KR20070054991A - Heating cooker - Google Patents

Abstract

The present invention discloses a heating cooking apparatus capable of preventing the moisture in the cooking chamber from entering the waveguide. The heating cooking apparatus of the present invention includes a cooking chamber having an opening formed at one side thereof so that microwaves can be introduced therein, a waveguide communicating with the opening, and a cover covering the opening at the inside of the cooking chamber. In particular, a sealing member is disposed between one side of the cooking chamber in which the opening is formed and the cover to block moisture from entering the waveguide. Such a sealing member may consist of an O-ring and may be attached to the cover. In addition, one side surface of the cooking chamber in which the opening is formed may include a sealing groove formed around the opening to accommodate a portion of the sealing member. By this configuration, the present invention can prevent the magnetron or the waveguide from being damaged by moisture, thereby improving the reliability of the product.

Description

Heating Cooker {HEATING COOKER}

1 is a front view showing the appearance of the heating cooking apparatus according to the present invention.

Figure 2 is a perspective view showing the configuration of the heating cooking apparatus according to the present invention.

3 is a cross-sectional view showing the configuration of the heating cooking apparatus according to the present invention in the direction I-I in FIG.

Figure 4 is a perspective view showing a partial configuration when viewed from the back of the heating cooking apparatus according to the present invention.

FIG. 5 is a side sectional view when the cover is engaged in FIG. 4; FIG.

Figure 6 is a side cross-sectional view showing a case in which the sealing groove is formed in the cooking chamber back plate in FIG.

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

      10: cooking chamber 14: the back plate

      14a: opening 14b: sealing groove

      20: water supply device 30: steam supply device

      40: superheated steam supply device 51: magnetron

      53: waveguide 60: cover

      70: sealing member

The present invention relates to a heating cooking apparatus, and more particularly, to a heating cooking apparatus for cooking food using steam and microwave together.

Common heating cooking apparatuses used for cooking food include gas ovens and electric ovens that directly heat food using a microwave oven and a heater using friction heat of water molecules due to high frequency as a heat source.

Among them, the microwave oven has many limitations in the types of foods that can be cooked, and the foods are dried and taste deteriorated after cooking. Gas ovens and electric ovens have relatively low density of air and heaters. As a heat transfer medium therebetween, the cooking time is long and the efficiency is low. Therefore, recently, in order to compensate for the disadvantages of the conventional heating cooking apparatus, a heating cooking apparatus (hereinafter, referred to as a 'steam oven') for supplying steam to the cooking chamber to cook food has been developed. In addition, by adding a microwave oven function to the steam oven, cooking by steam and cooking by microwave can be developed to take advantage of each advantage has been developed.

A conventional microwave oven includes a magnetron installed outside the cooking chamber for oscillating high frequency, and a waveguide for guiding the microwaves generated by the magnetron into the cooking chamber. In addition, where the cooking chamber and the waveguide communicate with each other in the cooking chamber, a waveguide cover made of a material capable of transmitting microwaves is installed. The waveguide cover is fixed to the inner side of the cooking chamber through a fastening device such as a screw.

The installation structure of the waveguide cover has no problem in a general microwave oven, but in a microwave oven using steam and microwaves, a problem occurs that steam in the cooking chamber flows into the waveguide. That is, when the steam is supplied into the cooking chamber, the pressure in the cooking chamber is increased, so that steam is introduced into the waveguide through the gap between the inner surface of the cooking chamber and the waveguide. Steam entering the waveguide is cooled and converted to condensate, which can damage the magnetron or rust the inside of the waveguide.

The present invention is to solve such a problem, it is an object of the present invention to provide a heating cooking apparatus that can prevent the moisture in the cooking chamber, such as steam flows into the waveguide.

The heating cooking apparatus according to the present invention for achieving the above object comprises a cooking chamber having an opening formed on one side so that microwaves can be introduced, a waveguide communicating with the opening, and a cover covering the opening inside the cooking chamber. In the heating cooking apparatus, a sealing member is disposed between one side of the cooking chamber in which the opening is formed and the cover to prevent moisture from entering the cooking chamber toward the waveguide.

The sealing member is preferably composed of an O-ring, and is preferably attached to the cover.

One side surface of the cooking chamber may be provided with a sealing groove formed around the opening to accommodate a portion of the sealing member.

In addition, the heating cooking apparatus according to the present invention includes a cooking chamber having an opening formed at one side thereof so that microwaves can be introduced; and a waveguide communicating with the opening, a cover covering the opening at the inside of the cooking chamber; And a sealing member disposed between one side of the cooking compartment and the cover to prevent leakage of the steam supplied from the steam supplying device into the cooking compartment toward the waveguide through the opening. It is characterized by including.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. 1 is a front view showing the appearance of the heating cooking apparatus according to the present invention, Figure 2 is a perspective view showing the configuration of the heating cooking apparatus according to the invention, Figure 3 according to the present invention according to the I-I direction in FIG. It is sectional drawing which shows the structure of a heating cooking apparatus.

As shown in Figures 1 to 3, the heating cooking apparatus according to the present invention has a housing (1) to form an appearance, the cooking chamber 10 is provided inside the housing (1) with a predetermined space with the housing (1) ), A door 2 that opens and closes the front of the open cooking chamber 10, and a control panel 3 provided above the cooking chamber 10 to control the operation of the apparatus. The cooking chamber 10 is a cooking space defined by the top plate 11, the bottom plate 12, both side plates 13, and the back plate 14. The cooking chamber 10 is a space between the cooking chamber 10 and the housing 1. The various components constituting the device are embedded.

The heating cooking apparatus according to the present invention includes a water supply device 20, a steam supply device 30, and a superheated steam supply device 40 to enable cooking using steam.

The water supply device 20 includes a water tank case 21 fixed to the upper surface plate 11 of the cooking chamber, a water tank 22 detachably installed on the water tank case 21, and a water supply of the water tank 22. It consists of a water supply pipe 23 for supplying to the 30, and a water supply pump 24 provided in the water supply pipe 23.

The steam supply device 30 includes a steam container 31 installed in the upper surface plate 11 of the cooking chamber so as to store water supplied through the water supply device 20, and a steam container 31 for evaporating the stored water into steam. It has a steam heater 32 provided therein. A steam supply pipe 33 connecting the steam container 31 and the cooking chamber 10 is connected to one side of the steam container 31 so that the steam in the steam container 31 is supplied toward the cooking chamber 10 by its own pressure. In addition, a drain pipe 34 is connected to the lower portion of the steam container 31 so that the water in the steam container 31 can be drained into the cooking chamber 10.

The superheated steam supply device 40 includes a heater case 41 installed outside both side plates 13 of the cooking chamber, a circulation fan 42 installed inside the heater case 41 for internal circulation of steam, and a circulation It is provided with the superheated steam heater 43 which is installed in the outer periphery of the fan 42 and changes saturated steam into superheated steam. The circulating fan 42 is a centrifugal fan having a plurality of blades and sucks steam from the suction side of the central muscle to discharge radially. The discharged steam is supplied with heat while passing through the superheated steam heater 43. It changes to superheated steam.

Both side plates 13 of the cooking chamber are provided with a plurality of inlet holes 13a and outlet holes 13b for circulating steam inside the cooking chamber. The inlet hole 13a is formed near the center of the side plate 13, that is, at the portion corresponding to the suction side of the circulation fan 42, and the outlet hole 13b is formed at the edge of the side plate 13. .

Therefore, when the heating cooking apparatus is operated to cook food using steam, the water supply pump 24 is operated to supply water from the water tank 22 to the steam container 31 through the water supply pipe 23. The water supplied to the steam container 31 is vaporized by the steam heater 32 to become steam, and the steam is supplied into the cooking chamber 10 through the steam supply pipe 33 to cook food. When cooking food using superheated steam, the circulation fan 42 operates to suck steam in the cooking chamber 10 into the heater case 41, heat the superheated steam heater 43, and then supply the steam to the cooking chamber 10 again. To cook food.

In addition, the heating cooking apparatus according to the present invention has the following configuration to enable cooking using microwave. Figure 4 is a perspective view showing a partial configuration when viewed from the rear of the heating cooking apparatus according to the present invention, Figure 5 is a side cross-sectional view when the cover is coupled in Figure 4, Figure 6 is a sealing groove on the cooking chamber back plate in Figure 5 It is a side sectional view which shows the case where it was formed.

As shown in FIGS. 4 and 5, the magnetron 51 for supplying a high frequency into the cooking chamber 10 and the high voltage transformer for applying a high voltage to the magnetron 51 are provided on the rear side of the cooking chamber top plate 11. 52) is installed. In addition, a waveguide 53 for guiding the high frequency supplied from the magnetron 51 to the inside of the cooking chamber 10 is installed outside the rear plate 14 of the cooking chamber 10. In addition, an opening 14a is formed in the cooking chamber back plate 14 so that microwaves guided through the waveguide 53 may be introduced into the cooking chamber 10. Inside the cooking chamber back plate 14, a cover 60 covering the opening 14a is fixed through a screw 61, and the cover 60 is made of a material through which microwaves are transmitted.

In particular, the heating cooking apparatus according to the present invention includes a sealing member 70 for preventing the steam in the cooking chamber 10 from flowing into the waveguide 53 by the pressure when cooking using steam. The sealing member 70 is disposed between the inside of the cooking chamber back plate 14 and the cover 60. The sealing member 70 is preferably configured of an O-ring positioned to surround the opening 14a. Do. This O-ring may be formed using a material such as rubber or silicone. The sealing member 70 may be provided as a separate component independent from the cover 60, but if the attachment to the cover 60, as shown in Figure 4 will further improve the sealing effect.

However, when the sealing member 70 is disposed between the cooking chamber rear plate 14 and the cover 60 as described above, the cover 60 protrudes into the cooking chamber 10 due to the thickness of the sealing member 70, resulting in poor appearance. . Therefore, to compensate for this and to further enhance the sealing effect of the sealing member 70, the cooking chamber back plate 14 is formed around the opening 14a to accommodate a part of the sealing member 70 as shown in FIG. It is preferable to have a sealing groove 14b.

As described above, the heating cooking apparatus according to the present invention has an effect of preventing moisture from entering the waveguide even when the pressure inside the cooking chamber is increased due to steam. Therefore, it is possible to prevent the magnetron or the waveguide from being damaged by moisture, thereby improving the reliability of the product.

Claims (5)

In the heating cooking apparatus having a cooking chamber having an opening formed on one side so that microwaves can be introduced, a waveguide communicating with the opening, and a cover covering the opening inside the cooking chamber. And a sealing member disposed between one side of the cooking chamber having the opening formed therein and the cover to prevent moisture from entering the cooking chamber toward the waveguide. The method of claim 1, The sealing member is a heating cooking apparatus, characterized in that the O-ring (O-Ring). The method of claim 2, The sealing member is a heating cooking apparatus, characterized in that attached to the cover. The method of claim 2, One side of the cooking chamber is a heating cooking apparatus characterized in that it has a sealing groove formed around the opening to accommodate a portion of the sealing member. A cooking chamber having an opening formed at one side thereof to allow microwaves to flow therein; a waveguide communicating with the opening; a cover covering the opening at the inside of the cooking chamber; and a steam supply device for supplying steam into the cooking chamber. And a sealing member disposed between one side of the cooking compartment and the cover to prevent leakage of the steam supplied from the steam supply device into the cooking chamber toward the waveguide through the opening. .

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