JP3587212B2 - Heating calorie adjusting device - Google Patents

Heating calorie adjusting device Download PDF

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Publication number
JP3587212B2
JP3587212B2 JP27081793A JP27081793A JP3587212B2 JP 3587212 B2 JP3587212 B2 JP 3587212B2 JP 27081793 A JP27081793 A JP 27081793A JP 27081793 A JP27081793 A JP 27081793A JP 3587212 B2 JP3587212 B2 JP 3587212B2
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Japan
Prior art keywords
heating
casing
plate
heating furnace
transport roller
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JP27081793A
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JPH07126026A (en
Inventor
健治 前田
達夫 杉山
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AGC Inc
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Asahi Glass Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
    • C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
    • C03B29/08—Glass sheets

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は窓用板ガラス等の板状材を搬送する搬送ローラの上方に加熱用バーナが設けられると共に搬送ローラの下方に加熱手段が設けられ、加熱用バーナ及び加熱手段で板状材を加熱する加熱炉の熱量調整装置に関するものである。
【０００２】
【従来の技術】
一般に自動車の窓用板ガラス等の板状材を曲げ成形する場合、板状材は曲げ成形される前に加熱炉で曲げ成形が可能な温度まで加熱される。この場合使用される加熱炉として、ローラハース炉が知られている。ローラハース炉は搬送ローラを備えていて、搬送ローラは駆動モータで回転される。これにより、搬送ローラに載置された板状材がローラハース炉内に搬入される。また、ローラハース炉内には搬送ローラの上方に上部ヒータが取り付けられていて、搬送ローラの下方には下部ヒータが取り付けられている。従って、搬送ローラでローラハース炉内を搬送されている板状材は、上方から上部ヒータの熱で加熱されると共に下方から下部ヒータの熱で加熱されて、曲げ成形が可能な温度まで加熱される。
【０００３】
ところで、板状材は搬送ローラに載置されているので板状材の下面は搬送ローラに接触している。従って、板状材の下面には搬送ローラの熱量が直接伝達されて、板状材の下面の温度は上面の温度より高くなるので、板状材が上側に反るという問題点がある。この問題点を解消するための一例として、搬送ローラの外周に一定間隔をおいて環状溝を形成して搬送ローラから板状材の下面側に直接伝達される熱量を抑制し、かつ、板状材の上方に圧縮空気を注入して板状材の上方に対流を生じさせて上部ヒータの熱を効率良く板状材の上面に伝達して、板状材の下面と上面とに吸収される熱量を略等しく保つ方法が提案されている。
【０００４】
【発明が解決しようとする課題】
しかしながら、板状材の上方に対流を生じさせるために圧縮空気を使用すると、加熱炉内の雰囲気温度が低下する。従って、板状材を高温に加熱することが困難になるので、従来の方法では板状材の下面と上面の吸収熱量を略等しく保ちながら板状材を高温に加熱することが困難であるという問題点がある。
【０００５】
また、板状材の下面と上面の吸収熱量を略等しく保つために、板状材の上方で発生する上部熱量と板状材の下方で発生する下部熱量とを略等しく調整する必要がある。
【０００６】
本発明はこのような事情に鑑みてなされたもので、板状材を高温加熱する場合に板状材の下面と上面の吸収熱量を略等しく保つことにより、板状材の反りを防止することができ、かつ加熱炉内の発生熱量を正確に調整することができる加熱炉の熱量調整装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明は、加熱炉内の板状材を搬送する搬送ローラの上方に加熱用バーナが設けられると共に前記搬送ローラの下方に下部加熱手段が設けられ、前記加熱用バーナ及び下部加熱手段で前記板状材の上面及び下面を加熱する加熱炉の熱量調整装置において、前記加熱用バーナの吹出口が収納されると共に前記加熱炉内に開口した吸込口が形成されたケーシングと、該ケーシングに設けられ、前記加熱炉内より前記ケーシング内に吸い込んだ吸込エアと前記加熱用バーナから前記ケーシング内に吹き出された加熱エアとを混合して吹き出すファンと、該ケーシングに昇降自在に支持され、吹出口が前記板状材の上面に対向して開口され、前記ファンから吹き出されたエアを前記板状材の上面に吹き出す吹出ノズルと、該吹出ノズルを昇降させて前記板状材の上面に吸収される熱量を調整する昇降手段と、を備えた加熱炉の熱量調整装置である。
【０００８】
【作用】
本発明によれば、加熱用バーナの吹出口が収納されると共に加熱炉内に開口した吸込口が形成されたケーシングを備え、このケーシングにファンを設けている。ファンは吸込口を介してケーシング内に吸い込んだ吸込エアと加熱用バーナからケーシング内に吹き出された加熱エアとをケーシング内で混合する。また、ケーシングには吹出ノズルが昇降自在に支持されていて、吹出ノズルはケーシング内で混合された混合エアを板状材の上面に吹き出す。この吹出ノズルは昇降手段で高さが調整される。
【０００９】
【００１０】
【００１１】
【実施例】
以下添付図面に従って本発明に係る加熱炉の熱量調整装置について詳説する。図１は本発明に係る加熱炉の熱量調整装置が適用された加熱炉の正面図、図２はその側面図、図３は本発明に係る加熱炉の熱量調整装置の底面図である。加熱炉１０は加熱炉本体１２を備えていて、加熱炉本体１２には搬送ローラ１４が設けられている。搬送ローラ１４はモータ１６（図２参照）に回転力が伝達可能に連結されている。従って、モータ１６が駆動すると搬送ローラ１４が回転して、搬送ローラ１４に載置されている窓用板ガラス１８が加熱炉１０内で図１の矢印方向に搬送される。
【００１２】
搬送ローラ１４の下方には下部加熱手段として加熱用ヒータ２０が設けられていて、搬送ローラ１４の上方には加熱用バーナ２２、２２…が設けられている。本実施例では、下部加熱手段としてヒータを用いたが、バーナを用いて窓用板ガラスを加熱してもよい。なお、本実施例では、下部加熱量の上下限の範囲を広くすることが容易である点に鑑みて、下部加熱手段としてヒータを用いた。加熱用バーナ２２、２２…と搬送ローラ１４との間には熱量調整装置３０が設けられている。熱量調整装置３０はケーシング３２、ファン３８、吹出ノズル３４、３４…及び昇降手段３６を備えている。ケーシング３２は上面に開口穴３２Ａ、３２Ａ…（図３参照）が形成されていて、開口穴３２Ａ、３２Ａ…には加熱用バーナ２２、２２…の吹出口２２Ａ、２２Ａ…が嵌入されている。
【００１３】
図４は熱量調整装置３０を斜め下方から見た斜視図である。ケーシング３２の下面中央には吸込口３２Ｂ（図３、図４参照）が形成されていて、吸込口３２Ｂの上方のケーシング３２内にはファン３８が回動自在に支持されている。ファン３８は吸込口３２Ｂを介して炉内から吸い込んだ吸込エアをケーシング３２内に拡散する。これにより、吸込口３２Ｂから吸い込んだ吸込エアと加熱用バーナ２２の吹出口２２Ａから吹き出された加熱エアとがケーシング３２内で混合される。
【００１４】
さらに、ケーシング３２の下面に形成された開口穴３２Ｃ、３２Ｃ…には、吹出ノズル３４の連通管３４Ａ、３４Ａが移動自在に支持されていて、連通管３４Ａ、３４Ａの下端部には吹出口３４Ｂが取り付けられている。従って、吹出口３４Ｂは上下方向に移動することができる。また、吹出口３４Ｂは連通管３４Ａ、３４Ａを介してケーシング３２内に連通されている。吹出口３４Ｂは矩形状に形成されていて、この吹出口は窓用板ガラス１８に対向して開口されている。
【００１５】
このように構成されている吹出ノズル３４は一定間隔をおいてケーシング３２の下面に昇降自在に複数個配設されていて、これらの吹出ノズル３４、３４…は連結ロッド（図示せず）で一体的に連結されている。従って、吹出ノズル３４、３４…の吹出口は窓用板ガラス１８の上面全域に配置されるので、ケーシング３２内の加熱エアと吸込エアとの混合エアが吹出ノズル３４の吹出口３４Ｂ、３４Ｂから吹き出されると、混合エアが窓用板ガラス１８の上面全域に吹き付けられる。
【００１６】
また、昇降手段３６のシャフト３８Ａ、３８Ｂが加熱炉本体１２の上部に回動自在に支持されている。シャフト３８Ａにはモータ（図示せず）が回転力を伝達可能に連結されている。シャフト３８Ａの両端部にはスプロケット４０、４０が固定されていて、シャフト３８Ｂの両端部にはスプロケット４２、４２が固定されている。そして、一方のスプロケット４０、４２にはチェーン４４Ａが噛み合わされていて、他方のスプロケット４０、４２にはチェーン４４Ｂが噛み合わされている。
【００１７】
図４に示すようにチェーン４４Ａ、４４Ｂの一端部は右側部の吹出口３４Ｂと連結されていて、チェーン４４Ａ、４４Ｂの他端部は左側部の吹出口３４Ｂと連結されている。従って、モータを駆動するとシャフト３８Ａを介してスプロケット４０、４０が回動するので、チェーン４４Ａ、４４Ｂを介してスプロケット４２、４２が回動する。これにより、スプロケット４０、４２に噛み合っているチェーン４４Ａ、４４Ｂは、スプロケット４０、４２に巻取り、巻戻しされて吹出ノズル３４、３４…が昇降する。従って、吹出ノズル３４、３４…を所定の高さに調整することができる。
【００１８】
前記の如く構成された本発明に係る加熱炉の熱量調整装置の作用について説明する。
先ず、加熱用ヒータ２０を通電状態にして、加熱用バーナ２２、２２…を作動させる。さらに、ファン３８を作動させて炉内から吸い込んだ吸込エアと加熱用バーナ２２の吹出口２２Ａから吹き出された加熱エアとをケーシング３２内で混合し、この混合エアを吹出ノズル３４の吹出口３４Ｂ、３４Ｂから吹き出させる。これにより、搬送ローラで搬送されている窓用板ガラス１８の上面全域に混合エアが吹き付けられ、窓用板ガラス１８の上面に対流が生じる。
【００１９】
この状態で、昇降手段３６のモータを駆動してチェーン４４Ａ、４４Ｂをスプロケット４０、４２に巻取り、巻戻しし、吹出ノズル３４、３４…を昇降させて所定位置に位置決めする。これにより、窓用板ガラス１８の上面に吸収される熱量が調整されて、窓用板ガラス１８の上面と下面に与えられる熱量が略等しくなる。
【００２０】
【００２１】
【００２２】
【００２３】
【００２４】
【００２５】
【００２６】
【００２７】
前記実施例では吹出ノズル３４、３４…の高さを調整して上部雰囲気温度Ｔａ（ｕｐｐｅｒ）、上部輻射源温度ＴＨ（ｕｐｐｅｒ）の値を制御する場合について説明したが、これに限らず、例えば、加熱用バーナ２２の燃焼状態の調整等のその他の方法で上部雰囲気温度Ｔａ（ｕｐｐｅｒ）、上部輻射源温度ＴＨ（ｕｐｐｅｒ）の値を制御してもよい。
【００２８】
【発明の効果】
以上説明したように本発明に係る加熱炉の熱量調整装置によれば、ケーシング内に吸い込こまれた吸込エアと加熱用バーナからケーシング内に吹き出された加熱エアとを混合して、ケーシングに昇降自在に支持された吹出ノズルから板状材の上面に吹き出す。これにより板状材が加熱される。そして、板状材の加熱中に、吹出ノズルの高さを調整して、板状材の下面と上面の吸収熱量を略等しく保つことにより、板状材の反りを防止することができる。
【図面の簡単な説明】
【図１】本発明に係る加熱炉の熱量調整装置が適用された加熱炉の正面図
【図２】図１の側面図
【図３】本発明に係る加熱炉の熱量調整装置の底面図
【図４】本発明に係る加熱炉の熱量調整装置の概略斜視図
【符号の説明】
１０…加熱炉
１４…搬送ローラ
１８…窓用板ガラス（板状材）
２０…加熱用ヒータ
２２…加熱用バーナ
２２Ａ…加熱用バーナの吹出口
３０…加熱炉の熱量調整装置
３２…ケーシング
３２Ｂ…吸込口
３４…吹出ノズル
３４Ｂ…吹出口
３６…昇降手段
３８…ファン[0001]
[Industrial applications]
In the present invention, a heating burner is provided above a transport roller that transports a plate material such as a window glass, and a heating unit is provided below the transport roller, and the plate material is heated by the heating burner and the heating unit. it relates heat regulating advice service location of the heating furnace.
[0002]
[Prior art]
Generally, when a plate-shaped material such as a glass sheet for a window of an automobile is bent, the plate-shaped material is heated to a temperature at which the sheet can be bent by a heating furnace before being bent. A roller hearth furnace is known as a heating furnace used in this case. The roller hearth furnace includes a transport roller, and the transport roller is rotated by a drive motor. Thereby, the plate-shaped material placed on the transport roller is carried into the roller hearth furnace. In the roller hearth furnace, an upper heater is mounted above the transport roller, and a lower heater is mounted below the transport roller. Therefore, the plate-like material being conveyed in the roller hearth furnace by the conveying rollers is heated from above by the heat of the upper heater and from below by the heat of the lower heater , and is heated to a temperature at which bending can be performed. .
[0003]
By the way, since the plate material is placed on the transport roller, the lower surface of the plate material is in contact with the transport roller. Therefore, the calorie of the transport roller is directly transmitted to the lower surface of the plate-like material, and the temperature of the lower surface of the plate-like material becomes higher than the temperature of the upper surface, so that there is a problem that the plate-like material warps upward. As an example for solving this problem, an annular groove is formed at a certain interval on the outer periphery of the transport roller to suppress the amount of heat directly transmitted from the transport roller to the lower surface side of the plate-like material, and Compressed air is injected above the plate to generate convection above the plate, effectively transmitting the heat of the upper heater to the upper surface of the plate and being absorbed by the lower and upper surfaces of the plate. A method has been proposed for keeping the heat quantity approximately equal.
[0004]
[Problems to be solved by the invention]
However, when compressed air is used to generate convection above the plate-like material, the ambient temperature in the heating furnace decreases. Therefore, it is difficult to heat the plate-like material to a high temperature, and it is difficult to heat the plate-like material to a high temperature while keeping the heat absorption of the lower surface and the upper surface of the plate-like material approximately equal in the conventional method. There is a problem.
[0005]
Further, in order to maintain a substantially equal absorption heat of the lower surface and the upper surface of the plate-like member, Ru substantially equal adjust need a lower amount of heat generated below the upper heat plate-shaped member that occurs above the plate-like member .
[0006]
The present invention has been made in view of such circumstances, and when heating a plate-like material at a high temperature, by keeping the amount of heat absorbed by the lower surface and the upper surface of the plate-like material approximately equal, to prevent warpage of the plate-like material. an object that can be, and to provide a heat regulating advice service location of the heating furnace can be accurately adjusted the amount of heat generated in the heating furnace.
[0007]
[Means for Solving the Problems]
The present invention is characterized in that a heating burner is provided above a transport roller for transporting a plate-like material in a heating furnace, and a lower heating means is provided below the transport roller, and the plate is heated by the heating burner and the lower heating means. In a calorie adjusting device for a heating furnace for heating an upper surface and a lower surface of a shaped material, a casing in which an outlet of the heating burner is housed and a suction port opened in the heating furnace is formed, and provided in the casing. A fan that mixes the suction air sucked into the casing from the heating furnace and the heating air blown into the casing from the heating burner, and blows the mixture; and A blowing nozzle that is opened to face the upper surface of the plate-shaped material and blows air blown from the fan to the upper surface of the plate-shaped material; A lifting means for adjusting the amount of heat absorbed by the upper surface of the plate-like member, a heat regulator of the heating furnace equipped with.
[0008]
[Action]
According to the present invention, there is provided a casing in which the outlet of the heating burner is housed and in which a suction port opened in the heating furnace is formed, and a fan is provided in this casing. The fan mixes the suction air sucked into the casing via the suction port and the heating air blown into the casing from the heating burner in the casing. A blow nozzle is supported on the casing so as to be able to move up and down, and the blow nozzle blows out the mixed air mixed in the casing onto the upper surface of the plate-shaped material. The height of the blow-out nozzle is adjusted by a lifting means.
[0009]
[0010]
[0011]
【Example】
It will be described in detail heat regulating advice service location of a heating furnace according to the present invention with reference to the accompanying drawings. FIG. 1 is a front view of a heating furnace to which a heating amount adjusting device according to the present invention is applied, FIG. 2 is a side view thereof, and FIG. 3 is a bottom view of the heating amount adjusting device of the heating furnace according to the present invention. The heating furnace 10 includes a heating furnace main body 12, and the heating furnace main body 12 is provided with a transport roller 14. The transport roller 14 is connected to a motor 16 (see FIG. 2) so that rotational force can be transmitted. Therefore, when the motor 16 is driven, the transport roller 14 rotates, and the window glass 18 placed on the transport roller 14 is transported in the heating furnace 10 in the direction of the arrow in FIG.
[0012]
A heating heater 20 is provided below the transport roller 14 as a lower heating means, and heating burners 22, 22... Are provided above the transport roller 14. In this embodiment, a heater is used as the lower heating means, but a window glass may be heated using a burner. In this example, a heater was used as the lower heating means in view of the fact that it is easy to widen the upper and lower limits of the lower heating amount. A heat quantity adjusting device 30 is provided between the heating burners 22, 22... And the transport roller 14. The calorie adjusting device 30 includes a casing 32, a fan 38, blowing nozzles 34, 34,... The casing 32 has openings 32A, 32A... (See FIG. 3) formed on the upper surface thereof, and the outlets 22A of the heating burners 22, 22.
[0013]
FIG. 4 is a perspective view of the calorie adjusting device 30 as viewed obliquely from below. A suction port 32B (see FIGS. 3 and 4) is formed in the center of the lower surface of the casing 32, and a fan 38 is rotatably supported in the casing 32 above the suction port 32B. The fan 38 diffuses the suction air sucked from the furnace through the suction port 32 </ b> B into the casing 32. Thereby, the suction air sucked in from the suction port 32B and the heating air blown out from the outlet 22A of the heating burner 22 are mixed in the casing 32.
[0014]
Further, communication pipes 34A, 34A of the blow-out nozzle 34 are movably supported in opening holes 32C, 32C,... Formed on the lower surface of the casing 32, and blow-off ports 34B are provided at lower ends of the communication pipes 34A, 34A. Is attached. Therefore, the outlet 34B can move up and down. The outlet 34B is connected to the inside of the casing 32 via the communication pipes 34A, 34A. The air outlet 34B is formed in a rectangular shape, and the air outlet is opened to face the window glass 18.
[0015]
A plurality of the blowing nozzles 34 configured as described above are arranged on the lower surface of the casing 32 at predetermined intervals so as to be able to move up and down, and these blowing nozzles 34 are integrally formed by connecting rods (not shown). Are connected. .. Are arranged in the entire upper surface of the window glass 18, so that the mixed air of the heating air and the suction air in the casing 32 is blown out from the blowout nozzles 34 </ b> B, 34 </ b> B of the blowout nozzle 34. Then, the mixed air is blown over the entire upper surface of the window glass 18.
[0016]
The shafts 38A and 38B of the elevating means 36 are rotatably supported on the upper part of the heating furnace main body 12. A motor (not shown) is connected to the shaft 38A so as to be able to transmit a rotational force. Sprockets 40, 40 are fixed to both ends of the shaft 38A, and sprockets 42, 42 are fixed to both ends of the shaft 38B. A chain 44A meshes with one of the sprockets 40 and 42, and a chain 44B meshes with the other sprockets 40 and 42.
[0017]
As shown in FIG. 4, one end of the chains 44A, 44B is connected to the outlet 34B on the right side, and the other end of the chains 44A, 44B is connected to the outlet 34B on the left side. Accordingly, when the motor is driven, the sprockets 40, 40 rotate via the shaft 38A, and the sprockets 42, 42 rotate via the chains 44A, 44B. Thus, the chains 44A, 44B meshing with the sprockets 40, 42 are wound around the sprockets 40, 42, rewound, and the blow-out nozzles 34, 34 move up and down. Can be adjusted to a predetermined height.
[0018]
The operation of the calorific value adjusting device for a heating furnace according to the present invention configured as described above will be described.
First, the heating heater 20 is turned on, and the heating burners 22, 22,... Are operated. Further, by operating the fan 38, the suction air sucked from the furnace and the heating air blown out from the outlet 22A of the heating burner 22 are mixed in the casing 32, and the mixed air is discharged into the outlet 34B of the outlet nozzle 34. , 34B. As a result, the mixed air is blown over the entire area of the upper surface of the window glass 18 being transported by the transport rollers, and convection occurs on the upper surface of the window glass 18.
[0019]
In this state, the chains 44A, 44B are wound around the sprockets 40, 42 by driving the motor of the lifting / lowering means 36, and are rewinded, and the blowing nozzles 34, 34 are moved up and down to be positioned at predetermined positions. Thereby, the amount of heat absorbed by the upper surface of the window glass 18 is adjusted, and the amount of heat applied to the upper surface and the lower surface of the window glass 18 becomes substantially equal.
[0020]
[0021]
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
In the above embodiment, the case where the values of the upper ambient temperature Ta (upper) and the upper radiation source temperature TH (upper) are controlled by adjusting the height of the blowing nozzles 34, 34,... Is not limited thereto. For example, the values of the upper ambient temperature Ta (upper) and the upper radiation source temperature TH (upper) may be controlled by other methods such as adjusting the combustion state of the heating burner 22 .
[0028]
【The invention's effect】
According to the amount of heat regulating advice service location of a heating furnace according to the present invention described above, by mixing a heated air blown out and write frame the suction air sucked into the casing from the heating burner in the casing, The air is blown out onto the upper surface of the plate-like material from a blow-out nozzle supported up and down by the casing. Thereby, the plate-like material is heated. Then, during heating of the plate-like material, the height of the blow-out nozzle is adjusted so that the amount of heat absorbed by the lower surface and the upper surface of the plate-like material is kept substantially equal, whereby the warpage of the plate-like material can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view of a heating furnace to which a calorie adjusting device for a heating furnace according to the present invention is applied; FIG. 2 is a side view of FIG. 1; FIG. FIG. 4 is a schematic perspective view of a calorie adjusting device for a heating furnace according to the present invention.
10: heating furnace 14: transport roller 18: window glass (plate material)
Reference Signs List 20 heating heater 22 heating burner 22A heating burner outlet 30 heating furnace calorie adjusting device 32 casing 32B suction inlet 34 outlet nozzle 34B outlet 36 lifting means 38 fan

Claims (1)

加熱炉内の板状材を搬送する搬送ローラの上方に加熱用バーナが設けられると共に前記搬送ローラの下方に下部加熱手段が設けられ、前記加熱用バーナ及び下部加熱手段で前記板状材の上面及び下面を加熱する加熱炉の熱量調整装置において、
前記加熱用バーナの吹出口が収納されると共に前記加熱炉内に開口した吸込口が形成されたケーシングと、
該ケーシングに設けられ、前記加熱炉内より前記ケーシング内に吸い込んだ吸込エアと前記加熱用バーナから前記ケーシング内に吹き出された加熱エアとを混合して吹き出すファンと、
該ケーシングに昇降自在に支持され、吹出口が前記板状材の上面に対向して開口され、前記ファンから吹き出されたエアを前記板状材の上面に吹き出す吹出ノズルと、
該吹出ノズルを昇降させて前記板状材の上面に吸収される熱量を調整する昇降手段と、
を備えた加熱炉の熱量調整装置。A heating burner is provided above a transport roller for transporting the plate material in the heating furnace, and a lower heating means is provided below the transport roller. The upper surface of the plate material is provided by the heating burner and the lower heating means. And in the calorie adjusting device of the heating furnace for heating the lower surface,
A casing in which an outlet of the heating burner is housed and a suction port opened in the heating furnace is formed,
A fan provided in the casing, for mixing and sucking the suction air sucked into the casing from the heating furnace and the heating air blown into the casing from the heating burner;
A blow nozzle that is supported by the casing so as to be able to move up and down, has an outlet that is opened facing the upper surface of the plate material, and blows air blown from the fan to the upper surface of the plate material;
Lifting means for raising and lowering the blowing nozzle to adjust the amount of heat absorbed by the upper surface of the plate-like material ;
A calorie adjusting device for a heating furnace equipped with:
JP27081793A 1993-10-28 1993-10-28 Heating calorie adjusting device Expired - Fee Related JP3587212B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27081793A JP3587212B2 (en) 1993-10-28 1993-10-28 Heating calorie adjusting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27081793A JP3587212B2 (en) 1993-10-28 1993-10-28 Heating calorie adjusting device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2003307728A Division JP4000475B2 (en) 2003-08-29 2003-08-29 Heat amount adjustment method of heating furnace

Publications (2)

Publication Number Publication Date
JPH07126026A JPH07126026A (en) 1995-05-16
JP3587212B2 true JP3587212B2 (en) 2004-11-10

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Publication number Priority date Publication date Assignee Title
DE19728787C1 (en) * 1997-07-05 1998-09-03 Glafurit Anlagenbau Gmbh Roller hearth furnace for glass sheet heating
JP4577597B2 (en) * 2000-08-21 2010-11-10 旭硝子株式会社 Method for bending glass plate and heating furnace for bending
FI115045B (en) * 2002-04-03 2005-02-28 Feracitas Oy Methods and devices for bending and tempering glass
CN113845295B (en) * 2021-09-14 2023-10-13 福耀集团(福建)机械制造有限公司 Convection heating element for glass heating furnace
CN113636747B (en) * 2021-09-14 2023-10-13 福耀集团(福建)机械制造有限公司 Glass heating furnace and glass heating method
CN115259649A (en) * 2022-07-06 2022-11-01 河南旭阳光电科技有限公司 Glass heat preservation device and float glass production system

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