven is a cooking apparatus capable of cooking food using microwaves in a short time, and microwaves generated from a magnetron to which high voltage is applied are irradiated into the food inside the cooking chamber through a waveguide. By vibrating the water molecules contained in the food to generate heat energy, the food is heated and cooked therein.

Such microwave ovens can cook various foods in various ways by appropriately adjusting the microwave output and the time that the microwave is irradiated to the food, and also to heat the already cooked food or to melt the frozen food. Can be used.

1 is a perspective view showing a microwave oven according to the prior art.

Referring to FIG. 1, the microwave oven includes an outer case 10 having a cooking compartment 10a having a front surface open therein, an outer panel 20 and a cooking compartment installed to surround the outside of the outer case 10. A door 30 for opening and closing the opened front surface of 10a), and an operation panel 40 for setting various cooking conditions and for turning on or off the microwave oven.

The tray 50 is placed on the bottom surface of the outer case 10, the food to be cooked is placed, the lower side of the tray 50 is provided with a motor (not shown) for rotating the tray 50.

In addition, an electric field chamber 10b is provided at the side of the cooking chamber 10a, and a magnetron 61 and a high voltage capacitor (not shown) for generating microwaves, and a high voltage transformer for applying a high voltage to the magnetron 61 and the high voltage capacitor ( Devices, such as the cooling fan 64 and the like, are provided in the electric compartment 10b.

Here, the magnetron 61 for generating microwaves is mounted on one sidewall of the cooking chamber 10a of the outer case 10 under the waveguide 65. A communication hole (not shown) for communicating the inside of the cooking chamber 10a and the waveguide 65 is formed at one sidewall of the cooking chamber 10a to which the waveguide 65 is attached.

In this way, the food is placed in the tray 50 placed on the bottom surface of the cooking chamber 10a, and then the operating panel 40 is operated to set cooking conditions and operate the microwave oven. Microwaves are generated in the magnetron 61 due to the high voltage, and the microwaves are guided into the cooking chamber 10a through the waveguide 65 and irradiated to the food placed in the tray 50 so that the food is heated and cooked. do.

At this time, a cooling fan 64 is used for cooling the electrical parts of the cooking chamber 10a and the electrical components of the electric compartment 10b and for venting the cooking chamber 10a. The cooling fan 64 includes a wing 63 for sucking outside air and a wind guide 61 for guiding the outside air to the electric compartment 10b. The air sucked from the outside of the microwave oven through the cooling fan 64 passes through the electric compartment 10b to cool various heating parts in the electric compartment 10b and flows into the cooking compartment through the intake of the cooking compartment 10a. After cooking is performed by the air introduced in this way, hot air or steam in the cooking chamber 10a is discharged out of the microwave oven through the exhaust port of the cooking chamber 10a.

In this case, due to the carelessness of the user, moisture in the cooking chamber 10a may be introduced into the electrical equipment chamber 10b through the intake portion of the cooking chamber 10a, and in this case, failure or leakage of the electrical components may be caused.

In addition, since external air flows into the cooking chamber 10a after passing through the electric chamber 10b, harmful gases generated from the high-temperature electric parts may flow into the cooking chamber 10a to reduce the freshness of the food.

That is, the microwave oven according to the prior art is composed of the basic structure of the cooking chamber (10a) and the electrical equipment chamber (10b) may damage the electrical components due to moisture or high temperature steam that can flow from the cooking chamber (10a). , The external air supplied to the cooking chamber 10a is air that enters through the electric battle chamber 10b, thereby reducing the freshness of the food. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, the microwave oven having a duct apparatus according to the present invention to discharge the high humidity and high temperature steam generated in the cooking chamber without going through the electrical equipment room to prevent abnormal operation of the electrical equipment parts The aim is to provide a microwave oven that can supply fresh air to the cooking chamber.

A microwave oven having a duct apparatus according to the present invention for achieving the above object is: a cooling fan installed in the electrical equipment room for supplying external air to the electrical equipment room, the intake unit formed on the inner wall between the cooking chamber and the electrical equipment room , And one side is connected to the cooling fan, and the other side includes a duct device extending to the intake portion side.

Preferably, the cooling fan comprises a wing portion for sucking the outside air, and a wind guide for guiding the outside air to the electrical chamber, the duct device is characterized in that formed by extending the wind guide.

Preferably, the suction unit is formed on the inner wall close to the cooling fan.

Microwave oven having a duct device according to the present invention having the configuration as described above is equipped with a duct device between the intake portion and the cooling fan of the cooking chamber, the electrical components of the electrical components due to moisture or high temperature steam that can be introduced from the cooking chamber It is possible to prevent abnormal operation and to supply fresher air to the cooking chamber without passing through the battlefield.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a microwave oven having a duct apparatus according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

2 is a perspective view showing a microwave oven having a duct apparatus according to an embodiment of the present invention, Figure 3 is a view showing the back of the microwave oven of FIG.

2 and 3, the microwave oven includes an inner case 111 forming the cooking chamber 120, and an outer case 110 forming the external shape of the microwave oven, including the cooking chamber 120 and the electric chamber 121. It is configured to include). In the cooking chamber 120 and the electric chamber 121, spaces are divided with the inner wall 123 interposed therebetween, and the intake unit 130 having a hole formed in the inner wall 123 has air in the electric chamber 121. To flow.

A cooling fan 150 is installed at one side of the electrical equipment chamber 121 to supply external air to the electrical equipment chamber 121 to cool the electrical equipment chamber 121 and the cooking chamber 120. The cooling fan 150 includes a wing 152 for sucking outside air and a wind guide 154 extending toward the intake 130.

Conventional wind guides are formed to have a short thickness to guide the outside air to the electric chamber 121, but the wind guide 154 of the present invention extends and deforms the conventional wind guide 154 to the intake unit 130 to the outside air. Guide to the cooking chamber 120. That is, some of the external air passing through the wind guide 154 is introduced directly into the cooking chamber 120 without passing through the electrical chamber 121, thereby supplying fresh air to the cooking chamber 120, and the rest of the electrical chamber 121. It is supplied to the to cool the parts of the electrical chamber 121.

The wind guide 154 as described above does not need to provide a separate duct device separately, there is an effect that the cost is reduced.

Here, the intake unit 130 is preferably formed on the partition wall 123 close to the cooling fan 150 so that the length of the wind guide 154 is short. This is because the wind guide 154 uses the space in the electrical equipment chamber 121 to a minimum and does not disturb the flow of air in the electrical equipment chamber 121.

The structure of the duct device connected to the intake unit 130 from the cooling fan 150 may vary depending on the arrangement of electrical components inside the electric chamber 121, and is installed to smoothly flow air or steam. It is preferable.

The size, thickness, etc. of the duct apparatus as described above may vary depending on the specifications and the size of the microwave oven. Since the configuration of the embodiment is well known to those skilled in the art to which the present invention pertains, a detailed description of such a structure Omit.

Hereinafter, the operation of the microwave oven having the duct apparatus according to the present invention configured as described above with reference to the accompanying drawings as follows.

First, the wing 152 of the cooling fan 150 sucks air into the microwave oven from the outside. The sucked air is moved to the inlet port 130 through the wind guide 154. Part of the air is introduced into the cooking chamber 120 through the inlet 130, and part of the cooling of the electrical components in the electric chamber 121.

Through this, the air flowing into the cooking chamber 120 does not go through the electric chamber 121, but directly enters the cooking chamber 120 through the wind guide 154, to provide fresh air to the cooking chamber 120. Can be.

In addition, when the cooling fan 150 stops and the air flow in the reverse direction from the cooking chamber 120 to the electrical equipment chamber 121 occurs, the steam or air inside the cooking chamber 120 is supplied to the electrical equipment chamber 121 through the wind guide 154. It is discharged to outside without going through).

Although the present invention has been described with reference to the embodiments illustrated in the drawings, it is merely exemplary, and various modifications and equivalent other embodiments may be made by those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the microwave oven having the duct apparatus according to the present invention, unlike the conventional invention, can prevent the abnormal operation of the electrical components due to moisture or high temperature steam that can be introduced from the cooking chamber. In addition, the present invention can supply fresh air to the cooking chamber by directly supplying the outside air into the cooking chamber through the duct apparatus.

In addition, the present invention can use the conventional wind guide as a duct device has the effect of reducing the cost.

Claims (3)

A cooling fan installed in an electrical equipment room to supply external air to the electrical equipment room; An air intake unit formed on an inner wall between the cooking chamber and the electrical equipment chamber; And One side is connected to the cooling fan, the other side is provided with a duct device characterized in that it comprises a duct device extending to the intake side. The method of claim 1, The cooling fan includes a wing portion for sucking the outside air, and a wind guide for guiding the outside air to the electric chamber, the duct device is a microwave oven having a duct device, characterized in that formed by extending the wind guide. The method according to claim 1 or 2, And the suction part is formed on an inner wall close to the cooling fan.

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