CN204006180U - Micro-wave oven and driver thereof, waveguide - Google Patents
Micro-wave oven and driver thereof, waveguide Download PDFInfo
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- CN204006180U CN204006180U CN201420422211.XU CN201420422211U CN204006180U CN 204006180 U CN204006180 U CN 204006180U CN 201420422211 U CN201420422211 U CN 201420422211U CN 204006180 U CN204006180 U CN 204006180U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 7
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- 230000005540 biological transmission Effects 0.000 description 13
- 239000004065 semiconductor Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 238000012512 characterization method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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Abstract
The utility model discloses a kind of micro-wave oven and driver thereof, waveguide.Described micro-wave oven comprises: body of heater, has heating chamber in described body of heater; Microwave source; And driver, described driver comprises: waveguide, in described waveguide, there is the waveguide cavity being communicated with described heating chamber, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end; And coaxial connector, described coaxial connector comprises outer conductor and is positioned at the inner wire of inner side of described outer conductor, and described inner wire is through the outer surface of described waveguide and extend in described waveguide cavity, and wherein said coaxial connector is connected with described microwave source.Have according to the micro-wave oven of the utility model embodiment that heating effect is good, efficiency of heating surface advantages of higher.
Description
Technical field
The utility model relates to a kind of waveguide, also relates to a kind of driver and micro-wave oven with described waveguide.
Background technology
Micro-wave oven is that micro-wave oven comprises the parts such as microwave source, cavity, fire door for the common tool of heating or culinary art.Wherein, microwave source is to produce the core component of microwave, and the microwave that microwave source produces needs the driver could be by microwave transmission to cavity, realizes food heating.
The antenna of the driver of existing micro-wave oven or probe insert in rectangular-shaped waveguide cavity.In semiconductor microwave oven, semiconductor microactuator wave source is output as coaxial output especially.The microwave conversion of existing micro-wave oven need to turn waveguide again from coaxial relay antenna or probe, and conversion times is more like this, and the loss of microwave energy just can be more.Meanwhile, there is the defect that reflection power is large, efficiency of transmission is low in rectangular-shaped waveguide cavity.
Utility model content
The utility model is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, an object of the present utility model is to propose a kind of micro-wave oven with advantages such as heating effect are good, the efficiency of heating surface is high, microwave energy loss is little.
Another object of the present utility model is to propose a kind of driver.
Another object of the present utility model is to propose a kind of waveguide.
Comprise according to first aspect micro-wave oven of the present utility model: body of heater, has heating chamber in described body of heater; Microwave source; And driver, described driver comprises: waveguide, in described waveguide, there is the waveguide cavity being communicated with described heating chamber, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end; And coaxial connector, described coaxial connector comprises outer conductor and is positioned at the inner wire of inner side of described outer conductor, and described inner wire is through the outer surface of described waveguide and extend in described waveguide cavity, and wherein said coaxial connector is connected with described microwave source.
Increase to the second end from first end by the cross-sectional area that makes waveguide cavity according to waveguide of the present utility model, thereby can form a trumpet-shaped antenna, can improve thus for example, directionality in first direction and second direction (horizontal direction and vertical direction) of described waveguide.Particularly, suppose that the central shaft of antenna is at z direction of principal axis, the namely maximum direction of the radiant power of antenna, if after an angle of rotation, the radiant power of antenna is reduced to half-power level, deflection angle theta so is now the half of main lobe width.Directionality is better, and deflection angle theta is just less, the main lobe width that 2 θ are antenna, and this angle is less, and directionality is just better.
And the standing-wave ratio of existing waveguide is greater than 1.5, in the time that standing-wave ratio is 1.5, there is 4% reflection power to be reflected back microwave source.Approach 1 according to the standing-wave ratio of waveguide of the present utility model, almost do not have reflection power to be reflected back microwave source.
In addition, according to waveguide of the present utility model by coaxial connector is set, thereby can reduce microwave conversion times, can greatly reduce thus the loss of microwave energy.
There is the advantages such as heating effect is good, the efficiency of heating surface is high, microwave energy loss is little according to micro-wave oven of the present utility model.
In addition, can also there is following additional technical characterictic according to the above-mentioned micro-wave oven of the utility model:
The cross-sectional area of described waveguide cavity increases to described the second end gradually from described first end.Can further reduce thus the reflection power of described waveguide and described driver, further expand the direction of the microwave of described waveguide and described driver, further improve the microwave transmission efficiency of described waveguide and described driver.
Described waveguide cavity is that the diapire of wedge shape or described waveguide cavity is formed with at least one stage portion.Can further reduce thus the reflection power of described waveguide and described driver, further expand the direction of the microwave of described waveguide and described driver, further improve the microwave transmission efficiency of described waveguide and described driver.
Described waveguide is rectangular-shaped, and the diapire of the described waveguide cavity of wedge shape is positioned in the diagonal plane of described waveguide.Can make thus the structure of described waveguide and described driver more reasonable.
The distance of the center line of described inner wire and the first side wall of described waveguide cavity equals the distance of the center line of described inner wire and the second sidewall of described waveguide cavity, and wherein said the first side wall is relative on the width of described waveguide cavity with described the second sidewall.Can further reduce thus the reflection power of described waveguide and described driver, further expand the direction of the microwave of described waveguide and described driver, further improve the microwave transmission efficiency of described waveguide and described driver.
The distance of the center line of described inner wire and the first end of described waveguide cavity is the odd-multiple of 1/4th waveguide wavelengths.Can make thus the structure of described waveguide and described driver more reasonable.
Described coaxial connector is connected with described microwave source by coaxial cable or radio frequency connector.
Described outer conductor is connected with the outer surface of described waveguide, and described inner wire is connected with the diapire of described waveguide cavity.Can make thus the structure of described waveguide and described driver more reasonable, and then can make the structure of described micro-wave oven more reasonable.
According to second aspect of the present utility model, a kind of driver is proposed, described driver comprises: waveguide, in described waveguide, there is waveguide cavity, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end; And coaxial connector, described coaxial connector comprises outer conductor and is positioned at the inner wire of inner side of described outer conductor, described inner wire is through the outer surface of described waveguide and stretch in described waveguide cavity.
There is the advantages such as reflection power is less, the direction of microwave is wider, microwave transmission efficiency is higher, microwave energy loss is little according to driver of the present utility model.
According to the third aspect of the present utility model, a kind of waveguide is proposed, in described waveguide, there is waveguide cavity, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end.
According to waveguide of the present utility model have that reflection power is less, the direction of microwave is wider, more advantages of higher of microwave transmission efficiency.
Brief description of the drawings
Fig. 1 is according to the structural representation of the driver of an embodiment of the present utility model;
Fig. 2 is according to the structural representation of the driver of an embodiment of the present utility model;
Fig. 3 is according to the structural representation of the driver of the utility model embodiment;
Fig. 4 is the partial structurtes schematic diagram according to the micro-wave oven of the utility model embodiment;
Fig. 5 is according to the structural representation of the driver of another embodiment of the present utility model.
Reference numeral:
Micro-wave oven 10, microwave source 101,
Driver 102, waveguide 1021, waveguide cavity 10211, first end 102111, the second end 102112, the first side wall 102113, diapire 102114, stage portion 102115, upper surface 10212, opening 10213,
Coaxial connector 1022, outer conductor 10221, inner wire 10222, coaxial cable 1023
Detailed description of the invention
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Describe according to the micro-wave oven 10 of the utility model embodiment below with reference to Fig. 1-Fig. 5.As Figure 1-Figure 5, comprise body of heater (not shown), microwave source 101 and driver 102 according to the micro-wave oven 10 of the utility model embodiment, in described body of heater, there is heating chamber.
Driver 102 comprises waveguide 1021 and coaxial connector 1022.In waveguide 1021, there is the waveguide cavity 10211 being communicated with described heating chamber, the first end 102111 of waveguide cavity 10211 seals and the second end 102112 of waveguide cavity 10211 opens wide, the cross-sectional area of waveguide cavity 10211 increases to the second end 102112 from first end 102111, and wherein first end 102111 is relative with the second end 102112.Coaxial connector 1022 comprises outer conductor 10221 and is positioned at the inner wire 10222 of the inner side of outer conductor 10221, and inner wire 10222 is through the outer surface of waveguide 1021 and extend in waveguide cavity 10211.Wherein, coaxial connector 1022 is connected with microwave source 101.
Waveguide has the effect of microwave radiation, can utilize " directionality " to characterize the ability of waveguide antenna microwave." directionality " of waveguide determined together by many parameters such as directional diagram, direction coefficient, antenna gains conventionally.The directionality when microwave radiation of existing waveguide is very poor.
Increase to the second end 102112 from first end 102111 by the cross-sectional area that makes waveguide cavity 10211 according to the waveguide 1021 of the utility model embodiment, thereby can form a trumpet-shaped antenna, can improve thus for example, directionality in first direction and second direction (horizontal direction and vertical direction) of waveguide 1021.Particularly, suppose that the central shaft of antenna is at z direction of principal axis, the namely maximum direction of the radiant power of antenna, if after an angle of rotation, the radiant power of antenna is reduced to half-power level, deflection angle theta so is now the half of main lobe width.Directionality is better, and deflection angle theta is just less, the main lobe width that 2 θ are antenna, and this angle is less, and directionality is just better.
And the standing-wave ratio of existing waveguide is greater than 1.5, in the time that standing-wave ratio is 1.5, there is 4% reflection power to be reflected back microwave source.Approach 1 according to the standing-wave ratio of the waveguide 1021 of the utility model embodiment, almost do not have reflection power to be reflected back microwave source 101.
In addition, according to the waveguide 1021 of the utility model embodiment by coaxial connector 1022 is set, thereby can reduce microwave conversion times, can greatly reduce thus the loss of microwave energy.
Therefore, according to the waveguide 1021 of the utility model embodiment have that reflection power is less, the direction of microwave is wider, more advantages of higher of microwave transmission efficiency.
There is the advantages such as reflection power is less, the direction of microwave is wider, microwave transmission efficiency is higher, microwave energy loss is little according to the driver 102 of the utility model embodiment.
There is the advantages such as heating effect is good, the efficiency of heating surface is high, microwave energy loss is little according to the micro-wave oven 10 of the utility model embodiment.
Advantageously, the cross-sectional area of waveguide cavity 10211 increases to the second end 102112 gradually from first end 102111.Can further reduce thus the reflection power of waveguide 1021 and driver 102, further expand the direction of the microwave of waveguide 1021 and driver 102, further improve the microwave transmission efficiency of waveguide 1021 and driver 102.
As shown in Figure 2, in an embodiment of the present utility model, waveguide cavity 10211 is wedge shape.Can further reduce thus the reflection power of waveguide 1021 and driver 102, further expand the direction of the microwave of waveguide 1021 and driver 102, further improve the microwave transmission efficiency of waveguide 1021 and driver 102.
In another embodiment of the present utility model, as shown in Figure 5, the diapire 102114 of waveguide cavity 10211 is formed with at least one stage portion 102115.Can further reduce thus the reflection power of waveguide 1021 and driver 102, further expand the direction of the microwave of waveguide 1021 and driver 102, further improve the microwave transmission efficiency of waveguide 1021 and driver 102.
As shown in Figure 5, particularly, the diapire 102114 of waveguide cavity 10211 is formed with three stage portion 102115.
In a concrete example of the present utility model, as Figure 1-Figure 4, waveguide 1021 is rectangular-shaped, and the diapire 102114 of the waveguide cavity 10211 of wedge shape is positioned in the diagonal plane of waveguide 1021.That is to say, the cross-sectional area of the first end 102111 of the waveguide cavity 10211 of wedge shape equals zero.Can make thus the structure of waveguide 1021 and driver 102 more reasonable.
As depicted in figs. 1 and 2, particularly, the cross section of waveguide cavity 10211 has broadside a and narrow limit b, and broadside a and narrow limit b expand to the second end 102112 from first end 102111 simultaneously, to form a trumpet-shaped antenna.The directionality of waveguide 1021 changes along with the degree of broadside a and narrow limit b expansion, and it is larger that broadside a and narrow limit b expand, and waveguide 1021 directionality in (horizontal direction and vertical direction) on both direction is just better.The length of described broadside a be 60mm to 100mm, the length of narrow limit b is that 30mm is to 50mm.
Microwave source 101 can be semiconductor microactuator wave source, and driver 102 (wedge shape driver) is for realizing the conversion of semiconductor microactuator wave source to cavity (described heating chamber) microwave.Waveguide cavity 10211 can be wedge shape, and the size of waveguide cavity 10211 smoothly increases, and is transitioned into gradually waveguide dimensions.
When being applied on semiconductor microwave oven, easily damages by existing driver semiconductor microactuator wave source.And can not damage semiconductor microactuator wave source while being applied on semiconductor microwave oven according to the driver 102 of the utility model embodiment, thereby can extend the service life of micro-wave oven 10.
As shown in Figure 2, in an embodiment of the present utility model, inner wire 10222 can be connected with the diapire of waveguide cavity 10,211 102114.Can make thus the structure of waveguide 1021 and driver 102 more reasonable, and then can make the structure of micro-wave oven 10 more reasonable.
Advantageously, in waveguide 1021, can be provided with opening 10213, inner wire 10222 can extend into (inner wire 10222 is spaced apart with the wall of opening 10213) in waveguide cavity 10211 by opening 10213.In other words, the roof of waveguide cavity 10211 is provided with opening 10213, and waveguide cavity 10211 can be in communication with the outside by opening 10213.Wherein, above-below direction is as shown in the arrow A in Fig. 2.
Outer conductor 10221 for example, is connected with the outer surface (upper surface 10212) of waveguide 1021.Particularly, outer conductor 10221 can directly be connected with the outer surface of waveguide 1021, and for example outer conductor 10221 can be welded on the outer surface of waveguide 1021.In addition, outer conductor 10221 can also be arranged on the outer surface of waveguide 1021 by ring flange.
In examples more of the present utility model, as shown in Figure 3, the distance H 1 of the first side wall 102113 of the center line of inner wire 10222 and waveguide cavity 10211 equals the distance H 2 of the center line of inner wire 10222 and the second sidewall of waveguide cavity 10211.Wherein, the first side wall 102113 is relative on the width of waveguide cavity 10211 with the second sidewall.Can further reduce thus the reflection power of waveguide 1021 and driver 102, further expand the direction of the microwave of waveguide 1021 and driver 102, further improve the microwave transmission efficiency of waveguide 1021 and driver 102.
Wherein, the width of waveguide cavity 10211 can be identical with the bearing of trend of broadside a.
Advantageously, as shown in Figure 3, the distance H 3 of the first end of the center line of inner wire 10222 and waveguide cavity 10211 is the odd-multiple of 1/4th waveguide wavelengths.Can make thus the structure of waveguide 1021 and driver 102 more reasonable.Particularly, the distance H 3 of the first end of the center line of inner wire 10222 and waveguide cavity 10211 can be 1/4th waveguide wavelengths, 3/4ths waveguide wavelengths, one and one-quarter waveguide wavelength etc.
In a concrete example of the present utility model, waveguide cavity 10211 is that the diapire 102114 of wedge shape or waveguide cavity 10211 is formed with at least one stage portion 102115.Wherein, the distance H 1 of the first side wall 102113 of the center line of inner wire 10222 and waveguide cavity 10211 equals the distance H 2 of the center line of inner wire 10222 and the second sidewall of waveguide cavity 10211, and the distance H 3 of the first end of the center line of inner wire 10222 and waveguide cavity 10211 is the odd-multiple of 1/4th waveguide wavelengths.
Coaxial connector 1022 can directly be connected with microwave source 101.As shown in Figure 5, coaxial connector 1022 can be connected with microwave source 101 by coaxial cable 1023 or radio frequency connector.The openend (the second end 102112) of waveguide cavity 10211 is communicated with the heating chamber of described body of heater, to realize the feed-in of microwave.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, at least one this feature can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " multiple " is at least two, for example two, and three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this description or example and different embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, amendment, replacement and modification.
Claims (10)
1. a micro-wave oven, is characterized in that, comprising:
Body of heater, has heating chamber in described body of heater;
Microwave source; And
Driver, described driver comprises:
Waveguide, in described waveguide, there is the waveguide cavity being communicated with described heating chamber, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, and the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end; With
Coaxial connector, described coaxial connector comprises outer conductor and is positioned at the inner wire of inner side of described outer conductor, and described inner wire is through the outer surface of described waveguide and extend in described waveguide cavity, and wherein said coaxial connector is connected with described microwave source.
2. micro-wave oven according to claim 1, is characterized in that, the cross-sectional area of described waveguide cavity increases to described the second end gradually from described first end.
3. micro-wave oven according to claim 2, is characterized in that, described waveguide cavity is that the diapire of wedge shape or described waveguide cavity is formed with at least one stage portion.
4. micro-wave oven according to claim 3, is characterized in that, described waveguide is rectangular-shaped, and the diapire of the described waveguide cavity of wedge shape is positioned in the diagonal plane of described waveguide.
5. micro-wave oven according to claim 1, it is characterized in that, the distance of the center line of described inner wire and the first side wall of described waveguide cavity equals the distance of the center line of described inner wire and the second sidewall of described waveguide cavity, and wherein said the first side wall is relative on the width of described waveguide cavity with described the second sidewall.
6. micro-wave oven according to claim 1 or 5, is characterized in that, the distance of the center line of described inner wire and the first end of described waveguide cavity is the odd-multiple of 1/4th waveguide wavelengths.
7. micro-wave oven according to claim 1, is characterized in that, described coaxial connector is connected with described microwave source by coaxial cable or radio frequency connector.
8. micro-wave oven according to claim 1, is characterized in that, described outer conductor is connected with the outer surface of described waveguide, and described inner wire is connected with the diapire of described waveguide cavity.
9. a driver, is characterized in that, comprising:
Waveguide, has waveguide cavity in described waveguide, and the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, and the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end; With
Coaxial connector, described coaxial connector comprises outer conductor and is positioned at the inner wire of inner side of described outer conductor, described inner wire is through the outer surface of described waveguide and stretch in described waveguide cavity.
10. a waveguide, it is characterized in that having waveguide cavity in described waveguide, the first end sealing of described waveguide cavity and the second end of described waveguide cavity open wide, the cross-sectional area of described waveguide cavity increases to described the second end from described first end, and wherein said first end is relative with described the second end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422211.XU CN204006180U (en) | 2014-07-29 | 2014-07-29 | Micro-wave oven and driver thereof, waveguide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420422211.XU CN204006180U (en) | 2014-07-29 | 2014-07-29 | Micro-wave oven and driver thereof, waveguide |
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| CN204006180U true CN204006180U (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676674A (en) * | 2014-07-29 | 2015-06-03 | 广东美的厨房电器制造有限公司 | Microwave oven, and exciter and waveguide thereof |
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2014
- 2014-07-29 CN CN201420422211.XU patent/CN204006180U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676674A (en) * | 2014-07-29 | 2015-06-03 | 广东美的厨房电器制造有限公司 | Microwave oven, and exciter and waveguide thereof |
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Granted publication date: 20141210 |