JP3173376U - heating furnace - Google Patents
heating furnace Download PDFInfo
- Publication number
- JP3173376U JP3173376U JP2011006881U JP2011006881U JP3173376U JP 3173376 U JP3173376 U JP 3173376U JP 2011006881 U JP2011006881 U JP 2011006881U JP 2011006881 U JP2011006881 U JP 2011006881U JP 3173376 U JP3173376 U JP 3173376U
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- Prior art keywords
- furnace
- wall
- heater
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- heating
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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
- F27B9/36—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
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
-
- 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
- F27B9/22—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 on rails, e.g. under the action of scrapers or pushers
- F27B9/222—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 on rails, e.g. under the action of scrapers or pushers the path comprising a section specially adapted for effecting equalisation of the temperature of the charge
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Furnace Details (AREA)
Abstract
【課題】炉幅の拡張に伴う炉幅方向の温度ばらつきを低減することができる加熱炉を提供する。
【解決手段】発熱部と非発熱部を有する棒状SiCヒータ5を、炉幅方向で炉壁を貫通して、炉長手方向に複数配置した加熱炉において、炉長手方向に複数配置された棒状SiCヒータ5間には、一方の炉壁4に保持されて該内壁面7近辺を加熱する補助ヒータを備える。
【選択図】図1A heating furnace capable of reducing temperature variations in the furnace width direction accompanying the expansion of the furnace width is provided.
In a heating furnace in which a plurality of rod-shaped SiC heaters 5 having a heat generating portion and a non-heat generating portion are disposed in the furnace longitudinal direction through the furnace wall, a plurality of rod-shaped SiC heaters disposed in the furnace longitudinal direction. Between the heaters 5, there is provided an auxiliary heater that is held by one furnace wall 4 and heats the vicinity of the inner wall surface 7.
[Selection] Figure 1
Description
本考案は、加熱炉の炉内ヒータ配置構造に関するものである。 The present invention relates to an in-furnace heater arrangement structure of a heating furnace.
電子部品用粉体の焼成技術として、粉末原料を匣鉢と呼ばれる耐熱容器内に収納し、高温の加熱炉内を搬送しながら高温で熱処理する方法が知られている。当該加熱処理方法においては、炉内でのコンタミ防止の観点から、セラミック製のヒータが使用されることが多く、特に、棒状のSiCヒータが多く採用されている(特許文献1)。 As a technique for firing powder for electronic parts, a method is known in which a powder raw material is stored in a heat-resistant container called a mortar and heat-treated at a high temperature while being conveyed in a high-temperature heating furnace. In the heat treatment method, a ceramic heater is often used from the viewpoint of preventing contamination in the furnace, and in particular, a rod-shaped SiC heater is often used (Patent Document 1).
該棒状SiCヒータの炉内配置に関し、従来、棒状SiCヒータが貫通する炉壁の内壁面側におけるヒータの過加熱およびこれに伴うヒータ劣化を回避する観点から、図5に示すように、棒状ヒータの発熱部が内壁面と50mm程度離れた位置にくるように調整する方法が採用されていた。元来、炉壁付近の温度は、炉壁からの放熱により低くなる傾向が見られるが、前記のような棒状ヒータの発熱部配置を採用すると、内壁近辺における温度低下が更に顕著になる現象が観察される。 With respect to the arrangement of the rod-shaped SiC heater in the furnace, conventionally, from the viewpoint of avoiding overheating of the heater on the inner wall surface side of the furnace wall through which the rod-shaped SiC heater penetrates and accompanying heater deterioration, as shown in FIG. The method of adjusting so that the heat generating part of the head is positioned about 50 mm away from the inner wall surface has been adopted. Originally, the temperature in the vicinity of the furnace wall tends to be lowered due to heat radiation from the furnace wall. However, if the heat generating part arrangement of the rod heater as described above is adopted, the temperature decrease near the inner wall becomes more remarkable. Observed.
特に、近年、炉の生産性向上を目的として炉幅が拡張される傾向にあるが、これに伴って、炉幅方向における温度ばらつきも大きくなり、被焼成物の品質にバラつきが生じる問題があった。 In particular, in recent years, there is a tendency for the furnace width to be expanded for the purpose of improving the productivity of the furnace, but with this, the temperature variation in the furnace width direction also increases, and there is a problem that the quality of the material to be fired varies. It was.
本考案の目的は前記を解決し、炉幅の拡張に伴う炉幅方向の温度ばらつきを低減することができる加熱炉を提供することである。 An object of the present invention is to provide a heating furnace that solves the above and can reduce temperature variations in the furnace width direction accompanying the expansion of the furnace width.
上記課題を解決するためになされた本考案の加熱炉は、発熱部と非発熱部を有する棒状SiCヒータを、炉幅方向で炉壁を貫通して、炉長手方向に複数配置した加熱炉において、炉長手方向に複数配置された棒状SiCヒータ間には、一方の炉壁に保持されて該内壁面近辺を加熱する補助ヒータを備えることを特徴とするものである。 The heating furnace of the present invention made to solve the above problems is a heating furnace in which a plurality of rod-shaped SiC heaters having a heating part and a non-heating part are arranged in the furnace longitudinal direction through the furnace wall in the furnace width direction. Between the plurality of rod-shaped SiC heaters arranged in the furnace longitudinal direction, there is provided an auxiliary heater that is held on one furnace wall and heats the vicinity of the inner wall surface.
請求項2記載の考案は、請求項1記載の加熱炉において、該棒状SiCヒータが貫通する炉壁の内壁面側に、切欠き部が形成され、該棒状SiCヒータは、切欠き部内を非発熱部、内壁面から炉内側を発熱部とすることを特徴とするものである。
The invention according to
請求項3記載の考案は、請求項1または2記載の加熱炉において、補助ヒータを、炉長手方向で該棒状SiCヒータと交互に配置したことを特徴とするものである。
The invention according to
請求項4記載の考案は、請求項1〜3の何れかに記載の加熱炉において、補助ヒータは、棒形状を有し、炉壁からの突出部が、炉幅の1/20〜1/5であることを特徴とするものである。
The invention described in
請求項5記載の考案は、請求項1〜3の何れかに記載の加熱炉において、補助ヒータは、コ字形状を有することを特徴とするものである。
The invention according to
従来、SiCヒータが貫通する炉壁の内壁面側におけるヒータの過加熱およびこれに伴うヒータ劣化を回避する観点から、図5に示すように、ヒータの発熱部が内壁面と50mm程度離れた位置にくるように調整する方法が採用されており、当該構造に起因して、内壁近辺では炉内温度が低くなる現象があったが、本考案に係る加熱炉は、炉幅方向で炉壁を貫通して配置した加熱炉において、一方の炉壁に保持されて内壁面近辺を加熱する補助ヒータを備える構成を合わせて採用することにより、従来、内壁近辺では炉内温度が低くなっていた現象を回避可能としている。 Conventionally, from the viewpoint of avoiding overheating of the heater and the accompanying heater deterioration on the inner wall surface side of the furnace wall through which the SiC heater penetrates, as shown in FIG. However, due to the structure, there was a phenomenon that the temperature in the furnace was lowered near the inner wall, but the heating furnace according to the present invention has the furnace wall in the furnace width direction. Phenomenon that the furnace temperature has been lowered in the vicinity of the inner wall in the past by adopting a configuration including an auxiliary heater that is held by one furnace wall and heats the vicinity of the inner wall surface in the heating furnace that is disposed through. Can be avoided.
すなわち、本考案によれば、従来、内壁近辺では炉内温度が低くなっていた現象を回避することができるため、炉の生産性向上を目的として炉幅を拡張した場合であっても、炉幅方向における温度ばらつきを効果的に抑制することができる。 That is, according to the present invention, the phenomenon that the temperature in the furnace has been lowered in the vicinity of the inner wall can be avoided conventionally, so even if the furnace width is expanded for the purpose of improving the productivity of the furnace, Temperature variations in the width direction can be effectively suppressed.
なお、更に、棒状SiCヒータが貫通する炉壁の内壁面側に、切欠き部を形成され、該棒状SiCヒータは、切欠き部内を非発熱部、内壁面から炉内側を発熱部とする構成を追加して備える構成によれば、より効果的に炉幅方向における温度ばらつきを抑制することができる。 Further, a notch portion is formed on the inner wall surface side of the furnace wall through which the bar-shaped SiC heater passes, and the bar-shaped SiC heater has a non-heat generating portion inside the notched portion and a heat generating portion from the inner wall surface to the inside of the furnace. According to the configuration additionally provided, temperature variations in the furnace width direction can be more effectively suppressed.
以下に本考案の好ましい実施形態を示す。 Hereinafter, preferred embodiments of the present invention will be described.
図1には、本実施形態の加熱炉を示す炉幅方向の拡大断面図を示している。本実施形態における加熱炉は、ローラーハースキルンであり、炉体1は周知のトンネル構造であり、その内部に一定ピッチで多数の搬送用のローラ2が配置されている。各ローラ2は高温強度に優れたSi−SiC製であり、炉外に設置された駆動装置によって一定速度で駆動されている。なおSi−SiCはSiを含浸させた緻密なSiCであり、1300℃において250MN/m2という高強度を有する。また耐クリープ性、耐酸化性、赤外線の放射性にも優れる材質である。
In FIG. 1, the expanded sectional view of the furnace width direction which shows the heating furnace of this embodiment is shown. The heating furnace in the present embodiment is a roller hearth kiln, and the
被焼成物である粉体はセラミック製の匣鉢3に収納され、複数の匣鉢3を配列した状態でローラ2上を搬送され、500〜1200℃で熱処理される。
Powder to be fired is housed in a
炉内6の上部および下部には、各々、炉幅方向で炉壁4を貫通して棒状SiCヒータ5が配置されている。また、図2に示すように、炉長手方向には、該棒状SiCヒータ5と補助ヒータ9とが交互に配置されている。棒状SiCヒータ5の炉壁からの突出部が、炉幅の1/20未満の場合、壁面の温度補助をするためのヒータ出力が稼げず、炉幅の1/5超の場合 、炉の中心部分の温度が高くなりがちな領域へ補助ヒータが影響を及ぼす恐れがあるため、棒状SiCヒータ5の炉壁からの突出部は、炉幅の1/20〜1/5とすることが好ましい。
A bar-
ただし、補助ヒータは、一方の炉壁4に保持されて該炉壁4近辺を加熱する機能を奏すればよく、本実施形態では、棒状の補助ヒータ9を使用しているが、補助ヒータ9の形状等は特に限定されず、例えば、図3に示すようなコ字状のものを使用することもできる。
However, the auxiliary heater is only required to have a function of being held by one
図3に示すように、棒状SiCヒータ5は、発熱を行う発熱部51と、発熱を行わない非発熱部52bを有している。
As shown in FIG. 3, the rod-
炉壁4の内壁面7側には、コーン形状の切欠き部8が形成されており、棒状SiCヒータ5は、切欠き部内を非発熱部52b、内壁面7から炉内6側を発熱部51を有している。
A cone-
従来、SiCヒータが貫通する炉壁4の内壁面7側におけるヒータの過加熱およびこれに伴うヒータ劣化を回避する観点から、図5に示すように、棒状SiCヒータ5の発熱部51が内壁面7と50mm程度離れた位置にくるように調整する方法が採用されており、当該構造に起因して、内壁面7近辺では炉内温度が低くなる現象があったが、本考案に係る加熱炉は、炉幅方向で炉壁を貫通して配置した加熱炉において、一方の炉壁に保持されて内壁面近辺を加熱する補助ヒータを備える構成を合わせて採用することにより、従来、内壁近辺では炉内温度が低くなっていた現象を回避可能としている。本実施形態では、棒状SiCヒータ5が貫通する炉壁4の内壁面7側に、切欠き部8を形成し、棒状SiCヒータの、切欠き部8内に配置される部分を非発熱部52b、内壁面から炉内側に配置される部分を発熱部51とする構成、および、一方の炉壁4に保持されて内壁面7近辺を加熱する補助ヒータ9を備える構成を合わせて採用を採用することにより、当該現象を更に効果的に回避可能としている。
Conventionally, from the viewpoint of avoiding overheating of the heater on the
すなわち本考案によれば、従来、内壁近辺では炉内温度が低くなっていた現象を回避することができるため、炉の生産性向上を目的として炉幅を拡張した場合であっても、炉幅方向における温度ばらつきを効果的に抑制することができる。 That is, according to the present invention, the phenomenon that the temperature in the furnace has been lowered in the vicinity of the inner wall can be avoided conventionally, so even if the furnace width is expanded for the purpose of improving the productivity of the furnace, The temperature variation in the direction can be effectively suppressed.
1 炉体
2 ローラ
3 匣鉢
4 炉壁
5 棒状SiCヒータ
51 発熱部
52b 非発熱部
6 炉内
7 内壁面
8 切欠き部
9 補助ヒータ
Claims (5)
炉長手方向に複数配置された棒状SiCヒータ間には、一方の炉壁に保持されて該内壁面近辺を加熱する補助ヒータを備える
ことを特徴とする加熱炉。 In a heating furnace in which a plurality of rod-shaped SiC heaters having a heat generating part and a non-heat generating part are disposed in the furnace longitudinal direction through the furnace wall in the furnace width direction,
A heating furnace comprising an auxiliary heater that is held by one furnace wall and heats the vicinity of the inner wall surface between a plurality of rod-shaped SiC heaters arranged in the furnace longitudinal direction.
該棒状SiCヒータは、切欠き部内を非発熱部、内壁面から炉内側を発熱部とすることを特徴とする請求項1記載の加熱炉。 A notch is formed on the inner wall surface side of the furnace wall through which the rod-shaped SiC heater passes,
The heating furnace according to claim 1, wherein the bar-shaped SiC heater has a not-heat generating portion as a non-heating portion and a heating portion from the inner wall surface to the inside of the furnace.
The heating furnace according to claim 1, wherein the auxiliary heater has a U shape.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011006881U JP3173376U (en) | 2011-11-22 | 2011-11-22 | heating furnace |
TW101204272U TWM442494U (en) | 2011-11-22 | 2012-03-09 | Heating furnace |
CN2012200913660U CN202547402U (en) | 2011-11-22 | 2012-03-12 | Heating furnace |
KR2020120001914U KR200483126Y1 (en) | 2011-11-22 | 2012-03-12 | Heating furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011006881U JP3173376U (en) | 2011-11-22 | 2011-11-22 | heating furnace |
Publications (1)
Publication Number | Publication Date |
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JP3173376U true JP3173376U (en) | 2012-02-02 |
Family
ID=47172994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2011006881U Expired - Lifetime JP3173376U (en) | 2011-11-22 | 2011-11-22 | heating furnace |
Country Status (4)
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JP (1) | JP3173376U (en) |
KR (1) | KR200483126Y1 (en) |
CN (1) | CN202547402U (en) |
TW (1) | TWM442494U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107917615B (en) * | 2017-12-28 | 2024-01-30 | 洛阳北玻轻晶石技术有限公司 | Multistage roller kiln for firing foamed ceramic insulation board |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000310491A (en) * | 1999-04-27 | 2000-11-07 | Tokai Konetsu Kogyo Co Ltd | Continuous tunnelling electric kiln |
JP2004163020A (en) | 2002-11-14 | 2004-06-10 | Koyo Thermo System Kk | Heating furnace |
KR200374014Y1 (en) | 2004-10-28 | 2005-01-28 | (주)써모텍 | Electric furnace comprising dark wall heater |
JP5049093B2 (en) | 2007-10-22 | 2012-10-17 | 日本碍子株式会社 | Laura Heartilkin |
JP5732655B2 (en) | 2008-12-03 | 2015-06-10 | 東海高熱工業株式会社 | Batch type firing furnace |
-
2011
- 2011-11-22 JP JP2011006881U patent/JP3173376U/en not_active Expired - Lifetime
-
2012
- 2012-03-09 TW TW101204272U patent/TWM442494U/en not_active IP Right Cessation
- 2012-03-12 CN CN2012200913660U patent/CN202547402U/en not_active Expired - Lifetime
- 2012-03-12 KR KR2020120001914U patent/KR200483126Y1/en active IP Right Grant
Also Published As
Publication number | Publication date |
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KR200483126Y1 (en) | 2017-04-05 |
KR20130003214U (en) | 2013-05-30 |
TWM442494U (en) | 2012-12-01 |
CN202547402U (en) | 2012-11-21 |
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