KR100603526B1 - Cooling Apparatus Of Machine Parts For Ventilation Hooded Microwave Oven - Google Patents

Abstract

The present invention relates to an electric component cooling apparatus for a hood-use microwave oven. The present invention relates to an electric component mounted on an electric field chamber (30) provided on an upper portion of the cavity assembly (20) to generate a microwave transmitted into a cavity assembly (20) A vent motor assembly 40 for forming an air flow for functioning and an air flow for radiating the electric component, and a control unit 40 for controlling the flow of air flowing into the electric field chamber 30 by a suction force of the vent motor assembly 40, And an intake guide (50) for guiding the electric component to cool the electric component. According to the present invention as described above, the air flow generated by the vent motor assembly 40 is concentrated on electrical components, thereby improving the cooling efficiency of the electrical components and improving the reliability of the electrical components.

Microwave oven, electric room, electric parts, high pressure transformer, magnetron, cooling

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling device for a microwave oven,

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a configuration of a cooling component for electric component according to the related art; FIG.

2 is a plan view showing a configuration of a cooling component for electric component according to the related art.

FIG. 3 is a perspective view showing a configuration of a preferred embodiment of the electric component cooling apparatus according to the present invention and its air flow. FIG.

4 is a plan view showing a configuration of an embodiment of the present invention.

5 is a side view showing a configuration of an embodiment of the present invention.

Description of the Related Art [0002]

20: cavity assembly 30: electric field chamber

31: bottom plate 33: magnetron

35: high voltage transformer 37: high voltage capacitor

40: vent motor assembly 41: intake port

50: intake guide 51: intake grill

53: air guide 55: direction adjusting blade

57: connecting portion 60: partition wall

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 structure of a combined microwave oven having improved cooling efficiency.

Various types of apparatuses have been proposed so far as heating apparatuses for heating foods. The most basic heating device has a container in intimate contact with a heat source, and food can be cooked by placing the contents to be cooked in the container and applying heat.

 There have been developed many kinds of cooking devices that directly or indirectly use electric energy, and examples thereof include a microwave oven using a microwave as a heating source. A microwave oven is a cooking device that generates microwaves by using electricity to infiltrate a cooking object and cause molecular motion in the interior thereof to heat the object to be cooked.

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

In this microwave oven, the microwave to be heated is generated by the components in the electric room, and the heat is dissipated for the normal operation of the appliances installed in the electric room. Conventionally, a separate cooling motor was mounted on the top or side of the electric room, and the heat was dissipated. However, the heat dissipation of the electric room using the vent motor assembly was also used.

Figs. 1 and 2 are respectively a perspective view and a plan view showing the construction of the electric part cooling structure according to the prior art.

As shown in these drawings, a cavity assembly 1, which is a space where food is cooked inside, and an electric field chamber 2 in which electric component parts are mounted on top, are formed inside the microwave oven. The bottom surface of the electric field chamber 2 is formed with a bottom plate 3 and the bottom plate 3 is installed at a position corresponding to the upper end of the cavity assembly 1.

On the bottom plate 3, various electric parts are provided. A magnetron 4 for generating a microwave transmitted to the interior of the cavity assembly 1 and a high-voltage transformer 5 and a high-voltage capacitor 6 for supplying high-voltage power to the magnetron 4 are installed . The magnetron 4, the high-voltage transformer 5 and the high-voltage capacitor 6 are installed on the bottom plate 3 to be transmitted to the vent motor assembly 7 through the intake grill 9, Lt; / RTI >

A waveguide (not shown) for guiding microwaves generated in the magnetron 4 into the cavity assembly 1 is mounted on the lower surface of the magnetron 4 and the side surface of the cavity assembly 1 at the same time.

A vent motor assembly 7 is mounted at the rear of the upper surface of the cavity assembly 1 to suck ambient air through the air inlet 8 at both ends and discharge the air to the outside. The vent motor assembly 7 forms an air flow for cooling the hood function and electrical components of the electric vehicle room 2. [ That is, the air for the hood function is sucked through the one inlet port 8 and the air for the cooling function is sucked through the other inlet port 8.

An intake grill 9 is provided at a portion corresponding to the front surface of the electric vehicle room 2 so that outside air can be sucked into the electric room 2 by the driving force of the vent motor assembly 7. [ The intake grill 9 is provided on the front surface of the electric room 2. The electric room grill 9 is provided with electric parts disposed on one side of the electric room 2 to allow air to pass through only one side (9a) is formed.

A partition wall (10) is installed on the upper surface of the cavity assembly (1) to guide the air flowing from the intake grill (9) to the vent motor assembly (7). The partition wall (10) divides the upper surface of the cavity assembly (1) into a portion communicating with the electric field chamber (2) and a portion communicating with the electric chamber (2).

The flow of air in the electric field chamber constructed as described above is as follows.

The inside of the microwave oven is in a low-pressure state due to the ventilation motor assembly 7 sucking the surrounding air and discharging the air to the outside, whereby the outside air is introduced through the intake grill 9. At this time, since the intake grille 9 is formed with only one side 9a of the intake grill 9, the outside air is introduced into the electric room 2 through the point where the side 9a is formed.

The inflow air forms an air flow toward the vent motor assembly 7 and the electric components mounted on the electric field chamber 2 such as the high voltage capacitor 6, the high voltage transformer 5 and the magnetron 4 Heat is generated. Then, the air that radiates heat from each electric component is sucked into the vent motor assembly 7 located at one side of the electric room 2 through the air inlet 8 and discharged to the outside.

However, the above-described conventional techniques have the following problems.

That is, the intake grill 9 is formed in a simple plate shape, and the air can be passed through the porous portion 9a and does not serve to induce the flow of air. Therefore, the air introduced into the intake grill 9 forms an air flow only by the suction force of the vent motor assembly 7, so that some of the air does not flow into the electric components mounted on the electric vehicle room 2, And flows into the space where the electric parts of the chamber 2 do not exist. That is, the air introduced into the electric field chamber 2 not only forms an air flow as indicated by a black arrow in FIG. 2 but also forms an air flow as indicated by a white arrow in FIG. 2. This is because the external cold air tends to form the flow path in a direction in which heat loss is small.

Therefore, in the conventional cooling structure, the air introduced into the electric room 2 can not be used to dissipate electrical components, thereby lowering the cooling efficiency of electrical components, which may lead to reliability of electric components due to overheating.

This is especially because the high-voltage transformer 5, which is the most expensive and radiates high heat, can not sufficiently radiate heat, causing the high-voltage transformer 5 to be damaged.

Also, in the conventional cooling structure, a part of the intake grill 9 is blocked to open the other part of the intake grill 9 in order to introduce the outside air in the direction in which the electric component is located, thereby reducing the amount of air flowing into the interior.

Therefore, in order to increase the amount of air to be sucked, the rotating speed of the vent motor must be increased. In this case, there is a problem that noise increases and power consumption increases.

In addition, in order to solve the reliability problem of the electric parts due to the overheating, the electric parts are manufactured in such a manner that the calorific value is reduced, thereby increasing the manufacturing cost of the electric parts.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an air conditioner for a hood, which maximizes cooling efficiency of electric components by utilizing air flow generated by a vent motor assembly, To provide an electric component cooling structure of the range.

Another object of the present invention is to provide an electric component cooling structure of a combined microwave oven which does not need to take heat resistance into consideration during manufacture of electrical components by making the heat dissipation of electric components smooth.

Another object of the present invention is to provide an electric component cooling structure for a combined microwave oven in which the rotating speed of the vent motor is relatively reduced in order to obtain the same cooling power as the conventional one.

According to an aspect of the present invention, there is provided a microwave oven comprising: an electric component mounted on an electric field chamber provided on an upper portion of the cavity assembly to generate a microwave transmitted into a cavity assembly; A ventilation motor assembly for generating an air flow for radiating the airflow and the electric component, and an intake guide for guiding the flow of air introduced into the electric chamber by a suction force of the ventilation motor assembly in a predetermined direction to cool the electric component ≪ / RTI > The intake guide includes an intake grill for introducing air to cool the electric chamber, and an air guide provided at both ends of the intake grill to guide the intake air to a predetermined angle with the intake grill .

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The intake guide further includes a direction adjusting blade extending from an end of the air guide to adjust the direction of the air toward a specific electric component of the electric room.

The intake guide may further include a connecting portion connecting the ends of the air guide to each other to prevent an angle change between the air guide and the suction grille.

The air guide, the direction adjusting blade and the connecting portion are formed by a plate member provided on the suction grille, and are formed by bending and cutting the plate member, respectively.

According to the present invention having such a configuration, the air flow generated by the vent motor assembly is concentrated on the electric component, thereby improving the cooling efficiency of the electric component and improving the reliability of the electric component.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a cooling device for electric parts of a microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a configuration of a preferred embodiment of the electric component cooling apparatus according to the present invention and its air flow, FIG. 4 is a plan view showing the configuration of the embodiment of the present invention, and FIG. 5 is a side view showing the configuration of the embodiment . Here, each drawing is shown with the components constituting the external appearance of the microwave oven such as the outer case and the door removed.

As shown in these drawings, a cavity assembly 20 having a cooking chamber, which is a space where food is cooked inside, and an electrical chamber 30 in which electric component parts are mounted on the cabinet 30 are formed inside the microwave oven. The bottom surface of the electric field chamber 30 is formed with a bottom plate 31 and the bottom plate 31 is installed at a position corresponding to the upper end of the cavity assembly 20.

Various electrical components are mounted on the bottom plate 31. A magnetron 33 for generating a microwave transmitted to the inside of the cavity assembly 20 and a high-voltage transformer 35 and a high-voltage capacitor 37 for supplying high-voltage power to the magnetron 33 are installed . The magnetron 33, the high-voltage transformer 35 and the high-voltage capacitor 37 are installed on the bottom plate 31 to be transmitted to the vent motor assembly 40 through the intake guide 50, Lt; / RTI >

A wave guide 39 for guiding the microwave generated in the magnetron 33 into the cavity assembly 20 is mounted on the lower surface of the magnetron 33 and the side surface of the cavity assembly 20 at the same time.

A vent motor assembly 40 is mounted at the rear of the upper surface of the cavity assembly 20 to suck ambient air through the intake ports 41 at both ends and discharge the air to the outside. The vent motor assembly 40 forms an air flow for cooling the hood function and the electrical components of the electric room 30. That is, the air for the hood function is sucked through the one inlet port 41 and the air for the cooling function is sucked through the other inlet port 41.

An intake guide 50 is provided at a portion corresponding to the front surface of the electric field chamber 30 so that external air can be sucked into the electric field chamber 30 by the driving force of the vent motor assembly 40. That is, the intake guide 50 includes an intake grill 51, an air guide 53, a direction adjusting blade 55, and a connecting portion 57. By the suction force of the vent motor assembly 40, The flow of the air flowing into the electric field chamber 30 is guided in a predetermined direction.

The intake grill 51 is installed at the front of the electric room 30 at the upper end of the cavity assembly 20, The intake grill 51 is provided with a porous portion 51a for allowing air to pass therethrough. The porous portion 51a is formed not only at a portion of the intake grill 51 but at a predetermined interval .

The air guide 53 is provided at both ends of the intake grill 51, respectively. At this time, the air guide 53 is installed at a predetermined angle with the intake grill 51 to guide air passing through the intake grill 51 in a specific direction. This is because the width of the suction grille is set to correspond to the width of the electric room 30 but the electric parts installed in the electric room 30 are arranged side by side on the side of the electric room 30, 51 in the direction in which the electric component is installed.

The direction adjusting vane 55 extends from the end of the air guide 53 so that the air guided by the air guide 53 is supplied to a specific electric component such as the high voltage capacitor 37, the high voltage transformer 35 and the magnetron 33 in order to adjust the direction more precisely. In addition, the direction adjusting vane 55 can be adjusted to have an arbitrary angle with the air guide 53. Therefore, if the position of the electric component is changed or the flow of air is to be changed, the flow of the air can be changed by correspondingly adjusting the direction adjusting vane 55.

The direction adjusting vane 55 may be provided corresponding to the upper and lower ends of the end of the air guide 53. However, in the present embodiment, the direction adjusting vane 55 is formed only at a lower portion of the end. This is to induce the flow of air to the lower part of the electric room 30 to cool the electrical components more efficiently.

A connecting portion 57 may be provided at an end of the air guide 53. At this time, if the direction adjusting blade 55 is provided at the bottom of the end of the air guide 53 as described above, the connecting portion 57 may be provided on the upper end of the air guide 53. The connection unit 57 connects each end of the air guide 53 to prevent an angle change between the air guide 53 and the intake grill 51.

However, the air guide 53, the direction adjusting vane 55, and the connecting portion 57 may be formed of one plate provided on the intake grill 51. That is, the intake guide 50 according to the present invention can be manufactured by bending the plate material at a predetermined angle and cutting the central portion thereof and connecting both ends of the plate material to the intake grill 51. Here, the bent portion of the plate member will be the air guide 53 and the connecting portion 57, and the cut portion will be the direction adjusting blade 55.

A partition wall (60) is installed on the upper surface of the cavity assembly (20) to guide air flowing from the intake guide (50) to the vent motor assembly (40). The partition wall (60) divides the upper surface of the cavity assembly (20) into a portion communicating with the electric chamber (30) and a portion communicating with the electric chamber (30).

 Hereinafter, the operation of the electrical component cooling apparatus of the microwave oven combined with the hood according to the present invention will be described.

The vent motor assembly 40 provides a suction force for a hood function for discharging heat and smoke generated in an oven range installed in a lower portion thereof. In this embodiment, the ventilation motor assembly 40 generates an airflow for cooling the electrical components by the suction force provided by the ventilation motor assembly 40.

That is, microwaves must be supplied from the magnetron 33 into the cavity assembly 20 in order for the cooking cavity 20 to be cooked. In the microwave generating process, much heat is generated in the magnetron 33, the high-voltage transformer 35, and the high-voltage capacitor 37. The vent motor assembly 40 is driven to release the heat.

When the vent motor assembly 40 is driven, air is sucked from the outside through the intake guide 50 and flows into the electric room 30. The air sucked into the electric field chamber (30) flows toward the vent motor assembly (40). Pressure transformer 35, the high-voltage capacitor 37, and the magnetron 33 during the flow process.

More specifically, external air passes through the intake grille 51 by the suction force of the vent motor assembly 40. At this time, the intake grill 51 is formed with the lid 51a over the entire surface thereof, so that the air passes over the entire surface of the intake grill 51. [

The air thus passed is concentrated in a specific direction by the air guide 53. This is to induce air to a position where electrical components are installed by forming a specific flow in the air that has passed through the intake grill (51). To this end, a direction adjusting blade 55 is further provided at an end of the air guide 53 to help guide the air by the air guide 53. At this time, the direction adjusting vane 55 can arbitrarily adjust its direction so that the cooling efficiency of the electric component can be selectively changed.

The air that has passed through the intake guide 50 passes through the high-voltage capacitor 37, the high-voltage transformer 35, and the magnetron 33, which are arranged in a substantially row, as indicated by arrows in FIG. .

The angle of the air guide 53 with respect to the intake grill 51 can be changed by the flow of air by the suction force of the vent motor assembly 40. In order to prevent this, the connecting portion 57 is provided to connect the respective ends of the air guide 53 to help the air guide 53 maintain its direction in spite of continuous use.

According to the embodiment of the present invention operated as described above, since the airflow is concentrated by the intake guide 50 and flows straightly to the vent motor assembly 40, Cooling of electrical components on the plate 31 is more efficient.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

As described above, the present invention is provided with an intake guide for guiding air introduced from an intake grill in a direction in which electric component parts are installed. Therefore, according to the present invention, the air flow generated by the vent motor assembly is concentrated on electrical components, thereby improving the cooling efficiency of the electrical components and improving the reliability of electrical components.

Further, the present invention reduces the rotation speed of the motor when the motor is operated to obtain the same cooling power as in the conventional art, so that it has a low noise structure and low power consumption.

In addition, since it is not necessary to use a heat-resistant material in the structure of electrical parts, the material cost of electrical parts is reduced.

Claims (5)

An electric component mounted on an electric field chamber provided on the cavity assembly to generate a microwave transmitted into the cavity assembly, A vent motor assembly installed on the cavity assembly to form an air flow for a hood function and an air flow for radiating the electric components, And an intake guide for guiding a flow of air introduced into the electric room by a suction force of the vent motor assembly in a predetermined direction to cool the electric component. The intake guide An intake grill to which air for cooling the electric chamber is introduced, And an air guide provided at both ends of the intake grill so as to form a predetermined angle with the intake grill and guiding the sucked air. delete The microwave oven according to claim 1, wherein the intake guide further comprises a direction adjusting blade extending from an end of the air guide to adjust the direction of the air toward the specific electric component of the electric room. Electric part cooling device. The microwave oven according to any one of claims 1 to 3, wherein the intake guide further comprises a connection part for connecting the ends of the air guide to each other to prevent an angle change between the air guide and the intake grill. Electric parts cooling system. 5. The microwave oven according to claim 4, wherein the air guide, the direction adjusting blade and the connecting portion are formed by a plate member provided on the suction grille and are formed by bending and cutting the plate member, respectively. Parts Cooling System.

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