KR20000011342U - Microwave - Google Patents

Abstract

The present invention has a problem in that the microwave oven has a high temperature of the air introduced into the electrical room by the heat dissipation fan has a high humidity, the cooling effect of the electrical equipment is lowered and the components of the electrical equipment may be damaged by moisture,

The electric compartment is equipped with a cooking chamber in which food is cooked, a magnetron generating electromagnetic waves, and a heat dissipation fan circulating air, and a partition wall partitioning the cooking chamber and the electric chamber, wherein the air in the electric chamber is sucked into the partition wall. In the microwave oven, each of which has an air inlet and an air outlet for circulating a part of the air in the cooking chamber to the electric compartment, the air outlet is formed in front of the heat dissipation fan,

While some of the air circulating in the cooking chamber is discharged to the electrical equipment room to block foreign matters from accumulating in the rear of the cooking chamber, the discharged air is distributed to the electrical equipment in the rising and descending air flows and supplied to the electrical equipment in a small amount. This relates to a reduced microwave oven.

Description

Microwave

The present invention relates to a microwave oven for cooking food using electromagnetic waves, and more particularly to a microwave oven for maintaining the interior of the cooking chamber by changing the air flow inside the cooking chamber by improving the vents inside the cooking chamber.

In general, a microwave oven is a cooker that cooks food using heat generated by the movement of water molecules by activating the movement of water molecules inside the food box provided inside the metal box using electromagnetic waves having a high frequency. . 1 is a plan sectional view showing such a microwave oven.

In general, as shown in FIG. 1, the main body is divided into two parts by the partition wall 15, one of which is a cooking chamber 10 in which food is actually cooked, and the other is an electric field where electric equipment is installed. It is a thread 20. In the electric compartment 20, a magnetron 21 for oscillating high frequency and a high voltage transformer 22 for applying a high voltage to the magnetron 21 are installed, and the rear side of the electric compartment 20 sucks external air. (21) The heat radiating fan 23 which cools the 22, and the drive motor 24 which drives the heat radiating fan 23 are provided. In addition, the guide duct 25 for guiding the air heated by the heat radiated by the magnetron 21 into the cooking chamber is provided.

The tray 11 in which food is placed is installed in the lower portion of the cooking chamber 10, and air suction openings 12 and air discharge openings 13 are provided at both side walls of the cooking chamber 10, respectively. The air inlet 12 is formed in the partition wall 15, and communicates with the guide duct 25 of the electric compartment 20, and the air outlet 13 is configured to guide the air circulated to the outside of the main body. In communication with

A general microwave oven configured as described above is configured to cook food when food is stored in a cooking chamber and power is applied.

When power is applied while food is stored in the cooking chamber 10, a high voltage is applied to the magnetron 21 by the high pressure transformer 22. The magnetron 21, to which a high voltage is applied, oscillates a high frequency of 2450 MHz, which is guided into the cooking chamber and injected into the food. The high frequency injected into the food activates the movement of the water molecules contained in the food, so that heat is generated to cook the food.

At this time, the heat dissipation fan 23 installed in the electric compartment 20 is driven to dissipate heat of the electric equipments 21 and 22, and a part of the air heated by the heat of the electric equipments 21 and 22 is magnetron. It moves to the inside of the cooking chamber 10 through the guide duct 25 installed on the (21) side. That is, the hot air of the electrical equipment room 20 flows into the cooking chamber 10 through the air suction opening 12 formed in the partition wall 15, and the introduced air circulates inside the cooking chamber 10 and then the air discharge opening 13. Is discharged to the outside of the main body.

However, the conventional microwave oven has a problem that adversely affects the hygiene and cleanliness of the interior of the cooking chamber because foreign matter accumulates because a blind spot is formed in the rear portion of the partition wall when the air circulates inside the cooking chamber. have.

That is, since the air inlet 12 is formed in front of the partition wall 15 of the cooking chamber 10 and the air outlet 13 is formed behind the outer wall, the air inlet 12 is formed in the inside of the cooking chamber 10. In the rear portion of the partition wall 15 is formed an air circulation blind spot that does not perform a smooth air circulation. Therefore, various foreign matters generated during cooking accumulate in this blind spot, and the accumulated foreign matter is difficult to visually identify and is not easy to remove.

In order to solve the above problems of the conventional microwave oven, Samsung Electronics discloses a microwave oven with improved cooking chamber vents as Korean Utility Model Publication No. 1998-017804.

The disclosed conventional microwave oven is configured in the same manner as the general microwave oven shown in FIG. 1 as shown in FIG. 2, except that the air inside the cooking chamber 10 is also circulated to the rear portion of the partition wall 15. A second air discharge port 16 through which air of (10) is discharged in the direction of the electric chamber 20 is formed in the rear portion of the partition wall 15. The second air discharge port 16 is formed between the air inlet side of the heat dissipation fan 23, that is, the air inlet 26 of the heat dissipation fan 23 and the electrical equipment chamber 20, and is absorbed by the suction force of the heat dissipation fan 23. Air behind the cooking chamber 10 is forcibly discharged to the electrical equipment chamber 20.

Here, since the microwave oven has the same configuration as a general microwave oven, the description of each part of the microwave oven will be omitted, and reference numerals will be denoted by the same reference numerals as those of the conventional microwave oven.

The conventional microwave oven configured as described above allows some of the air discharged from the cooking chamber to be discharged toward the electrical equipment chamber to smoothly circulate the air behind the cooking chamber.

When the microwave oven is operated, high pressure is applied to the magnetron 21 of the electric room 20 to generate electromagnetic waves. As the electromagnetic waves are generated, the food molecules in the cooking chamber 10 are heated, and heat is generated to produce food.

In addition, the heat radiating fan 23 of the electrical equipment compartment 20 is operated to suck external air, and the air sucked into the electrical equipment compartment 20 becomes hot while cooling the electrical equipments 21 and 22. The warmed air flows into the inside of the cooking chamber 10 through the guide duct 25 and the air inlet 12, and circulates inside the cooking chamber 10, and then through the air outlet 13 installed on the outer wall of the cooking chamber 10. It is discharged to the outside. At this time, a part of the air circulated into the cooking chamber 10 is introduced into the electrical equipment chamber 20 through the second air discharge port 16 formed at the rear of the partition wall 15 by the suction force of the heat dissipation fan 23. Therefore, air circulation in the rear of the cooking chamber 10 occurs more smoothly, and foreign matters generated during cooking are prevented from accumulating in the rear of the cooking chamber 10.

However, the conventional microwave oven configured as described above has a problem that the temperature of the air introduced into the electric compartment by the heat dissipation fan is high in humidity so that the cooling effect of the electric component is lowered and the parts of the electric component may be damaged by moisture.

That is, the second air discharge port 16 is installed on the air inlet side of the heat dissipation fan 23 so that a large amount of air flows into the electrical equipment room 20. 20) to be forced in. Therefore, a large amount of high-temperature air flows into the magnetron 21 and the high pressure transformer 22 of the electric compartment 20, and the cooling effect by the heat radiating fan 23 is lowered, and the magnetron 21 and the high pressure transformer 23 are reduced. Hot and humid air can be directly introduced in large quantities, which can cause fatal damage to the components.

The present invention is devised to solve the above problems of the prior art, by changing the position of the air discharge port to circulate some of the air circulating the cooking chamber to the battlefield, high temperature and humidity air sent to the electrical equipment of the battlefield The purpose of the present invention is to provide a microwave oven capable of dispersing a small amount of gas to prevent corrosion of the cooking chamber wall, maintaining cleanliness, and at the same time reducing damage of the electrical equipment and maintaining a cooling effect.

1 is a cross-sectional view showing a typical microwave oven,

2 is an internal perspective view showing another example of a conventional microwave oven;

3 is a plan sectional view showing a microwave oven according to the present invention;

Figure 4 is a side cross-sectional view showing the air flow of the electric part in the microwave oven of the present invention.

<Explanation of symbols for main parts of drawing>

50: cooking chamber 51: tray

52: air inlet 53: air outlet

60: battlefield 61: magnetron

62: high pressure transformer 63: heat dissipation fan

64: drive motor 65: guide duct

66: second air outlet 70: partition wall

The present invention for achieving the above object is configured to include a cooking chamber in which food is cooked, a magnetron for generating electromagnetic waves and a heat dissipation fan for circulating air, and a partition wall partitioning the cooking chamber and the electric chamber, In the microwave oven has an air inlet port through which the air of the electrical compartment is sucked into the partition wall and an air discharge port for circulating some of the air in the cooking chamber into the electrical compartment, the air discharge port is formed in front of the heat-radiating fan and foreign matter behind the cooking chamber. It is characterized in that it is configured to prevent the accumulation and to improve the cooling effect of the electrical equipment.

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

3 and 4, the microwave oven according to the present invention is divided into a cooking chamber 50 in which a body is actually cooked by a partition, and an electrical equipment chamber 60 in which electrical devices are installed. The electrical chamber 60 is provided with a magnetron 61 for oscillating a high frequency, and a high-voltage transformer 62 for applying a high voltage to the magnetron 61, and the rear of the electrical equipment chamber 60 by sucking external air Inside the cooking chamber 50, the heat radiated by the heat radiated by the heat radiating fan 63 to cool the 61 and 62, the drive motor 64 to drive the heat radiating fan 63, and the magnetron 61. Guide duct 65 is guided to the installation.

The tray 51 is installed in the lower portion of the cooking chamber 50, the air suction port 52 and the air discharge port 53 is provided on both side walls of the cooking chamber 50, respectively. The air inlet 52 is formed in the partition wall 70 to communicate with the guide duct 65 of the electrical chamber 60, the air outlet 53 is in communication with the outside to guide the air circulated to the outside of the main body D. In addition, the partition wall 70 is provided with a second air discharge port 66 through which a part of the air in the cooking chamber 50 is circulated to the electrical equipment chamber 60. The second air discharge port 66 is formed in front of the heat dissipation fan 63 to allow the air of the cooking chamber 50 to flow into the electric chamber 60 by the pressure difference.

The microwave oven of the present invention configured as described above blocks the accumulation of foreign matters at the rear of the cooking chamber by allowing the air of the cooking chamber to flow into the electric chamber using the pressure difference generated by the blowing of the heat radiating fan.

When food is put into the cooking chamber 50 and the cooking is started, a high voltage is applied to the magnetron 61 by the high pressure transformer 62, and the magnetron 61 generates high frequency of 2450 MHz. The high frequency generated by the magnetron 61 activates the movement of the water molecules contained in the food, so that heat is generated to cook the food.

The heat dissipation fan 63 installed in the electrical equipment chamber 60 sucks external air and blows it to the magnetron 61 and the high pressure transformer 62, and the electrical components 61 and 62 are cooled by the blown air. The air heated while cooling the electrical equipments 61 and 62 is introduced into the cooking chamber 50 through the guide duct 65 and the air suction port 52 to circulate inside the cooking chamber 50. Air circulating in the cooking chamber 50 is discharged to the outside through the air discharge port 53 installed on the side wall of the cooking chamber 50.

As air is blown toward the electrical equipments 61 and 62 according to the operation of the heat radiating fan 63, an air pressure difference is generated at both sides of the second air discharge port 66. That is, as the air moves, the pressure in the electric chamber 60 decreases, and the air inside the cooking chamber 50 is sucked into the electric chamber 60. Therefore, when the food is cooked, the accumulation of foreign matters behind the cooking chamber 50 is blocked.

At this time, the air exiting from the cooking chamber 50 to the electrical equipment chamber 60 is dispersed into the updraft and the downdraft without joining the blown air. That is, a small amount of hot and humid air discharged from the cooking chamber 50 to the electrical equipment chamber 60 is dispersed and supplied to the magnetron 61 and the high pressure transformer 62, thereby greatly affecting their cooling by the blown air. Not only does this reduce the damage to the parts due to moisture.

As described above, in the microwave oven of the present invention, part of the air circulating in the cooking chamber is discharged to the electric compartment, while the discharged air is dispersed in the rising air and the descending air, and supplied to the electric field in a small amount. There is an advantage in that the cooling effect and the damage to the electrical components are reduced.

Claims (1)

The electric compartment is equipped with a cooking chamber in which food is cooked, a magnetron generating electromagnetic waves, and a heat dissipation fan circulating air, and a partition wall partitioning the cooking chamber and the electric chamber, wherein the air in the electric chamber is sucked into the partition wall. In a microwave oven having an air inlet port and an air outlet port for circulating a part of the air in the cooking chamber to the electric compartment, The air discharge port is formed in front of the heat dissipation fan to prevent foreign matters from accumulating in the rear of the cooking chamber and configured to improve the cooling effect of the electrical equipment.