KR100582295B1 - A structure of Back-plate for Microwave oven - Google Patents

Abstract

The present invention relates to a microwave oven, and more particularly, to a structure in which air discharged through an exhaust port of a back plate is blown from side to side by an exhaust guide bracket. In the back plate structure of the microwave oven according to the present invention, the air discharged through the exhaust port 110 outside the exhaust port 110 of the back plate 100 of the microwave oven to allow the air inside the electric chamber to be discharged to the rear of the microwave oven. It is characterized in that the exhaust guide bracket 200 for guiding the air blown from side to side. In this case, there is an advantage that the air discharged to the exhaust port 110 is prevented from flowing upward.

Microwave Oven, Back Plate, Exhaust Port, Exhaust Guide Bracket

Description

Structure of Back-plate for Microwave Oven

1 is a perspective view showing the configuration of a typical commercial microwave oven.

Figure 2 is a partial perspective view showing a back plate of a microwave oven according to the prior art.

Figure 3 is a perspective view of the back plate of the microwave oven according to the present invention.

Figure 4 is a partial perspective view showing a state in which the exhaust guide bracket is formed outside the exhaust port of the microwave oven back plate of the present invention.

5 is a perspective view showing the exhaust guide bracket of FIG.

Explanation of symbols on the main parts of the drawings

100: back plate 110: exhaust port

200: exhaust guide bracket 210: flat part

230: bend portion 250: fixed end

270: adhesion preventing protrusion 300: forming part

The present invention relates to a microwave oven, and more particularly, to a structure such that the air discharged through the exhaust port of the back plate is blown from side to side by the exhaust guide bracket.

2. Description of the Related Art In general, a microwave oven is a device for cooking food by generating microwave waves in a magnetron by supplying electric current, and irradiating the microwaves with heated objects such as food.

Such a microwave oven is classified into a household microwave oven having a small magnetron and a commercial microwave oven having a large or a plurality of magnetrons.

In addition, the microwave oven is classified according to the heating method of food, the home microwave oven is generally a glass tray method of rotating the food, commercial microwave oven is mainly used a stirrer pan method to scatter the microwave wave is scanned.

On the other hand, commercial microwave ovens are commonly used in convenience stores, which are frequently used, or in restaurants that require food to be cooked in a short time, and therefore, a relatively high output is required.

Hereinafter, the configuration of a commercial microwave oven as described above (hereinafter referred to as a microwave oven) will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing the configuration of a typical commercial microwave oven, Figure 2 is a partial perspective view showing a back plate of a microwave oven according to the prior art.

First, referring to FIG. 1, a configuration of a general microwave oven is as follows.

The microwave oven is composed of an outer case forming an exterior, a cavity 20, and an electrical equipment room 30. And the door 40 is installed on the front of the cavity 20 is included.

The outer case forms the appearance of the microwave oven and at the same time serves to protect the cavity 20 installed therein. Therefore, the outer case is generally made of an iron plate having a predetermined strength.

The outer case is installed around the cavity 20, the upper plate (Upper Plate 11) to cover the upper and both sides of the cavity 20 at the same time, the base plate (Base Plate 13), the lower surface to protect the It consists of a front plate (Front Plate 15) to form the front of the beater 20, and a back plate (Back Plate 17) to protect the back of the cavity (20).

In addition, the back plate 17 is perforated with an exhaust port 17a to be described below.

The cavity 20 is a space in which food, such as food, is cooked, and is composed of a substantially rectangular box opened forward. That is, food is fed through the opened front, and cooked food is taken out. This cavity 20 is tightly fixed to the upper surface of the subplate which will be described below.

The electrical equipment room 30 is a space formed on the inner right side of the outer case, and a plurality of electrical equipments for operating the cavity 20 are installed.

In the electric chamber 30, a plurality of electric components such as a transformer 31, a magnetron 33, a blower fan 35, and a capacitor (not shown in the capacitor) are installed. In addition, an exhaust duct 37 for discharging the air inside the electric chamber 30 to the outside of the microwave oven is installed in the electric chamber 30. And the bottom of the electric chamber 30 as described above is made by the sub-plate (39).

Meanwhile, the above-mentioned plurality of electric components, in particular, the transformer 31 and the magnetron 33 serve to generate microwave waves that are scanned into the cavity 20. In this process, the electric components are subjected to high temperature heat. It will cause fever. Therefore, the temperature of the electrical equipment room 30 increases while cooking food.

In order to cool the electric chamber 30 heated as described above, the outside air must be sucked, which is performed by the blower fan 35.

Meanwhile, the back surface of the back plate 17 will be described in more detail with reference to FIG. 2.

Upper and lower exhaust pipes 17a 'and lower exhaust pipes 17a " ', 17b') are fixed respectively.

The exhaust brackets 17b 'and 17b' 'have a substantially trapezoidal shape, and the upper surface thereof is opened upward. Therefore, the air discharged through the exhaust ports 17a 'and 17a' 'is guided upward by the exhaust brackets 17b' and 17b ''.

However, the above conventional technologies have the following problems.

There is a case where a two-stage structure, that is, a microwave oven or an oven is placed on the upper side of the microwave oven, where the heated air discharged from the lower microwave oven is directed to the upper microwave oven. In this case, a problem occurs in that the upper microwave oven is heated by the air in the lower microwave oven.

In particular, the air of the lower microwave oven heats the power cord of the upper microwave oven, so that the power cord may be burned out. That is, the upper microwave oven does not operate normally.

Therefore, an object of the present invention is to solve the problems in the prior art as described above, and to provide a back plate structure of a microwave oven in which air discharged to the rear is exhausted from side to side.

The back plate structure of the microwave oven of the present invention for achieving the above object, in the back plate of the microwave oven is formed with a perforated exhaust port for discharging the interior air inside the electric chamber rear; An exhaust guide bracket is formed outside the exhaust port of the back plate to guide the air discharged through the exhaust port to blow left and right.

The exhaust guide bracket is preferably formed to be spaced apart from the outer surface of the back plate by a predetermined distance.

In addition, the outer surface of the exhaust guide bracket is preferably formed in the adhesion preventing projection to prevent the exhaust guide bracket is in close contact with the wall surface.

In addition, the back plate is preferably formed with a forming portion for preventing the back plate is in close contact with the wall surface, the forming portion is most preferably formed at a height corresponding to the outer surface of the exhaust guide bracket.

In this case, since the air discharged through the exhaust port of the back plate is guided left and right by the exhaust guide bracket, there is an advantage that the heating of the microwave oven upper product is prevented.

Hereinafter, the back plate structure of the present invention as described above will be described in more detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a back plate of the microwave oven according to the present invention, Figure 4 is a partial perspective view showing a state in which the exhaust guide bracket is formed outside the exhaust port of the microwave back plate of the present invention. 5 is a perspective view illustrating the exhaust guide bracket of FIG. 4.

First, the microwave oven is composed of an outer case forming an exterior, a cavity into which food to be cooked is put, and an electrical equipment room in which a plurality of electrical components for controlling the cavity are installed. And a back plate is installed on the back of the cavity.

3 and 4, the back plate 100 according to the present invention is formed in a substantially rectangular plate shape. Although not shown in front of the back plate 100, the back of the cavity is in close contact. That is, the back of the cavity is protected by the back plate 100. In addition, the back plate 100 also functions to simultaneously form the appearance of the microwave oven. For this function, the back plate 100 is easily manufactured from sheet metal having a predetermined strength.

Sheet metal material is produced by inserting the iron plate in the press in the state where the mold is installed and then punched, the back plate 100 corresponds to the sheet metal material.

An exhaust port 110 is formed in the upper left rear side of the back plate 100. Although not shown, the exhaust port 110 communicates with the exhaust duct outlet inside the electric compartment. That is, the air guided through the exhaust duct of the electric compartment is discharged to the rear of the back plate 100 through the exhaust port 110.

An exhaust guide bracket 200 is formed outside the exhaust port 110.

The configuration of the exhaust guide bracket 200 will be described with reference to FIG. 5.

The exhaust guide bracket 200 includes a flat portion 210, a bent portion 230, and a fixed end 250.

First, the flat part 210 forms the basis of the exhaust guide bracket 200 and has an approximately rectangular shape. The flat part 210 covers the outer surface of the exhaust port 110 at a position spaced a predetermined distance apart. As such, the plane portion 210 is spaced apart from the exhaust port 110 so that the air discharged to the exhaust port 110 is easily discharged.

On the other hand, the flat portion 210 preferably corresponds to the exhaust port 110, at least the flat portion 210 should be wider than the exhaust port (110). If the size of the flat portion 210 is smaller than the exhaust port 110, the exhaust port 110 is exposed to the outside as well as the air discharged from the exhaust port 110 is blown upwards. This is undesirable because it does not overcome the problems in the prior art.

It is apparent that the shape of the flat part 210 is not limited to the above-mentioned rectangle, and it is preferable that the flat part 210 is interlocked by the structure of the exhaust port 110.

At the upper and lower ends of the flat portion 210 as described above, the bent portion 230 is bent downward. The bent portion 230 is such that the flat portion 210 has a predetermined height. Therefore, the planar portion 210 is spaced apart from the exhaust port 110 of the back plate 100 by the size of the bent portion 230.

The lower end of the bent portion 230 has a fixed end 250 is bent again.

The fixed end 250 allows the exhaust guide bracket 200 to be tightly fixed to the rear surface of the back plate 100.

Meanwhile, an adhesion preventing protrusion 270 protrudes from an outer surface of the exhaust guide bracket 200, and more specifically, the flat portion 210.

The adhesion preventing protrusion 270 is to prevent the outer surface of the exhaust guide bracket 200 is in close contact with the inner wall surface of the kitchen furniture when the microwave oven is installed in the kitchen furniture. These adhesion preventing projections 270 are formed on the left and right sides of the flat portion 210, it is obvious that can be composed of a singular or two or more, depending on the designer's choice.

Looking at the process of forming the exhaust guide bracket 200 is configured as described above are as follows.

First, a mold having a shape of the exhaust guide bracket 200 is manufactured, and the manufactured mold is installed in a press. Then, when the iron plate is inserted into the press in the state where the mold is installed and punched out, the exhaust guide bracket 200 having the above configuration is completed. However, the exhaust guide bracket 200 may be made by bending a steel plate of a predetermined size several times.

In addition, the exhaust guide bracket 200 may be made of synthetic resin. That is, after injecting the synthetic resin raw material into the mold, the solidification step may be provided to the exhaust guide bracket 200 of the above-described structure.

As described above, the exhaust guide bracket 200 is fixed to the rear surface of the back plate 100, more specifically, to the outside of the exhaust port 110. That is, when the exhaust guide bracket 200 is brought into close contact with the exhaust port 110, and the fixed end 250 is spot welded, the exhaust guide bracket 200 is formed outside the exhaust port 110 of the back plate 100. It is firmly fixed.

Of course, the exhaust guide bracket 200 is fixed by spot welding is only one embodiment, it is natural that it can be fixed by a variety of methods, for example, fixing projections and fixing grooves. In addition, when the exhaust guide bracket 200 is made of synthetic resin, welding may be impossible and a fixing member such as an adhesive or a double-sided tape may be required.

On the other hand, a forming part (Forming 300) is protrudingly formed in the substantially right middle portion of the back plate 100.

The forming part 300 protrudes rearward from the outer surface of the back plate 100 and is integrally formed with the back plate 100. However, the forming unit 300 may be formed by fixing a separate member to the outer surface of the back plate 100.

The forming unit 300 has a height corresponding to the outer surface of the exhaust guide bracket 200, more precisely, the adhesion preventing protrusion 270. This is when the microwave oven is installed in the kitchen furniture in the state in which only the exhaust guide bracket 200 is formed, only the adhesion preventing projection 270 of the exhaust guide bracket 200 is in close contact with the inner wall surface of the kitchen furniture so that the front of the microwave oven is obliquely Can be. Therefore, when the forming unit 300 is further formed, it is possible to maintain a flat state of the microwave oven. That is, the adhesion preventing protrusion 270 and the forming unit 300 of the exhaust guide bracket 200 is in close contact with the inner wall surface of the kitchen furniture.

In addition, the forming unit 300 forms a predetermined gap between the outer surface of the back plate 100 and the inner wall surface of the kitchen furniture. This interval also has a function to facilitate the discharge of air blown from side to side by the exhaust guide bracket 200.

As described above, it can be seen that the present invention has a basic idea to form an exhaust guide bracket for guiding the discharged air to blow left and right outside the exhaust port through which the air inside the microwave is discharged. Therefore, it is apparent that more modifications are possible to those skilled in the art within the scope of the basic idea of the present invention.

According to the back plate structure of the microwave oven of the present invention as described above, the following effects are expected.                     

The air discharged through the exhaust port of the back plate hits the exhaust guide bracket and is blown to the left and right instead of upward. In this case, when the microwave oven is used in two stages, that is, even if another microwave oven is installed above the microwave oven, the heated air discharged from the lower microwave oven does not flow into the upper microwave oven. Therefore, there is an advantage that the upper microwave oven is prevented from being heated by hot air generated in the lower microwave oven.

As described above, when the air of the lower microwave oven does not rise to the upper microwave oven, there is also an advantage that the power cord of the upper microwave oven is prevented from being damaged.

And if the adhesion preventing projection to the forming portion on the outer surface of the back plate, the front of the microwave oven to be installed in the kitchen furniture to maintain a flat state. In this manner, the appearance of the microwave oven is improved, and the advantage of improving the purchase desire of the product is also expected.

In addition, when the back plate is spaced apart from the inner wall surface of the kitchen furniture by the adhesion preventing projection to the forming portion, there is an advantage that the air discharged through the exhaust port is more easily discharged.

Claims (5)

In the back plate of the microwave oven is formed in the perforated exhaust port for discharging the air inside the electric chamber behind the microwave oven; An exhaust guide bracket for guiding air discharged through the exhaust port to the left and right sides of the exhaust port outside the back plate; An adhesion preventing protrusion formed on an outer surface of the exhaust guide bracket so that the exhaust guide bracket does not adhere to the wall surface; And And a forming unit formed at a height corresponding to an outer surface of the exhaust guide bracket and further formed on the back plate so as not to be in close contact with a wall surface. The method of claim 1, The forming unit is formed integrally with the back plate or the back plate structure of the microwave oven, characterized in that fixed to the outer surface of the back plate as a separate member. delete delete delete

Images