KR20010064862A - Machining room cooling device for ventilation hooded microwave oven - Google Patents

Abstract

PURPOSE: An electrical component chamber cooling structure for combination hood/microwave oven is provided to achieve an improved cooling efficiency by allowing the magnetron to be directly cooled by the air produced from the cooling fan, while minimizing air flow resistance. CONSTITUTION: A cooling structure comprises a magnetron(34) mounted in an electrical component chamber(40) of a microwave oven and which oscillates microwave; and a cooling fan(30) interposed between the magnetron and the grille, at the front upper portion of the electrical component chamber, and which is installed to be slightly inclined toward the magnetron arranged in the rear lower portion of the electrical component chamber. The cooling fan is disposed in the vicinity of a grille(32) mounted at the front upper end of the microwave oven, thus minimizing flow resistance of the air being sucked by the cooling fan through the grille. Since the air flow produced from the cooling fan directly cools the magnetron, maximized cooling efficiency is obtained.

Description

Machining room cooling device for ventilation hooded microwave oven

The present invention relates to an electric compartment cooling structure of a microwave oven for a hood, and more particularly, an air flow in a cooling fan installed in the electric compartment can directly cool the magnetron, and minimizes flow resistance of the air flow for cooling. It relates to an electric compartment cooling structure of a hood and microwave oven configured to be able to.

With reference to Figures 1 to 3 will be described with respect to the configuration of a general microwave oven. As shown in the figure, a hood-use microwave oven (hereinafter also referred to simply as a microwave oven) includes a cavity 2 which is a space for heating food and an electrical equipment chamber 4 provided on the side surface of the cavity.

In the electric compartment 4, components for supplying microwaves into the cavity 2 are incorporated. That is, the electric chamber 4 is provided with a magnetron 12 for oscillating microwaves, and a high voltage transformer 14 for applying high pressure to the magnetron 12.

When the microwave is generated and supplied into the cavity to operate the microwave oven, heat is generated in the high voltage transformer 14 and the magnetron 12. In order to dissipate the high-pressure transformer 14 and the magnetron 12 that generate heat in this way, a cooling fan 18 is installed at the upper end of the electric compartment 4.

The cooling fan 18 sucks outside air through the intake unit 3 provided on one side of the grill at the upper front of the microwave oven. And the cooling fan 18 forms the flow of the air which goes directly downward in the upper end part of the electric chamber 4. A part of the airflow formed by the cooling fan 18 cools the magnetron 12 and then flows into the cavity 2 through the cavity inlet 2b formed on the side surface 2a of the cavity. The other part of the airflow generated by the cooling fan 18 cools the high-pressure transformer 14 and the like via the lower part of the electric compartment 4, and then the bottom of the cavity and the microwave as shown by the arrows. Via the space between the bottom of the exhaust, it is exhausted through the grill on the upper surface of the microwave oven.

However, looking at the structure as described above, it can be seen that the cooling fan 18 is installed at a relatively far position from the intake portion 3 of the grill for sucking the outside air, as is clearly shown in FIG. The fact that the cooling fan 18 is provided at a position far from the intake unit 3 may point out the disadvantage that the efficiency is lowered when the outside air is sucked into the microwave oven by the cooling fan 18. That is, there is a disadvantage in that the flow path resistance is large until reaching the cooling fan 18 through the intake unit 3.

As is apparent from FIG. 1, since the cooling fan 18 and the magnetron 12 have substantially similar horizontal positions, the airflow generated in the cooling fan 18 is directly connected to the magnetron 12. You won't be hit. Therefore, the lower end of the cooling fan 18 is provided with a guide member 7 for guiding a part of the wind of the cooling fan 18 to the magnetron 12 side. By the guide member 7, a part of the wind in the cooling fan 18 is guided to the magnetron 12 side to cool the magnetron 12 and then flow into the cavity through the cavity inlet 2b.

However, since the wind from the cooling fan 18 is not directly supplied to the magnetron 12 side, there is a disadvantage in that the cooling efficiency is significantly reduced. In addition, although the airflow is guided to the magnetron 12 through a separate guide member 7, the flow resistance of the airflow downward from the cooling fan 18 is further increased by the guide member 7. There are disadvantages.

According to the structure of the conventional electric room as described above, due to the relative position of the cooling fan 18 and the magnetron, the heat dissipation is inefficient, as well as a lot of flow resistance in the air flow formed by the cooling fan. It will be appreciated that there is a disadvantage.

An object of the present invention is to provide a cooling structure that can more efficiently cool the internal parts of the electric compartment of a microwave oven with a hood, as well as minimize the flow resistance of the airflow.

1 is a front sectional view of a conventional microwave oven.

Figure 2 is a side cross-sectional view of a conventional microwave oven.

3 is a plan view of a conventional microwave oven.

4 is a side cross-sectional view of the microwave oven of the present invention.

5 is a plan view of the microwave oven of the present invention.

6 is a front sectional view of the microwave oven of the present invention.

Explanation of symbols on the main parts of the drawings

30 ..... Cooling fan 32 ..... Grill

34 ..... Magnetron 36 ..... Cavity inlet

38 ..... high voltage transformer 40 .....

42 ..... Cavity

The electric compartment cooling structure of the hood-use microwave oven according to the present invention for achieving the above object is a magnetron is installed in the electric compartment to oscillate the microwave; The technical gist of the present invention is to include a cooling fan installed between the magnetron and the grill at a front upper end of the battlefield and installed slightly inclined toward the rear side.

According to the configuration of the present invention, the cooling fan is installed closest to the grill at the top of the front of the microwave oven, it is possible to minimize the flow resistance of the air flow sucked through the grill by the cooling fan. In addition, the airflow by the cooling fan can directly cool the magnetron, maximizing the cooling efficiency.

According to one embodiment of the present invention, the magnetron is also installed in an inclined state toward the rear in the same manner as the cooling fan, and is configured to be easily cooled by the airflow in the cooling fan.

According to another embodiment of the present invention, the cavity inflow portion communicating with the cavity is formed in the rear lower side of the magnetron corresponding to the same line of the cooling fan and the magnetron, so that the airflow through the magnetron can flow directly into the cavity inflow portion. It is configured to be.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

As shown in FIG. 4 and FIG. 5, the cooling fan 30 is provided in the front part so that the cooling fan 30 may be adjacent to the grill 32 for the front surface of a microwave oven for hoods. Since the cooling fan 30 is installed at a position adjacent to the grill 32, when the cooling fan 30 is operated, the distance from the grill 32 is very short. It is significantly reduced. This means that the operation efficiency increases during the operation of the cooling fan 30.

In addition, according to the present invention, the cooling fan 30 is formed to have a constant inclination angle toward the rear. Therefore, the airflow formed by the cooling fan 30 is formed with a slight inclination toward the rear, which is different from the point where the conventional cooling fan 30 forms an airflow facing directly downward. will be. In this case, the inclination angle of the cooling fan 30 should be set to 45 degrees or less, which will be described later. This is because it must be able to reach) at the same time.

Looking at the interior of the battle room 40, the magnetron 34 is installed in a position that can be exposed to the air flow generated from the cooling fan 30 inclined toward the rear. This means that the air flow generated in the cooling fan 30 comes into contact with the magnetron 34 without any other guide member, so that the air flow generated in the cooling fan reaches the magnetron 34 without flow path resistance. . In addition, the magnetron 34 is also preferably installed in a slightly inclined state toward the rear in the same manner as the cooling fan, and an installation example in which the magnetron 34 is installed in this inclined state will be confirmed.

In summary, it can be seen that the cooling fan 30 is provided between the magnetron 34 and the suction port grille 32. And the cooling fan 30 is installed with slight inclination toward the magnetron 34 of the rear lower side.

And a high voltage transformer 38 is provided at the lower end of the electrical equipment room. The high pressure transformer 38 is also configured to be directly exposed to the air blowing from the cooling fan 30, like the magnetron 34. That is, since the cooling fan 30 according to the present invention is installed in a state slightly inclined toward the rear side, as described above, some air is supplied to the magnetron 34 and other air is the high pressure transformer 8. You will be in direct contact with

A cavity inlet 36 is formed at the rear end of the magnetron 34 and formed into a plurality of vent holes. The cavity inlet 36 is a portion in which the airflow that cools the magnetron 34 and the high-pressure transformer 38 flows into the cavity 42 in the electric compartment. In addition, according to the present invention, it can be seen that the cavity inflow portion 36 is provided within a straight line range of the cooling fan 30 installed in a substantially inclined state. Therefore, the air flow generated in the cooling fan 30 is cooled while passing through the magnetron 34, and then can be directly guided to the cavity inlet 36 formed at the lower end of the rear end thereof, thereby cooling the magnetron 34. Since the airflow can be directly introduced into the cavity 42, the flow of air in the electrical equipment room is remarkably improved.

Next, the overall air flow and its features of the cooling structure according to the present invention configured as described above will be briefly described.

When the microwave oven is driven, the cooling fan 30 is operated to form an airflow for cooling. At this time, since the outside air flowing through the grill 32 during operation of the cooling fan 30 has little flow path resistance, the amount of airflow generated in the cooling fan 30 is higher than that of the conventional one under the same conditions. Can be. This advantage is due to the fact that the cooling fan 30 is actually installed at the most front side in the electrical equipment room 40 to configure the distance between the grill 32 and the cooling fan 30 in the shortest distance.

The cooling airflow generated in the cooling fan 30 directly cools the magnetron 34 by a slight inclination angle of the cooling fan, and at the same time, the high pressure transformer 38 installed on the bottom surface of the electric compartment 40. It can also cool. In addition, the airflow cooling the magnetron 34 may flow into the cavity 42 through the cavity inlet 36 formed at the rear end lower side of the magnetron 34.

The airflow guided from the cooling fan 30 to the lower high pressure transformer 38 cools the high pressure transformer 38 and then cools the high pressure transformer 38 through the bottom portion of the electrical compartment, as shown in FIG. It is exhausted between 42a) and the bottom surface 44 of the outer case of the microwave oven. In this way, the air guided between the cavity bottom surface 42a and the bottom surface 44 of the outer case is guided along the passage 46 provided on the opposite side of the electric compartment 40, and then the microwave oven is driven by the exhaust motor 46. Is exhausted to the outside, and this exhaust path is substantially the same as the conventional one.

As described above, according to the present invention, the cooling fan 30 installed in the electric compartment 40 in the hood-only microwave oven is installed in the front most adjacent to the grill 32, but installed to have a slight inclination toward the rear. In addition, the basic point is that the magnetron is installed on the path of the air flow generated by the cooling fan 30.

Within the basic technical scope of the present invention, of course, many other modifications are possible to those skilled in the art. That is, other modifications may be made within the scope of the technical gist of the present invention as it is.

According to the present invention as described above it can be expected the following effects.

Cooling fan 30 according to the present invention is installed in the front portion of the electric chamber 40 so that the distance to the grill 32 is the shortest, the flow path resistance of the outside air sucked is significantly reduced compared to the conventional . Therefore, it is possible to secure a sufficient air flow for cooling by increasing the driving efficiency of the cooling fan (30).

In addition, according to the present invention, the airflow generated in the cooling fan 30 directly cools the high pressure transformer 38 and the magnetron 34, and the airflow cooling the magnetron 34 is configured to directly flow into the cavity. It is. Therefore, it is possible to smoothly flow the air in the interior of the electric compartment 40, thereby effectively dissipating the magnetron.

Claims (3)

A magnetron installed in the battlefield to oscillate the microwave; An electric heating chamber cooling structure for a microwave oven comprising: a cooling fan installed between the magnetron and the grill at a front upper end of the electric compartment and installed in a slightly inclined state toward the rear. 2. The electric compartment cooling structure of a microwave oven according to claim 1, wherein the magnetron is also installed in an inclined state toward the rear side like the cooling fan. 3. The electric chamber cooling structure of a microwave oven according to claim 1 or 2, wherein a cavity inflow portion communicating with the cavity is formed in the rear lower side of the magnetron corresponding to the same line as the cooling fan and the magnetron.