KR100621036B1 - Magnetron Cooling Structure for Hooded Microwave Oven - Google Patents

Abstract

The present invention relates to a microwave oven, and more particularly, to a magnetron cooling structure of a microwave oven with a hood.

According to the present invention, an intake grill (70) into which air for cooling an electric component is introduced, air for cooling the electric component, and smoke and heat from the lower cooker are sucked into the inlet (31) and discharged to the outside. The magnet assembly 50, the magnetron 50 on which one side of the heat generating part 52 is located in front of the inlet port 31, and the space formed between the air inlet port 31 and the magnetron 50, It consists of an air guide 90 to shield the inflow.

A straight air flow from the intake grill 70 toward the exhaust motor assembly inlet 31 passes through the magnetron by the air guide and flows into the inlet.

According to the configuration as described above, the cooling efficiency is improved to improve the reliability and durability, and the power consumption compared with the conventional.

Microwave Oven, Magnetron, Air Guide

Description

Cooling structure of magnetron for ventilation hooded microwave oven

1 is a perspective view showing the main components of a conventional microwave oven.

Figure 2 is a perspective view showing the main portion of the hood-use microwave oven according to the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

20. Cavity 25. Battlefield

30. Exhaust motor assembly 31. Intake vent

40. Mounting surface 41. High voltage transformer

42. High Voltage Capacitor 50. Magnetron

51.52 Heating element 60.Air duct

70. Intake grill 80. Partition wall

90. Air guide T. Side

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to an electric component cooling flow path of a microwave oven with a hood, in which the cooling efficiency of the electric component is improved due to a structural change.

Various kinds of apparatuses have been proposed to date as heating apparatuses for heating foods. The most primitive heating device is a container in contact with the heat source integrated, it is possible to cook the food by putting the contents to be cooked in such a container and applying heat.

 In addition, many types of cooking apparatuses that use electric energy directly or indirectly have been developed. As an example, a microwave oven using microwaves as a heating source can be cited. A microwave oven is a cooking apparatus that generates microwaves using electricity to infiltrate a cooking object and heat the cooking object by causing molecular motion therein.

In general, a hood-use microwave oven (hereinafter also referred to simply as a microwave oven) is installed at an upper portion of the gas oven range and has a function of discharging heat or smoke generated from the gas oven range.

Microwaves, which are heating sources in such microwave ovens, are generated by components in the electrical equipment room, where heat is radiated for normal operation of devices installed in the electrical equipment room. Conventionally, a separate cooling motor assembly is mounted on the upper side or the side of the electrical compartment for heat dissipation.

1 shows such a microwave oven.

The cavity 1 in which food is cooked and the electric compartment 3 in which the electric component is mounted on the upper part are partitioned by the side surface T. As shown in FIG. The exhaust motor assembly 5 is installed at the rear side of the cavity upper surface 1a, and the surrounding air is sucked into the inlet port 5a formed at both ends and discharged to the outside.

In the exhaust motor assembly 5, the mounting surface 10 is mounted on the upper part of the electric compartment 3 at a height close to the inlet port 5a toward the upper part of the electric compartment 3. On the mounting surface 10, electrical components such as a high voltage transformer 11 and a high voltage capacitor 12 are mounted.

And the magnetron 13 which produces a microwave is provided in front of the inlet port 5a. Both sides of the magnetron 13, the heating portion is installed a plurality of cooling fins

(13a, 13b). The heat generating parts 13a and 13b of both sides are in communication with each other, so that the air cooling the heat generating part 13a of one side exits to the heat generating part 13b of the other side.

One end and the other end of the air duct is installed in the inlet port (5a) and the heat generating portion (13b)

15 smoothly flows the air to cool the heat generating portions 13a and 13b on both sides.

An intake grill 15 is formed in the front direction on the mounting surface 10 to become a passage through which external air enters. A partition wall 17 is provided on the cavity upper surface 1a from the intake grill 15 to one side of the exhaust motor assembly inlet 5a. The partition wall 17 has a shape of a plate and serves to prevent the airflow directed to the exhaust motor assembly 5 from flowing above the cavity 1.

In the conventional microwave oven having the above configuration, the flow of airflow for cooling the electric component is as follows.

Most of the outside air passing through the intake grill 15 is the exhaust motor assembly intake port.                         

It forms a straight air flow toward (5a), and cools the electrical components including the high-pressure capacitor 12 and the high-voltage transformer 11 mounted on the mounting surface 10 to the intake port (5a) through the upper air duct Is inhaled.

A part of the airflow that cools the electric component is cooled by the magnetron 13 mounted in front of the inlet port 5a and sucked into the inlet port 5a. Referring to the air flow for cooling the magnetron 13 in detail, the heat generating portion formed on one side of the magnetron 13

Airflow entered through the (13a) comes out of the heat generating portion (13b) formed on the other side to the air duct

It is sucked into the exhaust motor assembly intake port 5a through 15 and discharged to the outside.

On the other hand, the straight single airflow is formed due to the flow of air is restricted by the partition wall 17, the mounting surface 10 and the outer case forming the outer shape of the microwave oven.

However, the following problems occur in the cooling of the magnetron 13 according to the prior art.

The direction of the airflow flowing from the intake grill 15 toward the magnetron 13 is perpendicular to the airflow direction passing through the heat generating parts 13a and 13b on both sides of the magnetron 13. Only a part of the air flow toward the magnetron 13 by the air flow flows into the heat generating portion 13a formed on the side of the magnetron 13 to cool the magnetron 13, and most of the air flow is above the air duct 15. Inhalation is made through the inlet port 5a. Therefore, a loss of airflow that cools the magnetron 13 occurs, and power consumption is increased by lowering cooling efficiency.                         

In addition, since the magnetron 13 is not smoothly cooled by the air flow, problems with product durability and reliability, such as shortening of life due to overheating and abnormal operation, may occur.

Accordingly, an object of the present invention is to solve the conventional problems as described above, the magnetron cooling structure of a microwave oven with a hood is reduced power consumption by reducing the loss of air flow to cool the magnetron to improve the cooling efficiency To provide.

Another object of the present invention is to provide a magnetron cooling structure of a microwave oven for hood that prevents problems with durability and reliability due to magnetron overheating.

In order to achieve the above object, the magnetron cooling structure of the microwave oven according to the present invention includes an intake grill into which air for cooling an electric component flows in, an air for cooling the electric component, and smoke from a lower cooker. And an exhaust motor assembly that sucks heat into the intake port and discharges it to the outside, a magnetron mounted on the front side of the intake port so that the heat generating part is located, and an air guide that shields the inflow of airflow into a space formed between the intake port and the magnetron. Including,

The straight air flow from the intake grill toward the exhaust motor assembly intake port is characterized by being introduced into the intake port through the magnetron by the air guide.

An air duct is installed so that one end is connected to the inlet and the magnetron heat generating part and the other end are connected to communicate with the inlet and the heat generating part.

The air guide is installed from the upper surface of the cavity to the upper surface of the corresponding outer case, thereby partitioning the air flow flowing through the intake grill and the space formed between the intake port and the magnetron.

According to the present invention having such a configuration, the cooling efficiency of the magnetron is improved to improve the reliability and durability of the magnetron, and the power consumption is reduced as compared with the conventional art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same as in the prior art will be briefly described.

As shown in FIG. 2, the cavity 20 and the electric compartment 25 in which the electric component is mounted on the upper part are partitioned by the side surface T. As shown in FIG. An exhaust motor assembly 30 having an inlet 31 at both ends is provided at the rear side of the cavity upper surface 21.

The mounting surface 40 fixed at the same height as the cavity upper surface 21 on which the exhaust motor assembly 30 is mounted is a high voltage transformer 41 generating high voltage power and a high voltage capacitor 42 accumulating power. Electrical components such as

In addition, the magnetron 50 generating the microwaves by the high voltage power applied by the electric component is installed in front of the inlet port 31. As described in the related art, the structure of the magnetron 50 has heat generating parts 51 and 52 provided with cooling fins on both sides thereof, and has a space communicating with each other inside the magnetron 50.

An air duct 60 is installed so that one end of the inlet 31 and the other end of the magnetron heating unit 52 are connected to each other so that the inlet 31 and the heating unit 52 communicate with each other. The air duct 60 comes out of the heat generating portion 52 on one side of the magnetron 50 and the flow velocity of the air duct 60 is limited by limiting the flow area of the air sucked into the inlet 31. Therefore, the flow of air that passes through the heat generating parts 51 and 52 and cools smoothly.

An intake grill 70 is provided on the upper surface of the mounting surface 40 to provide a passage for air inflow, and is shown on the cavity upper surface 21 from one side of the intake grill 70 to one side of the exhaust motor assembly inlet 31. Similarly, the partition wall 80 is installed.

The air guide 90 perpendicular to the partition wall 80 is welded and fixed to the partition wall 80 proximate to the inlet 31. The air guide 90 has a plate shape and has an area corresponding to a space from the inlet port 31 to the magnetron heat generating unit 52.

When the shape of the air guide 90 is described in detail, the distance from the exhaust motor assembly inlet 31 to the corresponding magnetron heat generating portion 52 becomes the bottom length, from the cavity upper surface 21 to the outer case upper surface. The gap is height. The air guide 90 is installed to prevent the airflow introduced through the intake grill 70 from directly entering the intake port 31 through the air duct 60.

The shape and the mounting position of the above-described air guide 90 is according to the embodiment of the present invention, of course, the shape and the mounting position can be changed within the range serving as the air guide 90.

Referring to the flow of the airflow according to an embodiment of the present invention as described above in detail.

By the operation of the exhaust motor assembly 30, ambient air is sucked through the inlet port 31 and discharged to the outside, thereby lowering the pressure of the internal air.

As a result, external air having a relatively high pressure is introduced through the intake grill 70 to flow the upper surface of the mounting surface 40 to cool the electric components such as the high pressure transformer 41 and the high pressure capacitor 42. A part of the air flow is directed to the magnetron heat generating portion 51 and most of the air flow is sucked into the intake port 31 through the air duct 60.

However, according to the embodiment of the present invention, the air guide 90 is installed between the intake port 31 and the magnetron 50 to prevent the flow of airflow flowing over the air duct 60. As a result, the air flow is bypassed to the magnetron 50 side as shown, and is sucked into the heat generating part 51 on one side.

The airflow introduced into the heat generating unit 51 on one side of the magnetron 50 cools the magnetron 50 and is sucked into the air inlet 31 through the heat generating unit 52 and the air duct 60 on the other side and is outside the microwave oven. Is discharged.

As described above, by blocking the air sucked into the inlet 31 through the air duct 60 by mounting the air guide 90 according to an embodiment of the present invention to concentrate the flow of air flow to the magnetron 50 Compared with the prior art, the cooling efficiency is improved.

In addition, the rotation speed decreases when the exhaust motor assembly 30 is operated to obtain the same cooling force as the conventional airflow, thereby achieving a lower noise structure than the conventional airflow.

In addition, the cooling of the magnetron 50 is smooth, thereby preventing shortening of the life and abnormal operation of the product due to overheating, thereby improving durability and reliability of the magnetron 50.

Many other modifications based on the present invention will be possible to those skilled in the art within the scope of the above.

As described above, according to the present invention, the cooling efficiency is improved due to the improvement of the flow of air toward the magnetron, thereby reducing the power consumption.

In addition, when driving to obtain the same cooling power as in the prior art, the rotation speed of the exhaust motor is reduced, thereby achieving a low noise structure.

In addition, the durability and reliability is improved by the cooling of the effective magnetron.

Claims (3)

An intake grill into which air to cool the electronic parts flows in; An exhaust motor assembly for sucking the air to cool the electric component and the smoke and heat from the lower cooker through the intake port and discharging them to the outside; Magnetron is mounted so that the heat generating portion on one side in front of the inlet port, It is configured to include an air guide for shielding the inflow of air flow into the space formed between the intake port and the magnetron, The linear airflow from the intake grill to the exhaust motor assembly inlet port is passed through the magnetron by the air guide flows into the inlet port, characterized in that the hood of the microwave oven hood. The magnetron cooling structure according to claim 1, wherein an air duct is installed so that one end of the intake port and the other end of the magnetron heat generating part are connected to each other so that the intake port and the heat generating part communicate with each other. The air guide of claim 1 or 2, wherein the air guide is installed from the upper surface of the cavity to the upper surface of the corresponding outer case, thereby partitioning the air flow flowing through the intake grill and the space formed between the intake port and the magnetron. Magnetron cooling structure of a combined use microwave oven, characterized in that.

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