JPH09227931A - Heating furnace and continuous heating furnace - Google Patents
Heating furnace and continuous heating furnaceInfo
- Publication number
- JPH09227931A JPH09227931A JP3601296A JP3601296A JPH09227931A JP H09227931 A JPH09227931 A JP H09227931A JP 3601296 A JP3601296 A JP 3601296A JP 3601296 A JP3601296 A JP 3601296A JP H09227931 A JPH09227931 A JP H09227931A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- heating furnace
- temperature distribution
- heated
- combustion
- 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
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、均熱炉等の加熱炉
及び連続式加熱炉に関し、特に、サイドバーナ形の燃焼
装置を備える加熱炉に係り、燃焼排ガス層の厚みによる
放射熱によって炉幅方向の温度分布を制御する加熱炉に
係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating furnace such as a soaking furnace and a continuous heating furnace, and more particularly to a heating furnace provided with a side burner type combustion device, which is heated by radiant heat due to the thickness of a combustion exhaust gas layer. The present invention relates to a heating furnace that controls the temperature distribution in the width direction.
【０００２】[0002]
【従来の技術】従来のサイドバーナ形の加熱炉の一例に
ついて、図５を参照して説明する。図５は加熱炉の上部
のみを示しており、その両側壁に対向する燃焼バーナ２
が設けられ、拡散火炎Ｆ１によって、加熱炉１内に載置
された鋼材Ｐが加熱されている。その炉幅方向（バーナ
軸芯方向）の温度分布は、図６に示すように、炉中央部
Ｃの温度が低く、炉の端部１ａ，１ｂが高温状態となる
傾向にある。従って、加熱炉内の被加熱物面の温度を均
一に制御する種々の方法がなされている。2. Description of the Related Art An example of a conventional side burner type heating furnace will be described with reference to FIG. FIG. 5 shows only the upper part of the heating furnace, and the combustion burner 2 facing both side walls thereof.
Is provided, and the steel material P placed in the heating furnace 1 is heated by the diffusion flame F1. As for the temperature distribution in the furnace width direction (burner axis direction), as shown in FIG. 6, the temperature in the furnace central portion C is low and the furnace ends 1a and 1b tend to be in a high temperature state. Therefore, various methods for uniformly controlling the temperature of the surface of the object to be heated in the heating furnace are used.
【０００３】加熱炉内の温度分布を制御する方法とし、
被加熱物上部に熱遮蔽板を設けて温度分布を制御する方
法がある。例えば、図７は、特開昭６２−１２４２１６
号公報に開示された加熱炉の炉幅方向の温度分布を制御
する方法を示している。図７（ａ），（ｂ）に示すよう
に、連続式加熱炉１の単位炉１ａ，１ｂ…のそれぞれの
両側に加熱用バーナ２が設けられ、その装入口１Ａから
抽出口１Ｂに向かって鋼材Ｐを移動させ、その間にバー
ナ２で鋼材Ｐを加熱している。As a method for controlling the temperature distribution in the heating furnace,
There is a method of controlling the temperature distribution by providing a heat shield plate on the upper part of the object to be heated. For example, FIG. 7 shows Japanese Patent Laid-Open No. 62-124216.
It shows a method of controlling the temperature distribution in the furnace width direction of the heating furnace disclosed in Japanese Patent Laid-Open Publication No. 2003-242242. As shown in FIGS. 7 (a) and 7 (b), heating burners 2 are provided on both sides of each of the unit furnaces 1a, 1b, ... The steel material P is moved and the steel material P is heated by the burner 2 during that time.
【０００４】鋼材Ｐを加熱する際に、例えば、鋼材Ｐが
熱間圧延機に噛み込み易くするために、鋼材Ｐの圧延開
始端部の温度を高温にし、徐々に加熱温度を低下するよ
うに加熱する方法、所謂、傾斜加熱方法を実施すること
がある。この傾斜加熱方法は、加熱炉１内に鋼材Ｐの上
部に熱遮蔽板３を斜めに傾斜させて被加熱物Ｐの炉幅方
向の温度分布を制御する方法である。When the steel material P is heated, for example, in order to facilitate the biting of the steel material P into the hot rolling mill, the temperature at the rolling start end of the steel material P is increased to gradually decrease the heating temperature. A heating method, a so-called gradient heating method, may be carried out. This gradient heating method is a method of controlling the temperature distribution in the furnace width direction of the object to be heated P by inclining the heat shield plate 3 obliquely above the steel material P in the heating furnace 1.
【０００５】また、図８の加熱炉は、バーナ２の周辺が
最も高温になる炉であり、このような場合は、バーナ２
の下部炉壁に張出遮蔽部３ａを設けてその下部の温度を
低下させるようにして、炉幅方向（バーナ軸芯方向）の
温度分布を均一に制御する方法がある。The heating furnace shown in FIG. 8 is a furnace in which the temperature around the burner 2 becomes the highest. In such a case, the burner 2
There is a method of uniformly controlling the temperature distribution in the furnace width direction (burner axis direction) by providing the overhanging shield portion 3a on the lower furnace wall and lowering the temperature of the lower portion.
【０００６】また、図９は、特開平７−９７６２０号公
報に開示された加熱炉の燃焼方法を示しており、加熱炉
４の炉壁にバーナ２が備えられ、その天井部に多数の燃
料ノズル５が設けられている。この加熱炉４では、バー
ナ２を燃焼させるとともに、炉の中央部は天井に設けら
れた燃料ノズル５を用いて燃焼させることによって炉内
温度を昇温して、炉幅方向の温度分布を制御するもので
ある。この加熱炉は、バーナ２の拡散火炎６ａ，６ｂが
比較的短い場合や炉幅を長く設定する必要がある場合
に、炉の中央部に設けられた燃料ノズル５を燃焼させ
て、その火炎６ｃによって炉幅方向の温度分布を均一に
制御している。FIG. 9 shows a combustion method for a heating furnace disclosed in Japanese Patent Application Laid-Open No. 7-97620. A nozzle 5 is provided. In this heating furnace 4, the burner 2 is burned, and the central portion of the furnace is burned by using a fuel nozzle 5 provided on the ceiling to raise the temperature inside the furnace and control the temperature distribution in the furnace width direction. To do. In this heating furnace, when the diffusion flames 6a and 6b of the burner 2 are relatively short or when it is necessary to set the furnace width long, the fuel nozzle 5 provided in the central portion of the furnace is burned to generate the flame 6c. The temperature distribution in the width direction of the furnace is controlled uniformly by.
【０００７】[0007]
【発明が解決しようとする課題】従来の加熱炉では、図
６に示すように、炉の中央部Ｃの温度が低下する欠点が
有り、この温度低下部分を拡散火炎長を延ばして補うの
は種々の問題がある。その解決方法として、図７，図８
に示すように、熱遮蔽板を用いて温度分布を制御する方
法があるが、炉内に設置される熱遮蔽板を移動して炉幅
方向の温度分布を任意に制御することは極めて困難なこ
とであり、炉幅方向の温度制御が柔軟に対応はできない
欠点がある。更に、炉内に熱遮蔽板を設けることは、加
熱炉の加熱能率の低下をもたらすおそれがある。The conventional heating furnace has a drawback that the temperature of the central portion C of the furnace is lowered as shown in FIG. 6, and it is necessary to extend the diffusion flame length to compensate for this temperature lowered portion. There are various problems. As a solution to this, FIG. 7 and FIG.
Although there is a method of controlling the temperature distribution using a heat shield plate as shown in Fig. 2, it is extremely difficult to control the temperature distribution in the furnace width direction by moving the heat shield plate installed in the furnace. Therefore, there is a drawback that the temperature control in the furnace width direction cannot be flexibly dealt with. Further, providing the heat shield plate in the furnace may cause a decrease in heating efficiency of the heating furnace.
【０００８】更に、熱遮蔽板による方法は、加熱炉に設
置される燃焼装置の形態によって、図８に示すように、
燃焼バーナにより単純に拡散火炎を防ぐもの以外は、炉
幅方向の温度分布の制御が必ずしも充分になし得ない欠
点がある。また、中央部の温度を熱遮蔽板を設置して制
御する方法は、その形状が複雑であり、しかも、高額な
設備投資を要する欠点がある。更に、熱遮蔽板には寿命
があり、定期的に保守点検等を行わねばならない欠点が
ある。Further, according to the method using the heat shield plate, as shown in FIG. 8, depending on the form of the combustion apparatus installed in the heating furnace,
There is a drawback in that the temperature distribution in the furnace width direction cannot be sufficiently controlled, except that the combustion burner simply prevents diffusion flames. In addition, the method of controlling the temperature of the central portion by installing the heat shield plate has a drawback that its shape is complicated and that expensive equipment investment is required. Further, the heat shield plate has a long life, and there is a drawback that maintenance and inspection must be regularly performed.
【０００９】また、図９に示すように、加熱炉の側壁に
設けられた燃焼バーナの拡散火炎が十分に炉中央部に達
し得ない場合、加熱炉内の中央部の温度が低下する領域
に燃焼バーナ５による燃焼によって温度分布を均等に制
御する方法では、燃焼設備費用が高騰する欠点がある。Further, as shown in FIG. 9, when the diffusion flame of the combustion burner provided on the side wall of the heating furnace cannot fully reach the central portion of the furnace, the temperature in the central portion of the heating furnace is lowered. The method of uniformly controlling the temperature distribution by the combustion by the combustion burner 5 has a drawback that the cost of combustion equipment increases.
【００１０】本発明は、上述のような課題に鑑みなされ
たものであり、炉幅方向の温度分布が容易に制御し得る
加熱炉及び連続式加熱炉を提供することを目的とするも
のである。The present invention has been made in view of the above problems, and an object of the present invention is to provide a heating furnace and a continuous heating furnace in which the temperature distribution in the furnace width direction can be easily controlled. .
【００１１】[0011]
【課題を解決するための手段】本発明は、上述の課題を
解決するためになされたものであり、請求項１に記載の
発明は、サイドバーナ形の燃焼装置を備える加熱炉に於
いて、前記加熱炉の天井に高低差を設けて、該天井の高
低差による燃焼ガス層の厚さに依存する放射熱量の差に
よって該加熱炉内の被加熱物平面の温度分布を制御する
ことを特徴とする加熱炉であり、図３に示すように、燃
焼ガスの厚みが増すに連れて燃焼ガスによる熱放射の射
出率は上昇することを示しており、天井の高低差によっ
て燃焼ガス層の厚みに変化を与え、燃焼ガス層の放射熱
量を変化させることによって、炉幅方向或いは被加熱物
平面の温度分布を制御するものである。The present invention has been made in order to solve the above-mentioned problems, and the invention according to claim 1 is a heating furnace equipped with a side burner type combustion apparatus, A height difference is provided on the ceiling of the heating furnace, and the temperature distribution on the plane of the object to be heated in the heating furnace is controlled by the difference in the amount of radiant heat depending on the thickness of the combustion gas layer due to the height difference of the ceiling. As shown in FIG. 3, it is shown that the emission rate of thermal radiation due to the combustion gas increases as the thickness of the combustion gas increases, and the thickness of the combustion gas layer varies depending on the height difference of the ceiling. To change the radiant heat of the combustion gas layer to control the temperature distribution in the furnace width direction or in the plane of the object to be heated.
【００１２】また、請求項２に記載の発明は、サイドバ
ーナ形の燃焼装置を備える連続式加熱炉に於いて、前記
連続式加熱炉が複数の単位炉からなり、各単位炉の少な
くとも一つの単位炉の天井に高低差を設けて、該天井の
高低差による燃焼ガス層の厚さに依存する放射熱量の差
によって該加熱炉内の被加熱物平面の温度分布を制御し
たことを特徴とする連続式加熱炉であり、上記説明した
原理に基づいて、単位炉の少なくともひとつの単位炉の
炉内温度分布を制御している。The invention according to claim 2 is a continuous heating furnace equipped with a side burner type combustion apparatus, wherein the continuous heating furnace comprises a plurality of unit furnaces, and at least one of the unit furnaces is provided. A height difference is provided on the ceiling of the unit furnace, and the temperature distribution on the plane of the object to be heated in the heating furnace is controlled by the difference in the amount of radiant heat depending on the thickness of the combustion gas layer due to the height difference of the ceiling. In the continuous heating furnace, the temperature distribution in the furnace of at least one unit furnace of the unit furnace is controlled based on the principle described above.
【００１３】[0013]
【発明の実施の形態】以下、本発明に係る実施の形態に
ついて図面に基づいて説明する。図１は本発明に係る加
熱炉の一実施例を示しており、鋼材Ｐ等を加熱する均熱
炉、或いは連続式加熱炉の単位炉等の加熱炉１０であ
る。加熱炉１０の側壁１０ａ，１０ｂに蓄熱式バーナ等
の燃焼バーナ２ａ，２ｂがそれぞれ設けられたサイドバ
ーナ形の加熱炉である。その加熱炉１０の天井部１１は
高低差が設けられ、加熱炉１０の内断面形状が台形凸状
を呈している。加熱炉１０は炉側壁１０ａの上部から張
り出した上部炉壁１１ａが設けられ、その上部炉壁１１
ａから傾斜した立設壁１１ｃが設けられて上部炉壁１１
ｂが支えられている。上部炉壁１１ａの高さはＡであ
り、上部炉壁１１ｂの高さはＢである。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a heating furnace according to the present invention, which is a heating furnace 10 such as a soaking furnace for heating a steel material P or the like, or a unit furnace of a continuous heating furnace. This is a side burner type heating furnace in which combustion burners 2a and 2b such as a regenerative burner are provided on side walls 10a and 10b of the heating furnace 10, respectively. The ceiling 11 of the heating furnace 10 is provided with a height difference, and the inner cross-sectional shape of the heating furnace 10 has a trapezoidal convex shape. The heating furnace 10 is provided with an upper furnace wall 11a protruding from the upper part of the furnace side wall 10a.
The upper furnace wall 11 is provided with a standing wall 11c inclined from a.
b is supported. The height of the upper furnace wall 11a is A, and the height of the upper furnace wall 11b is B.
【００１４】このように天井部１１には高低差が形成さ
れており、炉幅をＷ1 とし、上部炉壁１１ｂの炉幅Ｗ2
とし、加熱炉の長さをＤとすると、主炉内容積Ｓ１は
（Ｗ1×Ａ×Ｄ）となり、上部容積Ｓ２は〔Ｗ2 ×（Ｂ
−Ａ）×Ｄ〕と表される。主炉内容積Ｓ１の燃焼ガス層
に、上方に張り出した部分の上部容積Ｓ２の燃焼ガス溜
まりが形成される。従って、被加熱物への放射熱量は、
主炉内容積Ｓ１の放射熱量Ｑ１にそのガス溜まりによる
上部容積Ｓ２による放射熱量Ｑ２が加算されたものとな
る。As described above, the height difference is formed in the ceiling portion 11, the furnace width is set to W 1, and the furnace width W 2 of the upper furnace wall 11b is set.
And the length of the heating furnace is D, the main furnace internal volume S1 becomes (W 1 × A × D) and the upper volume S2 becomes [W 2 × (B
-A) × D]. In the combustion gas layer of the main furnace internal volume S1, the combustion gas pool of the upper volume S2 of the portion protruding upward is formed. Therefore, the radiant heat to the object to be heated is
The amount of radiant heat Q1 in the main furnace internal volume S1 is added to the amount of radiant heat Q2 in the upper volume S2 due to the gas pool.
【００１５】次に、図２を参照して炉幅方向の温度分布
と炉高との関係から上記実施形態における被加熱物の温
度分布について説明する。図２の（イ）は、従来の加熱
炉（天井が平坦な加熱炉）のバーナ軸方向の温度分布を
示しており、中央部の被加熱物の温度が低下する温度分
布特性を示している。図２の（ロ）は、本実施形態の加
熱炉１０の炉幅方向（バーナ軸方向）の炉高を示し、図
２の（ハ）は、加熱炉１０による炉幅方向の被加熱物の
温度分布を示しており、平坦な温度分布特性を示してい
る。Next, referring to FIG. 2, the temperature distribution of the object to be heated in the above embodiment will be described from the relationship between the temperature distribution in the furnace width direction and the furnace height. FIG. 2A shows the temperature distribution in the burner axis direction of the conventional heating furnace (heating furnace having a flat ceiling), and shows the temperature distribution characteristic in which the temperature of the object to be heated in the central portion decreases. . 2B shows the furnace height in the furnace width direction (burner axis direction) of the heating furnace 10 of the present embodiment, and FIG. 2C shows the object to be heated in the furnace width direction by the heating furnace 10. The temperature distribution is shown and the temperature distribution characteristic is flat.
【００１６】図３は、燃焼ガス層の厚みに対する熱放射
の射出率との関係を示す図であり、図３から明らかなよ
うに、燃焼ガス温度Ｔ1 〜Ｔ3 が高ければ高い程、放出
率が高くなり、且つ、燃焼ガス層の厚みが厚くなるに連
れて燃焼ガス層による熱放射の射出率が増加することを
示している。すなわち、図２の（ロ）に示すように、加
熱炉の中央部の炉高を高くすることで、中央部の燃焼ガ
ス層の厚みを厚くすることができる。従って、この部分
の熱放射量が増加して、中央部の温度低下を補うことが
できる。その結果、被加熱物の温度分布は、図２の
（ハ）に示すような平坦な温度分布とすることができ
る。FIG. 3 is a diagram showing the relationship between the thickness of the combustion gas layer and the emission rate of thermal radiation. As is clear from FIG. 3, the higher the combustion gas temperature T 1 to T 3 , the higher the emission. It is shown that the emission rate of heat radiation by the combustion gas layer increases as the rate increases and the thickness of the combustion gas layer increases. That is, as shown in FIG. 2B, by increasing the furnace height in the central part of the heating furnace, the thickness of the combustion gas layer in the central part can be increased. Therefore, the amount of heat radiation in this portion is increased, and the temperature drop in the central portion can be compensated. As a result, the temperature distribution of the object to be heated can be a flat temperature distribution as shown in FIG.
【００１７】また、上記実施形態では、加熱炉１０の天
井部１１の断面形状は台形状であるが、この実施形態に
限定することなく、図４（ａ），（ｂ）に示すように、
天井部の炉内断面形状が四角形や放物線状の天井部１１
ａ，１１ｂであってもよい。すなわち、被加熱物の炉幅
方向の温度分布が低下する領域に対応して燃焼ガス溜ま
りを形成することによって、燃焼排ガスの放射熱量が増
大して被加熱物の炉内温度分布を平坦にするものであ
る。In the above embodiment, the ceiling 11 of the heating furnace 10 has a trapezoidal cross section, but the present invention is not limited to this embodiment, and as shown in FIGS. 4 (a) and 4 (b),
The ceiling section 11 has a rectangular or parabolic cross section in the furnace.
It may be a or 11b. That is, by forming a combustion gas pool corresponding to a region where the temperature distribution in the furnace width direction of the object to be heated decreases, the amount of radiant heat of the combustion exhaust gas increases and the temperature distribution in the furnace of the object to be heated becomes flat. It is a thing.
【００１８】無論、逆に被加熱物の温度分布が高い領域
の天井部分に炉内に突出する凸部を形成するか、或い
は、その領域の炉内容積を小さくして燃焼ガス溜まりを
少なくすることにより、その部分の温度を低下させるこ
とも可能である。このように、加熱炉の天井部を部分的
に高さに変化を与えることにより、熱放射量を調整する
ことができるので局所的に温度を制御することができ
る。Of course, conversely, a convex portion projecting into the furnace is formed in the ceiling portion of the region where the temperature distribution of the object to be heated is high, or the volume of the furnace in that region is reduced to reduce combustion gas accumulation. By doing so, it is possible to lower the temperature of that portion. In this way, by partially changing the height of the ceiling of the heating furnace, the amount of heat radiation can be adjusted, so that the temperature can be locally controlled.
【００１９】又、炉高を調整して燃焼ガス溜まりを調整
して、温度分布を制御する手段を連続式加熱炉に積極的
に利用することによって、各単位炉の平均温度を調整す
ることができる。Further, the average temperature of each unit furnace can be adjusted by positively utilizing the means for controlling the temperature distribution by adjusting the furnace height to adjust the combustion gas pool and controlling the temperature distribution. it can.
【００２０】[0020]
【発明の効果】上述のように、本発明によれば、加熱炉
の炉高に高低差を設けることによって、燃焼ガス層の厚
さを異ならせることによって放射熱量に変化を与えるこ
とによって、被加熱物の温度分布を制御するものであ
り、加熱炉内に熱遮蔽板を用いる必要がなく、且つ、被
加熱物の温度分布の経時変化が少なく、安定した温度分
布を形成できる利点がある。As described above, according to the present invention, by providing a height difference in the furnace height of the heating furnace, and by varying the thickness of the combustion gas layer, the amount of radiant heat is changed. Since it controls the temperature distribution of the heated object, there is no need to use a heat shield plate in the heating furnace, and there is an advantage that the temperature distribution of the object to be heated does not change with time and a stable temperature distribution can be formed.
【００２１】また、本発明によれば、連続式加熱炉の少
なくとも一つの単位炉の炉高に高低差を設けることによ
って、熱遮蔽板や燃焼バーナを天井部に設ける必要がな
く、設備費が安価であるとともに、保守点検が容易であ
り、且つ、より被加熱物のバーナ軸方向の温度分布が均
一な炉を形成することができる。Further, according to the present invention, by providing a height difference in the furnace height of at least one unit furnace of the continuous heating furnace, it is not necessary to provide a heat shield plate or a combustion burner at the ceiling portion, and the equipment cost is reduced. It is possible to form a furnace that is inexpensive, easy to maintain and inspect, and has a more uniform temperature distribution in the burner axis direction of the object to be heated.
【図１】本発明に係る加熱炉の一実施形態を示す断面図
である。FIG. 1 is a sectional view showing an embodiment of a heating furnace according to the present invention.
【図２】図１の加熱炉に於いて、被加熱物の炉幅方向に
おける温度分布と炉高との関係を示す図である。FIG. 2 is a diagram showing a relationship between a temperature distribution in a furnace width direction and a furnace height in the heating furnace of FIG.
【図３】燃焼ガス層の厚みに対する熱放射の射出率との
関係を示す図である。FIG. 3 is a diagram showing a relationship between a thickness of a combustion gas layer and an emission rate of thermal radiation.
【図４】（ａ），（ｂ）は本発明に係る加熱炉の実施形
態を示す断面図である。4 (a) and 4 (b) are cross-sectional views showing an embodiment of a heating furnace according to the present invention.
【図５】従来の加熱炉の燃焼状態を示す断面図である。FIG. 5 is a cross-sectional view showing a combustion state of a conventional heating furnace.
【図６】図５の加熱炉に於ける被加熱物の温度分布を示
す図である。FIG. 6 is a diagram showing a temperature distribution of an object to be heated in the heating furnace of FIG.
【図７】（ａ）は従来の連続式加熱炉の一例を示す断面
図であり、（ｂ）はＸ−Ｘ線に沿った断面図である。7A is a sectional view showing an example of a conventional continuous heating furnace, and FIG. 7B is a sectional view taken along line XX.
【図８】従来例の加熱炉の他の例を示す断面図である。FIG. 8 is a cross-sectional view showing another example of a conventional heating furnace.
【図９】従来例の加熱炉の燃焼状態を示す断面図であ
る。FIG. 9 is a cross-sectional view showing a combustion state of a conventional heating furnace.
２ａ，２ｂ 燃焼バーナ １０ 加熱炉 １０ａ，１０ｂ 側壁 １１ 天井部 １１ａ，１１ｂ 上部炉壁 １１ｃ 立設壁 2a, 2b Combustion burner 10 Heating furnace 10a, 10b Side wall 11 Ceiling part 11a, 11b Upper furnace wall 11c Standing wall
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２３Ｍ 3/12 Ｆ２３Ｍ 3/12 Ｆ２７Ｂ 9/36 Ｆ２７Ｂ 9/36 Ｆ２７Ｄ 7/02 Ｆ２７Ｄ 7/02 Ａ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display area F23M 3/12 F23M 3/12 F27B 9/36 F27B 9/36 F27D 7/02 F27D 7/02 A
Claims (2)
炉に於いて、 前記加熱炉の天井に高低差を設けて、該天井の高低差に
よる燃焼ガス層の厚さに依存する放射熱量の差によって
該加熱炉内の被加熱物平面の温度分布を制御することを
特徴とする加熱炉。1. A heating furnace provided with a side burner type combustion device, wherein a height difference is provided on a ceiling of the heating furnace, and a difference in radiant heat amount depending on a thickness of a combustion gas layer due to the height difference of the ceiling. A heating furnace for controlling the temperature distribution on the flat surface of an object to be heated in the heating furnace by means of.
式加熱炉に於いて、 前記連続式加熱炉が複数の単位炉からなり、各単位炉の
少なくとも一つの単位炉の天井に高低差を設けて、該天
井の高低差による燃焼ガス層の厚さに依存する放射熱量
の差によって該加熱炉内の被加熱物平面の温度分布を制
御したことを特徴とする連続式加熱炉。2. A continuous heating furnace provided with a side burner type combustion apparatus, wherein the continuous heating furnace comprises a plurality of unit furnaces, and at least one unit furnace of each unit furnace is provided with a height difference. The continuous heating furnace is characterized in that the temperature distribution on the plane of the object to be heated in the heating furnace is controlled by the difference in the amount of radiant heat depending on the thickness of the combustion gas layer due to the height difference of the ceiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601296A JPH09227931A (en) | 1996-02-23 | 1996-02-23 | Heating furnace and continuous heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601296A JPH09227931A (en) | 1996-02-23 | 1996-02-23 | Heating furnace and continuous heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09227931A true JPH09227931A (en) | 1997-09-02 |
Family
ID=12457848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3601296A Pending JPH09227931A (en) | 1996-02-23 | 1996-02-23 | Heating furnace and continuous heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09227931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026717A (en) * | 2011-10-03 | 2012-02-09 | Ihi Corp | Control method for regenerative burner, heating furnace, and soaking furnace |
-
1996
- 1996-02-23 JP JP3601296A patent/JPH09227931A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026717A (en) * | 2011-10-03 | 2012-02-09 | Ihi Corp | Control method for regenerative burner, heating furnace, and soaking furnace |
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