CN110113833A - A kind of microwave radiation heating antenna component - Google Patents
A kind of microwave radiation heating antenna component Download PDFInfo
- Publication number
- CN110113833A CN110113833A CN201910451890.0A CN201910451890A CN110113833A CN 110113833 A CN110113833 A CN 110113833A CN 201910451890 A CN201910451890 A CN 201910451890A CN 110113833 A CN110113833 A CN 110113833A
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- China
- Prior art keywords
- outer conductor
- antenna module
- screw
- medium
- screw channel
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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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
The present invention discloses a kind of microwave radiation heating antenna component, is related to Pulse width device arts.The antenna module includes: tubular outer conductor open at one end, and the inner conductor fixed by branch chapelet and outer conductor support in outer conductor；Along the axial direction of the outer conductor, the outer conductor includes the screw channel of the outer surface in its side wall, the screw channel includes at least one screw pitch transition, and the antenna module can uniformly outside radiated electromagnetic wave, realization be evenly heated medium by the screw pitch transition of screw channel.
Description
Technical field
The present invention relates to Pulse width device arts.More particularly, to a kind of microwave radiation heating antenna group
Part.
Background technique
In the prior art, the microwave feed-in mode for Pulse width field is mostly one or more microwave feed-in mouths
10 are radiated.The microwave action object such as solid matters such as food 20 or material are presently mainly placed in resonant cavity or waveguide
Inside is handled object using the heating effect of microwave, and specific structure is as shown in Figure 1.Portion is due to microwave field in the cavity
It is unevenly distributed and will lead to medium heating unevenly.
Under normal conditions, in order to overcome the problems, such as microwave field distribution inhomogeneities, increase mould is taken inside microwave cavity
The modes such as formula blender, rotating media move medium relative to microwave electromagnetic field.When microwave transmits in lossy dielectric,WithWith factor e-αzDecaying, the loss of medium is bigger, and microwave penetration distance is smaller.In order to overcome microwave penetration limited distance
Limitation, improve the uniformity of heating, generally take reduce microwave action object volume mode.
In order to adapt to microwave energy engineering application demand, the microwave of 915MHz or 2450MHz frequency used at present cannot
Penetrate 1m3Or higher volume of medium, therefore it is impossible to meet require for traditional waveguide mouth feed-in mode.However increase electronic
Agitating device can reduce the reliability and service life of equipment significantly, improve the operating cost of equipment.Add to improve microwave
The uniformity of heat, improves the reliability of microwave equipment, reduces the use cost of microwave equipment, it is necessary in original structure basis
It is upper to carry out innovative change.
Summary of the invention
It is an object of the present invention to provide the microwave radiation heating antenna components that one kind can be evenly heated medium.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
A kind of microwave radiation heating antenna component, comprising: tubular outer conductor open at one end, and in outer conductor
Pass through the inner conductor that branch chapelet and outer conductor support are fixed；Along the axial direction of the outer conductor, the outer conductor packet
The screw channel through outer surface in its side wall is included, the screw channel includes at least one screw pitch transition, and the antenna module can
Pass through the uniform outside radiated electromagnetic wave of the screw pitch transition of screw channel.
Furthermore it is preferred that scheme be that the antenna module further includes the medium outer cylinder for being set in the outer conductor outer surface,
The medium outer cylinder is for preventing heated medium from entering inside antenna module.
Furthermore it is preferred that scheme be that the material of the medium outer cylinder is polytetrafluoroethylene (PTFE) or polyether-ether-ketone；Outside the medium
Cylinder with a thickness of 2-6mm.
Furthermore it is preferred that scheme be, from close to the outer conductor opening one end to far from the outer conductor be open one
End, the screw pitch of the screw pitch transition of the screw channel are gradually increased.
Furthermore it is preferred that scheme be that the screw pitch gradual manner of the screw pitch transition of the screw channel is linear gradient.
Furthermore it is preferred that scheme be that the screw channel in the outer conductor sidewall is processed by the way of coiling or Metal Cutting
Molding.
Furthermore it is preferred that scheme be that the inner conductor and the outer conductor are coaxial arrangement.
Furthermore it is preferred that scheme be that the material of the branch chapelet is polytetrafluoroethylene (PTFE).
Beneficial effects of the present invention are as follows:
Microwave radiation heating antenna component provided by the invention, antenna module can be inserted directly into the medium being heated
Portion increases the active area of antenna and medium.In addition, improved in terms of engineering is with microwave heating large volume medium significantly
Microwave heating medium is along the temperature unevenness of antenna module axial direction, while the Standard is simple and convenient to operate, controllably
Property strong, high reliablity.Relative to traditional production method, antenna module of the invention can increase substantially the reliable of equipment
Property, the service life of equipment is improved, the Energy in use of equipment is reduced, reduces the operating cost of equipment.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the structural schematic diagram of heating objects with microwaves common in the art.
Fig. 2 shows the structural schematic diagrams of microwave radiation heating antenna component of the present invention.
Fig. 3 shows in the inventive antenna component obtained using CST2010 software emulation electric field in antenna module axial direction side
To distribution map.
Description of symbols: 10, microwave feed-in mouth；20, food；1, outer conductor；11, screw channel；2, inner conductor；3, it supports
Son；4, medium outer cylinder.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
In the description of invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this hair
Bright limitation.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.Moreover, term " includes " or any other variant thereof is intended to cover non-exclusive inclusion, so that packet
The process, method, article or equipment for including a series of elements not only includes those elements, but also including being not explicitly listed
Other element, or further include for elements inherent to such a process, method, article, or device.Do not limiting more
In the case where, the element that is limited by sentence "including a ...", it is not excluded that including process, method, the object of the element
There is also other identical elements in product or equipment.
In the traditional microwave heating structure of the prior art, microwave can not be penetrated deeply to media interior, lead to media interior
It is significantly uneven with the temperature on surface, therefore conventional method does not adapt to (temperature more demanding to the temperature uniformity of entire medium
Difference is no more than ± 5 °) industry.The media property strong acid or highly basic being heated simultaneously, need to work under high pressure, high temperature, are
Overcome these defects, it is necessary to redesign a kind of structure of innovation.The present invention, which provides one kind, can be evenly heated the micro- of medium
Wave radiation heating antenna component.
It is described in detail with reference to the accompanying drawing.Fig. 2 shows the structural representations of microwave radiation heating antenna component of the present invention
Figure.Fig. 3 shows electric field dividing in antenna module axial direction in the inventive antenna component obtained using CST2010 software emulation
Butut.
As shown in Fig. 2, the present invention provides a kind of microwave radiation heating antenna component, comprising: outside tubular open at one end
Conductor 1, and fixed inner conductor 2 is supported by branch chapelet 3 and the outer conductor 1 in outer conductor 1, branch chapelet 3 is used
To support inner conductor 2 and outer conductor 1, the concentricity of guarantee inner conductor 2 and outer conductor 1；
Along the axial direction of the outer conductor 1, the outer conductor 1 includes the screw channel of the outer surface in its side wall
11, the screw channel 11 twist and along the axial direction of outer conductor 1 extends；The screw channel 11 include at least one screw pitch gradually
Become section, the antenna module can pass through the uniform outside radiated electromagnetic wave of the screw pitch transition of screw channel 11.Those skilled in the art can
With understanding, the screw channel 11 can be also possible to part and be set as screw pitch transition using whole installation as screw pitch transition.When
When a part of screw channel 11 is set as screw pitch transition, other places of screw channel 11 are then screw pitch homogeneous section.Above these types feelings
In condition, antenna module can pass through the screw pitch transition of screw channel 11 equably radiated electromagnetic wave outward.
It should be further noted that in order to make antenna module can be by the uniform outside radiated electromagnetic wave of screw channel 11, ability
Field technique personnel are it is understood that one to be open from one end that the close outer conductor 1 is open to the separate outer conductor 1
End, the screw pitch of the screw pitch transition of the screw channel 11 are gradually increased, and make the separate described outer of outer conductor 1 by the gradual change of screw pitch
The efficiency for one end radiated electromagnetic wave that conductor 1 is open, higher than one end radiation electric close to the outer conductor 1 opening of outer conductor 1
The efficiency of magnetic wave offsets loss when electromagnetic wave is propagated in inner conductor 2 with this, and then guarantees antenna module axially direction
The uniformity of upper outside radiated electromagnetic wave, can so improve microwave heating medium along the temperature of antenna module axial direction significantly
Spend inhomogeneities.
It is further preferred that the screw pitch gradual manner of the screw pitch transition of the screw channel 11 is linear gradient, the gradual change side
Formula is the optimal mode verified by many experiments.In actual design process, close to the one of the outer conductor 1 opening
The screw pitch of the screw channel 11 at end gradually transits to the screw channel of one end far from the outer conductor 1 opening by the way of linear gradient
11 screw pitch.
Preferably, the antenna module further includes the medium outer cylinder 4 for being set in 1 outer surface of outer conductor, the medium
Outer cylinder 4 can not only be penetrated by electromagnetic wave, and can be used for preventing heated medium from entering inside antenna module, while medium outer cylinder
4 must have certain thickness, it is preferable that the medium outer cylinder 4 with a thickness of 2-6mm；And medium outer cylinder 4 needs to bear for a long time
Pressure (within 10 atmospheric pressure), temperature (200 DEG C), resistance to strong acid, resistance to highly basic, material are preferably polytetrafluoroethylene (PTFE) or polyethers ether
Ketone.
In a preferred embodiment of the invention, the screw channel 11 on 1 side wall of outer conductor uses coiling or Metal Cutting
Mode machine-shaping, those skilled in the art can also select other suitable molding modes according to actual needs, the present invention
It is not further to this to be limited.
Preferably, the inner conductor 2 and the outer conductor 1 are coaxial arrangement, which is propped up by branch chapelet 3
Support maintenance, guarantees the electromagnetic transmission function of antenna module.Further, the material of the branch chapelet 3 is polytetrafluoroethylene (PTFE).
In a preferred embodiment of the invention, by the microwave cavity of 5 antenna modules provided by the invention insertion 10L
In vivo, the magnetron of 5 2450MHz output power 800W is connected, heating target is deionized water, automatically controls heating time 30
Minute makes water temperature be heated to 170 DEG C from 22 DEG C of room temperature, and heat preservation is for 24 hours.Inside cavity different parts place several temperature sensors, prison
The variation of water temperature in heating and insulating process is surveyed, test result shows that in radial maximum temperature difference be 10 DEG C, in axial maximum temperature
Difference is 5 DEG C.The temperature uniformity of test is substantially better than traditional microwave heating method.
In addition, in a preferred embodiment of the invention, also having obtained inventive antenna group using CST2010 software emulation
In part electric field antenna module axial direction distribution map, as shown in figure 3, as can be seen from the figure in entire microwave transmission direction
20% is differed only by between upper electric field strength maximum value.
Microwave radiation heating antenna component provided by the invention, antenna module can be inserted directly into the medium being heated
Portion increases the active area of antenna and medium.In addition, improved in terms of engineering is with microwave heating large volume medium significantly
Microwave heating medium is along the temperature unevenness of antenna module axial direction, while the Standard is simple and convenient to operate, controllably
Property strong, high reliablity.Relative to traditional production method, antenna module of the invention can increase substantially the reliable of equipment
Property, the service life of equipment is improved, the Energy in use of equipment is reduced, reduces the operating cost of equipment.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (8)
1. a kind of microwave radiation heating antenna component characterized by comprising tubular outer conductor open at one end, and be located at
The inner conductor fixed by branch chapelet and outer conductor support in outer conductor；
Along the axial direction of the outer conductor, the outer conductor includes the screw channel of the outer surface in its side wall, described
Screw channel includes at least one screw pitch transition, and the antenna module can pass through the uniform outside electromagnetic radiation of the screw pitch transition of screw channel
Wave.
2. antenna module according to claim 1, which is characterized in that the antenna module further includes being set in outside described to lead
The medium outer cylinder of external surface, the medium outer cylinder is for preventing heated medium from entering inside antenna module.
3. antenna module according to claim 2, which is characterized in that the material of the medium outer cylinder be polytetrafluoroethylene (PTFE) or
Polyether-ether-ketone；The medium outer cylinder with a thickness of 2-6mm.
4. antenna module according to claim 1, which is characterized in that from one end close to outer conductor opening to separate
One end of the outer conductor opening, the screw pitch of the screw pitch transition of the screw channel are gradually increased.
5. antenna module according to claim 4, which is characterized in that the screw pitch gradual change side of the screw pitch transition of the screw channel
Formula is linear gradient.
6. antenna module according to claim 1, which is characterized in that screw channel in the outer conductor sidewall using coiling or
The mode machine-shaping of Metal Cutting.
7. antenna module according to claim 1, which is characterized in that the inner conductor is coaxial set with the outer conductor
It sets.
8. antenna module according to claim 1, which is characterized in that the material of the branch chapelet is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451890.0A CN110113833A (en) | 2019-05-28 | 2019-05-28 | A kind of microwave radiation heating antenna component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451890.0A CN110113833A (en) | 2019-05-28 | 2019-05-28 | A kind of microwave radiation heating antenna component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110113833A true CN110113833A (en) | 2019-08-09 |
Family
ID=67492602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910451890.0A Pending CN110113833A (en) | 2019-05-28 | 2019-05-28 | A kind of microwave radiation heating antenna component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110113833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113180307A (en) * | 2021-04-28 | 2021-07-30 | 北京航天雷特机电工程有限公司 | Microwave antenna and electronic cigarette |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058151A (en) * | 1990-08-09 | 1992-01-29 | 天津大学 | Screw medical microwave radiator |
| CN1093606A (en) * | 1994-01-22 | 1994-10-19 | 湖南省生物研究所 | Microwave radiometer |
| CN2482390Y (en) * | 2001-07-12 | 2002-03-20 | 中国人民解放军第二军医大学 | Strong helical punching microwave radiating antenna |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| US8179327B1 (en) * | 2009-09-25 | 2012-05-15 | The United States Of America, As Represented By The Secretary Of The Navy | Subsurface deployable antenna array |
| CN206228422U (en) * | 2016-08-10 | 2017-06-09 | 云南科威液态金属谷研发有限公司 | Heat therapy microwave antenna |
-
2019
- 2019-05-28 CN CN201910451890.0A patent/CN110113833A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058151A (en) * | 1990-08-09 | 1992-01-29 | 天津大学 | Screw medical microwave radiator |
| CN1093606A (en) * | 1994-01-22 | 1994-10-19 | 湖南省生物研究所 | Microwave radiometer |
| CN2482390Y (en) * | 2001-07-12 | 2002-03-20 | 中国人民解放军第二军医大学 | Strong helical punching microwave radiating antenna |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| US8179327B1 (en) * | 2009-09-25 | 2012-05-15 | The United States Of America, As Represented By The Secretary Of The Navy | Subsurface deployable antenna array |
| CN206228422U (en) * | 2016-08-10 | 2017-06-09 | 云南科威液态金属谷研发有限公司 | Heat therapy microwave antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113180307A (en) * | 2021-04-28 | 2021-07-30 | 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 | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190809 |