CN102820195B - The antenna seal cover of magnetron - Google Patents
The antenna seal cover of magnetron Download PDFInfo
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- CN102820195B CN102820195B CN201110150104.7A CN201110150104A CN102820195B CN 102820195 B CN102820195 B CN 102820195B CN 201110150104 A CN201110150104 A CN 201110150104A CN 102820195 B CN102820195 B CN 102820195B
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- seal cover
- antenna
- cover
- wall
- magnetron
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
A kind of antenna seal cover of magnetron, surrounded by cover wall and formed, it is arranged at the positive pole shell upper of magnetron, and it is internally formed top seal room in cover wall, on antenna seal cover top, antenna outlet is set, the cover wall of antenna seal cover upper end is uniformly bent to form covering tegmental wall to the peripheral direction of antenna seal cover, and forms antenna outlet in cover wall and covering tegmental wall junction, and covering tegmental wall outwards extends and forms the gasket rings of ring-type.Gasket rings shelters from the space at upper casing intermediate throughholes place, when magnetron works, the shield portions of gasket rings can effectively prevent the leakage of microwave, owing to gasket rings and antenna seal cover are made of one piece, gap is not had between gasket rings and antenna seal cover, so avoiding the probability of microwave leakage between gasket rings and antenna seal cover, make magnetron relatively reliable, reduce the high-frequency harmonic adverse effect to surrounding body and electric elements when magnetron works.
Description
Technical field
The invention belongs to the technical field of magnetron, be specifically related to a kind of gasket rings with integrative-structure, thus preventing microwave leakage, simplification of flowsheet, reduces the antenna seal cover of the magnetron of production cost.
Background technology
Fig. 1 is the magnetron structures longitudinal section of prior art；Fig. 2 is the structural representation of magnetron antenna seal cover in prior art；Fig. 3 is the structural representation of prior art middle washer ring；Fig. 4 is the sectional view of prior art middle washer ring；Fig. 5 is the sectional view of magnetron antenna seal cover and gasket rings combination in prior art.
As shown in Figures 1 to 5, magnetron mainly includes: anelectrode portion；Negative electrode portion；Magnetic pole piece；Microwave emission portion.Anelectrode portion, by the positive pole shell 11 of barrel shape, is formed with multiple radial blade 12 on the inwall of positive pole shell 11, blade welds in lower groove inner and outer ring and constitutes.
Negative electrode portion includes on center shaft by W(tungsten) and TH(thorium) formed spiral-shaped of element thermionic filament 13 can be radiated；The action space 14 making thermoelectron rotate is formed between the end and filament 13 of blade 12；In order to prevent the thermoelectron radiating out from filament 13 from departing from from central shaft above-below direction, form upper seal 15 and lower seal 16 in the top and bottom of filament 13；For filament supports 13 and introducing power supply, devise through lower seal 16 and connect the filament central authorities guide rod 17 of upper seal 15 and be concomitantly introduced into power supply with central guide rod 17 and be connected the side guide rod 18 of lower seal 16.
Magnetic pole piece includes the top and bottom being fixed on positive pole shell 11 and the upper magnetic pole 20 that can form magnetic flux, lower magnetic pole 21；In order to be able to make formation magnetic field on action space 14, Magnet 22 is installed in the lower end of the upper end of upper magnetic pole 20 and lower magnetic pole 21.
Additionally, also have through ceramic component 31 and connect filament central authorities guide rod 17 one end and side guide rod 18 one end is filtered the filter coil 32 of function；Connect filter coil 32, and be connected across both ends of power and be introduced from outside into the capacitor 33 of power supply；Form the top seal room 41 and the lower seal room 42 that carry out flux interaction on the top of upper magnetic pole 20 and the bottom of lower magnetic pole 21；High frequency waves in order to produce in action space 14 are transmitted into outside, are provided with and are connected to blade 12 through upper magnetic pole 20 and antenna 51 that top seal room 41 central authorities extract；It is generated by the heat of blade 12 transmission in order to be cooled in action space 14, be provided with cooling sheet 61；Additionally go back handlebar cooling sheet 61 to protect at parts such as shells 19 that is internal and that shed by the heat that cooling sheet 61 transmits.
Shell 19 includes the upper casing 19a holding interior arrangement from upside and the lower casing 19b holding interior arrangement from downside.
Exhaustor 60 shown in figure is after magnetron assembles, in order to magnetron is become the part that vacuum state cuts off when being exhausted operation.
The following describes magnetron working condition as above.When magnetic pole 20 and lower magnetic pole 21 form magnetic flux on the magnetic field that Magnet 22 produces is passed through, between blade 12 and filament 13, form magnetic field.In time being energized by capacitor 33, filament 13 radiates thermoelectron at about 2000K temperature, and thermoelectron 4.0KV to 4.4KV between filament 13 and anelectrode portion and the action space 14 under the effect in the magnetic field that Magnet 22 produces rotate.
So, when passing through central authorities' guide rod 17 and side guide rod 18 and being energized to filament 13, the electric field of about 2450MHZ is produced between blade 12 and filament 13, make thermoelectron by becoming harmonic wave under the effect in electric field and magnetic field in action space 14, and make harmonic propagation be transmitted into outside to the antenna 51 connecting blade 12.
At the basic wave (2450MHZ) not being only useful for the cooking that action space produces, also have the high-frequency harmonic of basic wave frequency integral multiple, mainly include the second high-frequency harmonic (4900MHZ), the 3rd high-frequency harmonic (7350MHZ), the 4th high-frequency harmonic (9.8GHZ), the 5th high-frequency harmonic (12.5GHZ) etc..Basic wave is for heating the article in microwave oven, and the electric elements of surrounding are easily caused strong electromagnetic interference by integral multiple high-frequency harmonic, and harmful, it is therefore necessary to reduces high-frequency harmonic as far as possible and leaks from magnetron.
The antenna seal cover 100 of magnetron in prior art, is surrounded by cover wall 102 and is formed, and is arranged at the positive pole shell upper of magnetron, and is internally formed top seal room in cover wall, arranges antenna outlet 104 on antenna seal cover top, and antenna passes from antenna outlet.And the upper end of antenna seal cover passes from the upper casing of shell.For avoiding microwave from the slot leakage of combination between antenna seal cover and upper casing, a nested gasket rings 101 is needed in the upper end of antenna seal cover, gasket rings 101 should fit tightly with the cover wall of antenna seal cover 100 upper end, and extend to antenna seal cover lateral direction and the shield portions of ring-type, gasket rings upwards passes from enclosure when mounted, the shield portions 103 of gasket rings bottom is stayed in the enclosure, and gasket rings top passes the through hole in the middle of upper casing 19a, prevent microwave from leaking from upper casing intermediate throughholes by the shield portions of gasket rings 101.
But must closely cooperate between the magnetron antenna seal cover of prior art and gasket rings, therefore that the requirement of processing technique is higher.If the dimensional fits of antenna seal cover and gasket rings is improper, will reserving space between antenna seal cover and gasket rings, the microwave in magnetron will leak out from above-mentioned space, and the electric elements around human body and microwave oven are had a negative impact.It addition, antenna seal cover and gasket rings are two parts, technological process during production and processing is more, causes that production efficiency declines.
Summary of the invention
The present invention solves that the technical problem existed in prior art provides a kind of gasket rings with integrative-structure, thus preventing microwave leakage, simplification of flowsheet, reduces the antenna seal cover of the magnetron of production cost.
The present invention solves that the technical problem existed in prior art is adopted the technical scheme that:
The antenna seal cover of the magnetron of the present invention, surrounded by cover wall and formed, it is arranged at the positive pole shell upper of magnetron, and it is internally formed top seal room in cover wall, on antenna seal cover top, antenna outlet is set, the cover wall of antenna seal cover upper end is uniformly bent to form covering tegmental wall to the peripheral direction of antenna seal cover, and forms antenna outlet in cover wall and covering tegmental wall junction, and covering tegmental wall outwards extends and forms the gasket rings of ring-type.
The present invention can also adopt following technical measures:
The cover wall of described antenna seal cover upper end is shunk to the inside, and the diameter of antenna seal cover upper end is less than lower end diameter.
The cover wall of described antenna seal cover upper end bends 180 ° laterally and forms covering tegmental walls, and covering tegmental wall downwardly extends and again uniformly extend to outside after 90-degree bent laterally formation gasket rings.
Described covering tegmental wall extends to cover wall and again outwards bends to the position of contract.
Described covering tegmental wall is close to cover wall and is downwardly extended.
The present invention has the advantage that and has the benefit effect that
In the antenna seal cover of the magnetron of the present invention, the cover wall of antenna seal cover upper end is outwards bent to form covering tegmental wall, covering tegmental wall downwardly extends and again extends to form gasket rings to lateral buckling outside antenna seal cover simultaneously, gasket rings shelters from the space at upper casing intermediate throughholes place, when magnetron works, the shield portions of gasket rings can effectively prevent the leakage of microwave, owing to gasket rings and antenna seal cover are made of one piece, gap is not had between gasket rings and antenna seal cover, so avoiding the probability of microwave leakage between gasket rings and antenna seal cover, make magnetron relatively reliable, the high-frequency harmonic adverse effect to surrounding body and electric elements is reduced when magnetron works.On the other hand, gasket rings and antenna seal cover time processing form, and decreasing parts, simplify production process, thus improve production efficiency, also reducing production cost.
Accompanying drawing explanation
Fig. 1 is the magnetron structures longitudinal section of prior art；
Fig. 2 is the structural representation of magnetron antenna seal cover in prior art；
Fig. 3 is the structural representation of prior art middle washer ring；
Fig. 4 is the sectional view of prior art middle washer ring；
Fig. 5 is the sectional view of magnetron antenna seal cover and gasket rings combination in prior art；
Fig. 6 is the structural representation of magnetron antenna seal cover in the present invention；
Fig. 7 is the sectional view of magnetron antenna seal cover in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be described in detail.
Fig. 6 is the structural representation of magnetron antenna seal cover in the present invention；Fig. 7 is the sectional view of magnetron antenna seal cover in the present invention.
As shown in Figure 6 and Figure 7, the antenna seal cover 100 of the magnetron of the present invention, surrounded by cover wall 102 and formed, it is arranged at the positive pole shell upper of magnetron, and it is internally formed top seal room in cover wall, on antenna seal cover 100 top, antenna outlet 104 is set, the cover wall 102 of antenna seal cover 100 upper end is uniformly bent to form covering tegmental wall 105 to the peripheral direction of antenna seal cover, and form antenna outlet 104 in cover wall and covering tegmental wall junction, covering tegmental wall outwards extends and forms the gasket rings 101 of ring-type, the through-hole diameter that when peripheral diameter of gasket rings is more than combination, the upper casing of magnetron shell is middle, to complete the blocking of space between through hole and antenna seal cover.
The cover wall 102 of antenna seal cover 100 upper end is shunk to the inside, and the diameter of antenna seal cover upper end is less than lower end diameter, thus reducing the leakage of high-frequency harmonic.
The cover wall 102 of antenna seal cover 100 upper end bends 180 ° laterally and forms covering tegmental wall 105, covering tegmental wall downwardly extends and again uniformly extends to outside after 90-degree bent laterally formation gasket rings, the shield portions 103 partly as gasket rings outwards extended, gasket rings place plane is vertical with the axial direction of antenna seal cover, so that the inner side of antenna seal cover gasket rings when mounted and shell upper casing closely attaches.
Covering tegmental wall 105 extends to cover wall and again outwards bends to the position of contract, and covering tegmental wall outer circumference diameter, less than the diameter of upper casing intermediate throughholes, enables antenna seal cover upper end to pass from above-mentioned through hole.
Covering tegmental wall 105 is close to cover wall 102 and is downwardly extended, so that the structure of antenna seal cover is more compact, it is simple to the combination between antenna seal cover and upper casing is installed.
In the antenna seal cover of the magnetron of the present invention, the cover wall of antenna seal cover upper end is outwards bent to form covering tegmental wall, covering tegmental wall downwardly extends and again extends to form gasket rings to lateral buckling outside antenna seal cover simultaneously, gasket rings shelters from the space at upper casing intermediate throughholes place, when magnetron works, the shield portions of gasket rings can effectively prevent the leakage of microwave, owing to gasket rings and antenna seal cover are made of one piece, gap is not had between gasket rings and antenna seal cover, so avoiding the probability of microwave leakage between gasket rings and antenna seal cover, make magnetron relatively reliable, the high-frequency harmonic adverse effect to surrounding body and electric elements is reduced when magnetron works.On the other hand, gasket rings and antenna seal cover time processing form, and decreasing parts, simplify production process, thus improve production efficiency, also reducing production cost.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, although the present invention is with preferred embodiment openly as above, but, it is not limited to the present invention, any those skilled in the art, without departing within the scope of technical solution of the present invention, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case it is the content without departing from technical solution of the present invention, according to any simple modification that above example is made by the technical spirit of the present invention, equivalent variations and modification, belong in the scope of technical solution of the present invention.
Claims (4)
1. the antenna seal cover of a magnetron, surrounded by cover wall and formed, it is arranged at the positive pole shell upper of magnetron, and it is internally formed top seal room in cover wall, on antenna seal cover top, antenna outlet is set, it is characterized in that: the cover wall of antenna seal cover upper end is uniformly bent to form covering tegmental wall to the peripheral direction of antenna seal cover, and form antenna outlet in cover wall and covering tegmental wall junction, covering tegmental wall outwards extends and forms the gasket rings of ring-type, the cover wall of antenna seal cover upper end is shunk to the inside, and the diameter of antenna seal cover upper end is less than lower end diameter.
2. the antenna seal cover of magnetron according to claim 1, it is characterized in that: the cover wall of antenna seal cover upper end bends 180 ° laterally and forms covering tegmental walls, covering tegmental wall downwardly extends and again uniformly extends to outside after 90-degree bent laterally formation gasket rings.
3. the antenna seal cover of magnetron according to claim 2, it is characterised in that: covering tegmental wall extends to cover wall and again outwards bends to the position of contract.
4. the antenna seal cover of magnetron according to claim 2, it is characterised in that: covering tegmental wall is close to cover wall and is downwardly extended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150104.7A CN102820195B (en) | 2011-06-07 | 2011-06-07 | The antenna seal cover of magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150104.7A CN102820195B (en) | 2011-06-07 | 2011-06-07 | The antenna seal cover of magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820195A CN102820195A (en) | 2012-12-12 |
| CN102820195B true CN102820195B (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110150104.7A Expired - Fee Related CN102820195B (en) | 2011-06-07 | 2011-06-07 | The antenna seal cover of magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102820195B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988105A (en) * | 2005-12-21 | 2007-06-27 | Lg电子株式会社 | Magnetron |
| CN101146381A (en) * | 2006-09-15 | 2008-03-19 | 乐金电子(天津)电器有限公司 | Copper gasket structure for microwave oven magnetic control tube |
| CN101640156A (en) * | 2008-08-01 | 2010-02-03 | 乐金电子(天津)电器有限公司 | Choke structure of magnetron |
-
2011
- 2011-06-07 CN CN201110150104.7A patent/CN102820195B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988105A (en) * | 2005-12-21 | 2007-06-27 | Lg电子株式会社 | Magnetron |
| CN101146381A (en) * | 2006-09-15 | 2008-03-19 | 乐金电子(天津)电器有限公司 | Copper gasket structure for microwave oven magnetic control tube |
| CN101640156A (en) * | 2008-08-01 | 2010-02-03 | 乐金电子(天津)电器有限公司 | Choke structure of magnetron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102820195A (en) | 2012-12-12 |
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Granted publication date: 20160629 |