CN1159728A - Antenna feeder of magnetron for electromagnetic range and assembling structure of exhausting tube - Google Patents
Antenna feeder of magnetron for electromagnetic range and assembling structure of exhausting tube Download PDFInfo
- Publication number
- CN1159728A CN1159728A CN96120352A CN96120352A CN1159728A CN 1159728 A CN1159728 A CN 1159728A CN 96120352 A CN96120352 A CN 96120352A CN 96120352 A CN96120352 A CN 96120352A CN 1159728 A CN1159728 A CN 1159728A
- Authority
- CN
- China
- Prior art keywords
- feeder
- blast pipe
- magnetron
- small diameter
- diameter portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
-
- 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
- H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
- H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
- H01J23/44—Rod-type coupling devices
Abstract
The invention relates to a permatron antenna feeder for induction cooker and an exhaust pipe assembly structure, which can assemble the exhaust pipe rapidly without the deformation of antenna feeder, and prevent the deformation of the exhaust pipe and the position change of the antenna feeder when in sealed-off operation, as well as maintain the characteristics of the permatron. Wherein, the lower section of the antenna feeder is fixed at the vanes; when the antenna feeder is arranged at the central section of an anode sealing element, the exhaust pipe is assembled, and then the upper part of the exhaust pipe is sealed off; after the part with small diameter of the antenna feeder is inserted, the inside diameter of the sealed-off exhaust pipe is larger than the part with small diameter of the antenna feeder, and the inside diameter is larger than the section with big diameter of the part with small diameter.
Description
The present invention relates to the electromagnetic stove magnetron, particularly when carrying out the assembling of feeder and blast pipe, can prevent feeder distortion and the feeder of change in location and the assembly structure of blast pipe.
The structure of existing magnetron is provided with inline shape filament 1 along central axial direction in the pipe as shown in Figure 1, and its periphery is provided with the cylindrical shape anode 2 of the two poles of the earth structure.
In the working space 10 between above-mentioned filament 1 and the anode 2, be provided with permanent magnet 4a, 4b and the magnetic pole 20 that forms magnetic field after formation applies magnetic flux successively, form magnetic loop in the centre, above and below of lower plate 3.On the upper plate 19 that is fixed, be provided be sent to outside feeder 5 and antenna pottery 6, antenna cap 7 by the next high-frequency energy of anode transmission.
Anode 2 inboards have been fixed multi-disc blade 8 radially, for the heat that the electronic impact of being heated on above-mentioned blade 8 is produced is passed to the outside rapidly, multilayer polylith fin 9 is set between lower plate 3 and blade 8, in lower plate filtering box 11 is set below 3, choke 12 and capacitor 13, unwanted 2 with what prevent that working space 10 from producing, the integral multiple HFS adverse current of 450KHZ first-harmonic is gone into power supply.
In addition, by last end shield 14 and the thermionic filament 1 of following end shield 15 supporting emissions.Center conductor 16 that exposes in the filtering box 11 and side lead (not shown) are fixed in the above-mentioned end shield 15 down, expose partial fixing in filtering box on terminals 17.Above-mentioned center conductor 16 and side lead are by 18 insulation of cylindrical shape negative electrode pottery.
The course of work of the magnetron of said structure is as follows.
When the magnetic field of permanent magnet 4a, 4b forms magnetic circuit between upper and lower plate 19,3 and magnetic pole 20, just form electric field between blade 8 and the filament 1, thereby by the hot electron of filament 1 emission because electric field and magnetic field and in working space, do the roulette motion.
So the hot electron of doing accelerated motion is transformed into high-frequency electrical energy.At this moment, although most of high-frequency energy of Chuan Songing is 2 simultaneously, the high order harmonic component of the first-harmonic of 450KHZ and first-harmonic integral multiple can be removed high order harmonic component by the coil 22 that is arranged in the anode seal 21.
And, as shown in Figure 3, the core that is contained in the feeder 5 in the blast pipe 23 is positioned at the center of anode seal 21, make blast pipe 23 cylindrical, the diameter support sector 5a littler than blast pipe internal diameter arranged on the insertion section of feeder 5, when assembling 5a of support sector and blast pipe 23, feeder 5 is positioned on the center of anode seal 21.
But, such a existing structure, because the bigger above-mentioned 5a of support sector of ratio antenna feeder line 5 body parts has been arranged, thereby when feeder 5 was inserted anode seal 21 inside, size can be stuck in blast pipe 23 hypomeres greater than the 5a of support sector of body part.Thereby the problem that exists generation to be out of shape.
And, assembled after the feeder 5, between the external diameter (φ 1) of feeder body part and blast pipe internal diameter (φ 3), formed space S.Thereby when using the sealed-off of vacuum seal technology to cut off blast pipe, feeder can be out of shape, thereby makes the assembling place distortion of magnetron output, and the problem that the magnetron characteristic descends takes place.
The object of the present invention is to provide a kind of electromagnetic stove feeder of magnetron and the assembly structure of blast pipe, it is assembly platoon tracheae and can not make feeder distortion fast, prevent the distortion of blast pipe when sealed-off is operated and the change in location of feeder, stably kept the characteristic of magnetron.
The technology formation of the present invention that designs for achieving the above object is, the hypomere of feeder is fixed on the blade, after above-mentioned feeder is placed the centre of anode seal, assemble blast pipe, and then the electromagnetic stove on the top of sealed-off blast pipe is with in the feeder and blast pipe assembly structure of magnetron, the blast pipe of sealed-off had internal diameter greater than the small diameter portion of feeder external diameter and the internal diameter major diameter part greater than the insertion feeder of described small diameter portion after the small diameter portion of above-mentioned feeder was inserted.
Below, describe embodiments of the invention in detail with reference to accompanying drawing.In the accompanying drawing:
Fig. 1 is the longitudinal sectional drawing of common magnetron;
Fig. 2 is the longitudinal sectional drawing of existing magnetron output;
Fig. 3 is the feeder of Fig. 2 and the exploded perspective view of blast pipe;
Fig. 4 is the longitudinal sectional drawing of magnetron output of the present invention;
Fig. 5 is the feeder of Fig. 4 and the exploded perspective view of blast pipe.
Fig. 4 is the longitudinal sectional drawing of the confined state of feeder and blast pipe, and Fig. 5 is the feeder of Fig. 4 and the exploded perspective view of blast pipe, and the part identical with existing magnetron structures represented with identical label during the present invention constituted, and omitted its explanation.
In the magnetron of the present invention, the body position that the feeder 5 on the blade 8 is fixed in the lower end is clavate, fines away in the end.
That is to say, make external diameter with inserting after the body position of feeder 5 greater than feeder 5 by the internal diameter of the small diameter portion 23a of the blast pipe 23 of sealed-off, the major diameter part 23b of above-mentioned blast pipe 23 then makes greater than small diameter portion 23a, the coupling part 23c that connects above-mentioned major diameter part 23b and small diameter portion 23a then makes the conical surface 23d that external diameter reduces gradually, when being assembled in feeder 5 in the blast pipe 23, above-mentioned feeder 5 inserts among the small diameter portion 23a by the major diameter part 23b of blast pipe 23.
Therefore, when being assemblied in feeder 5 in the blast pipe 23, the epimere of feeder 5 can be by the conical surface 23d of coupling part 23c guiding, the end distortion of feeder when having prevented to insert, and above-mentioned antenna end successfully guided among the small diameter portion 23a.
In addition, the external diameter φ 1 of feeder 5 is φ 1=0.8～0.9 φ 2 with the ratio of the internal diameter φ 2 of small diameter portion.Thereby implement easily pack into operation among the blast pipe small diameter portion 23a of feeder 5 after assembling is finished, can be made the gap minimum between them, and the feeder distortion that occurs can prevent the sealed-off operation time.
The following describes effect of the present invention, effect with this formation.
When with an end of the feeder 5 of output by being fixed on a slice blade 8 at the groove that forms on the magnetic pole 20, when again the epimere of the feeder 5 major diameter part 23b by blast pipe 23 being inserted, because epimere is the tip shape, form the conical surface of tiltangle in 50 °～70 ° scopes, thereby minimum with the contact area of blast pipe major diameter part 23b, feeder can insert in the blast pipe 23 by major diameter part 23b at an easy rate.
In case the epimere of feeder 5 is inserted after the major diameter part 23b of blast pipe 23, the epimere of the tip shape of feeder 5 promptly is deflated pipe 23 connecting portion 23c inner surfaces formed conical surface 23d and guides and insert among the small diameter portion 23a, is state shown in Figure 4.
Like this, when inserting feeder 5 in the blast pipe 23, the external diameter φ 1 of feeder 5 is φ 1=0.8 φ 2～0.9 φ 2 with the ratio of the internal diameter φ 2 of small diameter portion.Thereby, when carrying out the sealed-off operation for the vacuum seal magnetron, can prevent to move on feeder 5 compressive deformations and the position.
In addition, because it is consistent that blast pipe 23 is made the binding site of the connecting portion 23c of the cut-out point that makes feeder 5 and blast pipe 23 and small diameter portion 23a, so when on above-mentioned cut-out point, cutting off, can reduce the deviation of above-mentioned sealed-off point.
As mentioned above,,, assembly manipulation be can rapidly, correctly implement, when carrying out the sealed-off operation after assembling is finished, the distortion of feeder and the variation of position also can be prevented by becoming the shape of blast pipe and feeder according to the present invention.Thereby can make the center of feeder consistent, thereby can improve output characteristic, noise characteristic and the stability etc. of magnetron with the center of anode seal.
And, owing to formed small diameter portion, with respect to existing blast pipe, also can save material.
Claims (5)
1. an electromagnetic stove is with the exhaust pipe structure of magnetron, the hypomere that it has feeder is fixed on the blade, after above-mentioned feeder is placed the centre of anode seal, assembles blast pipe, and then the feeder of the magnetron on the top of sealed-off blast pipe and blast pipe assembly structure
It is characterized in that the blast pipe of sealed-off had internal diameter greater than the small diameter portion of feeder external diameter and the internal diameter major diameter part greater than the insertion feeder of described small diameter portion after the small diameter portion of above-mentioned feeder was inserted.
2. electromagnetic stove as claimed in claim 1 is characterized in that with the exhaust pipe structure of magnetron, and the major diameter part of described blast pipe and small diameter portion are by linking to each other to the coupling part that the small diameter portion internal diameter reduces gradually from the major diameter part.
3. electromagnetic stove as claimed in claim 1 is characterized in that with the feeder structure of magnetron, inserts the feeder of small diameter portion after the above-mentioned major diameter part by blast pipe, and its that part of inserting the blast pipe small diameter portion is bar-shaped.
4. the assembly structure of magnetron antenna feeder line as claimed in claim 1 and blast pipe is characterized in that, the external diameter φ 1 of described feeder is φ 1=0.8 φ 2～0.9 φ 2 with the ratio of the internal diameter φ 2 of the small diameter portion of described blast pipe.
5. electromagnetic stove as claimed in claim 3 is characterized in that with the feeder structure of magnetron the epimere that partly inserts the feeder of small diameter portion by the major diameter of described blast pipe partly is the tip shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950037581A KR0166875B1 (en) | 1995-10-27 | 1995-10-27 | Antenna feeder and exhaust cap structure of magnetron for microwave oven |
| KR37581/95 | 1995-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1159728A true CN1159728A (en) | 1997-09-17 |
Family
ID=19431569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120352A Pending CN1159728A (en) | 1995-10-27 | 1996-10-25 | Antenna feeder of magnetron for electromagnetic range and assembling structure of exhausting tube |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH09167573A (en) |
| KR (1) | KR0166875B1 (en) |
| CN (1) | CN1159728A (en) |
| GB (1) | GB2306768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715041A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube, microwave-using apparatus and manufacturing method of magnet-controlled tube |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB952416A (en) * | 1960-07-08 | 1964-03-18 | Ass Elect Ind | Improvements in or relating to magnetrons |
| GB924277A (en) * | 1960-07-08 | 1963-04-24 | Ass Elect Ind | Magnetron |
| JPS5824371Y2 (en) * | 1977-09-27 | 1983-05-25 | 株式会社東芝 | magnetron |
| JPS6217973Y2 (en) * | 1980-04-30 | 1987-05-08 | ||
| DE68913331T2 (en) * | 1988-04-25 | 1994-06-09 | Matsushita Electronics Corp | Magnetron. |
| US5180946A (en) * | 1990-02-15 | 1993-01-19 | Sanyo Electric Co., Ltd. | Magnetron having coaxial choke means extending into the output side insulating tube space |
| KR940005989Y1 (en) * | 1991-11-20 | 1994-08-31 | 주식회사 금성사 | Magnetron of electric range |
-
1995
- 1995-10-27 KR KR1019950037581A patent/KR0166875B1/en not_active IP Right Cessation
-
1996
- 1996-10-25 JP JP8284184A patent/JPH09167573A/en active Pending
- 1996-10-25 CN CN96120352A patent/CN1159728A/en active Pending
- 1996-10-28 GB GB9622392A patent/GB2306768A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715041A (en) * | 2012-10-04 | 2014-04-09 | 松下电器产业株式会社 | Magnet-controlled tube, microwave-using apparatus and manufacturing method of magnet-controlled tube |
| CN103715041B (en) * | 2012-10-04 | 2016-03-02 | 松下电器产业株式会社 | The manufacture method of magnetron, device using microwaves and magnetron |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0166875B1 (en) | 1999-01-15 |
| GB9622392D0 (en) | 1997-01-08 |
| JPH09167573A (en) | 1997-06-24 |
| GB2306768A (en) | 1997-05-07 |
| KR970025289A (en) | 1997-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |