KR20140014430A - Door for microwave oven - Google Patents

Door for microwave oven Download PDF

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Publication number
KR20140014430A
KR20140014430A KR1020120080362A KR20120080362A KR20140014430A KR 20140014430 A KR20140014430 A KR 20140014430A KR 1020120080362 A KR1020120080362 A KR 1020120080362A KR 20120080362 A KR20120080362 A KR 20120080362A KR 20140014430 A KR20140014430 A KR 20140014430A
Authority
KR
South Korea
Prior art keywords
door
microwave oven
cooking chamber
inner window
window
Prior art date
Application number
KR1020120080362A
Other languages
Korean (ko)
Inventor
김한주
Original Assignee
동부대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 동부대우전자 주식회사 filed Critical 동부대우전자 주식회사
Priority to KR1020120080362A priority Critical patent/KR20140014430A/en
Publication of KR20140014430A publication Critical patent/KR20140014430A/en

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H05B6/763—Microwave radiation seals for doors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H05B6/766—Microwave radiation screens for windows

Abstract

The present invention relates to a door for a microwave oven including a door frame which is connected to the cavity of a microwave oven having an internal cooking chamber and which is formed along the edge of the opening of the cooking chamber; an internal window which is installed on the inner side of the door frame in touch with the cooking chamber; an electromagnetic waves barrier which is formed on the flat surface of the internal window to prevent electromagnetic waves from leaking from the inside of the cooking chamber through the flat surface of the internal window; a mesh gasket of a mesh shape which is installed on the door frame and joined to the circumference of the internal window to prevent electromagnetic waves from leaking from the inside of the cooking chamber through the circumference of the internal window; and an external window which is installed on the outer side of the door frame.

Description

Door of microwave oven {DOOR FOR MICROWAVE OVEN}

The present invention relates to a door of a microwave oven, and more particularly, to a door of a microwave oven capable of preventing the leakage of electromagnetic waves generated inside the cooking chamber of the microwave oven.

A microwave oven is a device that heats and cooks food using an electromagnetic field of high frequency, and generally has a configuration including a cavity in which a cooking chamber is formed therein and a door for opening and closing the cooking chamber.

1 is an exploded perspective view showing main parts of an example of a door of a microwave oven according to the related art.

Referring to FIG. 1, the door 130 of the microwave oven is coupled to the door frame 131, the door window 137 coupled to the door frame 131, and the inside of the door frame 131 to block the leakage of electromagnetic waves. Electromagnetic wave blocking member 138 is included.

An opening is formed in the center of the door frame 131, and the door window 137 is made of a transparent material so that the user can visually check the state of food in the cooking chamber and is coupled to the opening of the door frame 131.

The electromagnetic wave blocking member 138 includes a shield plate 138b having a plurality of through holes having a fine diameter of 3 mm or less, and a choke 138a formed around the shield plate 138b.

Electromagnetic waves in the cooking chamber do not pass through the through-holes formed in the shielding plate 138b, but are absorbed by the metal shielding plate 138b and the progress is blocked, thereby preventing leakage to the outside of the microwave oven.

The choke 138b has a concave-convex shape and is formed around the shielding plate 138b to block electromagnetic waves flowing out through the edge of the door 130.

Related prior art is Republic of Korea Patent Publication No. 0366021 (2002.12.11. Registered, the name of the invention: microwave oven door assembly).

The shielding plate provided over the entire surface of the microwave oven door to block electromagnetic waves, which is made of a metal material, causes the self weight of the microwave oven to increase and the unit cost to be increased.

In addition, the shielding plate has a curved shape in a direction perpendicular to the plate surface of the shielding plate to reinforce the degradation of rigidity by forming the through hole, and the choke coupled around the shielding plate also has a slim thickness to realize the uneven structure. There is a limit to the formation.

As a result, it is difficult to form a door having a slim thickness of 20 mm or less, and the structure of the electromagnetic wave blocking member having the shielding plate and the choke serves as a limiting factor for the advanced microwave design.

In addition, when the interval of the through-holes formed in the shielding plate is extended, the rigidity of the shielding plate may be reinforced, but it is difficult for a user to easily check the inside of the cooking chamber through the through-holes outside of the microwave oven, thereby reducing the convenience of use.

It is an object of the present invention to provide a microwave oven door that can stably block electromagnetic wave leakage of a microwave oven and can realize a lighter microwave oven and a slimmer design.

The door of the microwave oven according to an aspect of the present invention, the door frame is connected to the cavity of the microwave oven, the cooking chamber is formed therein, formed along the edge of the opening of the cooking chamber; An inner window installed inside the door frame in contact with the cooking chamber; An electromagnetic wave shielding film formed on the plate surface of the inner window to prevent electromagnetic waves inside the cooking chamber from leaking through the plate surface of the inner window; A mesh gasket installed on the door frame having a mesh shape and coupled to the inner window circumference to prevent electromagnetic waves inside the cooking chamber from leaking through the circumference of the inner window; And an outer window installed at an outer portion of the door frame.

In the present invention, the mesh gasket is formed by rolling a metal net into a bar shape and then bending it into a shape corresponding to the circumference of the inner window.

In the present invention, the inner window and the mesh gasket, characterized in that formed in an expanded width than the opening of the cooking chamber.

In the present invention, the electromagnetic wave shielding film is formed by coating a coating liquid containing a metal component in a mesh shape on the inner window or the transparent film attached to the inner window.

The present invention may further include a double blocking film formed on one surface of the outer window to have a mesh shape different from that of the electromagnetic wave blocking film so as to block the electromagnetic wave passing through the inner window through the outer window.

The present invention covers the plate surface and the circumference of the inner window in contact with the cooking chamber of the microwave oven with an electromagnetic shielding film and a mesh gasket having an electromagnetic wave shielding function, respectively, to stably block the outflow of the microwave.

In addition, the present invention forms a double-blocking film for blocking electromagnetic waves of a different wavelength from the electromagnetic wave blocking film in the outer window of the door, it is possible to reliably block the outflow of microwaves in the microwave.

In addition, the present invention can form an electromagnetic wave shielding film by coating a coating liquid having a metal component in the form of a thin film on the inner surface of the inner window, the existing electromagnetic wave blocking function using a choke having a shielding plate and an uneven structure having a bent portion Compared to the above, the microwave design can be made slimmer.

In addition, the present invention can form an electromagnetic wave shielding film by coating a coating liquid having a metal component in the form of a thin film on the inner surface of the inner window. Light weight and cost reduction can be realized.

1 is an exploded perspective view showing main parts of an example of a door of a microwave oven according to the related art.
Figure 2 is a perspective view schematically showing the appearance of the microwave oven is installed the door of the microwave oven according to an embodiment of the present invention.
3 is a side cross-sectional view of the door of the microwave oven according to the embodiment of the present invention on the line AA of FIG.
4 is a front sectional view showing the door of the microwave oven according to the embodiment of the present invention on the line BB of FIG.
5 is a conceptual diagram illustrating a process of manufacturing and installing a mesh gasket of a door of a microwave oven according to an embodiment of the present invention.

Hereinafter, an embodiment of a door of a microwave oven according to the present invention 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 the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Figure 2 is a perspective view schematically showing the appearance of the microwave oven is installed in the door of the microwave oven according to an embodiment of the present invention, Figure 3 is a door of the microwave oven according to an embodiment of the present invention on the line AA of Figure 2 Side cross-sectional view showing.

Figure 4 is a front sectional view showing a door of the microwave oven according to an embodiment of the present invention on the line BB of Figure 3, Figure 5 is manufactured and installed a mesh gasket of the door of the microwave oven according to an embodiment of the present invention A conceptual diagram showing the process of doing so.

Referring to FIGS. 2 and 3, the door 130 of the microwave oven 100 according to the present invention has an opening 121 of the cooking chamber 120 at a front surface of the cavity 110 in which the cooking chamber 120 is formed. ) Is installed to shield.

3 and 4, the door 130 of the microwave oven 100 according to the embodiment of the present invention includes a door frame 131, an inner window 132, an electromagnetic shielding film 133, a mesh gasket 134, The outer window 135 and the double barrier layer 136 are included.

The door frame 131 is a portion forming the exterior and framing of the door 130 of the microwave oven 100 according to the exemplary embodiment of the present invention, and has a rectangular frame shape along the edge of the opening 121 of the cooking chamber 120. Is formed.

The edge portion of the door frame 131 forms a continuous appearance with the cavity 110, and the center portion of the door frame 131 penetrates back and forth (left and right in FIG. 3) so that the user can visually check the inside of the cooking chamber 120. Is formed.

The door frame 131 has a U-shaped cross-section as shown in FIG. 3 and is continuously formed along the edge of the opening of the cooking chamber 120.

That is, the door frame 131 forms the rear part of the door 130 and the inner part (the right part in FIG. 3) contacting the cooking chamber 120 and the outer part (the left part in FIG. 3) forming the front part of the door 130 are doors. It has a shape projecting inward toward the center portion of the frame 131.

The inner window 132 is installed between the inner side and the outer side of the door frame 131, and is fixedly installed on the inner side of the door frame 131 in contact with the cooking chamber 120.

The inner window 132 is made of a transparent plate such as glass so that the user can visually check the inside of the cooking chamber 120, and is installed to stand vertically across the through hole formed in the center of the door frame 131.

The electromagnetic wave blocking film 133 blocks the electromagnetic waves inside the cooking chamber 120 from leaking to the outside through the plate surface (eg, the front surface) of the inner window 132, as shown in FIG. 4. Is formed on the entire plate surface.

The electromagnetic wave blocking layer 133 may be formed by coating and drying a coating liquid including a metal component, that is, a conductor, on a plate surface of the inner window 132 in a mesh shape (lattice shape).

In addition, the electromagnetic wave shielding film 133 is coated with a coating liquid containing a metal component in a mesh shape and dried on a flexible film that can be flexibly flexible, and then attaches the transparent film to the plate surface of the inner window 132. It may be formed.

The inner window 132 of the electromagnetic shielding film 133 having a plurality of holes having a size of 3 mm or less by forming a metal thin wire made of a coating liquid containing a metal component in a lattice shape with a spacing of 3 mm or less as described above. It can form in the whole plate | board surface of the.

Electromagnetic waves in the cooking chamber do not pass through the holes formed in the electromagnetic wave shielding film 133 and are absorbed by the electromagnetic wave shielding film 133, and their progression is blocked, thereby preventing leakage to the outside of the microwave oven through the plate surface of the inner window 132.

The mesh gasket 134 has a mesh shape as shown in FIGS. 3, 4, and 5 (d) to prevent electromagnetic waves inside the cooking chamber 120 from leaking through the circumference of the inner window 132. It is installed in the frame 131.

The mesh gasket 134 is rolled to a metal mesh as shown in (a) of FIG. 5 in a bar shape as shown in (b) of FIG. 5, and then to (c) of FIG. 5. As shown in the drawing, it may be bent to have a shape corresponding to the circumference of the inner window 132.

Here, the metal mesh has a structure in which the metal wires are arranged in a lattice shape at intervals of 3 mm or less.

The mesh gasket 134 may be easily manufactured in a rectangular frame shape corresponding to the periphery of the inner window 132 by the manufacturing process as described above, as shown in (d) of FIG. 5 of the door frame 131 It is coupled around the through hole.

When the mesh gasket 134 is formed by bending the metal mesh as described above, a mesh structure for blocking electromagnetic waves is formed as compared with the case in which a plurality of fine through holes are densely formed on the metal sheet to manufacture the mesh gasket 134. While the mesh gasket 134 can be reliably implemented, the strength can be variously adjusted and implemented according to the degree of rolling the metal net.

As the inner window 132 is fitted between the mesh gaskets 134 and assembled, the circumference of the inner window 132 is in close contact with the mesh gasket 134.

Electromagnetic waves in the cooking chamber do not pass through the holes formed in the mesh gasket 134, but are absorbed by the mesh gasket 134 to prevent the leakage of the microwaves through the circumference of the inner window 132.

In an embodiment of the present invention, the inner window 132 and the mesh gasket 134 are formed to have an extended width than the opening 121 of the cooking chamber 120.

Accordingly, all of the electromagnetic waves propagated toward the door 130 through the opening 121 of the cooking chamber 120 flows into the inner window 132.

The electromagnetic waves introduced into the inner window 132 are absorbed through the electromagnetic shielding film 133 or the mesh gasket 134 coupled to the plate surface and the circumference of the inner window 132, respectively, and thus, the outside of the microwave oven 100 is blocked.

As described above, the inner window 132 is formed to have an extended width than the opening portion 121 of the cooking chamber 120, compared to a case in which the inner window 132 is smaller than the opening portion 121 of the cooking chamber 120. Is reflected on the surface of the door frame 131, or can be prevented from leaking to the outside through the gap between the door frame 131 and the cavity (110).

The outer window 135 is installed between the inner side and the outer side of the door frame 131, and is fixedly installed on the outer side forming the front part of the door 130 among the door frames 131.

The outer window 135, like the inner window 132, is made of a transparent plate such as glass so that the user can visually check the inside of the cooking chamber 120, the transverse hole formed in the center of the door frame 131 transversely It is installed upright.

The outer side of the door frame 131 (the left side in FIG. 3) and the outer window 135 are portions that form an outer appearance of the front side of the microwave oven 100.

The through hole formed in the outer side of the door frame 131 is formed to have the same width as that of the opening 121 of the cooking chamber 120 or smaller than the opening 121 of the cooking chamber 120.

Accordingly, the outer portion of the door frame 131 covers the portion forming the edge of the cooking chamber 120 opening 121 in the cavity 110 and the mesh gasket 134 coupled around the inner window 132 from the front. Thus, the microwave oven 100 has a neat appearance.

The double blocking layer 136 is formed on the plate surface of the outer window 135 to have a mesh shape different from that of the electromagnetic wave blocking film 133 so as to block the electromagnetic wave passing through the inner window 132 from leaking through the outer window 135.

Like the electromagnetic wave shielding film 133, the double blocking film 136 may be formed by coating and drying a coating liquid including a metal component, that is, a conductor, on a plate surface of the inner window 132 in a mesh shape (lattice shape).

In addition, the double blocking film 136, after coating the coating liquid containing a metal component in a mesh shape on a flexible film that can be flexibly flexible, dried, and then attach the transparent film to the plate surface of the inner window 132 It may be formed.

The double blocking layer 136 is formed by forming a metal thin wire in a lattice shape with a spacing of 3 mm or less as described above, but is formed with a different distance from the electromagnetic wave blocking film 133.

Electromagnetic waves passing through the holes of the electromagnetic shielding film 133 or the mesh gasket 134 do not pass through the holes formed in the double blocking film 136, but are absorbed by the double blocking film 136 to block the progress of the electrons. Leakage outside the range is prevented.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

100: microwave oven 110: cavity
120: cooking chamber 121: opening
130: door 131: door frame
132: inner window 133: electromagnetic shielding
134: mesh gasket 135: outer window
136: double barrier membrane

Claims (5)

A door frame connected to a cavity of a microwave oven having a cooking chamber formed therein and formed along an edge of an opening of the cooking chamber;
An inner window installed inside the door frame in contact with the cooking chamber;
An electromagnetic wave shielding film formed on the plate surface of the inner window to prevent electromagnetic waves inside the cooking chamber from leaking through the plate surface of the inner window;
A mesh gasket installed on the door frame having a mesh shape and coupled to the inner window circumference to prevent electromagnetic waves inside the cooking chamber from leaking through the circumference of the inner window; And
An outer window installed at an outer portion of the door frame;
Door of a microwave oven comprising a.
The method of claim 1,
The mesh gasket,
Rolling the metal mesh in the shape of a bar, the door of the microwave oven, characterized in that formed by bending in a shape corresponding to the circumference of the inner window.
3. The method according to claim 1 or 2,
The inner window and the mesh gasket,
The door of the microwave oven, characterized in that the width formed than the opening of the cooking chamber extended.
The method of claim 1,
The electromagnetic wave blocking film,
The door of the microwave oven, characterized in that the coating liquid containing a metal component is formed by coating the inner window or a transparent film attached to the inner window in a mesh shape.
5. The method of claim 4,
A double blocking film formed on one surface of the outer window to have a mesh shape different from that of the electromagnetic wave blocking film so as to block the electromagnetic wave passing through the inner window through the outer window;
The door of the microwave oven further comprising.
KR1020120080362A 2012-07-24 2012-07-24 Door for microwave oven KR20140014430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120080362A KR20140014430A (en) 2012-07-24 2012-07-24 Door for microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120080362A KR20140014430A (en) 2012-07-24 2012-07-24 Door for microwave oven

Publications (1)

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KR20140014430A true KR20140014430A (en) 2014-02-06

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KR1020120080362A KR20140014430A (en) 2012-07-24 2012-07-24 Door for microwave oven

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170101554A (en) * 2016-02-29 2017-09-06 삼성전자주식회사 Cooking apparatus
CN109642731A (en) * 2016-08-22 2019-04-16 三星电子株式会社 The method of the door of cook utensil, the door for cook utensil and manufacture cook utensil
KR20210062077A (en) * 2018-10-15 2021-05-28 쇼트 브이티에프 Microwave Reflective Panel, Panel Components and Acquisition Method
WO2021241936A1 (en) * 2020-05-26 2021-12-02 삼성전자주식회사 Cooking device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170101554A (en) * 2016-02-29 2017-09-06 삼성전자주식회사 Cooking apparatus
WO2017150897A1 (en) 2016-02-29 2017-09-08 Samsung Electronics Co., Ltd. Cooking apparatus
US10716433B2 (en) 2016-02-29 2020-07-21 Samsung Electronics Co., Ltd. Cooking apparatus
EP3368828B1 (en) * 2016-02-29 2022-04-27 Samsung Electronics Co., Ltd. Cooking apparatus
CN109642731A (en) * 2016-08-22 2019-04-16 三星电子株式会社 The method of the door of cook utensil, the door for cook utensil and manufacture cook utensil
KR20210062077A (en) * 2018-10-15 2021-05-28 쇼트 브이티에프 Microwave Reflective Panel, Panel Components and Acquisition Method
WO2021241936A1 (en) * 2020-05-26 2021-12-02 삼성전자주식회사 Cooking device

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