CN210093604U - Shielding door structure of microwave oven - Google Patents
Shielding door structure of microwave oven Download PDFInfo
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- CN210093604U CN210093604U CN201920894729.6U CN201920894729U CN210093604U CN 210093604 U CN210093604 U CN 210093604U CN 201920894729 U CN201920894729 U CN 201920894729U CN 210093604 U CN210093604 U CN 210093604U
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Abstract
The utility model discloses a microwave oven shield door structure, wherein, including the microwave oven cavity, the microwave oven cavity openly is provided with the microwave oven door body, the microwave oven door body all around with the opening hem department of microwave oven cavity is provided with the shielding layer, the shielding layer sets up on the microwave oven door body, the shielding layer is provided with the multichannel, through setting up the shielding layer of different shielding property, guarantees that microwave energy seals up in the microwave oven cavity, the utility model discloses a multichannel shielding layer structure when realizing the low frequency operation, guarantees microwave efficiency and shielding property, and cancellation choke groove design can effectively reduce cavity size and reduce cost.
Description
Technical Field
The utility model relates to a microwave oven field especially relates to a microwave oven shield door structure.
Background
The traditional microwave oven adopts a 2.45GHz magnetron as a microwave source, and a microwave oven door generally designs a choke groove with 1/4 wavelength aiming at 2.45GHz high frequency to guide the microwave reverse phase so as to enable the microwave to be offset with a reflected wave at the oven door opening to block microwave leakage. And if a low frequency 900MHz microwave source is used, the choke groove needs to be designed 1/4 with a wavelength of 82.5 mm, which is not practical in a miniaturized cavity.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art not enough, an object of the utility model is to provide a microwave oven shield door structure aims at solving in the miniaturized cavity, guarantees the microwave heating efficiency of low frequency operation and prevents the problem that the microwave was revealed.
The technical scheme of the utility model as follows:
the utility model provides a microwave oven shielding door structure, wherein, includes the microwave oven cavity, the microwave oven cavity openly is provided with the microwave oven door body, the microwave oven door body all around with the opening hem department of microwave oven cavity is provided with the shielding layer, the shielding layer sets up on the microwave oven door body, the shielding layer is provided with the multichannel, and through setting up the shielding layer of different shielding performance, guarantee that microwave energy is sealed in the microwave oven cavity.
The microwave oven shielding door structure is characterized in that the shielding layer is made of flexible materials, and the microwave oven door body is elastically connected with the microwave oven cavity through the shielding layer.
The shielding door structure of the microwave oven is characterized in that the shielding layer is provided with two shielding layers which are arranged side by side from inside to outside.
The shielding door structure of the microwave oven is characterized in that one of the two shielding layers is a soft electromagnetic shielding adhesive tape, and the other shielding layer is a reed.
The shielding door structure of the microwave oven is characterized in that the flexible electromagnetic shielding rubber strip is arranged in a cavity close to the microwave oven, and the reed is arranged on the outer side of the flexible electromagnetic shielding rubber strip.
The shielding door structure of the microwave oven is characterized in that the cross section of the soft electromagnetic shielding rubber strip is circular or elliptical.
Microwave oven shield door structure, wherein, the reed is provided with straight portion and arch, the microwave oven cavity with the microwave oven door body passes through straight portion and protruding elastic connection, the straight portion of protruding one side is connected with soft electromagnetic shield adhesive tape, guarantees the shielding leakproofness.
The shielding door structure of the microwave oven is characterized in that the flexible electromagnetic shielding rubber strip is made of high polymer material mixed with good conductor metal powder.
The shielding door structure of the microwave oven is characterized in that the reed is a beryllium copper reed and is made of beryllium copper alloy.
The microwave oven shielding door structure is characterized in that the microwave oven door body is made of metal materials, and the microwave oven door body is provided with a perspective hole.
Has the advantages that: the utility model discloses a microwave oven shield door structure, wherein, including the microwave oven cavity, the microwave oven cavity openly is provided with the microwave oven door body, the microwave oven door body all around with the opening hem department of microwave oven cavity is provided with the shielding layer, the shielding layer sets up on the microwave oven door body, the shielding layer is provided with the multichannel, through setting up the shielding layer of different shielding property, guarantees that microwave energy seals up in the microwave oven cavity, the utility model discloses a multichannel shielding layer structure when realizing the low frequency operation, guarantees microwave heating efficiency and prevents that the microwave from revealing, and cancellation choke groove design can effectively reduce cavity size and reduce cost.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic view of the shielding door structure of the microwave oven of the present invention.
Detailed Description
The utility model provides a microwave oven shield door structure, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Please refer to fig. 1, for the schematic diagram of the microwave oven shield door structure, the utility model discloses a microwave oven shield door structure, wherein, including microwave oven cavity 101, microwave oven cavity 101 openly is provided with the microwave oven door body 102, around the microwave oven door body 102 with the opening hem department of microwave oven cavity is provided with shielding layer 103, shielding layer 103 sets up on the microwave oven door body 102, shielding layer 103 is provided with the multichannel, and through setting up different shielding performance's shielding layer 103, guarantee that microwave energy is sealed in the microwave oven cavity 101.
Microwave ovens (microwave oven/microwave), as the name suggests, are modern cooking stoves that use microwaves to heat food. Microwaves are electromagnetic waves. The microwave oven is composed of power supply, magnetron, control circuit and cooking cavity. The power supply provides about 4000V high voltage to the magnetron, which continuously generates microwave under the excitation of the power supply, and the microwave is coupled into the cooking cavity through the waveguide system. Near the entrance of the cavity, there is a rotatable stirrer, which is a fan-shaped metal, and which has all directional reflections of the microwave after rotating, so that the microwave energy can be uniformly distributed in the cavity, thereby heating the food. The power range of the microwave oven is generally 500-1000W.
The traditional microwave oven adopts a 2.45GHz magnetron as a microwave source, and a microwave oven door generally designs a choke groove with 1/4 wavelength aiming at 2.45GHz high frequency to guide the microwave reverse phase so as to enable the microwave to be offset with a reflected wave at the oven door opening to block microwave leakage. And if a low frequency 900MHz microwave source is used, the choke groove needs to be designed 1/4 with a wavelength of 82.5 mm, which is not practical in a miniaturized cavity.
Therefore, to prior art's defect, the utility model provides a microwave oven shield door structure can shield the microwave in miniaturized cavity, guarantees that microwave energy does not reveal to guarantee microwave efficiency. Specifically, the microwave oven cavity: the microwave oven cavity is formed by stamping or welding multi-surface metal and is used for generating microwave resonance and carrying food. The opening of the furnace chamber is provided with a folding edge, and generally, a metal panel can be independently used for stamping and then welding in order to ensure the flatness. The microwave oven comprises a microwave oven cavity, a microwave oven door body, a shielding layer, a plurality of shielding layers and a plurality of shielding layers, wherein the shielding layers are arranged at the joint of the microwave oven cavity and the microwave oven door body, the shielding efficiency of different shielding layers can be the same or different, different shielding efficiencies can be selected to be matched for use according to actual requirements, different microwave frequencies can be met, the shielding performance of the shielding layers corresponding to the requirements can be met, and the microwave energy is ensured to be sealed in the microwave oven cavity.
Further, the shielding door structure of the microwave oven, wherein the shielding layer 103 is made of a flexible material, and the microwave oven door body 102 is elastically connected with the microwave oven cavity 101 through the shielding layer 103.
Microwave oven shield door structure, preferred the shielding layer is made for flexible material, increases the adaptability, because the microwave oven door body is not necessarily leveled with being connected between the microwave oven cavity, through elastic connection, guarantees stability.
Further, the shielding door structure of the microwave oven, wherein the shielding layer 103 is provided with two channels, and the two shielding layers 103 are arranged side by side from inside to outside.
Microwave oven shield door structure, preferred embodiment, the shielding layer is provided with the twice to, twice shielding layer from interior to exterior sets up side by side, and the purpose that sets up side by side is in order to guarantee shielding stability. And the microwave energy leakage caused by a gap between the two shielding layers is avoided.
Further, the shielding door structure of the microwave oven, wherein one of the two shielding layers is a soft electromagnetic shielding adhesive tape 301, and the other shielding layer is a reed 302.
Microwave oven shield door structure, preferred embodiment, in the shielding layer, be soft electromagnetic shield adhesive tape together, be the reed in addition together, through the shielding layer of different materials, the cooperation is used, guarantees connection stability and shielding efficiency.
Further, the shielding door structure of the microwave oven, wherein the flexible electromagnetic shielding rubber strip 301 is disposed in the cavity 101 close to the microwave oven, and the spring 302 is disposed outside the flexible electromagnetic shielding rubber strip 301.
Microwave oven shield door structure, preferred soft electromagnetic shield adhesive tape sets up in being close to the microwave oven cavity, because soft electromagnetic shield adhesive tape's shape is compared in the reed, and adaptability is stronger, is difficult to reveal microwave energy promptly.
Further, in the shielding door structure of the microwave oven, the cross section of the flexible electromagnetic shielding rubber strip 301 is circular or elliptical.
Microwave oven shield door structure, preferred embodiment, the preferred circular or oval in cross-section of soft electromagnetic shield adhesive tape, consequently, when soft electromagnetic shield adhesive tape closed at the microwave oven door body, extrusion was received to soft electromagnetic shield adhesive tape, but because the cross-section of soft electromagnetic shield adhesive tape is circular or oval, consequently, one side that soft electromagnetic shield adhesive tape is close to the microwave oven cavity is the arc structure, and extrusion is received to soft electromagnetic shield adhesive tape, and soft electromagnetic shield adhesive tape and the microwave oven door body and microwave oven cavity junction zonulae occludens to guaranteed the shielding of energy, avoided microwave energy to reveal.
Further, the shielding door structure of the microwave oven, wherein the spring plate 302 is provided with a straight portion 3021 and a protrusion 3022, the cavity 101 of the microwave oven and the door 102 of the microwave oven are elastically connected through the straight portion 3021 and the protrusion 3022, the straight portion 3021 on one side of the protrusion 3022 is connected with the soft electromagnetic shielding rubber strip 301, and the shielding sealing performance is ensured.
Microwave oven shield door structure, preferred embodiment, the reed is provided with straight portion and convex part, supports microwave oven door body and microwave oven cavity through straight portion and convex part, and because the shielding layer that is close to the microwave oven cavity is soft electromagnetic shield adhesive tape, consequently, the straight portion in one side of reed can be connected with soft electromagnetic shield adhesive tape, because the circular or oval structure's of soft electromagnetic shield adhesive tape particularity, in addition the extrusion of microwave oven door body and microwave oven cavity, can make reed and soft electromagnetic shield adhesive tape in close contact with to guarantee shielding property.
Further, in the shielding door structure of the microwave oven, the flexible electromagnetic shielding rubber strip 301 is made of a polymer material mixed with good conductor metal powder.
Microwave oven shield door structure, preferred embodiment, soft electromagnetic shield adhesive tape: the novel polymer material is generally a novel polymer material which is prepared by filling fine conductive particles such as aluminum, silver, copper and other metal materials into silicon rubber according to a certain proportion, has high conductivity and sealing performance, and simultaneously completes environmental sealing and electromagnetic sealing. The material has higher isolation to microwave 900MHz and 2.45GHz bands, which is 100-120 dB.
Further, in the shielding door structure of the microwave oven, the reed 302 is a beryllium copper reed and is made of beryllium copper alloy.
In the preferred embodiment of the present invention, the reed is a beryllium copper reed made of beryllium copper alloy, which has high conductivity, high tensile elasticity, and good corrosion resistance, and the microwave shielding performance is 60-100 dB. Conductive foam is also a suitable material for the application.
Further, in the shielding door structure of the microwave oven, the door body 102 of the microwave oven is made of a metal material, and the door body of the microwave oven is provided with a see-through hole.
The utility model discloses preferred embodiment, the microwave oven door body is the metal material, but the perspective hole, and the door body has twice shielding layer with furnace chamber opening hem department design all around, and the inlayer is soft electromagnetic shield adhesive tape, and the skin is beryllium bronze piece. The inner and outer shielding layers are elastically connected, and can still have good electric conductor performance when the contact surface has certain flatness tolerance, so that the door body is connected with the furnace chamber.
The beneficial effects of the utility model reside in that: the double-layer shielding isolation design of the utility model can have good shielding effect for both low frequency 900MHz and high frequency 2.45GHz, and the theoretical shielding capacity exceeds 160 dB; the elimination of the choke groove design can effectively reduce the size of the cavity and reduce the cost.
To sum up, the utility model discloses a microwave oven shield door structure, wherein, including the microwave oven cavity, the microwave oven cavity openly is provided with the microwave oven door body, the microwave oven door body all around with the opening hem department of microwave oven cavity is provided with the shielding layer, the shielding layer sets up on the microwave oven door body, the shielding layer is provided with the multichannel, through setting up the shielding layer of different shielding property, guarantees that microwave energy seals up in the microwave oven cavity, the utility model discloses a multichannel shielding layer structure when realizing the low frequency operation, guarantees microwave heating efficiency and prevents that microwave from revealing, and cancellation choke groove design can effectively reduce cavity size and reduce cost.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a microwave oven shield door structure, a serial communication port, including the microwave oven cavity, the microwave oven cavity openly is provided with the microwave oven door body, the microwave oven door body all around with the opening hem department of microwave oven cavity is provided with the shielding layer, the shielding layer sets up on the microwave oven door body, the shielding layer is provided with the multichannel, and through setting up the shielding layer of different shielding property, guarantee that microwave energy is sealed in the microwave oven cavity.
2. The shielding door structure of claim 1, wherein the shielding layer is made of a flexible material, and the microwave oven door body is elastically connected to the microwave oven cavity through the shielding layer.
3. The shielded door structure of claim 2, wherein the shielding layer is provided in two layers, and the two layers are arranged side by side from inside to outside.
4. The shielded door structure of claim 3, wherein one of the two shielding layers is a soft electromagnetic shielding tape, and the other shielding layer is a spring.
5. The shielding door structure of claim 4, wherein the flexible electromagnetic shielding rubber strip is disposed near the cavity of the microwave oven, and the spring is disposed outside the flexible electromagnetic shielding rubber strip.
6. The shielding door structure of claim 5, wherein the flexible electromagnetic shielding rubber strip has a circular or elliptical cross-section.
7. The shielding door structure of claim 6, wherein the spring plate is provided with a flat portion and a protrusion, the cavity and the door body of the microwave oven are elastically connected through the flat portion and the protrusion, and the flat portion on one side of the protrusion is connected with the soft electromagnetic shielding rubber strip to ensure the sealing performance of the shielding.
8. The shielding door structure of claim 7, wherein the flexible electromagnetic shielding tape is made of a polymer material mixed with fine conductive metal powder.
9. The microwave oven shielded door structure of claim 8 wherein the spring is a beryllium copper spring made of beryllium copper alloy.
10. The shielding door structure of claim 1, wherein the door body is made of metal, and the door body is provided with a transparent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920894729.6U CN210093604U (en) | 2019-06-14 | 2019-06-14 | Shielding door structure of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920894729.6U CN210093604U (en) | 2019-06-14 | 2019-06-14 | Shielding door structure of microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210093604U true CN210093604U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920894729.6U Active CN210093604U (en) | 2019-06-14 | 2019-06-14 | Shielding door structure of microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210093604U (en) |
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2019
- 2019-06-14 CN CN201920894729.6U patent/CN210093604U/en active Active
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