KR200160232Y1 - Prevention structure of inverse current of exhaust gas for microwave oven - Google Patents

Abstract

The present invention relates to an exhaust backflow prevention structure of a composite microwave oven, and more particularly, to an exhaust backflow prevention structure of a composite microwave oven, which prevents high-temperature exhaust gas flowing through the inside and the electrical equipment from being re-introduced through the inlet of the lower side of the main body. It is about. The exhaust backflow prevention structure of the composite microwave oven according to the present invention is to exhaust the composite microwave oven, in which external air is introduced by the driving of the fan motor to cool the electrical equipment installed on the right side of the main body, and simultaneously flows inside the cavity to be discharged to the outside. In the backflow prevention structure, the exhaust is installed between the outer case of the lower left side of the main body and the cavity and is installed between the inner case of the cavity and the lower outer case and the cavity and passes through the inside of the cavity and the upper part of the main body to provide an inlet of the lower part of the main body. It is provided with a blocking film which prevents the reverse flow to the electrical equipment on the right side of the main body through the (Fig. 3 (b)).

Description

Exhaust backflow prevention structure of composite microwave oven

1 is a perspective view of a conventional microwave oven,

2a, b and c are sectional views taken on line A-A ', B-B', and C-C 'in FIG.

3A and 3B show side and front cross-sectional views of a composite microwave oven equipped with exhaust backflow prevention according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: magnetron 12: high pressure transformer

14: fan motor 16: high pressure capacitor

18: electric field 20: air guide

22: inside height 23: air duct

24: outer case 26: cavity

28: upper bracket 30: heater

32: Lower inlet 34: Control box

36: blocking film

The present invention relates to an exhaust backflow prevention structure of a composite microwave oven, and more particularly, to an exhaust backflow prevention structure of a composite microwave oven, which prevents high-temperature exhaust gas flowing through the inside and the electrical equipment from being re-introduced through the inlet of the lower side of the main body. It is about.

In general, as shown in FIG. 1, the microwave oven is equipped with an oven function and a grill function to enable various kinds of cooking to satisfy the needs of consumers. As shown in FIG. 2A, the flow of air of the composite microwave includes energy required for generating high frequency of the magnetron (MGT) 10 in which air flows by the fan motor 14 to generate high frequency. While air-cooling the high heat generated in the electrical equipment 18, such as a high voltage transformer (HVT) (12), and a high voltage capacitor (HVC) (16) for storing and releasing high pressure, As shown in FIG. 2C, some air ducts 23 are installed on the left side of the main body together with water vapor and smoke generated during cooking in the inside of the refrigerator 22 through the air guide 20. It is discharged to the space between the left outer case 24a and the cavity 26 through the other, the other part flows into the space between the upper outer case 24b and the cavity 26 to transfer the heat of the heater 30 to the outer case Upper bracket U to prevent delivery to 24b After cooling the pper bracket (28), it is discharged to the gap between the left outer case (24a) and the cavity (26), joined with the exhaust circulated in the interior 22, and the electrical equipment through the lower inlet (32) again (18) is flowed back to the right space in which the exhaust, including high temperature and water vapor, is re-introduced again, and eventually does not effectively cool the electric field 18, in particular, the intake of the display portion of the control box (34) There was a problem of accelerated corrosion of the equipment.

Accordingly, an object of the present invention is to prevent exhaust of exhaust gas discharged to the main body left side from the upper body and the inside of the main body to the right side of the main body where the electrical equipment is installed again through the lower inlet port, thereby preventing the electrical equipment from overheating and from moisture. It is to provide an exhaust backflow prevention structure of a composite microwave oven to protect equipment.

In the above-described object of the present invention, in the exhaust backflow prevention structure of the composite microwave oven, the outside air is introduced by the drive of the fan motor to cool the electrical equipment installed on the right side of the main body and at the same time flow inside the cavity to be discharged to the outside, It is provided between the outer case of the lower left side of the main body and the cavity is provided with a blocking film to prevent the exhaust through the inside of the cavity and the upper body to flow back to the electrical equipment on the right side of the main body through the inlet of the lower body By providing an exhaust backflow prevention structure of the composite microwave oven.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

Prior to describing the present embodiment, the same reference numerals are used to refer to the same elements as those of the prior art described with reference to FIGS. 1 and 2a, b, and c, and detailed description thereof will not be repeated. .

3A and 3B show side cross-sectional and front cross-sectional views of a composite microwave oven equipped with an exhaust backflow prevention function according to an embodiment of the present invention.

In the present embodiment, as shown in FIG. 3B, outside air is introduced by the driving of the fan motor 14 to cool the electrical equipment 18 installed on the right side of the main body, and simultaneously flows inside the cavity 22 to cook food. It is applied to a combined microwave oven where the outside air circulates to remove smoke and moisture from the air.

The exhaust backflow prevention structure of the composite microwave oven according to the present embodiment is installed between the outer case 24a and the cavity 26 on the lower left side of the main body, as shown in FIGS. And a blocking film 36 which prevents the exhaust gas having passed through the main body upper side from flowing back to the electric field 18 on the right side of the main body through the inlet port under the main body.

Hereinafter, the operation and effects of the present embodiment configured as described above will be described.

When the microwave oven is operated to cook food in the refrigerator 22, air flows by the fan motor 14, and smoke generated during cooking is introduced through the air guide 20, and the main body is caused by the air duct 923. The air flowing to the upper side of the main body of the air flowing by the fan motor 14 is discharged to the left side to cool the upper bracket 28 that absorbs the heat of the heater 30 and is discharged to the left side of the main body so as to be discharged to the left side of the main body. The air collected between the 24a) and the cavity 26 is discharged to the outside through the discharge port formed on the rear surface of the main body by the blocking film 36, and is re-introduced to the right side of the main body where the electrical equipment is installed again through the inlet formed on the lower side of the main body. To be prevented.

As described above, according to the exhaust backflow prevention structure of the composite microwave oven according to the present invention, a barrier is installed between the cavity on the left side of the main body and the outer case, and the exhaust discharged to the left side of the main body is installed again through the inlet of the lower side. By reflowing to the right side of the main body, the electrical equipment is prevented from being overheated and the equipment is protected from moisture, thereby improving the reliability of the equipment.

Claims (1)

In the exhaust backflow prevention structure of the composite microwave oven, when the air flowed in from outside by the fan motor is flowed in the cavity while being discharged to the outside while cooling the electrical equipment, the blocking film can be prevented from flowing back to the electrical equipment. The exhaust backflow prevention structure of the composite microwave oven characterized in that it is installed between the outer case of the lower left of the main body and the cavity.