JPH0251090B2 - - Google Patents
Info
- Publication number
- JPH0251090B2 JPH0251090B2 JP59103243A JP10324384A JPH0251090B2 JP H0251090 B2 JPH0251090 B2 JP H0251090B2 JP 59103243 A JP59103243 A JP 59103243A JP 10324384 A JP10324384 A JP 10324384A JP H0251090 B2 JPH0251090 B2 JP H0251090B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel gas
- ignition
- combustion air
- supply path
- burner
- 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 - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 claims description 34
- 239000002737 fuel gas Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/22—Timing network
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/02—Air or combustion gas valves or dampers
- F23N2235/06—Air or combustion gas valves or dampers at the air intake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Description
【発明の詳細な説明】
本発明は、先混合式バーナにおける点火方法、
詳しくは、バーナ燃焼部へ、燃料ガス供給路およ
び燃焼用空気供給路を介して、燃料ガスと燃焼用
空気とを各別に供給するように構成してある先混
合式バーナにおける点火方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an ignition method in a premix burner;
Specifically, the present invention relates to an ignition method in a premix burner configured to separately supply fuel gas and combustion air to a burner combustion section via a fuel gas supply path and a combustion air supply path.
かかる先混合式のバーナは、燃焼用空気が予混
合された燃料ガスを燃焼部へ供給する元混合式の
バーナに比べて、逆火現象が生じないという基本
的利点を有しているが、起動直後における燃料ガ
スと燃焼用空気との混合性に難があるため点火性
能に劣る、という欠点がある。 Such pre-mixing burners have the fundamental advantage that flashback does not occur, compared to pre-mixing burners that supply fuel gas premixed with combustion air to the combustion section. The drawback is that the ignition performance is poor due to difficulty in mixing the fuel gas and combustion air immediately after startup.
本発明は、上記実情に鑑みてなされたものであ
つて、その目的は、先混合式バーナの点火性能の
改善を図る方法を提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a method for improving the ignition performance of a premix burner.
かかる目的を達成するために、本発明による先
混合式バーナにおける点火方法は、点火時にのみ
前記燃料ガス供給路または燃焼用空気供給路の何
れか一方へ燃料ガスと燃焼用空気の予混合気を導
入する、という手段を採用した点に特徴がある。 In order to achieve this object, the ignition method for the premix burner according to the present invention supplies a premixture of fuel gas and combustion air to either the fuel gas supply path or the combustion air supply path only at the time of ignition. It is distinctive in that it adopted the method of introducing
上記特徴構成故に発揮される作用ならびに効果
は次の通りである。 The functions and effects exhibited by the above characteristic configuration are as follows.
即ち、前述したように、先混合式バーナでは、
一般に、起動直後において（つまり定常燃焼状態
に達するまでの間）燃料ガスと燃焼用空気との混
合が十分に行なわれ難いため、点火の際の着火が
不安定であるという難点を有するのであるが、本
発明のものにおいては、点火時には燃料ガスと燃
焼用空気とを予め混合させた混合気を燃焼部へ供
給するようにしたので、バーナ起動時において、
その混合気と燃焼用空気供給路からの燃焼用空気
または燃料ガス供給路からの燃料ガスとの混合が
多少不十分であつても、もともと燃焼用空気を含
んだ燃料ガスが供給されているので、着火ミスの
無い良好な点火が行なわれ、もつて、先混合式バ
ーナでありながら極めて点火性能の良いものを得
られるに至つたのである。 That is, as mentioned above, in the pre-mixing burner,
In general, it is difficult to mix the fuel gas and combustion air immediately after startup (that is, until a steady state of combustion is reached), resulting in unstable ignition. In the present invention, a mixture of fuel gas and combustion air is supplied to the combustion section at the time of ignition, so that when the burner is started,
Even if the mixture is somewhat insufficiently mixed with the combustion air from the combustion air supply path or the fuel gas from the fuel gas supply path, the fuel gas that originally contains combustion air is being supplied. Good ignition was achieved without any ignition errors, and it was eventually possible to obtain a pre-mixed burner with extremely good ignition performance.
以下、本発明方法を適用した先混合式バーナの
実施例を図面に基いて説明する。 Hereinafter, embodiments of a pre-mixing burner to which the method of the present invention is applied will be described with reference to the drawings.
図において、１は例えばベル型焼鈍炉等の炉壁
であつて、炉内に対し接線方向から炉壁１に固設
されたバーナタイル部分２と、そのバーナタイル
部分２の基端側に連設された先混合式バーナ本体
部分３とから成るガスバーナ４を構成してある。 In the figure, 1 is a furnace wall of a bell-shaped annealing furnace, for example, and includes a burner tile portion 2 fixed to the furnace wall 1 from a tangential direction with respect to the inside of the furnace, and a burner tile portion 2 connected to the base end side of the burner tile portion 2. A gas burner 4 is constituted by a premix burner main body portion 3 provided therein.
前記バーナ本体部分３は、前記炉壁１およびバ
ーナタイル部分２に適合する筒状カツプリング部
材５と、そのカツプリング部材５に連設された空
気導入孔６付きの外筒７とで燃焼用空気供給路８
を形成すると共に、その空気供給路８の軸芯部
に、基端側に燃料ガス導入孔９を有し、かつ、先
端部にノズル１０を備えた燃料ガス供給路１１を
挿設し、更に、その燃料ガス供給路１１内に点火
用スパークロツド１２を挿設してある。 The burner main body portion 3 is configured to supply combustion air with a cylindrical coupling member 5 that fits the furnace wall 1 and the burner tile portion 2, and an outer cylinder 7 with an air introduction hole 6 connected to the coupling member 5. Road 8
At the same time, a fuel gas supply channel 11 having a fuel gas introduction hole 9 at the base end side and a nozzle 10 at the tip end is inserted into the axial center of the air supply channel 8, and further An ignition spark rod 12 is inserted into the fuel gas supply path 11.
図中、１３は炎監視用覗き窓である。 In the figure, 13 is a viewing window for flame monitoring.
そして、前記バーナ本体部分３への燃料ガスお
よび燃焼用空気の供給制御系は次のように構成さ
れている。 A control system for supplying fuel gas and combustion air to the burner main body portion 3 is configured as follows.
即ち、前記燃料ガス供給路１１へのガス導入路
１７途中に電磁式流量調節弁V1を介装すると共
に、前記燃焼用空気供給路８への空気導入路１４
途中に電磁式流量調節弁V2を介装し、かつ、前
記空気導入路１４の途中からガス導入路１３の途
中に亘つて電磁式流量調節弁V3付きの空気分岐
導入路１５を設け、そして、燃焼制御装置Ｃによ
つて前記点火用スパークロツド１２および前記電
磁式流量調節弁V1，V2，V3に対する自動制御を
行なうように構成してある。即ち、前記燃焼制御
装置Ｃは、それに対して点火指令操作が行なわれ
ると、前記スパークロツド１２に通電して点火作
用を行なわせると共に、前記３個の電磁式流量調
節弁V1，V2，V3を夫々所定の開度に開動させ
て、前記燃料ガス供給路１１内へ、ある程度（理
論空気量の50％位）の燃焼用空気が予混合された
燃料ガスを導入し、かつ、前記燃焼用空気供給路
８内へ残りの必要な量（この場合理論空気量の50
％位）の燃焼用空気を導入し、そして、前記点火
指令操作がなされてから所定時間（点火が完了す
るのに十分な時間に設定される）が経過したとき
に、前記スパークロツド１２への通電を停止させ
ると共に、前記空気分岐導入路１５の弁V3を閉
動させ、かつ、前記空気導入路１４の弁V2を理
論空気量を通過させ得る開度まで開動させ、もつ
て、前記燃料ガス供給路１１内へは100％の燃料
ガスを、そして、前記燃焼用空気供給路８内へは
理論空気量の燃焼用空気を導入し、燃焼部１６に
おいて先混合燃焼させるのである。 That is, an electromagnetic flow control valve V 1 is interposed in the middle of the gas introduction path 17 to the fuel gas supply path 11, and an air introduction path 14 to the combustion air supply path 8 is provided.
An electromagnetic flow control valve V 2 is interposed in the middle, and an air branch introduction path 15 with an electromagnetic flow control valve V 3 is provided from the middle of the air introduction path 14 to the middle of the gas introduction path 13. The combustion control device C automatically controls the ignition spark rod 12 and the electromagnetic flow control valves V 1 , V 2 , and V 3 . That is, when an ignition command operation is performed on the combustion control device C, the combustion control device C energizes the spark rod 12 to perform an ignition action, and also controls the three electromagnetic flow control valves V 1 , V 2 , V 3 to a predetermined opening degree to introduce fuel gas premixed with a certain amount of combustion air (approximately 50% of the theoretical air amount) into the fuel gas supply path 11, and The remaining required amount into the air supply path 8 (in this case, 50% of the theoretical air amount)
%) of combustion air is introduced, and when a predetermined time (set to a time sufficient to complete ignition) has elapsed since the ignition command operation was performed, the spark rod 12 is energized. At the same time, the valve V 3 of the air branch introduction path 15 is closed, and the valve V 2 of the air introduction path 14 is opened to an opening that allows the theoretical amount of air to pass through, and then the fuel 100% fuel gas is introduced into the gas supply path 11, and a theoretical amount of combustion air is introduced into the combustion air supply path 8, which are premixed and combusted in the combustion section 16.
なお、上記実施例では、点火時に、燃料ガス供
給路１１側へ予混合気を導入するようにしたもの
を示したが、燃焼用空気供給路８側へ予混合気を
導入するように構成してもよい。 In addition, in the above embodiment, the premixture is introduced into the fuel gas supply path 11 side at the time of ignition, but the premixture is configured to be introduced into the combustion air supply path 8 side. It's okay.
また、点火時の予混合気の導入終了は、フレー
ムロツド等により着火を確認した時点、あるい
は、その時点から一定時間経過した時点で行なわ
せるようにしてもよい。 Further, the introduction of the premixture at the time of ignition may be terminated at the time when ignition is confirmed by flame rod or the like, or at the time when a certain period of time has elapsed from that time.
図面は本発明に係る点火方法を適用した先混合
式バーナの一実施例の一部断面側面図である。
８……燃焼用空気供給路、１１……燃料ガス供
給路、１６……バーナ燃焼部。
The drawing is a partially sectional side view of an embodiment of a premix burner to which the ignition method according to the present invention is applied. 8... Combustion air supply path, 11... Fuel gas supply path, 16... Burner combustion section.
Claims (1)
よび燃焼用空気供給路８を介して、燃料ガスと燃
焼用空気とを各別に供給するように構成してある
先混合式バーナにおける点火方法であつて、点火
時にのみ前記燃料ガス供給路１１または燃焼用空
気供給路８の何れか一方へ燃料ガスと燃焼用空気
の予混合気を導入することを特徴とする先混合式
バーナにおける点火方法。1 An ignition method in a premix burner configured to supply fuel gas and combustion air separately to the burner combustion section 16 via the fuel gas supply path 11 and the combustion air supply path 8. An ignition method for a premix burner, characterized in that a premixture of fuel gas and combustion air is introduced into either the fuel gas supply path 11 or the combustion air supply path 8 only at the time of ignition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103243A JPS60245922A (en) | 1984-05-21 | 1984-05-21 | Igniting method in premixing type burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103243A JPS60245922A (en) | 1984-05-21 | 1984-05-21 | Igniting method in premixing type burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60245922A JPS60245922A (en) | 1985-12-05 |
| JPH0251090B2 true JPH0251090B2 (en) | 1990-11-06 |
Family
ID=14348995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59103243A Granted JPS60245922A (en) | 1984-05-21 | 1984-05-21 | Igniting method in premixing type burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60245922A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6715624B2 (en) * | 2016-03-15 | 2020-07-01 | 大阪瓦斯株式会社 | Gas burner |
-
1984
- 1984-05-21 JP JP59103243A patent/JPS60245922A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60245922A (en) | 1985-12-05 |
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