CN103604143A - Double-frequency microwave oven door and double-frequency microwave oven - Google Patents
Double-frequency microwave oven door and double-frequency microwave oven Download PDFInfo
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- CN103604143A CN103604143A CN201310591004.7A CN201310591004A CN103604143A CN 103604143 A CN103604143 A CN 103604143A CN 201310591004 A CN201310591004 A CN 201310591004A CN 103604143 A CN103604143 A CN 103604143A
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Abstract
The invention provides a double-frequency microwave oven door and a double-frequency microwave oven. The double-frequency microwave oven comprises a panel, a door body and a cover board, wherein the door body comprises a door frame and a choke structure which is arranged at the periphery of the door frame and is used for shielding micro-wave leakage, wherein the choke structure comprises a choke groove, a first choke tooth and a second choke tooth. By adopting the double-frequency microwave oven door provided by the invention, a microwave with one wavelength is shielded by matching of the first choke tooth and the choke groove under the condition that an attenuating material is not additionally arranged, and the microwave with another wavelength is shielded by matching of the second choke tooth and the choke groove. Thus, the microwaves with the two different wavelengths can be shielded by the choke structure, and the leakage of the microwaves is avoided, so that the damage of the microwaves to a human body is effectively prevented, the double-frequency microwave oven door is simple in structure, and easy to process and manufacture, and the manufacturing cost is not increased.
Description
Technical field
The present invention relates to a kind of household electrical appliance, in particular to a kind of bifrequency door of microwave oven and be provided with the bifrequency micro-wave oven of bifrequency door of microwave oven.
Background technology
Household microwave oven or industrial microwave firing equipment are all a kind of devices that utilizes magnetron that external electric energy is converted to microwave and interacted and heated by material and microwave field, heat food is surperficial and inner simultaneously, thereby realizes the fast cooking of food.Generally comprise the compositions such as magnetron, body of heater, power supply, control circuit and outer cover that produce microwave.Wherein oven body part mainly comprises for putting the furnace chamber of food, in the front of furnace chamber, fire door is installed.The effect of fire door is be convenient to pick and place food and observe the situation while cooking, fire door is installed in rotation on the left side of furnace chamber leading section by upper and lower door-hinge, when fire door is closed, with the resonator of furnace chamber formation cuboid, for food and the interactional space of microwave field.
Household microwave oven or industrial microwave oven firing equipment, general what adopt is that the microwave of 2.45GHz frequency heats food, adopts the microwave of single-frequency to heat food, easily there is heating inhomogeneous problem in this kind of mode of heating; Therefore, adopt sometimes two kinds of frequencies of 2.45GHz and 5.8GHz to work simultaneously, food is heated evenly, but, the fire door of this kind of micro-wave oven can only be for shielding the microwave of 2.45GHz frequency, and for the complete unrestraint effect of microwave of 5.8GHz frequency, therefore when be used as while having micro-wave oven that two kinds of frequencies work or microwave heating equipment simultaneously, can there is the safety problem that microwave leakage is large.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose a kind of simple in structure and can effectively shield the bifrequency door of microwave oven of two kinds of frequency microwaves.
Another object of the present invention is to propose a kind of bifrequency micro-wave oven with above-mentioned bifrequency door of microwave oven.
One aspect of the invention provides a kind of bifrequency door of microwave oven to comprise: panel; Door body, described door body is arranged in described panel, and described door body comprises doorframe and is arranged on the choke structure that described doorframe periphery is leaked for shield microwaves; And cover plate, described cover plate is arranged on described door body, and covers described choke structure; Described choke structure comprises choke groove and chokes tooth, the opening groove that described choke groove is surrounded by the first extension board, the second extension board and the 3rd extension board, described the first extension board be connected with described doorframe and to lateral buckling before doorframe, described the second extension board is connected with described the first extension board and extend to described doorframe outside, described the 3rd extension board is connected with described the second extension board and bend to described cover plate direction, described chokes tooth arranges in described choke groove from the opening of described choke groove;
Wherein, described chokes tooth comprises: the first chokes tooth, and described the first chokes tooth comprises the first intercepter, described the first intercepter is connected with described the 3rd extension board, and extends to the direction that approaches described the first extension board; With the second chokes tooth, described the second chokes tooth comprises the second intercepter and the 3rd intercepter, described the second intercepter is connected with described the 3rd extension board and extends to the direction that approaches described the first extension board, and described the 3rd intercepter is connected with described the second intercepter and extends to the direction that approaches described the second extension board; Described the first chokes tooth and described the second chokes tooth are arranged alternately in described choke groove.
Bifrequency door of microwave oven provided by the invention, in the situation that do not increase extra attenuating material, by the first chokes tooth and coordinating of choke groove, shield a kind of microwave of wavelength, by the cooperation of the second chokes tooth and choke groove, shield the microwave of another kind of wavelength, this choke structure can effectively shield the microwave of two kinds of different wave lengths, has avoided the leakage of microwave, thereby effectively prevent the harm of microwave to human body, and simple in structure, processing and manufacturing is easy, can not increase manufacturing cost.
In addition, the bifrequency door of microwave oven in the above embodiment of the present invention can also have following additional technical feature:
According to an embodiment provided by the invention, described the first extension board and width vertical with described doorframe is L1, described the second extension board and width vertical with described the first extension board is L2, described the 3rd extension board and width vertical with described the second extension board is L3, described the first intercepter and width vertical with described the 3rd extension board is L4, described the second intercepter also and width vertical with described the 3rd extension board is L5, and described the 3rd intercepter and width vertical with described the second intercepter is L6; Distance between the free end of described the first intercepter and described the first extension board is G3, and the distance between described the 3rd intercepter and described the first extension board is G2.
According to an embodiment provided by the invention, described G3 is of a size of 0.1 λ 2≤G3≤0.15 λ 2; Described G2 is of a size of 0.2G3≤G2≤0.4G3; Wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
According to an embodiment provided by the invention, the size relationship of described L3 and described L4 is 0.25 λ 2≤L3+L4≤0.35 λ 2; The size relationship of described L5, described L6 and L3 is 0.2 λ 1≤L3+L5+L6≤0.3 λ 1; Wherein, λ 1 is the wavelength of the second microwave in described bifrequency micro-wave oven.
According to an embodiment provided by the invention, the size relationship of described L1 and described L2 is 0.2 λ 2≤L1=L2≤0.25 λ 2.
According to an embodiment provided by the invention, described G3 is of a size of 0.15 λ 2≤G3≤0.25 λ 2; Described G2 is of a size of 1.5G3≤G2≤2G3; Wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
According to an embodiment provided by the invention, the size relationship of described L3 and described L4 is 0.2 λ 1≤L3+L4≤0.25 λ 1; The size relationship of described L5, described L6 and L3 is 0.7 λ 2≤L3+L5+L6≤0.8 λ 2; Wherein, λ 1 is the wavelength of the second microwave in described bifrequency micro-wave oven.
According to an embodiment provided by the invention, described L1 is of a size of 0.15 λ 1≤L1≤0.25 λ 1; Described L2 is of a size of 0.2 λ 2≤L2≤0.3 λ 2.
According to an embodiment provided by the invention, between adjacent described the first chokes tooth and described the second chokes tooth, be provided with otch, and described otch extends on described the 3rd extension board, the width of described otch is W2, and 0.1 λ 2≤W2≤0.15 λ 2, wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
According to an embodiment provided by the invention, the distance between adjacent described otch is W1, and 0.15 λ 2≤W1≤λ 2, and the degree of depth of described otch on described the 3rd extension board be h, and 0.4L3≤h≤0.6L3.
The bifrequency micro-wave oven that second aspect present invention provides comprises: body of heater, and described body of heater has the cavity of an end opening; And fire door, described fire door is the bifrequency door of microwave oven described in above-mentioned arbitrary embodiment, described fire door is articulated on described body of heater, the described opening of salable described cavity.
Bifrequency micro-wave oven provided by the invention, by bifrequency door of microwave oven is set, has been avoided the leakage of microwave, thereby has effectively prevented the harm of microwave to human body.
Additional aspect of the present invention and advantage will become in description part below obviously, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the decomposition texture schematic diagram of bifrequency door of microwave oven of the present invention;
Fig. 2 is the sectional perspective structural representation of an embodiment of the body of door shown in Fig. 1;
Fig. 3 is the cross-sectional schematic that in Fig. 2, the first chokes tooth coordinates with body of heater;
Fig. 4 is the cross-sectional schematic that in Fig. 2, the second chokes tooth coordinates with body of heater;
Fig. 5 is the sectional perspective structural representation of another embodiment of the body of door shown in Fig. 1;
Fig. 6 is the cross-sectional schematic that in Fig. 5, the first chokes tooth coordinates with body of heater;
Fig. 7 is the cross-sectional schematic that in Fig. 5, the second chokes tooth coordinates with body of heater;
Fig. 8 is the perspective view of bifrequency micro-wave oven one embodiment of the present invention.
Wherein, in Fig. 1 to Fig. 8, the corresponding relation between Reference numeral and component names is:
1 panel, 2 bodies, 3 doorframes, 4 choke grooves, 401 first extension boards, 402 second extension boards, 403 the 3rd extension boards, 5 first chokes teeth, 501 first intercepters, 6 second chokes teeth, 601 second intercepters, 602 the 3rd intercepters, 7 otch, 8 cover plates, 9 bodies of heater, 10 bifrequency door of microwave oven.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Below with reference to Fig. 1 to Fig. 7, describe according to the bifrequency door of microwave oven 10 described in the embodiment of the present invention, wherein, λ 2 is the wavelength of the first microwave in bifrequency micro-wave oven, and λ 1 is the wavelength of the second microwave in bifrequency micro-wave oven.
As shown in Figure 1, bifrequency door of microwave oven comprises: panel 1, door body 2 and cover plate 8; Door body 2 is arranged in panel 1, and door body 2 comprises doorframe 3 and is arranged on the choke structure that doorframe 3 peripheries are leaked for shield microwaves; Cover plate 8 is arranged on a body 2, and covers choke structure.
As shown in Fig. 2 to 7, choke structure comprises choke groove 4 and chokes tooth.
Particularly, the opening groove that choke groove 4 is surrounded by the first extension board 401, the second extension board 402 and the 3rd extension board 403, the first extension board 401 be connected with doorframe 3 and to the front lateral buckling of doorframe 3, the second extension board 402 be connected with the first extension board 401 and to doorframe 3 outsides, extend, the 3rd extension board 403 is connected with the second extension board 402 and bend to cover plate 8 directions, chokes tooth from the opening of choke groove 4 to the interior setting of choke groove 4;
Particularly, chokes tooth comprises: the first chokes tooth 5, the first chokes teeth 5 comprise that the first intercepter 501, the first intercepters 501 are connected with the 3rd extension board 403, and extends to the direction that approaches the first extension board 401; With
The second chokes tooth 6, the second chokes tooth 6 comprises the second intercepter 601 and the 3rd intercepter 602, the second intercepter 601 is connected with the 3rd extension board 403 and extends to the direction that approaches the first extension board 401, and the 3rd intercepter 602 is connected with the second intercepter 601 and extends to the direction that approaches the second extension board 402.
As shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the first extension board 401 and width vertical with doorframe 3 is L1, the second extension board 402 and width vertical with the first extension board 401 is L2, the 3rd extension board 403 and width vertical with the second extension board 402 is L3, the first intercepter 501 and width vertical with the 3rd extension board 403 is L4, the second intercepter 601 also and width vertical with the 3rd extension board 403 is L5, and the 3rd intercepter 602 and width vertical with the second intercepter 601 is L6; Distance between the free end of the first intercepter 501 and the first extension board 401 is G3, and the distance between the 3rd intercepter 602 and the first extension board 401 is G2.
In a specific embodiment of the present invention, as shown in Figure 3 and Figure 4, G3 is of a size of 0.1 λ 2≤G3≤0.15 λ 2; G2 is of a size of 0.2G3≤G2≤0.4G3; The size relationship of L3 and L4 is 0.25 λ 2≤L3+L4≤0.35 λ 2; The size relationship of L5, L6 and L3 is 0.2 λ 1≤L3+L5+L6≤0.3 λ 1, and the size relationship of L1 and L2 is 0.2 λ 2≤L1=L2≤0.25 λ 2.
Preferably, G2=3mm, G3=7mm, L3=8.5mm, L4=7.5mm, L5=11mm, L6=6.4mm, L1=L2=13mm.
Or as shown in Figure 6 and Figure 7, G3 is of a size of 0.15 λ 2≤G3≤0.25 λ 2; G2 is of a size of 1.5G3≤G2≤2G3; The size relationship of L3 and L4 is 0.2 λ 1≤L3+L4≤0.25 λ 1; The size relationship of L5, L6 and L3 is 0.7 λ 2≤L3+L5+L6≤0.8 λ 2; L1 is of a size of 0.15 λ 1≤L1≤0.25 λ 1; L2 is of a size of 0.2 λ 2≤L2≤0.3 λ 2.
Preferably, G2 is 9mm, G3=5mm, L3=16.5mm, L4=15.5mm, L5=10.5mm, L6=12mm, L1=21.5mm, L2=20mm.
Adopt the choke structure of above-mentioned parameter design to make the formation high impedance between the first intercepter 501 and body of heater 9 and between the second intercepter 601 and body of heater 9, on the path of microwave leakage, form and hinder, when doorframe 3 from door body 2 of the microwave of two kinds of frequencies and the gap G1 between body of heater 9 leak out, the microwave of two kinds of frequencies cannot leak out from the gap G1 between the first intercepter 501 and body of heater 9 and the gap G1 between the second intercepter 601 and body of heater 9, thereby wherein a kind of microwave of frequency is reflected after the wall of the first chokes tooth 5 and choke groove 4, the microwave of another kind of frequency is reflected after the wall of the second chokes tooth 6 and choke groove 4, the microwave of two kinds of frequencies is by the first chokes tooth 5, the choke structure that the second chokes tooth 6 and choke groove 4 form stops.
In one embodiment of the invention, as shown in Figure 2 and Figure 5, between adjacent the first chokes tooth 5 and the second chokes tooth 6, be provided with otch 7, and otch 7 extends on the 3rd extension board 403, and the width of otch 7 is W2, and 0.1 λ 2≤W2≤0.15 λ 2, preferably, W2 is 4mm.
In one embodiment of the invention, as shown in Figure 5, the distance that adjacent cut is 7 is W1, and 0.15 λ 2≤W1≤λ 2, and preferably, W1 is 8mm, and the degree of depth that otch 7 is positioned at the 3rd extension board 403 is h, and 0.4L3≤h≤0.6L3, and preferably, h is 0.5L3.The setting of otch can realize choke structure the microwave in wider frequency range is had to good shield effectiveness.
According to Fig. 8, the bifrequency micro-wave oven providing according to the embodiment of the present invention is described below.
As shown in Figure 8, bifrequency micro-wave oven comprises: body of heater 9, and body of heater 9 has the cavity of an end opening; And fire door, the bifrequency door of microwave oven 10 that fire door provides for above-described embodiment, fire door is articulated on body of heater 9, the opening of salable cavity.
In sum, bifrequency door of microwave oven 10 provided by the invention, by the periphery at door body 2, be provided with choke structure, make the surrounding of a body 2 present high impedance, when doorframe 3 from door body 2 of the microwave of two kinds of frequencies and the gap G1 between body of heater 9 leak out, wherein a kind of microwave is reflected after the wall of the first chokes tooth 5 and choke groove 4, another kind of microwave is reflected after the wall of the second chokes tooth 6 and choke groove 4, thereby effectively avoided the microwave leakage of two kinds of frequencies in bifrequency micro-wave oven, and this kind of design makes not need strict contact mechanically between doorframe 3 and body of heater 9, thereby greatly reduce the requirement to machining accuracy, even if use for a long time shield effectiveness also can not decline.
In the present invention, term " first ", " second ", " the 3rd " be the object for describing only, and can not be interpreted as indication or hint relative importance.The terms such as term " installation ", " connection " all should be interpreted broadly, and for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or connect integratedly.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In description of the invention, it will be appreciated that, orientation or the position relationship of the indication such as term 'fornt', 'back' are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than indicate or imply that the device of indication or unit must have specific direction, with specific orientation, construct and operation, therefore, can not be interpreted as limitation of the present invention.
In the description of this description, the description of term " embodiment ", " some embodiment ", " specific embodiment " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a bifrequency door of microwave oven, comprising:
Panel;
Door body, described door body is arranged in described panel, and described door body comprises doorframe and is arranged on the choke structure that described doorframe periphery is leaked for shield microwaves; With
Cover plate, described cover plate is arranged on described door body, and covers described choke structure;
Described choke structure comprises choke groove and chokes tooth, the opening groove that described choke groove is surrounded by the first extension board, the second extension board and the 3rd extension board, described the first extension board be connected with described doorframe and to lateral buckling before doorframe, described the second extension board is connected with described the first extension board and extend to described doorframe outside, described the 3rd extension board is connected with described the second extension board and bend to described cover plate direction, described chokes tooth arranges in described choke groove from the opening of described choke groove;
It is characterized in that, described chokes tooth comprises:
The first chokes tooth, described the first chokes tooth comprises the first intercepter, described the first intercepter is connected with described the 3rd extension board, and extends to the direction that approaches described the first extension board; With
The second chokes tooth, described the second chokes tooth comprises the second intercepter and the 3rd intercepter, described the second intercepter is connected with described the 3rd extension board and extends to the direction that approaches described the first extension board, and described the 3rd intercepter is connected with described the second intercepter and extends to the direction that approaches described the second extension board;
Described the first chokes tooth and described the second chokes tooth are arranged alternately in described choke groove.
2. bifrequency door of microwave oven according to claim 1, is characterized in that,
Described the first extension board and width vertical with described doorframe is L1, described the second extension board and width vertical with described the first extension board is L2, described the 3rd extension board and width vertical with described the second extension board is L3, described the first intercepter and width vertical with described the 3rd extension board is L4, described the second intercepter also and width vertical with described the 3rd extension board is L5, and described the 3rd intercepter and width vertical with described the second intercepter is L6;
Distance between the free end of described the first intercepter and described the first extension board is G3, and the distance between described the 3rd intercepter and described the first extension board is G2.
3. bifrequency door of microwave oven according to claim 2, is characterized in that, described G3 is of a size of 0.1 λ 2≤G3≤0.15 λ 2; Described G2 is of a size of 0.2G3≤G2≤0.4G3;
Wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
4. bifrequency door of microwave oven according to claim 3, is characterized in that, the size relationship of described L3 and described L4 is 0.25 λ 2≤L3+L4≤0.35 λ 2; The size relationship of described L5, described L6 and L3 is 0.2 λ 1≤L3+L5+L6≤0.3 λ 1;
Wherein, λ 1 is the wavelength of the second microwave in described bifrequency micro-wave oven.
5. bifrequency door of microwave oven according to claim 4, is characterized in that, the size relationship of described L1 and described L2 is 0.2 λ 2≤L1=L2≤0.25 λ 2.
6. bifrequency door of microwave oven according to claim 2, is characterized in that, described G3 is of a size of 0.15 λ 2≤G3≤0.25 λ 2; Described G2 is of a size of 1.5G3≤G2≤2G3;
Wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
7. bifrequency door of microwave oven according to claim 6, is characterized in that, the size relationship of described L3 and described L4 is 0.2 λ 1≤L3+L4≤0.25 λ 1; The size relationship of described L5, described L6 and L3 is 0.7 λ 2≤L3+L5+L6≤0.8 λ 2;
Wherein, λ 1 is the wavelength of the second microwave in described bifrequency micro-wave oven.
8. bifrequency door of microwave oven according to claim 7, is characterized in that,
Described L1 is of a size of 0.15 λ 1≤L1≤0.25 λ 1; Described L2 is of a size of 0.2 λ 2≤L2≤0.3 λ 2.
9. according to the bifrequency door of microwave oven described in any one in claim 2 to 8, it is characterized in that,
Between adjacent described the first chokes tooth and described the second chokes tooth, be provided with otch, and described otch extends on described the 3rd extension board, and the width of described otch is W2, and 0.1 λ 2≤W2≤0.15 λ 2, wherein, λ 2 is the wavelength of the first microwave in described bifrequency micro-wave oven.
10. bifrequency door of microwave oven according to claim 9, is characterized in that, the distance between adjacent described otch is W1, and 0.15 λ 2≤W1≤λ 2, and the degree of depth of described otch on described the 3rd extension board be h, and 0.4L3≤h≤0.6L3.
11. 1 kinds of bifrequency micro-wave ovens, is characterized in that, comprising:
Body of heater, described body of heater has the cavity of an end opening; With
Fire door, described fire door is bifrequency door of microwave oven described in any one in claim 1 to 10, described fire door is articulated on described body of heater, the described opening of salable described cavity.
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| CN107559898A (en) * | 2017-09-19 | 2018-01-09 | 广东美的厨房电器制造有限公司 | Heating device |
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| CN114688831A (en) * | 2022-02-08 | 2022-07-01 | 宁夏共享机床辅机有限公司 | Furnace door structure of furnace body |
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| CN107559898A (en) * | 2017-09-19 | 2018-01-09 | 广东美的厨房电器制造有限公司 | Heating device |
| CN109882896A (en) * | 2019-02-01 | 2019-06-14 | 上海点为智能科技有限责任公司 | Electromagnetic wave screening structure and the device for using the structure |
| CN114688831A (en) * | 2022-02-08 | 2022-07-01 | 宁夏共享机床辅机有限公司 | Furnace door structure of furnace body |
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|---|---|
| CN103604143B (en) | 2015-10-14 |
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