CN102807314A - Heating device for flat glass - Google Patents
Heating device for flat glass Download PDFInfo
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- CN102807314A CN102807314A CN2011101494382A CN201110149438A CN102807314A CN 102807314 A CN102807314 A CN 102807314A CN 2011101494382 A CN2011101494382 A CN 2011101494382A CN 201110149438 A CN201110149438 A CN 201110149438A CN 102807314 A CN102807314 A CN 102807314A
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- glass
- radiation
- convection
- pipe
- heating unit
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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
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Abstract
The invention discloses a heating device for flat glass. Key points are that: the heating temperature inside a furnace cavity is controlled through the temperature of a heater arranged at the air inlet of a thermal circulating fan; and the temperature of each radiation-convection pipe and the convection heating strength on glass can be controlled through the magnitude of high-temperature gas flow (or pressure) in each pipe. Each radiation-convection pipe is arranged close to the upper and lower surfaces of the glass along the longitudinal direction (the conveying direction of the glass), so that a continuous and uniform radiation-convection zone is formed on a whole for performing radiation and convection heating on the entire upper and lower surfaces of the glass. Convection heating air flow is generated by the thermal circulating fan arranged inside the cavity, and an internal circulating air course is formed inside the furnace cavity, so that heat energy of the heater in a working process is transmitted to the glass surface continuously.
Description
Technical field
The present invention relates to a kind of heating unit, the heating unit of the sheet glass in particularly a kind of glass tempering technology.
Background technology
Heating installation to two kinds of sheet glass that occur on the market compares.First kind is that its heating unit is arranged on thermal circulation fan blast inlet place; Its radiation and convection pipe is arranged near the upper and lower surfaces of glass along horizontal (promptly the throughput direction with glass is vertical); And the flow or the pressure that flow into the high temperature gas flow of each radiation and convection pipe can not independent control; Thereby cause at the heating installation width and can not carry out the control of subregion temperature, for more roomy glass, the overheated and middle underheating of both sides portion often appears; Cause waveform distortion and the arcuate deformation of glass behind the blowing tempering to increase, optical property descends.
Second kind is that heating unit and convection tubes all vertically are arranged near the upper and lower surfaces of glass, but convection gas is to be produced by external cold conditions pressurized air.During this heating installation work, need the long period to inject cold conditions pressurized air to its inner chamber, cause chamber pressure to raise and have to and discharge high temperature air to the external world for a long time, this just causes the production process energy waste excessive, and the production cost of glass is raising thereupon also.
Summary of the invention
Middle plateform glass heats device of the present invention has carried out innovation to the weak point of the heating installation of above-mentioned two kinds of existing sheet glass and has improved,
For solving the problems of the technologies described above, a kind of heating unit of sheet glass is arranged in the furnace chamber of body of heater; Wherein, comprise that a plurality of thermal circulation fans are uniformly distributed in said furnace chamber inside, well heater is arranged in the blast inlet place of said thermal circulation fan; The air outlet of main ventilation pipe and said thermal circulation fan links; A plurality of radiation and convection pipes are arranged in the near surface of glass, and said radiation and convection pipe leaves blowhole near a side of glass, and said main ventilation pipe is connected with every radiation and convection pipe.
Wherein, near said a plurality of radiation and convection pipe is arranged in parallel in the upper and lower surfaces of glass along the throughput direction of glass.
Wherein, the position that every radiation and convection pipe of said main ventilation Guan Shangyu is connected all is furnished with a control damper, gets into the airshed in the radiation and convection pipe with control from said main ventilation pipe.
Wherein, Said control damper comprises valve body, valve body union lever and valve opening, and the size of said valve body and valve opening adapts, and can block valve opening fully; Said valve body connects displacement controller through the valve body union lever, and said displacement controller is in order to the gap between adjustment valve body and the valve opening.
Wherein, said displacement controller is arranged in said furnace chamber outer body of heater top or bottom.
Wherein, said thermal circulation fan is fixed on the sidewall of the furnace body, and said radiation and convection pipe and main ventilation pipe are through hanging or supporting rod is fixed on body of heater top or bottom in the said furnace chamber.
Wherein, said thermal circulation fan motor connects external frequency transformer, by said external Frequency Converter Control thermal circulation fan rotating speed of motor, gets into the stream pressure and the flow of said main ventilation pipe with control.
Wherein, said well heater is provided with measures first thermopair that temperature is used, and the outside components and parts of control automatically connect said first thermopair and well heater, with automatic adjustment heater temperature.
Wherein, be furnished with second thermopair near the sidewall of said radiation and convection pipe, said outside is controlled components and parts automatically and is connected said second thermopair and displacement controller, with the gap between self regulating valve body and the valve opening.
Wherein, the drive unit of said displacement controller is realized by cylinder, oil cylinder or the motor of controlled stroke.
The useful technique effect that the present invention reaches is: the temperature of the well heater of the inner Heating temperature of furnace chamber through being arranged in thermal circulation fan blast inlet place is controlled, and the temperature of each radiation and convection pipe and can control through the size that flows into each high-temperature gas flow (or pressure) in managing the convective heating intensity of glass.Each radiation and convection pipe longitudinally (being the throughput direction of glass) is arranged near the upper and lower surfaces of glass, and continuously uniform radiation and convection band of whole formation carries out radiation and convective heating to the whole upper and lower surfaces of glass.The convective heating air-flow is produced by the thermal circulation fan that is installed in inside cavity; Form the circulating inside wind path in the furnace chamber; Realized that the heat energy of well heater continuously is delivered to glass surface in the working process, made the both sides and the middle even heating of sheet glass, and reduced production cost.
Description of drawings
Fig. 1 is the front view of the heating unit of sheet glass of the present invention;
Fig. 2 be among Fig. 1 A-A to sectional view;
Fig. 3 be among Fig. 1 B-B to sectional view;
Fig. 4 be among Fig. 1 C-C to sectional view;
Fig. 5 be among Fig. 1 D-D to sectional view.
Description of reference numerals
1-radiation and convection pipe, 2-main ventilation pipe, 3-thermal circulation fan, 4-valve body, 5-valve body union lever, 6-displacement controller, 7-roller-way, 8-glass, 9-body of heater, 10-first thermopair, 11-well heater, 12-second thermopair, 13-valve opening, 14-burner hearth.
Embodiment
For shape of the present invention, structure and characteristics can be understood better, below will enumerate preferred embodiment and combine accompanying drawing to be elaborated.
To be the inner Heating temperature of furnace chamber 14 control through the temperature of the well heater 11 that is arranged in thermal circulation fan 3 blast inlet places core of the present invention, and the temperature of each radiation and convection pipe 1 and can control through the size that flows into each high-temperature gas flow (or pressure) in managing the convective heating intensity of glass 8.Each radiation and convection pipe 1 longitudinally (being the throughput direction of glass) is arranged near the upper and lower surfaces of glass 8, and continuously uniform radiation and convection band of whole formation carries out even heating to the whole upper and lower surfaces of glass 8.
Wherein high temperature gas flow inflow radiation and convection pipe 1 can heat radiation and convection pipe 1, can carry out radiation heating to glass 8 through the radiation and convection pipe 1 that heats; Side near glass 8 on each radiation and convection pipe 1 leaves blowhole, and high temperature gas flow blows to glass 8 surfaces through blowhole, can carry out convective heating to glass 8, and the radiation heating and the convective heating of glass all realized the heat transmission through high temperature gas flow.The convective heating air-flow produces by being installed in furnace chamber 14 inner thermal circulation fans, forms the circulating inside wind path in the furnace chamber 14, has realized that the heat energy of well heater 11 continuously is delivered to glass 8 surfaces in the working process.
Fig. 1-the 5th, the front view of the heating unit of sheet glass of the present invention and the sectional view of each position.Can find out that from accompanying drawing 1-5 a plurality of thermal circulation fans 3 are uniformly distributed in furnace chamber 14 inside, well heater 11 centralized arrangement are at the blast inlet place of thermal circulation fan 3 and directly glass is not heated.Well heater 11 1 end openings and furnace chamber 14 link, and the blast inlet of the other end opening and thermal circulation fan 3 is UNICOM fixedly; The end of main ventilation pipe 2 is connected with the air outlet of thermal circulation fan 3.
A plurality of radiation and convection pipes 1 longitudinally (being the throughput direction of glass 8) are arranged in parallel in the near surface of glass, and its side near glass 8 leaves blowhole.The position that is connected with every radiation and convection pipe 1 on the main ventilation pipe 2 all is furnished with a control damper, to control the airshed that gets in the every radiation and convection pipe 1 from main ventilation pipe 2.
This control damper mainly is made up of valve body 4, valve body union lever 5, valve opening 13, and the size of valve body 4 and valve opening 13 adapts, and can block valve opening 13 fully.Valve body 4 connects displacement controller 6 through valve body union lever 5, moves up and down the gap S between adjustment valve body 4 and the valve opening 13 with application valve body 4.Displacement controller 6 is arranged in body of heater 9 tops or the bottom outside the furnace chamber 14, to avoid temperatures involved.
The gas flow temperature that gets into thermal circulation fan 3 is measured by first thermopair 10 that is installed on the well heater 11, and first thermopair 10 is connected with the outside components and parts of control automatically.The temperature that the outside components and parts of control automatically measure according to first thermopair 10 is controlled adjustment well heater 11 temperature as required automatically, can realize that gas flow temperature is all controlled according to processing requirement in each time period automatically in the entire work process.
The motor of thermal circulation fan 3 connects external frequency transformer; The stream pressure and the flow that get into main ventilation pipe 2 are realized by external Frequency Converter Control thermal circulation fan 3 rotating speed of motor; When needs stream pressure and flow rising; Then improve supply frequency and then improve motor speed, get final product otherwise then reduce supply frequency.
The stream pressure and the flow size that flow into every radiation and convection pipe 1 are controlled by corresponding with it control damper; Valve body 4 links with valve body union lever 5; Valve body union lever 5 links the gap S between displacement controller 6 application valve bodies 4 and the valve opening 13 with the displacement controller 6 that is arranged in body of heater 9 tops or bottom.When the S value increased, the stream pressure and the flow that flow into this radiation and convection pipe 1 increased, and the yield of radiation and the convection intensity of 1 pair of glass 8 of this radiation and convection pipe also increase; Otherwise when the S value reduced, the yield of radiation and the convection intensity of 1 pair of glass 8 of this radiation and convection pipe also reduced.
Be furnished with one second thermopair 12 near the sidewall of every radiation and convection pipe 1; The outside components and parts of control automatically are connected with displacement controller 6 with second thermopair 12; Instruction is handled and sent to the outside components and parts of control automatically according to temperature and preset processing requirement temperature that second thermopair 12 records, thereby cause the gap S between displacement controller 6 action adjustment valve bodies and the valve opening.In the practical application, the drive unit of displacement controller 6 is realized by cylinder, oil cylinder or the motor of controlled stroke.
The useful technique effect that the present invention reaches is: the temperature of the well heater of the inner Heating temperature of furnace chamber through being arranged in thermal circulation fan blast inlet place is controlled, and the temperature of each radiation and convection pipe and can control through the size that flows into each high-temperature gas flow (or pressure) in managing the convective heating intensity of glass.Each radiation and convection pipe longitudinally (being the throughput direction of glass) is arranged near the upper and lower surfaces of glass, and continuously uniform radiation and convection band of whole formation carries out radiation and convective heating to the whole upper and lower surfaces of glass.The convective heating air-flow is produced by the thermal circulation fan that is installed in inside cavity; Form the circulating inside wind path in the furnace chamber; Realized that the heat energy of well heater continuously is delivered to glass surface in the working process, made the both sides and the middle even heating of sheet glass, and reduced production cost.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and within spirit that claim limits and scope, can carry out many modifications, variation or equivalence to it, but they will fall in protection scope of the present invention all.
Claims (10)
1. the heating unit of a sheet glass is arranged in the furnace chamber of body of heater, it is characterized in that; Comprise that a plurality of thermal circulation fans are uniformly distributed in said furnace chamber inside; Well heater is arranged in the blast inlet place of said thermal circulation fan, and the air outlet of main ventilation pipe and said thermal circulation fan links, and a plurality of radiation and convection pipes are arranged in the near surface of glass; Said radiation and convection pipe leaves blowhole near a side of glass, and said main ventilation pipe is connected with every radiation and convection pipe.
2. the heating unit of sheet glass as claimed in claim 1 is characterized in that, near said a plurality of radiation and convection pipes are arranged in parallel in the upper and lower surfaces of glass along the throughput direction of glass.
3. the heating unit of sheet glass as claimed in claim 1; It is characterized in that; The position that every radiation and convection pipe of said main ventilation Guan Shangyu is connected all is furnished with a control damper, gets into the airshed in the radiation and convection pipe with control from said main ventilation pipe.
4. the heating unit of sheet glass as claimed in claim 3; It is characterized in that; Said control damper comprises valve body, valve body union lever and valve opening, and the size of said valve body and valve opening adapts, and can block valve opening fully; Said valve body connects displacement controller through the valve body union lever, and said displacement controller is in order to the gap between adjustment valve body and the valve opening.
5. the heating unit of sheet glass as claimed in claim 1 is characterized in that, said displacement controller is arranged in said furnace chamber outer body of heater top or bottom.
6. the heating unit of sheet glass as claimed in claim 1 is characterized in that, said thermal circulation fan is fixed on the sidewall of the furnace body, and said radiation and convection pipe and main ventilation pipe are through hanging or supporting rod is fixed on body of heater top or bottom in the said furnace chamber.
7. the heating unit of sheet glass as claimed in claim 1; It is characterized in that; Said thermal circulation fan motor connects external frequency transformer, by said external Frequency Converter Control thermal circulation fan rotating speed of motor, gets into the stream pressure and the flow of said main ventilation pipe with control.
8. the heating unit of sheet glass as claimed in claim 4 is characterized in that, said well heater is provided with measures first thermopair that temperature is used, and the outside components and parts of control automatically connect said first thermopair and well heater, with automatic adjustment heater temperature.
9. the heating unit of sheet glass as claimed in claim 8; It is characterized in that; Be furnished with second thermopair near the sidewall of said radiation and convection pipe, said outside is controlled components and parts automatically and is connected said second thermopair and displacement controller, with the gap between self regulating valve body and the valve opening.
10. the heating unit of sheet glass as claimed in claim 5 is characterized in that, the drive unit of said displacement controller is realized by cylinder, oil cylinder or the motor of controlled stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110149438.2A CN102807314B (en) | 2011-06-03 | 2011-06-03 | Heating device for plate glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110149438.2A CN102807314B (en) | 2011-06-03 | 2011-06-03 | Heating device for plate glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102807314A true CN102807314A (en) | 2012-12-05 |
| CN102807314B CN102807314B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110149438.2A Active CN102807314B (en) | 2011-06-03 | 2011-06-03 | Heating device for plate glass |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2701860Y (en) * | 2004-06-08 | 2005-05-25 | 赵雁 | Convection type glass plate heating furnace |
| US20070220921A1 (en) * | 2004-05-27 | 2007-09-27 | Yan Zhao | Glass Heating Furnance with Opposing Gas Streams |
| CN101767927A (en) * | 2009-01-07 | 2010-07-07 | 洛阳兰迪玻璃机器有限公司 | Method for setting high temperature gas spout in convection type glass plate heating furnace and application thereof |
| CN101844864A (en) * | 2009-03-24 | 2010-09-29 | 北京京东方光电科技有限公司 | Glass substrate and cutting method thereof |
| CN201756501U (en) * | 2010-08-06 | 2011-03-09 | 杭州精工机械有限公司 | Radiation heating furnace with external circulation device |
| CN202107625U (en) * | 2011-06-03 | 2012-01-11 | 洛阳北方玻璃技术股份有限公司 | Heating device of plate glass |
-
2011
- 2011-06-03 CN CN201110149438.2A patent/CN102807314B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070220921A1 (en) * | 2004-05-27 | 2007-09-27 | Yan Zhao | Glass Heating Furnance with Opposing Gas Streams |
| CN2701860Y (en) * | 2004-06-08 | 2005-05-25 | 赵雁 | Convection type glass plate heating furnace |
| CN101767927A (en) * | 2009-01-07 | 2010-07-07 | 洛阳兰迪玻璃机器有限公司 | Method for setting high temperature gas spout in convection type glass plate heating furnace and application thereof |
| CN101844864A (en) * | 2009-03-24 | 2010-09-29 | 北京京东方光电科技有限公司 | Glass substrate and cutting method thereof |
| CN201756501U (en) * | 2010-08-06 | 2011-03-09 | 杭州精工机械有限公司 | Radiation heating furnace with external circulation device |
| CN202107625U (en) * | 2011-06-03 | 2012-01-11 | 洛阳北方玻璃技术股份有限公司 | Heating device of plate glass |
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| CN102807314B (en) | 2015-06-17 |
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