CN109860007A - Magnetron and insulating treatment method and its application under vacuum state - Google Patents
Magnetron and insulating treatment method and its application under vacuum state Download PDFInfo
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- CN109860007A CN109860007A CN201910102210.4A CN201910102210A CN109860007A CN 109860007 A CN109860007 A CN 109860007A CN 201910102210 A CN201910102210 A CN 201910102210A CN 109860007 A CN109860007 A CN 109860007A
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- magnetron
- shielding box
- choking
- winding
- vacuum
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Abstract
The invention discloses under a kind of vacuum state magnetron and insulating treatment method and its application；The magnetron is provided in vacuum tank and is arranged in the top of microwave heating chamber, and the magnetron includes shielding box, and the shielding box is arranged on emission cavity top, and the emission cavity bottom surface is provided with antenna, and the shielding box includes shield shell and screening cover；The shield shell side wall is provided with feedthrough capacitor, is symmetrically arranged with choking-winding in the shield shell.Interference this invention removes vacuum to shielding cavity realizes magnetron and works normally under vacuum conditions.
Description
Technical field
The present invention relates to micro-wave vacuum fields, and in particular to magnetron and insulation processing side under a kind of vacuum state
Method and its application.
Background technique
Magnetron is a kind of electron tube for generating microwave energy.Substantially one be placed in stationary magnetic field two
Pole pipe.Electronics interacts under the control of orthogonal stationary magnetic field and steady electric field with electromagnetic field of high frequency in managing,
Energy conversion is obtained from steady electric field into microwave energy, to achieve the purpose that generate microwave energy.The emission cavity of magnetron
The microwave of generation, a part enter specified working region by antenna, to material heat effect, another part, along
Central tap into emission cavity is leaked out with avris lead direction.Existing magnetron, from the appearance from the point of view of, mainly by two
Part is at A. Microwave emission chamber, B. micro-wave screening chamber, C. transmitting antenna, D. feedthrough capacitor.
To reduce microwave from leakage, in the prior art, central tap and avris lead pass through A. shielding cavity and enter back into B. transmitting
Chamber, shielding cavity are mainly made of 1 shielding box cover, 2 choking-windings, 3 feedthrough capacitors, 4 shielding boxs.Since the effect of shielding box is anti-
Only microwave from leakage, according to the characteristic of microwave, when aperture is less than certain size, microwave just be cannot pass through, this size and microwave
Frequency it is related, such as the most common household microwave oven, frequency 2455MHZ, when aperture or gap are less than 6 millimeters, microwave
Just it cannot reveal.Therefore, shielding cavity does not need to completely enclose, and allows to have certain size hole or gap.Simultaneously as choke line
Circle at work, can generate heat, therefore, general shielding box all devises 5 ventholes；
In special application field, microwave dryer needs to work under vacuum conditions.The shielding box of magnetron has ventilation
Hole, shielding box cover also do not seal, and magnetron works in vacuum environment, when reaching higher vacuum, since vacuum ionizes
The reason of, vacuum ionization phenomena is generated between choking-winding and shielding box, choking-winding, causes magnetron that cannot work,
Therefore, magnetron can only be mounted on the outside of vacuum tank, microwave is sent out by existing micro-wave vacuum equipment
It penetrates window to be closed, then vacuum tank is heated.This mounting means, the sealing of magnetron window are very tired
Difficulty can not produce large-scale micro-wave vacuum equipment, limit the use of microwave dryer.The shielding cavity of magnetron,
Major air leak point is three classes:
1. the ventilation hole on shielding box；
2. shielding box itself has the gap, including box cover with box body can not seal, shielding box body, there are gaps；
3. the original part being connect respectively with shielding cavity side wall and bottom -- feedthrough capacitor, annular emission pipe, connecting screw, surrounding
There are gaps.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide under a kind of vacuum state magnetron and insulation
Processing method and its application.
To achieve the above object, the magnetron under a kind of vacuum state designed by the present invention, the magnetron are provided in
Vacuum tank is interior and the top of microwave heating chamber is arranged in, and the magnetron includes shielding box, and the shielding box is set on emission cavity
Surface, the emission cavity bottom surface are provided with antenna, and the shielding box includes shield shell and screening cover；The shield shell side wall
It is provided with feedthrough capacitor, is symmetrically arranged with choking-winding in the shield shell.
Further, high voltage bearing insulating materials protective layer is enclosed on the choking-winding.The choking-winding of shielding cavity
In insulation environment, vacuum ionization phenomena is thoroughly avoided.
Still further, the material of the high voltage bearing insulating materials protective layer is high-voltage isulation rouge or high voltage insulating oil.
The present invention also provides a kind of methods for preparing above-mentioned magnetron using insulation processing, comprising the following steps:
1) it is transformed in magnetron production process or to product, using adhesive or metal welding procedure by shielding box
Hole be sealed, and feedthrough capacitor and emission cavity are sealed with shielding box junction；Shielding box is set to become sealing
Cavity,
2) high voltage bearing insulating materials is injected in shielding box, choking-winding is fully wrapped around, form high voltage bearing insulation
Material protection layer；
The present invention also provides above-mentioned magnetrons to apply in micro-wave vacuum field.
The core technology that the present invention protects are as follows:
1) shielding cavity back box closed processes；
2) shielding cavity injects high pressure resistant insulation material, and choking-winding is fully wrapped around, preferably high-voltage isulation rouge.
Beneficial effects of the present invention:
This invention removes vacuum to ionize the interference to magnetron, realizes magnetron and works normally under vacuum conditions,
The device structure for enormously simplifying micro-wave vacuum enables micro-wave vacuum equipment enlarged.
Detailed description of the invention
Fig. 1 is magnetron operation schematic diagram in existing micro-wave vacuum equipment；
Fig. 2 is magnetron of the present invention operation schematic diagram in micro-wave vacuum equipment；
Fig. 3 is the schematic diagram of magnetron of the present invention；
Fig. 4 is the detail view of shielding box；
In figure, magnetron 1, shielding box 1.1, shield shell 1.11, screening cover 1.12, emission cavity 1.2, antenna 1.3, punching
It is capacitor 1.4, choking-winding 1.5, vacuum microwave heating chamber 2, heating object 3, microwave heating chamber 4, vacuum tank 5, high voltage bearing
Insulating materials protective layer 6.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, so as to those skilled in the art
Understand.
The magnetron under vacuum state as shown in figures 2-3, the magnetron are provided in vacuum tank 5 and are arranged
The top of microwave heating chamber 4, magnetron include shielding box 1.1, and shielding box 1.1 is arranged in 1.2 top of emission cavity, emission cavity 1.2
Bottom surface is provided with antenna 1.3, and shielding box 1.1 includes shield shell 1.11 and screening cover 1.12；The setting of 1.11 side wall of shield shell
There is feedthrough capacitor 1.4, choking-winding 1.5 is symmetrically arranged in shield shell 1.11, is enclosed on choking-winding 1.5 high voltage bearing
Insulating materials protective layer 6；The material of high voltage bearing insulating materials protective layer 6 is high-voltage isulation rouge；
The method for preparing above-mentioned magnetron using insulation processing, comprising the following steps:
1) it is transformed in magnetron production process or to product, using adhesive or metal welding procedure by shielding box
1.1 are sealed, and feedthrough capacitor 1.4 and emission cavity 1.2 are sealed with 1.1 junction of shielding box；Make shielding box 1.1 at
For the cavity of sealing,
2) high voltage bearing insulating materials is injected in shielding box, choking-winding is fully wrapped around, form high voltage bearing insulation
Material protection layer 6；
Other unspecified parts are the prior art.Although above-described embodiment is made that the present invention and retouches in detail
State, but it is only a part of the embodiment of the present invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiments are obtained under the premise of creativeness, these embodiments belong to the scope of the present invention.
Claims (5)
1. the magnetron under a kind of vacuum state, it is characterised in that: the magnetron is provided in vacuum tank 5 and is arranged micro-
The top of Wave heating chamber 4, the magnetron include shielding box 1.1, and the shielding box 1.1 is arranged in 1.2 upper surface of emission cavity, institute
It states 1.2 bottom surface of emission cavity and is provided with antenna 1.3, the shielding box 1.1 includes shield shell 1.11 and screening cover 1.12；The screen
It covers 1.11 side wall of shell and is provided with feedthrough capacitor 1.4, be symmetrically arranged with choking-winding 1.5 in the shield shell 1.11.
2. the magnetron under vacuum state according to claim 1, it is characterised in that: be enclosed on the choking-winding 1.5
High voltage bearing insulating materials protective layer 6.The choking-winding of shielding cavity is in insulation environment, thoroughly avoids vacuum ionization phenomena.
3. the magnetron under vacuum state according to claim 2, it is characterised in that: the high voltage bearing insulating materials protection
The material of layer 6 is high-voltage isulation rouge or high voltage insulating oil.
4. a kind of method using magnetron described in insulation processing preparation claim 1, it is characterised in that: the following steps are included:
1) it is transformed in magnetron production process or to product, using adhesive or metal welding procedure by shielding box 1.1
Hole be sealed, and feedthrough capacitor 1.4 and emission cavity 1.2 are sealed with 1.1 junction of shielding box；Make shielding box
1.1 become the cavity of sealing,
2) high voltage bearing insulating materials is injected in shielding box, choking-winding is fully wrapped around, form high voltage bearing insulating materials
Protective layer 6.
5. magnetron described in a kind of claim 1 is applied in micro-wave vacuum field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102210.4A CN109860007A (en) | 2019-02-01 | 2019-02-01 | Magnetron and insulating treatment method and its application under vacuum state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102210.4A CN109860007A (en) | 2019-02-01 | 2019-02-01 | Magnetron and insulating treatment method and its application under vacuum state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109860007A true CN109860007A (en) | 2019-06-07 |
Family
ID=66897392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910102210.4A Pending CN109860007A (en) | 2019-02-01 | 2019-02-01 | Magnetron and insulating treatment method and its application under vacuum state |
Country Status (1)
| Country | Link |
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| CN (1) | CN109860007A (en) |
Citations (12)
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| CN1536276A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Combination method of magnetron element for microwave oven and its combination material |
| CN1900353A (en) * | 2005-07-19 | 2007-01-24 | 应用材料公司 | Evacuable magnetron chamber |
| CN101630621A (en) * | 2009-08-13 | 2010-01-20 | 南京恒乐机电设备有限公司 | Magnetron tube core without exhaust tube |
| CN201478251U (en) * | 2009-08-13 | 2010-05-19 | 南京恒乐机电设备有限公司 | Suction tube-free magnetic control tube core |
| WO2010073564A1 (en) * | 2008-12-25 | 2010-07-01 | パナソニック株式会社 | Magnetron and microwave-using equipment |
| CN102237240A (en) * | 2010-04-27 | 2011-11-09 | 乐金电子(天津)电器有限公司 | Filtering structure of magnetron |
| JP2012054010A (en) * | 2010-08-31 | 2012-03-15 | Toshiba Hokuto Electronics Corp | Magnetron and method for manufacturing the same |
| CN103531419A (en) * | 2013-10-25 | 2014-01-22 | 电子科技大学 | Magnetron tube core for microwave heating |
| CN204115430U (en) * | 2014-07-18 | 2015-01-21 | 陈长清 | A kind of high-efficiency and continuous vacuum microwave drier |
| CN105258480A (en) * | 2014-07-18 | 2016-01-20 | 陈长清 | Efficient continuous vacuum microwave drying machine |
| CN106711000A (en) * | 2016-12-22 | 2017-05-24 | 广东威特真空电子制造有限公司 | Magnetron shielding component |
| CN206480585U (en) * | 2016-12-22 | 2017-09-08 | 广东威特真空电子制造有限公司 | A kind of magnetron shield assembly and magnetron |
-
2019
- 2019-02-01 CN CN201910102210.4A patent/CN109860007A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536276A (en) * | 2003-04-11 | 2004-10-13 | 乐金电子(天津)电器有限公司 | Combination method of magnetron element for microwave oven and its combination material |
| CN1900353A (en) * | 2005-07-19 | 2007-01-24 | 应用材料公司 | Evacuable magnetron chamber |
| WO2010073564A1 (en) * | 2008-12-25 | 2010-07-01 | パナソニック株式会社 | Magnetron and microwave-using equipment |
| CN101630621A (en) * | 2009-08-13 | 2010-01-20 | 南京恒乐机电设备有限公司 | Magnetron tube core without exhaust tube |
| CN201478251U (en) * | 2009-08-13 | 2010-05-19 | 南京恒乐机电设备有限公司 | Suction tube-free magnetic control tube core |
| CN102237240A (en) * | 2010-04-27 | 2011-11-09 | 乐金电子(天津)电器有限公司 | Filtering structure of magnetron |
| JP2012054010A (en) * | 2010-08-31 | 2012-03-15 | Toshiba Hokuto Electronics Corp | Magnetron and method for manufacturing the same |
| CN103531419A (en) * | 2013-10-25 | 2014-01-22 | 电子科技大学 | Magnetron tube core for microwave heating |
| CN204115430U (en) * | 2014-07-18 | 2015-01-21 | 陈长清 | A kind of high-efficiency and continuous vacuum microwave drier |
| CN105258480A (en) * | 2014-07-18 | 2016-01-20 | 陈长清 | Efficient continuous vacuum microwave drying machine |
| CN106711000A (en) * | 2016-12-22 | 2017-05-24 | 广东威特真空电子制造有限公司 | Magnetron shielding component |
| CN206480585U (en) * | 2016-12-22 | 2017-09-08 | 广东威特真空电子制造有限公司 | A kind of magnetron shield assembly and magnetron |
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Application publication date: 20190607 |
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