JPS62178815A - Flame detector for multiburner - Google Patents
Flame detector for multiburnerInfo
- Publication number
- JPS62178815A JPS62178815A JP61017851A JP1785186A JPS62178815A JP S62178815 A JPS62178815 A JP S62178815A JP 61017851 A JP61017851 A JP 61017851A JP 1785186 A JP1785186 A JP 1785186A JP S62178815 A JPS62178815 A JP S62178815A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- current
- burners
- burner
- rod
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing 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
- F23N2229/00—Flame sensors
- F23N2229/16—Flame sensors using two or more of the same types of flame sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、フレームロッドを用いる火炎検出器に関し、
特に、多本バーナの火炎が確立しているバーナ本数を検
出することを可能とならしめる、多本バーナ用火炎検出
器に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flame detector using a flame rod,
In particular, the present invention relates to a flame detector for multiple burners that makes it possible to detect the number of burners in which flames of multiple burners are established.
火炎を検出する有効な手段の１つとして、フレームロッ
ド方式がある。この方式によれば、検出すべき火炎と接
触し得る位置に一対の電極を配置し、この電極間に所定
の例えば２００Ｖ程度の交流または直流電圧を印加する
。火炎が確立されていれば、この火炎の導電性及び整流
特性によって両電極間に整流された微弱な電流が流れる
ので、この電流を検出することによって火炎が検出でき
ることになる。One effective means for detecting flame is the flame rod method. According to this method, a pair of electrodes are placed at positions where they can come into contact with the flame to be detected, and a predetermined alternating current or direct current voltage of, for example, about 200 V is applied between the electrodes. If a flame is established, the conductivity and rectifying properties of the flame will cause a weak rectified current to flow between the electrodes, so that the flame can be detected by detecting this current.
第３図はかかる従来のフレームロッド方式による火炎検
出器を示す。この例では、５本のバーナ１ａ、１ｂ、ｌ
ａ、ｌｄ、Ｉｅ（ラインバーナ）を有するものについて
説明する。２は各バーナ１ａ〜１ｅに対するガスの供給
、遮断をする元弁、３はイグナイタ、４はフレームロッ
ド、５は火炎検出部で、電圧源６とフレームロッド４に
流れる電流を検出するフレームロッド７とを有する。８
け火炎検出部５の検出信号にもとづいて１元弁２および
イグナイタ３の動作を制御するコントローラである。FIG. 3 shows such a conventional flame rod type flame detector. In this example, five burners 1a, 1b, l
A burner having a, ld, and Ie (line burners) will be explained. Reference numeral 2 denotes a main valve for supplying and shutting off gas to each burner 1a to 1e, 3 an igniter, 4 a flame rod, 5 a flame detector, and a flame rod 7 for detecting the voltage source 6 and the current flowing through the flame rod 4. and has. 8
This is a controller that controls the operation of the one-way valve 2 and the igniter 3 based on the detection signal of the ignition flame detector 5.
次に動作について述べる。燃焼コントローラは熱要求に
従って、イグナイタ３を動作して、開いた元弁２から供
給されるバーナ１ａ〜１ｅのガスに点火する。この例の
ラインバーナでの着火は、イグナイタ３によりまず１本
のバーナ１ａへ点火した後、各バーナ１ａ→１ｂ→１Ｃ
→１ｄ→１ｅの人格りによって実行され、このラインバ
ーナの着火の確認は最初点火したバーナ１ａとは反対側
のバーナ１ｅ側に設けられるフレームロッド４により行
われていた。Next, we will discuss the operation. The combustion controller operates the igniter 3 in accordance with the heat request to ignite the gas in the burners 1a to 1e supplied from the opened main valve 2. In order to ignite the line burner in this example, the igniter 3 first ignites one burner 1a, and then each burner 1a → 1b → 1C
→1d→1e, and confirmation of ignition of the line burner was performed using a flame rod 4 provided on the side of the burner 1e opposite to the burner 1a that was initially ignited.
しかしながら、かかる従来のラインバーナでは。However, in such conventional line burners.
フレームロッド４が配設される側のバーナの火炎の有無
をもって、ラインバーナ全体の着火を判定しているため
に、フレームロッド４が配設されるバーナ１ｅ以外のバ
ーナ１ａ〜１ｄが途中で吹き消えても、火炎検出器５は
これを検出することができず、生ガスの放出という極め
て危険な事態を招くこととなった。Since the ignition of the entire line burner is determined based on the presence or absence of flame in the burner on the side where the flame rod 4 is installed, the burners 1a to 1d other than the burner 1e where the flame rod 4 is installed are blown out midway. Even if the flame went out, the flame detector 5 could not detect it, resulting in an extremely dangerous situation in which raw gas was released.
本発明はかかる事情に鑑みてなされたものであって、多
本バーナの１つのバーナの火炎によって生じる電流を検
出する第１のフレームロッドと。The present invention has been made in view of the above circumstances, and includes a first flame rod that detects the current generated by the flame of one burner of a multi-burner.
全部のバーナの火炎によって生じる電流を検出する第２
のフレームロッドとを備えて、これらの各フレームロッ
ドに生じた電流を電流検出手段により検出し、この検出
した各電流の比を演算装置により求めるように構成し、
これによりこの演算結果から各バーナの火炎が正常であ
るか否か、あるいは火炎が確立しているバーナの数を正
確に検出できるようにすることを目的とするものである
。A second detector detects the current generated by the flames of all burners.
frame rods, the current generated in each of these frame rods is detected by a current detection means, and the ratio of each of the detected currents is determined by a calculation device,
The purpose of this is to make it possible to accurately detect whether the flame of each burner is normal or not, or the number of burners in which a flame has been established, from this calculation result.
以下１本発明の実施例を図面により詳細に説明する。Ｋ
１図は本発明のフレームロッド方式の火炎検出器を示す
制御系統図であり、４ａは多本バーナの内の１本のバー
ナ１ｅの火炎によって生じる電流を検出するように、こ
のバーナ１ｅの火炎に接触して配設される短い第１のフ
レームロッド。Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. K
Fig. 1 is a control system diagram showing a flame rod type flame detector of the present invention, and 4a is a control system diagram showing the flame detector of one burner 1e of the multiple burners so as to detect the current generated by the flame of one burner 1e. a short first frame rod disposed in contact with the frame rod;
６ａはこの８ｇｌのフレームロッド４ａと多本／（−す
本体との間に交流または直流電圧を印加する第１の電圧
源、７ａはこの第１の電圧源６ａに直列に接続され、第
１の電圧源６ａの電圧の印加により第１のフレームロッ
ド４ａと多本バーナ本体との間に流れる電流の電流値の
大きさを検出する第１の電流検出手段である。6a is a first voltage source that applies an alternating current or direct current voltage between this 8gl frame rod 4a and the main body; 7a is connected in series to this first voltage source 6a; This is a first current detection means that detects the magnitude of the current value of the current flowing between the first frame rod 4a and the multi-burner body by applying the voltage of the voltage source 6a.
また、４ｂは多本バーナの全バーナ１ａ〜１ｅの火炎に
接触して電流を発生する第２のフレームロッド、６ｂは
第２の電圧源、７ｂは第２の電流検出手段、１１は、第
１の電流検出手段７ａにより検出された第１のフレーム
ロッド４ａに流れる電流と、第２の電流検出手段７ｂに
よシ検出された第２のフレームロッド４ｂに流れる電流
の比を求める演算手段であり、具体的にはマイクロコン
ピュータの演算機能によって構成されるものでもよく、
またハード的な電子回路によって構成されるものでもよ
い。また、５Ａは電圧源６ａ、６ｂ％電流検出手段７ａ
、７ｂおよび演算手段１１を有する火炎検出部、１２は
燃焼コントローラ８Ａにより開閉制御される電磁型の比
例弁である。Further, 4b is a second flame rod that comes into contact with the flames of all the burners 1a to 1e of the multi-burner to generate a current, 6b is a second voltage source, 7b is a second current detection means, and 11 is a second flame rod. calculation means for calculating the ratio of the current flowing through the first frame rod 4a detected by the first current detection means 7a and the current flowing through the second frame rod 4b detected by the second current detection means 7b; Yes, and specifically, it may be configured by the calculation function of a microcomputer.
Alternatively, it may be constructed from a hardware electronic circuit. In addition, 5A is the voltage source 6a, 6b% current detection means 7a
, 7b and a flame detection section having arithmetic means 11, 12 is an electromagnetic proportional valve whose opening and closing are controlled by a combustion controller 8A.
次に動作について説明する。Next, the operation will be explained.
まず、燃焼コントローラ８Ａは、熱要求に従って、イグ
ナイタ３を動作して元弁２．比例弁１２を開きバーナ１
ａのガスに点火を実行するとともに、比例弁１２の弁開
度を調節することで、燃焼量を制御して所望の被制御系
の設定温度を実現する。いま、第１の電流検出手段７ａ
が検出する電流を１０とし、第２の電流検出手段７ｂが
検出する電流を１２とすると、演算手段１１は ｌ ｖ
、□＝Ｋを求めて、 ｎ ＝ Ｋ／（１を求める。ここ
で、αはフレームロッドの位置の違い等に関係する補正
値である。この場合には、ｎ＝１のとき、短いフレーム
ロッド４ａの炎のみ燃焼と判定し、ｎ＝ｎｆのとき、ｎ
１本のバーナが燃焼と判定する。なお。First, the combustion controller 8A operates the igniter 3 according to the heat request, and operates the main valve 2. Open the proportional valve 12 and burner 1
By igniting the gas a and adjusting the opening degree of the proportional valve 12, the amount of combustion is controlled and a desired set temperature of the controlled system is achieved. Now, the first current detection means 7a
If the current detected by the second current detection means 7b is 10, and the current detected by the second current detection means 7b is 12, then the calculation means 11 calculates l v
, □ = K, and n = K/(1. Here, α is a correction value related to the difference in the position of the frame rod, etc. In this case, when n = 1, the short frame It is determined that only the flame of rod 4a is burning, and when n=nf, n
One burner is determined to be burning. In addition.
ｎｌ＞ｎｏ（ｎ ｏはバーナの総本数）のときは、第１
のフレームロッドの炎に異常があると判定する。When nl>no (no is the total number of burners), the first
It is determined that there is an abnormality in the flame of the flame rod.
また、本数まで求める必要のないときは、 Ｋ＞Ｋ１゜
Ｋ＜Ｋ ２のとき、一部のバーナが燃焼していない場合
か又は不完全燃焼と判定し、に２ ≦に≦に１のとき
、すべてのバーナが正常溶焼と判定する。In addition, when it is not necessary to calculate the number of burners, when K>K1゜K<K2, some burners are not burning or incomplete combustion is determined, and when 2 ≦ ≦ 1 , all burners are judged to be firing normally.
ここで各フレームロッド４ａ、４ｂが発生する電流の大
きさは、火炎のイオン化の強さで決まり。The magnitude of the current generated by each flame rod 4a, 4b is determined by the strength of ionization of the flame.
比例弁１２の弁開度に伴う燃焼量の大きさの変化に伴っ
て変化するとともに、火炎のイオン化の分布の影響を受
けるので、各フレームロッド４ａ。Each flame rod 4a changes as the amount of combustion changes with the opening degree of the proportional valve 12 and is affected by the ionization distribution of the flame.
４ｂの配設位置によっても変化する。しかし、この発明
では、上記電流の比を演算するので、かかる燃料量の大
きさの変化の影響をなくすることができる。It also changes depending on the arrangement position of 4b. However, in the present invention, since the ratio of the currents is calculated, the influence of the change in the amount of fuel can be eliminated.
第２図は本発明の他の実施例を示すものである。FIG. 2 shows another embodiment of the invention.
ここでは％ ２つの元弁２ａ 、２ｂをオン／オフ制御
することによって、各１の多本バーナ３１，３２への燃
料供給を燃焼コントローラ８Ｂにより制御するものであ
り％第１のフレームロッド４ａはバーナ３２の１つの火
炎に接触するように設けられ、Ｗｃ２のフレームロッド
４ｂはバーナ３１，３２の全部の火炎に同時に接触する
ように設けられている。Here, by controlling on/off the two main valves 2a and 2b, the combustion controller 8B controls the fuel supply to each of the multiple burners 31 and 32, and the first flame rod 4a is The flame rod 4b of Wc2 is provided so as to be in contact with one flame of the burner 32, and the flame rod 4b of Wc2 is provided so as to be in contact with all the flames of the burners 31 and 32 at the same time.
これによれば、燃焼コントローラ８Ｂが、バーナ３２で
の燃焼を行わせているとき、火炎検出器５が一方のバー
ナ３２の全部の火炎の確立を検出すれば、正常と判定し
、また、バーナ３１，３２の全部の火炎の確立を検出し
た場合にも、正常と判定するようにすることができる。According to this, when the combustion controller 8B causes the burner 32 to perform combustion, if the flame detector 5 detects the establishment of all flames in one burner 32, it is determined to be normal, and the burner 32 is determined to be normal. Even when the establishment of all flames 31 and 32 is detected, it can be determined that the flames are normal.
以上のように、本発明によれば、多本バーナの１つのバ
ーナの火炎によって生じる電流を検出する第１のフレー
ムロッドと、全部のバーナの火炎によって生じる電流を
検出する第２のフレームロッドとを備えて、これらの各
フレームロッドに生じた電流を電流検出手段により検出
し、この検出した各電流の比を演算装置により求めるよ
うに構成したので、その演算結果に従って、各バーナの
火炎が正常であるか否かあるいは火炎が確立しているバ
ーナの数を確実かつ容易に判定できるものが得られる効
果がある。As described above, according to the present invention, the first flame rod detects the current generated by the flame of one burner of a multi-burner, and the second flame rod detects the current generated by the flames of all the burners. The current generated in each of these flame rods is detected by the current detection means, and the ratio of the detected currents is determined by the calculation device. According to the calculation result, the flame of each burner is determined to be normal. This has the effect of making it possible to reliably and easily determine whether or not the flame is established or the number of burners in which a flame has been established.
第１図は本発明の多本バーナ用火炎検出器の一実施例を
示す制御系統図、第２図は他の実施例の制御系統図、第
３図は従来の制御系統図である。
１ａ、１ｂ、１ｃ、１ｄ、Ｉｅはバーナ、４ａは第１の
フレームロッド、４ｂは第２のフレームロッド、５Ａ、
５Ｂは火炎検出器、７ａは第１の電流検出手段、７ｂは
第２の電流検出手段、１１は演算手段、１２は比例弁。
なお、図中、同一符号は同一、または相当部分を示す。FIG. 1 is a control system diagram showing one embodiment of the flame detector for multiple burners of the present invention, FIG. 2 is a control system diagram of another embodiment, and FIG. 3 is a conventional control system diagram. 1a, 1b, 1c, 1d, Ie are burners, 4a is a first frame rod, 4b is a second frame rod, 5A,
5B is a flame detector, 7a is a first current detection means, 7b is a second current detection means, 11 is a calculation means, and 12 is a proportional valve. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
れる電流を検出することにより、火炎の確立を検出する
多本バーナ用火炎検出器において、多本バーナの１つの
バーナの火炎にのみ接触しうる第１のフレームロッドと
、全部のバーナの火炎に同時に接触しうる第２のフレー
ムロッドと、上記第１のフレームロッドに流れる電流を
検出する第１の電流検出手段と、上記第２のフレームロ
ッドに流れる電流を検出する第２の電流検出手段と、上
記２つの電流検出手段で検出した各電流の比を演算する
演算手段とを備えたことを特徴とする多本バーナ用火炎
検出器。In a multi-burner flame detector that detects the establishment of a flame by detecting the current flowing through a flame rod that contacts the flame of the multi-burner, a first flame detector that can contact only the flame of one burner of the multi-burner a second flame rod capable of simultaneously contacting the flames of all the burners; a first current detection means for detecting the current flowing through the first flame rod; A flame detector for a multiple burner, comprising: second current detection means for detecting current; and calculation means for calculating the ratio of the respective currents detected by the two current detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61017851A JPS62178815A (en) | 1986-01-31 | 1986-01-31 | Flame detector for multiburner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61017851A JPS62178815A (en) | 1986-01-31 | 1986-01-31 | Flame detector for multiburner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62178815A true JPS62178815A (en) | 1987-08-05 |
Family
ID=11955162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61017851A Pending JPS62178815A (en) | 1986-01-31 | 1986-01-31 | Flame detector for multiburner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62178815A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62255728A (en) * | 1986-04-25 | 1987-11-07 | Matsushita Electric Ind Co Ltd | Burner |
| EP2542835A1 (en) * | 2010-03-03 | 2013-01-09 | Bromic Heating Pty Limited | Wind resistant heater |
| EP3617596A1 (en) * | 2018-08-28 | 2020-03-04 | Honeywell International Inc. | Method for operating a gas burner appliance |
| US11384935B2 (en) * | 2018-09-25 | 2022-07-12 | Noritz Corporation | Combustion apparatus and hot water apparatus |
-
1986
- 1986-01-31 JP JP61017851A patent/JPS62178815A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62255728A (en) * | 1986-04-25 | 1987-11-07 | Matsushita Electric Ind Co Ltd | Burner |
| EP2542835A1 (en) * | 2010-03-03 | 2013-01-09 | Bromic Heating Pty Limited | Wind resistant heater |
| EP2542835A4 (en) * | 2010-03-03 | 2014-12-10 | Bromic Heating Pty Ltd | Wind resistant heater |
| US9874348B2 (en) | 2010-03-03 | 2018-01-23 | Bromic Heating Pty. Limited | Wind resistant heater |
| EP3617596A1 (en) * | 2018-08-28 | 2020-03-04 | Honeywell International Inc. | Method for operating a gas burner appliance |
| US11287131B2 (en) | 2018-08-28 | 2022-03-29 | Ademco Inc. | Method for operating a gas burner appliance |
| US11384935B2 (en) * | 2018-09-25 | 2022-07-12 | Noritz Corporation | Combustion apparatus and hot water apparatus |
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