KR19990008858U - Air suction structure of microwave oven - Google Patents

Abstract

The present invention is to provide an air intake structure of the microwave oven to reduce the air friction of the outside air introduced into the machine room to reduce the noise generation and at the same time smooth the flow of the incoming air.

To this end, the present invention is composed of a fan motor 31 and a fan blade 32, a blower (A) for introducing external air into the machine room 70, and the back panel 30 is attached to the blower (A) In the air intake structure of the microwave oven comprising a plurality of air intakes 33 formed in one side, the outside of the fan blades 32, the outside air flowing into the machine room 70 in accordance with the rotation of the fan blades 32 The plurality of air inlets 33 are formed in a long hole shape and radially formed so that the air inlets 33 are inclined in an oblique line in the air inlet 33 so that external air flows in a diagonal line in the rotation direction of the fan blades 32. Each of the air inlet 33 is characterized in that the curved guide plate 34 protruding in the inner direction of the back panel 30 is coupled.

Description

Air suction structure of microwave oven

The present invention relates to a microwave oven for heating and cooking food using a high frequency oscillated from the magnetron, in particular to reduce the friction of the air flowing into the machine room of the microwave oven to reduce noise and to smoothly flow the incoming air It relates to the air intake structure of the.

In general, microwaves (2450MHz high frequency) oscillating from the magnetron is irradiated to food (dielectric), and according to the frequency of the irradiated microwave molecules of the food active collision collision occurs with each other, and accordingly Dielectric heating is used to heat and cook by heating.

As described above, the conventional microwave oven using the dielectric heating, as shown in Figure 1, of the cavity 10, the front panel 20, the back panel 30, the base panel 40 and the outer panel 50 It is partitioned into a cooking chamber 60, which is a space for heating and cooking food by combining, and a machine room 70, which is a space where various core members of the microwave are disposed.

The door 100 for opening and closing the opening of the cooking chamber 60 is hinged to the front surface of the cooking chamber 60, and the rotating plate 90 for seating and cooking food in the cooking chamber 60 is rotated by the power of the motor. It is seated on the roller member 60.

The control panel 110 is fixed to the front of the machine room 70, the control panel 110 is provided with a control unit 120 for setting the operation control of the microwave and heating time conditions according to the food.

In addition, the machine room 70 is a high voltage transformer for generating electricity of high voltage (not shown), a magnetron for generating a high frequency by receiving the high voltage of the high voltage transformer, and a high frequency generated from the magnetron to guide the cooking chamber 60. The waveguide is mounted.

Referring to the process of cooking food with a microwave oven configured as described above are as follows.

First, the door 100 is opened, the food is placed on the upper surface of the rotating plate 90 in a balanced manner, and then the door 100 is closed. Then, by pressing the operation button of the control unit 120, the heating condition is selected and the power is turned on. Will be authorized.

When the power is applied as described above, the rotating plate 90 is rotated as the roller member 80 disposed in the cooking chamber 60 is rotated by the power of the motor.

In addition, a high voltage is generated in the high voltage transformer due to the power supply, and the magnetron received the high voltage of the high voltage transformer generates microwaves.

The microwaves generated in the magnetron are introduced into the cooking chamber 60 according to the guide of the waveguide, and the microwaves are irradiated onto the food seated on the upper surface of the rotating plate 90 on which the microwaves are rotated. The same thermal energy conversion takes place and the food is heated and cooked.

On the other hand, since a lot of heat is generated in the high-pressure transformer and the magnetron during the cooking process should be cooled.

Accordingly, a blower A for introducing external air to cool the inside of the microwave oven to the rear of the magnetron is attached to the back panel 30.

That is, as shown in Figures 2 and 3, the blower (A) is connected to the fan motor 31 and the shaft of the fan motor 31 is driven by receiving power from the high-voltage transformer, the fan motor It consists of a fan blade 32 for sucking the external air in accordance with the driving of the 31 to discharge in a predetermined direction, the air inlet 33 is the back panel 30 so that the outside air flows into the machine room 70. It is formed with a plurality of small holes in one side of the blower attachment part.

Therefore, the heat generated from the high voltage transformer and the magnetron is introduced into the machine room 70 by the external air passing through the air suction port 33 in accordance with the rotation of the fan blade 32 driven by the power supplied from the high voltage transformer. The inside of the machine room 70 is cooled by the introduced external air.

Then, the outside air cooled inside the machine room 70 is exhausted to the outside of the product under the guidance of a duct member (not shown).

At this time, the greater the amount of external air introduced into the machine room 70, the greater the cooling effect is required for the air intake structure that can easily suck the outside air.

However, as described above, in forming a plurality of air inlets 33 on the back panel 30 so that external air flows into the machine room 70, the air inlets 33 are simply the back panel 30. In addition to being formed in a plurality of small holes in the fan blades 32 and in a straight line, the external air flowing into the small air inlet 33 when the fan blades 32 rotate the fan blades 32 and the back panel 30 There is a problem that the noise generated by the air friction between the), as well as the flow of the external air flowing into the machine room 70 is not smooth.

Therefore, the present invention was devised to solve the above problems, and the object of the present invention is to reduce the friction of air from the outside air flowing into the machine room, reduce the occurrence of noise, and at the same time make the flow of the air flowing smoothly. It is to provide an air suction structure of.

The present invention made to achieve the above object, the fan motor and the fan blade is composed of a blower for introducing external air into the machine room, and the electronic device consisting of a plurality of air inlet formed on one side of the back panel with the blower In the air intake structure of the stove, the plurality of air inlet is formed in a long hole shape and radially so that the outside air is easily introduced into the machine room in accordance with the rotation of the fan blade.

1 is a perspective view showing a conventional microwave oven,

Figure 2 is a perspective view showing an air intake formed in a conventional back panel,

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a perspective view showing an air intake formed in the back panel according to the present invention,

5 is a partial cross-sectional view taken along line B-B in FIG. 4;

6 is a cross-sectional view taken along the line C-C of Figure 4 showing the air suction state in the direction of formation of the guide plate;

FIG. 7 is a cross-sectional view taken along the line D-D of FIG. 4 showing an air suction state according to the direction of formation of the guide plate.

Explanation of symbols on the main parts of the drawings

10: cavity 30: back panel

31: fan motor 32: fan wing

33: air intake 34: information board

60: cooking chamber 70: machine room

A: Blower

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

Figure 4 is a perspective view showing an air intake formed in the back panel according to the present invention, Figure 5 is a cross-sectional view taken along line B-B of FIG.

In the following description, the same reference numerals and reference numerals are used for the descriptions cited in the related art, and detailed description thereof will be omitted.

The present invention is divided into a cooking chamber 60, which is a space for heating and cooking food by the cavity 10, and a machine room 70, which is a space where various core members of the microwave are mounted, and the outside of the cavity 10 The exterior is formed by the outer panel 50 which wraps.

In the cooking chamber 60, a rotating plate 90 for seating and cooking food is seated on a roller member 80 that is rotated by the power of the motor.

Of course, the machine chamber 70 is provided with a magnetron, a high voltage transformer and a waveguide not shown.

At this time, the machine room 70 is connected to the fan motor 31 driven by receiving power from a high-voltage transformer, and the fan motor 31 is connected to the shaft of the fan motor 31 to suck the outside air according to the drive of the fan motor 31 Blower device (A) consisting of fan blades (32) for discharging in the direction is mounted, and a plurality of air inlets (33) in the long side of one side of the back panel (30) to which the blower (A) is attached In addition to being formed radially.

Here, a curved guide plate 34 is coupled to the air inlet 33 so that the outside air is twisted diagonally into the machine room 70 as the fan blades 32 rotate.

That is, the guide plate (2), as shown in Figure 6 and 7, the outside air is bent in the rotational direction of the fan blades 32 are sucked in each air inlet so that smoothly flowing without generating noise ( 33 is curved in the inner direction of the back panel 30 and is open in one direction in the same direction as the rotation direction of the fan blade (32).

Referring to the operation and effects of the present invention configured as described above are as follows.

First, when food is settled in the rotary dish 90 in the cooking chamber 60, the cooking unit and the cooking conditions are selected by operating the control unit 120, and then the power is applied to start cooking. In the high voltage is generated, the magnetron received the high voltage of the high-voltage transformer is generated a high frequency, the microwave is irradiated to the food, the thermal energy conversion inside the food is made food is heated and cooked.

At this time, since a large amount of heat is generated in the high-pressure transformer and the magnetron during the cooking process, the blower operates to cool it.

That is, as shown in FIGS. 5 to 7, the outside air is sucked into the machine room 70 through the air inlet 33 opened in the back panel 30 by the rotation of the fan 31. The outside air is bent and sucked in the rotational direction of the fan blades 32 by the guide plate 34 curved in a direction toward the back panel 30 at one side of the air suction port 33.

Therefore, conventionally, when the outside air is sucked in a straight line through the plurality of small air inlets 33, the air friction is less, the noise is reduced, as well as the bent suction in the same direction as the rotation direction of the fan blades 32 Flow of air becomes smooth.

As described above, according to the present invention, in the air suction structure of the microwave oven comprising a blower for introducing external air into the machine room, and a plurality of air suction ports formed on one side of the back panel with the blower, the air The inlet is formed in the back panel with a long hole shape and is radially formed, and a curved guide plate is coupled to the inside of each air inlet so as to be bent and sucked in the rotational direction of the fan blade, thereby allowing external air to flow through the air inlet. At this time, the noise generated by the air friction at the air intake is reduced and the outside air is sucked in the same direction as the rotational direction of the fan blade, so that the flow of the incoming air is smoothed.

Claims (2)

In the air intake structure of the microwave oven composed of a fan motor and a fan blade to blow external air into the machine room, and a plurality of air inlet formed on one side of the back panel to which the blower is attached, The air suction structure of the microwave oven, characterized in that the plurality of air inlet is formed in a long hole and radially formed so that the outside air is easily introduced into the machine room in accordance with the rotation of the fan blade. The method of claim 1, The air intake structure of the microwave oven is characterized in that the curved guide plates protruding toward the inner side of the back panel so that the outside air flows twisted diagonally in accordance with the rotation direction of the fan blade.