KR0117258Y1 - Cooling apparatus for microwave oven - Google Patents

Abstract

The present invention relates to a cooling device of a microwave oven, and to increase the air flow rate for cooling the magnetron and high-pressure transformer, and to prevent the heat of the motor for driving the cooling fan to be transferred to the magnetron and high-voltage transformer to improve the cooling efficiency. An object of the present invention is to provide a cooling device for a microwave oven, which is configured to be raised.

The motor 7 and the motor installed on one side of the electrical equipment compartment for cooling the magnetron 5 installed on the upper side of the electrical equipment compartment 4 and the high-pressure transformer 5 installed on the interior lower side of the electrical equipment compartment 4. In a microwave oven cooling apparatus including a cooling fan (9) coupled to the shaft (8) of the rotation in accordance with the driving of the motor, the motor is installed on the ceiling 41 of the battlefield or outside the ceiling of the battlefield The shaft of the motor includes a flexible stay 81 and an electric wire 82 rotatably installed in the hollow 811 of the flexible stay, extending downward from the motor along the side of the electric compartment, and the cooling fan. Is coupled to the end of the electric wire so as not to be coaxial with the motor is characterized in that it is directed between the magnetron and the high-voltage transformer. Therefore, since the suction path behind the cooling fan 9 is not blocked, the suction amount is increased, and the cooling fan 9 and the motor 7 are not placed on the same axis and are separated from each other. The heat hardly enters the cooling fan 9.

Description

Microwave chiller

The present invention relates to a cooling apparatus for a microwave oven, and more particularly, to a cooling apparatus for a microwave oven, which is configured to effectively cool a magnetron and a high voltage transformer installed inside an electric room of a microwave oven.

In general, as shown in FIG. 1, the main body 10 of the microwave oven includes a magnetron 21 and an electric compartment in which a high pressure transformer 22 is installed to heat a food compartment accommodated in the cooking chamber and the interior of the cooking chamber. 20).

The magnetron 21 includes an anode, a filament for emitting hot electrons in the center axis of the anode, a plurality of vanes formed radially inside the anode, and a lower end disposed at an upper end of the anode. And a magnet for generating a magnetic pole, an upper pole piece and a lower pole piece for receiving a magnetic force line from the magnet to form a magnetic field in a vertical direction, and an antenna fixed to the vane to emit electromagnetic waves of high frequency to the cooking chamber. Since heat is generated inside the high temperature, it must be cooled. In addition, the high voltage transformer is installed to boost the voltage, and since the high temperature heat is generated inside the high voltage transformer, it is necessary to cool it.

Typically, the magnetron 21 is installed on the upper side of the electric compartment 20, the high-voltage transformer 22 is installed on the inner lower side of the electric compartment 20, the motor 24 is the inner side of the electric compartment 20 The cooling fan 23 is installed on the shaft 241 of the motor 24, and the magnetron 21 and the high voltage transformer 22 are rotated by the rotation of the cooling fan 23 according to the driving of the motor 24. ) Is cooled.

However, in the conventional microwave oven, since the cooling fan 23 is directly connected to the shaft 241 of the motor 23 in front of the motor 23, the amount of suction air is reduced by the area occupied by the motor 23, so that the magnetron 21 ) And the amount of air blown out toward the high pressure transformer 22 decreases, resulting in a decrease in cooling efficiency.

In addition, since the motor 24 is located behind the cooling fan 23, the heat generated from the motor 24 is driven toward the cooling fan 23 by the rotation of the cooling fan 23 as the motor 24 is driven. Since it is sucked and transferred to the magnetron 21 and the high voltage transformer 22, the cooling of the magnetron 21 and the high pressure transformer 22 is rather adversely affected.

The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to provide a cooling device for a microwave oven configured to increase the cooling air volume for cooling the magnetron and the high pressure transformer to increase the cooling efficiency for the magnetron and the high pressure transformer. It is done.

Another wood base of the present invention is a microwave cooling device, which is configured to further increase the cooling efficiency by preventing the heat of the motor for driving the cooling fan from being sucked toward the cooling fan by the rotation of the cooling fan and blowing to the magnetron and the high-pressure transformer. To provide.

1 is a schematic side cross-sectional view showing a microwave oven in which a conventional cooling device is installed

Figure 2 is a schematic side cross-sectional view showing a microwave oven with a cooling device according to the present proposal

＊ Explanation of symbols for main parts of drawing

3: body 4: full length room

5: magnetron 6: high voltage transformer

7: motor 8: axis of motor

9: cooling fan 41: ceiling of battlefield

81: flexible stay 82: electric wire

In order to achieve the above object, the cooling device according to the present invention, the motor and the motor which is installed on one side of the battlefield to cool the magnetron is installed on the inside of the battlefield and the high-pressure transformer installed in the inner lower side of the battlefield A cooling apparatus of a microwave oven, comprising: a cooling fan coupled to an axis of the motor and rotating according to the driving of the motor, wherein the motor is installed outside the ceiling of the battlefield or the ceiling of the battlefield, and the shaft of the motor is a flexible stay and the It consists of an electric wire rotatably installed in the inside of the flexible stay extends down from the motor along the side of the electric chamber, the cooling fan is coupled to the end of the electric wire to face between the magnetron and the high-voltage transformer It is characterized by.

According to the cooling apparatus of the present invention configured as described above, since there is no object blocking the suction path of the air in the rear of the cooling fan, the amount of air blown toward the magnetron and the high-pressure transformer is increased by increasing the amount of suction air. In addition, since the motor is installed outside the ceiling of the electrical equipment room or the ceiling of the electrical equipment chamber, which is slightly away from the position of the cooling fan, heat generated by the driving of the motor is hardly introduced into the cooling fan.

Other features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

As shown in FIG. 2, reference numeral 3 denotes a main body of a microwave oven, and the main body 3 includes a cooking chamber (not shown) in which food is stored and cooked, and an electrical equipment chamber for heating and cooking food stored in the cooking chamber. It is divided into (4).

The magnetron 5 is provided from the ceiling 41 of the electric compartment 4 to the inside of the electric compartment 4 so as to emit a high frequency heat source due to the generation of hot electrons toward the cooking chamber, and at the bottom of the electric compartment 4, a voltage is provided. A high voltage transformer 6 for boosting the pressure is provided. That is, the magnetron 5 and the high voltage transformer 6 are installed in the form of facing each other in the upper and lower parts of the electric chamber 4.

According to the present invention, the motor 7 is installed on the ceiling 41 of the electric compartment 4 as described above. The shaft 8 of the motor 7 is a flexible stay 81 having a hollow 811 and a light wire 82 installed inside the flexible stay 81 so as to be rotated according to the driving of the motor 7. Is made of. The shaft 8 of the motor thus formed extends down from the motor 7 along the side of the electric chamber 4 so that the lower end is supported and bent through the support member 83 so that the free end of the shaft 8 is magnetron. It faces between (5) and the high voltage transformer (6). The cooling fan 9 is coupled to the free end of the shaft 8, strictly, at the end of the all-wire wire 82. Therefore, the cooling fan 9 may be rotated by the electric wire 82 rotated by the driving of the motor 7.

Since the electric wire 82 is rotated in a somewhat curved state, since it receives a strong twist, it is preferable that a plurality of steel wires are twisted with each other like a general electric wire to sufficiently endure it.

Here, only the motor 7 is installed and illustrated in the ceiling 41 of the electric compartment 4, but according to the present invention, the motor 7 is external to the electric compartment 4, i.e., the upper panel of the main body 3; And may be provided between the ceiling (41), in addition to the motor 7 and the cooling fan (9) if it is made not to be placed on the same axis, all should be included in the technical scope of the present invention.

When the cooling device configured as described above is provided in the microwave oven, since there is no motor 7 behind the cooling fan 9 and thus there is no object blocking the air intake path, the amount of intake air is increased. Therefore, the amount of blown air blown from the cooling fan 9 toward the magnetron 5 and the high pressure transformer 6 is significantly increased as compared with the prior art, so that the magnetron 5 and the high pressure transformer 6 can be easily cooled. In addition, since the motor 7 is installed in the ceiling 41 of the electric compartment 4 slightly away from the position of the cooling fan 9, the heat generated from the motor 7 is driven by the driving of the motor 7. Since it hardly flows into the (9) side and is not transmitted to the magnetron (5) and the high voltage transformer (6), it does not adversely affect the cooling of the magnetron (5) and the high voltage transformer (6), and the motor (7) When installed outside of (4), the heat of the motor 7 does not flow into the cooling fan 9 at all.

According to the cooling device according to the present invention configured as described above, the motor 7 is present in the rear of the cooling fan 9 as the motor 7 is installed on the ceiling 41 of the electrical equipment room 4 or the outside thereof. Since there is no object blocking the air intake path, the suction air volume is increased, and thus the amount of air blown from the cooling fan 9 toward the magnetron 5 and the high pressure transformer 6 is significantly increased as compared with the conventional magnetron (5). ) And the cooling efficiency for the high-pressure transformer (6) is significantly increased.

In addition, the heat generated from the motor 7 in accordance with the driving of the motor 7 by the motor 7 is not located on the same axis as the cooling fan 9, but slightly separated or separated from the position of the cooling fan 9. Since the heat is hardly introduced into the cooling fan 9 or completely shut off, the heat of the motor 7 is not transferred to the magnetron 5 and the high-pressure transformer 6 so that the cooling efficiency is further increased.

Claims (1)

The motor 7 and the shaft of the motor installed at one side of the electric compartment to cool the magnetron 5 installed in the upper part of the electric compartment 4 and the high voltage transformer 5 installed in the internal lower part of the electric compartment 4 In the cooling apparatus of the microwave oven coupled to 8) and includes a cooling fan (9) to rotate in accordance with the driving of the motor, the motor is installed on the ceiling 41 of the electrical equipment room or outside the ceiling of the electrical equipment room, Its axis is composed of a flexible stay 81 and the electric wire (82) rotatably installed in the hollow 811 of the flexible stay extends down along the side of the electric chamber from the motor, the cooling fan of the electric wire Cooling apparatus of the microwave oven characterized in that the end is coupled so as not to be coaxial with the motor to face between the magnetron and the high-voltage transformer.