CN202543039U - Automatic sealing-off furnace for vacuum device by means of electromagnetic induction heating fusion - Google Patents
Automatic sealing-off furnace for vacuum device by means of electromagnetic induction heating fusion Download PDFInfo
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- CN202543039U CN202543039U CN2011205236474U CN201120523647U CN202543039U CN 202543039 U CN202543039 U CN 202543039U CN 2011205236474 U CN2011205236474 U CN 2011205236474U CN 201120523647 U CN201120523647 U CN 201120523647U CN 202543039 U CN202543039 U CN 202543039U
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- China
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- electromagnetic induction
- induction coil
- vacuum
- vacuum device
- fusion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The utility model relates to an automatic sealing-off furnace for a vacuum device by means of electromagnetic induction heating fusion. The automatic sealing-off furnace is used for fusing and sealing off the exhaustion tubes of solar vacuum tubes, kinescopes and the like, and comprises a heating body, an upper insulating plate and a lower insulating plate, wherein the heating body is provided with a through hole; the upper and lower insulating plates can accommodate the heating body; an electromagnetic induction coil is encircled under the lower insulating plate; and the exhaustion tube of the vacuum device passes through the heating body and is communicated with the pipelines of a connection vacuum pump and the exhaustion pipe. When alternating current is switched on electromagnetic induction coil, an alternating induction electromagnetic field is generated in the heating body close to the electromagnetic induction coil so as to generate eddy current; the local part of the exhaustion tube is heated and smelted by the high temperature generated by the eddy current and retracted under the actions of vacuum suction and material surface tension; when the local part of the exhaustion tube is smelted to the inner wall and is adhered to each other, a vacuum cavity which is formed by communicating the vacuum device and the vacuum pump is divided into two independent airtight vacuum cavity bodies, so that the vacuum device is separated from the vacuum pump to complete a smelting and sealing-off process.
Description
Technical field
The utility model relates to the automatic sealed-off stove of a kind of vacuum device electromagnetic induction heating fusion, is applied to especially solar energy vacuum tube, and picture tube, the vapor pipe of flat-panel screens etc. carries out the fusion sealed-off.
Background technology
Vacuum device is solar energy vacuum tube particularly; Picture tube; In the making processes of flat-panel screens etc., an operation that vacuum device is vacuumized is arranged, vacuum device is connected with vacuum pump and accomplishes and easily vacuum device is separated with vacuum pump system after vacuumizing operation for ease; Be typically provided with a thinner vapor pipe on the vacuum device, also claim tail pipe usually.Vapor pipe is connected with vacuum pump; After vacuum device under the vacuum pump effect reaches the vacuum tightness requirement; High temperature and make its fusing in addition often in certain part of vapor pipe; The partial melting that under pull of vacuum effect and the effect of material surface expansive force, is heated vapor pipe shrinks gradually, and when the vapor pipe endoporus was retracted to inwall and is sticked together, the vacuum chamber that vacuum device is communicated with vacuum pump was separated into two independently airtight vacuum cavitys.Thereby can vacuum device be separated with vacuum pump.This process is claimed the fusion sealed-off usually.
Methods for the vapor pipe local heating are to concern vapor pipe fusion sealed-off quality, the key of sealed-off efficient.At present common using gas flame heating and resistive heating.
The normally artificial hand-held torch operation of gas flame heating, because gas flame is difficult to reach the even heating to vapor pipe, vapor pipe is easy to generate fine fisssure; Quality is unstable, and yield rate is low, in addition manual operation torch work under bad environment; Also there are potential safety hazard in inefficiency, gaseous combustion.
This type of heating such as number of patent application 200520129802.9,201020502497.4 were heated in energising around resistive heating normally was centered around vapor pipe with wire spiral; Though can carry out even heating to vapor pipe, receive the restriction of existing thermo electric material, the high temperature that under atmospheric environment, produces is limited, and heat-up time is long, and efficient is low.Superheating temperature to vapor pipe material Heating temperature is little, and vapor pipe is difficult to quilt fusing automatically, often still has filament to link to each other, and needs manual work with its disconnection, and production efficiency is low.Be not easy to realize automatic production.Present in addition resistive heating device damages easily, and the life-span is very short, and production cost is high.This resistive heating sealing device can not be accomplished the more fusion sealed-off of the vacuum device of materials with high melting point, like quartz etc.
Summary of the invention
The utility model has overcome the shortcoming of flame heating and resistive heating, provides the fusion of a kind of vacuum device electromagnetic induction heating automatic sealed-off stove, and producing the pyritous element is heating element; Have through hole on the heating element, the vapor pipe of vacuum device passes from the hole, after feeding alternating-current, in heating element, produces eddy current and generates heat near the electromagnetic induction coil of heating element; Through the local heating of heating element inner hole wall to vapor pipe, rate of heating is fast, and temperature is high and even; Material-to-be-heated do not have a stress concentration phenomenon; Seal smoothly, do not have crackle, quality product and production efficiency improve.Electromagnetic induction coil does not directly contact with heating element, and is simple in structure, long service life.The more important thing is and select superhigh temperature resistant for use; Oxidation resistant conductive material can make the heating element temperature reach 2300 ℃ and above temperature in atmosphere; Be higher than the resistive heating temperature far away, vapor pipe is easy in fusion sealed-off process, fused automatically, and whole sealed-off process is easy to realize robotization.Can accomplish the more automatic sealed-off of fusion of high-temperature material vacuum device, like quartz etc.
The technical scheme of the utility model is to achieve these goals: the automatic sealed-off stove of a kind of vacuum device electromagnetic induction heating fusion, and it comprises heating element, insulcrete; Electromagnetic induction coil; Furnace shell, the bell body is included in electromagnetic shielding thin metal layer and heat insulating lamina in the bell body; Carry out the AC power that is electrically connected with electromagnetic induction coil, carry out the pressure pump that circulatory mediator is connected through insulation tube with electromagnetic induction coil.The electromagnetic induction coil that spirals below the heating element that has a through hole and last lower insulation plate that contains heating element and the lower insulation plate, vacuum device vapor pipe pass heating element and be connected vacuum pump and be communicated with the pipeline of vapor pipe.When electromagnetic induction coil is connected alternating-current; Near producing the alternation induction field in the heating element of electromagnetic induction coil; Then produce eddy current, the high temperature that eddy current produces heats the part of vapor pipe and makes its fusion, under pull of vacuum and the effect of material surface tension force, shrinks; When the partial melting of vapor pipe when inwall is sticked together; The vacuum chamber that vacuum device is communicated with vacuum pump is separated into two independently airtight vacuum cavitys, thereby vacuum device is separated with vacuum pump, promptly accomplishes fusion sealed-off process.
Said heating element is a conductor, and said conductor comprises metal, and metal alloy is nonmetal, pottery, and sintering metal or matrix material have through hole at all interior electrical conductor on the heating element conductor, have the vapor pipe of vacuum device to pass in the heating element through hole.
Said insulcrete is a high-temperature insulation material, and the insulcrete position is around heating element.
Said electromagnetic induction coil material is a conductor, and said conductor comprises copper, aluminium, and iron is at all interior metallic substance or their alloy material.
The section of said electromagnetic induction coil is the pipe of hollow, and the electromagnetic induction coil section form is circular, square, and trilateral is in all interior geometrical shapies or its arbitrary combination shape.Circulate heat-eliminating medium in the electromagnetic induction coil section and pass through, heat-eliminating medium comprises water, oil, and air is at all interior thermally conductive materials.
Said electromagnetic induction coil is carried out electrical connection with AC power and is connected with pressure pump through insulation tube at the electromagnetic induction coil end.Power supply that electromagnetic induction coil connects is an AC power, comprises power frequency, intermediate frequency, and high frequency is in the AC power of all interior frequency bands.
The position of said electromagnetic induction coil is included in the below of heating element, top and on every side, and the helical shaped of electromagnetic induction coil comprises round square position, cylindrical drum, square square position, the square column tube is in all interior geometrical shapies or arbitrary combination shape.The electromagnetic induction coil number of turn can be 1 to the number circles.
Said furnace shell, the material of bell body is a high-temperature insulation material, and the electromagnetic shielding thin metal layer is arranged in the bell body; The electromagnetic shielding metallic substance comprises copper, aluminium, and stainless steel is at all interior conductors; Electromagnetic shielding thin metal layer quantity comprises 1 to multilayer; The high-temperature insulation material thin layer is arranged in the bell, and the high-temperature insulation material number of layers comprises 1 to multilayer, electromagnetic shielding thin metal layer and the stack of high-temperature insulation interlaminate.
The beneficial effect of the utility model is: compare existing flame heating and resistive heating vacuum device fusion sealed-off technology; Vapor pipe adds at electromagnetic induction and is heated in the process evenly; The sealed-off position does not have crackle, and fusion sealed-off quality improves greatly, and heating temp is high; Superheating temperature is big, and vapor pipe is fused automatically.Sealed-off speed is fast, and sealed-off efficient is high.Can carry out the fusion sealed-off to more dystectic material, safety and environmental protection is realized automatic production easily.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is a kind of structural representation of the utility model.
Among the figure: 1 furnace shell, 2 insulcretes, 3 lagging materials, 4 heating elements, 5 electromagnetic shielding thin metal layers, 6 heat insulating laminas, 7 bell bodies, 8 vacuum device vapor pipes, 9 electromagnetic induction coils, 10 connect the terminal stud of AC power, the insulation tube, 12 of 11 connection pressure pumps connects the pipeline of vacuum pumps and vapor pipe.
Embodiment
As shown in Figure 1; The automatic sealed-off stove of vacuum device electromagnetic induction heating fusion; Comprise the electromagnetic induction coil 9 that spirals below heating element 4 and last lower insulation plate 2 that contains heating element and the lower insulation plate, the terminal stud 10 of connection AC power is arranged, on the electromagnetic induction coil 9 through terminal stud; Electromagnetic induction coil is carried out with AC power and is electrically connected, and electromagnetic induction coil 9 ends are connected with the insulation tube that is connected pressure pump 11.With vacuum device vapor pipe 8 pass heating element 4 and be connected vacuum pump and be communicated with the pipeline 12 of vapor pipe; Opening pressure pump and vacuum pump; After the vacuum tightness of vacuum part reaches requirement, connect AC power and make electromagnetic induction coil 9 energisings, when having alternating current to pass through in the electromagnetic induction coil 9; There is the alternation induction field to produce in the heating element 4 near electromagnetic induction coil 9; Thereby in heating element 4, produce eddy current, the high temperature that eddy current produces in the heating element 4 heats the part of vapor pipe 8 and makes its fusion, under the surface tension effects of pull of vacuum and material, shrinks gradually; When the partial melting of vapor pipe 8 when inwall is sticked together, the vacuum chamber that vacuum device is communicated with vacuum pump is separated into two independently airtight vacuum cavitys.Thereby can vacuum device be separated with vacuum pump.Promptly accomplish fusion sealed-off process.Because the temperature that the utility model heating unit produces is high, superheating temperature is fully big, and the viscosity of material diminishes, and vapor pipe is broken off by automatic fusion, can accomplish the automatic sealed-off of fusion of vapor pipe.
Lagging material 3 is distributed in around the heating element 4, can reduce the calorific loss of heating element 4.
In above working process, be full of mobile heat-eliminating medium in the electromagnetic induction coil 9, the heat under the effect of pressure pump in the electromagnetic induction coil 9 constantly is recycled the heat-eliminating medium that flows and takes away, and prevents that electromagnetic induction coil 9 is melted.
In electromagnetic induction coil 9 energising work, there is stronger EM field to produce; Electromagnetic shielding thin metal layer 5 and alternately stack of heat insulating lamina 6 on the bell body 7; Can effectively shield EM field, prevent that the product of bell body 7 outsides or equipment from receiving EMI destruction from electromagnetic induction coil 9.While electromagnetic shielding thin metal layer 5 and heat insulating lamina 6 alternately stack also reflect effectively and have intercepted the high temperature from heating element 3, have prevented that heating element 3 high temperature are for the product of bell body 7 outsides or the destruction of equipment.
More than be merely the preferred embodiment of the utility model; Be not that scope to the utility model limits; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
1. the automatic sealed-off stove of vacuum device electromagnetic induction heating fusion is used for solar energy vacuum tube, and the vapor pipe of picture tube etc. carries out the fusion sealed-off; Comprise heating element, insulcrete, electromagnetic induction coil; Furnace shell, the bell body is included in electromagnetic shielding thin metal layer and heat insulating lamina in the bell body; Carry out the AC power is electrically connected with electromagnetic induction coil, carry out the pressure pump that circulatory mediator is connected through insulation tube, have the electromagnetic induction coil that spirals below last lower insulation plate and the lower insulation plate of heating element and containing heating element of through hole with electromagnetic induction coil is terminal; The vacuum device vapor pipe pass heating element and be connected vacuum pump and be communicated with the pipeline of vapor pipe; When electromagnetic induction coil is connected alternating-current,, produce eddy current then near producing the alternation induction field in the heating element of electromagnetic induction coil; The high temperature that eddy current produces heats the part of vapor pipe and makes its fusion; Under pull of vacuum and the effect of material surface tension force, shrink, when the partial melting of vapor pipe when inwall is sticked together, the vacuum chamber that vacuum device is communicated with vacuum pump is separated into two independently airtight vacuum cavitys; Thereby vacuum device is separated with vacuum pump, promptly accomplish fusion sealed-off process.
2. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion; It is characterized in that; Said heating element is a conductor, and the material of said conductor comprises all electrical conductor of metal, metal alloy, nonmetal, ceramic, sintering metal or its matrix material; Have through hole on the heating element conductor, have the vapor pipe of vacuum device to pass in the heating element through hole.
3. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion is characterized in that said insulcrete is a high-temperature insulation material, and the insulcrete position is around heating element.
4. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion is characterized in that said electromagnetic induction coil material is a conductor, and conductor material comprises all metallic substance of copper, aluminium, iron or their alloy material.
5. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion; It is characterized in that; The section of said electromagnetic induction coil is the pipe of hollow, and the electromagnetic induction coil section form is that circular, square, trilateral is in all interior geometrical shapies or its arbitrary combination shape; Circulate heat-eliminating medium in the coil section and pass through, heat-eliminating medium comprises all heat conduction materials of water, oil or air.
6. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion is characterized in that, said electromagnetic induction coil is carried out electrical connection with AC power and is connected with pressure pump through insulation tube at the electromagnetic induction coil end; Power supply that electromagnetic induction coil connects is an AC power, comprises the AC power of all frequency bands of power frequency, intermediate frequency or high frequency.
7. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion; It is characterized in that; The position of said electromagnetic induction coil is included in the below, top of heating element and on every side, and the helical shaped of electromagnetic induction coil comprises all geometrical shapies or its arbitrary combination shape of round square position, cylindrical drum, square square position, square column tube; The electromagnetic induction coil number of turn can be 1 to the number circles.
8. the automatic sealed-off stove of vacuum device electromagnetic induction heating according to claim 1 fusion; It is characterized in that; The material of said furnace shell, bell body is a high-temperature insulation material, and the electromagnetic shielding thin metal layer is arranged in the bell body, and the electromagnetic shielding metallic substance comprises all conductors of copper, aluminium, stainless steel; Electromagnetic shielding thin metal layer quantity comprises 1 to multilayer; The high-temperature insulation material thin layer is arranged in the bell, and the high-temperature insulation material number of layers comprises 1 to multilayer, electromagnetic shielding thin metal layer and the stack of high-temperature insulation interlaminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205236474U CN202543039U (en) | 2011-12-15 | 2011-12-15 | Automatic sealing-off furnace for vacuum device by means of electromagnetic induction heating fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205236474U CN202543039U (en) | 2011-12-15 | 2011-12-15 | Automatic sealing-off furnace for vacuum device by means of electromagnetic induction heating fusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202543039U true CN202543039U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205236474U Expired - Fee Related CN202543039U (en) | 2011-12-15 | 2011-12-15 | Automatic sealing-off furnace for vacuum device by means of electromagnetic induction heating fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202543039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567044A (en) * | 2015-01-20 | 2015-04-29 | 四季沐歌(洛阳)太阳能有限公司 | Baking exhausting device for solar vacuum heat collection pipe |
| CN110062572A (en) * | 2019-05-30 | 2019-07-26 | 潘可 | One kind is whole to open whole pass formula magnetic shielding device detachable cap |
-
2011
- 2011-12-15 CN CN2011205236474U patent/CN202543039U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567044A (en) * | 2015-01-20 | 2015-04-29 | 四季沐歌(洛阳)太阳能有限公司 | Baking exhausting device for solar vacuum heat collection pipe |
| CN110062572A (en) * | 2019-05-30 | 2019-07-26 | 潘可 | One kind is whole to open whole pass formula magnetic shielding device detachable cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20151215 |
|
| EXPY | Termination of patent right or utility model |