JPS6183873A - Tunnel kiln - Google Patents
Tunnel kilnInfo
- Publication number
- JPS6183873A JPS6183873A JP20454184A JP20454184A JPS6183873A JP S6183873 A JPS6183873 A JP S6183873A JP 20454184 A JP20454184 A JP 20454184A JP 20454184 A JP20454184 A JP 20454184A JP S6183873 A JPS6183873 A JP S6183873A
- Authority
- JP
- Japan
- Prior art keywords
- zone
- heated
- workpiece
- nozzle
- atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- Tunnel Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（イ）発明の分野
この発明は、ワークを予熱、加熱さらに冷却するように
したトンネルキルンに関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of the Invention The present invention relates to a tunnel kiln that preheats, heats, and cools a workpiece.
（０） 発明の背景
従来、トンネルキルンは予熱帯、加熱帯および冷却帯で
雰囲気とワークとの熱伝達によりワークの加熱昇温を実
施していたが、熱伝達率も悪く予熱帯に排ガスを投入し
ても充分な省エネル千−にはならなかった。(0) Background of the Invention Traditionally, tunnel kilns heated and raised the temperature of the workpiece through heat transfer between the atmosphere and the workpiece in the pre-heating zone, heating zone, and cooling zone. Even if they were invested, the energy savings were not sufficient.
０ν 発明の目的
この発明は、冷却帯内部の昇温排出雰囲気を予熱帯内部
にエセクター状通路を通過噴出させて利用することので
きるトシネル士ルシの提供を第１の目的とする。0v OBJECT OF THE INVENTION The first object of the present invention is to provide a heating system that can utilize the heated exhaust atmosphere inside the cooling zone by ejecting it through an esector-like passage into the preheating zone.
しかも、この発明は、上記の昇温雰囲気の噴出力により
予熱帯内に旋回気流を発生させて熱伝達率を向上させ、
ワークを均一に予熱することのできるトシネル士ルトシ
の提供を第２の目的とする。Moreover, this invention improves the heat transfer coefficient by generating a swirling airflow in the preheating zone by the ejection force of the heated atmosphere,
A second object is to provide a toshinerutoshi that can uniformly preheat a workpiece.
さらに、この発明は、昇温した燃焼空気により加熱帯の
バーナー焚量を減少し、省エネル千−を達成すると共に
炉長を短縮することのできるトシネル牛ルシの提供を第
３の目的とする。Furthermore, the third object of the present invention is to provide a toshinerugyurushi that can reduce the amount of burner firing in the heating zone by using the heated combustion air, thereby achieving energy savings of 1,000 yen and shortening the length of the furnace. .
（ニ） 発明の構成
この発明は、冷却帯内部と予熱帯のエゼクター状ノズル
とを連通して、冷却帯内の加熱ワークご冷却した昇温雰
囲気を、前記ノズルより予熱帯内に噴出し、この噴出力
により予熱帯内の雰囲気と共に、予熱帯内に旋回気流を
形成したトシネル牛ルシであることを特徴とする。(d) Structure of the Invention This invention communicates the inside of the cooling zone with an ejector-shaped nozzle in the preheating zone, and ejects a heated atmosphere that has cooled the heated workpiece in the cooling zone into the preheating zone from the nozzle. The jetting force is characterized by the fact that a swirling air current is formed in the preheating zone together with the atmosphere in the preheating zone.
（ホ） 発明の実施例 この発明の実施例を、以下図面に基づいて詳述する。(e) Examples of the invention Embodiments of the present invention will be described in detail below based on the drawings.
図面はトシネル牛ルシを示し、第１図はトシネル士ルシ
の側面図で、ワークの進行方向を矢印で示し１図中符号
外）は予熱帯、（イ）は加熱帯、Ｃ）は冷却帯である。The drawing shows the Toshineru Ushirushi, and Figure 1 is a side view of the Toshinerushi Rushi, with arrows indicating the direction of movement of the workpiece. It is.
第２図は＠１図Ａ−Ａｌｌにおける断面図、第３１ｆｆ
ｌＧ；ｉ同Ｂ−ＢＭ、 第４図Ｇ；ｉ第１９０−ＣＩＡ
における断面図、第５図は第４図（Ｗ）部の詳細図であ
る。Figure 2 is a cross-sectional view at @1 Figure A-All, No. 31ff
lG;i B-BM, Figure 4G;i No. 190-CIA
FIG. 5 is a detailed view of the section (W) in FIG.
第１図および第２図において、（１）は熱交換器、（２
）は冷却ノズル、（３）はワークで、このワーク（３）
は加熱帯（力にて加熱昇温される。In Figures 1 and 2, (1) is a heat exchanger, (2
) is the cooling nozzle, (3) is the workpiece, and this workpiece (3)
is a heating zone (heated and heated by force).
（４）は台車で、この台車（４）はワーク（３）の搬送
ボであり、（６）は燃焼空気用送風機である。(4) is a truck, and this truck (4) is a conveyor for the workpiece (3), and (6) is a blower for combustion air.
冷却帯Ｃ）には熱交換器（１）が加熱帯出口附近より適
当幅に設置されており、送風機（６）よりノズル（２）
を通じて噴出され旋回流動する。In the cooling zone C), a heat exchanger (1) is installed at an appropriate width from the vicinity of the heating zone outlet, and a nozzle (2) is installed from the blower (6).
It is ejected through and flows in a swirling manner.
この冷却帯Ｃ）内の昇温雰匣気の対流伝熱と。and convective heat transfer of the heated atmosphere within this cooling zone C).
加熱帯ざ）より移送された高温ワーク（１）の輻射熱の
輻射伝熱により、燃焼空気用送風機（５）より送られて
きた熱交換器（１）内の燃焼空気を昇温する。The combustion air in the heat exchanger (1) sent from the combustion air blower (5) is heated by radiant heat transfer of the radiant heat of the high temperature workpiece (1) transferred from the heating zone (heating zone).
昇温された燃焼空気は第８図に示す加熱帯α）のバーナ
ー（８）の燃焼用空気口より移送されて、省エネルず−
に貢献している。The heated combustion air is transferred from the combustion air port of the burner (8) in the heating zone α) shown in Fig. 8, resulting in energy savings.
Contributing to
冷却帯■内の雰囲気は送風機（γ）により予熱帯内へ移
送されて第４図に示すノズル（９）より噴出される。The atmosphere in the cooling zone (2) is transferred to the preheating zone by the blower (γ) and is ejected from the nozzle (9) shown in FIG.
上記加熱帯■）ではバーナー（８）が対向して高さを変
えて設置してあり、燃焼ガスは炉内をワーク進行方向の
法線方向に渦巻状に旋回してワーク（３）を加熱昇温す
るため、公知の炉のように雰囲気ガスよりの輻射伝熱主
体の加熱ではなく、・対流伝熱が主体であり効率のよい
加熱が実施される。In the above-mentioned heating zone (■), burners (8) are installed facing each other at different heights, and the combustion gas swirls in the furnace in the normal direction of the progress of the workpiece to heat the workpiece (3). In order to raise the temperature, heating is performed mainly by convection heat transfer, rather than heating mainly by radiation heat transfer from atmospheric gas as in known furnaces, and efficient heating is performed.
予熱帯内では冷却帯Ｃ）より送られる高温の雰囲気をノ
ズル（９）より噴出させて、第５図に示す絞り管θ０）
を貫通して、炉内に噴出する０ノズル（９）と絞り管α
Ｏ）とはエセクターを形成しており、絞り管（１０）の
ノズル側隙間ｑ℃より炉内雰囲気を吸引してノズル（９
）よりの噴流と混合して子熱帯囚内を旋回する。ノズル
（９）は旋回流の流動方向をワーク進行方向に対向する
ように、ノズル（９）の噴出角が設定されている。故に
噴流によるワーク（３ンへの熱伝達は主として対流伝熱
となって効率良くワークを予熱昇温する。In the preheating zone, the high temperature atmosphere sent from the cooling zone C) is ejected from the nozzle (9) and the constrictor tube θ0) shown in Fig. 5 is used.
0 nozzle (9) and throttle pipe α that eject into the furnace through
O) forms an esector, and the furnace atmosphere is sucked through the nozzle side gap q°C of the throttle tube (10) and the nozzle (9
) mixes with the jet stream and swirls inside the child's tropical prison. The ejection angle of the nozzle (9) is set so that the flow direction of the swirling flow is opposite to the workpiece advancing direction. Therefore, the heat transfer to the workpiece by the jet flow is mainly convection heat transfer, which efficiently preheats and raises the temperature of the workpiece.
（〜 発明の効果
ごの発明によれば、冷却帯内部の昇温排出雰囲気を予熱
帯内部に噴出して再利用することができる。(~ Effects of the Invention According to the invention, the heated exhaust atmosphere inside the cooling zone can be ejected into the inside of the preheating zone and reused.
しかも、上記昇温雰囲気の噴出力により予熱帯内に旋回
気流を発生させて熱伝達率を向上させ、ワークを均一に
予熱する口とができる０さらに、昇温した燃焼空気によ
り加熱帯のバーナー焚量を減少し、省エネル千−を烈す
ると共に炉長を短縮することができる０In addition, the ejection force of the heated atmosphere generates a swirling airflow in the preheating zone, improving the heat transfer coefficient, and creating an opening for uniformly preheating the workpiece. It is possible to reduce the amount of combustion, significantly save energy, and shorten the length of the furnace.
図面は本発明の一実施例を示し、第１図はトンネルキル
ンの簡略側面図、第２図は第１図Ａ−Ａ線における断面
図、第３図は第１図Ｂ−Ｂ＠における断面図、第４図は
第１図Ｃ−Ｃ＠における断面図、第５図は第４図の一部
の拡大断面図である。
（１）・・・熱交換器、（３）・・・ワーク、（８）・
・・バーナー、（９）・・・ノズル、鉤・・・予熱帯、
（Ｙ）・・・加熱帯、Ｃ）・・・冷却帯。
特許出願人 ０ザイ工業株式会社
ｑｇ、ノ゛ｉ：；；：″ｊ：
２べ４ め
バど必
慢
）Ｋ、５″ がへThe drawings show one embodiment of the present invention, FIG. 1 is a simplified side view of a tunnel kiln, FIG. 2 is a sectional view taken along the line A-A in FIG. 4 is a sectional view taken along the line CC@ in FIG. 1, and FIG. 5 is an enlarged sectional view of a part of FIG. 4. (1) Heat exchanger, (3) Work, (8)
... Burner, (9) ... Nozzle, Hook ... Preheating zone,
(Y)... Heating zone, C)... Cooling zone. Patent applicant: 0zai Kogyo Co., Ltd.
Claims (2)
ネルキルンにおいて、上記冷却帯内部と予熱帯のノズル
とを連通して、冷却帯内の加熱ワークを冷却した昇温雰
囲気を、前記ノズルより予熱帯内にエゼクター状通路よ
り噴出し、この噴出力により予熱帯内の雰囲気を吸引し
て予熱帯内に旋回気流を形成するように構成したことを
特徴とするトンネルキルン。(1) In a tunnel kiln in which a preheating zone, a heating zone, and a cooling zone are sequentially arranged, the inside of the cooling zone is communicated with a nozzle in the preheating zone, and the heated atmosphere that cools the heated workpiece in the cooling zone is transferred to the nozzle. A tunnel kiln characterized in that the air is ejected from an ejector-like passage into the preheating zone, and the atmosphere in the preheating zone is sucked by the ejection force to form a swirling airflow in the preheating zone.
ナーの燃焼空気口とを連通して、熱交換器で昇温した空
気を、前記バーナーの燃焼空気として用いるようにした
特許請求の範囲第１項記載のトンネルキルン。(2) A patent claim in which a heat exchanger installed in the cooling zone is communicated with a combustion air port of a burner in the heating zone, and the air heated by the heat exchanger is used as combustion air for the burner. The tunnel kiln according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20454184A JPS6183873A (en) | 1984-09-28 | 1984-09-28 | Tunnel kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20454184A JPS6183873A (en) | 1984-09-28 | 1984-09-28 | Tunnel kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6183873A true JPS6183873A (en) | 1986-04-28 |
Family
ID=16492229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20454184A Pending JPS6183873A (en) | 1984-09-28 | 1984-09-28 | Tunnel kiln |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6183873A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514206A (en) * | 1974-07-01 | 1976-01-14 | Harima Refractories Co Ltd | CHOKOONTONNERUKIRUN |
| JPS5528434A (en) * | 1978-08-21 | 1980-02-29 | Showa Denko Kk | Tunnel kiln |
| JPS58193313A (en) * | 1982-05-04 | 1983-11-11 | Daido Steel Co Ltd | Combustion furnace |
-
1984
- 1984-09-28 JP JP20454184A patent/JPS6183873A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514206A (en) * | 1974-07-01 | 1976-01-14 | Harima Refractories Co Ltd | CHOKOONTONNERUKIRUN |
| JPS5528434A (en) * | 1978-08-21 | 1980-02-29 | Showa Denko Kk | Tunnel kiln |
| JPS58193313A (en) * | 1982-05-04 | 1983-11-11 | Daido Steel Co Ltd | Combustion furnace |
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