CN211019303U - Microwave feed-in structure - Google Patents
Microwave feed-in structure Download PDFInfo
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- CN211019303U CN211019303U CN201922332522.2U CN201922332522U CN211019303U CN 211019303 U CN211019303 U CN 211019303U CN 201922332522 U CN201922332522 U CN 201922332522U CN 211019303 U CN211019303 U CN 211019303U
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- microwave
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- antenna array
- waveguide tube
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- 238000001816 cooling Methods 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims 2
- 238000001035 drying Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Constitution Of High-Frequency Heating (AREA)
Abstract
The microwave feed-in structure comprises a microwave generator and a waveguide tube, wherein the microwave generator is communicated with the waveguide tube, and a slot antenna array is arranged on the waveguide tube. The utility model discloses a set up gap antenna array on the waveguide pipe, reduce the standing-wave ratio, promote drying efficiency and reduce manufacturing cost, energy saving consumption.
Description
Technical Field
The utility model relates to a microwave feed-in structure.
Background
The microwave heating is different from a general heat conduction heating mode, directly acts on an object, selectively heats, and has the characteristics of high temperature rise speed, uniform heating and the like.
CN201772698U, 03.23.2011, discloses a microwave and hot air mixed glass fiber dryer, which comprises a furnace body, a drying cavity arranged in the furnace body, a hot air circulating system, a moisture discharging system, a microwave generating source and a creel conveying track arranged at the bottom of the drying cavity; the microwave generating source is connected with microwave energy feeding ports arranged in the oven body through microwave waveguides, and each microwave waveguide is connected with two or more microwave energy feeding ports. It has the following disadvantages: the microwave energy feedback port is an independent part, the manufacturing precision and the manufacturing cost are high, and the radiation microwave energy is not uniform; if the positions and the number of the energy feedback ports are not designed reasonably, the energy feedback conversion efficiency is low, the standing wave ratio is large, the reflection power is high, the service life of a microwave generator is seriously influenced, and meanwhile, the microwave energy acting on materials is insufficient due to the fact that the energy is reflected back to the generator, and the drying efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a microwave feed-in structure is provided, which can improve the drying efficiency and reduce the manufacturing cost, and has high conversion efficiency.
The utility model provides a technical scheme that its technical problem adopted is: a microwave feed-in structure comprises a microwave generator and a waveguide tube, wherein the microwave generator is communicated with the waveguide tube, and a slot antenna array is arranged on the waveguide tube.
Further, the slot antenna array on the waveguide tube is a longitudinal offset slot array, a transverse slot array or a central inclined slot array and the like. The slot antenna array can calculate the specific position of each slot through an Hfss simulation system.
Furthermore, the size width of the gap antenna array is 6-20mm, and the length of the gap antenna array is 30-90 mm.
Further, the slot antenna array is arranged on the wide surface or the narrow surface of the waveguide tube.
Further, the microwave generator comprises a magnetron, an excitation cavity and a power supply, and the magnetron, the excitation cavity and the power supply are integrated in a shell.
Furthermore, a magnetron of the microwave generator is designed in an air cooling or water cooling mode.
The microwave frequency conversion power supply is used for driving the magnetron to emit microwaves, the microwave power is adjustable, the applicability is stronger, the power can be automatically adjusted according to the temperature through the PID control of P L C, and the intelligent control is realized.
The utility model has the advantages that:
by arranging the slot antenna array on the waveguide tube, the standing-wave ratio is reduced, the drying efficiency is improved, the manufacturing cost is reduced, and the energy consumption is saved; furthermore, a magnetron, an excitation cavity and a power supply of the microwave generator are integrated in a shell, so that the potential safety hazard that equipment maintenance personnel touch a high-voltage wire terminal in the overhauling process can be avoided, and the manufacturing material and installation labor cost is reduced.
Drawings
Fig. 1 is a schematic perspective view of a microwave feeding structure in embodiment 1 of the present invention;
FIG. 2 is a front view of the microwave feed structure of FIG. 1;
FIG. 3 is a side view of the microwave feed structure of FIG. 1;
FIG. 4 is a schematic diagram of a waveguide slot antenna array arrangement of the microwave feed structure of FIG. 1, a second transverse slot array;
fig. 5 is a schematic diagram of a waveguide slot antenna array scheme of the microwave feed structure of fig. 1, a three-center tilted slot array;
in the figure: 1. microwave generator, 2 waveguide tube, 2-1 waveguide slot antenna radiation array.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Examples
Referring to fig. 1-3, a microwave feeding structure includes a microwave generator 1 and a waveguide 2, where the microwave generator 1 is connected to the waveguide 2, and the waveguide 2 is provided with a slot antenna array 2-1.
The slot antenna array 2-1 is arranged on the wide surface of the waveguide tube 2 and is a longitudinal offset slot array. Of course, other forms such as a transverse slot array (as shown in fig. 4) or a central oblique slot array (as shown in fig. 5) can be designed. The slot antenna array can calculate the specific position of each slot through an Hfss simulation system. The slot size of the slot antenna array is 10mm in width and 60mm in length.
The microwave generator 1 comprises a magnetron, an excitation cavity and a power supply, and the magnetron, the excitation cavity and the power supply are integrated in a shell.
The magnetron of the microwave generator 1 is designed to be air-cooled or water-cooled.
The power supply of the microwave generator 1 is a digital variable-frequency microwave power supply designed by air cooling, water cooling, oil-immersed water cooling or oil-immersed air cooling, the microwave variable-frequency power supply is used for driving a magnetron to emit microwaves, the microwave power is adjustable, the applicability is stronger, and the power can be automatically adjusted according to the temperature through PID control of P L C, so that intelligent control is realized.
The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and the present invention is to be modified immaterial by this concept, which all shall belong to the protection scope of the present invention.
Claims (7)
1. Microwave feed-in structure, including microwave generator and waveguide tube, its characterized in that: the microwave generator is communicated with the waveguide tube, and the waveguide tube is provided with a slot antenna array.
2. A microwave feed-in structure according to claim 1, wherein: the slot antenna array on the waveguide tube is a longitudinal offset slot array, a transverse slot array or a central inclined slot array.
3. A microwave feed-in structure according to claim 2, wherein: the slot size of the slot antenna array is 6-20mm in width and 30-90mm in length.
4. A microwave feed-in structure according to claim 1 or 2, characterized in that: the slot antenna array is arranged on the wide surface or the narrow surface of the waveguide tube.
5. A microwave feed-in structure according to claim 1 or 2, characterized in that: the microwave generator comprises a magnetron, an excitation cavity and a power supply, wherein the magnetron, the excitation cavity and the power supply are integrated in a shell.
6. A microwave feed-in structure according to claim 5, wherein: the magnetron of the microwave generator is designed in an air cooling or water cooling mode.
7. A microwave feed-in structure according to claim 5, wherein: the power supply of the microwave generator is a digital variable frequency microwave power supply designed by air cooling, water cooling, oil immersion and water cooling or oil immersion and air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922332522.2U CN211019303U (en) | 2019-12-23 | 2019-12-23 | Microwave feed-in structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922332522.2U CN211019303U (en) | 2019-12-23 | 2019-12-23 | Microwave feed-in structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211019303U true CN211019303U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922332522.2U Active CN211019303U (en) | 2019-12-23 | 2019-12-23 | Microwave feed-in structure |
Country Status (1)
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| CN (1) | CN211019303U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868771A (en) * | 2019-12-23 | 2020-03-06 | 湖南微朗科技有限公司 | A microwave feeding structure |
| CN115560546A (en) * | 2022-10-12 | 2023-01-03 | 苏州子高科技有限公司 | Tunnel type microwave equipment |
| CN118017237A (en) * | 2024-04-08 | 2024-05-10 | 陕西达昊华建筑工程有限公司 | A traveling waveguide slot array antenna and a method of using the same |
-
2019
- 2019-12-23 CN CN201922332522.2U patent/CN211019303U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868771A (en) * | 2019-12-23 | 2020-03-06 | 湖南微朗科技有限公司 | A microwave feeding structure |
| CN115560546A (en) * | 2022-10-12 | 2023-01-03 | 苏州子高科技有限公司 | Tunnel type microwave equipment |
| CN118017237A (en) * | 2024-04-08 | 2024-05-10 | 陕西达昊华建筑工程有限公司 | A traveling waveguide slot array antenna and a method of using the same |
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