Microwave Air Flow Unit

专利摘要:
The present invention relates to an air flow apparatus of a microwave oven, comprising: a fan unit (6) for generating a negative pressure for sucking outside air, an suction guide blade (21) for guiding an air frame introduced from the outside, and the suction guide wing The air guide member 20 is formed integrally with the plate 1P which is formed together with the flow guide blade 22 for introducing the air transferred through the 21 into the cooking chamber 3 and forms one surface of the cavity 1. It is configured to include. The air flow apparatus of the microwave oven according to the present invention configured as described above reduces the number of parts compared to the prior art, thereby reducing the manufacturing cost and increasing the amount of air flow into the inside of the cooking chamber 3, resulting in dew formation inside the door 2 and the inside of the cooking chamber 3. There is an advantage that the phenomenon is minimized.
公开号:KR19990039894A
申请号:KR1019970060137
申请日:1997-11-14
公开日:1999-06-05
发明作者:손휘창
申请人:구자홍；엘지전자 주식회사；
IPC主号:

专利说明:

Microwave Air Flow Unit
The present invention relates to a microwave oven, and more particularly, to an air flow apparatus of a microwave oven that sucks external air into the inside of the microwave oven to cool the electric parts and prevent generation of water vapor inside the cooking chamber.
When operating a microwave oven, a lot of heat is generated from the magnetron and the high voltage transformer in the machine room. And inside the cooking chamber, hot steam is generated during cooking. Therefore, to cool the heat generated in the machine room to ensure the reliability of the electrical equipment and to discharge the steam generated in the cooking chamber to the outside of the cooking chamber flows by flowing the air outside the microwave oven inside.
1 and 2 show an air flow apparatus of a microwave oven according to the prior art, in which the suction guide 7 is fastened to the inner surface of the back plate 4. The suction guide 7 serves to guide the air sucked from the outside of the microwave oven.
The suction guide 7 is equipped with a fan unit 6 for sucking outside air. The fan unit 6 is provided with a fan 6F for generating negative pressure for sucking external air and a fan motor 6M for driving the fan 6F.
In addition, an air duct 8 is installed outside the side wall of the cavity 1 and guided through the suction guide 7 to cool the outside air cooling the magnetron 9 installed in the machine room 11. You will be guided inside.
When the air flow device of the microwave oven according to the prior art having the configuration as described above is operated to flow air in the interior of the microwave oven as follows.
When the fan motor 6M is driven to rotate the fan 6F, external air flows into the inside of the microwave oven through the air suction hole 5 which is perforated in the back plate 4. The air introduced into the microwave oven is guided by the suction guide 7 and transferred to the magnetron 9 and the high pressure transformer 10. The guide cantilever cools the magnetron 9 and the high pressure transformer 10.
The air passing through the magnetron 9 is transferred into the cooking chamber 3 through the air duct 8. In this way, the air delivered into the cooking chamber 3 contains water vapor inside the cooking chamber 3 and is discharged to the outside of the cooking chamber 3 to remove the steam inside the cooking chamber 3.
However, in the conventional air flow apparatus of the microwave oven as described above, only the air passing through the magnetron 9 is guided to the cooking chamber 3 side due to the presence of the air duct 8 so that the air duct 8 The amount of air introduced into the cooking chamber 3 is limited according to the size of. In particular, in the case of a small microwave oven, the amount of air flowing into the cooking chamber 3 is small, so that water vapor generated during cooking cannot be discharged smoothly, and dew condensation occurs in the inside of the door 2 and the cooking chamber 3. do.
In addition, the conventional air flow device is composed of a plurality of parts, such as the suction guide 7 and the air duct 8 is composed of separate parts, there is also a problem in that the workability of the assembly work is reduced and the manufacturing cost is high.
Therefore, an object of the present invention is to solve the problems of the prior art as described above, to maximize the amount of air introduced into the cooking chamber to facilitate the external discharge of the high temperature steam generated during cooking.
Another object of the present invention is to ensure the reliability of the components by smoothly cooling the components radiating during operation of the microwave oven.
Another object of the present invention is to reduce the components of the air flow apparatus of the microwave oven.
1 is a perspective view of a microwave oven equipped with an air flow apparatus of the microwave oven according to the prior art.
Figure 2 is an exploded perspective view showing that the air flow apparatus of the microwave oven according to the prior art is installed in the microwave oven.
3 is a perspective view of a microwave oven equipped with an air flow apparatus of the microwave oven according to the present invention;
Figure 4 is a perspective view showing the configuration of the upper plate is formed with an air guide member constituting the air flow apparatus of the microwave oven according to the present invention.
* Explanation of symbols for main parts of the drawings
1: cavity 2: door
3: cooking chamber 4: back plate
5: air inlet hole 6: fan unit
6M: Fan Motor 6F: Fan
7: suction guide 8: air duct
9: magnetron 10: high voltage transformer
11 machine room 20 air guide member
21: suction guide wing 22: flow guide wing
In order to achieve the object of the present invention as described above, the fan unit for generating a negative pressure for sucking the outside air, the suction guide wing for guiding the air introduced from the outside and the air delivered through the suction guide wing cooking chamber It is provided with an air flow apparatus of the microwave oven, characterized in that it comprises an air guide member which is formed integrally with the plate which is formed together with the flow guide blades to form one surface of the cavity.
The suction guide blade is cut in the distal end in a circular shape to prevent the vortex generated during the flow of air by the fan, the flow guide blade toward the cooking chamber to guide the air passing through the electrical components to the cooking chamber It is formed to be inclined to expand.
Referring to the accompanying drawings, preferred embodiments of the air flow apparatus of the microwave oven according to the present invention as described above in detail as follows. The same thing as the prior art is described with the same reference numerals.
Figure 3 is a perspective view of the full range equipped with an air flow apparatus of the microwave oven according to the present invention, Figure 4 is a perspective view showing the shape of the upper plate formed with the air guide member constituting the air flow apparatus of the microwave oven according to the present invention to be.
As shown in these figures, a fan unit 6 having a fan 6F and a fan motor 6M is mounted on the back plate 4. The fan 6F generates a negative pressure for introducing external air into the microwave oven, and when the fan 6F is driven, the outside air is provided through the air inlet hole 5 drilled into the back plate 4. Is introduced.
And the air guide member 20 is installed on the upper portion of the machine room (11). The air guide member 20 is integrally formed with the upper plate 1P forming the upper surface of the cavity 1. The air guide member 20 has a suction guide blade 21 for guiding the air sucked from the outside by the rotation of the fan (6F). The suction guide blade 21 is formed to protrude downward on the lower surface of the air guide member 20 and is positioned near the upper end of the fan 6F. Vortex flow occurs during the flow of air by the fan 6F. It was formed by cutting the distal end in a circle to prevent it from becoming.
In addition, the air guide member 20 protrudes from the outside and flows through the magnetron 9 and the lower air flow guide 22 to guide the air passing through the lower portion into the cooking chamber 3 toward the lower side of the machine chamber 11. Formed. The flow guide blade 22 shields one side of the magnetron 9 so that air passing through the magnetron 9 and air passing through the lower side of the magnetron 9 flow toward the cooking chamber 3. To this end, the flow guide blade 22 is formed to be inclined to extend toward the cooking chamber (3) side.
Referring to the action of the air flow apparatus of the microwave oven according to the present invention having the configuration as described above in detail as follows.
When the microwave oven is operated, the fan motor 6M is driven to rotate the fan 6F. When the fan 6F is rotated, outside air is introduced into the microwave oven through the air inlet hole 5 of the back plate 4.
Air introduced into the microwave oven is guided by the suction guide blade 21 and flows toward the magnetron 9 and the high pressure transformer 10. As such, the air flowing into the magnetron 9 and the high pressure transformer 10 cools the magnetron 9 and the high pressure transformer 10. Here, since the distal end portion of the suction guide blade 21 is formed to be cut in a circular shape, vortices can be smoothly flowed in the air flow guided by the suction guide blade 21.
The air passing through the magnetron 9 is guided by the flow guide blade 22 and flows to the cooking chamber 3. At this time, the flow guide blade 22 serves to introduce the air toward the cooking chamber 3, unlike the conventional air duct that the maximum flow rate per unit time is limited can guide more air to the cooking chamber. . This does not form an air passage in which the flow guide blade 22 is closed, but the other side of the air guide member 20 is opened except for the side shielded by the flow guide blade 22 and the upper surface shielded by the air guide member 20. Because it is.
Therefore, not only the air passing through the magnetron 9 but also the air passing through the bottom of the magnetron 9 can be delivered to the cooking chamber 3 through the flow guide blade 22, so that a larger amount of air is provided than the conventional cooking chamber. (3) flows in, so that the water vapor in the cooking chamber 3 can be discharged to the outside more smoothly.
The air flow apparatus of the microwave oven according to the present invention as described in detail above, the upper plate for forming the upper surface of the cavity of the air guide member that combines the suction guide wing and the flow guide wing as a conventional suction guide and air duct into one Since it is made integrally with, it is possible to reduce the total number of parts, thereby increasing the workability of assembly work and lowering the manufacturing cost.
In addition, a larger amount of air can be smoothly introduced into the cooking chamber by a flow guide wing for guiding the air into the cooking chamber, thereby minimizing dew condensation on the inside of the door and the cooking chamber.

权利要求:
Claims (3)
[1" claim-type="Currently amended] A fan unit for generating negative pressure for sucking outside air, a suction guide blade for guiding the air introduced from the outside, and a flow guide wing for introducing air transferred through the suction guide blade into the cooking chamber and formed in the cavity And an air guide member integrally formed on a plate forming one surface.
[2" claim-type="Currently amended] The air flow apparatus according to claim 1, wherein the suction guide blade has a distal end cut in a circular shape to prevent vortices from occurring during the flow of air by the fan.
[3" claim-type="Currently amended] The air flow apparatus of claim 1, wherein the flow guide wing is formed to be inclined to expand the cooking compartment side to guide the air passing through the electric component to the cooking compartment.

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同族专利:

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公开号 | 公开日

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1997-11-14|Application filed by 구자홍, 엘지전자 주식회사

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1997-11-14|Priority to KR1019970060137A

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1999-06-05|Publication of KR19990039894A

优先权:

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申请号 | 申请日 | 专利标题

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KR1019970060137A|KR19990039894A|1997-11-14|1997-11-14|Microwave Air Flow Unit|