CN107087323A - Microwave heats heat conductive rod - Google Patents
Microwave heats heat conductive rod Download PDFInfo
- Publication number
- CN107087323A CN107087323A CN201710365406.3A CN201710365406A CN107087323A CN 107087323 A CN107087323 A CN 107087323A CN 201710365406 A CN201710365406 A CN 201710365406A CN 107087323 A CN107087323 A CN 107087323A
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- Prior art keywords
- microwave
- antenna
- heat conductive
- conductive rod
- transmitting antenna
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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
-
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Aerials (AREA)
Abstract
The present invention relates to heat transfer technical field, particularly a kind of microwave heating heat conductive rod.It is characterized in that：At least include microwave antenna, Microwave emission transmitting antenna, microwave antenna is connected with microwave transmitting antenna by feeder line, the microwave transmitting antenna is sent to by feeder line after the microwave antenna reception space microwave energy, launched microwave energy to heating object by the microwave transmitting antenna.Beneficial effect is：Using microwave antenna by inside part microwave transmission to heating object, thus realize heating object inside and surface temperature it is uniform.
Description
Technical field
The present invention relates to heat transfer technical field, particularly a kind of microwave heating heat conductive rod.
Background technology
Microwave heating technique be using electromagnetic wave inside energy transmission to heated material, in material polar molecule with it is micro-
The field interactions of ripple electromagnetism and shake, numerous polar molecules because it is frequent each other frictional dissipation, make electromagnetic energy for heat
Energy.
Microwave heating belongs to medium heating category, and although some medium is nonpolar molecule composition, but also can be not
With microwave is absorbed in degree, its principle may be interpreted as this material molecule and elastic deformation occur under microwave field and heat.It is another
Class medium, they do not absorb substantially or seldom absorb microwave, such as polytetrafluoroethylene (PTFE), polypropylene, polyethylene, polysulfone plastic and glass
Glass, ceramics etc., they can pass through microwave, without absorbing microwave, this kind of material can as heating container or supporter, or cry
Microwave seal material.
Microwave heating equipment conventional two kinds of microwave operational frequencies 915MHz and 2450MHz, household microwave oven working frequency
For 2450MHz, industrial generally 915MHz, in microwave heating, dielectric heat degree and microwave frequency, electromagnetic field intensity,
The relating to parameters such as the dielectric constant and Dielectric loss tangent value of medium itself, in microwave heating process, are also penetrated in the presence of one
Ability and heat penetration problem.Electromagnetic wave enters from the surface of medium and in its internal communication, because energy is constantly absorbed
And heat is converted into, the energy entrained by it is just decayed with the distance for going deep into dielectric surface with exponential law, and 915MH compares 2450MH
The depth of microwave penetration it is big.In household microwave oven heating larger food（Such as whole chicken）When, often foodstuff surface has burnt, and eats
Also in low-temperature condition inside thing, here it is because the depth as shallow of 2450MH microwave penetration food, microwave is on the surface of food
Quickly absorbed by food and the decay of energy exponentially rule, energy is very low when microwave reaches food therein.
The content of the invention
The thinking of the present invention is by inside part microwave transmission to heating object, so as to realize heated using microwave antenna
The inside of thing and the temperature on surface are uniform.
The technical scheme is that：
A kind of microwave heats heat conductive rod, it is characterized in that：At least include microwave antenna, Microwave emission transmitting antenna, microwave connects
Receive antenna with microwave transmitting antenna by feeder line to be connected, be sent to after the microwave antenna reception space microwave energy by feeder line
The microwave transmitting antenna, is launched microwave energy to heating object by the microwave transmitting antenna.
A kind of microwave heating heat conductive rod, it is characterized in that：The microwave antenna is element antenna or spiral day
Line or printed substrate antenna.
A kind of microwave heating heat conductive rod, it is characterized in that：The microwave transmitting antenna is element antenna or spiral day
Line or printed substrate antenna.
A kind of microwave heating heat conductive rod, it is characterized in that：The microwave antenna and microwave transmitting antenna are by print
Brush wiring board wire is made, and the microwave antenna and microwave transmitting antenna are connected by a printed circuit cable, described one
The symmetrical both sides of printed circuit cable are provided with two printed foils, and the printed foil is used as microwave transmission ground wire, is risen simultaneously
Microwave reflection plate is acted on.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave transmitting antenna is normal helical antenna, its parameter D/
λ<0.18, D is screw diameter, and λ is microwave wavelength.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave transmitting antenna is normal direction mould wiring board antenna, its parameter
D1/λ<0.18, D1 is wiring board antenna width, and λ is microwave wavelength.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave antenna is helical antenna, its parameter D/ λ ＞
0.5, D is screw diameter, and λ is microwave wavelength.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave antenna is wiring board antenna, its parameter D1/ λ ＞
0.5, D1 is wiring board antenna width, and λ is microwave wavelength.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave antenna and the Microwave emission transmitting antenna
Resonant frequency is identical with microwave frequency.
A kind of microwave heating heat conductive rod, it is characterized in that：Microwave antenna or the Microwave emission transmitting antenna
Geometrical length size is 1/8th or a quarter or 1/2nd or wavelength of microwave wavelength.
The beneficial effects of the invention are as follows：Using microwave antenna by inside part microwave transmission to heating object, so as to realize
The inside of heating object and the temperature on surface are uniform.
Brief description of the drawings
Fig. 1 is principle of the invention structure chart.
Fig. 2 is applied to the schematic diagram of micro-wave oven for the present invention.
Fig. 3 is embodiment of the present invention using annular closed antenna.
Fig. 4 is embodiment of the present invention using open-loop antenna.
Fig. 5 is embodiment of the present invention using helical antenna.
Fig. 6 is embodiment of the present invention using printed substrate antenna.
Fig. 7 is that helical antenna radiates schematic diagram.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is principle of the invention structure chart, and microwave heating heat conductive rod 105 includes shell 105, sets micro- in shell 105
Ripple component, microwave components include microwave transmitting antenna 101, microwave antenna 103, microwave transmitting antenna 101, and microwave receiving
Antenna 103 is connected by feeder line, and when microwave heat conductive rod is placed in microwave environment, microwave antenna 103 obtains Space Microwave energy,
Microwave transmitting antenna 101 is fed to by feeder line 102 to be launched.Assuming that the small space residing for microwave transmitting antenna 101 is micro-
Intensity of wave is than relatively low, and the small Space Microwave intensity residing for microwave antenna 103 is higher, and such microwave antenna 103 will
Microwave energy is sent at microwave transmitting antenna 101 by feeder line 102.
In view of resonance requirement, the resonant frequency and microwave frequency of microwave antenna or the Microwave emission transmitting antenna
It is identical.Dimensionally, the physical dimension of microwave antenna or the Microwave emission transmitting antenna for microwave wavelength four/
One or 1/2nd.
Shell 105 using do not absorb or seldom absorb microwave material be made, such as polytetrafluoroethylene (PTFE), polypropylene, polyethylene,
Plastics, glass, ceramics etc., they can pass through microwave, without absorbing microwave, because microwave antenna component and shell are in microwave environment
In itself will not generate heat, so shell and antenna attachment can be made using cryogenic material, such as non-toxic plastic.
The microwave antenna and microwave transmitting antenna are defined by actual use situation, microwave heating of the present invention
Two of heat conductive rod is equivalent, can be exchanged, if it is considered that one is beneficial to insertion heating object and this head can be made into point
Knife-like is simultaneously defined as one of microwave transmitting antenna, and other end can be arranged to handle for the ease of hand-held operation and be defined as
One of microwave antenna.
201 be microwave oven heating cavity in schematic diagrames of the Fig. 2 for the present invention applied to micro-wave oven, figure, and 202 be microwave
Heating object 203 is placed in device, generally magnetron, microwave heating chamber, during traditional heating, because microwave is worn to heating object
It is thoroughly limited in one's ability, cause heating object outer layer to be burnt, and heating object internal temperature is still than relatively low, such as family usually uses
The whole chicken feed thing of microwave stove heat, which will run into such case, figure, inserts microwave heat conductive rod 105 of the present invention in heating object, stays
One outside heating object as microwave antenna, one inside insertion heating object as microwave transmitting antenna,
So, the part microwave energy in microwave oven heating cavity space is imported inside heating object by microwave heating rod, realization is added
The uniform heating of hot thing.
Fig. 3 is embodiment of the present invention using annular closed antenna, and microwave antenna 303 will be micro- by feeder line 302
Wave energy is transmitted to microwave transmitting antenna 301, and the construction of microwave antenna is annular closed, and feeder line is two parallel wires.Certainly,
The microwave antenna, microwave transmitting antenna, feeder line can be made up of printed substrate wire.
Fig. 4 is embodiment of the present invention using open-loop antenna, and microwave antenna 403 is by feeder line 402 by microwave energy
Amount is transmitted to microwave transmitting antenna 401, and the construction of microwave antenna is open loop bifurcated, and feeder line is two parallel wires.Certainly, it is described
Microwave antenna, microwave transmitting antenna, feeder line can be made up of printed substrate wire.
Fig. 5 is embodiment of the present invention using helical antenna, and microwave antenna 503 is by feeder line 502 by microwave energy
Amount is transmitted to microwave transmitting antenna 501, and the construction of microwave antenna is spiral conducting line, and feeder line is to be led by microwave transmission ground wire Bao Yigen
Line is constituted, and the wire connects two spiral conducting lines.
Helical antenna (helical antenna) be it is a kind of there is spiral-shaped antenna, it is good by electric conductivity
Wire spiral is constituted, and coaxial feeding, the heart line of coaxial line is connected with one end of helix, the outer conductor of coaxial line then and
The wire netting (or plate) of ground connection (microwave transmission ground wire) is connected, and the radiation direction of helical antenna is relevant with helix circumference,
When than one wavelength of circumference of helix is much smaller, most strong direction is radiated perpendicular to helical axis, when helix circumference
For wavelength the order of magnitude when, most intense radiation is appeared on spiral spin axis direction.Reference picture 7, when D/ λ=0.25 ~ 0.46 (b,
I.e. one circle spiral circumference is about a wavelength) when, antenna has greatest irradiation in the axial direction, and produces circular polarisation in axis direction
Ripple, when D/ λ further increase, greatest irradiation direction off-axis direction；Normal helical antenna (D/ λ<0.18, reference picture
A) it is substantially thin wire antenna in 7, with figure-eight pattern, and frequency band is very narrow；Edge-emitted type helical antenna is a kind of normal direction mould
Helical antenna, places a metallic conductor on the central axis of spiral, the girth l=(M=2,3 ... is whole by M λ enclosed when spiral one
Number) when, produce greatest irradiation in the normal direction of spiral；Equiangular spiral antenna is a kind of normal helical antenna, and the two-arm of antenna exists
Deploy in one plane or by specific Curvature varying on the conical surface around rotation, the profile of the antenna is only determined by angle, not comprising line
Property length, thus the characteristic of antenna do not change by frequency and influenceed, and has extremely wide frequency band, the maximum spoke of planar equiangular spiral antenna
It is the normal orientation on plane both sides to penetrate direction, and radiates circularly polarised wave.
As microwave heating equipment（Including industrial 915MHz equipment and family expenses 2450MHz micro-wave ovens）Microwave generator
Magnetron typically is used, magnetron is crossed field microwave oscillator, in order to obtain big power capacity, the Q values of its resonator system
Very high, Microwave bandwidth is very narrow, thus in Fig. 7 a normal helical antenna (D/ λ<0.18, a) there is in reference picture 7 8-shaped side
Xiang Tu（Just it is adapted to microwave homogeneous radiation in heating object, so as to obtain the technique effect uniformly heated）, and frequency band is very
It is narrow, it is a kind of optimization of microwave transmitting antenna pattern of the present invention.For microwave antenna, c in reference picture 7, D/ λ ＞ 0.5 are more
Be conducive to absorbing spatial electromagnetic ripple, so D/ λ ＞ 0.5 pattern is a kind of optimization of microwave antenna.
Fig. 6 is embodiment of the present invention using printed substrate antenna, and microwave components are arranged on printed substrate 604
On, 601 be microwave transmitting antenna, and microwave antenna 603, microwave transmitting antenna 601 and microwave are connected to by printed circuit cable
Reception antenna 603 is printed substrate printed circuit cable, and 602 be printed foil, positioned at microwave transmitting antenna 601 and microwave receiving
Connecting wire between antenna 603（That is printed circuit cable）Symmetrical both sides, 602 use as microwave transmission ground wire, can play micro-
The effect of wave reflection plate.It is that antenna size is easily accurately manufactured using the advantage of printed substrate antenna, such antenna parameter can
So that very accurately, cost is low, easily produce in enormous quantities.D1 is wiring board antenna width.It is characterized in that：The microwave antenna
603 and microwave transmitting antenna 601 be made by printed substrate wire, the microwave antenna 603 and microwave transmitting antenna
601 are connected by a printed circuit cable, and the symmetrical both sides of a described printed circuit cable are provided with two printed foils 602, described
Printed foil is used as microwave transmission ground wire, while playing microwave reflection plate.
Fig. 6 is substantially a kind of shape changeable propeller antenna using the embodiment of printed substrate antenna, similarly, as microwave
Firing equipment（Including industrial 915MHz equipment and family expenses 2450MHz micro-wave ovens）Microwave generator typically use magnetron,
Magnetron is crossed field microwave oscillator, in order to obtain big power capacity, and the Q values of its resonator system are very high, and Microwave bandwidth is very
It is narrow, so normal helical antenna (D1/ λ<0.18, with figure-eight pattern, and frequency band is very narrow, is Microwave emission of the present invention
A kind of optimization of antenna mode.For microwave antenna, D1/ λ ＞ 0.5 are more beneficial for absorbing spatial electromagnetic ripple, so D1/ λ
＞ 0.5 pattern is a kind of optimization of microwave antenna.
Fig. 7 is that helical antenna radiates schematic diagram, and D is screw diameter, and λ is microwave wavelength, and L is the geometrical length chi of antenna
It is very little.
Above-mentioned microwave transmitting antenna and microwave antenna are not different in structure, can be by fact in actual use
Existing function makes a distinction, and its function is also to exchange.
Microwave antenna can select any of the above-described kind of form and arrange parameter as needed, and microwave transmitting antenna also may be used
To select any of the above-described kind of form and arrange parameter.
Microwave heating equipment conventional two kinds of microwave operational frequencies 915MHz and 2450MHz, household microwave oven working frequency
For 2450MHz, industrial generally 915MHz, the application of the suitable different frequency of the present invention.
Above-mentioned application model and rule do not limit the essential characteristic of the method and system of the present invention, and the non-limiting present invention
Protection domain.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of microwave heats heat conductive rod, it is characterized in that：At least include microwave antenna, Microwave emission transmitting antenna, microwave
Reception antenna is connected with microwave transmitting antenna by feeder line, is transmitted after the microwave antenna reception space microwave energy by feeder line
To the microwave transmitting antenna, microwave energy is launched to heating object by the microwave transmitting antenna.
2. a kind of microwave heats heat conductive rod according to claim 1, it is characterized in that：The microwave antenna is oscillator day
Line or helical antenna or printed substrate antenna.
3. a kind of microwave heats heat conductive rod according to claim 1, it is characterized in that：The microwave transmitting antenna is oscillator day
Line or helical antenna or printed substrate antenna.
4. a kind of microwave heats heat conductive rod according to claim 1, it is characterized in that：The microwave antenna and Microwave emission
Antenna is made by printed substrate wire, and the microwave antenna and microwave transmitting antenna are connected by a printed circuit cable,
The symmetrical both sides of a described printed circuit cable are provided with two printed foils, and the printed foil makes as microwave transmission ground wire
With while playing microwave reflection plate.
5. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：Microwave transmitting antenna is
Normal helical antenna, its parameter D/ λ<0.18, D is screw diameter, and λ is microwave wavelength.
6. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：Microwave transmitting antenna is
Normal direction mould wiring board antenna, its parameter D1/ λ<0.18, D1 is wiring board antenna width, and λ is microwave wavelength.
7. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：Microwave antenna is
Helical antenna, its parameter D/ λ ＞ 0.5, D is screw diameter, and λ is microwave wavelength.
8. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：Microwave antenna is
Wiring board antenna, its parameter D1/ λ ＞ 0.5, D1 is wiring board antenna width, and λ is microwave wavelength.
9. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：The microwave receiving day
The resonant frequency of line and Microwave emission transmitting antenna is identical with microwave frequency.
10. any microwave heating heat conductive rod according to claim 1 or 2 or 3 or 4, it is characterized in that：The microwave receiving day
The geometrical length size of line or Microwave emission transmitting antenna for microwave wavelength 1/8th or a quarter or 1/2nd,
Or a wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365406.3A CN107087323A (en) | 2017-05-22 | 2017-05-22 | Microwave heats heat conductive rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365406.3A CN107087323A (en) | 2017-05-22 | 2017-05-22 | Microwave heats heat conductive rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107087323A true CN107087323A (en) | 2017-08-22 |
Family
ID=59609181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710365406.3A Pending CN107087323A (en) | 2017-05-22 | 2017-05-22 | Microwave heats heat conductive rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107087323A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108567111A (en) * | 2017-03-14 | 2018-09-25 | 德国福维克控股公司 | The system for cooking at least one food |
| CN108770107A (en) * | 2018-08-02 | 2018-11-06 | 电子科技大学 | A kind of microwave device for columnar object heating |
| CN109496005A (en) * | 2018-11-23 | 2019-03-19 | 电子科技大学 | A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading |
| CN110191530A (en) * | 2019-05-28 | 2019-08-30 | 中国电子科技集团公司第十二研究所 | A kind of microwave radiation heating device |
| CN110859323A (en) * | 2018-08-08 | 2020-03-06 | 北京航天雷特机电工程有限公司 | Microwave cavity and electron cigarette |
| CN112137167A (en) * | 2019-06-28 | 2020-12-29 | 北京航天雷特机电工程有限公司 | Microwave antenna and electronic cigarette |
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| GB2119127A (en) * | 1982-03-03 | 1983-11-09 | Hitachi Heating Appl | High-frequency heating apparatus with wireless temperature probe |
| JPS5944792A (en) * | 1982-09-07 | 1984-03-13 | 株式会社日立ホームテック | High frequency heater with wireless probe |
| CN102635884A (en) * | 2012-03-27 | 2012-08-15 | 广东美的微波电器制造有限公司 | Microwave unfreezing device |
| CN203223954U (en) * | 2013-05-02 | 2013-10-02 | 芦雷 | Household microwave oven |
| CN104748179A (en) * | 2013-12-26 | 2015-07-01 | 东部大宇电子株式会社 | Microwave Oven Using Ohmic Heating |
| CN105188175A (en) * | 2015-07-31 | 2015-12-23 | 刘西叶 | Universal microwave generating equipment, microwave heating equipment and heating method |
| US20160150602A1 (en) * | 2014-11-21 | 2016-05-26 | Elwha Llc | Microwave heating element |
-
2017
- 2017-05-22 CN CN201710365406.3A patent/CN107087323A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119127A (en) * | 1982-03-03 | 1983-11-09 | Hitachi Heating Appl | High-frequency heating apparatus with wireless temperature probe |
| JPS5944792A (en) * | 1982-09-07 | 1984-03-13 | 株式会社日立ホームテック | High frequency heater with wireless probe |
| CN102635884A (en) * | 2012-03-27 | 2012-08-15 | 广东美的微波电器制造有限公司 | Microwave unfreezing device |
| CN203223954U (en) * | 2013-05-02 | 2013-10-02 | 芦雷 | Household microwave oven |
| CN104748179A (en) * | 2013-12-26 | 2015-07-01 | 东部大宇电子株式会社 | Microwave Oven Using Ohmic Heating |
| US20160150602A1 (en) * | 2014-11-21 | 2016-05-26 | Elwha Llc | Microwave heating element |
| CN105188175A (en) * | 2015-07-31 | 2015-12-23 | 刘西叶 | Universal microwave generating equipment, microwave heating equipment and heating method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108567111A (en) * | 2017-03-14 | 2018-09-25 | 德国福维克控股公司 | The system for cooking at least one food |
| CN108567111B (en) * | 2017-03-14 | 2022-06-24 | 德国福维克控股公司 | System for cooking at least one food product |
| CN108770107A (en) * | 2018-08-02 | 2018-11-06 | 电子科技大学 | A kind of microwave device for columnar object heating |
| CN108770107B (en) * | 2018-08-02 | 2024-04-19 | 电子科技大学 | Microwave device for heating columnar object |
| CN110859323A (en) * | 2018-08-08 | 2020-03-06 | 北京航天雷特机电工程有限公司 | Microwave cavity and electron cigarette |
| CN109496005A (en) * | 2018-11-23 | 2019-03-19 | 电子科技大学 | A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading |
| CN109496005B (en) * | 2018-11-23 | 2022-07-08 | 电子科技大学 | Microwave heating device based on loading of multifrequency multimode antenna |
| CN110191530A (en) * | 2019-05-28 | 2019-08-30 | 中国电子科技集团公司第十二研究所 | A kind of microwave radiation heating device |
| CN110191530B (en) * | 2019-05-28 | 2021-10-29 | 中国电子科技集团公司第十二研究所 | Microwave radiation heating device |
| CN112137167A (en) * | 2019-06-28 | 2020-12-29 | 北京航天雷特机电工程有限公司 | Microwave antenna and electronic cigarette |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170822 |
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| RJ01 | Rejection of invention patent application after publication |