JPS60152636A - Soaking furnace - Google Patents
Soaking furnaceInfo
- Publication number
- JPS60152636A JPS60152636A JP990184A JP990184A JPS60152636A JP S60152636 A JPS60152636 A JP S60152636A JP 990184 A JP990184 A JP 990184A JP 990184 A JP990184 A JP 990184A JP S60152636 A JPS60152636 A JP S60152636A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- flame
- burners
- heated
- soaking
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/70—Furnaces for ingots, i.e. soaking pits
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
■１発明の背景
（産業上の利用分野）
本発明は、炉内温度を一定に保持して被加熱物を内部ま
で均一に加熱づ°る均熱炉の改良に関する。Detailed Description of the Invention ■1 Background of the Invention (Field of Industrial Application) The present invention relates to an improvement in a soaking furnace that maintains the temperature inside the furnace constant and uniformly heats the object to be heated to the inside. .
特に、熱源を改良した均熱炉に関する。In particular, it relates to a soaking furnace with an improved heat source.
均熱炉は、バーナの燃焼を制御して炉内を所定湿度に保
ち、その温度まで被加熱物を均一に加熱するものである
。ここで、炉内温度は、被加熱物の目的加熱温度に合せ
て調整される。例えば、被加熱物を１２５０℃に昇温さ
せる場合には、炉内温度は、１２５０℃を越えないよう
にバーナの燃焼が制御される。このとき、炉内温度は天
井から吊下げられている温度センサーによって炉内で最
もＦｍ瘍が高いバーナ付近で測定され、その測定箇所の
温度が所定温度に達すると、バーナの燃焼を絞ってそれ
以上の＾温にならないように制御されている。このため
、バーナの配置状況や炉内構造によっては、炉底部特に
炉内雰囲気が排出される排ガスポート付近の被加熱物の
温度は低くなり、被加熱物の全体が所望とする温度に均
一に加熱されるまでの時間即ち均熱時間が可成りかがる
ものとなる。A soaking furnace controls the combustion of burners to maintain the inside of the furnace at a predetermined humidity, and uniformly heats the object to be heated to that temperature. Here, the temperature inside the furnace is adjusted according to the target heating temperature of the object to be heated. For example, when heating the object to be heated to 1250°C, the combustion of the burner is controlled so that the temperature inside the furnace does not exceed 1250°C. At this time, the temperature inside the furnace is measured by a temperature sensor hanging from the ceiling near the burner with the highest Fm in the furnace, and when the temperature at that measurement point reaches a predetermined temperature, the combustion of the burner is throttled down. It is controlled so that the temperature does not exceed ^. Therefore, depending on the burner placement and furnace structure, the temperature of the heated object at the bottom of the furnace, especially near the exhaust gas port where the atmosphere inside the furnace is discharged, will be low, and the entire heated object will be kept at the desired temperature. The time required for heating, that is, the soaking time, becomes quite long.
特に、従来の均熱炉にあっては、互いに火炎の干渉を避
けるため、炉内を所定温度に昇温させるに必要な数のバ
ーナを間隔をあけて一列に並べて設置しているため、数
条の高潟疫領域（火炎流）と低濃度領域とが交互に配置
された斑のある状態となって被加熱物を加熱するので温
度分布の均一化に時間を要するものである。また、火炎
は、被加熱物に直接触れるとスケールを発生させるため
、被加熱物から岨して形成しな【プればならない土に、
従来の均熱炉におけるバーナは、円形火炎であるため、
相当被加熱物から１１１１１ノだ所に火炎軸を形成しな
ければならない。このため、灼熱時間が長くかかる欠点
がある。In particular, in conventional soaking furnaces, in order to avoid flame interference with each other, the number of burners required to raise the temperature inside the furnace to a predetermined temperature is installed in a row with intervals. Since the object to be heated is heated in a patchy state in which the high concentration regions (flame flow) and low concentration regions are alternately arranged, it takes time to make the temperature distribution uniform. In addition, since flames generate scale when they come into direct contact with the heated object, it must be removed from the heated object and onto the soil.
The burner in a conventional soaking furnace has a circular flame, so
The flame axis must be formed at a distance of 11111 degrees from the object to be heated. For this reason, there is a drawback that the burning time is long.
斯様に従来の均熱炉にあっては、均熱時間を長く要する
欠点があった。この欠点を改善するものとして、被加熱
物に直接触れずに１れＪれの近い所を流れる平たい膜状
の火炎が望まれる。しかし、このような膜状火炎を形成
づるフラットフレームバーブを提供しようとしても、そ
のオペレーションが極めて困難であると共に火炎を均一
に分散することは事実上困難であり、実現不可能であっ
た。As such, conventional soaking furnaces have the disadvantage of requiring a long soaking time. In order to improve this drawback, a flat, film-like flame that does not directly touch the object to be heated but flows close to it is desired. However, even if an attempt was made to provide a flat flame barb capable of forming such a film-like flame, its operation was extremely difficult, and it was virtually impossible to evenly disperse the flame.
■１発明の目的
本発明は、短時間均熱を可能とり−る均熱炉を提供する
ことを目的とする。(1) Purpose of the Invention The object of the present invention is to provide a soaking furnace that enables short-time soaking.
■０発明の構成
（発明の特徴的構成）
断かる目的を達成するため、本発明は、炉壁土部にバー
ナを設置し、燃焼排ガスを炉内壁に沿ってＵターンさＵ
炉壁下部の排ガスボートから排出させる間に対流伝熱に
より被加熱物を均一に加熱する均熱炉において、二基の
バーナをその火炎噴流軸が炉内において交差すべく向い
合せて炉壁に少な（とも一対設置することにより、炉内
へ噴射された直後の火炎同士をｉＩ突させて膜状の火炎
に合成するようにしたものである。■0 Structure of the Invention (Characteristic Structure of the Invention) In order to achieve the above object, the present invention installs a burner in the furnace wall soil, and directs the combustion exhaust gas in a U-turn along the furnace inner wall.
In a soaking furnace that uniformly heats the object by convection heat transfer while discharging from the exhaust gas boat at the bottom of the furnace wall, two burners are placed facing each other so that their flame jet axes intersect within the furnace wall. By installing a pair of injectors, the flames immediately after being injected into the furnace collide with each other to form a film-like flame.
（発明の具体的構成）
以下、本発明の構成を図面に示す一実施例に基づいて詳
細に説明する。(Specific Configuration of the Invention) Hereinafter, the configuration of the present invention will be described in detail based on an embodiment shown in the drawings.
第１図に本発明の均熱炉をスラブ用均熱炉に応３−
用した一実施例を斜視図で示す。この均熱炉は、燃焼機
器即ちバーナの構造を異にする点を除いて一般的なスラ
ブ用均熱炉と構成を同様にしている。FIG. 1 shows a perspective view of an embodiment in which the soaking furnace of the present invention is applied to a soaking furnace for slabs. This soaking furnace has the same structure as a general soaking furnace for slabs, except that the structure of the combustion equipment, that is, the burner, is different.
即ち、該均熱炉は、耐火物（炉本体）１で包囲された燃
焼室（以下炉内とも古う）２内に被加熱物３を収容し、
燃焼ＩＩＩ器４によって直接加熱されて高温となったガ
ス（以下燃焼ガスという）を燃焼室２内に導入して対流
させる間に被加熱物３を対流伝熱により加熱するもので
ある。ここで、被加熱物３を燃焼室２内に搬入、搬出す
る手段は、図示しないが、機械的あるいは手段的なもの
であって、連続的にあるいは間欠的に作動するものであ
る。例えば、ビット式灼熱炉の場合、燃焼室の天井の搬
入・搬出部から被加熱物を土げ下しするクレーン方式も
のが好適であるし、連続式均熱炉の場合や燃焼室の側壁
の一つを開閉可能に【ノて被加熱物を搬入搬出するタイ
プの均熱炉の場合は被加熱物３を載置させた状態で出入
り可能な台車７を利用した台車方式のものが好適である
。また、炉内圧のバランスを取るため炉壁下部の排ガス
ポー４−
ト５から燃焼ガスは煙道（図示省略）へ排出される。通
常、この燃焼排ガスは、廃熱回収装＠（図示省略）を通
して煙突（図示省略）から排出され、燃焼機器４の燃焼
用空気を予熱することにより、廃熱回収が図られている
。That is, the soaking furnace houses an object to be heated 3 in a combustion chamber (hereinafter also referred to as the inside of the furnace) 2 surrounded by a refractory (furnace body) 1,
Gas (hereinafter referred to as combustion gas) that has been directly heated to a high temperature by the combustion chamber 4 is introduced into the combustion chamber 2 and caused to convect, and the object to be heated 3 is heated by convective heat transfer. Here, the means for carrying the heated object 3 into and out of the combustion chamber 2 is not shown, but is mechanical or instrumental, and operates continuously or intermittently. For example, in the case of a bit-type sintering furnace, it is preferable to use a crane system that lowers the material to be heated from the loading/unloading section on the ceiling of the combustion chamber, and in the case of a continuous soaking furnace or In the case of a soaking furnace of the type in which the object to be heated is brought in and taken out, it is preferable to use a trolley system that uses a trolley 7 that can be moved in and out with the object to be heated 3 placed thereon. be. Further, in order to balance the pressure inside the furnace, combustion gas is discharged from an exhaust gas port 4-5 at the lower part of the furnace wall to a flue (not shown). Usually, this combustion exhaust gas is discharged from a chimney (not shown) through a waste heat recovery device (not shown), and waste heat is recovered by preheating the combustion air of the combustion equipment 4.
燃焼機器４は、二基−組のバーナ６△、６Ｂによって構
成され、温度分布を一様にするため、燃焼室２内を所定
温度に昇温させるに必要な熱量を複数対のバーナ鮮から
得るべく分割されている。The combustion device 4 is composed of two sets of burners 6△ and 6B, and in order to make the temperature distribution uniform, the amount of heat necessary to raise the temperature inside the combustion chamber 2 to a predetermined temperature is obtained from the plurality of pairs of burners. It is divided to obtain.
一対のバーナ６Ａ、６Ｂは、火炎噴流軸ＯＡ、ＯＢが燃
焼室２内において交差するように向い合せて設置されて
いる。このときの火炎ＦＡ、ＦＢ同士のバーナ前方にお
ける衝突角（資）即ち火炎噴流軸ＯＡ、Ｏ８，の交差角
度θは、１５°〜１６００の範囲に採ることが好ましい
。第４図の水流モデルの実験結果を示す図面から明らか
なように、１７８６付近になると衝突時に互いに流れを
乱して全方位に火炎が広がろうとし、一定方向に向かお
うとしない。即ち、火炎の逆流を招く虞れがある。The pair of burners 6A and 6B are installed facing each other so that the flame jet axes OA and OB intersect within the combustion chamber 2. At this time, the angle of collision between the flames FA and FB in front of the burner, that is, the intersection angle θ of the flame jet axes OA and O8, is preferably set in the range of 15° to 1600°. As is clear from the drawing showing the experimental results of the water flow model in Fig. 4, when the flames reach around 1786, the flames tend to disturb each other and spread in all directions when they collide, and do not move in a fixed direction. That is, there is a possibility that flame backflow may occur.
また、Ｏ″に接近するとほぼ平行な流れとなって効果的
な噴流の衝突が１９られない。最も、Ｒ適衝突角度及び
好適衝突角１す範囲ｉｔ、即ら、火炎衝突の効果を発揮
１ノかつ火炎の方向性を失わな（１程度の衝突角度は、
対を成すバーナからの火炎噴流の比の選択によ−）でｔ
、ｉ名１変動１Ｊるであろう７！Ｊ（、それぞれを好）
ト【範囲においで選択すれｔ、ｆ ＩＩＱね１５°〜１
６０６の範囲に収まる。また、火炎１：△。In addition, when approaching O'', the flow becomes almost parallel and effective jet collision cannot be achieved.The most effective collision angle is the range of R suitable collision angle and suitable collision angle 1, that is, the effect of flame collision is exerted. and do not lose the direction of the flame (the collision angle of about 1 is
By selecting the ratio of the flame jets from the paired burners -) at t
, i name 1 change 1J will be 7! J(, prefer each)
[Select within the range t, f IIQ 15° ~ 1
It falls within the range of 606. Also, flame 1: △.
ＦＢ同士の衝突は燃焼室２内への噴躬直４Ｕ Ｇこ★に
されることが好ましい。パーツ゛タイルＩ）Ｘら［当１
１１１１れた所での衝突は、衝突する以前に周囲の空気
を取込Δ、で速度がｉ［（＜ ’ｃＫるため、衝突（］
ても膜状の噴流を合成ゴることなく層の厚い円形噴流の
まま流ねる虞れがある１ノ、被加熱物３の一部を膜状火
炎で包囲し得ない事態を惹き起す虞れがある。そこで、
火炎「Δ、ＦＢ同上の衝突は、バーナ６△。It is preferable that the collision between the FBs occurs directly into the combustion chamber 2. Parts tile I)
In a collision at a point where 1111
However, there is a risk that the film-like jet may flow as a thick circular jet without being synthesized, and there is a risk that a part of the object to be heated 3 may not be surrounded by the film-like flame. There is. Therefore,
Flame “Δ, FB same as above collision is burner 6△.
６Ｂから噴射した直後でｆｌつ７°〜１６０°の交差角
θの範囲、好ましくは４０’〜１１０６の範囲で行なわ
せることが肝要である。Immediately after injection from 6B, it is important to carry out the injection at an intersection angle θ in the range of 7° to 160°, preferably in the range of 40′ to 1106°.
一対のバーナ６△、６Ｂから夫々噴射される火炎噴流Ｆ
Ａ、ＦＢの対流比（よ、１：１であることが燃焼制御を
容易にする上で好適であるが、著しく流ｍ比を（−よら
ばない範囲において自由に選択できる、１例えば、１：
０．４２を越えない範囲では可能であることが経験的に
知り得た。経験的に古って、１：０．４２を越える流ｍ
比の採用は噴流衝突の影響が減少して衝突ざ「ないのと
同じこととなるので好ましくない。尚、バーナ６Ａとバ
ーナ６Ｂとの火炎噴流「△、ＦＢの流量比即ち燃焼…の
比を１：１以外に取る場合、いずれのバーナの燃焼ｆｆ
１を大ぎくするかは、上述の流ｍ比の範囲内であれば火
炎の膜状化に与える影響においてはｉＩ要な問題でない
が、衝突によ−）て生ずる合成火炎の噴ｑ寸方向には大
きな影響を与える。つまり、バーナ６△と６Ｂの燃焼ｍ
比即ち火炎噴流流ｍ比を制御づることににす、バーナの
取付角戚等の設定を変更けずに合成火炎「Ｃの噴射方向
をｉｌＪ ｆｉｌｌできる。したがって、被加熱物３例
えばスラブの厚さが異なるものが搬入されたときには、
バーナ６Ａ、６１３の取付状態はそのままにして燃焼□
□□を変えるだけで、火炎「Ｃを上方あるいは下方に振
つて被加熱物３０近くを直接触れることなくづれ１れに
流Ｊよ）にｉｌｉ制御できる１、このことから、バーナ
６Δ、６１１の対向状態は、１）ホの所定の′９＃突角
度θ内において対称的に設（することが好ましく＼。Flame jets F injected from a pair of burners 6△ and 6B, respectively
A convection ratio of A, FB (1:1) is suitable for facilitating combustion control; :
It has been learned from experience that this is possible as long as the value does not exceed 0.42. Experience shows that the flow rate exceeds 1:0.42.
Adopting the ratio is not preferable because the effect of jet collision is reduced and it is the same as eliminating collision.In addition, the flow rate ratio of flame jets "△, FB" of burner 6A and burner 6B, that is, the ratio of combustion... If the ratio is other than 1:1, which burner's combustion ff
1 is not an important issue in terms of the effect on flame formation as long as it is within the range of the flow m ratio mentioned above, but has a big impact. In other words, combustion m of burners 6△ and 6B
By controlling the ratio, that is, the flame jet flow m ratio, the injection direction of the composite flame C can be controlled without changing the settings such as the burner mounting angle. When items with different values are brought in,
Burner 6A and 613 are left as they are installed and burned □
By simply changing The facing state is preferably set symmetrically within the predetermined '9# salient angle θ of 1) E.
しかし、このことは、バーナ６Ａ、６Ｂを非対称的に取
付けることを否定するものではない。However, this does not preclude an asymmetrical mounting of the burners 6A, 6B.
尚、本実施例ではスラブをパン１式に均熱づる均熱炉を
例に１ニげＩ、：が、スラブ以外の被加熱物を対象とし
たり、連続均熱炉に応用できることは言うまでもない。In this embodiment, a soaking furnace in which a slab is soaked in one set of pans is used as an example, but it goes without saying that it can be applied to objects to be heated other than slabs or to a continuous soaking furnace. .
例えば、本実施例では被加熱物３どしてスラブを想定し
ているため、第１図の如く一組のバーナ６Ａ、６Ｂを上
下に対向配置させて横に数対並べ、横方向に平たい薄膜
状火炎を形成するようにしているが、高さのある大形イ
ンゴット等の場合には、縦方向に平たい膜状火炎を併「
て形成づることも均熱時間を短縮さｔ！るには効果的で
ある。そこで、バーナ６Ａ、６Ｂを鉛直軸を対称軸とし
てＨ６に対向ｆｉｔ！置して、鉛直方向に広がる膜状火
炎を形成させる。For example, in this embodiment, since the object to be heated 3 is assumed to be a slab, a set of burners 6A and 6B are arranged vertically facing each other and arranged in pairs horizontally, as shown in FIG. We try to form a thin film flame, but in the case of tall large ingots, we also create a flat film flame in the vertical direction.
Also, forming the product using the same method will shorten the soaking time! It is effective for Therefore, burners 6A and 6B are fitted facing H6 with the vertical axis as the axis of symmetry! to form a film-like flame that spreads vertically.
以上のように構成された灼熱炉にあっては、炉内に噴射
された直後の勢いある火炎ＦＡ、ＦＢ同士を衝突さける
ため、＠突によって火炎噴流が互いに押し拡げられて扇
状の薄くて広い膜状火炎「０となる。しかも、隣るバー
ナ群によって形成される池の膜状火炎「Ｃと合流して被
加熱物３を斑なく密に包囲する。そして、この平たい膜
状火炎ＦＣは炉内壁に沿って対流し、炉内壁下部の排ガ
スポート５からυ１出される間に被ｈＩ′ｌ熱物３を完
全に包囲して斑なく加熱する。合成火炎は、甲ｔ＝ｂｓ
膜状のため、湿度分布が一様であると共に、被加熱物３
に対【）で直接触れることがない程度にづ“れすれに接
近できるので、被加熱物３を高温度でかつ斑なく加熱で
きる。依って、均熱時間を大幅に短縮できる。In the scorching furnace configured as described above, in order to avoid collision between the powerful flames FA and FB immediately after being injected into the furnace, the flame jets are pushed apart by the collision and spread out into a thin and wide fan-shaped flame jet. The film flame becomes 0.Moreover, it merges with the pond film flame C formed by the adjacent burner group and densely surrounds the object to be heated 3.Then, this flat film flame FC Convection flows along the furnace inner wall, and while υ1 is discharged from the exhaust gas port 5 at the bottom of the furnace inner wall, it completely surrounds the heated material 3 and heats it uniformly.The synthetic flame is
Because it is film-like, the humidity distribution is uniform and the object to be heated 3
Since the object 3 can be closely approached without touching directly, the object 3 to be heated can be heated evenly at a high temperature.Therefore, the soaking time can be significantly shortened.
また、高さや大きさの異なる被加熱物３が搬入された場
合には、それに合せてバーナ６Ａ、６Ｂの燃焼■１比を
調整することにより合成火炎の噴射方向を制御して被加
熱物の直接触れることがな（為すれすれの近くに一目ホ
の火炎を流れさドる。In addition, when objects 3 to be heated with different heights and sizes are brought in, the injection direction of the synthetic flame is controlled by adjusting the combustion ratio of burners 6A and 6B accordingly. Do not touch it directly (if you do, a flash of flame will flow near you).
また、高さのある被加熱物３を〜個あるいは複数個同時
に均熱する場合には、イれらの間若しくは被加熱物３の
両側壁に沿って平たい膜状火炎を流すことによって、均
熱時間を大幅に短縮できる。In addition, when uniformly heating ~ or a plurality of tall objects 3 to be heated, it is possible to uniformly heat them by flowing a flat film flame between them or along both side walls of the objects 3 to be heated. Heating time can be significantly shortened.
勿論、このときには横り向に対向設置したバーナ群を使
用する。Of course, in this case, burner groups installed horizontally opposite each other are used.
■０発明の効果
以上の説明から明らかなＪ、うに、本発明の均熱炉は、
二基のバーナをその火炎噴流軸が炉内において交差すべ
く向い合せてか壁に少なくとも−・対設置し、炉内に噴
射された直後の勢いある火炎同士を衝突させるので、火
炎噴流がｎいに押し拡げられて扇状の平た（広い膜状火
炎となって被加熱物を斑なく迅速に加熱する。即ち、本
発明によれば合成火炎は平たい膜状のため、温度分布が
一様であると共に被加熱物に対して直接触れることがな
くかつすれすれに接近できるので、被加熱物を高温度で
斑なく加熱でき、均熱時間を大幅に短縮できる。■0 Effects of the invention It is clear from the above explanation that the soaking furnace of the present invention has the following effects:
Two burners are installed facing each other or at least on the wall so that their flame jet axes intersect in the furnace, and the powerful flames immediately after being injected into the furnace collide with each other, so that the flame jet is n The composite flame is spread out to form a fan-shaped flat (wide film-like flame), which quickly heats the object to be heated without unevenness.In other words, according to the present invention, since the synthetic flame is flat and film-like, the temperature distribution is uniform. In addition, since the object to be heated can be approached in a close manner without touching it directly, the object to be heated can be heated uniformly at a high temperature, and the soaking time can be significantly shortened.
４、図面のｌ！ｔ１１ｉＩなぴ２間
第１図は本発明の均熱炉の一実施例を示す斜視図、第２
図は同均熱炉のバーナの取付状態を示す側面図、第３図
はその正面図である。第４図は火炎噴流同士の衝突と火
炎の膜状化との関係を衝突角１１の違いによって再現す
る水流モデルの流れ場の図面であって、（１）は衝突角
度２０°の状態、（２）は衝突角Ｉｆｆ ４０ ’の状
態、（３）は衝突角度１００°の状態、（４）は衝突角
度１７８°の状態を示すものであって、夫々において（
ａ ）はｔｉ突正正面図（ｂ）は同衝突をやや側面から
見た図である。4.L of the drawing! Figure 1 is a perspective view showing one embodiment of the soaking furnace of the present invention;
The figure is a side view showing how the burners of the soaking furnace are installed, and FIG. 3 is a front view thereof. FIG. 4 is a drawing of the flow field of a water flow model that reproduces the relationship between collisions between flame jets and film formation of flames by varying the collision angle 11. (1) shows the state where the collision angle is 20°, 2) shows a state where the collision angle Iff is 40', (3) shows a state where the collision angle is 100°, and (4) shows a state where the collision angle is 178°.
(a) is a front view of the ti collision; (b) is a view of the same collision seen from a slightly side view.
１・・・炉本体（耐火物）、 ２・・・燃焼室内（炉内
）３・・・被加熱物、 ５・・・排ガス、６Ａ、６Ｂ・
・・燃焼器を構成する一対のバーナ、ＯＡ、Ｏ８・・・
火炎噴流軸、
ＦＡ、ＦＢ・・・噴射直後の火炎、
ＦＣ・・・合成火炎、 θ・・・衝突角度。1...Furnace body (refractory), 2...Inside combustion chamber (furnace) 3...Object to be heated, 5...Exhaust gas, 6A, 6B.
...A pair of burners, OA, O8 that make up the combustor...
Flame jet axis, FA, FB...Flame immediately after injection, FC...Synthetic flame, θ...Collision angle.
第４図 （０） （ａ） −りり【 （ｂ） （ｂ） 第４ （０） （ａン 特開昭ＧＯ−１５２６３Ｇ（６） 図 （ｂン （ｂ） １°ノ 酊φ；、’、；に、ｄFigure 4 (0) (a) −Riri [ (b) (b) Fourth (0) (a an Tokukai Sho GO-15263G (6) figure (b-n (b) 1°ノ drunkennessφ;,’,;ni,d
Claims (3)
壁に沿って（ノターンさせ炉壁下部の排ガスポートから
排出させる間に対流伝熱により被加熱物を均一に加熱す
る均熱炉において、二基のバーナをその火炎噴流軸が炉
内において交差１べく向い合せて炉壁に少なくとも一対
設置し、炉内へ噴射された直後の火炎同士を衝突させて
膜状の合成火炎を形成することを特徴とする均熱炉。(1) In a soaking furnace where a burner is installed in the furnace wall soil, the combustion exhaust gas is heated along the furnace inner wall (not turned) and the object to be heated is uniformly heated by convection heat transfer while being discharged from the exhaust gas port at the bottom of the furnace wall. At least one pair of two burners are installed on the furnace wall so that their flame jet axes cross each other in the furnace, and the flames immediately after being injected into the furnace collide with each other to form a film-like composite flame. A soaking furnace characterized by:
突させることを特徴とする特許請求の範囲第１項記載の
均熱炉。(2) The soaking furnace according to claim 1, wherein the flames collide with each other at an intersection angle in the range of 15° to 160°.
突させることを特徴とする特許請求の範囲第１項記載の
均熱炉。(3) The soaking furnace according to claim 1, wherein the flames collide with each other at an intersection angle in the range of 40° to 110°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990184A JPS60152636A (en) | 1984-01-23 | 1984-01-23 | Soaking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990184A JPS60152636A (en) | 1984-01-23 | 1984-01-23 | Soaking furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60152636A true JPS60152636A (en) | 1985-08-10 |
| JPH0514011B2 JPH0514011B2 (en) | 1993-02-24 |
Family
ID=11733011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP990184A Granted JPS60152636A (en) | 1984-01-23 | 1984-01-23 | Soaking furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152636A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100913A (en) * | 1978-01-25 | 1979-08-09 | Kawasaki Steel Co | Evenly heating furnace |
| JPS54147739U (en) * | 1978-04-06 | 1979-10-15 | ||
| JPS5646054A (en) * | 1979-09-18 | 1981-04-27 | Taku Yamada | Method of distributing bar in central area of wall thickness |
| JPS56169131U (en) * | 1980-05-15 | 1981-12-14 | ||
| JPS5714931A (en) * | 1980-06-30 | 1982-01-26 | Mitsubishi Electric Corp | Interruption controlling system |
-
1984
- 1984-01-23 JP JP990184A patent/JPS60152636A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100913A (en) * | 1978-01-25 | 1979-08-09 | Kawasaki Steel Co | Evenly heating furnace |
| JPS54147739U (en) * | 1978-04-06 | 1979-10-15 | ||
| JPS5646054A (en) * | 1979-09-18 | 1981-04-27 | Taku Yamada | Method of distributing bar in central area of wall thickness |
| JPS56169131U (en) * | 1980-05-15 | 1981-12-14 | ||
| JPS5714931A (en) * | 1980-06-30 | 1982-01-26 | Mitsubishi Electric Corp | Interruption controlling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514011B2 (en) | 1993-02-24 |
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