KR19980072875A - Microwave Dispersion Structure of Microwave Oven - Google Patents

Abstract

The present invention relates to an ultra-high frequency dispersion structure of a microwave oven, wherein the first opening 18 is formed in the upper surface 16 of the cooking chamber 4, and the second opening is formed in the side boundary plate 8 of the cooking chamber 4. Shield 20 which penetrates 20 and selectively blocks the first opening 18 and the second opening 20 by the operating means 28 in the waveguide 10 propagating ultra-high frequency in the cooking chamber 4. The plate 22 is installed, and the shielding plate 22 is hinged between both sides of the waveguide 10, and the operating means hinges the shielding plate 22 to one side of the waveguide 10. It consists of a solenoid 28 having a solenoid shaft 30 formed at the distal end of the gear teeth 32 engaged with the spur gear 26 provided on the protruding shaft 24, and ultra-high frequency irrespective of the size of food. It is to be uniformly delivered to food to be optimal cooking.

Description

Microwave Dispersion Structure of Microwave Oven

The present invention relates to an ultra-high frequency dispersion structure of a microwave oven, and in particular, to form an opening in the upper surface of the cooking chamber and the boundary plate provided on the side of the cooking chamber, selectively opening and closing the opening to selectively adjust the height of the ultra-high frequency dispersed in the cooking chamber. By doing so, the present invention relates to an ultra-high frequency dispersion structure of a microwave oven for optimum cooking regardless of the size of food to be cooked.

As shown in FIG. 1, the microwave microwave dispersion structure of the conventional microwave oven is divided into a cooking chamber 52 for cooking food and the cooking chamber 52 and a boundary plate 56 to adjust a cooking state of the cooking chamber 52. The electric field chamber 54 and the waveguide 58 which guide | induces the ultra-high frequency generate | occur | produced in the magnetron 60 provided in the said electric field chamber 54 to the cooking chamber 52 are comprised.

In addition, the cooking chamber 52 is provided with a tray 66 on a bottom surface, and an opening 64 is formed through the upper surface 62.

In addition, the waveguide 58 is the upper surface of the cooking chamber 52 in the boundary plate 56 between the cooking chamber 52 and the electric field chamber 54 to guide the ultra-high frequency generated from the magnetron 60 to the inside of the cooking chamber 52. (62) It is installed outward. In addition, the waveguide 58 is bent at both ends to one side to form an open portion at one side, and the tip is connected to the ultra-high frequency generator of the magnetron 60, and the open portion is bounded by the boundary plate 56, and both ends thereof are bounding plates. (56) After welding to the side surface of the electrical chamber 54, the waveguide 58 is bent from the upper edge of the boundary plate 56 toward the cooking chamber 52, and the opening is outside the upper surface of the cooking chamber 52, and both ends thereof are connected to the cooking chamber 52. The upper surface 62 is welded to the outer surface.

At this time, the waveguide 58 is welded to the upper surface 62 of the cooking chamber 52 through the opening 64 formed in the upper surface 62 of the cooking chamber 52 and the other end of the waveguide 58 is sealed with a square plate.

On the other hand, looking at the operation of the conventional ultra-high frequency dispersion structure having the configuration as described above, first, when the user wants to cook food, open the door, put the food on the tray 66 in the cooking chamber 52. When the microwave oven 50 is operated, ultra high frequency is generated in the magnetron 60 of the electric chamber 54 while the tray 66 in the cooking chamber 52 rotates, and the ultra high frequency generated in the magnetron 60 is a waveguide 58. It is dispersed into the cooking chamber 52 through the opening 64 formed through the upper surface 62 of the cooking chamber 52 through the ().

In addition, a part of the ultra-high frequency dispersed in the cooking chamber 52 is directly incident on the food, or part is reflected on all sides in the cooking chamber 52 and is incident on the food, thereby causing the water molecules of the food to vibrate. The food was cooked by rapidly heating the outside and the inside of the food simultaneously by frictional heat.

However, the conventional ultra-high frequency dispersion structure as described above has an opening 64 of the upper surface 62 of the cooking chamber 52 for dispersing microwaves when the height of the food placed on the tray 66 of the cooking chamber 52 is low. The distance between the food and the food is far from the amount of ultra-high frequency delivered directly to the food has a problem that the food is not optimal cooking.

In addition, when the height of the food is high, the upper portion of the food is relatively close to the opening 64 of the upper surface 62 of the cooking chamber 52, so the amount of ultra-high frequency directly incident on the upper portion of the food becomes relatively large. Since the distance of the lower part of the food is relatively far from the opening 64 of the upper surface 62 of the cooking chamber 52, the ultra-high frequency transmitted to the lower part of the food is reflected in all directions in the cooking chamber 52, and the amount of the ultra-high frequency incident to the cooking chamber 52 is incident. As a result of the relatively high number, the microwaves incident on the upper and lower portions of the food become non-uniform, and thus the cooking state of the food cooked in the cooking chamber 52 of the microwave varies depending on the upper and lower portions, that is, the height cannot be optimally cooked. there was.

The present invention has been made in view of the conventional problems, the technical problem of the present invention is to form an opening in the boundary plate provided on the upper surface of the cooking chamber and the side of the cooking chamber and selectively open and close the opening of the ultra-high frequency distributed in the cooking chamber By selectively adjusting the height, the ultra-high frequency delivered to the food according to the size of the food to be cooked to uniform to ensure the best cooking.

The technical object of the present invention is to penetrate the first opening in the upper surface of the cooking chamber of the microwave oven, penetrate through the second opening in the side boundary plate of the cooking chamber, and the first opening and the waveguide for microwave propagation. It is achieved by providing an ultra-high frequency dispersion structure of a microwave oven provided with a rotating plate for selectively blocking the second opening by the operation means.

1 is a schematic diagram showing a conventional ultra-high frequency dispersion structure,

Figure 2 is a schematic diagram showing the ultra-high frequency dispersion structure of the microwave oven according to the present invention,

Figure 3 is a perspective view showing a state of operating the rotating plate, the main part of the present invention by a solenoid,

4 is a cross-sectional view showing a state in which the rotating plate according to the present invention blocks the second opening;

5 is a cross-sectional view showing a state in which the rotating plate according to the present invention is operated by a solenoid.

<Explanation of symbols for main parts of drawing>

2: microwave 4: cooking chamber

8: boundary plate 10: waveguide

18: first opening 20: second opening

22: shield plate 24: shaft

26: spur gear 28: solenoid

30: solenoid shaft 32: gear tooth

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, the microwave dispersion structure of the microwave oven according to the present invention is divided into a cooking chamber 4 for cooking food, the cooking chamber 4 and a boundary plate 8, and a cooking chamber 4. And a waveguide 10 for guiding the ultra-high frequency generated from the magnetron 12 installed in the electric chamber 6 to the cooking chamber 4.

In addition, the cooking chamber 4 is provided with a tray 14 on the bottom surface, the first opening 18 is formed through the upper surface 16. In addition, a second opening 20 penetrates through the magnetron 12 above the boundary plate 8 between the cooking chamber 4 and the electric compartment 6.

In addition, in order to propagate the ultra-high frequency generated in the magnetron 12 into the cooking chamber 4, the boundary plate 8 between the cooking chamber 4 and the electric field chamber 6 is moved outward from the upper surface 16 of the cooking chamber 4. The waveguide 10 is provided, and the waveguide 10 has a shape in which both ends are bent to one side to form an open portion at one side.

The tip of the waveguide 10 is connected to the ultra-high frequency generating portion of the magnetron 12, and then the both ends are welded to the electric chamber 6 side of the boundary plate 8, with the opening part toward the boundary plate 8. Then, the waveguide 10 is bent from the upper side of the boundary plate 8 to the cooking chamber 4 side, and the opening is made outward from the upper surface 16 of the cooking chamber 4, and both ends are formed on the outer surface of the upper surface 16 of the cooking chamber 4. 1 After welding through the opening 18, the other end of the waveguide 10 is sealed with a square plate.

Then, coupling holes are formed at both sides of the upper waveguide 10 at the second opening 20 side, and the through holes formed at one side of the rectangular shielding plate 22 are aligned with the coupling holes, and then the shaft 24 is rotated at one side. The shield plate 22 to the waveguide 10. Then, the operation means for operating the shield plate 22 is installed, the operation means is a spherical plate-shaped gear 26 of the disc formed on the outer peripheral surface of the shaft 24 protruding to one side of the waveguide 10 After the installation, the gear tooth 32 is formed at the tip of the solenoid shaft 30 operated by the solenoid 28 so that the gear tooth 32 is engaged with the gear of the spur gear 26.

Thus, the operation of the ultra-high frequency dispersion structure of the microwave oven according to the present invention configured as follows.

First, the process of rotating the shield plate 22, which is the main part of the present invention, will be described with reference to FIG.

When a current in the forward direction is applied to the solenoid 28, the solenoid shaft 30 having the gear teeth 32 engaged with the spur gear 26 fitted to the shaft 24 of the shielding plate 22 at the distal end thereof is the solenoid. Outward from (28) to rotate the spur gear 26 to the shield plate 22 coupled by the spur gear 26 and the shaft 24 is rotated 90 ° to one side. When the current in the forward direction is continuously applied to the solenoid 28, the solenoid shaft 30 continues to move forward to rotate the spur gear 26 to further rotate the shield plate 22 by 90 ° to one side. In addition, when a reverse current is applied to the solenoid 28, the solenoid shaft 30 enters the solenoid 28 and rotates the spur gear 26 reversely so that the shield plate 22 rotates 90 ° to the other side. do.

Referring to FIGS. 4 and 5, the shielding plate 22, which is a main part of the present invention operating as described above, will be described with reference to FIGS. 4 and 5.

First, a description will be given on the assumption that the shield plate 22 is in close contact with the upper boundary plate 8 of the second opening 20 when cooking food having a low height in the cooking chamber 4 of the microwave oven 2. As follows.

When the user puts food in the microwave 2 cooking chamber 4, closes the door, and operates the operation panel, the ultra-high frequency generated from the magnetron 12 of the electric chamber 6 is propagated through the waveguide 10 and the cooking chamber ( 4) in which the user operates the keys of the operation panel such that the shield plate 22 blocks the first opening 18. Then, a reverse current is applied to the solenoid 28, and the solenoid shaft 24 enters into the solenoid 28, whereby the spur gear meshing with the gear teeth 32 formed at the tip of the solenoid shaft 30 is engaged. When 26 is reversely rotated, the shielding plate 22 rotates 90 ° downward of the other side of the shielding plate 22 about the hinge shaft 24 so that the upper portion of the second opening 20 of the waveguide 10 is rotated. To close the passage. In this way, the shielding plate 22 closes the passage of the waveguide 10 so that the ultra-high frequency generated in the magnetron 12 of the electric field chamber 6 is dispersed into the cooking chamber 4 through the open second opening 20. As a result of being incident on the food, food of low height in the cooking chamber 4 is evenly cooked.

Next, a description will be made on the assumption that the shielding plate 22 blocks the passage of the waveguide 10 when cooking food having a high height in the cooking chamber 4 of the microwave oven 2 is as follows.

First, when the user puts food in the microwave 2 cooking chamber 4, closes the door, and operates the operation panel, the ultra-high frequency generated in the magnetron 12 of the electric chamber 6 is propagated through the waveguide 10. In the cooking chamber 4, the user operates the keys of the operation panel so that the shield plate 22 opens the first opening 18 and the second opening 20. Then, a forward current is applied to the solenoid 28, and the solenoid shaft 24 comes out of the solenoid 28, whereby the spur gear meshing with the gear teeth 32 formed at the tip of the solenoid shaft 30 is engaged. (26) rotates forward, and the shield plate 22 is rotated 90 degrees to the upper side around the hinge axis 24, the boundary plate of the cooking chamber 4 and the electric chamber 6 (8) It adheres to the surface. Then, the first opening 18 and the second opening 20 are opened so that a part of the ultra-high frequency generated in the magnetron 12 of the electric chamber 6 is dispersed into the cooking chamber 4 through the second opening 20. The light enters the lower portion of the food, and the rest propagates through the waveguide 10, is dispersed into the cooking chamber 4 through the first opening 18 of the upper surface of the cooking chamber 4, and enters the upper portion of the food. High and high foods will be cooked evenly.

As described above, the microwave dispersion structure of the microwave oven according to the present invention forms the first opening 18 in the upper surface 16 of the cooking chamber 4 and the second opening 20 in the boundary plate 8. By selectively blocking the first opening 18 and the second opening 20 by the shielding plate 22 rotated by the solenoid 28, the ultra-high frequency is uniformly transmitted to the food regardless of the size of the food. It is effective to make optimal cooking.

Claims (2)

In the ultra-high frequency dispersion structure of the microwave oven 2 which propagates microwaves through the first opening 18 of the waveguide 10 into the cooking chamber 4, a second opening is formed in the side boundary plate 8 of the cooking chamber 4. And a shielding plate 22 formed through the 20 and selectively blocking the first opening 18 and the second opening 20 by the operating means 28 in the waveguide 10. Ultra-high frequency dispersion structure of the microwave oven characterized by the above-mentioned. The method of claim 1, wherein the shielding plate 22 is hinged between both sides of the waveguide 10, the operation means is hinged to the shielding plate 22 to protrude to one side of the waveguide 10 An ultra-high frequency dispersion structure of a microwave oven, comprising: a solenoid (28) having a solenoid shaft (30) formed at a distal end of a gear tooth (32) engaged with a spur gear (26) provided on a shaft (24).