CN1591753A - Structure of filtering box of magnetron - Google Patents
Structure of filtering box of magnetron Download PDFInfo
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- CN1591753A CN1591753A CN 03144182 CN03144182A CN1591753A CN 1591753 A CN1591753 A CN 1591753A CN 03144182 CN03144182 CN 03144182 CN 03144182 A CN03144182 A CN 03144182A CN 1591753 A CN1591753 A CN 1591753A
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- magnetron
- filtering box
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- leakage
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Abstract
The present invention relates to a magnetron filter box, belonging to the field of magnetron technology. It is aimed at solving the problem of that previous magnetron filter box is hexahedral form and has four connected portions which can result into electromagnetic wave leakage. Said invention is characterized by that its magnetron filter box is formed from hollow cylindrical main body and cover welded on its undersurface, said structure can reduce connected portions on the magnetron filter box so as to prevent the leakage of magnetron electromagnetic wave.
Description
Technical field
The invention belongs to the magnetron field and relate to a kind of structure of novel magnetron filtering box.Further: by the structure of magnetron filtering box is carried out innovative design, the connecting portion on the MIN minimizing magnetron filtering box prevents electromagnetic leakage.
The box of magnetron filtering in the present invention is to be made of the main body of hollow cylinder and the lid that is connected below him.
Such structure has reduced the bound fraction on the magnetron filtering box, thereby has effectively prevented electromagnetic leakage.
Background technology
As we all know: magnetron is mounted on electrons heat equipment (as: microwave oven) or the lighting apparatus, and its main effect is exactly to convert electrical energy into electromagnetic energy.
In general, the conversion of energy is that the space between negative electrode and anode forms, and the electromagnetic energy of Xing Chenging supplies to the inboard of microwave oven like this, but also has the electromagnetic energy of quite a few through regular meeting adverse current to take place.
The fundamental frequency of the employed magnetron of general home-use microwave oven is 2.45GHz, but resonance is not to take place in specific concentrated loop, so the Gao Bo of its integral multiple often takes place.
Such as: the 2nd Gao Bo on the 4.9GHz, the 3rd Gao Bo on the 7.35GHz, the 4th Gao Bo on the 9.8GHz, the 5th Gao Bo on the 12.25GHz or the like.Wherein of paramount importance is the 5th Gao Bo of 12.25GHz, because the satellite communication frequency of 11.7-12.5GHz scope is used in this frequency and Europe, and the satellite communication frequency in the scope of Japan use 11.7-12.2GHz is similar, so clash with above frequency.
The leakage of electromagnetic energy when in the past technical also has corresponding techniques to prevent to use microwave oven.With the interference of the 5th high ripple avoiding revealing to satellite communication.
Following the technical description that prevented from the past to reveal once.
Technology in the past is the part electromagnetic energy that adverse current takes place is reduced by magnetic induction loop and to eliminate, and the part electromagnetic energy that produces in its end constitutes hexahedral box around the magnetic induction loop and prevents leakage by being centered around.
But magnetron filtering box above-mentioned is constructed by hexahedron and is formed, so electromagnetic energy still can be revealed away by 4 binding sites on the box.
Summary of the invention
The present invention is that hexahedron structure has 4 binding sites to produce the problem of revealing in order to solve the box of magnetron filtering in the past, and the connecting portion on the MIN minimizing magnetron box prevents electromagnetic leakage.Provide a kind of magnetron filtering box it be to constitute by the main body of hollow cylinder and the lid that is connected below him.Such structure has reduced the bound fraction on the magnetron box, thereby has effectively prevented electromagnetic leakage.
Magnetron among the present invention is that power supply passes through to negative electrode and anode supply of electrical energy, thereby generates hot electron and electromagnetic field, and produces electromagnetic energy and derivation by the magnetisable material that is arranged on the two poles of the earth periphery.Generate and the part electromagnetic energy of adverse current reduces and stops by magnetic induction loop and the filtering box around it and reveals.
Emphasis among the present invention is on the structure of magnetron filtering box, and the box of magnetron filtering in the present invention is that the main body by hollow cylinder constitutes with the lid that is connected in its lower section.Has only an outside junction on the above-mentioned cartridge body.
Advantage and good effect: the present invention is by carrying out innovative design to the magnetron box-shaped structure, and the junction surface on the MIN minimizing magnetron box prevents electromagnetic leakage.The box of magnetron filtering in the present invention is made up of the main body of hollow cylinder and the lid that is connected below him.Such structure has reduced the bound fraction on the magnetron box, thereby has effectively prevented electromagnetic leakage.
Description of drawings
Fig. 1 is the front view according to magnetron filtering box construction of the present invention.
Fig. 2 is the sectional arrangement drawing of Fig. 1.
Fig. 3 is the sectional elevation of magnetron filtering box among the present invention.
Fig. 4 is the magnetron filtering box view among the present invention.
Fig. 5 is the sectional elevation of Fig. 4.
Among each figure:
1: shell, 1a: loam cake,
1b: housing main body, 4: anode tube,
5: cathode filament, 6: action space,
7: protuberance, 8: attachment,
9: go up magnetic pole, 10: lower magnetic pole,
11:A-chamber, 12:F-chamber,
13: upper magnetic object, 14: the bottom magnetic bodies,
15: cooling fin, 16: main traverse line,
17: subpolygon,
21: magnetron filtering box (filtering box, box),
21a: magnetron filtering cartridge body (cartridge body, main body),
21b: lid, 21a ': the joint portion,
22: magnetic induction loop (inductance coil), 23: attaching plug,
31: antenna, 32: the heat proof material pipe,
33: blast pipe, 34: antenna cap,
41: insulation heat proof material parts.
Embodiment
Below with reference to drawing structure of the present invention is described in detail.
Magnetron among the present invention is to be dressed up by the shell of " mouth " word shape (1), and its central portion has the anode tube (4) of drum shape, and is provided with cathode filament (5) in the central interior vertical direction of anode tube (4).
On the inside side face of anode tube (4), there are several protuberances (7) being provided with radial.These protuberances (7) interconnect with the attachment on the anode (8), have constituted the action space (6) that maintains certain distance thus between anode and negative electrode.
Last magnetic pole (9) and lower magnetic pole (10) are arranged in the top and the bottom of anode tube (4), and A-chamber (11) is being fixed on the top of last magnetic pole (9), and the bottom of lower magnetic pole (10) also is fixed with F-chamber (12).
Respectively there are top, bottom magnetic bodies (13,14) being connected in the outside of A-chamber (11) and F-chamber (12).
Between the shell (1) of anode tube (4) and magnetron, be provided with and guarantee the cooling fin (15) that dispels the heat, and be connected with main traverse line (16) and subpolygon (17) on the magnetron and come protuberance (7) power supply to cathode filament (5) and anode tube (4).
Bottom at the shell (1) of magnetron is exactly a magnetron filtering box (21), in the inside of above-mentioned box (21) magnetic induction loop (22) is arranged, magnetic induction loop (22) is being connected with subpolygon (17) with main traverse line (16), but also is being connected with the outside attaching plug (23) of above-mentioned box (21).
On the shell (1) on the inside of A-chamber (11) has antenna (31) being connected with anode tube protuberance (7) and guides to, have in the upper end of A-chamber (11) heat proof material pipe (32) in conjunction with, have blast pipe (33) being connected successively at an upper portion thereof with antenna cap (34).
Magnetron filtering box (21) is to be made of the main body (21a) of drum shape and the lid (21b) that is connected below its main body, has just prevented the leakage of electromagnetic energy thus on the structure.
Drawing symbol 41 is insulation heat proof material parts.
So, magnetron in the past is when passing through attaching plug (23) supply of electrical energy, and cathode filament (5) will be heated, and discharges hot electron, produces electronic population by the hot electron that these discharged.
Give voltage will for the protuberance (7) of anode tube (4) and anode tube inside by subpolygon (17), and then produce highfield in action space (6) lining.And the flux that is produced by upper magnetic object (13) and bottom magnetic bodies (14) is directed to action space (6) inside along lower magnetic pole (10), is directed to magnetic pole (9) from action space (6) again, so produces high-intensity magnetic field in action space (6) lining.
The protuberance (7) of anode pipe moves under the effect of hot electron highfield in action space (6) of action space (6) inner radiation from the surface of high temperature cathode silk (5), and this hot electron is subjected to strength vertical in the magnetic field and spins the protuberance (7) of motion near anode tube simultaneously.
Owing to the electronic population that electronic motion forms will be radiated with the integral multiple anode pipe protuberance (7) of periodic vibration frequency, so the capacitive effect of the inductance effect that produces between anode tube protuberance (7) and anode tube (4) and protuberance (7) is producing concussion loop (being also referred to as LC concussion loop on physics) on the loop, and so the electromagnetic wave that produces radiates to the outside by antenna (31).
In general, magnetron is the fundamental frequency ripple with 2.45GHz, but the electromagnetic wave back warp that radiates away often comprises the electromagnetic wave of its integer multiple frequency, these unnecessary electromagnetic waves are in case the words of revealing away can cause consequences such as communication obstacle, particularly the 5th electromagnetic wave (12.25GHz) is the main cause that causes the communication obstacle, these the 5th electromagnetic waves prevent to reveal because of the inner inductance coil (22) of above-mentioned filtering box (21) in by primary and secondary lead (16.17) adverse current.
The electromagnetic wave that takes place in the end of primary and secondary lead (16.17) then prevents to reveal because of being centered around inductance coil filtering box (21) on every side, and particularly the drum shape cartridge body (21a) among the present invention has then further reduced electromagnetic leakage.
Fig. 4 is the view of the magnetron filtering box among the present invention, and Fig. 5 is the drawing in side sectional elevation of Fig. 4.As shown in the figure, magnetron filtering box is to be made of the main body (21a) of drum shape and the lid (21b) of bottom.
In the making of magnetron filtering cartridge body, should such method of combined outside portion (21a ') that adopts as shown in the figure further reduce the bound fraction leakage, so to better effect being arranged with preventing electromagnetic leakage.
Claims (3)
1. the magnetron among the present invention is that power supply passes through to negative electrode and anode supply of electrical energy, further produces electric field thereby generate hot electron, and produces electromagnetic energy and derivation by the magnetic bodies that is arranged on the two poles of the earth periphery.Generate and the part electromagnetic energy of adverse current then reduces and stops by magnetic induction loop and the box around it and reveals.Emphasis in the present invention is on the structure of the filtering box of magnetron, it is characterized in that at the structure of magnetron filtering box of the present invention (21) it is to be made of the main body (21a) of hollow cylinder and the lid (21b) that is connected below it.
2. the structure of magnetron filtering box according to claim 1 is characterized in that: the cartridge body of its magnetron (21a) constitutes for integral structure.
3. the structure of magnetron filtering box according to claim 1 is characterized in that: the cartridge body of its magnetron (21a) goes up the external engagement portion (21a ') of existence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144182 CN1591753A (en) | 2003-08-26 | 2003-08-26 | Structure of filtering box of magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03144182 CN1591753A (en) | 2003-08-26 | 2003-08-26 | Structure of filtering box of magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1591753A true CN1591753A (en) | 2005-03-09 |
Family
ID=34597457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03144182 Pending CN1591753A (en) | 2003-08-26 | 2003-08-26 | Structure of filtering box of magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1591753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417472A (en) * | 2018-02-26 | 2018-08-17 | 温州职业技术学院 | A kind of more enhancings hollow cathode ion source |
-
2003
- 2003-08-26 CN CN 03144182 patent/CN1591753A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417472A (en) * | 2018-02-26 | 2018-08-17 | 温州职业技术学院 | A kind of more enhancings hollow cathode ion source |
| CN108417472B (en) * | 2018-02-26 | 2019-09-20 | 温州职业技术学院 | A kind of more enhancing hollow cathode ion sources |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |