KR200485953Y1

KR200485953Y1 - A structure for preventing electronic wave protected oven

Info

Publication number: KR200485953Y1
Application number: KR2020160005802U
Authority: KR
Inventors: 김경연
Original assignee: 에스케이매직 주식회사
Priority date: 2016-10-07
Filing date: 2016-10-07
Publication date: 2018-03-16

Abstract

The present invention relates to an electromagnetic wave leakage preventing oven structure, which comprises a body oven panel (12) having a curved corner; A waveguide 15 and a magnetron 16 for providing electromagnetic waves to the body oven panel 12; A top oven panel (11) coupled to an upper end of the body oven panel (12) with an end curved; A front oven panel (14) coupled to the front of the body oven panel (12); Wherein at least one of a corner curved surface of the body oven panel (12) or an end curved surface of the top oven panel (11) is provided with a plurality of first concave- (19-1) and the second concavo-convex flange portion (19-2), there is a strong point that it is possible to suppress the electromagnetic wave leakage in the curved portion which is the weak point of electromagnetic wave leakage in the oven.

Description

[0001] The present invention relates to an oven for preventing electromagnetic leakage,

The present invention relates to an electromagnetic wave leakage preventing oven structure.

Generally, a microwave oven is composed of a cavity and a waveguide, which are designed to seal electromagnetic waves, and a sealed structure to prevent electromagnetic waves from leaking outside the cavity and the waveguide.

To do this, the cavity forms a rectangular chamber with four components: a top oven, a body oven, a back oven, and a front oven, and each component is firmly constrained in surface contact with the welding process and the pressing process.

More specifically, the two surfaces of the top oven and the body oven are projected and welded at regular intervals, and then the four surfaces are welded in the same manner as the back oven.

At this time, the distance between the projection welds is maintained by maintaining the minimum distance that electromagnetic waves can not leak. Thereafter, the front oven is squeezed to complete the cavity.

The waveguide, which is a path through which the electromagnetic wave travels from the magnetron, is welded to one surface of the cavity by the same welding method as the cavity individual components.

The cavities fabricated by the pressing and welding processes are designed to be completely theoretically shielded against electromagnetic leakage, but in actual cavities, there is a vulnerability to electromagnetic wave leakage.

In the case of the body oven and the top oven, a "b" shaped bending shape is formed. In order to form such a bending shape on a mold, a flange is not damaged and a natural curve is formed only by leaving at least a flange portion.

If the bending process is performed after leaving the minimum flange, the flange can not be maintained exactly 90 degrees in the bending process, and the angle is deformed, and a gap is formed in the curved portion during welding or pressing.

Such a curved portion can not be welded by a separate post work because the flange length is not long.

In such a conventional microwave oven cavity structure, when the electromagnetic wave leaks, there arises a problem that the microwave cooking efficiency is lowered, and a printed circuit board controlling the driving of the microwave oven according to exposure of the electromagnetic wave is malfunctioned or stopped.

Especially, when electromagnetic waves are exposed to users, it is more problematic that they can have harmful effects on the human body.

It is important that the above-mentioned conventional electronic oven suppresses the electromagnetic wave leakage in the curved portion where the gap occurs, but it has not fundamentally overcome it in the past.

Korea Patent No. 574,857 Korea Patent No. 574,861

The present invention has been made in order to overcome the problems of the prior art as described above, and it is an object of the present invention to provide an electromagnetic wave leakage preventing oven structure in which electromagnetic wave leakage is minimized by improving the shape and structure of electromagnetic wave leakage portions of the components constituting the cavity The purpose is to do.

In order to solve the above-described problems, the present invention provides a body oven panel comprising: a body oven panel having a curved corner; A waveguide 15 and a magnetron 16 for providing electromagnetic waves to the body oven panel 12; A top oven panel (11) coupled to an upper end of the body oven panel (12) with an end curved; A front oven panel (14) coupled to the front of the body oven panel (12); Wherein at least one of a corner curved surface of the body oven panel (12) or an end curved surface of the top oven panel (11) is provided with a plurality of first concave- (19-1) and a second concavo-convex flange portion (19-2).

At least one of the top oven panel 11 and the body oven panel 12 has a first bent portion 11-9 fixed to the projection of the front oven panel 14 and a second bent portion 12 -9) may be formed.

The present invention as described above has the following effects.

First, there is a strong point that it is possible to suppress the leakage of electromagnetic waves in the curved portion of the oven which is susceptible to electromagnetic wave leakage.

Secondly, leakage of electromagnetic waves from the microwave cavity structure is prevented, thereby improving microwave cooking efficiency.

Thirdly, as the exposure of electromagnetic waves is suppressed, the problem of noises or the like on the printed circuit board controlling the driving of the microwave oven is eliminated and the problem of malfunctioning or stopping the printed circuit board is solved.

Fourth, there is a strong point that the harmful electromagnetic waves are cut off, and the cooking environment is greatly improved.

1 is a partial perspective view of a main body according to a preferred embodiment of the present invention;
2 is a partially exploded perspective view of a main body according to a preferred embodiment of the present invention;
3 is a partial rear perspective view of a body according to a preferred embodiment of the present invention;
4 is a partial perspective view of a cavity 110 according to a preferred embodiment of the present invention.
5 is a partially cutaway perspective view of a body according to a preferred embodiment of the present invention;
6 is a partially enlarged perspective view of a main body according to a preferred embodiment of the present invention;
7 is a partial perspective view of a bending section (curve section) of the main body according to a preferred embodiment of the present invention.
FIG. 8 is a partial view showing a combination of the front oven panel 14, the top oven panel 11, and the body oven panel 12 according to the preferred embodiment of the present invention.

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

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of functions in the present invention, and this may vary depending on the intentions or customs of the user, the operator, and the like. Therefore, the definitions of these terms should be described based on the contents throughout this specification.

First, the overall structure of the present invention will be described, and a detailed description will be given later.

The body oven panel 12 has a curved edge.

The waveguide 15 and the magnetron 16, which provide electromagnetic waves, provide electromagnetic waves to the body oven panel 12.

The top oven panel (11) is joined to the top of the body oven panel (12) with its end curved.

The front oven panel 14 is joined to the front of the body oven panel 12.

The plurality of first concave-convex flange portions 19-1 and the second concave-convex flange portion 19-2 are formed in at least one of a corner curved surface of the body oven panel 12 or an end curved surface of the top oven panel 11, Or at predetermined intervals along the end curved surface.

The first concave-convex flange portion 19-1 is formed on the curved surface of the body oven panel 12 or on the curved surface of the end portion of the top-

The second concavo-convex flange portion 19-2 is provided on the curved surface of the end portion of the top oven panel 11. [

On the other hand, the first bending portion 11-9 and the second bending portion 12-9 are provided for ease of assembly.

The first bending section 11-9 and the second bending section 12-9 are provided on at least one of the top oven panel 11 and the body oven panel 12 and fixed to the protrusions of the front oven panel 14 .

The first bent portion 11-9 may be formed in a long shape along the upper edge of the top oven panel 11 and may be formed as an entirely bent "

The second bent portion 12-9 may be formed to be long along the edge of the body oven panel 12, and may also be formed as an entirely curved "? &Quot;

The detailed configuration will be described below with reference to the drawings.

1 is a partial perspective view of a main body according to a preferred embodiment of the present invention;

On the rear surface of the main body, a magnetron 16 for generating electromagnetic waves is provided.

The waveguide 15 is connected to the magnetron 16 and guides the electromagnetic wave generated from the magnetron 16 to the inside of the main body.

A front door 111 is provided on the front surface of the main body so as to be openable and closable.

2 is a partially exploded perspective view of a main body according to a preferred embodiment of the present invention;

Electromagnetic waves applied from a magnetron 16, which is an electromagnetic wave generating unit, are provided inside the cavity 110.

The cavity 110 is described as a space in which food is supplied and cooked inside the main body.

A front door 111 is provided on the front surface of the cavity 110 and an upper heater 130 is provided on the upper surface of the cavity 110.

A ceramic plate 121 is provided under the cavity 110.

The upper part of the ceramic plate 121 is a cavity 110 in which food is cooked and a space below the ceramic plate 121 is provided with a convection generating space 120 in which natural convection is generated.

3 is a partial rear perspective view of a body according to a preferred embodiment of the present invention;

The structure of the main body includes a body oven panel 12 and a front oven panel 14, a top oven panel 11, and a rear oven panel 13,

In other words, the body oven panel 12, the front oven panel 14, the top oven panel 11, and the rear oven panel 13 form the cavity 110.

On the other hand, a waveguide 15 extending from the lower end of the body oven panel 12 is provided, and the waveguide 15 extends to the rear of the rear oven panel 13.

4 is a partial perspective view of a cavity 110 according to a preferred embodiment of the present invention.

An opening 17 is formed in the lower end of the body oven panel 12 to communicate with the space of the cavity 110.

The opening 17 is an outlet for guiding the electromagnetic wave generated from the magnetron 16 into the cavity 110.

5 is a partially cutaway perspective view of a body according to a preferred embodiment of the present invention;

Electromagnetic waves generated in the magnetron 16 are guided along the waveguide 15 to the waveguide end portion 15-1 and eventually radiated into the interior of the body oven panel 12 through the opening 17. [

More specifically, the electromagnetic wave guided to the end portion 15-1 of the waveguide through the opening 17 formed in the lower end of the body oven panel 12 is radiated into the body oven panel 12. [

6 is a partially enlarged perspective view of a main body according to a preferred embodiment of the present invention;

7 is a partial perspective view of a bending section (curve section) of the main body according to a preferred embodiment of the present invention.

FIG. 8 is a partial view showing a combination of the front oven panel 14, the top oven panel 11, and the body oven panel 12 according to the preferred embodiment of the present invention.

The first weakened portion 310 indicates a portion where a leakage of electromagnetic waves may be a concern as a curved point where the top oven panel 11 and the front oven panel 14 meet.

The second weakened portion 320 indicates a portion where the leakage of the electromagnetic wave may be a concern as a curved point where the top oven panel 11 and the rear oven panel 13 meet.

The first concave-convex flange portion 19-1 is formed of a plurality of flanges at the curved portion of the body-oven panel 12, which may leak electromagnetic waves.

Specifically, a plurality of first concave-convex flange portions 19-1 are provided in a curved banding section of the top oven panel 11. [

On the other hand, the first end portion of the top oven panel 11 is provided with the first bent portion 11-9 and is easily and stably fixed to the edge projection of the front oven panel 14.

Concretely, at the end of the top oven panel 11, a first bent portion 11-9 having a "a" -shaped choke structure having tension to come in close contact with the front oven panel 14 is provided.

On the other hand, at the end of the body oven panel 12, a second bent portion 12-9 having a choke structure of "a" shape having tension to come in close contact with the front oven panel 14 may be provided.

The length of the incision groove of the first irregularity flange portion 19-1 and the second irregularity flange portion 19-2 can be obtained by using the following equation to cut off the electromagnetic wave of 2.45 GHz used in the microwave oven .

(1) Electromagnetic wave attenuation factor

R = -32 X (t / a) [dB]

In Equation (1), a is the length of the longest side of the incision groove shape, and t is the thickness of the component forming the incision groove.

Referring to Equation 1, in order to manage the electromagnetic wave leakage amount to 0.01 mm / cm 2 or less when the leakage propagation amount of 700 W microwave range is 10 W / cm 2, the electromagnetic wave attenuation ratio R should be -3 and the case where the thickness t of the component is 0.6 mm , a = -32 X 0.6 / -3 = 6.4 mm and the length of the longest side of the incision groove shape should be determined.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be understood that the present invention can be changed.

11: Top oven panel
11-9: First bend section
12: Body Oven Panel
12-9:
13: Rear oven panel
14: Front oven panel
15: Waveguide
15-1: End of waveguide
16: Magnetron
17: opening
19-1: First irregularity flange portion
19-2: second unevenness flange portion
110: cavity
111: Front door
120: Convection heat generating chamber
121: Ceramic plate
130: upper heater
310: First vulnerability
320: second vulnerability

Claims

A body oven panel (12) having a curved corner;
A waveguide 15 and a magnetron 16 for providing electromagnetic waves to the body oven panel 12;
A top oven panel (11) coupled to an upper end of the body oven panel (12) with an end curved;
A front oven panel (14) coupled to the front of the body oven panel (12); &Lt; / RTI >
At least one of a corner curved surface of the body oven panel 12 or an end curved surface of the top oven panel 11 has a plurality of first concave and convex flange portions 19-1 And a second concavo-convex flange portion 19-2 are formed,
The first concave-convex flange portion (19-1) and the second concave-convex flange portion (19-2) are formed with cutting grooves,
In the formula (1), R is the electromagnetic wave attenuation factor, t is the thickness of the first concave-convex flange portion (19-1) or the second concave-convex flange portion (19-2) a is a length of the longest side of the formed incision groove,
The above a is derived by the above equation (1)
[Equation 1]

At least one of the top oven panel 11 and the body oven panel 12 is provided with a first bending portion 11-9 and a first bending portion 11-9 fixed to the projection of the front oven panel 14, Shaped second bending portion 12-9 is formed,
When the top oven panel 11 and the body oven panel 12 are welded or compressed, the end curved surface of the top oven panel 11 and the curved surface of the body oven panel 12 are separated by the space formed by the cut- The shape of the curved surface of the corner curved surface of the curved surface is maintained,
When the top oven panel 11 and the front oven panel 14 are combined, the top oven panel 11 and the front oven panel 14 are closely contacted by the first bent portion 11-9,
The body oven panel 12 and the front oven panel 14 are closely contacted by the second bent portion 12-9 when the body oven panel 12 and the front oven panel 14 are coupled.
Electromagnetic leakage prevention oven.

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