CN101213406B - Device for preventing microwave leakage from microwave ovens - Google Patents

Abstract

The present invention relates to an apparatus for preventing leakage of microwaves for a microwave oven. The invention comprises the following steps: a cavity assembly formed with an opening portion through which thermal energy generated in the energy generating device is supplied into a cooking chamber provided inside the cavity assembly; a cover disposed on one side of the cavity assembly to cover the opening portion; and a blocking member disposed between the cavity assembly and the cover to prevent the microwaves supplied into the cooking chamber from leaking through a gap between the cavity assembly and the cover. According to the present invention, there is an advantage in that leakage caused by a gap formed when a heating apparatus is installed for supplying a heat source other than microwaves can be effectively prevented.

Description

Device for preventing microwave leakage from microwave ovens

technical field

The present invention relates to a microwave oven, and more particularly, to an apparatus for preventing microwave leakage of a microwave oven in which a heater assembly is installed, capable of preventing microwaves applied to a cooking chamber from leaking to the outside through the periphery of a porous portion.

Background technique

In general, a microwave oven is a cooking appliance for cooking food by applying microwaves generated by various electronic components into a cooking chamber. Recently, a microwave oven having a heater as a heat source in addition to the microwave to cook various foods has been released to the market.

FIG. 8 is an exploded perspective view showing main parts of a microwave oven according to the related art.

As shown, the cooking chamber 711 is disposed within the cavity assembly 710 of the microwave oven. In addition, a porous portion 715 is disposed on the surface of the upper plate 713 of the cavity assembly 710 corresponding to the top plate of the cooking chamber 711 . The porous part 715 is in the form of a substantially rectangular shape and is formed with a plurality of holes penetrating the upper plate 713 .

Furthermore, a heat insulator 717 is mounted on the upper surface of the upper plate 713 . The heater opening portion 718 is formed in a portion of the heat insulator 717 corresponding to the porous portion 715 . Light and/or heat generated in the heater assembly 721 is supplied into the cooking chamber 711 through the heater opening 718 .

Also, a heater base 719 is provided on a portion of the heat insulator 717 corresponding to the inner peripheral portion of the heater opening portion 718 . The heater base 719 is the part that holds the heater assembly 721 . The heater base 719 is shaped in the form of a rectangular frame, and an extension rib 719R extending downward is provided on an inner peripheral portion of the heater base 719 .

The heater base 719 is assembled with the heater assembly 721 . The heater assembly 721 heats food in the cooking chamber 711 by light and/or heat generated by power applied to the heating assembly 721 . The heater assembly 721 is provided with a pair of heaters H7 and H7' for mainly generating light and/or heat. The heaters H7 and H7' may be constituted by, for example, halogen heaters and ceramic heaters.

The heaters H7 and H7' are fixed to the upper surface of the heater holder 723, respectively. A heater holder 723 shaped in the form of a rectangular frame is fixed on the heater base 719 together with heaters H7 and H7' fixed to the upper surface thereof.

A reflection plate 725 is provided above the heaters H7 and H7'. The reflection plate 725 serves to reflect light and/or heat of the heaters H7 and H7' toward the inside of the cooking chamber 711. The reflection plate 725 is provided with a plurality of ventilation holes 725H. The vent holes 725H allow a portion of the airflow generated from the cooling fan assembly (not shown) to be introduced through the vent holes for cooling the heaters H7 and H7'.

In addition, a pair of shield cases 727 and 729 are provided above the reflection plate 725 . The shields 727 and 729 serve to prevent microwaves generated by electronic components and applied into the cooking chamber 711 from leaking to the outside through the porous part 715 . Unexplained reference numeral S7 refers to screws for fixing the heater assembly 721 to the heater base 719 .

However, the microwave ovens according to the above prior art have the following problems.

In the prior art, a plurality of shielding covers 727 and 729 are provided in order to prevent microwaves applied to the cooking chamber 711 from leaking to the outside through the porous part 715 . However, there is a disadvantage that the leakage of microwaves through the porous portion 715 cannot be sufficiently prevented only by the shield covers 727 and 729 .

Contents of the invention

[technical problem]

The present invention has been conceived to solve the aforementioned problems of the prior art. An object of the present invention is to provide an apparatus for preventing leakage of microwaves of a microwave oven, which is configured to prevent leakage of microwaves supplied into a cooking chamber.

Another object of the present invention is to provide an apparatus for preventing microwave leakage of a microwave oven, which is configured to prevent microwave leakage with a simple configuration.

[Technical solutions]

In order to achieve these objects, according to one aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly having a porous part formed on the upper surface, and heat energy generated in the energy generating device passes through the cavity assembly. The porous part is supplied into the cooking chamber provided in the cavity assembly; an insulator is installed on the upper surface of the cavity assembly and is provided with an opening part and a heater base, and the opening part and the Corresponding to the porous part, the heater base is used for mounting the energy generating device and has an extending rib provided on an inner peripheral portion of the heater base and extending downward with a predetermined length; a cover provided on the on one side of the cavity assembly to cover the porous portion; and a blocking member disposed between the heat insulator and the cover to prevent microwaves supplied into the cooking chamber from passing through the opening. leakage, wherein the blocking member is formed with a hollow portion corresponding to the opening portion, and an inner peripheral portion of the hollow portion is provided with a blocking portion consisting of a plurality of alternately arranged sequentially at predetermined intervals A barrier is formed with a recess, and the barrier is inserted into the opening and positioned adjacent to the extension rib.

According to another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly formed with a porous portion on the upper surface, through which heat energy is supplied to the In a cooking chamber within the assembly; an energy generating device mounted on an upper portion of the porous portion and generating thermal energy supplied into the cooking chamber via the porous portion; an insulator mounted in the cavity assembly On the upper surface and is provided with an opening and a heater base, the opening corresponds to the porous part, the heater base is used to install the energy generating device and has a An inner peripheral portion of the inner peripheral portion and an extension rib extending downward with a predetermined length; a cover provided on one side of the cavity assembly to cover the porous portion; and a blocking member provided on the cavity assembly Between one side and the energy generating device, the blocking member prevents microwaves applied to the cooking chamber from leaking to the outside through a gap between the cavity assembly and the energy generating device, wherein the blocking member a hollow portion corresponding to the opening portion is formed, and an inner peripheral portion of the hollow portion is provided with a blocking portion formed of a plurality of blocking pieces and recessed portions alternately arranged sequentially at predetermined intervals, And the blocking portion is inserted into the opening portion and positioned adjacent to the extension rib.

According to still another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is disposed and a porous portion is formed on an upper surface of the cavity assembly; an energy generating a device mounted on an upper portion of the porous portion and generating thermal energy supplied into the cooking chamber via the porous portion; a heat insulator mounted on an upper surface of the cavity assembly and provided with an opening portion and a heater base, the opening part corresponds to the porous part, the heater base is used for mounting the energy generating device and has a part provided on the inner peripheral portion of the heater base with a predetermined length toward an extension rib extending downward; and a blocking member disposed between the heat insulator and the energy generating device, the blocking member preventing microwaves applied to the cooking chamber from passing through the cavity assembly and the energy A gap between generating devices leaks to the outside, wherein the blocking member is formed with a hollow portion corresponding to the opening portion, and an inner peripheral portion of the hollow portion is provided with a blocking portion predetermined by A plurality of dams alternately arranged at intervals are formed with the recessed portion, and the dams are inserted into the opening portion and positioned adjacent to the extension rib.

Preferably, the energy generating means is a heater assembly comprising at least one heater for supplying light or heat supplied into the cooking chamber.

More preferably, the blocking member is formed with a hollow portion corresponding to the opening portion, and an inner peripheral portion of the hollow portion is provided with a blocking portion formed of a plurality of blocking pieces and recessed portions alternately arranged sequentially at predetermined intervals.

According to still another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly, a cooking chamber is provided inside, a heater opening is formed on the surface of the heater opening, and The inner peripheral portion is provided with a blocking portion to prevent leakage of microwaves supplied into the cooking chamber; and a heater assembly installed on an upper portion of the heater opening portion and generates heat energy supplied into the cooking chamber.

According to yet another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is disposed and a porous portion is formed on the surface thereof; an insulator installed in the cavity On the surface of the assembly where the porous portion is formed, a heater opening corresponding to the porous portion is formed, and a blocking portion is provided on an inner peripheral portion of the heater opening to prevent microwaves supplied into the cooking chamber from leakage; and a heater assembly installed on the upper portion of the heater opening and generating thermal energy supplied into the cooking chamber.

Preferably, the inner peripheral portion of the heater opening portion is further provided with a heater base shaped in the form of a rectangular frame, the heater assembly is fixed on the heater base, and the blocking portion is mounted to the inner peripheral portion of the heater base.

According to yet another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly, in which a cooking chamber is arranged and a hole communicating with the cooking chamber is formed on the upper surface of the cavity assembly. a porous portion; an insulator mounted on the upper surface of the chamber assembly and provided with a heater opening and a heater base, the heater opening corresponding to the porous portion, and the heater base a seat for mounting a heater assembly and having an extension rib provided at an inner peripheral portion of the heater base and extending downward with a predetermined length; and the heater assembly mounted at an upper portion of the heater opening portion on, heat energy supplied into the cooking chamber is generated, and a blocking portion for preventing microwaves supplied into the cooking chamber from leaking through a gap between the cavity assembly and the heater assembly is provided, wherein, The blocking portion is formed of a plurality of blocking pieces and recessed portions alternately arranged sequentially at predetermined intervals, and the blocking portion is inserted into the heater opening portion and positioned adjacent to the extension rib.

Preferably, the heater assembly includes: at least one heater for generating light or heat; a heater bracket fixed to a surface of the cavity assembly together with a heater fixed thereon; and a reflection plate for Light or heat of the heater is reflected into the cooking chamber; and the blocking part is integrally formed with the heater bracket or the reflection plate.

More preferably, the heater assembly includes: at least one heater for generating light or heat; a heater bracket fixed to the surface of the cavity assembly together with a heater fixed thereon; a reflection plate for Light or heat of the heater is reflected into the cooking chamber; and a cover member for covering the heater opening portion and the heater, the heater bracket and the reflective plate; and the blocking portion is integrally formed with the cover member.

According to yet another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is arranged and food is heated in the cooking chamber, the cavity assembly is a porous portion is formed on its upper surface; a heater assembly formed on one side of the cavity assembly to supply light or heat for heating food to the In the cooking chamber; an insulator installed on the upper surface of the cavity assembly and provided with a heater opening and a heater base, the heater opening corresponds to the porous portion, the The heater base is used to install the heater assembly; and the leakage prevention device is used to prevent the microwave from leaking through the gap between the cavity assembly and the heater assembly, wherein the leakage prevention device is arranged on the A barrier formed on an inner peripheral portion of the heater base and formed of a plurality of barriers and recesses alternately arranged sequentially at predetermined intervals.

Preferably, the leakage preventing means is a blocking member, which is provided between the cavity assembly and the heater assembly and includes a blocking portion for preventing leakage of microwaves, the blocking portion is composed of a plurality of blocking pieces alternately arranged at predetermined intervals and A recess is formed.

More preferably, the leakage preventing means is a blocking portion mounted to a heater base for fixing the heater assembly, the blocking portion being formed of a plurality of blocking pieces and recesses alternately arranged sequentially at predetermined intervals.

More preferably, the heater base is fixed to an insulator provided on the surface of the chamber assembly.

According to yet another aspect of the present invention, there is provided a device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is arranged and food is heated in the cooking chamber, the cavity assembly is a porous portion is formed on its upper surface; a heater assembly formed on one side of the cavity assembly to supply light or heat for heating food to the In the cooking chamber; and an insulator mounted on the upper surface of the cavity assembly and provided with a heater opening and a heater base, the heater opening corresponding to the porous portion, the The heater base is used for installing the heater assembly; wherein the leakage prevention device is a barrier formed by a plurality of barriers and recesses which are mounted on the heater base and are alternately arranged sequentially at predetermined intervals , and the blocking portion is inserted into the heater opening portion and positioned adjacent to the extension rib.

More preferably, the leak preventing means is a barrier portion mounted on the heater assembly and formed of a plurality of barriers and recesses alternately arranged sequentially at predetermined intervals.

More preferably, the heater assembly includes: at least one heater for generating light or heat; a heater bracket fixed to the surface of the cavity assembly together with a heater fixed thereon; a reflection plate for light or heat of the heater is reflected into the cooking chamber; and a cover member for covering the heater opening portion and the heater, the heater bracket and the reflection plate; and the blocking portion is installed in one of the heater bracket, the reflection plate and the cover member One and the blocking portion is formed by a plurality of blocking pieces and recessed portions alternately arranged sequentially at predetermined intervals.

[beneficial effect]

According to the apparatus for preventing microwave leakage of a microwave oven of the present invention, the following advantages can be expected.

According to the present invention, in order to prevent microwaves supplied into the cooking chamber from leaking through the gap between the cavity assembly and the heater assembly, a blocking member with a blocking portion is provided between the cavity assembly and the heater assembly. Therefore, the stability of a microwave oven using microwaves as a main heating source can be more ensured, thus improving process reliability.

In addition, in the present invention, the blocking part is not provided in a separate blocking member, but may be integrally formed with any one of the chamber assembly or the heating assembly. Accordingly, it is possible to prevent microwaves from leaking to the outside of the cooking chamber with a simpler configuration while reducing man-hours required for production and reducing production costs for processing.

Description of drawings

1 is an exploded perspective view showing a main part of a microwave oven having a first embodiment of an apparatus for preventing microwave leakage according to the present invention;

2 is a perspective view showing a barrier member according to a first embodiment of the present invention;

3 is an exploded perspective view showing a main part of a microwave oven having a second embodiment of the apparatus for preventing microwave leakage according to the present invention;

4 is an exploded perspective view showing a main part of a microwave oven having a third embodiment of the apparatus for preventing microwave leakage according to the present invention;

5 is an exploded perspective view showing a main part of a microwave oven having a fourth embodiment of the apparatus for preventing microwave leakage according to the present invention;

6 is an exploded perspective view showing a main part of a microwave oven having a fifth embodiment of the apparatus for preventing microwave leakage according to the present invention;

7 is an exploded perspective view showing a main part of a microwave oven having a sixth embodiment of the apparatus for preventing microwave leakage according to the present invention; and

FIG. 8 is an exploded perspective view showing main parts of a microwave oven according to the related art.

Detailed ways

[best way]

Hereinafter, preferred embodiments of an apparatus for preventing microwave leakage of a microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a main part of a microwave oven having a first embodiment of a device for preventing microwave leakage according to the present invention, and FIG. 2 is a diagram showing a barrier according to the first embodiment of the present invention. 3D view of the component.

As shown, a cooking chamber 111 selectively opened and closed by a door (not shown) is provided in the cavity assembly 110 of the microwave oven. A porous part 115 in the form of a substantially rectangular shape is provided in the upper plate 113 of the cavity assembly 110 to have a plurality of holes penetrating the upper plate 113 .

The porous part 115 allows light and/or heat of the heater assembly 121 described below to be supplied into the cooking chamber 111 through the porous part 115 . At this time, each hole of the porous part 115 is designed to have a diameter that prevents leakage of microwaves to the outside in consideration of characteristics such as a wavelength of microwaves supplied into the cooking chamber 111 .

Insulator 117 is mounted to upper plate 113 of chamber assembly 110 . The heater opening portion 118 is formed in a part of the heat insulator 117 , that is, a portion corresponding to the porous portion 115 . Light and/or heat generated in the heater assembly 121 is supplied into the cooking chamber 111 through the heater opening 118 . The heater opening portion 118 is formed in a rectangular shape corresponding to the porous portion 115 .

In addition, a heater base 119 is provided on a portion of the upper plate 113 corresponding to the heater opening 118 . The heater base 119 is used to mount a heater assembly 121 . The heater base 119 is shaped in the form of a rectangular frame. Also, an extension rib 119R extending downward by a predetermined length is provided on an inner peripheral portion of the heater base 119 .

The heater base 119 is assembled with the heater assembly 121 . The heater assembly 121 generates predetermined energy as a heat source other than microwaves. For example, the heater assembly 121 is provided with a heater, a lamp, etc. for generating light and/or heat by supplying power thereto, and the light and/or heat is used as a heat source for heating food loaded in the cooking chamber 111 . In the present invention, use of the heater assembly 121 is intended to include all means for generating energy capable of heating food, except microwaves.

The heater assembly 121 is provided with heaters H1 and H1' for generating light and/or heat by supplying power thereto. In the present invention, any type of heater such as a halogen lamp or a ceramic heater can be used as the heaters H1 and H1' as long as they can generate light or heat by supplying electric power thereto. The heaters H1 and H1' are fixed on the upper surface of the heater holder 123 shaped in the form of a rectangular frame. A heater bracket 123 is mounted to the upper surface of the heat insulator 117 adjacent to the heater opening 118 together with the heaters H1 and H1' fixed to the upper surface thereof.

The reflection plate 125 is disposed above the heaters H1 and H1'. The reflection plate 125 installed to surround the heaters H1 and H1' from the top serves to reflect light and/or heat generated in the heaters H1 and H1' into the cooking chamber 111 through the heater opening part 118 and the porous part 115. In addition, the reflection plate 125 is formed with a plurality of ventilation holes 125H for cooling the heaters H1 and H1'.

The porous part 115 simultaneously performs a function of allowing light and heat generated in the heater to enter into the cooking chamber 111 and a function of preventing microwaves supplied into the cooking chamber from leaking to the outside. That is, by designing the circular hole of the porous portion 115 to an appropriate size, it is possible to prevent leakage of microwaves having a predetermined wavelength. Such a porous portion structure itself is applied to devices such as doors of microwave ovens. Also, microwaves leaking from the porous portion 115 are more safely blocked by the blocking member 131 of the present invention which will be described below.

In addition, a pair of shield cases 127 and 129 are installed above the reflecting plate 125 . The shields 127 and 129 prevent microwaves applied to the cooking chamber 111 from leaking through the porous part 115 and the heater opening part 118 .

Meanwhile, the blocking member 131 is disposed between the heat insulator 117 and the heater assembly 121 . The blocking member 131 is installed on the heater base 119 of the heat insulator 117, thereby preventing microwaves applied to the cooking chamber 111 from passing through the gap between the heater assembly 121 and the heater base 119, that is, the heater opening 118. The gap leaks to the outside.

As specifically shown in FIG. 2 , the blocking member 131 is formed in a rectangular shape for covering the heater opening portion 118 . A hollow portion 133 is formed in the blocking member 131 . The hollow part 133 allows light and/or heat generated in the heaters H1 and H1' to be supplied into the cooking chamber 111.

The hollow portion 133 is formed in a shape and size corresponding to the heater opening portion 118 . Also, a blocking portion 135 is provided on an inner peripheral portion of the hollow portion 133 . The blocking portion 135 extends downward from the inner peripheral portion of the hollow portion 133 . When the blocking member 131 is coupled with the heater base 119 , the blocking portion 135 is inserted into the opening portion 118 of the heater base 119 and positioned adjacent to the extension rib 119R.

The blocking portion 135 is formed to include rectangular protrusions (blockers) and recessed portions alternately arranged sequentially at predetermined intervals on the inner periphery of the hollow portion 133 . Preventing microwave leakage by the blocking part 135 is known, and thus a detailed description thereof will be omitted.

The size of the barriers applied to the door and the intervals between the barriers are determined depending on the wavelength of the microwave and the size of the opening. Typically, the barriers are designed such that the width of the barriers is about 12.0 mm and the spacing between the barriers is 7.0 mm to 8.0 mm. The longer the barrier, the more effectively microwave leakage can be prevented. However, the barrier is usually designed to be around 6.5mm.

Therefore, in the present embodiment, the blocking portion 135 is designed in consideration of the shape and size of the heater opening portion 118 . Also, naturally, microwave leakage can be substantially prevented by the shape, size, etc. of the barrier and the recessed portion of the barrier portion 135 . However, since the extension rib 119R extending downward is provided on the inner peripheral portion of the heater base 119 , the blocking portion 135 is designed to be longer than the extension rib 119R.

Also, in the present embodiment, the blocking member 133 is disposed between the heater base 119 and the heater assembly 121 so that the blocking portion 135 is directed downward. However, it is also possible to install the blocking member 133 so that the blocking portion 135 is directed upward by rotating 180 degrees from the state shown in FIGS. 1 and 2 .

Hereinafter, the operation of the first embodiment of the apparatus for preventing microwave leakage of a microwave oven constructed according to the present invention will be described in detail.

First, the heat insulator 117 in which the heater base 119 is installed in advance is assembled to the upper plate 113 of the cavity assembly 110 . At this time, in the process of installing the heat insulator 117, the porous portion 115 of the upper plate 113 and the heater opening portion 118 of the heat insulator 117 are placed in positions corresponding to each other.

In this state, the blocking member 131 is fixed to the heat insulator 117 , substantially to the heater base 119 . At this time, the blocking member 131 is fixed to the heat insulator 117 such that the blocking portion 135 of the blocking member 131 is placed in a region in the porous portion 115 and the heater opening portion 118 .

Then, the heater holder 123 in which the heaters H1 and H1' and the reflection plate 125 are preassembled is placed on a portion of the heater base 119 corresponding to the heater opening portion 118. Then, the shield cases 127 and 129, the reflection plate 125, the blocking member 131, the heat insulator 117, and the upper plate 113 of the cavity assembly 110 are fastened to each other using the screws S1, thereby completing the assembly.

Meanwhile, a blocking portion 135 capable of preventing leakage of microwaves is provided on an inner side surface of the heater opening portion 118 when the assembly is completed. Accordingly, the blocking portion 135 of the blocking member 131 may reliably prevent microwaves from leaking from the gap between the heater opening portion 118 and the heater assembly 121 during cooking of food in the cooking chamber 111 using microwaves.

[implementation mode]

Hereinafter, a second embodiment of the device for preventing microwave leakage according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view showing a main part of a microwave oven having a second embodiment of the apparatus for preventing microwave leakage according to the present invention.

As shown, a heater opening 215 is formed on an upper plate 213 of a cavity assembly 210 provided with a cooking chamber 211 for cooking food. In addition, a heater base 219 is provided at a portion of the upper plate 213 corresponding to the heater opening 215 .

The heater base 219 is assembled with a heater assembly 221 . In the present embodiment, the configuration of the heater assembly 221, that is, the heaters H2 and H2', the heater holder 223, the reflection plate 225, and the shields 227 and 229 is the same as that of the foregoing first embodiment. The heater assembly 221 is fixed with screws S2.

At this time, the blocking member 231 is disposed between the upper plate 213 and the heater assembly 221 , substantially between the heater base 219 and the heater assembly 221 . The same blocking member 231 as in the first embodiment serves to prevent leakage of microwaves applied to the cooking chamber 211 . That is, the blocking member 231 is formed with a hollow portion 233 corresponding to the opening portion 215 . In addition, the blocking portion 235 extends downward from the inner peripheral portion of the hollow portion 233 .

That is, compared with the aforementioned first embodiment, the present embodiment omits the porous portion and the heat insulator. Therefore, unlike the first embodiment in which the heating body base is disposed in the heat insulator, in this embodiment the heating body base 219 is fixed on the upper plate 213, and is different from the first embodiment in the heat insulator. Unlike forming the heater opening, the heater opening 215 is formed in the upper plate 213 in this embodiment. In addition, a blocking member 231 is disposed between the heater assembly 221 and the base 219 disposed in the upper plate 213 .

Next, a third embodiment of the device for preventing microwave leakage according to the present invention will be described in detail with reference to the accompanying drawings.

4 is an exploded perspective view showing a main part of a microwave oven having a third embodiment of the apparatus for preventing microwave leakage according to the present invention.

As shown, a cooking chamber selectively opened and closed by a door (not shown) is provided in the cavity assembly 310 of the microwave oven. Also, the upper plate 313 of the cavity assembly 310 is formed with a porous part 315 in which a plurality of holes are formed. The porous part 315 allows light and/or heat of a heater assembly 321 described below to be supplied into the cooking chamber 311 through the porous part 315 .

The upper plate 313 is assembled with the heat insulator 317 . The heater opening 318 is formed in the face of the heat insulator 317 . The heater opening portion 318 is placed at a position corresponding to the porous portion 315 when the heat insulator 317 is mounted on the upper plate 313 . Then, light and/or heat of the heater assembly 321 is supplied into the cooking chamber 311 through the porous part 315 and the heater opening part 318 .

A heater base 319 is attached to a portion of the heat insulator 317 corresponding to the inner peripheral portion of the heater opening portion 318 . The heater base 319 is a portion where the heater assembly 321 is actually mounted. Furthermore, a blocking portion 320 is provided on an inner peripheral portion of the heater base 319 . The blocking part is formed in the same shape as the aforementioned first embodiment, thereby serving to prevent microwaves applied into the cooking chamber 311 from leaking through a gap between the heater base 319 and the heater assembly 321 .

That is, in the present embodiment, the blocking portion 320 is formed not on the additional member but on the heater base 319 . Therefore, unlike the aforementioned first embodiment, according to the present embodiment, no additional blocking member with the blocking portion 320 is provided, thereby preventing microwaves applied to the cooking chamber 311 from passing through the heater base 319 with a simpler configuration. The gap with the heater assembly 321 leaks.

Furthermore, the heater base 319 is provided with a heater assembly 321 . The heater assembly 321 that supplies light and/or heat into the cooking chamber 311 via the heater opening portion 318 and the porous portion 315 includes heaters H3 and H3′, a heater holder 323, a reflection plate 325, and shield covers 327 and 329, which Elements are the same as in the foregoing embodiments and thus descriptions thereof are omitted.

A fourth embodiment of the device for preventing microwave leakage according to the present invention will be described in detail with reference to the accompanying drawings.

5 is an exploded perspective view showing a main part of a microwave oven having a fourth embodiment of the apparatus for preventing microwave leakage according to the present invention.

As shown, the cooking chamber 411 is disposed within the cavity assembly 410 of the microwave oven. In addition, the porous part 415 is disposed in a face corresponding to the top plate of the cooking chamber 411 on the upper plate 413 of the cavity assembly 410 . Also, a heat insulator 417 is mounted on the upper surface of the upper plate 413 , and a heater opening portion 418 is formed in the face of the heat insulator 417 . Further, the heat insulator 417 is provided with a heater base 419 provided with an extension rib 419R extending downward from an inner peripheral portion thereof.

The heater base 419 is assembled with the heater assembly 421 . The heater assembly 421 includes a pair of heaters H4 and H4', a heater bracket 423, a reflection plate 425, and shield cases 427 and 429. Since these configurations of the present embodiment are the same as those in the aforementioned first embodiment, their detailed description will be omitted.

However, in the present embodiment, the blocking part 424 that prevents the microwave applied to the cooking chamber 411 for heating food from leaking through the gap between the heater base 419 and the heater assembly 421 is provided at the edge of the heater bracket 423 bottom surface.

That is, the blocking portion 424 is formed such that rectangular-shaped blocking pieces and recessed portions extending downward from the inner peripheral portion of the heater holder 424 are sequentially arranged alternately at predetermined intervals. Accordingly, the blocking portion 424 is placed within the heater opening portion 418 . The shape and size of the blocking portion 424 are determined according to the shape and size of the heater opening portion 418 to more effectively prevent microwave leakage.

In other words, in the present embodiment, since the blocking portion 424 is integrally formed with the heater holder 423 , there is no need for an additional member for providing the blocking portion as in the aforementioned third embodiment. Thus, leakage of microwaves applied into the cooking chamber 411 is prevented with a simpler configuration.

A fifth embodiment of the apparatus for preventing microwave leakage according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 6 is an exploded perspective view showing a main part of a microwave oven having a fifth embodiment of the apparatus for preventing microwave leakage according to the present invention.

As shown in the figure, in this embodiment, the cooking chamber 511 is disposed in the cavity assembly 510 , and the porous part 515 is disposed in the surface of the upper plate 513 of the cavity assembly 510 . Also, an insulator 517 formed with a heater opening 518 is mounted on the upper surface of the upper plate 513 . Furthermore, the insulator 517 is provided with a heater base 519 for fixing the heater assembly 521 .

Meanwhile, the heater assembly 521 includes a pair of heaters H5 and H5', a heater bracket 523, a reflection plate 525, and shield cases 527 and 529. In the present embodiment, the heater bracket 523 is substantially formed in an "I" shape. This is done to allow a blocking portion 528 , which will be described below, to pass through the heater holder 523 and be placed within the heater opening portion 518 . Accordingly, the heater bracket 523 may be shaped in a rectangular frame form in the related art, and a slit for allowing the blocking part 528 to pass therethrough may be formed in the reflective plate 525 .

In addition, in this embodiment, the shielding case 527 located at a relatively lower position among the shielding cases 527 and 529 is provided with a blocking portion 528 . The blocking part 528 is used to prevent microwaves applied to the cooking chamber 511 for heating food from leaking through a gap between the heater base 519 and the heater assembly 521 . The blocking portion 528 extends downward from the bottom surface of the edge of the shielding case 527 , passes through two sides of the heater bracket 523 and is placed in the heater opening 518 .

That is, in this embodiment, the blocking portion 528 is integrally formed with the shield cover 527 . Thus, like the aforementioned third and fourth embodiments, leakage of microwaves applied to cooking chamber 511 can be prevented with a simple configuration.

A sixth embodiment of the device for preventing microwave leakage according to the present invention will be described in detail with reference to the accompanying drawings.

7 is an exploded perspective view showing a main part of a microwave oven having a sixth embodiment of the apparatus for preventing microwave leakage according to the present invention.

As shown, the cooking chamber 611 is disposed within the cavity assembly 610 of the microwave oven. The cooking chamber 611 in which food is heated is selectively opened and closed by a door (not shown). In addition, the upper plate 613 of the cavity assembly 610 is formed with a heater opening 615 . The heater opening 615 is formed in a rectangular shape by cutting out a part of the upper plate 613 .

In the present embodiment, the blocking portion 616 is provided on the inner peripheral portion of the heater opening portion 615 . The blocking portion serves to prevent microwaves applied into the cooking chamber 611 from leaking to the outside through a gap between the heater opening portion 615 and a heater assembly 621 which will be described below. The blocking portion 616 may be substantially integral with the upper plate 613 . That is, in the process of cutting a part of the upper plate 613 to form the heater opening 615, a portion of the upper plate 613 corresponding to the inner peripheral portion of the heater opening 615 is cut such that the rectangular-shaped barrier is in contact with the recessed portion. Parts are arranged alternately, and then the blocking parts are bent downward to be perpendicular to the upper plate 613 , thereby forming the blocking parts 616 .

Meanwhile, the upper plate 613 is provided with a heater assembly 621 . The heater assembly 621 supplies light and/or heat for heating food into the cooking chamber 611 . Here, the configuration of the heater assembly 621 including the heaters H6 and H6', the heater holder 623, the reflection plate 625, and the shield cases 627 and 629 is the same as that of the foregoing first embodiment, so that their detailed descriptions are omitted. .

As in the aforementioned third to fifth embodiments, the additional member with the blocking portion can also be omitted in this embodiment. That is, according to the present embodiment, the blocking part 616 is integrally formed with the upper plate 613, whereby leakage of microwaves can be prevented in a simple manner.

The scope of the present invention is not limited to the above-described embodiments, but is defined by the claims. It is obvious that those skilled in the art can make various modifications and changes within the scope of the present invention defined by the claims.

Claims (8)

1. A device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly formed on an upper surface with a porous portion through which thermal energy generated in the energy generating device is supplied into a cooking chamber provided in the cavity assembly; an insulator mounted on the upper surface of the chamber assembly and provided with an opening corresponding to the porous portion and a heater base for installing the energy generating means and having an extension rib provided at an inner peripheral portion of the heater base and extending downward by a predetermined length; a cover disposed on one side of the chamber assembly to cover the porous portion; and a blocking member provided between the heat insulator and the cover to prevent microwaves supplied into the cooking chamber from leaking through the opening portion, Wherein, the blocking member is formed with a hollow portion corresponding to the opening portion, and the inner peripheral portion of the hollow portion is provided with a blocking portion composed of a plurality of blocking pieces alternately arranged at predetermined intervals. A recess is formed, and the barrier is inserted into the opening and positioned adjacent to the extension rib. 2. A device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly formed on an upper surface with a porous portion through which thermal energy is supplied into a cooking chamber disposed within the cavity assembly; an energy generating device installed on an upper portion of the porous portion and generating thermal energy supplied into the cooking chamber via the porous portion; an insulator mounted on the upper surface of the chamber assembly and provided with an opening corresponding to the porous portion and a heater base for installing the energy generating means and having an extension rib provided at an inner peripheral portion of the heater base and extending downward by a predetermined length; a cover disposed on one side of the chamber assembly to cover the porous portion; and a blocking member disposed between one side of the cavity assembly and the energy generating device, the blocking member preventing microwaves applied to the cooking chamber from passing between the cavity assembly and the energy generating device gap leaks to the outside, Wherein, the barrier member is formed with a hollow portion corresponding to the opening, and the inner peripheral portion of the hollow portion is provided with a barrier portion, and the barrier portion is formed with a plurality of barriers arranged alternately at predetermined intervals. A member and a recess, and the barrier is inserted into the opening and positioned adjacent to the extension rib. 3. A device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is provided and a porous portion is formed on an upper surface of the cavity assembly; an energy generating device installed on an upper portion of the porous portion and generating thermal energy supplied into the cooking chamber via the porous portion; an insulator mounted on the upper surface of the chamber assembly and provided with an opening corresponding to the porous portion and a heater base for installing the energy generating means and having an extension rib provided at an inner peripheral portion of the heater base and extending downward by a predetermined length; and a blocking member disposed between the heat insulator and the energy generating device, the blocking member preventing microwaves applied into the cooking chamber from leaking through a gap between the cavity assembly and the energy generating device to the outside, Wherein, the blocking member is formed with a hollow portion corresponding to the opening portion, and the inner peripheral portion of the hollow portion is provided with a blocking portion composed of a plurality of blocking pieces alternately arranged at predetermined intervals. A recess is formed, and the barrier is inserted into the opening and positioned adjacent to the extension rib. 4. Apparatus according to any one of claims 1 to 3, wherein the energy generating means is a heater comprising at least one heater or lamp for generating light or heat supplied into the cooking chamber components. 5. A device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly, wherein a cooking chamber is provided and a porous portion communicating with the cooking chamber is formed on the upper surface of the cavity assembly; an insulator, which is installed on the upper surface of the cavity assembly and is provided with a heater opening and a heater base, the heater opening corresponds to the porous part, and the heater base is used for installing a heater assembly and having an extension rib provided at an inner peripheral portion of the heater base and extending downward by a predetermined length; and The heater assembly, which is mounted on an upper portion of the heater opening, generates heat energy supplied into the cooking chamber, and is provided with a device for preventing microwaves supplied into the cooking chamber from passing through the cavity. a gap leak barrier between the assembly and the heater assembly, Wherein, the blocking portion is formed of a plurality of blocking pieces and recessed portions alternately arranged sequentially at predetermined intervals, and the blocking portion is inserted into the heater opening portion and positioned adjacent to the extension rib. 6. The apparatus as claimed in claim 5, wherein said heater assembly comprises: at least one heater for generating light or heat; and a reflection plate for reflecting the light or heat of the heater into the cooking chamber; and the blocking part is connected with the heater bracket or the The reflection plate is integrally formed. 7. The apparatus as claimed in claim 5, wherein said heater assembly comprises: at least one heater for generating light or heat; and the heater are fixed together on the surface of the cavity assembly; a reflection plate for reflecting the light or heat of the heater into the cooking chamber; and a covering member for covering the heater opening and the heater opening. The heater, the heater holder, and the reflective plate; and the blocking portion is integrally formed with the covering member. 8. A device for preventing microwave leakage of a microwave oven, comprising: a cavity assembly in which a cooking chamber is provided and food is heated in said cooking chamber, said cavity assembly having a porous portion formed on its upper surface; a heater assembly formed on one side of the cavity assembly to supply light or heat for heating food into the cooking chamber via the porous portion communicating with the cooking chamber; an insulator, which is installed on the upper surface of the cavity assembly and is provided with a heater opening and a heater base, the heater opening corresponds to the porous part, and the heater base is used for Install the heater assembly; and a leakage prevention device for preventing microwave leakage through a gap between the cavity assembly and the heater assembly, Wherein, the leakage prevention means is a barrier provided on an inner peripheral portion of the heater base and formed of a plurality of barriers and recesses alternately arranged sequentially at predetermined intervals.

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