CN105554932A - Antenna for microwave heating device and microwave heating device - Google Patents
Antenna for microwave heating device and microwave heating device Download PDFInfo
- Publication number
- CN105554932A CN105554932A CN201510979797.9A CN201510979797A CN105554932A CN 105554932 A CN105554932 A CN 105554932A CN 201510979797 A CN201510979797 A CN 201510979797A CN 105554932 A CN105554932 A CN 105554932A
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- CN
- China
- Prior art keywords
- microwave
- antenna
- mast
- ground plate
- microwave source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/72—Radiators or antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
The invention relates to the field of household appliances, and discloses an antenna for a microwave heating device and the microwave heating device. The antenna is used for emitting microwave generated by a microwave source to a heating chamber of the microwave heating device and comprises a grounding plate and an antenna rod, the antenna rod comprises a first antenna rod and a second antenna rod, the first antenna rod is perpendicular to the grounding plate, a port of the first antenna rod is a microwave feed port, and the second antenna rod is vertically connected with the first antenna rod. On the condition of no waveguide, the antenna is used for emitting the microwave generated by the microwave source to the heating chamber of the microwave heating device, thus, the microwave transfer step is reduced, the microwave transfer efficiency is improved, and the heating time is shortened.
Description
Technical field
The present invention relates to household appliance technical field, particularly, relate to a kind of antenna for microwave heating equipment and microwave heating equipment.
Background technology
Along with the improvement day by day of living standard, microwave heating equipment use is in daily life also increasing.In microwave heating equipment, normally produce microwave by microwave generator (that is, microwave source), then through antenna, waveguide by microwave transfer in the heating chamber placing heating object.In this process, the less then efficiency of loss is higher, and the raising of efficiency can reduce cooking time, energy savings.But, because the link of present microwave transfer is more, add lossy microwave, thus reduce microwave transfer efficiency, and then cause heating time longer.
Summary of the invention
The object of this invention is to provide a kind of antenna for microwave heating equipment and microwave heating equipment, this be used for microwave heating equipment antenna can directly by Microwave emission in heating chamber, reduce lossy microwave, thus provide microwave transfer efficiency.
To achieve these goals, the invention provides Microwave emission that described in a kind of antenna for microwave heating equipment, microwave source produces by the antenna heating chamber to described microwave heating equipment, this antenna comprises: ground plate; And mast, comprising: the first mast, vertical with described ground plate, and the port of described first mast is microwave feed-in mouth; Second mast, is connected with described first mast is vertical.
Preferably, described antenna also comprises: grounded antenna sheet, and described mast is connected with described ground plate by described grounded antenna sheet.
Preferably, the connected mode of described grounded antenna sheet and described mast and described ground plate be following in one: weld, screw fix and buckle.
Preferably, described microwave feed-in mouth is connected with the output of the mode indirectly connected or directly connect with described microwave source.
Preferably, the mode of described indirect link is: described microwave feed-in mouth is connected by the output of radio frequency connector with described microwave source; The mode of described direct link is: described microwave feed-in mouth is fixedly connected with the output of described microwave source.
Preferably, when described microwave feed-in mouth is connected with the output of described microwave source by described radio frequency connector, output and the described microwave feed-in mouth of described microwave source are connected with the inner wire of described radio frequency connector, the outer conductor of described radio frequency connector and the shell of described microwave source or pedestal and described ground plate are fixedly connected with, and the outer conductor of described radio frequency connector and described microwave source are altogether; When described microwave feed-in mouth is fixedly connected with the output of described microwave source, described ground plate and described microwave source are altogether.
Preferably, described ground plate, described mast and described grounded antenna sheet are conductor metal.
Preferably, described mast meets following at least one: the length range of described first mast is 7mm to 15mm; The length range of described second mast is 26mm to 34mm; Described first mast and described second mast are cylinder or cuboid; And the thickness range of described first mast and described second mast is 1.5mm to 4.5mm.
Correspondingly, the present invention also provides a kind of microwave heating equipment, and described microwave heating equipment comprises: above-mentioned antenna; Microwave source, is connected with described antenna; And heating chamber, the Microwave emission that described microwave source produces by described antenna is to described heating chamber.
Preferably, described antenna is fixed on the wall of described heating chamber.
Preferably, the ground plate of described heating chamber and described antenna altogether.
Preferably, the fixed form of described heating chamber and the ground plate of described antenna is for weld or screw is fixed.
Preferably, described microwave heating equipment also comprises the block piece for the protection of antenna.
Preferably, the material of described block piece be following in one: mica sheet, plastics and glass.
Preferably, described microwave source is produced by semiconductor microactuator wave generation device.
Pass through technique scheme, the first mast for the antenna of microwave heating equipment is vertical with described ground plate, and the port of described first mast is microwave feed-in mouth, second mast and described first mast, so when not having waveguide, the Microwave emission produced by microwave source by described antenna, to the heating chamber of microwave heating equipment, decreases microwave transfer link, improve microwave transfer efficiency, thus shorten heating time.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the antenna for microwave heating equipment provided according to one embodiment of the present invention;
Fig. 2 is antenna according to one embodiment of the present invention and the schematic diagram adopting indirect connections to be connected between microwave source;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is antenna according to one embodiment of the present invention and the schematic diagram adopting direct connected mode to be connected between microwave source;
Fig. 5 is the structural representation of the microwave heating equipment provided according to one embodiment of the present invention;
Fig. 6 is the structural representation of the microwave heating equipment provided according to another embodiment of the present invention;
Fig. 7 is the standing wave curve chart of antenna under 2.4GHz-2.5GHz frequency range provided according to one embodiment of the present invention; And
Fig. 8 is according to standing wave curve chart during antenna rotation 30 degree provided by the invention.
Description of reference numerals
10 ground plate 21 first masts
22 second mast 23 microwave feed-in mouths
30 grounded antenna sheet 40 microwave sources
50 radio frequency connector 60 heating chambers
70 block pieces
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the structural representation of the antenna for microwave heating equipment provided according to one embodiment of the present invention.As shown in Figure 1, the antenna for microwave heating equipment provided by the invention can comprise: ground plate 10; And mast, can comprise: the first mast 21, vertical with described ground plate, and the port of described first mast 21 is microwave feed-in mouth 23; Second mast 22, is connected with described first mast 21 is vertical.The Microwave emission produced by microwave source by described antenna, to the heating chamber of microwave heating equipment, decreases microwave transfer link, improves microwave transfer efficiency, thus shortens heating time.
Described antenna can also comprise grounded antenna sheet 30, and described mast is connected with described ground plate 10 by described grounded antenna sheet 30.Wherein, ground plate 10, mast, grounded antenna sheet 30 are all conductor metal (such as, good conductor metal), mast does not directly contact with ground plate 10, but by grounded antenna sheet 30, (one end connects mast, one end connects ground plate) realize on three's circuit conducting, to guarantee good conducting.The connected mode of grounded antenna sheet 30 and described mast and described ground plate 10 can for the one in following: weld, screw fixes and buckle etc.Ground plate 10 is unrestricted with the geomery of grounded antenna sheet 30, can determine according to actual conditions.
The microwave feed-in mouth 23 of antenna provided by the invention can be connected with the output of the mode indirectly connected or directly connect with described microwave source.
Fig. 2 is antenna according to one embodiment of the present invention and the schematic diagram adopting indirect connections to be connected between microwave source, and Fig. 3 is the partial enlarged drawing of Fig. 2.As shown in Figures 2 and 3, described microwave feed-in mouth 23 can be connected with the output of described microwave source 40 by radio frequency connector 50.Wherein, the output of described microwave source 40 can be connected with the inner wire of described radio frequency connector 50, the outer conductor of described radio frequency connector 50 such as can be fixedly connected with by the shell of the devices such as flange and described microwave source 40 or pedestal, and the outer conductor of described radio frequency connector 50 and described microwave source 40 are altogether; Described microwave feed-in mouth 23 is connected with the inner wire of described radio frequency connector 50, and described ground plate 10 is such as fixedly connected with outer conductor by devices such as flanges.It should be noted that the radio frequency connector 50 be connected with microwave source 40 and the radio frequency connector 50 be connected with antenna must match, namely when being female for one, another is male, and vice versa.The benefit of so indirect connection is that flexibility is better, after antenna and radio frequency connector 50 are fixed, convenient disassembly in debugging, and when microwave source 40 closely directly can not be connected with antenna, the two can also increase radio frequency cable to connect, so make structural design more flexible, but this indirect mode add cost and loss.
Fig. 4 is antenna according to one embodiment of the present invention and the schematic diagram adopting direct connected mode to be connected between microwave source.As shown in Figure 4, the output of microwave source 40 is connected with the microwave feed-in mouth 23 of antenna, and ground plate 10 and microwave source 40 be (such as, fanatic to be connected with its shell or pedestal) altogether.The advantage of this connected mode is that structure is simple, and loss is little, and cost is low; But flexibility is lower.
Wherein, described mast meets following at least one: length (mast is to the vertical range of the ground plate 10) scope of described first mast is 7mm to 15mm; The length range of described second mast is 26mm to 34mm; Described first mast and described second mast are cylinder or cuboid; And the thickness range of described first mast and described second mast is 1.5mm to 4.5mm.
Correspondingly, the present invention also provides a kind of microwave heating equipment, such as microwave oven.As shown in Figure 5, described microwave heating equipment comprises: above-mentioned antenna; Microwave source 40, is connected with described antenna; And heating chamber 60, the Microwave emission that described microwave source 40 produces by described antenna is to described heating chamber 60.So when not having waveguide, the Microwave emission produced by microwave source by described antenna, to the heating chamber of microwave heating equipment, decreases microwave transfer link, improves microwave transfer efficiency, thus shortens heating time.
In addition, as shown in Figure 5, described antenna is fixed on the wall of described heating chamber 60; The ground plate 10 of described heating chamber 60 and described antenna altogether.
The wall of heating chamber 60 is generally made up of metal material, although sometimes can increase other materials according to design, for microwave property, microwave need be constrained in heating chamber 60 by metal.Therefore think constraint microwave metal be the ground of heating chamber, then ground plate 10 must with its compact siro spinning technology, and centre can not increase insulation or poor conductor material, with the conducting on realizing circuit.
As shown in Figure 5, ground plate 10 can be positioned at the inner side of heating chamber 60, and as shown in Figure 6, ground plate 10 also can be positioned at the outside of heating chamber 60.The fixed form of heating chamber 60 and the ground plate 10 of antenna can for welding, screw is fixing etc., but need to ensure, after fixing, can not there is deformation in the outer wall of heating chamber 60 and antenna.
In addition; antenna can be made directly to be inserted in heating chamber 60 owing to not adopting the mode of waveguide; thus as shown in Fig. 5 heat exchange 6; need to increase block piece 70 to protect antenna; block piece 70 require use can penetrate the material not absorbing microwave, its can be following in one: mica sheet, plastics and glass.
In one embodiment of the invention, antenna is set to: length (mast is to the vertical range of the ground plate 10) scope of described first mast is 7mm to 15mm; The length range of described second mast is 26mm to 34mm; Described first mast and described second mast are cylinder or cuboid; And the thickness range of described first mast and described second mast is 1.5mm to 4.5mm.Be 2.4GHz-2.5GHz at the working frequency range of antenna, the standing wave under this frequency range as shown in Figure 7.Weigh efficiency of transmission with standing wave, standing wave is 1 to 1.04, and efficiency of transmission is 100%, is theoretical value, is difficult to reach.Standing wave is 1.3, and represent that microwave transmission efficiency is now 98.3%, efficiency of transmission when standing wave is 1.6 is 94.7%, and when standing wave is 2, efficiency of transmission is 88.9%.
In debug process, the angle of mast can be regulated to regulate impedance, change standing wave, Fig. 8 is that mast is to standing wave curve when left-handed 30 degree.
When 2.45GHz, when putting into 1000ml water in heating chamber, by the relation of mast rotational angle (vertical bottom face is 0 degree downwards, turns clockwise) and standing wave as table 1:
Table 1
0 | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 | 330 | 360 |
1.4 | 1.6 | 2.4 | 1.8 | 1.6 | 1.5 | 1.3 | 1.5 | 2.1 | 1.6 | 1.7 | 1.9 | 2.0 |
By above-mentioned test, can draw, antenna provided by the invention, when not having waveguide by Microwave emission to heating chamber, its efficiency of transmission is higher, thus can calculate the heating time of many microwave heating equipments.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (15)
1. for an antenna for microwave heating equipment, it is characterized in that, the Microwave emission that microwave source produces by described antenna is to the heating chamber of described microwave heating equipment, and this antenna comprises:
Ground plate; And
Mast, comprising:
First mast, vertical with described ground plate, and the port of described first mast is microwave feed-in mouth;
Second mast, is connected with described first mast is vertical.
2. antenna according to claim 1, is characterized in that, described antenna also comprises: grounded antenna sheet, and described mast is connected with described ground plate by described grounded antenna sheet.
3. antenna according to claim 2, is characterized in that, the connected mode of described grounded antenna sheet and described mast and described ground plate be following in one: weld, screw fix and buckle.
4. antenna according to claim 1, is characterized in that, described microwave feed-in mouth is connected with the output of the mode indirectly connected or directly connect with described microwave source.
5. antenna according to claim 4, is characterized in that,
The mode of described indirect link is: described microwave feed-in mouth is connected by the output of radio frequency connector with described microwave source;
The mode of described direct link is: described microwave feed-in mouth is fixedly connected with the output of described microwave source.
6. antenna according to claim 5, is characterized in that,
When described microwave feed-in mouth is connected with the output of described microwave source by described radio frequency connector, output and the described microwave feed-in mouth of described microwave source are connected with the inner wire of described radio frequency connector, the outer conductor of described radio frequency connector and the shell of described microwave source or pedestal and described ground plate are fixedly connected with, and the outer conductor of described radio frequency connector and described microwave source are altogether;
When described microwave feed-in mouth is fixedly connected with the output of described microwave source, described ground plate and described microwave source are altogether.
7. antenna according to claim 2, is characterized in that, described ground plate, described mast and described grounded antenna sheet are conductor metal.
8. the antenna according to any one of claim 1-7, is characterized in that, described mast meets following at least one:
The length range of described first mast is 7mm to 15mm;
The length range of described second mast is 26mm to 34mm;
Described first mast and described second mast are cylinder or cuboid; And
The thickness range of described first mast and described second mast is 1.5mm to 4.5mm.
9. a microwave heating equipment, is characterized in that, described microwave heating equipment comprises:
Antenna according to any one of claim 1-8;
Microwave source, is connected with described antenna; And
Heating chamber, the Microwave emission that described microwave source produces by described antenna is to described heating chamber.
10. microwave heating equipment according to claim 9, is characterized in that, described antenna is fixed on the wall of described heating chamber.
11. microwave heating equipments according to claim 9, is characterized in that, the ground plate of described heating chamber and described antenna altogether.
12. microwave heating equipments according to claim 11, is characterized in that, the fixed form of described heating chamber and the ground plate of described antenna is for weld or screw is fixed.
13. microwave heating equipments according to claim 9, is characterized in that, described microwave heating equipment also comprises the block piece for the protection of antenna.
14. microwave heating equipments according to claim 13, is characterized in that, the material of described block piece be following in one: mica sheet, plastics and glass.
15. microwave heating equipments according to any one of claim 1-14, it is characterized in that, described microwave source is produced by semiconductor microactuator wave generation device.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510979797.9A CN105554932A (en) | 2015-12-22 | 2015-12-22 | Antenna for microwave heating device and microwave heating device |
PCT/CN2016/079761 WO2017020610A1 (en) | 2015-08-06 | 2016-04-20 | Antenna for microwave heating and microwave heating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510979797.9A CN105554932A (en) | 2015-12-22 | 2015-12-22 | Antenna for microwave heating device and microwave heating device |
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CN105554932A true CN105554932A (en) | 2016-05-04 |
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CN201510979797.9A Pending CN105554932A (en) | 2015-08-06 | 2015-12-22 | Antenna for microwave heating device and microwave heating device |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106231712A (en) * | 2016-09-19 | 2016-12-14 | 广东美的厨房电器制造有限公司 | The antenna module of microwave oven and microwave oven |
CN112165745A (en) * | 2020-09-30 | 2021-01-01 | 广东美的厨房电器制造有限公司 | Microwave emitting assembly, microwave heating appliance, method, device and storage medium |
CN112210974A (en) * | 2019-07-11 | 2021-01-12 | 青岛海尔洗衣机有限公司 | Radio frequency antenna and clothes drying equipment |
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CN103912900A (en) * | 2014-03-20 | 2014-07-09 | 广东美的厨房电器制造有限公司 | Semiconductor microwave generator connection structure of microwave oven and microwave oven |
CN203757797U (en) * | 2014-03-20 | 2014-08-06 | 广东美的厨房电器制造有限公司 | Microwave oven and semiconductor microwave generator input/output connection structure thereof |
CN105071017A (en) * | 2015-08-06 | 2015-11-18 | 广东美的厨房电器制造有限公司 | Antenna for microwave heating and microwave heating equipment |
CN205320322U (en) * | 2015-12-22 | 2016-06-15 | 广东美的厨房电器制造有限公司 | A antenna and microwave heating equipment for microwave heating equipment |
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2015
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103912900A (en) * | 2014-03-20 | 2014-07-09 | 广东美的厨房电器制造有限公司 | Semiconductor microwave generator connection structure of microwave oven and microwave oven |
CN203757797U (en) * | 2014-03-20 | 2014-08-06 | 广东美的厨房电器制造有限公司 | Microwave oven and semiconductor microwave generator input/output connection structure thereof |
CN105071017A (en) * | 2015-08-06 | 2015-11-18 | 广东美的厨房电器制造有限公司 | Antenna for microwave heating and microwave heating equipment |
CN205320322U (en) * | 2015-12-22 | 2016-06-15 | 广东美的厨房电器制造有限公司 | A antenna and microwave heating equipment for microwave heating equipment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106231712A (en) * | 2016-09-19 | 2016-12-14 | 广东美的厨房电器制造有限公司 | The antenna module of microwave oven and microwave oven |
CN106231712B (en) * | 2016-09-19 | 2023-04-07 | 广东美的厨房电器制造有限公司 | Antenna assembly of microwave oven and microwave oven |
CN112210974A (en) * | 2019-07-11 | 2021-01-12 | 青岛海尔洗衣机有限公司 | Radio frequency antenna and clothes drying equipment |
CN112165745A (en) * | 2020-09-30 | 2021-01-01 | 广东美的厨房电器制造有限公司 | Microwave emitting assembly, microwave heating appliance, method, device and storage medium |
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