CN101728177A - radiating fin of magnetron - Google Patents
radiating fin of magnetron Download PDFInfo
- Publication number
- CN101728177A CN101728177A CN200810152523A CN200810152523A CN101728177A CN 101728177 A CN101728177 A CN 101728177A CN 200810152523 A CN200810152523 A CN 200810152523A CN 200810152523 A CN200810152523 A CN 200810152523A CN 101728177 A CN101728177 A CN 101728177A
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- fin
- guiding gutter
- magnetron
- anodal
- radiator shutter
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Abstract
The invention relates to a radiating fin of a magnetron, which is all-in-one shaped and stamped from a metal plate. An anode hole is arranged in the center of the radiating fin; an anode hole plate is arranged around the anode hole; the left side and the right side of each radiating fin are respectively cut, bent and processed to form a plurality of heat radiation blades; the tail end of the outer side of each heat radiation blade is provided with a fixed bend; a plurality of radiating fins are respectively arranged in parallel around the anode hole on the radiating fin and on the heat radiation blades, and all the radiating fins are bent towards the same side of the radiating fin to form flow guide grooves. When flowing over the radiating fin, air is guided by the flow guide grooves all around and changes the flow direction, so that airflow can generate streaming, and the air quantity of the leeside of the back of an anode is increased; meanwhile, the airflow is blocked by the radiating fins and flows towards the vertical direction, which enables static flow to be changed into turbulent flow and convection of air among the radiating fins to be enhanced, thereby improving the heat exchange capability of the radiating fins, lowering the temperature of the anode of the magnetron and enhancing the working performance of the magnetron.
Description
Technical field
The invention belongs to the technical field of magnetron, be specifically related to a kind of by a plurality of fins are set on fin, and each fin is bent to form guiding gutter to the homonymy of fin, stream when making air flow through fin, thereby can make air carry out the fin of the magnetron of sufficient heat exchange.
Background technology
Fig. 1 is the magnetron structures longitudinal section of prior art; Fig. 2 is the structural representation of fin of the magnetron of prior art.
As shown in Figure 1 and Figure 2, magnetron mainly includes: positive electrode portion; Negative electrode portion; Magnetic pole piece; The microwave emission part.Positive electrode portion is formed with a plurality of radial blades 12 by the anodal shell 11 of drum shape on the inwall of anodal shell 11, welding inner and outer ring formation in the lower groove on the blade.
Negative electrode portion 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 to break away from from the central shaft above-below direction, form upper seal 15 and lower seal 16 in the top and bottom of filament 13 from the hot electron that filament 13 radiation are come out; 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 be connected 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 last 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 last 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 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 in addition; Connect filter coil 32, and the capacitor 33 of power supply is introduced in cross-over connection in both ends of power from the outside; The 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 the antenna 51 that blade 12 and the last magnetic pole 20 of perforation and top seal chamber 41 central authorities extract; To produce and pass through the heat that blade 12 transmits for 14 li in order cooling off, to be provided with fin 61 at action space; Go back the parts such as shell 19 that 61 protections of handlebar fin shed at heat inner and that fin 61 is transmitted in addition.
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 portion.
Like this, passing through central guide rod 17 and side guide rod 18 in filament 13 energisings, 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 field and magnetic field, and the antenna 51 that makes harmonic wave be delivered to connection blade 12 is transmitted into the outside.
But, there is following problem in the prior art:
In the fin of the magnetron of prior art, all not have setting can change the structure of air flow on the position in anodal hole and radiator shutter, the stream condition when air flows through fin is level and smooth laminar flow, and air can not produce and stream.Because the heat-exchange capacity when air flows through anode of magnetron depends on size and quantity that fluid streams in the generation of flowing, when air flows through the groups of fins of prior art, the type of flow of air is relatively stable, the route that flows is also more fixing, therefore the degree of streaming that produces is less, simultaneously because the mobile stroke of air between the magnetron cooling fin group is shorter, can only in small range, finish the heat exchange of air and anode of magnetron, thereby cause the heat-sinking capability of magnetron relatively poor, be unfavorable for system radiating.
Summary of the invention
The present invention provides a kind of by a plurality of fins are set for solving the technical problem that exists in the prior art on fin, and each fin is bent to form guiding gutter to the homonymy of fin, stream when making air flow through fin, thereby can make air carry out the fin of the magnetron of sufficient heat exchange.
The technical scheme that the present invention takes for the technical problem that exists in the solution prior art is:
The fin of magnetron of the present invention is stamped to form by metallic plate is one-body molded, leaves anodal hole at the fin middle part, is used to assemble the anodal shell of magnetron; Fin around anodal hole site is bent to form anodal orifice plate, and anodal orifice plate and anodal shell cooperatively interact when fin assembles; 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 symmetrically distributed; Outer ends at each radiator shutter all is formed with fixedly bending, is arranged with a plurality of fins in parallel around anodal hole on fin, and each fin is bent to form guiding gutter to the homonymy of fin, and the opening direction of guiding gutter is towards anodal hole; On radiator shutter, also be provided with a plurality of parallel fins simultaneously, each fin is bent to form guiding gutter to the homonymy of fin, the opening direction of guiding gutter is all towards the radiator shutter of centre on the radiator shutter at two ends, and the direction of facining the wind the when opening direction of guiding gutter uses with fin on the middle radiator shutter is consistent.
The present invention can also adopt following technical measures:
Described fin and the whole homonymies that bend to fin of the fin on the radiator shutter around anodal hole.
Described guiding gutter around anodal hole is made up of the different segmentation guiding gutter of multistage, and the segmentation guiding gutter that is positioned at medium position is vertical with the air inflow direction, and the segmentation guiding gutter of both sides is obliquely installed around anodal hole respectively.
Alternate being staggered of segmentation guiding gutter of described both sides.
Advantage and good effect that the present invention has are:
In the fin of magnetron of the present invention, be arranged with a plurality of fins respectively in parallel on the fin on anodal hole site and radiator shutter, each fin is bent to form guiding gutter to the homonymy of fin.When air is flowed through groups of fins, be subjected to the guiding of guiding gutter everywhere and change direction, air-flow is repeatedly produced in flowing to stream, increased the air mass flow of anodal back side leeward side, and because the fin of guiding gutter all is the same lateral buckling to fin, the obstruction that air-flow is subjected to fin flows to vertical direction, make laminar flow change turbulent flow into, strengthened the convection current of air between fin, when simultaneously air flow stream is crossed fin the distance of process also increase to some extent, 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 fin of the anode of magnetron of prior art;
Fig. 3 is the structural representation of the fin of magnetron of the present invention;
Fig. 4 is the inlet side view of the fin of magnetron of the present invention;
Fig. 5 is the inlet side view after the fin of magnetron of the present invention is assembled.
Embodiment
The present invention will be described in detail below in conjunction with drawings and Examples.
Fig. 3 is the structural representation of the fin of magnetron of the present invention; Fig. 4 is the inlet side view of the fin of magnetron of the present invention; Fig. 5 is the inlet side view after the fin of magnetron of the present invention is assembled.
Extremely shown in Figure 5 as Fig. 3, the fin 61 of anode of magnetron of the present invention, be stamped to form by metallic plate is one-body molded, leave anodal hole 62 at the fin middle part, be used to assemble the anodal shell of magnetron, fin around anodal hole site is bent to form anodal orifice plate 65, on fin, be arranged with a plurality of fins in parallel around anodal hole, each fin is bent to form guiding gutter 66 to the homonymy of fin, the opening direction of guiding gutter is towards anodal hole, guiding gutter around anodal hole is made up of the different segmentation guiding gutter of multistage, and the segmentation guiding gutter that is positioned at medium position is vertical with the air inflow direction, and the segmentation guiding gutter of both sides is obliquely installed around anodal hole respectively, and alternate being staggered of segmentation guiding gutter of both sides, increased heat exchange area on the one hand, also made air flows more irregular on the other hand, easier formation is streamed.Air-flow is subjected to the guiding of guiding gutter can walk around the anodal shell arrival leeward side of magnetron, thereby can strengthen the exchange heat of anodal shell leeward side, has strengthened the fin heat exchange in the air-flow dead band.On radiator shutter, also be provided with a plurality of parallel fins simultaneously, each fin is bent to form guiding gutter to the homonymy of fin, the opening direction of guiding gutter is all towards the radiator shutter of centre on the radiator shutter at two ends, and the direction of facining the wind the when opening direction of guiding gutter uses with fin on the middle radiator shutter is consistent.Fin and the whole homonymies that bend to fin of the fin on the radiator shutter around anodal hole.
The fin that model is identical is stacked to be installed on the same anodal shell, a plurality of restriction protrusion (not shown) all are set on the every fin, pushing every fin during installation is in contact with one another until the fin of each restriction protrusion and lower floor, can guarantee that so adjacent fin all keeps constant distance mutually, 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 symmetrically distributed.
The outer ends of each radiator shutter all is formed with fixedly bending 64, 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.
In the fin of magnetron of the present invention, be arranged with a plurality of fins respectively in parallel on the fin on anodal hole site and radiator shutter, each fin is bent to form guiding gutter to the homonymy of fin.When air is flowed through groups of fins, be subjected to the guiding of guiding gutter everywhere and change direction, air-flow is repeatedly produced in flowing to stream, increased the air mass flow of anodal back side leeward side, and because the fin of guiding gutter all is the same lateral buckling to fin, the obstruction that air-flow is subjected to fin flows to vertical direction, make laminar flow change turbulent flow into, strengthened the convection current of air between fin, when simultaneously air flow stream is crossed fin the distance of process also increase to some extent, thereby improved the heat-exchange capacity of fin, reduced the temperature of anode of magnetron, the service behaviour of magnetron is improved.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention with preferred embodiment openly as above, yet, be not in order to limit the present invention, any those skilled in the art, in 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, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (4)
1. the fin of a magnetron is stamped to form by metallic plate is one-body molded, leaves anodal hole at the fin middle part, is used to assemble the anodal shell of magnetron; Fin around anodal hole site is bent to form anodal orifice plate, and anodal orifice plate and anodal shell cooperatively interact when fin assembles; 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 symmetrically distributed; Outer ends at each radiator shutter all is formed with fixedly bending, it is characterized in that: be arranged with a plurality of fins in parallel around anodal hole on fin, each fin is bent to form guiding gutter to the homonymy of fin, and the opening direction of guiding gutter is towards anodal hole; On radiator shutter, also be provided with a plurality of parallel fins simultaneously, each fin is bent to form guiding gutter to the homonymy of fin, the opening direction of guiding gutter is all towards the radiator shutter of centre on the radiator shutter at two ends, and the direction of facining the wind the when opening direction of guiding gutter uses with fin on the middle radiator shutter is consistent.
2. the fin of magnetron according to claim 1 is characterized in that: around the fin and the whole homonymies that bend to fin of the fin on the radiator shutter in anodal hole.
3. the fin of magnetron according to claim 1, it is characterized in that: the guiding gutter around anodal hole is made up of the different segmentation guiding gutter of multistage, the segmentation guiding gutter that is positioned at medium position is vertical with the air inflow direction, and the segmentation guiding gutter of both sides is obliquely installed around anodal hole respectively.
4. the fin of magnetron according to claim 3 is characterized in that: alternate being staggered of segmentation guiding gutter of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810152523A CN101728177A (en) | 2008-10-29 | 2008-10-29 | radiating fin of magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810152523A CN101728177A (en) | 2008-10-29 | 2008-10-29 | radiating fin of magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101728177A true CN101728177A (en) | 2010-06-09 |
Family
ID=42448858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810152523A Pending CN101728177A (en) | 2008-10-29 | 2008-10-29 | radiating fin of magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101728177A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820192A (en) * | 2011-06-07 | 2012-12-12 | 乐金电子(天津)电器有限公司 | Radiating fin of anode of magnetron |
| WO2019119693A1 (en) * | 2017-12-19 | 2019-06-27 | 广东威特真空电子制造有限公司 | Magnetron |
| CN110459450A (en) * | 2015-09-22 | 2019-11-15 | 应用材料公司 | The magnetron of the 3D printing of cooling characteristics with enhancing |
-
2008
- 2008-10-29 CN CN200810152523A patent/CN101728177A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820192A (en) * | 2011-06-07 | 2012-12-12 | 乐金电子(天津)电器有限公司 | Radiating fin of anode of magnetron |
| CN102820192B (en) * | 2011-06-07 | 2016-03-02 | 乐金电子(天津)电器有限公司 | The fin of anode of magnetron |
| CN110459450A (en) * | 2015-09-22 | 2019-11-15 | 应用材料公司 | The magnetron of the 3D printing of cooling characteristics with enhancing |
| CN110459450B (en) * | 2015-09-22 | 2022-02-18 | 应用材料公司 | 3D printed magnetron with enhanced cooling characteristics |
| WO2019119693A1 (en) * | 2017-12-19 | 2019-06-27 | 广东威特真空电子制造有限公司 | Magnetron |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |