CN101640154B - Positive pole radiating fin of magnetron - Google Patents
Positive pole radiating fin of magnetron Download PDFInfo
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- CN101640154B CN101640154B CN 200810054054 CN200810054054A CN101640154B CN 101640154 B CN101640154 B CN 101640154B CN 200810054054 CN200810054054 CN 200810054054 CN 200810054054 A CN200810054054 A CN 200810054054A CN 101640154 B CN101640154 B CN 101640154B
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- magnetron
- fin
- radiator shutter
- positive pole
- radiating fin
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Abstract
The invention relates to a positive pole radiating fin of a magnetron, which is made of a metal plate through integrated molding and punching, wherein a positive pole hole for assembling a positive pole shell of the magnetron is reserved in the middle part of the radiating fin; the left side and the right side of the radiating fin are processed with a plurality of radiating blades through cutting and bending respectively so as to enlarge the contact area of the radiating fin and the air flowing by, and the radiating blades on the left side and the right side are distributed symmetrically; and a fixed bend is formed at the tail end of the outer side of each radiating blade, the radiating blades are at different heights, and the radiating blades are not collided in space. The radiating fin groups at different positions use different air circulation spaces as much as possible to ensure that each radiating blade can perform heat exchange with cold air sufficiently when the outside cold air passes through the air circulation space, so the heat exchange capability of the radiating fin is improved, the temperature of the positive pole of the magnetron is reduced, and the working performance of the magnetron is improved.
Description
Technical field
The invention belongs to the technical field of magnetron, it is different to be specifically related to a kind of residing height of each radiator shutter that is positioned at homonymy, and does not repeat each other in shared space, can take full advantage of the positive pole radiating fin that Air Flow carries out the magnetron of heat exchange.
Background technology
Fig. 1 is the magnetron structures longitudinal section of prior art; Fig. 2 is the structural representation of the magnetron cooling fin of prior art.As shown in Figure 1 and Figure 2, magnetron mainly includes: positive electrode section; Negative electrode section; Magnetic pole piece; The microwave emission part.Positive electrode section is by the anodal shell 11 of drum shape, is formed with a plurality of radial blades 12 at the inwall of anodal shell 11, on the blade in the lower groove welding inner and outer ring consist of.
Negative electrode section is included on the central shaft by form spiral-shaped of W (tungsten) and TH (thorium) element and can radiates thermionic filament 13; Between the end of blade 12 and filament 13, form the action space 14 that makes the hot electron rotation; In order to prevent breaking away from from the central shaft above-below direction from filament 13 radiation hot electron out, form upper seal 15 and lower seal 16 in the top and bottom of filament 13; For filament supports 13 and introduce power supply, designed the filament central authorities guide rod 17 that connects lower seal 16 and connect upper seal 15 and introduced power supply with central guide rod 17 and connect the side guide rod 18 of lower seal 16.
Magnetic pole piece comprises the top and bottom that are fixed on anodal shell 11 and can form the upper magnetic pole 20 of magnetic flux, lower magnetic pole 21; To form magnetic field in order making on the action space 14, in the upper end of upper magnetic pole 20 and the lower end of lower magnetic pole 21 magnetite 22 to be installed, magnetite is circulus and certain thickness is arranged.
In addition, connect in addition ceramic component 31 and connect filament central authorities guide rod 17 1 ends and guide rod 18 1 ends in side carry out the filter coil 32 of filter function; Connect filter coil 32, and be connected across both ends of power is introduced power supply from the outside capacitor 33; Top seal chamber 41 and the lower seal chamber 42 of flux interaction carried out in the bottom that is formed on the top of magnetic pole 20 and lower magnetic pole 21; For the high frequency waves in 14 li generations of action space are transmitted into the outside, are provided with and are connected to the antenna 51 that blade 12 and the upper magnetic pole 20 of perforation and top seal chamber 41 central authorities extract; To produce and pass through the heat that blade 12 transmits in order cooling off 14 li of action spaces, to be provided with fin 61; Go back in addition the parts such as shell 19 that 61 protections of handlebar fin shed at heat inner and that fin 61 is transmitted.
The following describes aforesaid magnetron working condition.When magnetic pole 20 and lower magnetic pole 21 form magnetic flux on the magnetic field that magnetite 22 produces is passed through, between blade 12 and filament 13, form magnetic field.When switching on by capacitor 33, filament 13 is approximately radiating hot electron under the 2000K temperature, and hot electron is rotated to 4.4KV and the action space 14 under the effect in the magnetic field that magnetite 22 produces at the 4.0KV between filament 13 and the positive electrode section.
Like this, when switching on to filament 13 by central guide rod 17 and side guide rod 18, at the electric field that produces between blade 12 and the filament 13 about 2450MHZ, make hot electron in action space 14, become harmonic wave under the effect by Electric and magnetic fields, and make harmonic propagation be transmitted into the outside to the antenna 51 that connects blade 12.
But, there is following problem in the prior art:
In the positive pole radiating fin of the magnetron of prior art, symmetrically arranged processing mode before and after the radiator shutter of homonymy all adopts, as shown in Figure 2, the bending mode of two radiator shutters of side is identical before and after the radiator shutter of middle part, residing height is also identical, when one group of fin parallel layers closed assembly fits on the anodal shell of magnetron, the shared space of the radiator shutter of front side and rear side radiator shutter is identical, and therefore interlobate gas channel is also identical.During magnetron work, extraneous air flows through the space between fin and carries out heat exchange with fin, the air that flow through the rear side radiator shutter this moment has been the air that carried out heat exchange with the front side radiator shutter, the temperature of air is higher, the rear side radiator shutter can't be fully with the heat transferred air, cause heat to concentrate on the fin, the heat radiation of magnetron and service behaviour descend.
Summary of the invention
The present invention provides a kind of residing height of each radiator shutter that is positioned at homonymy different for solving the technical problem that exists in the prior art, does not repeat each other in shared space, can take full advantage of the positive pole radiating fin that Air Flow carries out the magnetron of heat exchange.
The technical scheme that the present invention takes for the technical problem that exists in the solution prior art is:
The positive pole radiating fin of magnetron of the present invention is stamped to form by metallic plate is one-body molded, leaves the anodal hole for assembling anode of magnetron shell at the fin middle part; Shear respectively the left and right sides of fin and bending process goes out a plurality of radiator shutters, and to enlarge fin and the contact area that flows through air, the radiator shutter of the left and right sides is symmetrical; Outer ends at each radiator shutter is formed with fixedly bending, and the residing height of each radiator shutter is also different, and does not repeat each other in shared space.
The present invention can also adopt following technical measures:
All radiator shutter bending angles and the shape of homonymy are different.
Arranged sequentially according to from low to high of the radiator shutter height and position of homonymy.
Arranged sequentially according to from high to low of the radiator shutter height and position of homonymy.
The fixedly bending of the radiator shutter end of homonymy is in same plane.
The radiator shutter that is in the middle part is wider than the radiator shutter of its both sides, front and back.
The number of times of the radiator shutter bending at middle part is more
Advantage and good effect that the present invention has are:
In the positive pole radiating fin of magnetron of the present invention, all radiator shutter bending angles and the shape of homonymy are different, the residing height of each radiator shutter is also different, does not repeat each other in shared space, after one group of fin is assembled to anodal shell, the groups of fins of diverse location is used different circulation of air spaces as far as possible, when cool exterior air flows through, can guarantee each radiator shutter can be fully and cold air carry out heat exchange, thereby improved the heat-exchange capacity of fin, reduced the temperature of anode of magnetron, the service behaviour of magnetron is improved.
Description of drawings
Fig. 1 is the magnetron structures longitudinal section of prior art;
Fig. 2 is the structural representation of positive pole radiating fin of the magnetron of prior art;
Fig. 3 is the structural representation of the positive pole radiating fin of magnetron of the present invention;
Fig. 4 is the magnetron external structure schematic diagram that fin of the present invention is installed.
Embodiment
The present invention will be described in detail below in conjunction with drawings and Examples.
Fig. 3 is the structural representation of the positive pole radiating fin of magnetron of the present invention; Fig. 4 is the external structure that the magnetron of fin of the present invention is installed.
As shown in Figure 3, Figure 4, the positive pole radiating fin 61 of magnetron of the present invention is stamped to form by aluminium metal sheet is one-body molded.Leave for the anodal hole 62 of assembling the anode of magnetron shell at the fin middle part, when fin is installed, matched with anodal shell in anodal hole, and press downward to fin, repeat this step repeatedly, can make one group of stacked being installed on the same anodal shell of fin that model is identical, a plurality of restriction protrusion (not shown) all are set on the every fin, press every fin during installation until the fin of each restriction protrusion and lower floor is in contact with one another, can guarantee that so adjacent fin all keeps mutually constant distance, and keep fin to be parallel to each other, thereby make the air flow circuit between fin keep unimpeded.
Shear respectively the left and right sides of fin and bending process goes out three radiator shutters 63, to enlarge fin and the contact area that flows through air, because the center of fin is provided with anodal hole, for guaranteeing the continuous strength of fin, the radiator shutter that is in the middle part will be wider than the radiator shutter of its both sides, front and back, and the radiator shutter of the left and right sides is symmetrical.All radiator shutter bending angles and the shape of homonymy are different, and the residing height of each radiator shutter is also different, and does not repeat each other in shared space.The fin of diverse location can directly touch without the cold air of crossing heat exchange before, during and after when can make like this air stream cross groups of fins, reduce as far as possible the position the preceding radiator shutter to the position after radiator shutter heat conducting interference occurs.
Different radiator shutters can be finished sufficient heat exchange in its corresponding spatial dimension in magnetron shell 19, fin roughly is divided into 3 fundamental regions to the inner space of shell in the present embodiment, be in respectively enclosure upper, middle and lower section, be each fin three radiator shutters respectively to upper, middle and lower three highly bend, on each height, only have one group of overbending direction radiator shutter identical with shape to occupy an leading position.
The radiator shutter height and position of homonymy is arranged sequentially according to from low to high from front to back, perhaps arranged sequentially according to from high to low, make the arrangement of radiator shutter present from front to back the transition of nature, with from front to back according to being arranged as in descending order example, the circulating area of air is divided into height, in, low three zoness of different, when air flows through the radiating area of magnetron enclosure, respectively successively with height, in, the radiator shutter of low three parts carries out heat exchange, the too high district of air stream in high district and when carrying out heat exchange with the radiator shutter in height district, any variation does not occur in the air in middle district and low district, continue to flow forward, in like manner, when the air in middle district flows through middle district and carries out heat exchange with the radiator shutter in middle district, the air in low district continues to flow forward, finished a heat exchange this moment in the high district air still flows in the height district, until flow out shell, a small amount of interference only occurs near the composition surface in zone the air-flow in the Three regions.If the height of radiator shutter is not arranged sequentially, the situation that the mutual interference of zones of different exchange air-flow phase then occurs can increase greatly.
The outer ends of each radiator shutter is formed with fixedly bending, the fixedly bending of the radiator shutter end of homonymy is in same plane, when fin is installed, need it is applied downward pressure, radiator shutter generation deformation is entered in the shell of magnetron, and fixedly the bending inwall that withstands lower casing 19b is fixed the fin holding position.
Owing to be in the radiator shutter of fin front side and rear side respectively towards height district and the bending of low district, its height, span is all larger, middle district can stay larger free air space, for the circulation of air that makes middle district is fully utilized, the number of times that the radiator shutter at middle part can be bent increases, to obtain larger heat exchange contact area.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention with preferred embodiment openly as above, yet, be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, be the content that does not break away from technical solution of the present invention in every case, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (6)
1. the positive pole radiating fin of a magnetron is stamped to form by metallic plate is one-body molded, leaves the anodal hole for assembling anode of magnetron shell at the fin middle part; Shear respectively the left and right sides of fin and bending process goes out a plurality of radiator shutters, and to enlarge fin and the contact area that flows through air, the radiator shutter of the left and right sides is symmetrical; Outer ends at each radiator shutter is formed with fixedly bending, and the residing height of the radiator shutter of the same side is different, and does not repeat each other in shared space, it is characterized in that: arranged sequentially according to from low to high of the radiator shutter height and position of homonymy.
2. the positive pole radiating fin of magnetron according to claim 1, it is characterized in that: all radiator shutter bending angles and the shape of homonymy are different.
3. the positive pole radiating fin of magnetron according to claim 1, it is characterized in that: the fixedly bending of the radiator shutter end of homonymy is in same plane.
4. the positive pole radiating fin of magnetron according to claim 1 is characterized in that: the radiator shutter that is in the middle part of the same side is wider than the radiator shutter of both sides before and after it.
5. the positive pole radiating fin of magnetron according to claim 1 is characterized in that: the number of times of the radiator shutter bending at the middle part of the same side is more.
6. the positive pole radiating fin of a magnetron is stamped to form by metallic plate is one-body molded, leaves the anodal hole for assembling anode of magnetron shell at the fin middle part; Shear respectively the left and right sides of fin and bending process goes out a plurality of radiator shutters, and to enlarge fin and the contact area that flows through air, the radiator shutter of the left and right sides is symmetrical; Outer ends at each radiator shutter is formed with fixedly bending, and the residing height of the radiator shutter of the same side is different, and does not repeat each other in shared space, it is characterized in that: arranged sequentially according to from high to low of the radiator shutter height and position of homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810054054 CN101640154B (en) | 2008-08-01 | 2008-08-01 | Positive pole radiating fin of magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810054054 CN101640154B (en) | 2008-08-01 | 2008-08-01 | Positive pole radiating fin of magnetron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101640154A CN101640154A (en) | 2010-02-03 |
| CN101640154B true CN101640154B (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810054054 Expired - Fee Related CN101640154B (en) | 2008-08-01 | 2008-08-01 | Positive pole radiating fin of magnetron |
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| CN (1) | CN101640154B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728178A (en) * | 2008-10-29 | 2010-06-09 | 乐金电子(天津)电器有限公司 | Radiating fin of anode of magnetron |
| CN108389765A (en) * | 2018-04-10 | 2018-08-10 | 广东威特真空电子制造有限公司 | Radiating subassembly for magnetron and the magnetron with it |
| CN109243942A (en) * | 2018-09-10 | 2019-01-18 | 广东美的厨房电器制造有限公司 | Radiating subassembly for magnetron and the magnetron with it |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744264A (en) * | 2004-09-03 | 2006-03-08 | Lg电子株式会社 | Magnetron cooling fin |
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2008
- 2008-08-01 CN CN 200810054054 patent/CN101640154B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744264A (en) * | 2004-09-03 | 2006-03-08 | Lg电子株式会社 | Magnetron cooling fin |
Non-Patent Citations (1)
| Title |
|---|
| JP昭61-243639A 1986.10.29 |
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| CN101640154A (en) | 2010-02-03 |
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