KR100369826B1 - Microwave oven - Google Patents

Abstract

The present invention provides a main body casing for forming a cooking chamber and a component chamber, a blowing fan provided in the component chamber, a blowing fan cover surrounding the blowing fan, and external power to the blowing fan and the device parts. The present invention relates to a microwave oven having a power supply line, wherein the power supply line is introduced into the parts chamber through the main body casing and extends along an inner wall surface of the blower fan cover. As a result, a microwave oven is provided which effectively prevents a temperature rise of the power supply line and prevents a failure of the device in advance.

Description

Microwave oven {MICROWAVE OVEN}

The present invention provides a main body casing for forming a cooking chamber and a component chamber, a blowing fan provided in the component chamber, a blowing fan cover surrounding the blowing fan, and external power to the blowing fan and the device parts. It relates to a microwave oven having a power supply line.

4 is an exploded perspective view of a conventional microwave oven. As shown in this figure, a conventional microwave oven is formed with a main body casing 101 in which a cooking chamber 111 and a component chamber 110 are formed, and an inverted "U" character arranged to surround the main body casing 101. It has an outer casing 103 in shape.

The main body casing 101 is composed of a front plate 113, a rear plate 115, and a lower plate 117 which are respectively coupled to the front, rear, and bottom of the outer casing 103, and the front plate 113 and the back plate. Between the 115 is a rectangular cavity casing 119 with an inner space formed by the cooking chamber 111 is interposed.

In front of the main body casing 101, a door 105 for rotating and opening the front opening of the cooking chamber 111 and an operation panel 107 for operating a microwave oven are provided, and the main body casing in the rear region of the operation panel 107 is provided. The component chamber 110 is formed in 101. In the parts chamber 110, a magnetron 121 for outputting microwaves and supplying them to the cooking chamber 111, a high voltage transformer 123 and a high voltage capacitor 125 for applying a high voltage to the magnetron 121, and a parts chamber. A blowing fan 130 or the like for cooling the component parts in the 110 is provided.

Meanwhile, a rectangular cutout groove (not shown) cut out from an upper edge is formed in an upper region of the main body casing 101 rear plate 115 on the component chamber 110 side, and the cutout groove (not shown) One section of the power supply line 120 drawn into the component chamber 110 from the outside is fixed to apply power to the device components in the component chamber 110. The power supply line 120 introduced into the component chamber 110 is connected to the device parts to apply power to each device part.

By the way, in such a conventional microwave oven, since the power supply line 120 for supplying power to the device components is simply drawn from the outside into the component chamber 110 and connected to the component parts, the component chamber 110 is used. The power supply line 120 exposed to the inside is affected by the temperature rise inside the component chamber 110 due to the heat generation of the device components during the operation of the microwave oven. Accordingly, the power supply line 120 has a problem that exceeds the prescribed temperature, there is a problem that there is a high risk of providing a cause of failure of the device.

Accordingly, an object of the present invention is to provide a microwave oven which can effectively prevent the temperature rise of the power supply line and prevent the failure of the device in advance.

1 is an exploded perspective view of a microwave oven according to the present invention;

2 is an enlarged perspective view of a portion “A” of FIG. 1;

3 is a partial cross-sectional view of FIG.

Figure 4 is an exploded perspective view of a conventional microwave oven.

* Explanation of symbols for the main parts of the drawings

1: main body casing 10: parts chamber

15: rear panel 20: power supply line

30: blower fan 31: blower fan cover

33: inlet 35: outlet

37: wire holder 41: hook portion

According to the present invention, a main body casing for forming a cooking chamber and a component chamber, a blowing fan installed in the component chamber, a blowing fan cover surrounding the blowing fan, and a power source from the outside are supplied to the blowing fan and the A microwave oven having a power supply line applied to a device component, wherein the power supply line is introduced into the component chamber through the main body casing and extends along an inner wall surface of the blower fan cover. .

Here, the blower fan cover is preferably formed in the inlet and outlet for the passage of the power supply line spaced apart from each other, the inlet and outlet are formed in the lower region and the upper region of the blower fan cover, respectively. effective.

In addition, the inner wall surface of the blower fan cover in the region between the inlet and the outlet port is more preferably formed with a wire holder for fixing the power supply line, the wire holder so as to face each other from the inner wall surface of the blower fan cover. It is more effective to have an extended pair of bites, and the free ends of the bites are each bent inward to prevent the power supply line from being separated.

Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.

1 is an exploded perspective view of a microwave oven according to the present invention, FIG. 2 is an enlarged perspective view of a portion “A” of FIG. 1, and FIG. 3 is a partial cross-sectional view of FIG. 2. As shown in these figures, the microwave oven according to the present invention includes a main body casing 1 in which a cooking chamber 11 and a component chamber 10 are formed, and an inverse "U arranged to surround the main body casing 1. It has a "shaped outer casing 3.

The main body casing (1) consists of a front plate (13), a rear plate (15) and a lower plate (17) coupled to the front, rear, and bottom surfaces of the outer casing (3), respectively. Between the spaces 15, a rectangular cylindrical casing 19 in which an inner space is formed by the cooking chamber 11 is interposed.

In front of the main body casing 1, a door 5 for rotating and opening the front opening of the cooking chamber 11 and an operation panel 7 for operating a microwave oven are provided, and the main body casing in the rear region of the operation panel 7 is provided. The component chamber 10 is formed in (1). The component chamber 10 is provided with a magnetron 21 for outputting microwaves and supplying it to the cooking chamber 11, a high voltage transformer 23 and a high voltage capacitor 25 for applying a high voltage to the magnetron 21. The rear surface of the component chamber 10, that is, the rear plate 15 of the component chamber 10 side of the main body casing 1 sucks outside air through an air inlet hole (not shown) and blows it into the component chamber 10. A blowing fan 30 for cooling the device parts is provided.

In addition, a rectangular cutout groove (not shown) cut from one side edge is formed at one side of the main body casing (1) rear plate 15 adjacent to the blowing fan 30, and the cutout groove (not shown) One section of the power supply line 20 drawn from the outside into the component chamber 10 is fixed to apply power to the device components in the component chamber 10.

On the other hand, the blowing fan 30 provided in the component chamber 10 is surrounded by the blowing fan cover 31. An inlet 33 is formed in the lower region of the side wall of the blower fan cover 31 adjacent to the fixed portion of the power supply line 20 so that the power supply line 20 can be introduced into the blower fan cover 31. The outlet 35 is formed in the upper region of the fan cover 31 so that the power supply line 20 drawn into the inlet 33 can be drawn out. In addition, a wire holder 37 is formed on the inner wall surface of the blower fan cover 31 between the inlet 33 and the outlet 35 so that the power supply line 20 passing through the inside of the blower fan cover 31 is engaged. have. The wire holder 37 has a pair of bites 41 extending from the inner wall surface of the blower fan cover 31 to be integrally opposed to each other, and the free end of the bites 41 of the power supply line 20 It is bent to prevent breakaway.

With this configuration, the power supply line 20 drawn into the component chamber 10 from an external power supply source passes through the inside of the blower fan cover 31 and is then connected to the device component. As a result, even if the operation of the microwave is started and the temperature inside the component chamber 10 rises, the power supply line 20 prevents the temperature rise by the blowing air of the blower fan 30.

In this way, by allowing the power supply line drawn into the component chamber to pass through the inside of the blower fan cover, it is possible to effectively prevent the temperature rise of the power supply line, and to prevent the failure of the device.

As described above, according to the present invention, there is provided a microwave oven which can effectively prevent the temperature rise of the power supply line, and can prevent the failure of the device in advance.

Claims (5)

A main body casing for forming a cooking chamber and a component chamber, a blowing fan installed in the component chamber, a blowing fan cover surrounding the blowing fan, and a power supply line for applying power from the outside to the blowing fan and the appliance parts. In the microwave, And the power supply line is introduced into the component chamber through the main body casing and extends along an inner wall surface of the blower fan cover. The method of claim 1, The blower fan cover is characterized in that the inlet and outlet for the passage of the power supply line are formed to be spaced apart from each other by a predetermined distance. The method of claim 2, The inlet and outlet are microwave ovens, characterized in that formed in the lower region and the upper region of the blower fan cover, respectively. The method of claim 3, wherein And an electric wire holder for fixing the power supply line on an inner wall surface of the blower fan cover in the region between the inlet and the outlet. The method of claim 4, wherein The wire holder has a pair of bites extending to face each other from the inner wall surface of the blower fan cover, the free end of the bite is characterized in that each bent inward to prevent the separation of the power supply line Range.