CN102807314B - Heating device for plate glass - Google Patents

Heating device for plate glass Download PDF

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Publication number
CN102807314B
CN102807314B CN201110149438.2A CN201110149438A CN102807314B CN 102807314 B CN102807314 B CN 102807314B CN 201110149438 A CN201110149438 A CN 201110149438A CN 102807314 B CN102807314 B CN 102807314B
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CN
China
Prior art keywords
glass
radiation
convection
valve
pipe
Prior art date
Application number
CN201110149438.2A
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Chinese (zh)
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CN102807314A (en
Inventor
高学林
白雪峰
Original Assignee
洛阳北方玻璃技术股份有限公司
上海北玻玻璃技术工业有限公司
上海北玻镀膜技术工业有限公司
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Application filed by 洛阳北方玻璃技术股份有限公司, 上海北玻玻璃技术工业有限公司, 上海北玻镀膜技术工业有限公司 filed Critical 洛阳北方玻璃技术股份有限公司
Priority to CN201110149438.2A priority Critical patent/CN102807314B/en
Publication of CN102807314A publication Critical patent/CN102807314A/en
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Publication of CN102807314B publication Critical patent/CN102807314B/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

A heating device for plate glass is characterized in that: the heating temperature inside the furnace chamber is controlled by the temperature of the heater disposed at the air inlet of the heat circulation fan, and the temperature of each radiation convection pipe and the convection heating intensity of the glass are controlled by the flow (or pressure) of the high-temperature gas flowing into each pipe. The radiant convection tubes are arranged near the upper and lower surfaces of the glass along the longitudinal direction (i.e. the conveying direction of the glass), and a continuous and uniform radiant convection zone is integrally formed to perform radiant and convection heating on the whole upper and lower surfaces of the glass. Convection heating airflow is generated by a heat circulation fan arranged in the cavity, an internal circulation air path is formed in the furnace chamber, and heat energy of the heater is continuously transferred to the surface of the glass in the working process.

Description

The heating unit of sheet glass
Technical field
The present invention relates to a kind of heating unit, the heating unit of the sheet glass particularly in a kind of glass tempering technology.
Background technology
Heating installation for two kinds of sheet glass that market occurs compares.The first is that its heating unit is arranged on thermal circulation fan air inlet, its radiation and convection pipe transversely (namely vertical with the throughput direction of glass) is arranged near the upper and lower surface of glass, and flow into the flow of the high temperature gas flow of each radiation and convection pipe or pressure can not control separately, thus cause and can not carry out zone temperature control at heating installation width, for more roomy glass, often there is the overheated and middle underheating of two edge, cause glass blowing tempering after waveform distortions and arcuate deformation increase, optical property decline.
The second is that heating unit and convection tubes are all longitudinally arranged near the upper and lower surface of glass, but convection gas is produced by external cold conditions pressurized air.During the work of this heating installation, need the long period to inject cold conditions pressurized air to its inner chamber, cause chamber pressure raise and have to outwardly discharge high temperature air for a long time, this just causes production process energy waste excessive, and the production cost of glass also improves thereupon.
Summary of the invention
Middle plateform glass heats device of the present invention, the weak point for the heating installation of above-mentioned two kinds of existing sheet glass has carried out innovating improving,
For solving the problems of the technologies described above, a kind of heating unit of sheet glass, be arranged in the furnace chamber of body of heater, wherein, comprise multiple thermal circulation fan and be uniformly distributed in described furnace chamber inside, well heater is arranged in the air inlet of described thermal circulation fan, the air outlet of main ventilation pipe and described thermal circulation fan is connected, multiple radiation and convection pipes are arranged in the near surface of glass, described radiation and convection pipe leaves blowhole near the side of glass, described main ventilation pipe is connected with every root radiation and convection pipe, the position that described main ventilation Guan Shangyu every root radiation and convection pipe is connected all is furnished with a control damper, to control the airshed entered from described main ventilation pipe in radiation and convection pipe, described control damper comprises valve body, valve body union lever and valve opening, the size of described valve body and valve opening adapts, valve opening can be blocked completely, described valve body is by valve body union lever connection bit shift controller, described displacement controller is in order to adjust the gap between valve body and valve opening, described well heater is provided with the first thermopair of measuring tempeature, outside balancing boom device automatically connects described first thermopair and well heater, automatically to adjust heater temperature, the adjacent sidewalls of described radiation and convection pipe is furnished with the second thermopair, described outside automatic balancing boom device connects described second thermopair and displacement controller, with the gap between self regulating valve body and valve opening.
Wherein, described multiple radiation and convection pipe is arranged in parallel near the upper and lower surface of glass along the throughput direction of glass.
Wherein, described displacement controller is arranged in body of heater top outside described furnace chamber or bottom.
Wherein, described thermal circulation fan is fixed on sidewall of the furnace body, and described radiation and convection pipe and main ventilation pipe are fixed on body of heater top in described furnace chamber or bottom by hanging or supporting rod.
Wherein, described thermal circulation fan motor connects external frequency transformer, by the rotating speed of described external Frequency Converter Control thermal circulation fan motor, to control the stream pressure and the flow that enter described main ventilation pipe.
Wherein, the drive unit of described displacement controller is realized by the cylinder of controlled stroke, oil cylinder or motor.
The Advantageous Effects that the present invention reaches is: the Heating temperature of furnace chamber inside is controlled by the temperature being arranged in the well heater of thermal circulation fan air inlet, and the temperature of each radiation and convection pipe and the convective heating intensity of glass is controlled by the size flowing into the high-temperature gas flow (or pressure) in each pipe.Each radiation and convection pipe longitudinally (i.e. the throughput direction of glass) is arranged near the upper and lower surface of glass, and the overall whole upper and lower surface of radiation and convection band to glass forming a continuous uniform carries out radiation and convective heating.Convective heating air-flow is produced by the thermal circulation fan being arranged on inside cavity, internal recycling wind path is formed in furnace chamber, achieve the heat energy of well heater in working process and be continuously delivered to glass surface, make the both sides of sheet glass and middle homogeneous heating, and reduce production cost.
Accompanying drawing explanation
Fig. 1 is the front view of the heating unit of sheet glass of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 be in Fig. 1 B-B to sectional view;
Fig. 4 be in Fig. 1 C-C to sectional view;
Fig. 5 be in 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
In order to enable shape of the present invention, structure and feature be understood better, below will enumerate preferred embodiment and being described in detail by reference to the accompanying drawings.
Core of the present invention is that the Heating temperature of furnace chamber 14 inside is controlled by the temperature of the well heater 11 being arranged in thermal circulation fan 3 air inlet, and the temperature of each radiation and convection pipe 1 and convective heating intensity of glass 8 is controlled by the size flowing into the high-temperature gas flow (or pressure) in each pipe.Each radiation and convection pipe 1 longitudinally (i.e. the throughput direction of glass) is arranged near the upper and lower surface of glass 8, and the overall whole upper and lower surface of radiation and convection band to glass 8 forming a continuous uniform carries out homogeneous heating.
Wherein high temperature gas flow inflow radiation and convection pipe 1 can heat radiation and convection pipe 1, and the radiation and convection pipe 1 through heating can carry out radiation heating to glass 8; Each radiation and convection pipe 1 leaves blowhole near the side of glass 8, and high temperature gas flow blows to glass 8 surface by blowhole, can carry out convective heating to glass 8, all realizes heat transmission by high temperature gas flow to the radiation heating of glass and convective heating.Convective heating air-flow is produced by the thermal circulation fan being arranged on furnace chamber 14 inside, forms internal recycling wind path in furnace chamber 14, and the heat energy achieving well heater 11 in working process is continuously delivered to glass 8 surface.
Fig. 1-5 is the front view of the heating unit of sheet glass of the present invention and the sectional view of each position.As can be seen from accompanying drawing 1-5, it is inner that multiple thermal circulation fan 3 is uniformly distributed in furnace chamber 14, well heater 11 centralized arrangement thermal circulation fan 3 air inlet and directly glass is not heated.Well heater 11 one end open and furnace chamber 14 are connected, and the blast inlet of the other end opening and thermal circulation fan 3 fixes UNICOM; The end of main ventilation pipe 2 is connected with the air outlet of thermal circulation fan 3.
Multiple radiation and convection pipe 1 longitudinally (i.e. the throughput direction of glass 8) is arranged in parallel in the near surface of glass, and blowhole is left in its side near glass 8.The position that main ventilation pipe 2 is connected with every root radiation and convection pipe 1 is all furnished with a control damper, to control the airshed entered from main ventilation pipe 2 in every root radiation and convection pipe 1.
This control damper forms primarily 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 completely.Valve body 4, by valve body union lever 5 connection bit shift controller 6, moves up and down with application valve body 4, the gap S between adjustment valve body 4 and valve opening 13.Displacement controller 6 is arranged in body of heater 9 top outside furnace chamber 14 or bottom, to avoid temperatures involved.
Thermal circulation fan 3 is fixed on the sidewall of body of heater 9, and radiation and convection pipe 1 and main ventilation pipe 2 are fixed on top or bottom (rod member is in attached not shown in FIG.) of body of heater 9 by hanging (or support) rod member.
In working process, thermal circulation fan 3 operates continuously, suck low temperature, the low-pressure gas in furnace chamber 14, heater via 11 heats, again through thermal circulation fan 3 turbo-pressure, become required high temperature, high pressure gas, flow through main ventilation pipe 2 again, control damper, radiation and convection pipe 1 blow to glass 8 surface, achieve the heating to glass.
The gas flow temperature entering thermal circulation fan 3 is measured by the first thermopair 10 be arranged on well heater 11, and the first thermopair 10 is connected with the automatic balancing boom device in outside.The temperature obtained measured by outside balancing boom device automatically according to the first thermopair 10, automatically control adjustment well heater 11 temperature as required, can realize gas flow temperature in whole working process and all automatically control according to processing requirement in each time period.
The motor of thermal circulation fan 3 connects external frequency transformer, the stream pressure and the flow that enter main ventilation pipe 2 are realized by the rotating speed of external Frequency Converter Control thermal circulation fan 3 motor, when needs stream pressure and flow raise, then improve supply frequency and then improve motor speed, otherwise then reducing supply frequency.
The stream pressure and the uninterrupted that flow into every root radiation and convection pipe 1 are controlled by control damper corresponding with it, valve body 4 and valve body union lever 5 are connected, valve body union lever 5 is connected with the displacement controller 6 being arranged in body of heater 9 top or bottom, the gap S between displacement controller 6 application valve body 4 and valve opening 13.When S value increases, the stream pressure and the flow that flow into this radiation and convection pipe 1 increase, and yield of radiation and the convection intensity of this radiation and convection pipe 1 pair of glass 8 also increase; Otherwise when S value reduces, yield of radiation and the convection intensity of this radiation and convection pipe 1 pair of glass 8 also reduce.
The adjacent sidewalls of every root radiation and convection pipe 1 is furnished with second thermopair 12, outside balancing boom device is automatically connected with displacement controller 6 with the second thermopair 12, the temperature that outside balancing boom device automatically records according to the second thermopair 12 and predetermined process require that temperature carries out processing and sending instruction, cause displacement controller 6 action thus gap S between adjustment valve body and valve opening.In practical application, the drive unit of displacement controller 6 is realized by the cylinder of controlled stroke, oil cylinder or motor.
The Advantageous Effects that the present invention reaches is: the Heating temperature of furnace chamber inside is controlled by the temperature being arranged in the well heater of thermal circulation fan air inlet, and the temperature of each radiation and convection pipe and the convective heating intensity of glass is controlled by the size flowing into the high-temperature gas flow (or pressure) in each pipe.Each radiation and convection pipe longitudinally (i.e. the throughput direction of glass) is arranged near the upper and lower surface of glass, and the overall whole upper and lower surface of radiation and convection band to glass forming a continuous uniform carries out radiation and convective heating.Convective heating air-flow is produced by the thermal circulation fan being arranged on inside cavity, internal recycling wind path is formed in furnace chamber, achieve the heat energy of well heater in working process and be continuously delivered to glass surface, make the both sides of sheet glass and middle homogeneous heating, and reduce production cost.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and can carry out many amendments, change or equivalence, but they all will fall within the scope of protection of the present invention within the spirit and scope of claim restriction to it.

Claims (6)

1. the heating unit of a sheet glass, be arranged in the furnace chamber of body of heater, it is characterized in that, comprise multiple thermal circulation fan and be uniformly distributed in described furnace chamber inside, well heater is arranged in the air inlet of described thermal circulation fan, and the air outlet of main ventilation pipe and described thermal circulation fan is connected, and multiple radiation and convection pipes are arranged in the near surface of glass, described radiation and convection pipe leaves blowhole near the side of glass, and described main ventilation pipe is connected with every root radiation and convection pipe; The position that described main ventilation Guan Shangyu every root radiation and convection pipe is connected all is furnished with a control damper, to control the airshed entered from described main ventilation pipe in radiation and convection pipe; Described control damper comprises valve body, valve body union lever and valve opening, the size of described valve body and valve opening adapts, can block valve opening completely, described valve body is by valve body union lever connection bit shift controller, and described displacement controller is in order to adjust the gap between valve body and valve opening; Described well heater is provided with the first thermopair of measuring tempeature, and outside balancing boom device automatically connects described first thermopair and well heater, automatically to adjust heater temperature; The adjacent sidewalls of described radiation and convection pipe is furnished with the second thermopair, and described outside automatic balancing boom device connects described second thermopair and displacement controller, with the gap between self regulating valve body and valve opening.
2. the heating unit of sheet glass as claimed in claim 1, it is characterized in that, described multiple radiation and convection pipe is arranged in parallel near the upper and lower surface of glass along the throughput direction of glass.
3. the heating unit of sheet glass as claimed in claim 1, is characterized in that, described displacement controller is arranged in body of heater top outside described furnace chamber or bottom.
4. the heating unit of sheet glass as claimed in claim 1, it is characterized in that, described thermal circulation fan is fixed on sidewall of the furnace body, and described radiation and convection pipe and main ventilation pipe are by hang or supporting rod is fixed on body of heater top in described furnace chamber or bottom.
5. the heating unit of sheet glass as claimed in claim 1, it is characterized in that, described thermal circulation fan motor connects external frequency transformer, by the rotating speed of described external Frequency Converter Control thermal circulation fan motor, to control the stream pressure and the flow that enter described main ventilation pipe.
6. the heating unit of sheet glass as claimed in claim 3, is characterized in that, the drive unit of described displacement controller is realized by the cylinder of controlled stroke, oil cylinder or motor.
CN201110149438.2A 2011-06-03 2011-06-03 Heating device for plate glass CN102807314B (en)

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

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Application Number Priority Date Filing Date Title
CN201110149438.2A CN102807314B (en) 2011-06-03 2011-06-03 Heating device for plate glass

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CN102807314A CN102807314A (en) 2012-12-05
CN102807314B true CN102807314B (en) 2015-06-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748237B2 (en) * 2004-05-27 2010-07-06 Landglass Technology Co. Ltd Convection glass heating furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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