CN105430786A - Microwave heating equipment - Google Patents
Microwave heating equipment Download PDFInfo
- Publication number
- CN105430786A CN105430786A CN201510980938.9A CN201510980938A CN105430786A CN 105430786 A CN105430786 A CN 105430786A CN 201510980938 A CN201510980938 A CN 201510980938A CN 105430786 A CN105430786 A CN 105430786A
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- China
- Prior art keywords
- antenna
- mast
- heating chamber
- microwave
- heating equipment
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- 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
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- 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
Abstract
The invention relates to the field of household appliances, and discloses microwave heating equipment. The microwave heating equipment comprises a plurality of antennas, a microwave source and a heating chamber, wherein the microwave source is connected with the plurality of antennas; the plurality of antennas transmit microwaves generated by the microwave source to the heating chamber; each antenna comprises an earth plate and an antenna post; each antenna post comprises a first antenna post and a second antenna post; each first antenna post is vertical to each earth plate; a microwave feed inlet is arranged at a port of each first antenna post; and each second antenna post is vertically connected with each first antenna post. The microwaves generated by the microwave source are transmitted to the heating chamber of the microwave heating equipment through the antennas in the absence of a waveguide; the microwave transmission link is reduced; and the microwave transmission efficiency is improved, so that the heating time is shortened.
Description
Technical field
The present invention relates to household appliance technical field, particularly, relate to a kind of 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 microwave heating equipment, the Microwave emission that described microwave source directly can be produced by multiple antenna by this microwave heating equipment, to described heating chamber, reduces lossy microwave, thus provides microwave transfer efficiency.
To achieve these goals, the invention provides a kind of microwave heating equipment, described microwave heating equipment comprises: multiple antenna; Microwave source, is connected with described multiple antenna; And heating chamber, the Microwave emission that described microwave source produces by described multiple antenna is to described heating chamber, and wherein, described 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, described microwave heating equipment comprises the first antenna, the second antenna, third antenna and the 4th antenna four antennas.
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.
Preferably, the shape of described heating chamber is rectangle, and the length range of wherein said heating chamber is 378mm to 438mm; The width range of described heating chamber is 330mm to 390mm; And the altitude range of described heating chamber is 227mm to 287mm.
Preferably, described first antenna and described second antenna are positioned at the left surface of described heating chamber; Described third antenna and described 4th antenna are positioned at the trailing flank of described heating chamber.
Preferably, the distance range of the first mast of described first antenna and the end face of described heating chamber is 49mm to 59mm, is 83mm to 93mm with the distance range of the shop front of described heating chamber; The distance range of the first mast of described second antenna and the end face of described heating chamber is 57mm to 67mm, is 210mm to 220mm with the distance range of the shop front of described heating chamber; The distance range of the first mast of described third antenna and the end face of described heating chamber is 53mm to 63mm, is 149mm to 159mm with the distance range of the shop front of described heating chamber; And the distance range of described first mast of the 4th antenna and the end face of described heating chamber is 98mm to 108mm, is 252mm to 262mm with the distance range of the shop front of described heating chamber.
Preferably, the second mast of described first antenna and the vertical sensing shop front of described heating chamber; Second mast of described second antenna is parallel with the shop front of described heating chamber and point to the bottom surface of described heating chamber; Second mast of described third antenna and the plane perpendicular line of described heating chamber are 30 degree of angles and point to the lower left of described heating chamber; Second mast of described 4th antenna is parallel with the bottom surface of described heating chamber and point to the left surface of described heating chamber.
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 multiple antennas 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 structured flowchart according to the invention provides microwave heating equipment;
Fig. 2 is the structural representation according to the antenna that the invention provides microwave heating equipment;
Fig. 3 is antenna according to one embodiment of the present invention and the schematic diagram adopting indirect connections to be connected between microwave source;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Fig. 5 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. 6 is the structural representation of the microwave heating equipment provided according to one embodiment of the present invention;
Fig. 7 provides the structural representation of the microwave heating equipment provided according to one embodiment of the present invention;
Fig. 8 provides the structural representation of the microwave heating equipment provided according to another embodiment of the invention;
Fig. 9 is the standing wave value curve chart of the microwave feed-in mouth of each antenna in the microwave heating equipment provided according to one embodiment of the present invention; And
Figure 10 is the curve chart of the isolation of each antenna in the microwave heating equipment provided according to one embodiment of the present invention.
Description of reference numerals
1 first antenna 2 second antenna
3 third antennas 4 the 4th antenna
10 microwave source 20 antennas
30 heating chamber 210 ground plates
221 first mast 222 second masts
223 microwave feed-in mouth 230 grounded antenna sheets
50 radio frequency connector 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 structured flowchart according to the invention provides microwave heating equipment, and Fig. 2 is the structural representation according to the antenna that the invention provides microwave heating equipment.As depicted in figs. 1 and 2, microwave heating equipment provided by the invention can comprise: multiple antenna 20; Microwave source 10, is connected with described multiple antenna 20; And heating chamber 30, the Microwave emission that described microwave source 10 produces by described multiple antenna 20 is to described heating chamber 30, and wherein, described antenna 20 comprises: ground plate 210; And mast, comprising: the first mast 221, vertical with described ground plate 210, and the port of described first mast 221 is microwave feed-in mouth 223; Second mast 222, is connected with described first mast 221 is vertical.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.
As shown in Figure 2, described antenna can also comprise grounded antenna sheet 230, and described mast is connected with described ground plate 210 by described grounded antenna sheet 230.Wherein, ground plate 210, mast, grounded antenna sheet 230 are all conductor metal (such as, good conductor metal), mast does not directly contact with ground plate 10, but by grounded antenna sheet 230, (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 230 and described mast and described ground plate 210 can for the one in following: weld, screw fixes and buckle etc.Ground plate 210 is unrestricted with the geomery of grounded antenna sheet 230, can determine according to actual conditions.
The microwave feed-in mouth 223 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. 3 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. 4 is the partial enlarged drawing of Fig. 3.As shown in Figures 3 and 4, described microwave feed-in mouth 223 can be connected with the output of described microwave source 30 by radio frequency connector 50.Wherein, the output of described microwave source 30 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 30 or pedestal, and the outer conductor of described radio frequency connector 50 and described microwave source 30 are altogether; Described microwave feed-in mouth 223 is connected with the inner wire of described radio frequency connector 50, and described ground plate 210 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 30 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 30 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. 5 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 5, the output of microwave source 30 is connected with the microwave feed-in mouth 223 of antenna, and ground plate 210 and microwave source 30 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.
Describe the present invention below with reference to Fig. 6 in detail with embodiment, but it should be noted that the present invention is not restricted to this.Antenna configuration is in this embodiment preferably, and wherein individual configuration can independent or multiple use of coming together.
In this embodiment, as shown in Figure 6, described microwave heating equipment comprises the first antenna 1, second antenna 2, third antenna 3 and the 4th antenna 4 totally four antennas.
Wherein, the shape of described heating chamber 30 is rectangle, and the length range of wherein said heating chamber is 378mm to 438mm; The width range of described heating chamber is 330mm to 390mm; And the altitude range of described heating chamber is 227mm to 287mm.
As shown in Figure 6, described first antenna 1 and described second antenna 2 can be positioned at the left surface of described heating chamber 30; Described third antenna 3 and described 4th antenna 4 are positioned at the trailing flank of described heating chamber 30.
Wherein, the distance range h1 of described first mast of the first antenna 1 and the end face of described heating chamber 30 is 49mm to 59mm, is 83mm to 93mm with the distance range d1 of the shop front of described heating chamber 30; The distance range h2 of described first mast of the second antenna 2 and the end face of described heating chamber 30 is 57mm to 67mm, is 210mm to 220mm with the distance range d2 of the shop front of described heating chamber 30; The distance range h3 of the first mast of described third antenna 3 and the end face of described heating chamber 30 is 53mm to 63mm, is 149mm to 159mm with the distance range d3 of the shop front of described heating chamber 30; And the distance range h4 of described first mast of the 4th antenna 4 and the end face of described heating chamber 30 is 98mm to 108mm, is 252mm to 262mm with the distance range d4 of the shop front of described heating chamber 30.
As shown in Figure 6, the second mast of described first antenna 1 and the vertical sensing shop front of described heating chamber 30; Second mast of described second antenna 2 is parallel with the shop front of described heating chamber 30 and point to the bottom surface of described heating chamber 30; Second mast of described third antenna 3 and the plane perpendicular line of described heating chamber 30 are 30 degree of angles and point to the lower left of described heating chamber 30; Second mast of described 4th antenna 4 is parallel with the bottom surface of described heating chamber 30 and point to the left surface of described heating chamber 30.
Fig. 7 provides the structural representation of the microwave heating equipment provided according to one embodiment of the present invention, wherein only illustrates that an antenna is to be described.As shown in Figure 7, described antenna is fixed on the wall of described heating chamber 30; The ground plate 210 of described heating chamber 30 and described antenna altogether.
The wall of heating chamber 30 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 30 by metal.Therefore think constraint microwave metal be the ground of heating chamber, then ground plate 210 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 7, ground plate 210 can be positioned at the inner side of heating chamber 30, and as shown in Figure 8, ground plate 210 also can be positioned at the outside of heating chamber 30.The fixed form of heating chamber 30 and the ground plate 210 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 30 and antenna.
In addition; antenna can be made directly to be inserted in heating chamber 30 owing to not adopting the mode of waveguide; thus as shown in Figure 8; need to increase block piece 270 to protect antenna; block piece 270 require use can penetrate the material not absorbing microwave, its can be following in one: mica sheet, plastics and glass.
Microwave transmission efficiency weighs a whether excellent important indicator of cavity design, need the standing wave value detecting each feed-in mouth of 2.4GHz-2.5GHz frequency range, based on above-mentioned preferred structure, Fig. 9 is the standing wave value that experiment records four microwave feed-in mouths in heating chamber of the present invention, is wherein placed with 1Kg water in heating chamber during test.
As can be seen from Figure 9, the standing wave value of four microwave feed-in mouths is (the smaller the better, ideal value is 1) be nearly all less than for 2 (that is, efficiency of transmission is greater than 88.9%) at full frequency band, and major part value was all less than for 1.5 (namely efficiency of transmission is greater than 96%).
In 2.4GHz-2.5GHz frequency range, the minimum value of isolation between two (absolute value) between each antenna is 10dB (10dB that is 10 times, represent the attenuation multiple of power transimission between two antennas, such as, when the first antenna and the second antenna work simultaneously, the power of the first antenna transmission is 100W, 10W is then had to be received by the second antenna, do not arrive heating object, otherwise the power of the second antenna transmission is 100W, also 10W is had to be received by the first antenna), isolation is higher, and (20dB is 100 times, 30dB is 1000 times) then illustrate that the microwave power mutually absorbed between each antenna is fewer, the microwave power finally arriving heating object is also more, on the other hand, also can reduce the reflection power of each antenna, prevent reflection power from burning microwave source.The curve chart of isolation when Figure 10 shows four antenna colleague work.As shown in Figure 10, the invention provides four antennas isolation between any two better.Wherein, Trc10, Trc11, Trc12, Trc14, Trc15, Trc16 represent 6 curves in figure respectively; S12, S13, S14, S24, S23, S34 represent four antennas isolation between any two respectively; Mag5dB refers to the scale value (scale) of ordinate, every lattice 5dB; Ref0dB refers to that in figure, reference line is 0dB line; Caloffs is device information; The ordinate of Figure 10 is dB value, and abscissa is frequency (2.4GHz-2.5GHz); The coordinate figure of conveniently readings set when M1 in Figure 10 is test.
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 (11)
1. a microwave heating equipment, is characterized in that, described microwave heating equipment comprises:
Multiple antenna;
Microwave source, is connected with described multiple antenna; And
Heating chamber, the Microwave emission that described microwave source produces by described multiple antenna is described heating chamber extremely,
Wherein, described 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. microwave heating equipment 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. microwave heating equipment according to claim 2, is characterized in that, described microwave heating equipment comprises the first antenna, the second antenna, third antenna and the 4th antenna four antennas.
4. microwave heating equipment according to claim 3, 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.
5. microwave heating equipment according to claim 4, is characterized in that, the shape of described heating chamber is rectangle, wherein
The length range of described heating chamber is 378mm to 438mm;
The width range of described heating chamber is 330mm to 390mm; And
The altitude range of described heating chamber is 227mm to 287mm.
6. microwave heating equipment according to claim 5, is characterized in that,
Described first antenna and described second antenna are positioned at the left surface of described heating chamber;
Described third antenna and described 4th antenna are positioned at the trailing flank of described heating chamber.
7. microwave heating equipment according to claim 6, is characterized in that,
The distance range of the first mast of described first antenna and the end face of described heating chamber is 49mm to 59mm, is 83mm to 93mm with the distance range of the shop front of described heating chamber;
The distance range of the first mast of described second antenna and the end face of described heating chamber is 57mm to 67mm, is 210mm to 220mm with the distance range of the shop front of described heating chamber;
The distance range of the first mast of described third antenna and the end face of described heating chamber is 53mm to 63mm, is 149mm to 159mm with the distance range of the shop front of described heating chamber; And
The distance range of described first mast of the 4th antenna and the end face of described heating chamber is 98mm to 108mm, is 252mm to 262mm with the distance range of the shop front of described heating chamber.
8. microwave heating equipment according to claim 7, is characterized in that,
Second mast of described first antenna and the vertical sensing shop front of described heating chamber;
Second mast of described second antenna is parallel with the shop front of described heating chamber and point to the bottom surface of described heating chamber;
Second mast of described third antenna and the plane perpendicular line of described heating chamber are 30 degree of angles and point to the lower left of described heating chamber;
Second mast of described 4th antenna is parallel with the bottom surface of described heating chamber and point to the left surface of described heating chamber.
9. microwave heating equipment according to claim 1, is characterized in that, described microwave heating equipment also comprises the block piece for the protection of antenna.
10. microwave heating equipment according to claim 9, is characterized in that, the material of described block piece be following in one: mica sheet, plastics and glass.
11. microwave heating equipments according to any one of claim 1-10, it is characterized in that, described microwave source is produced by semiconductor microactuator wave generation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980938.9A CN105430786A (en) | 2015-12-22 | 2015-12-22 | Microwave heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980938.9A CN105430786A (en) | 2015-12-22 | 2015-12-22 | Microwave heating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105430786A true CN105430786A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510980938.9A Pending CN105430786A (en) | 2015-12-22 | 2015-12-22 | Microwave heating equipment |
Country Status (1)
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| CN (1) | CN105430786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211406A (en) * | 2016-07-13 | 2016-12-07 | 广东美的厨房电器制造有限公司 | Semiconductor microwave heater |
| 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 |
| WO2017020610A1 (en) * | 2015-08-06 | 2017-02-09 | 广东美的厨房电器制造有限公司 | Antenna for microwave heating and microwave heating device |
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| CN104676675A (en) * | 2014-08-12 | 2015-06-03 | 广东美的厨房电器制造有限公司 | Microwave oven and exciter for microwave oven |
| 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 |
| CN205320321U (en) * | 2015-12-22 | 2016-06-15 | 广东美的厨房电器制造有限公司 | Microwave heating equipment |
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| CN104676675A (en) * | 2014-08-12 | 2015-06-03 | 广东美的厨房电器制造有限公司 | Microwave oven and exciter for microwave oven |
| CN104373971A (en) * | 2014-11-13 | 2015-02-25 | 广东美的厨房电器制造有限公司 | Microwave oven and exciter for microwave oven |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020610A1 (en) * | 2015-08-06 | 2017-02-09 | 广东美的厨房电器制造有限公司 | Antenna for microwave heating and microwave heating device |
| CN106211406A (en) * | 2016-07-13 | 2016-12-07 | 广东美的厨房电器制造有限公司 | Semiconductor microwave heater |
| CN106211406B (en) * | 2016-07-13 | 2019-07-02 | 广东美的厨房电器制造有限公司 | Semiconductor microwave heating device |
| 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 |
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