KR200158620Y1 - Air circulating device of a microwave oven - Google Patents

Abstract

The present invention relates to an air circulation device of a microwave oven, and more particularly, to an air circulation device of a microwave oven capable of effectively cooling various electric components installed in an electronic equipment room.

The air circulation device of the microwave oven according to the present invention is provided with an air inlet is formed in the front upper part of the electrical equipment compartment, the interior of the electrical equipment compartment is provided with a receiving cover surrounding the magnetron, the internal air in the opening of the rear plate of the receiving cover A cooling fan for forced circulation is installed. A through hole communicating with the cooking chamber is formed on a side wall positioned inside the accommodating cover to discharge the air introduced into the accommodating cover, and an air exhaust hole is formed on an inner upper portion of the accommodating cover. Therefore, the high-pressure capacitor and the high-pressure transformer in the inner lower portion where the air sucked into the air inlet maintains a relatively low temperature are cooled first, and then the magnetrons that generate higher heat are sequentially cooled, thereby greatly cooling the electrical equipment room. It is to be improved.

Description

Microwave Air Circulator

The present invention relates to an air circulation device for a microwave oven, and more particularly, to an air circulation device for a microwave oven, which enables to effectively cool various electric components installed in an electric equipment compartment.

In general, a microwave is a cooking appliance that cooks food by firing a high frequency into a sealed cooking chamber and moving the molecular arrangement of the food through high frequency to generate heat.

As illustrated in FIGS. 1 and 2, the microwave oven is formed such that a cooking chamber 11 in which food is accommodated and an electrical equipment compartment 12 in which various electrical components are installed are partitioned inside the main body 10. The front surface of the main body 10 is provided with a door 13 for opening and closing the opening of the cooking chamber 11.

The magnetron 14 for oscillating a high frequency inside the cooking chamber 11 is provided in the cooking chamber 11 and the electrical equipment compartment 12 partitioned, and the magnetron 14 at the bottom of the electrical equipment compartment 12 has a high pressure. The high voltage transformer 15 and the high voltage capacitor 16 for applying power are provided. In addition, the air inlet 17 is formed at the rear of the electrical equipment compartment 12 so that outside air flows into the interior of the electrical equipment compartment 12 so as to cool various electric components therein. The cooling fan 18 and the motor 19 for driving the cooling fan 18 for forcibly blowing into the electrical equipment room 12 is installed. In addition, a plurality of through holes 20 are formed on sidewalls that divide the electrical equipment compartment 12 and the cooking compartment 11 so that air introduced into the electrical equipment compartment 12 flows toward the cooking compartment 11.

The conventional microwave oven configured as described above has a cooling fan 18 installed at the rear of the electrical equipment compartment 12 because high heat is generated in the magnetron 14, the high voltage transformer 15, the high-pressure capacitor 16, etc. inside the electrical equipment compartment 12 during cooking. ) Is driven to cool them. That is, when the cooling fan 18 is driven, the air introduced into the air inlet 17 behind the electrical equipment compartment 12 is blown into the electrical equipment compartment 12 to cool various electrical components therein, and the electrical power is introduced into the electrical equipment compartment 12. After the heat exchange with the components, the air flows into the cooking chamber 11 through the plurality of through holes 20 formed in the side wall.

However, the conventional microwave oven is dispersed by hitting the various electrical components installed in the interior of the electrical equipment compartment 12 through the air inlet 17 of the rear of the electrical equipment compartment 12. The phenomenon that the flow back to the cooling fan 18 occurs, there was a problem that the cooling effect of the electrical equipment compartment 12 is lowered.

In particular, among the various electrical components installed in the electrical equipment room 12, although the magnetron 14 is a device that generates high heat compared to the surrounding configuration, because the cooling to the same conditions as the surrounding devices, the utilization of the cooling wind There was a problem falling.

The present invention is to solve such a problem, the purpose of the present invention is to let the air flowing into the magnetron after passing through the high-pressure transformer and capacitor to maintain a relatively low temperature state of the electrical equipment compartment, while the air introduced into the interior It is to provide an air circulation device of the microwave oven to prevent the backflow of the to increase the cooling effect in the electrical equipment room.

1 is a perspective view showing the appearance of a conventional electronic level.

FIG. 2 is a sectional view taken along the line II-II 'of FIG. 1 to show the internal structure of the electrical equipment room.

3 is an exploded perspective view showing the structure of the microwave oven to which the present invention is applied.

FIG. 4 is a cross-sectional view taken along the line IV-IV 'of FIG. 3 to show the internal structure of the electrical equipment compartment.

* Explanation of symbols for main parts of the drawings

30: body 31: cooking chamber

32: electrical equipment room 40: magnetron

41: high voltage transformer 42: high voltage capacitor

50: air inlet 52: through hole

53: air outlet 60: accommodating cover

61: accommodating chamber 62: the rear plate of the accommodating cover

63: opening 70: cooling fan

80: non-return plate 81: vent

The air circulation device of the microwave oven according to the present invention for achieving the above object, and the main body formed so that the cooking compartment and the electrical equipment compartment is partitioned therein, and the magnetron is installed in the upper portion of the electrical equipment compartment to oscillate the high frequency to the cooking chamber; And a high pressure transformer and a high voltage capacitor installed in the lower part of the electrical equipment compartment to apply a high voltage to the magnetron, and a cooling fan installed inside the electrical equipment compartment to cool various electrical components inside the electrical equipment compartment to blow and blow outside air. A microwave oven comprising: an air inlet formed in a front upper portion of the electrical equipment compartment so that outside air flows into the electrical equipment compartment; A separate receiving chamber is formed to surround and surround the magnetron so that air introduced into the air inlet flows through the lower space of the electronic equipment compartment and flows toward the magnetron, and an opening is formed in the rear plate. And an accommodation cover having a cooling fan installed in the opening, the rear cover being inclined toward the front lower part from the rear upper part of the electrical equipment compartment such that the air discharge direction of the cooling fan faces the magnetron therein; A backflow prevention plate installed inside the accommodating cover between the magnetron and the cooling fan so that the air blown toward the magnetron by the driving of the cooling fan does not flow back; It characterized in that it comprises a plurality of through holes formed in communication with the inside of the cooking chamber in the interior of the accommodation cover to discharge the air introduced into the accommodation cover and the air outlet formed in communication with the outside from the inner upper portion of the accommodation cover to be.

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

As shown in FIG. 3, the microwave oven to which the present invention is applied is formed such that a cooking chamber 31 in which food is accommodated in the main body 30 and an electrical equipment compartment 32 in which various electric components are installed are partitioned. In addition, the upper part of the main body 30 is provided with a ventilation device to perform not only the cooking function of a general microwave oven, but also to perform a ventilation function for forcibly discharging the ambient air to the outside. That is, the microwave oven to which the present invention is applied is provided with a discharge duct 33 and a discharge grill 34 at the upper portion of the main body 30, and a ventilation fan 35 is installed at the rear upper end to outside the air in the kitchen space. It is provided with a ventilator for discharging or filtering and discharging back into the room.

As shown in FIG. 4, the electronics compartment 32 of the microwave oven includes a magnetron 40 for oscillating high frequency into the cooking chamber 31 and a high pressure for applying high voltage power to the magnetron 40. A transformer 41 and a high voltage capacitor 42 are provided. At this time, the magnetron 40 is fixed to the upper side wall partitioning the cooking chamber 31 and the electrical equipment compartment 32, the high-voltage transformer 41 and the high-pressure capacitor 42 is fixed to the bottom surface of the electrical equipment compartment (32).

On the other hand, the air circulation device for cooling the electrical equipment compartment 32 of the microwave oven according to the present invention is a pressure capacitor installed on the bottom surface of the outside air is introduced into the electrical equipment compartment 32 from the front upper portion of the main body 30 ( 42) and the surroundings of the high-pressure transformer 41 are sequentially cooled, and after cooling the magnetron 40 installed on the upper portion, some flow into the cooking chamber 31 and others are discharged to the outside. Hereinafter, the configuration of such an air circulation device will be described in detail.

An air inlet 50 is formed in the front upper part of the electrical equipment compartment 32 to allow the outside air to flow into the electronic equipment compartment 32, and the outer upper portion of the electrical equipment compartment 32 in which the air intake 50 is formed is formed of air. An inlet guide duct 51 is provided to connect the grill 34 and the air suction port 50 formed at the upper front of the main body 30 to guide the suction.

Inside the electrical equipment compartment 32, the outside air flowing into the air inlet 50 is allowed to flow toward the high-pressure capacitor 42 and the high-pressure transformer 41 installed at the lower side, while the periphery of the magnetron 40 is in the electrical equipment compartment. (32) The receiving cover 60 is formed to surround the magnetron 40 so as to be partitioned from the inside to form a separate housing chamber 61. Therefore, the air introduced into the electrical equipment room 32 through the air inlet 50 does not flow directly toward the magnetron 40, and is guided to the lower space by the outer surface of the accommodation cover 60, so that the high-pressure capacitor 42 and the high-pressure transformer The 41 is cooled first.

In addition, the rear plate 62 of the accommodation cover 60 located at the rear side of the electrical equipment compartment 32 has an opening 63 so that outside air guided to the lower portion of the electrical equipment compartment 32 can be introduced into the interior of the storage chamber 61. Is formed, and the opening 63 is provided with a cooling fan 70 that sucks air inside the electrical equipment compartment 32 and forcibly blows it toward the magnetron 40 inside the housing cover 60. The rear plate 62 of the housing cover 60, which is installed with 70, directs the air blown by the driving of the cooling fan 70 toward the magnetron 40, and is about 45 degrees to facilitate the intake of the lower air. It consists of inclined surfaces that make up the slope of. That is, the back plate 62 of the accommodation cover 60 is configured as an inclined surface toward the front lower portion of the electrical equipment compartment 32 from the rear upper portion of the electrical equipment compartment 32.

The cooking chamber 31 is provided on the inner sidewall of the storage chamber 61 partitioned by the housing cover 60 so that air introduced into the storage chamber 61 by the driving of the cooling fan 70 flows out toward the cooking chamber 31. A plurality of through-holes 52 are formed in communication with the inside of the air, and also the air outlet 53 is formed in the upper portion of the accommodating chamber 61 so that some air can be discharged to the outside. That is, some of the air flowing into the interior of the storage chamber 61 to cool the magnetron 40 flows into the cooking chamber 31 through the through hole 52, and the rest is discharged to the outside through the air outlet 53. Will be.

In addition, a backflow prevention plate 80 is installed between the magnetron 40 and the cooling fan 70 inside the storage chamber 61 to prevent the backflow of the air blown by the driving of the cooling fan 70. The non-return plate 80 is formed between the magnetron 40 and the cooling fan 70, and the air vent 81 is formed in the center, so that the heat exchanged with the magnetron 40 flows back toward the cooling fan 70. Will be prevented.

Next will be described the operation of the microwave oven according to the present invention configured as described above.

When power is applied and the microwave is operated, the power boosted by the high voltage capacitor 42 and the high voltage transformer 41 is supplied to the magnetron 40, and the magnetron 40 oscillates high frequency into the cooking chamber 31. The cooking is performed, but high heat is generated in the high-voltage capacitor 42, the high-voltage transformer 41, the magnetron 40, etc. in the electrical equipment room 32 during the operation.

At this time, when the cooling fan 70 inside the electrical equipment compartment 32 is driven, the outside air is introduced through the air inlet 50 provided in the front upper portion of the electrical equipment compartment 32, and the external air enters into the electrical equipment compartment 32. It is guided to the inner bottom by the outer surface of the installed receiving cover 60 to cool the high-pressure capacitor 42 and the high-voltage transformer 41 first. The high-pressure capacitor 42, the high-pressure transformer 41, and the like, which have undergone heat exchange, are introduced into the accommodating chamber 61 through the opening 63 formed in the rear plate 62 of the accommodating cover 60, and the magnetron 40. After cooling, it flows into the cooking chamber through the through hole 52 formed in the side wall or is discharged to the outside through the upper air outlet 53.

That is, the air circulation device according to the present invention first cools the high-pressure capacitor 42 and the high-pressure transformer 41 to maintain a relatively low temperature state, and then by sequentially cooling the magnetron 40 that generates higher heat than the electrical equipment It is possible to increase the cooling efficiency of the seal (32). In addition, once the air introduced into the storage chamber 61 is prevented from flowing back toward the cooling fan 70 by the backflow prevention plate 80, the internal cooling efficiency can be further increased.

As described in detail above, the microwave air circulation device according to the present invention is provided with a housing cover surrounding the magnetron in the interior of the electrical equipment room, a cooling fan is installed in the rear plate opening of the housing cover, electrical equipment room The air inlet is formed at the front of the upper portion, thereby cooling the high pressure capacitor and the high pressure transformer of the lower portion where the intake air maintains a relatively low temperature state, and then cooling the magnetron that generates higher heat than these sequentially, Since the air introduced into the cover does not flow back by the non-return plate, there is an effect that the cooling efficiency inside the electronics compartment is greatly improved.

Claims (1)

The main body 30 formed so that the cooking compartment 31 and the electrical equipment compartment 32 are partitioned inside, the magnetron 40 installed in the upper part of the electrical equipment compartment 32 so that a high frequency may be oscillated to the said cooking compartment 31, and The high voltage transformer 41 and the high voltage capacitor 42 installed in the lower part of the electrical equipment compartment 32 to apply a high voltage to the magnetron, and the inside of the electrical equipment compartment 32 to cool various electric components in the electrical equipment compartment 32. And a cooling fan (70) for sucking and blowing outside air, the microwave oven comprising: an air suction port (50) formed at an upper portion of the front of the electric equipment compartment (32) so that the outside air flows into the electric equipment compartment (32); A separate accommodation chamber 61 enclosing and surrounding the magnetron 40 so that the air introduced into the air inlet 50 flows toward the magnetron 40 after passing through the lower space of the electrical equipment compartment 32. And an opening 63 through which air is introduced into the rear plate 62, and a cooling fan 70 is installed in the opening 63, and the air discharge direction of the cooling fan 70 is An accommodating cover 60 formed to be inclined so that the rear plate 62 faces the front lower part of the electrical equipment room 32 so as to face the magnetron 40 therein; The cooling fan 70 is installed inside the accommodating cover 60 between the magnetron 40 and the cooling fan 70 so that the air blown toward the magnetron 40 by the driving of the cooling fan 70 does not flow back. A backflow prevention plate 80 having a vent 81 formed therein; In the upper portion of the receiving cover 60 and the plurality of through holes 52 and the inner cover of the receiving cover 60 formed in communication with the inside of the cooking chamber 31 in the receiving cover 60 to discharge the air introduced into the interior of the receiving cover 60 Microwave air circulation system comprising an air outlet (53) formed in communication with the outside.