JP2005097033A - 板状体の加熱方法 - Google Patents
板状体の加熱方法 Download PDFInfo
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- JP2005097033A JP2005097033A JP2003331916A JP2003331916A JP2005097033A JP 2005097033 A JP2005097033 A JP 2005097033A JP 2003331916 A JP2003331916 A JP 2003331916A JP 2003331916 A JP2003331916 A JP 2003331916A JP 2005097033 A JP2005097033 A JP 2005097033A
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- plate
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
- F27B9/063—Resistor heating, e.g. with resistors also emitting IR rays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
- F27B9/3011—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
Abstract
【解決手段】加熱炉10内に設置された複数のローラ14と、このローラ14の下方に設置された輻射加熱手段13と、ローラ14の上方に設置されて加熱エアを噴射するための対流加熱手段20とを用いる。板状体Gの搬送方向と直交する方向に沿って複数の領域を設定するステップと、対流加熱手段20から噴射される加熱エアの熱量を領域毎に調整するステップとを有する。
【選択図】図2
Description
図1(a)は加熱炉の一実施形態を示すブロック図、同図(b)は対流加熱装置のレイアウト(例1)を示す平面図、および同図(c)は対流加熱装置のレイアウト(例2)を示す平面図である。これらの図に示す加熱炉は、その内部に耐熱性部材(例えばシリカ等)で作られたローラを複数備えたローラコンベアが設置されるとともに、ガラス板を加熱するための対流加熱装置および輻射加熱装置が設置されている。
図2(a)は図1の加熱炉のゾーン1〜Mを示す断面図、同図(b)はA−A’線矢視図、および同図(c)はB−B’線矢視図を示す。これらの図に示す加熱炉10は、耐火煉瓦等で構成された炉壁11内に設置された対流加熱装置20と、ガラス板Gを搬送するためのシリカ製の円柱状ローラ14と、炉床12に設置され電気ヒータ等からなる輻射加熱装置13とを備えている。
図6は、本発明に係る加熱方法の一実施形態を示すフローチャートである。まず、加熱炉外においてガラス板の搬送を開始し、ガラス板Gを加熱炉10内に搬入する(ステップS1)。次いで、ゾーン1〜Mにおいて、ガラス板Gの上部を対流加熱装置20により強制対流加熱し、下部を輻射加熱装置13により輻射加熱する(ステップS2)。ステップS2の詳細は図7に示すとおりであり、RCファン26の回転数を適宜制御することにより所望の流量のエアを吸引し(ステップS21)、主ヒータ25を適宜温度制御してエアを予備加熱する(ステップS22)。予備加熱されたエアは各ダクト21に供給され、補助ヒータ22aの温度制御により所望の温度まで加熱されてから(ステップS23)、ノズル22に設けられたエア噴射孔22aからガラス板Gの上面に噴射される(ステップS24)。
図9(a)〜(f)は、本発明に係る加熱炉のその他の実施形態を示す模式図である。同図(a)に示す加熱炉は、図4に示した加熱炉と同様の構成を有する。すなわち、RCファン26によって吸引されたエアを予備加熱するための主ヒータ25と、ダクト21の吸気口近傍に設置されたダンパ24と、管状のノズル22内に設置された補助ヒータ23とを加熱炉10内に備えている点に特徴がある。ダンパ24の開閉を制御することにより、各ノズル22から噴射される加熱エアの流量を制御でき、ノズル22毎に噴射されるエアの対流熱伝達係数を制御できる。
11:炉壁
12:炉床
13:電気ヒータ
14:ローラ
20:対流加熱装置
21:ダクト
22:ノズル
22a:エア噴射孔
23:補助ヒータ
23a、23b:個別ヒータ
24:ダンパ
25:主ヒータ
26:RCファン
Claims (7)
- 加熱炉内に設置された複数のローラと、このローラの下方に設置された輻射加熱手段と、前記ローラの上方に設置されて加熱エアを噴射するための対流加熱手段とを用い、前記ローラによって搬送される板状体をこれらの加熱手段で加熱する方法において、
前記板状体の搬送方向と直交する方向に沿って複数の領域を設定するステップと、前記対流加熱手段から噴射される加熱エアの熱量を前記領域毎に調整するステップとを有することを特徴とする板状体の加熱方法。 - 前記対流加熱手段は、電気加熱手段と複数のエア噴射孔を備えた複数のノズルとを備えている請求項1に記載の板状体の加熱方法。
- 同一のノズルに設けられた複数のエア噴射孔は、隣接する2つのエア噴射孔同士を結ぶ線分が、前記板状体の搬送方向と平行とならないように配置されている請求項2に記載の板状体の加熱方法。
- 前記ノズルは、複数のエア噴射孔を備えた長尺の管で構成され、その長手方向が水平面上における前記ガラス板の搬送方向に対して90°未満の角度だけ傾斜している請求項1〜3の何れか一項に記載の板状体の加熱方法。
- 前記対流加熱手段は、各ノズルに供給される前のエアを予備加熱する少なくとも1台の主ヒータと、各ノズルに設置された複数の補助ヒータとを備えている請求項3〜4の何れか一項に記載の板状体加熱方法。
- 前記板状体は、ガラス板である請求項1〜5の何れか一項に記載の板状体の加熱方法。
- 前記ガラス板は、自動車用窓ガラスの製造に用いられる請求項6に記載の板状体の加熱方法。
Priority Applications (1)
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JP2003331916A JP4400158B2 (ja) | 2003-09-24 | 2003-09-24 | 板状体の加熱方法 |
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JP2003331916A JP4400158B2 (ja) | 2003-09-24 | 2003-09-24 | 板状体の加熱方法 |
Publications (2)
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JP2005097033A true JP2005097033A (ja) | 2005-04-14 |
JP4400158B2 JP4400158B2 (ja) | 2010-01-20 |
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JP2003331916A Expired - Fee Related JP4400158B2 (ja) | 2003-09-24 | 2003-09-24 | 板状体の加熱方法 |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009933A1 (de) * | 2005-07-15 | 2007-01-25 | Eliog-Kelvitherm Industrieofenbau Gmbh | Flachglasofen |
FR2921058A1 (fr) * | 2007-09-18 | 2009-03-20 | Saint Gobain Seva Sa | Dispositif et procede de soufflage d'un fluide sur une face d'un element mince de type vitrage |
EP2368855A2 (en) | 2010-03-15 | 2011-09-28 | Glaston Services Ltd. Oy | Apparatus for heating glass sheets for tempering |
CN102730951A (zh) * | 2012-06-22 | 2012-10-17 | 杭州精工机械有限公司 | 超薄钢化玻璃生产线专用玻璃钢化炉及加热方法 |
WO2013029197A1 (zh) * | 2011-08-29 | 2013-03-07 | 上海北玻玻璃技术工业有限公司 | 辐射式加热炉体的进出风热交换系统 |
CN108817307A (zh) * | 2018-08-17 | 2018-11-16 | 海安金锻工业有限公司 | 一种汽车控制臂锻造生产线及锻造成形工艺 |
CN113998877A (zh) * | 2021-11-24 | 2022-02-01 | 江苏中昇电子科技有限公司 | 一种钢化玻璃成型辅助装置 |
EP3978854A1 (de) * | 2020-09-30 | 2022-04-06 | Riedhammer Gmbh | Tunnelofen zur wärmebehandlung von produkten, ein verfahren zum betreiben eines solchen tunnelofens sowie die verwendung eines solchen tunnelofens |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI127228B2 (fi) | 2013-05-23 | 2022-11-15 | Taifin Glass Machinery Oy | Menetelmä lasilevyjen lämmittämiseksi ja lasinkarkaisu-uuni |
-
2003
- 2003-09-24 JP JP2003331916A patent/JP4400158B2/ja not_active Expired - Fee Related
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009933A1 (de) * | 2005-07-15 | 2007-01-25 | Eliog-Kelvitherm Industrieofenbau Gmbh | Flachglasofen |
FR2921058A1 (fr) * | 2007-09-18 | 2009-03-20 | Saint Gobain Seva Sa | Dispositif et procede de soufflage d'un fluide sur une face d'un element mince de type vitrage |
WO2009047450A1 (fr) | 2007-09-18 | 2009-04-16 | Saint-Gobain Seva | Dispositif et procede de soufflage d'un fluide sur une face d'un element mince de type vitrage |
EP2368855A2 (en) | 2010-03-15 | 2011-09-28 | Glaston Services Ltd. Oy | Apparatus for heating glass sheets for tempering |
EP2368855A3 (en) * | 2010-03-15 | 2012-10-10 | Glaston Services Ltd. Oy | Apparatus for heating glass sheets for tempering |
WO2013029197A1 (zh) * | 2011-08-29 | 2013-03-07 | 上海北玻玻璃技术工业有限公司 | 辐射式加热炉体的进出风热交换系统 |
CN102730951A (zh) * | 2012-06-22 | 2012-10-17 | 杭州精工机械有限公司 | 超薄钢化玻璃生产线专用玻璃钢化炉及加热方法 |
CN108817307A (zh) * | 2018-08-17 | 2018-11-16 | 海安金锻工业有限公司 | 一种汽车控制臂锻造生产线及锻造成形工艺 |
EP3978854A1 (de) * | 2020-09-30 | 2022-04-06 | Riedhammer Gmbh | Tunnelofen zur wärmebehandlung von produkten, ein verfahren zum betreiben eines solchen tunnelofens sowie die verwendung eines solchen tunnelofens |
CN113998877A (zh) * | 2021-11-24 | 2022-02-01 | 江苏中昇电子科技有限公司 | 一种钢化玻璃成型辅助装置 |
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