CN202503690U - Microwave heating equipment excitation cavity - Google Patents
Microwave heating equipment excitation cavity Download PDFInfo
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- CN202503690U CN202503690U CN2011205380738U CN201120538073U CN202503690U CN 202503690 U CN202503690 U CN 202503690U CN 2011205380738 U CN2011205380738 U CN 2011205380738U CN 201120538073 U CN201120538073 U CN 201120538073U CN 202503690 U CN202503690 U CN 202503690U
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- cavity
- microwave
- heating equipment
- microwave heating
- waveguide
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Abstract
The utility model relates to a microwave heating equipment excitation cavity comprising a cavity, which is internally provided with a waveguide, which is internally provided with a rectangular cavity; a magnetron mounting hole and a magnetron antenna insertion opening are arranged on the cavity; and a microwave lead-out port is arranged at the bottom of the cavity. The microwave heating equipment excitation cavity provided by the utility model is small in microwave energy attenuation and high in transmission efficiency, stationary wave is greatly reduced, the inner wall of the excitation cavity is kept clean, conductivity is good and high-frequency ignition can be avoided, and the microwave heating equipment excitation cavity can be widely applied in microwave drying, microwave baking and sterilizing, microwave treatment in metal smelting and other fields.
Description
Technical field
The utility model relates to a kind of microwave heating equipment excitation cavity.
Background technology
The core component of microwave equipment is magnetron and excitation cavity, and magnetron is installed on the excitation cavity, and magnetron antenna inserts in the excitation cavity, and the microwave of magnetron emission retrains in excitation cavity and reflects the direct-drive transmission system.Excitation cavity is the energy exciting bank, is again the part of transmission waveguide, so waveguide (waveguide) is to be used for the structure of guide electromagnetic waves.Its performance is very big to the work influence of magnetron, and excitation cavity should be able to effectively be transferred to load with the microwave energy that magnetron produces.Electromagnetic field in the conductance of excitation cavity wall very high (generally process with metals such as copper, aluminium, inwall is coated with silver or gold sometimes), waveguide distributes and can combine the boundary condition of waveguide to find the solution by the Maxwell equation group.
At present; Topmost form is waveguide of rectangle excitation cavity and two kinds of circle excitation cavity waveguides in practical application; Rectangle excitation cavity wave guide applications is in fields such as micro-wave drying, microwave baking sterilization, metal smelt Microwave Treatment, and the decay of the microwave energy of present rectangle excitation cavity waveguide is big, and efficiency of transmission is lower; For example commercially available aluminium excitation cavity, the microwave transmission attenuation of basic frequency 2450MHz surpasses 0.024dB/m; 0.5dB/100ft, owing to, make the propagation of microwave exist serious dispersion phenomenon in the excitation cavity not through optimal design; And have unlimited multiple electromagnetism field structure or distribution, it is serious to annotate ripple, even the high frequency sparking; And can cause that moding of a magnetron and negative electrode are overheated, can damage pipe when serious.
The utility model content
The primary and foremost purpose of the utility model is to provide a kind of microwave energy decay little, the microwave heating equipment excitation cavity that efficiency of transmission is high, and the concrete scheme of the utility model is following:
A kind of microwave heating equipment excitation cavity comprises cavity, is provided with waveguide in the said cavity, and said waveguide inside has rectangular enclosure; Said cavity is provided with the magnetron installing hole, magnetron antenna inserts mouth; Said cavity bottom is provided with the microwave export mouth.
Preferably, said cavity top is provided with the air-vent more than 1 or 1.
Preferably, the direction of said magnetron antenna insertion mouth is vertical with the direction of said microwave export mouth.
Preferably, said magnetron antenna inserts mouth and is provided with copper band.
Preferably, the rectangular enclosure of said waveguide is long to be 95.3mm, and wide is 54.6mm; Said magnetron antenna inserts mouthful said cavity of a centre distance top 18.6mm.
Preferably, said waveguide wall thickness is 2mm.
Preferably, said waveguide both sides are extended with the wing plate, and said magnetron installing hole is located on the said wing plate.
Preferably, the thickness of said wing plate is greater than the wall thickness of said waveguide.
The microwave heating equipment excitation cavity that the utility model provides is lower than 0.013dB/m through test microwave transmission attenuation; 0.4dB/100ft, reach the efficient energy transmission.Guarantee the vertical smooth waveguide of each face of excitation cavity, the bright and clean high conductivity of inwall, greatly degree has reduced the notes ripple, at excitation cavity air-vent is set and makes the equipment work process get into the gas and the smog discharge of excitation cavity, and the excitation cavity inwall is kept clean; Magnetron antenna insertion mouth at excitation cavity is provided with copper band; The good contact of excitation cavity and magnetron copper wire gauze pad when guarantee installing; Make conduction well avoid the high frequency sparking; With magnetron coupling steady operation, bring into play its proper efficiency and working life, can be widely used in fields such as microwave drying, microwave baking sterilization, metal smelt Microwave Treatment.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, does not constitute the improper qualification to the utility model, in the accompanying drawings:
Fig. 1 is the utility model embodiment installation diagram;
Fig. 2 is the utility model example structure sketch map.
Embodiment
To combine accompanying drawing and specific embodiment to specify the utility model below, be used for explaining the utility model in the illustrative examples and the explanation of this utility model, but not as the qualification to the utility model.
Embodiment
Like Fig. 1～shown in Figure 2, the microwave heating equipment excitation cavity, it is provided with cavity; Be provided with waveguide 1 in the cavity, be extruded into section bar by precision die, the inside of waveguide 1 has rectangular enclosure; Waveguide 1 wall thickness is 2mm, and the transversal face length of the rectangular enclosure of waveguide 1 is 95.3mm, and wide is 54.6mm; It is the microwave export mouth that waveguide 1 bottom is provided with opening, and waveguide 1 both sides are extended with wing plate 11, is respectively equipped with magnetron installing hole 12 on the wing plate 11 of both sides; Wing plate 11 thickness are greater than waveguide 1 wall thickness, are used for coupling punching supporting magnetron, are provided with magnetron antenna from the downward 18.6mm in rectangular enclosure top of waveguide 1 and insert mouth 13; Magnetron antenna inserts the middle part that mouth 13 is positioned at the rectangular enclosure length direction, and the direction of magnetron antenna insertion mouth 13 is vertical with the direction of microwave export mouth, below waveguide 1, is provided with flange base plate 3; Flange base plate 3 middle parts are provided with through hole, shape of through holes and rectangular enclosure external cross section form fit, and the edge of flange base plate 3 is provided with base plate installing hole 31.
As the improvement of the foregoing description scheme, micropore top board 4 is adopted on waveguide 1 top, and micropore top board 4 is provided with 1 or the air-vent 41 more than 1, and the gas and the smog that make the equipment work process get into excitation cavity are discharged, and the excitation cavity inwall is kept clean.
Improvement as the foregoing description scheme; Magnetron installing hole 12 places are provided with the copper band 2 of coupling, and good contact of excitation cavity and magnetron copper wire gauze pad makes conduction well avoid high frequency to strike sparks when guarantee installing; With magnetron coupling steady operation, bring into play its proper efficiency and working life.
More than technical scheme that the utility model embodiment is provided carried out detailed introduction; Used concrete example among this paper principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (8)
1. a microwave heating equipment excitation cavity comprises cavity, it is characterized in that:
Be provided with waveguide in the said cavity, said waveguide inside has rectangular enclosure;
Said cavity is provided with the magnetron installing hole, magnetron antenna inserts mouth;
Said cavity bottom is provided with the microwave export mouth.
2. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
Said cavity top is provided with the air-vent more than 1 or 1.
3. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
The direction of said magnetron antenna insertion mouth is vertical with the direction of said microwave export mouth.
4. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
Said magnetron antenna inserts mouth and is provided with copper band.
5. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
The rectangular enclosure of said waveguide is long to be 95.3mm, and wide is 54.6mm;
Said magnetron antenna inserts mouthful said cavity of a distance top 18.6mm.
6. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
Said waveguide wall thickness is 2mm.
7. microwave heating equipment excitation cavity as claimed in claim 1 is characterized in that:
Said waveguide both sides are extended with the wing plate, and said magnetron installing hole is located on the said wing plate.
8. microwave heating equipment excitation cavity as claimed in claim 7 is characterized in that:
The thickness of said wing plate is greater than the wall thickness of said waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205380738U CN202503690U (en) | 2011-12-20 | 2011-12-20 | Microwave heating equipment excitation cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205380738U CN202503690U (en) | 2011-12-20 | 2011-12-20 | Microwave heating equipment excitation cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503690U true CN202503690U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205380738U Expired - Fee Related CN202503690U (en) | 2011-12-20 | 2011-12-20 | Microwave heating equipment excitation cavity |
Country Status (1)
| Country | Link |
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| CN (1) | CN202503690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929110A (en) * | 2012-11-06 | 2013-02-13 | 中国科学院微电子研究所 | Device and method for supercritical drying of microwave excitation |
-
2011
- 2011-12-20 CN CN2011205380738U patent/CN202503690U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929110A (en) * | 2012-11-06 | 2013-02-13 | 中国科学院微电子研究所 | Device and method for supercritical drying of microwave excitation |
| CN102929110B (en) * | 2012-11-06 | 2014-03-19 | 中国科学院微电子研究所 | Device and method for supercritical drying of microwave excitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20131220 |