JP3017013B2 - Radiant heating furnace - Google Patents
Radiant heating furnaceInfo
- Publication number
- JP3017013B2 JP3017013B2 JP6075745A JP7574594A JP3017013B2 JP 3017013 B2 JP3017013 B2 JP 3017013B2 JP 6075745 A JP6075745 A JP 6075745A JP 7574594 A JP7574594 A JP 7574594A JP 3017013 B2 JP3017013 B2 JP 3017013B2
- Authority
- JP
- Japan
- Prior art keywords
- radiant
- plate
- heating furnace
- furnace
- space
- 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.)
- Expired - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims description 14
- 238000005338 heat storage Methods 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 3
- 102220488234 Uromodulin-like 1_F23D_mutation Human genes 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 102220579497 Macrophage scavenger receptor types I and II_F23C_mutation Human genes 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gas Burners (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、輻射式加熱炉に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiant heating furnace.
【０００２】[0002]
【従来の技術】炉内に多数のラジアントチューブを取付
け、その輻射熱により炉内のワークを加熱する輻射式加
熱炉は広く知られている。ところがこのような輻射式加
熱炉の炉室内の長手方向の温度分布は、ラジアントチュ
ーブが設置された部分で高温となり、ラジアントチュー
ブの中間部でやや低温となることが避けられない。そこ
でワークを均一に加熱する必要がある場合には、ラジア
ントチューブを設置するピッチを小さくして多数のラジ
アントチューブを取り付けていたのであるが、設備費用
が高価となるにもかかわらず、均一加熱は困難であっ
た。また通常のラジアントチューブはバーナが取り付け
られた側の温度が高温となるため、炉幅方向にも温度分
布の不均一が生じていた。2. Description of the Related Art A radiant heating furnace in which a large number of radiant tubes are mounted in a furnace and a work in the furnace is heated by radiant heat is widely known. However, it is inevitable that the temperature distribution in the longitudinal direction in the furnace chamber of such a radiant heating furnace becomes high in a portion where the radiant tube is installed and becomes slightly low in an intermediate portion of the radiant tube. Therefore, when it was necessary to heat the work uniformly, the pitch of the radiant tubes was reduced and a large number of radiant tubes were installed. It was difficult. In addition, in the case of a normal radiant tube, the temperature on the side where the burner is attached is high, and thus the temperature distribution is uneven in the furnace width direction.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、高価な設備費用を要することなく、
炉の長手方向及び炉幅方向の温度分布を均一化すること
ができる輻射式加熱炉を提供するためになされたもので
ある。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and does not require expensive equipment costs.
It is an object of the present invention to provide a radiant heating furnace capable of making the temperature distribution in the furnace longitudinal direction and the furnace width direction uniform.
【０００４】[0004]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の輻射式加熱炉は、炉体の内面にラ
ジアントプレートを設置し、その裏側を燃焼排ガスが流
れる空間とするとともに、この空間につながる複数のバ
ーナと、バーナの燃焼排ガスから熱を回収して燃焼用空
気を予熱する蓄熱体とを設けたことを特徴とするもので
ある。なお、ラジアントプレートはSi-SiC焼結体のよう
な耐クリープ性に優れたものであることが好ましい。The radiant heating furnace according to the present invention, which has been made to solve the above-mentioned problems, has a radiant plate installed on the inner surface of a furnace body, and a back side of the radiant plate serves as a space through which combustion exhaust gas flows. And a plurality of burners connected to this space, and a heat storage element for recovering heat from the combustion exhaust gas of the burners and preheating combustion air. It is preferable that the radiant plate has excellent creep resistance, such as a sintered Si—SiC body.
【０００５】[0005]
【作用】本発明によれば、炉体の内面に設置されたラジ
アントプレートからワークに対して輻射が行われるの
で、炉体の長手方向の温度分布の不均一はほとんど解消
される。またラジアントプレートの裏側の空間につなが
るバーナと、蓄熱体とを設けたので、燃焼排ガスの保有
熱は反対側のチューブに設けられた蓄熱体に蓄えられ、
次に燃焼用空気の予熱に利用されることとなり、炉の熱
効率を高めることができる利点もある。According to the present invention, since the work is radiated from the radiant plate installed on the inner surface of the furnace body, the unevenness of the temperature distribution in the longitudinal direction of the furnace body is almost eliminated. In addition, since a burner connected to the space on the back side of the radiant plate and a heat storage body are provided, the retained heat of the combustion exhaust gas is stored in the heat storage body provided in the tube on the opposite side,
Next, it is used for preheating combustion air, and there is also an advantage that the thermal efficiency of the furnace can be increased.
【０００６】[0006]
【実施例】以下に本発明を図示のローラハースキルンの
実施例によって更に詳細に説明する。 〔第１の実施例〕図１において、１は炉体、２はその内
部の炉室、３はワークを搬送するためのセラミックロー
ラである。４はこの炉室２に面して炉体１の長手方向に
連続させて設けられたラジアントプレートである。本実
施例ではラジアントプレート４は天井面と底面とに設け
られているが、ワークの種類や特性に合わせ天井面又は
底面の一方のみ、さらに両側面に設けてもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in further detail with reference to the illustrated roller hearth kiln embodiment. [First Embodiment] In FIG. 1, reference numeral 1 denotes a furnace body, 2 denotes a furnace chamber in the furnace body, and 3 denotes a ceramic roller for transporting a work. Reference numeral 4 denotes a radiant plate provided facing the furnace chamber 2 so as to be continuous in the longitudinal direction of the furnace body 1. In the present embodiment, the radiant plate 4 is provided on the ceiling surface and the bottom surface, but may be provided on only one of the ceiling surface or the bottom surface and further on both side surfaces according to the type and characteristics of the work.
【０００７】このラジアントプレート４としては、耐熱
性、輻射率、熱伝導率等に優れたセラミックプレートを
使用することが好ましく、本実施例では特に耐クリープ
性に優れたSi-SiC焼結体が使用されている。Si-SiC焼結
体はSiC と25重量％以下のSiとからなるもので、Si粉末
とC 粉末をSiC 粉末とともに混合して成形し、1300〜14
00℃で焼結させる方法によって製造することができる。
なおカーボンシートやカーボンファイバにより成形体を
作成し、Siと反応させてSi-SiC焼結体を得ることもでき
る。さらにこのほか、再結晶炭化珪素にSiを含浸させる
方法によっても製造することができる。Si-SiC焼結体に
ついては、本出願人の特開平6-1660号公報に詳細が開示
されている。As the radiant plate 4, it is preferable to use a ceramic plate having excellent heat resistance, emissivity, thermal conductivity and the like. In this embodiment, a Si-SiC sintered body having particularly excellent creep resistance is used. It is used. The Si-SiC sintered body is composed of SiC and 25% by weight or less of Si. The Si powder and the C powder are mixed together with the SiC powder and molded.
It can be manufactured by a method of sintering at 00 ° C.
It is to be noted that a molded body may be prepared from a carbon sheet or carbon fiber and reacted with Si to obtain a Si-SiC sintered body. In addition, it can also be produced by a method of impregnating recrystallized silicon carbide with Si. Details of the Si-SiC sintered body are disclosed in Japanese Patent Application Laid-Open No. 6-1660 of the present applicant.
【０００８】ラジアントプレート４は図１では平板状で
あるが、伝熱面積を増加させるとともに燃焼ガスのレイ
ノルズ数を高めるため、燃焼ガスと接触する裏面側に凹
凸状のフィンを設けること、ワークに面する表面側の伝
熱面積を増加させるため表面側に凹凸を設けること、あ
るいは波板状として表裏両面の面積を増加させること等
の工夫をすることにより、熱効率をいっそう向上させる
ことができる。なお、ラジアントプレート４の表面に輻
射率を高めるためのコーティングを施せば、更に好まし
い。The radiant plate 4 is flat in FIG. 1. However, in order to increase the heat transfer area and increase the Reynolds number of the combustion gas, it is necessary to provide uneven fins on the back side in contact with the combustion gas. The thermal efficiency can be further improved by providing irregularities on the front surface side in order to increase the heat transfer area on the front surface side facing, or by increasing the area of both front and back surfaces as a corrugated plate. It is more preferable that the surface of the radiant plate 4 be coated with a coating for increasing the emissivity.
【０００９】さて炉体１のラジアントプレート４の裏側
の部分には、炉体１の長手方向に連続する空間５が形成
されている。そしてこの空間５の両側には、対をなすチ
ューブ６、６が多数取付けられている。各チューブ６は
炉体１の長手方向に所定の間隔で配置することが好まし
い。各チューブ６、６の先端部には、バーナ７と蓄熱体
８とがそれぞれ設けられている。蓄熱体８はムライト、
コージライト、SiC 等の低熱膨脹のセラミックハニカム
構造体からなるものであることが好ましい。バーナ７は
図示しないバーナ切替え装置により、交互に（実施例の
場合は左右が交互に）燃焼するよう制御されている。バ
ーナノズルの先端は蓄熱体８を貫通してチューブ６内に
延びている。各チューブ６、６の蓄熱体８よりも更に先
端側の部分は図示しない空気切替え装置に接続されてお
り、バーナ切替え装置と連動し、対をなすチューブ６、
６を交互に燃焼用空気供給源と排気口とに連通させてい
る。A space 5 which is continuous in the longitudinal direction of the furnace body 1 is formed in a portion of the furnace body 1 behind the radiant plate 4. On both sides of this space 5, a large number of pairs of tubes 6, 6 are mounted. The tubes 6 are preferably arranged at predetermined intervals in the longitudinal direction of the furnace body 1. A burner 7 and a heat storage body 8 are provided at the distal ends of the tubes 6, 6, respectively. The heat storage body 8 is mullite,
It is preferably made of a ceramic honeycomb structure having a low thermal expansion such as cordierite or SiC. The burners 7 are controlled by a burner switching device (not shown) so that they burn alternately (alternately, left and right in the case of the embodiment). The tip of the burner nozzle extends through the heat storage body 8 and into the tube 6. A portion of each of the tubes 6, 6 further on the tip side than the heat storage body 8 is connected to an air switching device (not shown), and is linked with the burner switching device to form a pair of tubes 6, 6.
6 alternately communicate with the combustion air supply source and the exhaust port.
【００１０】このように構成された輻射式加熱炉の運転
方法は次の通りである。まず対をなすチューブ６、６の
一方から燃焼用空気を供給しつつバーナ７を燃焼させ
る。これにより発生した高温の燃焼排ガスはチューブ６
を通過して空間５の内部に入り、ラジアントプレート４
を加熱する。加熱されたラジアントプレート４は輻射に
より炉室２内のワークを加熱する。燃焼排ガスは更に反
対側のチューブ６を通って排気されるが、そのとき蓄熱
体８を通過するので蓄熱体８が加熱され、燃焼排ガスの
保有熱が蓄熱体８に与えられる。[0010] The operation method of the radiant heating furnace thus configured is as follows. First, the burner 7 is burned while supplying combustion air from one of the tubes 6 forming a pair. The high-temperature flue gas generated by this is supplied to the tube 6
Through the space 5 and into the radiant plate 4
Heat. The heated radiant plate 4 heats the work in the furnace chamber 2 by radiation. The flue gas is further exhausted through the tube 6 on the opposite side. At this time, the regenerator 8 is heated because it passes through the regenerator 8, and the retained heat of the flue gas is given to the regenerator 8.
【００１１】次に空気切替え装置とバーナ切替え装置と
が作動し、それまで燃焼していた側とは反対側のバーナ
７が燃焼する。これと同時に反対側のチューブ６から燃
焼用空気が供給されるが、この燃焼用空気はそれまで加
熱されていた蓄熱体８を通過するので蓄熱体８によって
予熱され、燃焼排ガスの保有熱が燃焼用空気の予熱に有
効利用されたこととなる。このとき、燃焼排ガスは空間
５の内部に入ってラジアントプレート４を加熱し、反対
側の蓄熱体８を加熱したうえで排気される。このような
切り換えは20〜30秒という短いサイクルで繰り返され、
高い熱効率を達成することができる。Next, the air switching device and the burner switching device are operated, and the burner 7 on the side opposite to the side where combustion has been performed up to that time is burned. At the same time, combustion air is supplied from the tube 6 on the opposite side. However, this combustion air passes through the heat storage body 8 which has been heated up to that time, and is thus preheated by the heat storage body 8, and the retained heat of the combustion exhaust gas is burned. This means that it was effectively used for preheating the working air. At this time, the combustion exhaust gas enters the interior of the space 5 and heats the radiant plate 4, heats the heat storage body 8 on the opposite side, and is exhausted. Such switching is repeated in a short cycle of 20 to 30 seconds,
High thermal efficiency can be achieved.
【００１２】このように、ラジアントプレート４はその
裏面の空間５に所定の間隔で設けられた多数対のチュー
ブ６、６からの燃焼排ガスによって加熱され、ラジアン
トプレート４からの輻射によってワークが加熱される。
ラジアントプレート４は炉体１の長手方向に連続して設
けられているため、この方向の温度分布はほぼ均一とな
り、ワークは均等に加熱される。また対をなすチューブ
６、６から交互に燃焼排ガスが空間５に供給されるの
で、炉幅方向の温度分布もほぼ均一とすることができ
る。As described above, the radiant plate 4 is heated by the combustion exhaust gas from the many pairs of tubes 6 provided in the space 5 on the back surface thereof at predetermined intervals, and the work is heated by the radiation from the radiant plate 4. You.
Since the radiant plate 4 is provided continuously in the longitudinal direction of the furnace body 1, the temperature distribution in this direction becomes substantially uniform, and the work is heated evenly. Further, since the flue gas is alternately supplied to the space 5 from the pair of tubes 6, 6, the temperature distribution in the furnace width direction can be made substantially uniform.
【００１３】〔第２の実施例〕上記の第１の実施例で
は、空間５の両側に対向させてバーナ７と蓄熱体８を設
けたが、図２に示す第２の実施例ではラジアントプレー
ト４の裏側の空間５を隔壁板９によってＵ字状に区画
し、Ｕ字部の両端に繋がるチューブ６にそれぞれバーナ
７と蓄熱体８を設けてある。図２ではＵ字状の区画の向
きは互い違いとされているが、全て同一の向きとしても
よい。[Second Embodiment] In the first embodiment described above, the burner 7 and the heat storage body 8 are provided so as to face both sides of the space 5, but in the second embodiment shown in FIG. The space 5 on the rear side of the U-shaped part 4 is divided into a U-shape by a partition plate 9, and a tube 6 connected to both ends of the U-shaped part is provided with a burner 7 and a heat storage body 8, respectively. In FIG. 2, the directions of the U-shaped sections are staggered, but they may all be the same.
【００１４】この実施例ではバーナ７の燃焼ガスは隔壁
板９によってＵ字状に区画された空間５の内部に入り、
ラジアントプレート４を加熱する。その後、燃焼ガスは
蓄熱体８を介して排出され、次に反対側のバーナ７が燃
焼する際に蓄熱体８が燃焼用空気を予熱する。このよう
に第２の実施例においても燃焼ガスはラジアントプレー
ト４の裏側の空間５を流れながらラジアントプレート４
を加熱するので、直接ラジアントチューブを配置した場
合よりも均一加熱が可能である。なお、図２の状態より
も隔壁板９の設置間隔を拡げることにより、炉の長さ当
りのバーナ７の設置数を減少させることもできる。In this embodiment, the combustion gas from the burner 7 enters the space 5 defined by the partition plate 9 in a U-shape.
The radiant plate 4 is heated. Thereafter, the combustion gas is exhausted through the heat accumulator 8, and the heat accumulator 8 preheats the combustion air when the next burner 7 burns. As described above, also in the second embodiment, the combustion gas flows through the space 5 behind the radiant plate 4 while the radiant plate 4
Is heated, so that uniform heating is possible as compared with the case where a radiant tube is directly arranged. It should be noted that the number of burners 7 installed per furnace length can be reduced by increasing the installation interval of the partition plates 9 from the state shown in FIG.
【００１５】[0015]
【発明の効果】以上に詳細に説明したように、本発明の
輻射式加熱炉によれば、炉の長手方向及び炉幅方向の温
度分布を均一化することができ、しかもチューブの設置
間隔を従来よりも大きくしても炉の長手方向の温度分布
が乱れないから、設備費用を低減することができる利点
がある。As described above in detail, according to the radiant heating furnace of the present invention, the temperature distribution in the longitudinal direction and the furnace width direction of the furnace can be made uniform, and the installation interval of the tubes can be reduced. Even if it is larger than before, the temperature distribution in the longitudinal direction of the furnace is not disturbed, so that there is an advantage that the equipment cost can be reduced.
【図１】本発明の第１の実施例を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図２】本発明の第２の実施例を示す平面図である。FIG. 2 is a plan view showing a second embodiment of the present invention.
１ 炉体、２ 炉室、３ セラミックローラ、４ ラジ
アントプレート、５空間、６ チューブ、７ バーナ、
８ 蓄熱体、９ 隔壁板1 furnace body, 2 furnace room, 3 ceramic rollers, 4 radiant plates, 5 spaces, 6 tubes, 7 burners,
8 heat storage, 9 partition plate
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F23D 14/12 F23C 3/00 F23D 14/66 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) F23D 14/12 F23C 3/00 F23D 14/66
Claims (5)
し、その裏側を燃焼排ガスが流れる空間とするととも
に、この空間につながる複数のバーナと、バーナの燃焼
排ガスから熱を回収して燃焼用空気を予熱する蓄熱体と
を設けたことを特徴とする輻射式加熱炉。1. A radiant plate is installed on the inner surface of a furnace body, and a space behind the radiant plate is defined as a space through which flue gas flows. A plurality of burners connected to the space, and heat is recovered from the flue gas of the burner to generate combustion air. A radiant heating furnace, comprising: a heat storage body for preheating the heat.
に対をなすチューブを多数取付け、各チューブにバーナ
と蓄熱体とを設けた請求項１に記載の輻射式加熱炉。2. The radiant heating furnace according to claim 1, wherein a large number of pairs of tubes are mounted on both sides of the space behind the radiant plate, and each tube is provided with a burner and a heat storage element.
板により多数のＵ字状の区画を形成し、各Ｕ字状部の端
部につながるチューブにバーナと蓄熱体とを設けた請求
項１に記載の輻射式加熱炉。3. The method according to claim 1, wherein a large number of U-shaped sections are formed by a partition plate in a space on the back side of the radiant plate, and a burner and a heat storage body are provided in a tube connected to an end of each U-shaped portion. The radiant heating furnace as described in the above.
なる請求項１〜３のいずれかに記載の輻射式加熱炉。4. The radiation heating furnace according to claim 1, wherein the radiant plate is made of ceramic.
アントプレートを使用した請求項１〜４のいずれかに記
載の輻射式加熱炉。5. The radiant heating furnace according to claim 1, wherein a radiant plate of a Si—SiC sintered body is used among the ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6075745A JP3017013B2 (en) | 1994-04-14 | 1994-04-14 | Radiant heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6075745A JP3017013B2 (en) | 1994-04-14 | 1994-04-14 | Radiant heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07280217A JPH07280217A (en) | 1995-10-27 |
| JP3017013B2 true JP3017013B2 (en) | 2000-03-06 |
Family
ID=13585125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6075745A Expired - Fee Related JP3017013B2 (en) | 1994-04-14 | 1994-04-14 | Radiant heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3017013B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871119A (en) * | 2017-03-16 | 2017-06-20 | 云南航天工业有限公司 | A kind of oil, gas dual burner with air preheating system |
-
1994
- 1994-04-14 JP JP6075745A patent/JP3017013B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07280217A (en) | 1995-10-27 |
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