CN101459027B - Magnetron - Google Patents
Magnetron Download PDFInfo
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- CN101459027B CN101459027B CN2009100364492A CN200910036449A CN101459027B CN 101459027 B CN101459027 B CN 101459027B CN 2009100364492 A CN2009100364492 A CN 2009100364492A CN 200910036449 A CN200910036449 A CN 200910036449A CN 101459027 B CN101459027 B CN 101459027B
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- anode
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- blade
- cathode
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- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims abstract description 4
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 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
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
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Abstract
The invention relates to a magnetron. The anode part comprises a cylindrical anode cylinder, a plurality of radial anode blades fixed on the inner wall surface of the anode cylinder, a large cross-connecting ring, a small cross-connecting ring and an antenna, wherein the large cross-connecting ring, the small cross-connecting ring and the antenna are arranged in the anode cylinder, the cathode part comprises a central support rod assembly coaxially assembled with the anode part and a spiral filament wound on the central support rod assembly, a pair of magnetic poles made of soft magnetic materials are symmetrically arranged in the axial direction of the anode part, a cathode power supply input part and a microwave power output part are respectively arranged on the outer sides of the two magnetic poles, the outer diameter dc of the spiral filament is within the range of 3.7-3.9 mm, the diameter of an inscribed circle formed by the top end part of each blade along the axial direction is da, and the relationship between the da and the outer diameter dc of the spiral filament meets: dc/da is more than 0.45 and less than 0.48; the mutual interval w of the top end parts of the cathode sides of the plurality of adjacent anode vanes and the material thickness t of the anode vanes satisfy the following relational expression: t/w is more than 2.9 and less than 3.3. The output efficiency of the magnetron can be improved to more than 78% under the condition of basically not increasing the cost, thereby improving the output efficiency of the microwave oven.
Description
Technical field
The present invention is a kind of magnetron that is used for microwave oven, industrial microwave apparatus etc., belongs to the renovation technique of magnetron.
Background technology
Magnetron is the radio tube that produces microwave, because oscillation efficiency is higher, microwave output power is big, so be widely used as the microwave source of the microwave application equipment that comprises household microwave oven.Fig. 1 is the profile of the existing used magnetron of microwave oven.Magnetron is generally by anode component, cathode assembly, output block and the main compositions such as parts that form magnetic loop.Anode component is to be made of anode tube 1, blade 2, big commissure ring 3, little commissure ring 4 and antenna 5.Cathode assembly comprises center fulcrum bar component 6 and the limit fulcrum bar component that has shielding cap.The magnetron middle body is installed cathode assembly, with its anode component of installing coaxially.At the axial direction of anode component the magnetic pole of a pair of taper is installed symmetrically, magnetic pole and magnet and outside support assembly and installation base plate constitute magnetic loop.
In recent years, the energy-conservation requirement about microwave oven both at home and abroad improves constantly, so require to promote the delivery efficiency of magnetron.If on the basis of existing magnetron structures,, can realize by increasing anode voltage for raising the efficiency.Existing anode of magnetron voltage is generally 4.2kV, and its efficient is about 75%, and efficient brings up at 78% o'clock, and its anode voltage reaches 5.2kV.But when improving anode voltage, just must change the high-tension transformer of microwave oven, also must improve the dielectric voltage withstand of magnetron and its peripheral component, so that, increased production cost greatly in order to raise the efficiency.Simultaneously, because of its power requirement and existing product can not exchange, cause after-sale service and maintenance inconvenient.
Summary of the invention
The objective of the invention is to consider the problems referred to above and provide a kind of under the situation that does not improve production cost, can make delivery efficiency bring up to high-efficiency magnetic keyholed back plate more than 78%.Simultaneously, the present invention has also considered the noise problem of magnetron itself fully.The present invention not only saves the space, cost is low, safe in utilization, easy to operate, long service life.
Technical scheme of the present invention is: include anode component, cathode assembly, anode component includes anode tube cylindraceous, be fixed on the radial some anode blades on the anode tube inner wall surface and place the interior big commissure ring of anode tube, little commissure ring and antenna, cathode assembly includes and the center fulcrum bar component of the coaxial assembling of anode component and the helical heater on the fulcrum bar component of center, the magnetic pole of a pair of soft magnetic material is installed on the axial direction of anode component symmetrically, the outside of two magnetic poles is separately installed with cathode power importation and microwave power output, wherein the outside diameter d c of helical heater is in the scope of 3.7～3.9mm, constituting the inscribed circle diameter that above-mentioned blade tip portion in axial direction forms is da, and the relation between the outside diameter d c of da and helical heater satisfies following relational expression: 0.45＜dc/da＜0.48; The space w of the cathode side top ends that above-mentioned some anode blades are adjacent and the material thickness t of anode blade satisfy following relational expression: 2.9＜t/w＜3.3.
The magnetic density Bg of above-mentioned anode blade central axis portion is 200～240mT.
The distance L of the outside of above-mentioned antenna between the inwall of position on the anode blade and anode tube is 4.7～5.2mm.
The material thickness t of above-mentioned anode blade is 1.8～1.9mm.
The distance s of the outer diametric plane of above-mentioned big commissure ring aperture surface and little commissure ring is in 1.0～1.3mm scope.
After the present invention adopts desired structure, the operating voltage of magnetron remains unchanged, so the power supply of microwave oven can remain unchanged, cost does not rise substantially, but the delivery efficiency of magnetron can be brought up to more than 78%, thereby improve the delivery efficiency of microwave oven, help promoting the energy-conservation requirement of microwave oven.The present invention is that a kind of design is ingenious, function admirable, convenient and practical magnetron.
Description of drawings
Fig. 1 is the profile of magnetron;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the cross sectional representation of Fig. 2.
Embodiment
Embodiment:
Structural representation of the present invention such as Fig. 1,2,3, include anode component, cathode assembly, anode component includes anode tube 1 cylindraceous, be fixed on radial some anode blades 2 and the big commissure ring 3 that places in the anode tube 1 on anode tube 1 inner wall surface, little commissure ring 4 and antenna 5, cathode assembly includes and the center fulcrum bar component 6 of the coaxial assembling of anode component and the helical heater 7 on the center fulcrum bar component 6, the magnetic pole 8 of a pair of soft magnetic material is installed on the axial direction of anode component symmetrically, the outside of two magnetic poles 8 is separately installed with cathode power importation 9 and microwave power output 10, wherein the outside diameter d c of helical heater 7 is in the scope of 3.7～3.9mm, constituting the inscribed circle diameter that above-mentioned blade tip portion in axial direction forms is da, and the relation between the outside diameter d c of da and helical heater 7 satisfies following relational expression: 0.45＜dc/da＜0.48; The space w of the cathode side top ends that above-mentioned some anode blades 2 are adjacent and the material thickness t of anode blade 2 satisfy following relational expression: 2.9＜t/w＜3.3.
The magnetic density Bg of above-mentioned anode blade 2 central axis portions is 200～240mT.In the present embodiment, the magnetic density Bg of anode blade 2 central axis portions is 220mT.
The distance L of the outside of above-mentioned antenna 5 between the inwall of position on the anode blade 2 and anode tube 1 is 4.7～5.2mm.In the present embodiment, the distance L of the outside of antenna 5 between the inwall of position on the anode blade 2 and anode tube 1 is 4.9mm.
The material thickness t of above-mentioned anode blade 2 is 1.8～1.9mm.In the present embodiment, the material thickness t of anode blade 2 is 1.85mm.
The distance s of above-mentioned big commissure ring 3 aperture surfaces and little commissure ring 4 outer diametric planes is in 1.0～1.3mm scope.In the present embodiment, the distance s of big commissure ring 3 aperture surfaces and little commissure ring 4 outer diametric planes is 1.2mm.
The contrast of physical dimension of the present invention and existing product:
The contrast of key property of the present invention and existing product:
Claims (5)
1. magnetron, include anode component, cathode assembly, anode component includes anode tube cylindraceous (1), be fixed on the radial some anode blades (2) on anode tube (1) inner wall surface and place the interior big commissure ring (3) of anode tube (1), little commissure ring (4) and antenna (5), cathode assembly includes and the center fulcrum bar component (6) of the coaxial assembling of anode component and the helical heater (7) on the center fulcrum bar component (6), the magnetic pole (8) of a pair of soft magnetic material is installed on the axial direction of anode component symmetrically, the outside of two magnetic poles (8) is separately installed with cathode power importation (9) and microwave power output (10), the outside diameter d c that it is characterized in that helical heater (7) is in the scope of 3.7～3.9mm, constituting the inscribed circle diameter that above-mentioned blade tip portion in axial direction forms is da, and the relation between the outside diameter d c of da and helical heater (7) satisfies following relational expression: 0.45＜dc/da＜0.48; The material thickness t of the space w of the cathode side top ends that above-mentioned some anode blades (2) are adjacent and anode blade (2) satisfies following relational expression: 2.9＜t/w＜3.3.
2. magnetron according to claim 1 is characterized in that the magnetic density Bg of above-mentioned anode blade (2) central axis portion is 200～240mT.
3. magnetron according to claim 1 is characterized in that the distance L of the outside between the inwall of position on the anode blade (2) and anode tube (1) of above-mentioned antenna (5) is 4.7～5.2mm.
4. magnetron according to claim 1, the material thickness t that it is characterized in that above-mentioned anode blade (2) is 1.8～1.9mm.
5. magnetron according to claim 1, the distance s that it is characterized in that above-mentioned big commissure ring (3) aperture surface and the outer diametric plane of little commissure ring (4) is in 1.0～1.3mm scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100364492A CN101459027B (en) | 2009-01-06 | 2009-01-06 | Magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100364492A CN101459027B (en) | 2009-01-06 | 2009-01-06 | Magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101459027A CN101459027A (en) | 2009-06-17 |
| CN101459027B true CN101459027B (en) | 2011-01-19 |
Family
ID=40769801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100364492A Active CN101459027B (en) | 2009-01-06 | 2009-01-06 | Magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101459027B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253006B (en) * | 2013-06-27 | 2016-06-08 | 广东威特真空电子制造有限公司 | Magnetron tube core and magnetron |
| CN114446741B (en) * | 2021-11-18 | 2023-04-07 | 电子科技大学 | Array module magnetron and novel high-power magnetron unit |
-
2009
- 2009-01-06 CN CN2009100364492A patent/CN101459027B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101459027A (en) | 2009-06-17 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
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| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Penglai Road, Beijiao Town, Foshan District, Guangdong, China, Patentee before: Midea Group |
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| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG WITOL VACUUM ELECTRONIC MANUFACTURING CO Free format text: FORMER OWNER: MIDEA GROUP CO., LTD. Effective date: 20131206 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131206 Address after: 528311 Beijiao Industrial Park, Beijiao Town, Foshan, Guangdong, China, Shunde Patentee after: GUANGDONG WITOL VACUUM ELECTRONIC MANUFACTURE Co.,Ltd. Address before: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee before: MIDEA GROUP Co.,Ltd. |