CN113889389B - Rectangular column magnetron tube core - Google Patents
Rectangular column magnetron tube core Download PDFInfo
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- CN113889389B CN113889389B CN202111149825.6A CN202111149825A CN113889389B CN 113889389 B CN113889389 B CN 113889389B CN 202111149825 A CN202111149825 A CN 202111149825A CN 113889389 B CN113889389 B CN 113889389B
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- anode
- rectangular
- magnetron
- cylinder
- metal layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/04—Cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/027—Collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/18—Resonators
Abstract
The invention discloses a rectangular columnar magnetron tube core, and belongs to the technical field of microwave sources in vacuum electronic devices. The magnetron die includes an anode component, a cathode component, an input component, and an output component; the cathode structure is transversely stretched, the surface area of the cathode is increased, meanwhile, the shape of the anode cylinder is changed into a rectangular cylinder, the section size is reduced, the structural diversification of the magnetron is realized, and the magnetron can be suitable for different working scenes.
Description
Technical Field
The invention belongs to the technical field of microwave sources in vacuum electronic devices, and particularly relates to a rectangular cylindrical magnetron tube core.
Background
With the development of electronic technology, semiconductor devices have advantages over electric vacuum devices in low power, low frequency and low voltage, but magnetrons still have absolute advantages in the application of high-power electric vacuum devices, and are widely applied in various fields such as military equipment, medical equipment, industrial and agricultural facilities, microwave ovens and the like.
The development trend of the magnetron for the microwave oven is low voltage, miniaturization and rectangularity. However, the conventional magnetron tube core is cylindrical as a whole, has a large volume and cannot be suitable for different application scenes. Therefore, in order to meet the trend of development of the magnetron and to promote miniaturization and diversification of the microwave oven, it is required to research a magnetron capable of operating at a conventional voltage and having various external structures while maintaining a sufficient output power.
In the invention patent with the application number of 201910961937.8, a magnetron tube core for a rectangular microwave oven is disclosed, but the structure still has the problem of overhigh section.
Disclosure of Invention
Aiming at the defects of the existing magnetron in diversified development, the invention provides a rectangular columnar magnetron tube core. The magnetron tube core is improved in the rectangular microwave oven in the background technology, the cathode structure is transversely stretched, the surface area of the cathode is increased, and meanwhile, the appearance of the anode cylinder is changed into a rectangular cylinder shape, so that the magnetron tube core can be suitable for different application scenes.
The technical scheme adopted by the invention is as follows:
a magnetron die of rectangular columnar shape, comprising: an anode part, a cathode part, an input part and an output part;
the anode member includes: the anode cylinder, the blades, the diaphragm band, the pole shoe at the A side and the pole shoe at the K side;
the cathode assembly includes: a hot cathode emitter, upper and lower end caps, a central support rod and an edge support rod;
the upper and lower end caps comprise: an upper end cap and a lower end cap;
the output section includes: an output antenna;
the input component is fixedly connected with one end of the anode cylinder; the output component is fixedly connected with the other end of the anode cylinder;
the output antenna extends into the anode cylinder from the inside of the output part and is fixedly connected with the blade;
the side supporting rod is arranged in the input component, and the side supporting rod, the upper end cap, the hot cathode emitter and the lower end cap are fixedly connected in sequence;
the central supporting rod is arranged in the input part, one end of the central supporting rod extends into a cavity formed by the hot cathode emitter and is fixedly connected with the lower end cap;
the A-side pole shoe is arranged in an open end on one side of the anode cylinder where the output component is located;
the K-side electrode shoe is arranged in an open end on one side of the anode cylinder where the input component is located;
the anode cylinder is a rectangular cylinder, and an anode metal layer with uniform thickness is arranged in the anode cylinder;
a columnar cavity which is communicated from top to bottom is hollowed in the middle of the anode metal layer, and a hot cathode emitter is placed in the columnar cavity; the hot cathode emitter is a spiral filament, the sizes of the cross sections of the inner cavities of the hot cathode emitter along the axial direction are the same, and the cross section is in a shape that two short sides of a rectangle are respectively connected with a semicircular runway;
two parallel rows of rectangular resonant cavity arrays are further hollowed in the anode metal layer, each row of rectangular resonant cavity arrays comprises N rectangular resonant cavities which are communicated from top to bottom and have the same size, a rectangular anode blade is arranged between every two adjacent rectangular resonant cavities, and the value range of N is 3-5.
Furthermore, the mold separation belt is a double-end double-ring mold separation belt, the mold separation belt is in a track shape, a certain distance is reserved between the outer wall of the large mold separation belt and the anode metal layer, and the inner wall of the small annular mold separation belt is attached to the anode metal layer.
Furthermore, the output antenna is connected with two rectangular anode blades arranged at the center of the array of the resonant cavities.
Furthermore, the thickness of the metal layer is 2-3 mm.
The invention provides a magnetron structure with a rectangular cylindrical resonant cavity, wherein the working frequency of a pi mode of the magnetron is 5.8Ghz, the output power of the magnetron in the working voltage range of 4-7 kV of the working frequency of 5.8Ghz is 700-1500W, and the output power is similar to that of the existing magnetron; meanwhile, the cross section of the adopted resonant cavity is rectangular, so that the section size is reduced, the structural diversification of the magnetron is realized, and the magnetron can be suitable for different working scenes.
Drawings
FIG. 1 is an external view of a magnetron die according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a magnetron tube core along a diagonal plane inside a rectangular cavity of an anode cylinder in accordance with an embodiment of the present invention;
FIG. 3 is a schematic three-dimensional structure of a magnetron resonator according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a three-dimensional structure of a magnetron resonator according to an embodiment of the present invention.
Wherein: 1. an anode cylinder; 2. a blade; 3-1, a small diaphragm band; 3-2, large diaphragm zone; 4. a K-side pole shoe; 5. an A-side pole shoe; 6. an input section; 7. upper and lower end caps; 8. an edge support bar; 9. a central strut; 10. a hot cathode emitter; 11. an output antenna; 12. and an output component.
Detailed Description
As shown in fig. 1-2, a magnetron core of a rectangular column shape of the present embodiment includes: a cathode part, an anode part, an input part and an output part; the input part is fixedly connected with one end of the anode part, the output part is fixedly connected with the other end of the anode part, and the cathode part is positioned in the input part and the anode part.
A rectangular pillar magnetron die comprising: anode part, cathode part, input part and output part.
The anode member includes: the anode cylinder, the blade, the diaphragm strip, the pole shoe on the A side and the pole shoe on the K side.
The cathode assembly includes: hot cathode emitter, upper and lower end caps, center support rod and edge support rod.
The upper and lower end caps comprise: an upper end cap and a lower end cap.
The output section includes: and outputting the antenna.
The input component is fixedly connected with one end of the anode cylinder; the output component is fixedly connected with the other end of the anode cylinder.
And the output antenna extends into the anode cylinder from the inside of the output part and is fixedly connected with the blade closest to the axis.
The edge supporting rod is arranged in the input component, and the edge supporting rod, the upper end cap, the hot cathode emitter and the lower end cap are fixedly connected in sequence.
The central supporting rod is arranged in the input component, one end of the central supporting rod extends into a cavity formed by the hot cathode emitter and is fixedly connected with the lower end cap.
The A-side pole shoe is installed in the open end of one side of the anode cylinder where the output component is located.
The K-side pole shoe is installed in the open end of one side of the anode cylinder where the input component is located.
The anode cylinder is a rectangular cylinder, and an anode metal layer with the thickness of 8.8mm is arranged in the anode cylinder.
A columnar cavity which is communicated from top to bottom is hollowed in the middle of the anode metal layer, and a hot cathode emitter is placed in the columnar cavity; the hot cathode emitter is a spiral filament, the size of the cross section of an internal cavity of the hot cathode emitter along the axial direction is the same, the cross section is in a shape of a semicircular runway connected with two short sides of a rectangle, and a columnar structure is taken as an example of a cathode in the attached drawing.
Two rows of parallel rectangular resonant cavity arrays are further hollowed in the anode metal layer, each row of rectangular resonant cavity arrays comprises 6 rectangular resonant cavities which are communicated from top to bottom and have the same size, and a rectangular anode blade is arranged between every two adjacent rectangular resonant cavities.
The diaphragm band is a double-end double-ring diaphragm band, the diaphragm band is in a track shape, a certain distance is reserved between the outer wall of the large diaphragm band and the anode metal layer, and the inner wall of the small annular diaphragm band is attached to the anode metal layer.
The important dimensional parameters are as shown in fig. 3 and 4, the outer length b of the anode cylinder is 54mm, the inner length c is 52mm, the outer width b1 is 26mm, and the inner width c1 is 24mm; the width g of the rectangular resonant cavity is 2mm, the width f of the rectangular blade is 2mm, and the length p of the rectangular blade along the central axis direction of the anode cylinder is 8.8mm; the height h of the double-end double-ring mold separation belt is 1.6mm, the double-end double-ring mold separation belt and the blades are connected in a staggered manner or have a certain interval, and the interval is 0.65mm; the outer diameter d of the large diaphragm band is 10.76mm, and the inner diameter e is 10.06mm; the outer diameter d1 of the small diaphragm zone is 8.05mm, and the inner diameter e1 is 7.35mm; the annular hot cathode emitter has an axial length n of 10.0mm, a diameter k of 4mm, and a spacing of 4.4mm from the anode metal layer.
The current flows in from the central support rod, flows through the hot cathode emitter and flows out along the side support rods; under the conditions that a hot cathode emitter generates heat, high voltage is applied between an anode and a cathode, and a static magnetic field is applied, electrons are generated to do work in an interaction space formed between the blades and the cathode structure, meanwhile, the electrons and a pi mode of a high-frequency field generated by the blade periodic structure interact with each other to exchange energy to the high-frequency field, energy exchange is realized, the electrons strike on the blades, and finally, the high-frequency electromagnetic field is led out through an output antenna on the blades.
Claims (4)
1. A rectangular pillar magnetron die comprising: an anode part, a cathode part, an input part and an output part;
the anode member includes: the anode cylinder, the blades, the diaphragm band, the pole shoe at the A side and the pole shoe at the K side;
the cathode member includes: a hot cathode emitter, upper and lower end caps, a central support rod and an edge support rod;
the upper and lower end caps comprise: an upper end cap and a lower end cap;
the output section includes: an output antenna;
the input component is fixedly connected with one end of the anode cylinder; the output component is fixedly connected with the other end of the anode cylinder;
the output antenna extends into the anode cylinder from the inside of the output part and is fixedly connected with the blade;
the side supporting rod is arranged in the input component, and the side supporting rod, the upper end cap, the hot cathode emitter and the lower end cap are fixedly connected in sequence;
the central supporting rod is arranged in the input part, one end of the central supporting rod extends into a cavity formed by the hot cathode emitter and is fixedly connected with the lower end cap;
the A-side pole shoe is arranged in an open end on one side of the anode cylinder where the output component is located;
the K-side electrode shoe is arranged in an open end on one side of the anode cylinder where the input component is located;
the anode cylinder is a rectangular cylinder, and an anode metal layer with uniform thickness is arranged in the anode cylinder;
a columnar cavity which is communicated from top to bottom is hollowed in the middle of the anode metal layer, and a hot cathode emitter is placed in the columnar cavity; the hot cathode emitter is a spiral filament, the sizes of the cross sections of the inner cavities of the hot cathode emitter along the axial direction are the same, and the cross section is in a shape that two short sides of a rectangle are respectively connected with a semicircular runway;
two parallel rows of rectangular resonant cavity arrays are further hollowed in the anode metal layer, each row of rectangular resonant cavity arrays comprises N rectangular resonant cavities which are communicated from top to bottom and have the same size, a rectangular anode blade is arranged between every two adjacent rectangular resonant cavities, and the value range of N is 3-5.
2. The magnetron tube core in a rectangular column shape as claimed in claim 1, wherein the mold separation band has two ends and two rings, and is shaped like a racetrack, wherein a certain space is provided between the outer wall of the large mold separation band and the anode metal layer, and the inner wall of the small ring-shaped mold separation band is attached to the anode metal layer.
3. A magnetron die of rectangular cylindrical shape as claimed in claim 2 wherein said output antenna is connected to two rectangular anode vanes disposed at the center of an array of resonant cavities.
4. The magnetron die of claim 2, wherein said metal layer has a thickness of 2 to 3mm.
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| CN202111149825.6A CN113889389B (en) | 2021-09-29 | 2021-09-29 | Rectangular column magnetron tube core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111149825.6A CN113889389B (en) | 2021-09-29 | 2021-09-29 | Rectangular column magnetron tube core |
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| CN113889389A CN113889389A (en) | 2022-01-04 |
| CN113889389B true CN113889389B (en) | 2023-04-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114843161B (en) * | 2022-04-18 | 2023-05-09 | 电子科技大学 | Runway-shaped magnetron tube core |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110660632A (en) * | 2019-10-11 | 2020-01-07 | 电子科技大学 | Magnetron tube core for rectangular microwave oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB9723478D0 (en) * | 1997-11-07 | 1998-01-07 | Eev Ltd | Magnetrons |
| WO2011022643A2 (en) * | 2009-08-21 | 2011-02-24 | The Regents Of The University Of Michigan | Crossed field device |
| JP2014067615A (en) * | 2012-09-26 | 2014-04-17 | Hitachi Power Solutions Co Ltd | Magnetron |
| CN108091532B (en) * | 2017-12-19 | 2020-03-17 | 广东威特真空电子制造有限公司 | Magnetron |
| CN110534386B (en) * | 2019-09-05 | 2020-06-23 | 电子科技大学 | Magnetron for axial double-structure double-frequency output microwave oven |
| CN111739773B (en) * | 2020-06-24 | 2021-12-03 | 电子科技大学 | Miniaturized magnetron structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110660632A (en) * | 2019-10-11 | 2020-01-07 | 电子科技大学 | Magnetron tube core for rectangular microwave oven |
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