CN103604143B - Bifrequency door of microwave oven and bifrequency micro-wave oven - Google Patents
Bifrequency door of microwave oven and bifrequency micro-wave oven Download PDFInfo
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- CN103604143B CN103604143B CN201310591004.7A CN201310591004A CN103604143B CN 103604143 B CN103604143 B CN 103604143B CN 201310591004 A CN201310591004 A CN 201310591004A CN 103604143 B CN103604143 B CN 103604143B
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Abstract
The invention provides a kind of bifrequency door of microwave oven and bifrequency micro-wave oven, described bifrequency micro-wave oven comprises: panel, door body and cover plate, described door body comprises doorframe and is arranged on the choke structure leaked for shield microwaves described doorframe periphery, wherein, described choke structure comprises choke groove, the first chokes tooth and the second chokes tooth.Bifrequency door of microwave oven provided by the invention, when not increasing extra attenuating material, the microwave shielding a kind of wavelength is coordinated by the first chokes tooth and choke groove, shielded the microwave of another kind of wavelength by the cooperation of the second chokes tooth and choke groove, this choke structure can shield the microwave of two kinds of different wave lengths, avoids the leakage of microwave, thus effectively prevent microwave to the harm of human body, and structure is simple, processing and manufacturing is easy, can not increase manufacturing cost.
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 the bifrequency micro-wave oven being provided with bifrequency door of microwave oven.
Background technology
Household microwave oven or industrial microwave firing equipment are all a kind ofly utilize magnetron to convert external electric energy to microwave and the device being interacted by material and microwave field and heated, can the simultaneously surface of heat food and inside, thus realize the fast cooking of food.Generally comprise the compositions such as magnetron, body of heater, power supply, control circuit and the outer cover producing microwave.Wherein oven body part mainly comprises the furnace chamber for putting food, is provided with fire door in the front of furnace chamber.Situation when picking and placeing food and observe the cooking is convenient in the effect of fire door, fire door is installed in rotation on the left side of furnace chamber leading section by upper and lower door-hinge, when fire door closes, form the resonator of cuboid with furnace chamber, for food and the interactional space of microwave field.
Household microwave oven or industrial microwave oven firing equipment, general adopt be the microwave of 2.45GHz frequency to heat foods, namely adopt the microwave of single-frequency to heat foods, this kind of mode of heating easily occurs heating uneven problem; Therefore, adopt 2.45GHz and 5.8GHz two kinds of frequencies to work sometimes simultaneously, food is heated evenly, but, the fire door of this kind of micro-wave oven can only be used for the microwave shielding 2.45GHz frequency, and for the complete unrestraint effect of microwave of 5.8GHz frequency, therefore when as the micro-wave oven having two kinds of frequencies to work or microwave heating equipment simultaneously, the safety problem that microwave leakage is large can be there is.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, to be to propose a kind of structure simple and effectively can shield the bifrequency door of microwave oven of two kinds of frequency microwave for one object of the present invention.
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 and comprises: panel; Men Ti, described door body is arranged in described panel, and described door body comprises doorframe and is arranged on the choke structure leaked for shield microwaves described doorframe periphery; 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 first extension board be connected with described doorframe and bend on front side of doorframe, described second extension board be connected with described first extension board and extend outside described doorframe, described 3rd extension board is connected with described second extension board and bends to described cover plate direction, described chokes tooth is arranged in described choke groove from the opening of described choke groove;
Wherein, described chokes tooth comprises: the first chokes tooth, and described first chokes tooth comprises the first intercepter, and described first intercepter is connected with described 3rd extension board, and extends to the direction close to described first extension board; With the second chokes tooth, described second chokes tooth comprises the second intercepter and the 3rd intercepter, described second intercepter is connected with described 3rd extension board and extends to the direction close to described first extension board, and described 3rd intercepter is connected with described second intercepter and extends to the direction close to described second extension board; Described first chokes tooth and described second chokes tooth are disposed alternately in described choke groove.
Bifrequency door of microwave oven provided by the invention, when not increasing extra attenuating material, the microwave shielding a kind of wavelength is coordinated by the first chokes tooth and choke groove, shielded the microwave of another kind of wavelength by the cooperation of the second chokes tooth and choke groove, this choke structure effectively can shield the microwave of two kinds of different wave lengths, avoids the leakage of microwave, thus effectively prevent microwave to the harm of human body, and structure is simple, 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 first extension board is vertical with described doorframe and width is L1, described second extension board is vertical with described first extension board and width is L2, described 3rd extension board is vertical with described second extension board and width is L3, described first intercepter is vertical with described 3rd extension board and width is L4, described second intercepter is also vertical with described 3rd extension board and width is L5, and described 3rd intercepter is vertical with described second intercepter and width is L6; Distance between the free end of described first intercepter and described first extension board is G3, and the distance between described 3rd intercepter and described 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, otch is provided with between adjacent described first chokes tooth and described second chokes tooth, and described otch extends on described 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 3rd extension board is 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 one end open; And fire door, described fire door is articulated on described body of heater for the bifrequency door of microwave oven described in above-mentioned any embodiment, described fire door, the described opening of salable described cavity.
Bifrequency micro-wave oven provided by the invention, by arranging bifrequency door of microwave oven, avoids the leakage of microwave, thus effectively prevents microwave to the harm of human body.
Additional aspect of the present invention and advantage become obvious by description part below, or are recognized by practice of the present invention.
In description of the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term "front", "rear" are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or unit must have specific direction, with specific azimuth configuration and operation, therefore, limitation of the present invention can not be interpreted as.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner 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 amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to 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, the corresponding relation in Fig. 1 to Fig. 8 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.
Detailed description of the invention
In order to more clearly 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, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail 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 by the restriction of following public specific embodiment.
Describe the bifrequency door of microwave oven 10 according to the embodiment of the present invention referring to Fig. 1 to Fig. 7, 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 leaked for shield microwaves doorframe 3 periphery; 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.
Specifically, the opening groove that choke groove 4 is surrounded by the first extension board 401, second extension board 402 and the 3rd extension board 403, first extension board 401 be connected with doorframe 3 and bend on front side of doorframe 3, the second extension board 402 be connected with the first extension board 401 and extend outside doorframe 3, the 3rd extension board 403 is connected with the second extension board 402 and bends to cover plate 8 direction, chokes tooth is arranged in choke groove 4 from the opening of choke groove 4;
Specifically, chokes tooth comprises: the first chokes tooth 5, first chokes tooth 5 comprises the first intercepter 501, first intercepter 501 and is connected with the 3rd extension board 403, and extends to the direction close to the first extension board 401; With
Second chokes tooth 6, second chokes tooth 6 comprises the second intercepter 601 and the 3rd intercepter 602, second intercepter 601 is connected with the 3rd extension board 403 and extends to the direction close to the first extension board 401, and the 3rd intercepter 602 is connected with the second intercepter 601 and extends to the direction close to the second extension board 402.
As shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, first extension board 401 is vertical with doorframe 3 and width is L1, second extension board 402 is vertical with the first extension board 401 and width is L2,3rd extension board 403 is vertical with the second extension board 402 and width is L3, first intercepter 501 is vertical with the 3rd extension board 403 and width is L4, second intercepter 601 is also vertical with the 3rd extension board 403 and width is L5, and the 3rd intercepter 602 is vertical with the second intercepter 601 and width 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 one particular 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 the size relationship of 0.2 λ 1≤L3+L5+L6≤0.3 λ 1, 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.
The choke structure adopting above-mentioned parameter to design makes 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, namely formed on the path of microwave leakage and hinder, when the microwave of two kinds of frequencies leaks out from the doorframe 3 door body 2 and the gap G1 between body of heater 9, the microwave of two kinds of frequencies cannot leak out from the gap G1 between the first intercepter 501 and the body of heater 9 and gap G1 between the second intercepter 601 and body of heater 9, thus 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, namely the microwave of two kinds of frequencies is by the first chokes tooth 5, the choke structure that second chokes tooth 6 and choke groove 4 are formed stops.
In one embodiment of the invention, as shown in Figure 2 and Figure 5, otch 7 is provided with between adjacent first chokes tooth 5 and the second chokes tooth 6, and otch 7 extends on the 3rd extension board 403, 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 between adjacent cut 7 is W1, and 0.15 λ 2≤W1≤λ 2, 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, preferably, h is 0.5L3.The setting of otch can realize choke structure and have good shield effectiveness to the microwave in wider frequency range.
The bifrequency micro-wave oven provided according to the embodiment of the present invention is described according to Fig. 8 below.
As shown in Figure 8, bifrequency micro-wave oven comprises: body of heater 9, and body of heater 9 has the cavity of one end open; 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 being provided with choke structure in the periphery of door body 2, the surrounding of a body 2 is made to present high impedance, when the microwave of two kinds of frequencies leaks out from the doorframe 3 door body 2 and the gap G1 between body of heater 9, 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, thus effectively prevent the microwave leakage of two kinds of frequencies in bifrequency micro-wave oven, and this kind of design to make not need between doorframe 3 with body of heater 9 mechanically strict contacts, thus the requirement greatly reduced machining accuracy, even if Long-Time Service shield effectiveness also can not decline.
In the present invention, term " first ", " second ", " the 3rd " object only for describing, and instruction or hint relative importance can not be interpreted as.The term such as term " installation ", " connection " all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Claims (11)
1. a bifrequency door of microwave oven, comprising:
Panel;
Men Ti, described door body is arranged in described panel, and described door body comprises doorframe and is arranged on the choke structure leaked for shield microwaves described doorframe periphery; 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 first extension board be connected with described doorframe and bend on front side of doorframe, described second extension board be connected with described first extension board and extend outside described doorframe, described 3rd extension board is connected with described second extension board and bends to described cover plate direction, described chokes tooth is arranged in described choke groove from the opening of described choke groove;
It is characterized in that, described chokes tooth comprises:
First chokes tooth, described first chokes tooth comprises the first intercepter, and described first intercepter is connected with described 3rd extension board, and extends to the direction close to described first extension board; With
Second chokes tooth, described second chokes tooth comprises the second intercepter and the 3rd intercepter, described second intercepter is connected with described 3rd extension board and extends to the direction close to described first extension board, and described 3rd intercepter is connected with described second intercepter and extends to the direction close to described second extension board;
Described first chokes tooth and described second chokes tooth are disposed alternately in described choke groove.
2. bifrequency door of microwave oven according to claim 1, is characterized in that,
Described first extension board is vertical with described doorframe and width is L1, described second extension board is vertical with described first extension board and width is L2, described 3rd extension board is vertical with described second extension board and width is L3, described first intercepter is vertical with described 3rd extension board and width is L4, described second intercepter is also vertical with described 3rd extension board and width is L5, and described 3rd intercepter is vertical with described second intercepter and width is L6;
Distance between the free end of described first intercepter and described first extension board is G3, and the distance between described 3rd intercepter and described 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. the bifrequency door of microwave oven according to any one of claim 2 to 8, is characterized in that,
Otch is provided with between adjacent described first chokes tooth and described second chokes tooth, and described otch extends on described 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.
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 3rd extension board is 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 one end open; With
Fire door, described fire door is bifrequency door of microwave oven according to any one of claim 1 to 10, and described fire door is articulated on described body of heater, the described opening of salable described cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310591004.7A CN103604143B (en) | 2013-11-20 | 2013-11-20 | Bifrequency door of microwave oven and bifrequency micro-wave oven |
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| CN201310591004.7A CN103604143B (en) | 2013-11-20 | 2013-11-20 | Bifrequency door of microwave oven and bifrequency micro-wave oven |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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